/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ // vim:cindent:ts=2:et:sw=2: /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Dan Rosen * Mats Palmgren * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #include "nsCSSFrameConstructor.h" #include "nsCRT.h" #include "nsIAtom.h" #include "nsIURL.h" #include "nsISupportsArray.h" #include "nsHashtable.h" #include "nsIStyledContent.h" #include "nsIHTMLDocument.h" #include "nsIStyleRule.h" #include "nsIFrame.h" #include "nsHTMLAtoms.h" #include "nsPresContext.h" #include "nsILinkHandler.h" #include "nsIDocument.h" #include "nsTableFrame.h" #include "nsTableColGroupFrame.h" #include "nsTableColFrame.h" #include "nsIDOMHTMLDocument.h" #include "nsIDOMHTMLTableColElement.h" #include "nsIDOMHTMLTableCaptionElem.h" #include "nsTableCellFrame.h" // to get IS_CELL_FRAME #include "nsHTMLParts.h" #include "nsIPresShell.h" #include "nsStyleSet.h" #include "nsIViewManager.h" #include "nsIScrollableView.h" #include "nsStyleConsts.h" #include "nsTableOuterFrame.h" #include "nsIDOMXULElement.h" #include "nsHTMLContainerFrame.h" #include "nsINameSpaceManager.h" #include "nsLayoutAtoms.h" #include "nsIDOMHTMLSelectElement.h" #include "nsIDOMHTMLLegendElement.h" #include "nsIComboboxControlFrame.h" #include "nsIListControlFrame.h" #include "nsISelectControlFrame.h" #include "nsIRadioControlFrame.h" #include "nsICheckboxControlFrame.h" #include "nsIDOMCharacterData.h" #include "nsIDOMHTMLImageElement.h" #include "nsITextContent.h" #include "nsPlaceholderFrame.h" #include "nsTableRowGroupFrame.h" #include "nsStyleChangeList.h" #include "nsIFormControl.h" #include "nsCSSAnonBoxes.h" #include "nsCSSPseudoElements.h" #include "nsIDeviceContext.h" #include "nsTextFragment.h" #include "nsISupportsArray.h" #include "nsIAnonymousContentCreator.h" #include "nsFrameManager.h" #include "nsLegendFrame.h" #include "nsIContentIterator.h" #include "nsBoxLayoutState.h" #include "nsIBindingManager.h" #include "nsXBLBinding.h" #include "nsITheme.h" #include "nsContentCID.h" #include "nsContentUtils.h" #include "nsIDocShell.h" #include "nsIDocShellTreeItem.h" #include "nsObjectFrame.h" #include "nsRuleNode.h" #include "nsIDOMMutationEvent.h" #include "nsChildIterator.h" #include "nsCSSRendering.h" #include "nsISelectElement.h" #include "nsLayoutErrors.h" #include "nsLayoutUtils.h" #include "nsAutoPtr.h" #include "nsXULAtoms.h" #include "nsBoxFrame.h" #include "nsIBoxLayout.h" #include "nsDOMError.h" static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID); #include "nsIDOMWindowInternal.h" #include "nsIMenuFrame.h" #include "nsBox.h" #ifdef MOZ_XUL #include "nsIRootBox.h" #include "nsIDOMXULCommandDispatcher.h" #include "nsIDOMXULDocument.h" #include "nsIXULDocument.h" #endif #ifdef ACCESSIBILITY #include "nsIAccessibilityService.h" #include "nsIAccessibleEvent.h" #endif #include "nsInlineFrame.h" #include "nsBlockFrame.h" #include "nsIScrollableFrame.h" #include "nsIXBLService.h" #include "nsIStyleRuleSupplier.h" #undef NOISY_FIRST_LETTER #ifdef MOZ_MATHML #include "nsMathMLAtoms.h" #include "nsMathMLParts.h" #endif #ifdef MOZ_XTF #include "nsIXTFElement.h" #include "nsIXTFElementWrapperPrivate.h" #include "nsIXTFVisualWrapperPrivate.h" nsresult NS_NewXTFXULDisplayFrame(nsIPresShell*, nsIFrame**); nsresult NS_NewXTFXMLDisplayFrame(nsIPresShell*, PRBool isBlock, nsIFrame**); #ifdef MOZ_SVG nsresult NS_NewXTFSVGDisplayFrame(nsIPresShell*, nsIContent*, nsIFrame**); #endif #endif nsresult NS_NewHTMLCanvasFrame (nsIPresShell* aPresShell, nsIFrame** aNewFrame); #ifdef MOZ_SVG #include "nsSVGAtoms.h" #include "nsISVGTextContainerFrame.h" #include "nsISVGContainerFrame.h" #include "nsStyleUtil.h" #include "nsSVGUtils.h" nsresult NS_NewSVGOuterSVGFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGInnerSVGFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGPolylineFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGPolygonFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGCircleFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGEllipseFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGLineFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGRectFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGGFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGGenericContainerFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); #ifdef MOZ_SVG_FOREIGNOBJECT nsresult NS_NewSVGForeignObjectFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); #endif nsresult NS_NewSVGPathFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGGlyphFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame* parent, nsIFrame** aNewFrame); nsresult NS_NewSVGTextFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGTSpanFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame* parent, nsIFrame** aNewFrame); nsresult NS_NewSVGDefsFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGUseFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); PRBool NS_SVG_TestFeatures (const nsAString& value); extern nsresult NS_NewSVGLinearGradientFrame(nsIPresShell *aPresShell, nsIContent *aContent, nsIFrame** newFrame); extern nsresult NS_NewSVGRadialGradientFrame(nsIPresShell *aPresShell, nsIContent *aContent, nsIFrame** newFrame); extern nsresult NS_NewSVGStopFrame(nsIPresShell *aPresShell, nsIContent *aContent, nsIFrame *aParentFrame, nsIFrame** newFrame); nsresult NS_NewSVGMarkerFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); extern nsresult NS_NewSVGImageFrame(nsIPresShell *aPresShell, nsIContent *aContent, nsIFrame** newFrame); nsresult NS_NewSVGClipPathFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame); nsresult NS_NewSVGTextPathFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame* parent, nsIFrame** aNewFrame); #endif #include "nsIDocument.h" #include "nsIDOMElement.h" #include "nsIDOMNodeList.h" #include "nsIDOMDocument.h" #include "nsIDOMDocumentXBL.h" #include "nsIScrollable.h" #include "nsINodeInfo.h" #include "prenv.h" #include "nsWidgetsCID.h" #include "nsNodeInfoManager.h" #include "nsContentCreatorFunctions.h" // Global object maintenance nsIXBLService * nsCSSFrameConstructor::gXBLService = nsnull; // Global prefs static PRBool gGotXBLFormPrefs = PR_FALSE; static PRBool gUseXBLForms = PR_FALSE; #ifdef DEBUG // Set the environment variable GECKO_FRAMECTOR_DEBUG_FLAGS to one or // more of the following flags (comma separated) for handy debug // output. static PRBool gNoisyContentUpdates = PR_FALSE; static PRBool gReallyNoisyContentUpdates = PR_FALSE; static PRBool gNoisyInlineConstruction = PR_FALSE; static PRBool gVerifyFastFindFrame = PR_FALSE; static PRBool gTablePseudoFrame = PR_FALSE; struct FrameCtorDebugFlags { const char* name; PRBool* on; }; static FrameCtorDebugFlags gFlags[] = { { "content-updates", &gNoisyContentUpdates }, { "really-noisy-content-updates", &gReallyNoisyContentUpdates }, { "noisy-inline", &gNoisyInlineConstruction }, { "fast-find-frame", &gVerifyFastFindFrame }, { "table-pseudo", &gTablePseudoFrame }, }; #define NUM_DEBUG_FLAGS (sizeof(gFlags) / sizeof(gFlags[0])) #endif #ifdef MOZ_XUL #include "nsMenuFrame.h" #include "nsPopupSetFrame.h" #include "nsTreeColFrame.h" #include "nsIBoxObject.h" #include "nsPIListBoxObject.h" #include "nsListBoxBodyFrame.h" #include "nsListItemFrame.h" //------------------------------------------------------------------ nsresult NS_NewAutoRepeatBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame); nsresult NS_NewRootBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame); nsresult NS_NewDocElementBoxFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame); nsresult NS_NewThumbFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewDeckFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, nsIBoxLayout* aLayoutManager = nsnull); nsresult NS_NewLeafBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewStackFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, nsIBoxLayout* aLayoutManager = nsnull); nsresult NS_NewProgressMeterFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewImageBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewTextBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewGroupBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewButtonBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame); nsresult NS_NewGrippyFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewSplitterFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewMenuPopupFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewPopupSetFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame); nsresult NS_NewMenuFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRUint32 aFlags ); nsresult NS_NewMenuBarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewTreeBodyFrame (nsIPresShell* aPresShell, nsIFrame** aNewFrame); // grid nsresult NS_NewGridLayout2 ( nsIPresShell* aPresShell, nsIBoxLayout** aNewLayout ); nsresult NS_NewGridRowLeafLayout ( nsIPresShell* aPresShell, nsIBoxLayout** aNewLayout ); nsresult NS_NewGridRowLeafFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRBool aIsRoot, nsIBoxLayout* aLayout); nsresult NS_NewGridRowGroupLayout ( nsIPresShell* aPresShell, nsIBoxLayout** aNewLayout ); nsresult NS_NewGridRowGroupFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRBool aIsRoot, nsIBoxLayout* aLayout); nsresult NS_NewListBoxLayout ( nsIPresShell* aPresShell, nsCOMPtr& aNewLayout ); // end grid nsresult NS_NewTitleBarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame); nsresult NS_NewResizerFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame); #endif nsresult NS_NewHTMLScrollFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRBool aIsRoot); nsresult NS_NewXULScrollFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRBool aIsRoot); nsresult NS_NewSliderFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewScrollbarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewScrollbarButtonFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); nsresult NS_NewNativeScrollbarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame ); #ifdef NOISY_FINDFRAME static PRInt32 FFWC_totalCount=0; static PRInt32 FFWC_doLoop=0; static PRInt32 FFWC_doSibling=0; static PRInt32 FFWC_recursions=0; static PRInt32 FFWC_nextInFlows=0; static PRInt32 FFWC_slowSearchForText=0; #endif static nsresult DeletingFrameSubtree(nsPresContext* aPresContext, nsFrameManager* aFrameManager, nsIFrame* aFrame); #ifdef MOZ_SVG // Test to see if this language is supported static PRBool SVG_TestLanguage(const nsSubstring& lstr, const nsSubstring& prefs) { // Compare list to attribute value, which may be a list // According to the SVG 1.1 Spec (at least as I read it), we should take // the first attribute value and check it for any matches in the users // preferences, including any prefix matches. // This algorithm is O(M*N) PRInt32 vbegin = 0; PRInt32 vlen = lstr.Length(); while (vbegin < vlen) { PRInt32 vend = lstr.FindChar(PRUnichar(','), vbegin); if (vend == kNotFound) { vend = vlen; } PRInt32 gbegin = 0; PRInt32 glen = prefs.Length(); while (gbegin < glen) { PRInt32 gend = prefs.FindChar(PRUnichar(','), gbegin); if (gend == kNotFound) { gend = glen; } const nsDefaultStringComparator defaultComparator; const nsStringComparator& comparator = NS_STATIC_CAST(const nsStringComparator&, defaultComparator); if (nsStyleUtil::DashMatchCompare(Substring(lstr, vbegin, vend-vbegin), Substring(prefs, gbegin, gend-gbegin), comparator)) { return PR_TRUE; } gbegin = gend + 1; } vbegin = vend + 1; } return PR_FALSE; } #endif static inline nsIFrame* GetFieldSetAreaFrame(nsIFrame* aFieldsetFrame) { // Depends on the fieldset child frame order - see ConstructFieldSetFrame() below. nsIFrame* firstChild = aFieldsetFrame->GetFirstChild(nsnull); return firstChild && firstChild->GetNextSibling() ? firstChild->GetNextSibling() : firstChild; } //---------------------------------------------------------------------- // // When inline frames get weird and have block frames in them, we // annotate them to help us respond to incremental content changes // more easily. static inline PRBool IsFrameSpecial(nsIFrame* aFrame) { return (aFrame->GetStateBits() & NS_FRAME_IS_SPECIAL) != 0; } static void GetSpecialSibling(nsFrameManager* aFrameManager, nsIFrame* aFrame, nsIFrame** aResult) { // We only store the "special sibling" annotation with the first // frame in the flow. Walk back to find that frame now. aFrame = aFrame->GetFirstInFlow(); void* value = aFrame->GetProperty(nsLayoutAtoms::IBSplitSpecialSibling); *aResult = NS_STATIC_CAST(nsIFrame*, value); } static nsIFrame* GetLastSpecialSibling(nsFrameManager* aFrameManager, nsIFrame* aFrame) { for (nsIFrame *frame = aFrame, *next; ; frame = next) { GetSpecialSibling(aFrameManager, frame, &next); if (!next) return frame; } NS_NOTREACHED("unreachable code"); return nsnull; } // Get the frame's next-in-flow, or, if it doesn't have one, // its special sibling. static nsIFrame* GetNifOrSpecialSibling(nsFrameManager *aFrameManager, nsIFrame *aFrame) { nsIFrame *result = aFrame->GetNextInFlow(); if (result) return result; if (IsFrameSpecial(aFrame)) GetSpecialSibling(aFrameManager, aFrame, &result); return result; } static void SetFrameIsSpecial(nsIFrame* aFrame, nsIFrame* aSpecialSibling) { NS_PRECONDITION(aFrame, "bad args!"); // Mark the frame and all of its siblings as "special". for (nsIFrame* frame = aFrame; frame != nsnull; frame = frame->GetNextInFlow()) { frame->AddStateBits(NS_FRAME_IS_SPECIAL); } if (aSpecialSibling) { // We should be the first-in-flow NS_ASSERTION(!aFrame->GetPrevInFlow(), "assigning special sibling to other than first-in-flow!"); // Store the "special sibling" (if we were given one) with the // first frame in the flow. aFrame->SetProperty(nsLayoutAtoms::IBSplitSpecialSibling, aSpecialSibling); } } static nsIFrame* GetIBContainingBlockFor(nsIFrame* aFrame) { NS_PRECONDITION(IsFrameSpecial(aFrame), "GetIBContainingBlockFor() should only be called on known IB frames"); // Get the first "normal" ancestor of the target frame. nsIFrame* parentFrame; do { parentFrame = aFrame->GetParent(); if (! parentFrame) { NS_ERROR("no unsplit block frame in IB hierarchy"); return aFrame; } // Note that we ignore non-special frames which have a pseudo on their // style context -- they're not the frames we're looking for! In // particular, they may be hiding a real parent that _is_ special. if (!IsFrameSpecial(parentFrame) && !parentFrame->GetStyleContext()->GetPseudoType()) break; aFrame = parentFrame; } while (1); // post-conditions NS_ASSERTION(parentFrame, "no normal ancestor found for special frame in GetIBContainingBlockFor"); NS_ASSERTION(parentFrame != aFrame, "parentFrame is actually the child frame - bogus reslt"); return parentFrame; } //---------------------------------------------------------------------- // XXX this predicate and its cousins need to migrated to a single // place in layout - something in nsStyleDisplay maybe? static PRBool IsInlineFrame(nsIFrame* aFrame) { // XXXwaterson why don't we use |! display->IsBlockLevel()| here? switch (aFrame->GetStyleDisplay()->mDisplay) { case NS_STYLE_DISPLAY_INLINE: case NS_STYLE_DISPLAY_INLINE_BLOCK: case NS_STYLE_DISPLAY_INLINE_TABLE: case NS_STYLE_DISPLAY_INLINE_BOX: case NS_STYLE_DISPLAY_INLINE_GRID: case NS_STYLE_DISPLAY_INLINE_STACK: case NS_STYLE_DISPLAY_DECK: case NS_STYLE_DISPLAY_POPUP: case NS_STYLE_DISPLAY_GROUPBOX: return PR_TRUE; default: break; } return PR_FALSE; } // NeedSpecialFrameReframe uses this until we decide what to do about IsInlineFrame() above static PRBool IsInlineFrame2(nsIFrame* aFrame) { return !aFrame->GetStyleDisplay()->IsBlockLevel(); } //---------------------------------------------------------------------- // Block/inline frame construction logic. We maintain a few invariants here: // // 1. Block frames contain block and inline frames. // // 2. Inline frames only contain inline frames. If an inline parent has a block // child then the block child is migrated upward until it lands in a block // parent (the inline frames containing block is where it will end up). // XXX consolidate these things static PRBool IsBlockFrame(nsIFrame* aFrame) { // XXXwaterson this seems wrong; see IsInlineFrame() immediately // above, which will treat inline-block (e.g.) as an inline. Why // don't we use display->IsBlockLevel() here? const nsStyleDisplay* display = aFrame->GetStyleDisplay(); return NS_STYLE_DISPLAY_INLINE != display->mDisplay; } static nsIFrame* FindFirstBlock(nsIFrame* aKid, nsIFrame** aPrevKid) { nsIFrame* prevKid = nsnull; while (aKid) { if (IsBlockFrame(aKid)) { *aPrevKid = prevKid; return aKid; } prevKid = aKid; aKid = aKid->GetNextSibling(); } *aPrevKid = nsnull; return nsnull; } static nsIFrame* FindLastBlock(nsIFrame* aKid) { nsIFrame* lastBlock = nsnull; while (aKid) { if (IsBlockFrame(aKid)) { lastBlock = aKid; } aKid = aKid->GetNextSibling(); } return lastBlock; } /* * Unlike the special (next) sibling, the special previous sibling * property points only from the anonymous block to the original * inline that preceded it. DO NOT CHANGE THAT -- the * GetParentStyleContextFrame code depends on it! It is useful for * finding the "special parent" of a frame (i.e., a frame from which a * good parent style context can be obtained), one looks at the * special previous sibling annotation of the real parent of the frame * (if the real parent has NS_FRAME_IS_SPECIAL). */ inline void MarkIBSpecialPrevSibling(nsPresContext* aPresContext, nsIFrame *aAnonymousFrame, nsIFrame *aSpecialParent) { aPresContext->PropertyTable()->SetProperty(aAnonymousFrame, nsLayoutAtoms::IBSplitSpecialPrevSibling, aSpecialParent, nsnull, nsnull); } // ----------------------------------------------------------- // Helper function that recursively removes content to frame mappings and // undisplayed content mappings. // This differs from DeletingFrameSubtree() because the frames have not yet been // added to the frame hierarchy static void DoCleanupFrameReferences(nsPresContext* aPresContext, nsFrameManager* aFrameManager, nsIFrame* aFrameIn) { nsIContent* content = aFrameIn->GetContent(); // if the frame is a placeholder use the out of flow frame nsIFrame* frame = nsPlaceholderFrame::GetRealFrameFor(aFrameIn); // Remove the mapping from the content object to its frame aFrameManager->RemoveAsPrimaryFrame(content, frame); aFrameManager->ClearAllUndisplayedContentIn(content); // Recursively walk the child frames. // Note: we only need to look at the principal child list nsIFrame* childFrame = frame->GetFirstChild(nsnull); while (childFrame) { DoCleanupFrameReferences(aPresContext, aFrameManager, childFrame); // Get the next sibling child frame childFrame = childFrame->GetNextSibling(); } } // Helper function that walks a frame list and calls DoCleanupFrameReference() static void CleanupFrameReferences(nsPresContext* aPresContext, nsFrameManager* aFrameManager, nsIFrame* aFrameList) { while (aFrameList) { DoCleanupFrameReferences(aPresContext, aFrameManager, aFrameList); // Get the sibling frame aFrameList = aFrameList->GetNextSibling(); } } // ----------------------------------------------------------- // Structure used when constructing formatting object trees. struct nsFrameItems { nsIFrame* childList; nsIFrame* lastChild; nsFrameItems(nsIFrame* aFrame = nsnull); // Appends the frame to the end of the list void AddChild(nsIFrame* aChild); // Remove the frame from the list, return PR_FALSE if not found. PRBool RemoveChild(nsIFrame* aChild); }; nsFrameItems::nsFrameItems(nsIFrame* aFrame) : childList(aFrame), lastChild(aFrame) { } void nsFrameItems::AddChild(nsIFrame* aChild) { #ifdef DEBUG nsIFrame* oldLastChild = lastChild; #endif if (childList == nsnull) { childList = lastChild = aChild; } else { NS_ASSERTION(aChild != lastChild, "Same frame being added to frame list twice?"); lastChild->SetNextSibling(aChild); lastChild = aChild; } // if aChild has siblings, lastChild needs to be the last one for (nsIFrame* sib = lastChild->GetNextSibling(); sib; sib = sib->GetNextSibling()) { NS_ASSERTION(oldLastChild != sib, "Loop in frame list"); lastChild = sib; } } PRBool nsFrameItems::RemoveChild(nsIFrame* aFrame) { NS_PRECONDITION(aFrame, "null ptr"); nsIFrame* prev = nsnull; nsIFrame* sib = childList; for (; sib && sib != aFrame; sib = sib->GetNextSibling()) { prev = sib; } if (!sib) { return PR_FALSE; } if (sib == childList) { childList = sib->GetNextSibling(); } else { prev->SetNextSibling(sib->GetNextSibling()); } if (sib == lastChild) { lastChild = prev; } sib->SetNextSibling(nsnull); return PR_TRUE; } // ----------------------------------------------------------- // Structure used when constructing formatting object trees. Contains // state information needed for absolutely positioned elements struct nsAbsoluteItems : nsFrameItems { // containing block for absolutely positioned elements nsIFrame* containingBlock; nsAbsoluteItems(nsIFrame* aContainingBlock); #ifdef DEBUG // XXXbz Does this need a debug-only assignment operator that nulls out the // childList in the nsAbsoluteItems we're copying? Introducing a difference // between debug and non-debug behavior seems bad, so I guess not... ~nsAbsoluteItems() { NS_ASSERTION(!childList, "Dangling child list. Someone forgot to insert it?"); } #endif // Appends the frame to the end of the list void AddChild(nsIFrame* aChild); }; nsAbsoluteItems::nsAbsoluteItems(nsIFrame* aContainingBlock) : containingBlock(aContainingBlock) { } // Additional behavior is that it sets the frame's NS_FRAME_OUT_OF_FLOW flag void nsAbsoluteItems::AddChild(nsIFrame* aChild) { aChild->AddStateBits(NS_FRAME_OUT_OF_FLOW); nsFrameItems::AddChild(aChild); } // Structures used to record the creation of pseudo table frames where // the content belongs to some ancestor. // PseudoFrames are necessary when the childframe cannot be the direct // ancestor of the content based parent frame. The amount of necessary pseudo // frames is limited as the worst case would be table frame nested directly // into another table frame. So the member structures of nsPseudoFrames can be // viewed as a ring buffer where you start with the necessary frame type and // add higher frames as long as necessary to fit into the initial parent frame. // mLowestType is some sort of stack pointer which shows the start of the // ringbuffer. The insertion of pseudo frames can happen between every // two frames so we need to push and pop the pseudo frame data when children // of a frame are created. // The colgroup frame is special as it can harbour only col children. // Once all children of given frame are known, the pseudo frames can be // processed that means attached to the corresponding parent frames. // The behaviour is in general described at // http://www.w3.org/TR/CSS21/tables.html#anonymous-boxes // however there are implementation details that extend the CSS 2.1 // specification: // 1. every table frame is wrapped in an outer table frame, which is always a // pseudo frame. // 2. the outer table frame will be also created to hold a caption. // 3. each table cell will have a pseudo inner table cell frame. // 4. a colgroup frame is created between a column and a table // 5. a rowgroup frame is created between a row and a table // A table frame can only have rowgroups or column groups as children. // A outer table frame can only have one caption and one table frame // as children. // Every table even if all table frames are specified will require the // creation of two types of pseudo frames: the outer table frame and the inner // table cell frames. struct nsPseudoFrameData { nsIFrame* mFrame; // created pseudo frame nsFrameItems mChildList; // child frames pending to be added to the pseudo nsFrameItems mChildList2; // child frames pending to be added to the pseudo nsPseudoFrameData(); nsPseudoFrameData(nsPseudoFrameData& aOther); void Reset(); #ifdef DEBUG void Dump(); #endif }; struct nsPseudoFrames { nsPseudoFrameData mTableOuter; nsPseudoFrameData mTableInner; nsPseudoFrameData mRowGroup; nsPseudoFrameData mColGroup; nsPseudoFrameData mRow; nsPseudoFrameData mCellOuter; nsPseudoFrameData mCellInner; // the frame type of the most descendant pseudo frame, no AddRef nsIAtom* mLowestType; nsPseudoFrames(); nsPseudoFrames& operator=(const nsPseudoFrames& aOther); void Reset(nsPseudoFrames* aSave = nsnull); PRBool IsEmpty() { return (!mLowestType && !mColGroup.mFrame); } #ifdef DEBUG void Dump(); #endif }; nsPseudoFrameData::nsPseudoFrameData() : mFrame(nsnull), mChildList(), mChildList2() {} nsPseudoFrameData::nsPseudoFrameData(nsPseudoFrameData& aOther) : mFrame(aOther.mFrame), mChildList(aOther.mChildList), mChildList2(aOther.mChildList2) {} void nsPseudoFrameData::Reset() { mFrame = nsnull; mChildList.childList = mChildList.lastChild = nsnull; mChildList2.childList = mChildList2.lastChild = nsnull; } #ifdef DEBUG void nsPseudoFrameData::Dump() { nsIFrame* main = nsnull; nsIFrame* second = nsnull; printf(" %p\n", NS_STATIC_CAST(void*, mFrame)); main = mChildList.childList; second = mChildList2.childList; while (main || second) { printf(" %p %p\n", NS_STATIC_CAST(void*, main), NS_STATIC_CAST(void*, second)); if (main) main = main->GetNextSibling(); if (second) second = second->GetNextSibling(); } } #endif nsPseudoFrames::nsPseudoFrames() : mTableOuter(), mTableInner(), mRowGroup(), mColGroup(), mRow(), mCellOuter(), mCellInner(), mLowestType(nsnull) {} nsPseudoFrames& nsPseudoFrames::operator=(const nsPseudoFrames& aOther) { mTableOuter = aOther.mTableOuter; mTableInner = aOther.mTableInner; mColGroup = aOther.mColGroup; mRowGroup = aOther.mRowGroup; mRow = aOther.mRow; mCellOuter = aOther.mCellOuter; mCellInner = aOther.mCellInner; mLowestType = aOther.mLowestType; return *this; } void nsPseudoFrames::Reset(nsPseudoFrames* aSave) { if (aSave) { *aSave = *this; } mTableOuter.Reset(); mTableInner.Reset(); mColGroup.Reset(); mRowGroup.Reset(); mRow.Reset(); mCellOuter.Reset(); mCellInner.Reset(); mLowestType = nsnull; } #ifdef DEBUG void nsPseudoFrames::Dump() { if (IsEmpty()) { // check that it is really empty, warn otherwise NS_ASSERTION(!mTableOuter.mFrame, "Pseudo Outer Table Frame not empty"); NS_ASSERTION(!mTableOuter.mChildList.childList, "Pseudo Outer Table Frame has primary children"); NS_ASSERTION(!mTableOuter.mChildList2.childList,"Pseudo Outer Table Frame has secondary children"); NS_ASSERTION(!mTableInner.mFrame, "Pseudo Inner Table Frame not empty"); NS_ASSERTION(!mTableInner.mChildList.childList, "Pseudo Inner Table Frame has primary children"); NS_ASSERTION(!mTableInner.mChildList2.childList,"Pseudo Inner Table Frame has secondary children"); NS_ASSERTION(!mColGroup.mFrame, "Pseudo Colgroup Frame not empty"); NS_ASSERTION(!mColGroup.mChildList.childList, "Pseudo Colgroup Table Frame has primary children"); NS_ASSERTION(!mColGroup.mChildList2.childList, "Pseudo Colgroup Table Frame has secondary children"); NS_ASSERTION(!mRowGroup.mFrame, "Pseudo Rowgroup Frame not empty"); NS_ASSERTION(!mRowGroup.mChildList.childList, "Pseudo Rowgroup Frame has primary children"); NS_ASSERTION(!mRowGroup.mChildList2.childList, "Pseudo Rowgroup Frame has secondary children"); NS_ASSERTION(!mRow.mFrame, "Pseudo Row Frame not empty"); NS_ASSERTION(!mRow.mChildList.childList, "Pseudo Row Frame has primary children"); NS_ASSERTION(!mRow.mChildList2.childList, "Pseudo Row Frame has secondary children"); NS_ASSERTION(!mCellOuter.mFrame, "Pseudo Outer Cell Frame not empty"); NS_ASSERTION(!mCellOuter.mChildList.childList, "Pseudo Outer Cell Frame has primary children"); NS_ASSERTION(!mCellOuter.mChildList2.childList, "Pseudo Outer Cell Frame has secondary children"); NS_ASSERTION(!mCellInner.mFrame, "Pseudo Inner Cell Frame not empty"); NS_ASSERTION(!mCellInner.mChildList.childList, "Pseudo Inner Cell Frame has primary children"); NS_ASSERTION(!mCellInner.mChildList2.childList, "Pseudo inner Cell Frame has secondary children"); } else { if (mTableOuter.mFrame || mTableOuter.mChildList.childList || mTableOuter.mChildList2.childList) { if (nsLayoutAtoms::tableOuterFrame == mLowestType) { printf("LOW OuterTable\n"); } else { printf(" OuterTable\n"); } mTableOuter.Dump(); } if (mTableInner.mFrame || mTableInner.mChildList.childList || mTableInner.mChildList2.childList) { if (nsLayoutAtoms::tableFrame == mLowestType) { printf("LOW InnerTable\n"); } else { printf(" InnerTable\n"); } mTableInner.Dump(); } if (mColGroup.mFrame || mColGroup.mChildList.childList || mColGroup.mChildList2.childList) { if (nsLayoutAtoms::tableColGroupFrame == mLowestType) { printf("LOW ColGroup\n"); } else { printf(" ColGroup\n"); } mColGroup.Dump(); } if (mRowGroup.mFrame || mRowGroup.mChildList.childList || mRowGroup.mChildList2.childList) { if (nsLayoutAtoms::tableRowGroupFrame == mLowestType) { printf("LOW RowGroup\n"); } else { printf(" RowGroup\n"); } mRowGroup.Dump(); } if (mRow.mFrame || mRow.mChildList.childList || mRow.mChildList2.childList) { if (nsLayoutAtoms::tableRowFrame == mLowestType) { printf("LOW Row\n"); } else { printf(" Row\n"); } mRow.Dump(); } if (mCellOuter.mFrame || mCellOuter.mChildList.childList || mCellOuter.mChildList2.childList) { if (IS_TABLE_CELL(mLowestType)) { printf("LOW OuterCell\n"); } else { printf(" OuterCell\n"); } mCellOuter.Dump(); } if (mCellInner.mFrame || mCellInner.mChildList.childList || mCellInner.mChildList2.childList) { printf(" InnerCell\n"); mCellInner.Dump(); } } } #endif // ----------------------------------------------------------- // Structure for saving the existing state when pushing/poping containing // blocks. The destructor restores the state to its previous state class nsFrameConstructorSaveState { public: nsFrameConstructorSaveState(); ~nsFrameConstructorSaveState(); private: nsAbsoluteItems* mItems; // pointer to struct whose data we save/restore PRBool* mFirstLetterStyle; PRBool* mFirstLineStyle; nsAbsoluteItems mSavedItems; // copy of original data PRBool mSavedFirstLetterStyle; PRBool mSavedFirstLineStyle; // The name of the child list in which our frames would belong nsIAtom* mChildListName; nsFrameConstructorState* mState; friend class nsFrameConstructorState; }; // Structure for saving the existing state when pushing/popping insertion // points for nsIAnonymousContentCreator. The destructor restores the state // to its previous state. See documentation of these members in // nsFrameConstructorState. class nsFrameConstructorInsertionState { public: nsFrameConstructorInsertionState(); ~nsFrameConstructorInsertionState(); private: nsIFrame* mAnonymousCreator; nsIContent* mInsertionContent; PRBool mCreatorIsBlock; nsFrameConstructorState* mState; friend class nsFrameConstructorState; }; // Structure used for maintaining state information during the // frame construction process class nsFrameConstructorState { public: nsPresContext *mPresContext; nsIPresShell *mPresShell; nsFrameManager *mFrameManager; // Containing block information for out-of-flow frammes nsAbsoluteItems mFixedItems; nsAbsoluteItems mAbsoluteItems; nsAbsoluteItems mFloatedItems; PRBool mFirstLetterStyle; PRBool mFirstLineStyle; nsCOMPtr mFrameState; nsPseudoFrames mPseudoFrames; // The nsIAnonymousContentCreator we're currently constructing children for. nsIFrame *mAnonymousCreator; // The insertion point node for mAnonymousCreator. nsIContent *mInsertionContent; // Whether the parent is a block (see ProcessChildren's aParentIsBlock) PRBool mCreatorIsBlock; // Constructor // Use the passed-in history state. nsFrameConstructorState(nsIPresShell* aPresShell, nsIFrame* aFixedContainingBlock, nsIFrame* aAbsoluteContainingBlock, nsIFrame* aFloatContainingBlock, nsILayoutHistoryState* aHistoryState); // Get the history state from the pres context's pres shell. nsFrameConstructorState(nsIPresShell* aPresShell, nsIFrame* aFixedContainingBlock, nsIFrame* aAbsoluteContainingBlock, nsIFrame* aFloatContainingBlock); ~nsFrameConstructorState(); // Function to push the existing absolute containing block state and // create a new scope. Code that uses this function should get matching // logic in GetAbsoluteContainingBlock. void PushAbsoluteContainingBlock(nsIFrame* aNewAbsoluteContainingBlock, nsFrameConstructorSaveState& aSaveState); // Function to push the existing float containing block state and // create a new scope. Code that uses this function should get matching // logic in GetFloatContainingBlock. // Pushing a null float containing block forbids any frames from being // floated until a new float containing block is pushed. // XXX we should get rid of null float containing blocks and teach the // various frame classes to deal with floats instead. void PushFloatContainingBlock(nsIFrame* aNewFloatContainingBlock, nsFrameConstructorSaveState& aSaveState, PRBool aFirstLetterStyle, PRBool aFirstLineStyle); // Function to return the proper geometric parent for a frame with display // struct given by aStyleDisplay and parent's frame given by // aContentParentFrame. If the frame is not allowed to be positioned, pass // false for aCanBePositioned. nsIFrame* GetGeometricParent(const nsStyleDisplay* aStyleDisplay, nsIFrame* aContentParentFrame); /** * Function to add a new frame to the right frame list. This MUST be called * on frames before their children have been processed if the frames might * conceivably be out-of-flow; otherwise cleanup in error cases won't work * right. Also, this MUST be called on frames after they have been * initialized. * @param aNewFrame the frame to add * @param aFrameItems the list to add in-flow frames to * @param aStyleDisplay the display struct for aNewFrame * @param aContent the content pointer for aNewFrame * @param aStyleContext the style context of aNewFrame * @param aParentFrame the parent frame for the content if it were in-flow * @param aCanBePositioned pass false if the frame isn't allowed to be * positioned * @param aCanBeFloated pass false if the frame isn't allowed to be * floated * @throws NS_ERROR_OUT_OF_MEMORY if it happens. * @note If this method throws, that means that aNewFrame was not inserted * into any frame lists. Furthermore, this method will handle cleanup * of aNewFrame (via calling CleanupFrameReferences() and Destroy() on * it). */ nsresult AddChild(nsIFrame* aNewFrame, nsFrameItems& aFrameItems, const nsStyleDisplay* aStyleDisplay, nsIContent* aContent, nsStyleContext* aStyleContext, nsIFrame* aParentFrame, PRBool aCanBePositioned = PR_TRUE, PRBool aCanBeFloated = PR_TRUE); // Push an nsIAnonymousContentCreator and its insertion node void PushAnonymousContentCreator(nsIFrame *aCreator, nsIContent *aContent, PRBool aIsBlock, nsFrameConstructorInsertionState &aSaveState); protected: friend class nsFrameConstructorSaveState; friend class nsFrameConstructorInsertionState; /** * ProcessFrameInsertions takes the frames in aFrameItems and adds them as * kids to the aChildListName child list of |aFrameItems.containingBlock|. */ void ProcessFrameInsertions(nsAbsoluteItems& aFrameItems, nsIAtom* aChildListName); }; nsFrameConstructorState::nsFrameConstructorState(nsIPresShell* aPresShell, nsIFrame* aFixedContainingBlock, nsIFrame* aAbsoluteContainingBlock, nsIFrame* aFloatContainingBlock, nsILayoutHistoryState* aHistoryState) : mPresContext(aPresShell->GetPresContext()), mPresShell(aPresShell), mFrameManager(aPresShell->FrameManager()), mFixedItems(aFixedContainingBlock), mAbsoluteItems(aAbsoluteContainingBlock), mFloatedItems(aFloatContainingBlock), mFirstLetterStyle(PR_FALSE), mFirstLineStyle(PR_FALSE), mFrameState(aHistoryState), mPseudoFrames(), mAnonymousCreator(nsnull), mInsertionContent(nsnull), mCreatorIsBlock(PR_FALSE) { } nsFrameConstructorState::nsFrameConstructorState(nsIPresShell* aPresShell, nsIFrame* aFixedContainingBlock, nsIFrame* aAbsoluteContainingBlock, nsIFrame* aFloatContainingBlock) : mPresContext(aPresShell->GetPresContext()), mPresShell(aPresShell), mFrameManager(aPresShell->FrameManager()), mFixedItems(aFixedContainingBlock), mAbsoluteItems(aAbsoluteContainingBlock), mFloatedItems(aFloatContainingBlock), mFirstLetterStyle(PR_FALSE), mFirstLineStyle(PR_FALSE), mPseudoFrames(), mAnonymousCreator(nsnull), mInsertionContent(nsnull), mCreatorIsBlock(PR_FALSE) { mFrameState = aPresShell->GetDocument()->GetLayoutHistoryState(); } nsFrameConstructorState::~nsFrameConstructorState() { ProcessFrameInsertions(mAbsoluteItems, nsLayoutAtoms::absoluteList); ProcessFrameInsertions(mFixedItems, nsLayoutAtoms::fixedList); ProcessFrameInsertions(mFloatedItems, nsLayoutAtoms::floatList); } static nsIFrame* AdjustAbsoluteContainingBlock(nsPresContext* aPresContext, nsIFrame* aContainingBlockIn) { if (!aContainingBlockIn) { return nsnull; } // Always use the container's first in flow. return aContainingBlockIn->GetFirstInFlow(); } void nsFrameConstructorState::PushAbsoluteContainingBlock(nsIFrame* aNewAbsoluteContainingBlock, nsFrameConstructorSaveState& aSaveState) { aSaveState.mItems = &mAbsoluteItems; aSaveState.mSavedItems = mAbsoluteItems; aSaveState.mChildListName = nsLayoutAtoms::absoluteList; aSaveState.mState = this; mAbsoluteItems = nsAbsoluteItems(AdjustAbsoluteContainingBlock(mPresContext, aNewAbsoluteContainingBlock)); } void nsFrameConstructorState::PushFloatContainingBlock(nsIFrame* aNewFloatContainingBlock, nsFrameConstructorSaveState& aSaveState, PRBool aFirstLetterStyle, PRBool aFirstLineStyle) { // XXXbz we should probably just be able to assert that // aNewFloatContainingBlock is a float containing block... see XXX comment at // the top of ProcessChildren. NS_PRECONDITION(!aNewFloatContainingBlock || aNewFloatContainingBlock->GetContentInsertionFrame()-> IsFloatContainingBlock(), "Please push a real float containing block!"); aSaveState.mItems = &mFloatedItems; aSaveState.mFirstLetterStyle = &mFirstLetterStyle; aSaveState.mFirstLineStyle = &mFirstLineStyle; aSaveState.mSavedItems = mFloatedItems; aSaveState.mSavedFirstLetterStyle = mFirstLetterStyle; aSaveState.mSavedFirstLineStyle = mFirstLineStyle; aSaveState.mChildListName = nsLayoutAtoms::floatList; aSaveState.mState = this; mFloatedItems = nsAbsoluteItems(aNewFloatContainingBlock); mFirstLetterStyle = aFirstLetterStyle; mFirstLineStyle = aFirstLineStyle; } nsIFrame* nsFrameConstructorState::GetGeometricParent(const nsStyleDisplay* aStyleDisplay, nsIFrame* aContentParentFrame) { NS_PRECONDITION(aStyleDisplay, "Must have display struct!"); // If there is no container for a fixed, absolute, or floating root // frame, we will ignore the positioning. This hack is originally // brought to you by the letter T: tables, since other roots don't // even call into this code. See bug 178855. // // XXX Disabling positioning in this case is a hack. If one was so inclined, // one could support this either by (1) inserting a dummy block between the // table and the canvas or (2) teaching the canvas how to reflow positioned // elements. (1) has the usual problems when multiple frames share the same // content (notice all the special cases in this file dealing with inner // tables and outer tables which share the same content). (2) requires some // work and possible factoring. // // XXXbz couldn't we just force position to "static" on roots and // float to "none"? That's OK per CSS 2.1, as far as I can tell. if (aStyleDisplay->IsFloating() && mFloatedItems.containingBlock) { NS_ASSERTION(!aStyleDisplay->IsAbsolutelyPositioned(), "Absolutely positioned _and_ floating?"); return mFloatedItems.containingBlock; } if (aStyleDisplay->mPosition == NS_STYLE_POSITION_ABSOLUTE && mAbsoluteItems.containingBlock) { return mAbsoluteItems.containingBlock; } if (aStyleDisplay->mPosition == NS_STYLE_POSITION_FIXED && mFixedItems.containingBlock) { return mFixedItems.containingBlock; } return aContentParentFrame; } nsresult nsFrameConstructorState::AddChild(nsIFrame* aNewFrame, nsFrameItems& aFrameItems, const nsStyleDisplay* aStyleDisplay, nsIContent* aContent, nsStyleContext* aStyleContext, nsIFrame* aParentFrame, PRBool aCanBePositioned, PRBool aCanBeFloated) { // The comments in GetGeometricParent regarding root table frames // all apply here, unfortunately. PRBool needPlaceholder = PR_FALSE; nsFrameItems* frameItems = &aFrameItems; if (aCanBeFloated && aStyleDisplay->IsFloating() && mFloatedItems.containingBlock) { NS_ASSERTION(aNewFrame->GetParent() == mFloatedItems.containingBlock, "Float whose parent is not the float containing block?"); needPlaceholder = PR_TRUE; frameItems = &mFloatedItems; } else if (aCanBePositioned) { if (aStyleDisplay->mPosition == NS_STYLE_POSITION_ABSOLUTE && mAbsoluteItems.containingBlock) { NS_ASSERTION(aNewFrame->GetParent() == mAbsoluteItems.containingBlock, "Abs pos whose parent is not the abs pos containing block?"); needPlaceholder = PR_TRUE; frameItems = &mAbsoluteItems; } if (aStyleDisplay->mPosition == NS_STYLE_POSITION_FIXED && mFixedItems.containingBlock) { NS_ASSERTION(aNewFrame->GetParent() == mFixedItems.containingBlock, "Fixed pos whose parent is not the fixed pos containing block?"); needPlaceholder = PR_TRUE; frameItems = &mFixedItems; } } if (needPlaceholder) { NS_ASSERTION(frameItems != &aFrameItems, "Putting frame in-flow _and_ want a placeholder?"); nsIFrame* placeholderFrame; nsresult rv = nsCSSFrameConstructor::CreatePlaceholderFrameFor(mPresShell, mPresContext, mFrameManager, aContent, aNewFrame, aStyleContext, aParentFrame, &placeholderFrame); if (NS_FAILED(rv)) { // Note that aNewFrame could be the top frame for a scrollframe setup, // hence already set as the primary frame. So we have to clean up here. // But it shouldn't have any out-of-flow kids. // XXXbz Maybe add a utility function to assert that? CleanupFrameReferences(mPresContext, mFrameManager, aNewFrame); aNewFrame->Destroy(mPresContext); return rv; } // Add the placeholder frame to the flow aFrameItems.AddChild(placeholderFrame); } #ifdef DEBUG else { NS_ASSERTION(aNewFrame->GetParent() == aParentFrame, "In-flow frame has wrong parent"); } #endif frameItems->AddChild(aNewFrame); // Now add the special siblings too. nsIFrame* specialSibling = aNewFrame; while (specialSibling && IsFrameSpecial(specialSibling)) { GetSpecialSibling(mFrameManager, specialSibling, &specialSibling); if (specialSibling) { NS_ASSERTION(frameItems == &aFrameItems, "IB split ending up in an out-of-flow childlist?"); frameItems->AddChild(specialSibling); } } return NS_OK; } void nsFrameConstructorState::PushAnonymousContentCreator(nsIFrame *aCreator, nsIContent *aContent, PRBool aIsBlock, nsFrameConstructorInsertionState &aSaveState) { NS_ASSERTION(aCreator || !aContent, "Must have a frame if there is an insertion node"); aSaveState.mAnonymousCreator = mAnonymousCreator; aSaveState.mInsertionContent = mInsertionContent; aSaveState.mCreatorIsBlock = mCreatorIsBlock; aSaveState.mState = this; mAnonymousCreator = aCreator; mInsertionContent = aContent; mCreatorIsBlock = aIsBlock; } void nsFrameConstructorState::ProcessFrameInsertions(nsAbsoluteItems& aFrameItems, nsIAtom* aChildListName) { NS_PRECONDITION((&aFrameItems == &mFloatedItems && aChildListName == nsLayoutAtoms::floatList) || (&aFrameItems == &mAbsoluteItems && aChildListName == nsLayoutAtoms::absoluteList) || (&aFrameItems == &mFixedItems && aChildListName == nsLayoutAtoms::fixedList), "Unexpected aFrameItems/aChildListName combination"); nsIFrame* firstNewFrame = aFrameItems.childList; if (!firstNewFrame) { return; } nsIFrame* containingBlock = aFrameItems.containingBlock; NS_ASSERTION(containingBlock, "Child list without containing block?"); // Insert the frames hanging out in aItems. We can use SetInitialChildList() // if the containing block hasn't been reflown yet (so NS_FRAME_FIRST_REFLOW // is set) and doesn't have any frames in the aChildListName child list yet. nsIFrame* firstChild = containingBlock->GetFirstChild(aChildListName); nsresult rv = NS_OK; if (!firstChild && (containingBlock->GetStateBits() & NS_FRAME_FIRST_REFLOW)) { rv = containingBlock->SetInitialChildList(mPresContext, aChildListName, firstNewFrame); } else { // Note that whether the frame construction context is doing an append or // not is not helpful here, since it could be appending to some frame in // the middle of the document, which means we're not necessarily // appending to the children of the containing block. // // We need to make sure the 'append to the end of document' case is fast. // So first test the last child of the containing block nsIFrame* lastChild = nsLayoutUtils::GetLastSibling(firstChild); if (!lastChild || nsLayoutUtils::CompareTreePosition(lastChild->GetContent(), firstNewFrame->GetContent(), containingBlock->GetContent()) < 0) { // no lastChild, or lastChild comes before the new children, so just append rv = containingBlock->AppendFrames(aChildListName, firstNewFrame); } else { nsIFrame* insertionPoint = nsnull; // try the other children for (nsIFrame* f = firstChild; f != lastChild; f = f->GetNextSibling()) { if (nsLayoutUtils::CompareTreePosition(f->GetContent(), firstNewFrame->GetContent(), containingBlock->GetContent()) > 0) { // f comes after the new children, so stop here and insert after // the previous frame break; } insertionPoint = f; } rv = containingBlock->InsertFrames(aChildListName, insertionPoint, firstNewFrame); } } aFrameItems.childList = nsnull; // XXXbz And if NS_FAILED(rv), what? I guess we need to clean up the list // and deal with all the placeholders... but what if the placeholders aren't // in the document yet? Could that happen? NS_ASSERTION(NS_SUCCEEDED(rv), "Frames getting lost!"); } nsFrameConstructorSaveState::nsFrameConstructorSaveState() : mItems(nsnull), mFirstLetterStyle(nsnull), mFirstLineStyle(nsnull), mSavedItems(nsnull), mSavedFirstLetterStyle(PR_FALSE), mSavedFirstLineStyle(PR_FALSE), mChildListName(nsnull), mState(nsnull) { } nsFrameConstructorSaveState::~nsFrameConstructorSaveState() { // Restore the state if (mItems) { NS_ASSERTION(mState, "Can't have mItems set without having a state!"); mState->ProcessFrameInsertions(*mItems, mChildListName); *mItems = mSavedItems; #ifdef DEBUG // We've transferred the child list, so drop the pointer we held to it. // Note that this only matters for the assert in ~nsAbsoluteItems. mSavedItems.childList = nsnull; #endif } if (mFirstLetterStyle) { *mFirstLetterStyle = mSavedFirstLetterStyle; } if (mFirstLineStyle) { *mFirstLineStyle = mSavedFirstLineStyle; } } nsFrameConstructorInsertionState::nsFrameConstructorInsertionState() : mAnonymousCreator(nsnull), mInsertionContent(nsnull), mCreatorIsBlock(PR_FALSE), mState(nsnull) { } nsFrameConstructorInsertionState::~nsFrameConstructorInsertionState() { // Restore the state if (mState) { mState->mAnonymousCreator = mAnonymousCreator; mState->mInsertionContent = mInsertionContent; mState->mCreatorIsBlock = mCreatorIsBlock; } } // Putting this up here to help inlining work on compilers that won't inline // definitions that are after the call site. inline nsresult nsCSSFrameConstructor::CreateInsertionPointChildren(nsFrameConstructorState &aState, nsIFrame *aNewFrame, nsIContent *aContent, PRBool aUseInsertionFrame) { if (aState.mInsertionContent == aContent) return CreateInsertionPointChildren(aState, aNewFrame, aUseInsertionFrame); return NS_OK; } static PRBool IsBorderCollapse(nsIFrame* aFrame) { for (nsIFrame* frame = aFrame; frame; frame = frame->GetParent()) { if (nsLayoutAtoms::tableFrame == frame->GetType()) { return ((nsTableFrame*)frame)->IsBorderCollapse(); } } NS_ASSERTION(PR_FALSE, "program error"); return PR_FALSE; } /** * Utility method, called from MoveChildrenTo(), that recursively * descends down the frame hierarchy looking for floating frames that * need parent pointer adjustments to account for the containment block * changes that could occur as the result of the reparenting done in * MoveChildrenTo(). */ static void AdjustFloatParentPtrs(nsIFrame* aFrame, nsFrameConstructorState& aState, nsFrameConstructorState& aOuterState) { NS_PRECONDITION(aFrame, "must have frame to work with"); nsIFrame *outOfFlowFrame = nsPlaceholderFrame::GetRealFrameFor(aFrame); if (outOfFlowFrame != aFrame) { if (outOfFlowFrame->GetStyleDisplay()->IsFloating()) { // Update the parent pointer for outOfFlowFrame since its // containing block has changed as the result of reparenting // and move it from the outer state to the inner, bug 307277. nsIFrame *parent = aState.mFloatedItems.containingBlock; NS_ASSERTION(parent, "Should have float containing block here!"); NS_ASSERTION(outOfFlowFrame->GetParent() == aOuterState.mFloatedItems.containingBlock, "expected the float to be a child of the outer CB"); if (aOuterState.mFloatedItems.RemoveChild(outOfFlowFrame)) { aState.mFloatedItems.AddChild(outOfFlowFrame); } else { NS_NOTREACHED("float wasn't in the outer state float list"); } outOfFlowFrame->SetParent(parent); if (outOfFlowFrame->GetStateBits() & (NS_FRAME_HAS_VIEW | NS_FRAME_HAS_CHILD_WITH_VIEW)) { // We don't need to walk up the tree, since each level of // recursion of the SplitToContainingBlock will propagate the bit. parent->AddStateBits(NS_FRAME_HAS_CHILD_WITH_VIEW); } } // All out-of-flows are automatically float containing blocks, so we're // done here. return; } if (aFrame->IsFloatContainingBlock()) { // No need to recurse further; floats whose placeholders are // inside a block already have the right parent. return; } // Dive down into children to see if any of their // placeholders need adjusting. nsIFrame *childFrame = aFrame->GetFirstChild(nsnull); while (childFrame) { // XXX_kin: Do we need to prevent descent into anonymous content here? AdjustFloatParentPtrs(childFrame, aState, aOuterState); childFrame = childFrame->GetNextSibling(); } } /** * Moves frames to a new parent, updating the style context and * propagating relevant frame state bits. |aNewParentSC| may be null, * in which case the child frames' style contexts will remain * untouched. |aState| may be null, in which case the parent * pointers of out-of-flow frames will remain untouched. */ static void MoveChildrenTo(nsFrameManager* aFrameManager, nsStyleContext* aNewParentSC, nsIFrame* aNewParent, nsIFrame* aFrameList, nsFrameConstructorState* aState, nsFrameConstructorState* aOuterState) { PRBool setHasChildWithView = PR_FALSE; while (aFrameList) { if (!setHasChildWithView && (aFrameList->GetStateBits() & (NS_FRAME_HAS_VIEW | NS_FRAME_HAS_CHILD_WITH_VIEW))) { setHasChildWithView = PR_TRUE; } aFrameList->SetParent(aNewParent); // If aState is not null, the caller expects us to make adjustments so that // floats whose placeholders are descendants of frames in aFrameList point // to the correct parent. if (aState) { NS_ASSERTION(aOuterState, "need an outer state too"); AdjustFloatParentPtrs(aFrameList, *aState, *aOuterState); } #if 0 // XXX When this is used with {ib} frame hierarchies, it seems // fine to leave the style contexts of the children of the // anonymous block frame parented by the original inline // frame. (In fact, one would expect some inheritance // relationships to be broken if we reparented them to the // anonymous block frame, but oddly they aren't -- need to // investigate that...) if (aNewParentSC) aPresContext->FrameManager()->ReParentStyleContext(aFrameList); #endif aFrameList = aFrameList->GetNextSibling(); } if (setHasChildWithView) { aNewParent->AddStateBits(NS_FRAME_HAS_CHILD_WITH_VIEW); } } // ----------------------------------------------------------- // Structure used when creating table frames. struct nsTableCreator { virtual nsresult CreateTableOuterFrame(nsIFrame** aNewFrame); virtual nsresult CreateTableFrame(nsIFrame** aNewFrame); virtual nsresult CreateTableCaptionFrame(nsIFrame** aNewFrame); virtual nsresult CreateTableRowGroupFrame(nsIFrame** aNewFrame); virtual nsresult CreateTableColFrame(nsIFrame** aNewFrame); virtual nsresult CreateTableColGroupFrame(nsIFrame** aNewFrame); virtual nsresult CreateTableRowFrame(nsIFrame** aNewFrame); virtual nsresult CreateTableCellFrame(nsIFrame* aParentFrame, nsIFrame** aNewFrame); virtual nsresult CreateTableCellInnerFrame(nsIFrame** aNewFrame); nsTableCreator(nsIPresShell* aPresShell) { mPresShell = aPresShell; } virtual ~nsTableCreator() {}; nsIPresShell* mPresShell; }; nsresult nsTableCreator::CreateTableOuterFrame(nsIFrame** aNewFrame) { return NS_NewTableOuterFrame(mPresShell, aNewFrame); } nsresult nsTableCreator::CreateTableFrame(nsIFrame** aNewFrame) { return NS_NewTableFrame(mPresShell, aNewFrame); } nsresult nsTableCreator::CreateTableCaptionFrame(nsIFrame** aNewFrame) { return NS_NewTableCaptionFrame(mPresShell, aNewFrame); } nsresult nsTableCreator::CreateTableRowGroupFrame(nsIFrame** aNewFrame) { return NS_NewTableRowGroupFrame(mPresShell, aNewFrame); } nsresult nsTableCreator::CreateTableColFrame(nsIFrame** aNewFrame) { return NS_NewTableColFrame(mPresShell, aNewFrame); } nsresult nsTableCreator::CreateTableColGroupFrame(nsIFrame** aNewFrame) { return NS_NewTableColGroupFrame(mPresShell, aNewFrame); } nsresult nsTableCreator::CreateTableRowFrame(nsIFrame** aNewFrame) { return NS_NewTableRowFrame(mPresShell, aNewFrame); } nsresult nsTableCreator::CreateTableCellFrame(nsIFrame* aParentFrame, nsIFrame** aNewFrame) { return NS_NewTableCellFrame(mPresShell, IsBorderCollapse(aParentFrame), aNewFrame); } nsresult nsTableCreator::CreateTableCellInnerFrame(nsIFrame** aNewFrame) { return NS_NewTableCellInnerFrame(mPresShell, aNewFrame); } //MathML Mod - RBS #ifdef MOZ_MATHML // Structure used when creating MathML mtable frames struct nsMathMLmtableCreator: public nsTableCreator { virtual nsresult CreateTableOuterFrame(nsIFrame** aNewFrame); virtual nsresult CreateTableFrame(nsIFrame** aNewFrame); virtual nsresult CreateTableRowFrame(nsIFrame** aNewFrame); virtual nsresult CreateTableCellFrame(nsIFrame* aParentFrame, nsIFrame** aNewFrame); virtual nsresult CreateTableCellInnerFrame(nsIFrame** aNewFrame); nsMathMLmtableCreator(nsIPresShell* aPresShell) :nsTableCreator(aPresShell) {}; }; nsresult nsMathMLmtableCreator::CreateTableOuterFrame(nsIFrame** aNewFrame) { return NS_NewMathMLmtableOuterFrame(mPresShell, aNewFrame); } nsresult nsMathMLmtableCreator::CreateTableFrame(nsIFrame** aNewFrame) { return NS_NewMathMLmtableFrame(mPresShell, aNewFrame); } nsresult nsMathMLmtableCreator::CreateTableRowFrame(nsIFrame** aNewFrame) { return NS_NewMathMLmtrFrame(mPresShell, aNewFrame); } nsresult nsMathMLmtableCreator::CreateTableCellFrame(nsIFrame* aParentFrame, nsIFrame** aNewFrame) { if (IsBorderCollapse(aParentFrame)) return NS_NewTableCellFrame(mPresShell, PR_TRUE, aNewFrame); return NS_NewMathMLmtdFrame(mPresShell, aNewFrame); } nsresult nsMathMLmtableCreator::CreateTableCellInnerFrame(nsIFrame** aNewFrame) { // only works if aNewFrame can take care of the lineLayout logic return NS_NewMathMLmtdInnerFrame(mPresShell, aNewFrame); } #endif // MOZ_MATHML // Structure used to ensure that bindings are properly enqueued in the // binding manager's attached queue. struct nsAutoEnqueueBinding { nsAutoEnqueueBinding(nsIDocument* aDocument) : mDocument(aDocument) {} ~nsAutoEnqueueBinding(); nsRefPtr mBinding; private: nsIDocument* mDocument; }; nsAutoEnqueueBinding::~nsAutoEnqueueBinding() { if (mBinding) { mDocument->BindingManager()->AddToAttachedQueue(mBinding); } } /** * If the parent frame is a |tableFrame| and the child is a * |captionFrame|, then we want to insert the frames beneath the * |tableFrame|'s parent frame. Returns |PR_TRUE| if the parent frame * needed to be fixed up. */ static PRBool GetCaptionAdjustedParent(nsIFrame* aParentFrame, const nsIFrame* aChildFrame, nsIFrame** aAdjParentFrame) { *aAdjParentFrame = aParentFrame; PRBool haveCaption = PR_FALSE; if (nsLayoutAtoms::tableCaptionFrame == aChildFrame->GetType()) { haveCaption = PR_TRUE; if (nsLayoutAtoms::tableFrame == aParentFrame->GetType()) { *aAdjParentFrame = aParentFrame->GetParent(); } } return haveCaption; } // Helper function that determines the child list name that aChildFrame // is contained in static void GetChildListNameFor(nsIFrame* aParentFrame, nsIFrame* aChildFrame, nsIAtom** aListName) { nsIAtom* listName; // See if the frame is moved out of the flow if (aChildFrame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) { // Look at the style information to tell const nsStyleDisplay* disp = aChildFrame->GetStyleDisplay(); if (NS_STYLE_POSITION_ABSOLUTE == disp->mPosition) { listName = nsLayoutAtoms::absoluteList; } else if (NS_STYLE_POSITION_FIXED == disp->mPosition) { listName = nsLayoutAtoms::fixedList; } else { NS_ASSERTION(aChildFrame->GetStyleDisplay()->IsFloating(), "not a floated frame"); listName = nsLayoutAtoms::floatList; } } else { listName = nsnull; } // Verify that the frame is actually in that child list NS_ASSERTION(nsFrameList(aParentFrame->GetFirstChild(listName)) .ContainsFrame(aChildFrame), "not in child list"); NS_IF_ADDREF(listName); *aListName = listName; } //---------------------------------------------------------------------- nsCSSFrameConstructor::nsCSSFrameConstructor(nsIDocument *aDocument, nsIPresShell *aPresShell) : mDocument(aDocument) , mPresShell(aPresShell) , mInitialContainingBlock(nsnull) , mFixedContainingBlock(nsnull) , mDocElementContainingBlock(nsnull) , mGfxScrollFrame(nsnull) , mPageSequenceFrame(nsnull) , mUpdateCount(0) , mQuotesDirty(PR_FALSE) , mCountersDirty(PR_FALSE) , mInitialContainingBlockIsAbsPosContainer(PR_FALSE) , mIsDestroyingFrameTree(PR_FALSE) { if (!gGotXBLFormPrefs) { gGotXBLFormPrefs = PR_TRUE; gUseXBLForms = nsContentUtils::GetBoolPref("nglayout.debug.enable_xbl_forms"); } // XXXbz this should be in Init() or something! if (!mPendingRestyles.Init()) { // now what? } // XXXbz this should be in Init() or something! mEventQueueService = do_GetService(kEventQueueServiceCID); #ifdef DEBUG static PRBool gFirstTime = PR_TRUE; if (gFirstTime) { gFirstTime = PR_FALSE; char* flags = PR_GetEnv("GECKO_FRAMECTOR_DEBUG_FLAGS"); if (flags) { PRBool error = PR_FALSE; for (;;) { char* comma = PL_strchr(flags, ','); if (comma) *comma = '\0'; PRBool found = PR_FALSE; FrameCtorDebugFlags* flag = gFlags; FrameCtorDebugFlags* limit = gFlags + NUM_DEBUG_FLAGS; while (flag < limit) { if (PL_strcasecmp(flag->name, flags) == 0) { *(flag->on) = PR_TRUE; printf("nsCSSFrameConstructor: setting %s debug flag on\n", flag->name); found = PR_TRUE; break; } ++flag; } if (! found) error = PR_TRUE; if (! comma) break; *comma = ','; flags = comma + 1; } if (error) { printf("Here are the available GECKO_FRAMECTOR_DEBUG_FLAGS:\n"); FrameCtorDebugFlags* flag = gFlags; FrameCtorDebugFlags* limit = gFlags + NUM_DEBUG_FLAGS; while (flag < limit) { printf(" %s\n", flag->name); ++flag; } printf("Note: GECKO_FRAMECTOR_DEBUG_FLAGS is a comma separated list of flag\n"); printf("names (no whitespace)\n"); } } } #endif } nsIXBLService * nsCSSFrameConstructor::GetXBLService() { if (!gXBLService) { nsresult rv = CallGetService("@mozilla.org/xbl;1", &gXBLService); if (NS_FAILED(rv)) gXBLService = nsnull; } return gXBLService; } void nsCSSFrameConstructor::NotifyDestroyingFrame(nsIFrame* aFrame) { if (aFrame->GetStateBits() & NS_FRAME_GENERATED_CONTENT) { if (mQuoteList.DestroyNodesFor(aFrame)) QuotesDirty(); } if (mCounterManager.DestroyNodesFor(aFrame)) { // Technically we don't need to update anything if we destroyed only // USE nodes. However, this is unlikely to happen in the real world // since USE nodes generally go along with INCREMENT nodes. CountersDirty(); } } nsresult nsCSSFrameConstructor::CreateGeneratedFrameFor(nsIFrame* aParentFrame, nsIContent* aContent, nsStyleContext* aStyleContext, const nsStyleContent* aStyleContent, PRUint32 aContentIndex, nsIFrame** aFrame) { *aFrame = nsnull; // initialize OUT parameter // The QuoteList needs the content attached to the frame. nsCOMPtr* textPtr = nsnull; // Get the content value const nsStyleContentData &data = aStyleContent->ContentAt(aContentIndex); nsStyleContentType type = data.mType; nsCOMPtr content; nsPresContext* presContext = mPresShell->GetPresContext(); if (eStyleContentType_Image == type) { if (!data.mContent.mImage) { // CSS had something specified that couldn't be converted to an // image object *aFrame = nsnull; return NS_ERROR_FAILURE; } // Create an image content object and pass it the image request. // XXX Check if it's an image type we can handle... nsCOMPtr nodeInfo; mDocument->NodeInfoManager()->GetNodeInfo(nsHTMLAtoms::img, nsnull, kNameSpaceID_None, getter_AddRefs(nodeInfo)); nsresult rv = NS_NewGenConImageContent(getter_AddRefs(content), nodeInfo, data.mContent.mImage); NS_ENSURE_SUCCESS(rv, rv); // Set aContent as the parent content and set the document object. This // way event handling works // Hack the binding parent to make document rules not match (not // like it matters, since we already have a non-element style // context... which is totally wacky, but anyway). rv = content->BindToTree(mDocument, aContent, content, PR_TRUE); if (NS_FAILED(rv)) { content->UnbindFromTree(); return rv; } content->SetNativeAnonymous(PR_TRUE); // Create an image frame and initialize it nsIFrame* imageFrame = nsnull; rv = NS_NewImageFrame(mPresShell, &imageFrame); if (!imageFrame) { return rv; } rv = imageFrame->Init(presContext, content, aParentFrame, aStyleContext, nsnull); if (NS_FAILED(rv)) { imageFrame->Destroy(presContext); return rv == NS_ERROR_FRAME_REPLACED ? NS_OK : rv; } // Return the image frame *aFrame = imageFrame; } else { nsAutoString contentString; switch (type) { case eStyleContentType_String: contentString = data.mContent.mString; break; case eStyleContentType_Attr: { nsCOMPtr attrName; PRInt32 attrNameSpace = kNameSpaceID_None; contentString = data.mContent.mString; PRInt32 barIndex = contentString.FindChar('|'); // CSS namespace delimiter if (-1 != barIndex) { nsAutoString nameSpaceVal; contentString.Left(nameSpaceVal, barIndex); PRInt32 error; attrNameSpace = nameSpaceVal.ToInteger(&error, 10); contentString.Cut(0, barIndex + 1); if (contentString.Length()) { attrName = do_GetAtom(contentString); } } else { attrName = do_GetAtom(contentString); } if (!attrName) { return NS_ERROR_OUT_OF_MEMORY; } // Creates the content and frame and return if successful nsresult rv = NS_ERROR_FAILURE; if (attrName) { nsIFrame* textFrame = nsnull; rv = NS_NewAttributeContent(mDocument->NodeInfoManager(), attrNameSpace, attrName, getter_AddRefs(content)); NS_ENSURE_SUCCESS(rv, rv); // Set aContent as the parent content so that event handling works. rv = content->BindToTree(mDocument, aContent, content, PR_TRUE); if (NS_FAILED(rv)) { content->UnbindFromTree(); return rv; } content->SetNativeAnonymous(PR_TRUE); // Create a text frame and initialize it NS_NewTextFrame(mPresShell, &textFrame); textFrame->Init(presContext, content, aParentFrame, aStyleContext, nsnull); // Return the text frame *aFrame = textFrame; rv = NS_OK; } } break; case eStyleContentType_Counter: case eStyleContentType_Counters: { nsCSSValue::Array *counters = data.mContent.mCounters; nsCounterList *counterList = mCounterManager.CounterListFor( nsDependentString(counters->Item(0).GetStringBufferValue())); if (!counterList) return NS_ERROR_OUT_OF_MEMORY; nsCounterUseNode* node = new nsCounterUseNode(counters, aParentFrame, aContentIndex, type == eStyleContentType_Counters); if (!node) return NS_ERROR_OUT_OF_MEMORY; counterList->Insert(node); PRBool dirty = counterList->IsDirty(); if (!dirty) { if (counterList->IsLast(node)) { node->Calc(counterList); node->GetText(contentString); } // In all other cases (list already dirty or node not at the end), // just start with an empty string for now and when we recalculate // the list we'll change the value to the right one. else { counterList->SetDirty(); CountersDirty(); } } textPtr = &node->mText; // text node assigned below } break; case eStyleContentType_Image: NS_NOTREACHED("handled by if above"); return NS_ERROR_UNEXPECTED; case eStyleContentType_OpenQuote: case eStyleContentType_CloseQuote: case eStyleContentType_NoOpenQuote: case eStyleContentType_NoCloseQuote: { nsQuoteNode* node = new nsQuoteNode(type, aParentFrame, aContentIndex); if (!node) return NS_ERROR_OUT_OF_MEMORY; mQuoteList.Insert(node); if (mQuoteList.IsLast(node)) mQuoteList.Calc(node); else QuotesDirty(); // Don't generate a text node or any text for 'no-open-quote' and // 'no-close-quote'. if (node->IsHiddenQuote()) return NS_OK; textPtr = &node->mText; // text node assigned below contentString = *node->Text(); } break; } // switch if (!content) { // Create a text content node nsIFrame* textFrame = nsnull; nsCOMPtr textContent; NS_NewTextNode(getter_AddRefs(textContent), mDocument->NodeInfoManager()); if (textContent) { // Set the text textContent->SetText(contentString, PR_TRUE); if (textPtr) { *textPtr = do_QueryInterface(textContent); NS_ASSERTION(*textPtr, "must implement nsIDOMCharacterData"); } // Set aContent as the parent content so that event handling works. nsresult rv = textContent->BindToTree(mDocument, aContent, textContent, PR_TRUE); if (NS_FAILED(rv)) { textContent->UnbindFromTree(); return rv; } textContent->SetNativeAnonymous(PR_TRUE); // Create a text frame and initialize it NS_NewTextFrame(mPresShell, &textFrame); if (!textFrame) { // XXX The quotes/counters code doesn't like the text pointer // being null in case of dynamic changes! NS_NOTREACHED("this OOM case isn't handled very well"); return NS_ERROR_OUT_OF_MEMORY; } textFrame->Init(presContext, textContent, aParentFrame, aStyleContext, nsnull); content = textContent; } else { // XXX The quotes/counters code doesn't like the text pointer // being null in case of dynamic changes! NS_NOTREACHED("this OOM case isn't handled very well"); } // Return the text frame *aFrame = textFrame; } } if (content) { nsCOMPtr anonymousItems; nsresult rv = NS_NewISupportsArray(getter_AddRefs(anonymousItems)); NS_ENSURE_SUCCESS(rv, rv); anonymousItems->AppendElement(content); mPresShell->SetAnonymousContentFor(aContent, anonymousItems); } return NS_OK; } /* * * aFrame - the frame that should be the parent of the generated * content. This is the frame for the corresponding content node, * which must not be a leaf frame. */ PRBool nsCSSFrameConstructor::CreateGeneratedContentFrame(nsFrameConstructorState& aState, nsIFrame* aFrame, nsIContent* aContent, nsStyleContext* aStyleContext, nsIAtom* aPseudoElement, nsIFrame** aResult) { *aResult = nsnull; // initialize OUT parameter if (!aContent->IsContentOfType(nsIContent::eELEMENT)) return PR_FALSE; nsStyleSet *styleSet = mPresShell->StyleSet(); // Probe for the existence of the pseudo-element nsRefPtr pseudoStyleContext; pseudoStyleContext = styleSet->ProbePseudoStyleFor(aContent, aPseudoElement, aStyleContext); if (pseudoStyleContext) { // |ProbePseudoStyleContext| checks the 'display' property and the // |ContentCount()| of the 'content' property for us. // Create a block box or an inline box depending on the value of // the 'display' property nsIFrame* containerFrame; nsFrameItems childFrames; if (NS_STYLE_DISPLAY_BLOCK == pseudoStyleContext->GetStyleDisplay()->mDisplay) { NS_NewBlockFrame(mPresShell, &containerFrame); } else { NS_NewInlineFrame(mPresShell, &containerFrame); } InitAndRestoreFrame(aState, aContent, aFrame, pseudoStyleContext, nsnull, containerFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(containerFrame, nsnull, PR_FALSE); // Mark the frame as being associated with generated content containerFrame->AddStateBits(NS_FRAME_GENERATED_CONTENT); // Create another pseudo style context to use for all the generated child // frames nsRefPtr textStyleContext; textStyleContext = styleSet->ResolveStyleForNonElement(pseudoStyleContext); // Now create content objects (and child frames) for each value of the // 'content' property const nsStyleContent* styleContent = pseudoStyleContext->GetStyleContent(); PRUint32 contentCount = styleContent->ContentCount(); for (PRUint32 contentIndex = 0; contentIndex < contentCount; contentIndex++) { nsIFrame* frame; // Create a frame nsresult result; result = CreateGeneratedFrameFor(containerFrame, aContent, textStyleContext, styleContent, contentIndex, &frame); // Non-elements can't possibly have a view, so don't bother checking if (NS_SUCCEEDED(result) && frame) { // Add it to the list of child frames childFrames.AddChild(frame); } } if (childFrames.childList) { containerFrame->SetInitialChildList(aState.mPresContext, nsnull, childFrames.childList); } *aResult = containerFrame; return PR_TRUE; } return PR_FALSE; } nsresult nsCSSFrameConstructor::CreateInputFrame(nsIContent *aContent, nsIFrame **aFrame, nsStyleContext *aStyleContext) { nsCOMPtr control = do_QueryInterface(aContent); NS_ASSERTION(control, "input is not an nsIFormControl!"); switch (control->GetType()) { case NS_FORM_INPUT_SUBMIT: case NS_FORM_INPUT_RESET: case NS_FORM_INPUT_BUTTON: if (gUseXBLForms) return NS_OK; // upddate IsSpecialContent if this becomes functional return NS_NewGfxButtonControlFrame(mPresShell, aFrame); case NS_FORM_INPUT_CHECKBOX: if (gUseXBLForms) return NS_OK; // see comment above return ConstructCheckboxControlFrame(aFrame, aContent, aStyleContext); case NS_FORM_INPUT_RADIO: if (gUseXBLForms) return NS_OK; // see comment above return ConstructRadioControlFrame(aFrame, aContent, aStyleContext); case NS_FORM_INPUT_FILE: { nsresult rv = NS_NewFileControlFrame(mPresShell, aFrame); if (NS_SUCCEEDED(rv)) { // The (block-like) file control frame should have a space manager (*aFrame)->AddStateBits(NS_BLOCK_SPACE_MGR); } return rv; } case NS_FORM_INPUT_HIDDEN: return NS_OK; // this does not create a frame so it needs special handling // in IsSpecialContent case NS_FORM_INPUT_IMAGE: return NS_NewImageControlFrame(mPresShell, aFrame); case NS_FORM_INPUT_TEXT: case NS_FORM_INPUT_PASSWORD: return NS_NewTextControlFrame(mPresShell, aFrame); default: NS_ASSERTION(0, "Unknown input type!"); return NS_ERROR_INVALID_ARG; } } static PRBool IsOnlyWhitespace(nsIContent* aContent) { PRBool onlyWhiteSpace = PR_FALSE; if (aContent->IsContentOfType(nsIContent::eTEXT)) { nsCOMPtr textContent = do_QueryInterface(aContent); onlyWhiteSpace = textContent->IsOnlyWhitespace(); } return onlyWhiteSpace; } /**************************************************** ** BEGIN TABLE SECTION ****************************************************/ // The term pseudo frame is being used instead of anonymous frame, since anonymous // frame has been used elsewhere to refer to frames that have generated content // aIncludeSpecial applies to captions, col groups, cols and cells. // These do not generate pseudo frame wrappers for foreign children. static PRBool IsTableRelated(PRUint8 aDisplay, PRBool aIncludeSpecial) { if ((aDisplay == NS_STYLE_DISPLAY_TABLE) || (aDisplay == NS_STYLE_DISPLAY_TABLE_HEADER_GROUP) || (aDisplay == NS_STYLE_DISPLAY_TABLE_ROW_GROUP) || (aDisplay == NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP) || (aDisplay == NS_STYLE_DISPLAY_TABLE_ROW)) { return PR_TRUE; } else if (aIncludeSpecial && ((aDisplay == NS_STYLE_DISPLAY_TABLE_CAPTION) || (aDisplay == NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP) || (aDisplay == NS_STYLE_DISPLAY_TABLE_COLUMN) || (aDisplay == NS_STYLE_DISPLAY_TABLE_CELL))) { return PR_TRUE; } else return PR_FALSE; } static PRBool IsTableRelated(nsIAtom* aParentType, PRBool aIncludeSpecial) { if ((nsLayoutAtoms::tableFrame == aParentType) || (nsLayoutAtoms::tableRowGroupFrame == aParentType) || (nsLayoutAtoms::tableRowFrame == aParentType)) { return PR_TRUE; } else if (aIncludeSpecial && ((nsLayoutAtoms::tableCaptionFrame == aParentType) || (nsLayoutAtoms::tableColGroupFrame == aParentType) || (nsLayoutAtoms::tableColFrame == aParentType) || IS_TABLE_CELL(aParentType))) { return PR_TRUE; } else return PR_FALSE; } static nsIFrame* AdjustCaptionParentFrame(nsIFrame* aParentFrame) { if (nsLayoutAtoms::tableFrame == aParentFrame->GetType()) { return aParentFrame->GetParent();; } return aParentFrame; } static nsresult ProcessPseudoFrame(nsPresContext* aPresContext, nsPseudoFrameData& aPseudoData, nsIFrame*& aParent) { nsresult rv = NS_OK; if (!aPresContext) return rv; aParent = aPseudoData.mFrame; nsFrameItems* items = &aPseudoData.mChildList; if (items && items->childList) { rv = aParent->SetInitialChildList(aPresContext, nsnull, items->childList); if (NS_FAILED(rv)) return rv; } aPseudoData.Reset(); return rv; } static nsresult ProcessPseudoRowGroupFrame(nsPresContext* aPresContext, nsPseudoFrameData& aPseudoData, nsIFrame*& aParent) { nsresult rv = NS_OK; if (!aPresContext) return rv; aParent = aPseudoData.mFrame; nsFrameItems* items = &aPseudoData.mChildList; if (items && items->childList) { nsTableRowGroupFrame* rgFrame = nsTableFrame::GetRowGroupFrame(aParent); rv = rgFrame->SetInitialChildList(aPresContext, nsnull, items->childList); if (NS_FAILED(rv)) return rv; } aPseudoData.Reset(); return rv; } static nsresult ProcessPseudoTableFrame(nsPresContext* aPresContext, nsPseudoFrames& aPseudoFrames, nsIFrame*& aParent) { nsresult rv = NS_OK; if (!aPresContext) return rv; // process the col group frame, if it exists if (aPseudoFrames.mColGroup.mFrame) { rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mColGroup, aParent); } // process the inner table frame rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mTableInner, aParent); // process the outer table frame aParent = aPseudoFrames.mTableOuter.mFrame; nsFrameItems* items = &aPseudoFrames.mTableOuter.mChildList; if (items && items->childList) { rv = aParent->SetInitialChildList(aPresContext, nsnull, items->childList); if (NS_FAILED(rv)) return rv; } nsFrameItems* captions = &aPseudoFrames.mTableOuter.mChildList2; if (captions && captions->childList) { rv = aParent->SetInitialChildList(aPresContext, nsLayoutAtoms::captionList, captions->childList); } aPseudoFrames.mTableOuter.Reset(); return rv; } static nsresult ProcessPseudoCellFrame(nsPresContext* aPresContext, nsPseudoFrames& aPseudoFrames, nsIFrame*& aParent) { nsresult rv = NS_OK; if (!aPresContext) return rv; rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mCellInner, aParent); if (NS_FAILED(rv)) return rv; rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mCellOuter, aParent); return rv; } // limit the processing up to the frame type indicated by aHighestType. // make a complete processing when aHighestType is null static nsresult ProcessPseudoFrames(nsFrameConstructorState& aState, nsIAtom* aHighestType, nsIFrame*& aHighestFrame) { nsresult rv = NS_OK; aHighestFrame = nsnull; #ifdef DEBUG if (gTablePseudoFrame) { printf("*** ProcessPseudoFrames enter***\n"); aState.mPseudoFrames.Dump(); } #endif nsPseudoFrames& pseudoFrames = aState.mPseudoFrames; nsPresContext* presContext = aState.mPresContext; if (nsLayoutAtoms::tableFrame == pseudoFrames.mLowestType) { if (pseudoFrames.mColGroup.mFrame) { rv = ProcessPseudoFrame(presContext, pseudoFrames.mColGroup, aHighestFrame); if (nsLayoutAtoms::tableColGroupFrame == aHighestType) return rv; } rv = ProcessPseudoTableFrame(presContext, pseudoFrames, aHighestFrame); if (nsLayoutAtoms::tableOuterFrame == aHighestType) return rv; if (pseudoFrames.mCellOuter.mFrame) { rv = ProcessPseudoCellFrame(presContext, pseudoFrames, aHighestFrame); if (IS_TABLE_CELL(aHighestType)) return rv; } if (pseudoFrames.mRow.mFrame) { rv = ProcessPseudoFrame(presContext, pseudoFrames.mRow, aHighestFrame); if (nsLayoutAtoms::tableRowFrame == aHighestType) return rv; } if (pseudoFrames.mRowGroup.mFrame) { rv = ProcessPseudoRowGroupFrame(presContext, pseudoFrames.mRowGroup, aHighestFrame); if (nsLayoutAtoms::tableRowGroupFrame == aHighestType) return rv; } } else if (nsLayoutAtoms::tableRowGroupFrame == pseudoFrames.mLowestType) { rv = ProcessPseudoRowGroupFrame(presContext, pseudoFrames.mRowGroup, aHighestFrame); if (nsLayoutAtoms::tableRowGroupFrame == aHighestType) return rv; if (pseudoFrames.mColGroup.mFrame) { nsIFrame* colGroupHigh; rv = ProcessPseudoFrame(presContext, pseudoFrames.mColGroup, colGroupHigh); if (aHighestFrame && nsLayoutAtoms::tableRowGroupFrame == aHighestFrame->GetType() && !pseudoFrames.mTableInner.mFrame) { // table frames are special they can have two types of pseudo frames // that need to be processed in one pass, we only need to link them if // the parent is not a pseudo where the link is already done // We sort this later out inside nsTableFrame. colGroupHigh->SetNextSibling(aHighestFrame); } aHighestFrame = colGroupHigh; if (nsLayoutAtoms::tableColGroupFrame == aHighestType) return rv; } if (pseudoFrames.mTableOuter.mFrame) { rv = ProcessPseudoTableFrame(presContext, pseudoFrames, aHighestFrame); if (nsLayoutAtoms::tableOuterFrame == aHighestType) return rv; } if (pseudoFrames.mCellOuter.mFrame) { rv = ProcessPseudoCellFrame(presContext, pseudoFrames, aHighestFrame); if (IS_TABLE_CELL(aHighestType)) return rv; } if (pseudoFrames.mRow.mFrame) { rv = ProcessPseudoFrame(presContext, pseudoFrames.mRow, aHighestFrame); if (nsLayoutAtoms::tableRowFrame == aHighestType) return rv; } } else if (nsLayoutAtoms::tableRowFrame == pseudoFrames.mLowestType) { rv = ProcessPseudoFrame(presContext, pseudoFrames.mRow, aHighestFrame); if (nsLayoutAtoms::tableRowFrame == aHighestType) return rv; if (pseudoFrames.mRowGroup.mFrame) { rv = ProcessPseudoRowGroupFrame(presContext, pseudoFrames.mRowGroup, aHighestFrame); if (nsLayoutAtoms::tableRowGroupFrame == aHighestType) return rv; } if (pseudoFrames.mColGroup.mFrame) { nsIFrame* colGroupHigh; rv = ProcessPseudoFrame(presContext, pseudoFrames.mColGroup, colGroupHigh); if (aHighestFrame && nsLayoutAtoms::tableRowGroupFrame == aHighestFrame->GetType() && !pseudoFrames.mTableInner.mFrame) { // table frames are special they can have two types of pseudo frames // that need to be processed in one pass, we only need to link them if // the parent is not a pseudo where the link is already done // We sort this later out inside nsTableFrame. colGroupHigh->SetNextSibling(aHighestFrame); } aHighestFrame = colGroupHigh; if (nsLayoutAtoms::tableColGroupFrame == aHighestType) return rv; } if (pseudoFrames.mTableOuter.mFrame) { rv = ProcessPseudoTableFrame(presContext, pseudoFrames, aHighestFrame); if (nsLayoutAtoms::tableOuterFrame == aHighestType) return rv; } if (pseudoFrames.mCellOuter.mFrame) { rv = ProcessPseudoCellFrame(presContext, pseudoFrames, aHighestFrame); if (IS_TABLE_CELL(aHighestType)) return rv; } } else if (IS_TABLE_CELL(pseudoFrames.mLowestType)) { rv = ProcessPseudoCellFrame(presContext, pseudoFrames, aHighestFrame); if (IS_TABLE_CELL(aHighestType)) return rv; if (pseudoFrames.mRow.mFrame) { rv = ProcessPseudoFrame(presContext, pseudoFrames.mRow, aHighestFrame); if (nsLayoutAtoms::tableRowFrame == aHighestType) return rv; } if (pseudoFrames.mRowGroup.mFrame) { rv = ProcessPseudoRowGroupFrame(presContext, pseudoFrames.mRowGroup, aHighestFrame); if (nsLayoutAtoms::tableRowGroupFrame == aHighestType) return rv; } if (pseudoFrames.mColGroup.mFrame) { nsIFrame* colGroupHigh; rv = ProcessPseudoFrame(presContext, pseudoFrames.mColGroup, colGroupHigh); if (aHighestFrame && nsLayoutAtoms::tableRowGroupFrame == aHighestFrame->GetType() && !pseudoFrames.mTableInner.mFrame) { // table frames are special they can have two types of pseudo frames // that need to be processed in one pass, we only need to link them if // the parent is not a pseudo where the link is already done // We sort this later out inside nsTableFrame. colGroupHigh->SetNextSibling(aHighestFrame); } aHighestFrame = colGroupHigh; if (nsLayoutAtoms::tableColGroupFrame == aHighestType) return rv; } if (pseudoFrames.mTableOuter.mFrame) { rv = ProcessPseudoTableFrame(presContext, pseudoFrames, aHighestFrame); } } else if (pseudoFrames.mColGroup.mFrame) { // process the col group frame rv = ProcessPseudoFrame(presContext, pseudoFrames.mColGroup, aHighestFrame); } return rv; } static nsresult ProcessPseudoFrames(nsFrameConstructorState& aState, nsFrameItems& aItems) { #ifdef DEBUG if (gTablePseudoFrame) { printf("*** ProcessPseudoFrames complete enter***\n"); aState.mPseudoFrames.Dump(); } #endif nsIFrame* highestFrame; nsresult rv = ProcessPseudoFrames(aState, nsnull, highestFrame); if (highestFrame) { aItems.AddChild(highestFrame); } #ifdef DEBUG if (gTablePseudoFrame) { printf("*** ProcessPseudoFrames complete leave, highestframe:%p***\n", NS_STATIC_CAST(void*, highestFrame)); aState.mPseudoFrames.Dump(); } #endif aState.mPseudoFrames.Reset(); return rv; } static nsresult ProcessPseudoFrames(nsFrameConstructorState& aState, nsIAtom* aHighestType) { #ifdef DEBUG if (gTablePseudoFrame) { printf("*** ProcessPseudoFrames limited enter highest:"); if (nsLayoutAtoms::tableOuterFrame == aHighestType) printf("OuterTable"); else if (nsLayoutAtoms::tableFrame == aHighestType) printf("InnerTable"); else if (nsLayoutAtoms::tableColGroupFrame == aHighestType) printf("ColGroup"); else if (nsLayoutAtoms::tableRowGroupFrame == aHighestType) printf("RowGroup"); else if (nsLayoutAtoms::tableRowFrame == aHighestType) printf("Row"); else if (IS_TABLE_CELL(aHighestType)) printf("Cell"); else NS_ASSERTION(PR_FALSE, "invalid call to ProcessPseudoFrames "); printf("***\n"); aState.mPseudoFrames.Dump(); } #endif nsIFrame* highestFrame; nsresult rv = ProcessPseudoFrames(aState, aHighestType, highestFrame); #ifdef DEBUG if (gTablePseudoFrame) { printf("*** ProcessPseudoFrames limited leave:%p***\n", NS_STATIC_CAST(void*, highestFrame)); aState.mPseudoFrames.Dump(); } #endif return rv; } nsresult nsCSSFrameConstructor::CreatePseudoTableFrame(nsTableCreator& aTableCreator, nsFrameConstructorState& aState, nsIFrame* aParentFrameIn) { nsresult rv = NS_OK; nsIFrame* parentFrame = (aState.mPseudoFrames.mCellInner.mFrame) ? aState.mPseudoFrames.mCellInner.mFrame : aParentFrameIn; if (!parentFrame) return rv; nsStyleContext *parentStyle; nsRefPtr childStyle; parentStyle = parentFrame->GetStyleContext(); nsIContent* parentContent = parentFrame->GetContent(); // create the SC for the inner table which will be the parent of the outer table's SC childStyle = mPresShell->StyleSet()->ResolvePseudoStyleFor(parentContent, nsCSSAnonBoxes::table, parentStyle); nsPseudoFrameData& pseudoOuter = aState.mPseudoFrames.mTableOuter; nsPseudoFrameData& pseudoInner = aState.mPseudoFrames.mTableInner; // construct the pseudo outer and inner as part of the pseudo frames nsFrameItems items; rv = ConstructTableFrame(aState, parentContent, parentFrame, childStyle, aTableCreator, PR_TRUE, items, PR_TRUE, pseudoOuter.mFrame, pseudoInner.mFrame); if (NS_FAILED(rv)) return rv; // set pseudo data for the newly created frames pseudoOuter.mChildList.AddChild(pseudoInner.mFrame); aState.mPseudoFrames.mLowestType = nsLayoutAtoms::tableFrame; // set pseudo data for the parent if (aState.mPseudoFrames.mCellInner.mFrame) { aState.mPseudoFrames.mCellInner.mChildList.AddChild(pseudoOuter.mFrame); } #ifdef DEBUG if (gTablePseudoFrame) { printf("*** CreatePseudoTableFrame ***\n"); aState.mPseudoFrames.Dump(); } #endif return rv; } nsresult nsCSSFrameConstructor::CreatePseudoRowGroupFrame(nsTableCreator& aTableCreator, nsFrameConstructorState& aState, nsIFrame* aParentFrameIn) { nsresult rv = NS_OK; nsIFrame* parentFrame = (aState.mPseudoFrames.mTableInner.mFrame) ? aState.mPseudoFrames.mTableInner.mFrame : aParentFrameIn; if (!parentFrame) return rv; nsStyleContext *parentStyle; nsRefPtr childStyle; parentStyle = parentFrame->GetStyleContext(); nsIContent* parentContent = parentFrame->GetContent(); childStyle = mPresShell->StyleSet()->ResolvePseudoStyleFor(parentContent, nsCSSAnonBoxes::tableRowGroup, parentStyle); nsPseudoFrameData& pseudo = aState.mPseudoFrames.mRowGroup; // construct the pseudo row group as part of the pseudo frames PRBool pseudoParent; nsFrameItems items; rv = ConstructTableRowGroupFrame(aState, parentContent, parentFrame, childStyle, aTableCreator, PR_TRUE, items, pseudo.mFrame, pseudoParent); if (NS_FAILED(rv)) return rv; // set pseudo data for the newly created frames aState.mPseudoFrames.mLowestType = nsLayoutAtoms::tableRowGroupFrame; // set pseudo data for the parent if (aState.mPseudoFrames.mTableInner.mFrame) { aState.mPseudoFrames.mTableInner.mChildList.AddChild(pseudo.mFrame); } #ifdef DEBUG if (gTablePseudoFrame) { printf("*** CreatePseudoRowGroupFrame ***\n"); aState.mPseudoFrames.Dump(); } #endif return rv; } nsresult nsCSSFrameConstructor::CreatePseudoColGroupFrame(nsTableCreator& aTableCreator, nsFrameConstructorState& aState, nsIFrame* aParentFrameIn) { nsresult rv = NS_OK; nsIFrame* parentFrame = (aState.mPseudoFrames.mTableInner.mFrame) ? aState.mPseudoFrames.mTableInner.mFrame : aParentFrameIn; if (!parentFrame) return rv; nsStyleContext *parentStyle; nsRefPtr childStyle; parentStyle = parentFrame->GetStyleContext(); nsIContent* parentContent = parentFrame->GetContent(); childStyle = mPresShell->StyleSet()->ResolvePseudoStyleFor(parentContent, nsCSSAnonBoxes::tableColGroup, parentStyle); nsPseudoFrameData& pseudo = aState.mPseudoFrames.mColGroup; // construct the pseudo col group as part of the pseudo frames PRBool pseudoParent; nsFrameItems items; rv = ConstructTableColGroupFrame(aState, parentContent, parentFrame, childStyle, aTableCreator, PR_TRUE, items, pseudo.mFrame, pseudoParent); if (NS_FAILED(rv)) return rv; ((nsTableColGroupFrame*)pseudo.mFrame)->SetColType(eColGroupAnonymousCol); // Do not set aState.mPseudoFrames.mLowestType here as colgroup frame will // be always below a table frame but we can not descent any further as col // frames can not have children and will not wrap table foreign frames. // set pseudo data for the parent if (aState.mPseudoFrames.mTableInner.mFrame) { aState.mPseudoFrames.mTableInner.mChildList.AddChild(pseudo.mFrame); } #ifdef DEBUG if (gTablePseudoFrame) { printf("*** CreatePseudoColGroupFrame ***\n"); aState.mPseudoFrames.Dump(); } #endif return rv; } nsresult nsCSSFrameConstructor::CreatePseudoRowFrame(nsTableCreator& aTableCreator, nsFrameConstructorState& aState, nsIFrame* aParentFrameIn) { nsresult rv = NS_OK; nsIFrame* parentFrame = aParentFrameIn; if (aState.mPseudoFrames.mRowGroup.mFrame) { parentFrame = (nsIFrame*) nsTableFrame::GetRowGroupFrame(aState.mPseudoFrames.mRowGroup.mFrame); } if (!parentFrame) return rv; nsStyleContext *parentStyle; nsRefPtr childStyle; parentStyle = parentFrame->GetStyleContext(); nsIContent* parentContent = parentFrame->GetContent(); childStyle = mPresShell->StyleSet()->ResolvePseudoStyleFor(parentContent, nsCSSAnonBoxes::tableRow, parentStyle); nsPseudoFrameData& pseudo = aState.mPseudoFrames.mRow; // construct the pseudo row as part of the pseudo frames PRBool pseudoParent; nsFrameItems items; rv = ConstructTableRowFrame(aState, parentContent, parentFrame, childStyle, aTableCreator, PR_TRUE, items, pseudo.mFrame, pseudoParent); if (NS_FAILED(rv)) return rv; aState.mPseudoFrames.mLowestType = nsLayoutAtoms::tableRowFrame; // set pseudo data for the parent if (aState.mPseudoFrames.mRowGroup.mFrame) { aState.mPseudoFrames.mRowGroup.mChildList.AddChild(pseudo.mFrame); } #ifdef DEBUG if (gTablePseudoFrame) { printf("*** CreatePseudoRowFrame ***\n"); aState.mPseudoFrames.Dump(); } #endif return rv; } nsresult nsCSSFrameConstructor::CreatePseudoCellFrame(nsTableCreator& aTableCreator, nsFrameConstructorState& aState, nsIFrame* aParentFrameIn) { nsresult rv = NS_OK; nsIFrame* parentFrame = (aState.mPseudoFrames.mRow.mFrame) ? aState.mPseudoFrames.mRow.mFrame : aParentFrameIn; if (!parentFrame) return rv; nsStyleContext *parentStyle; nsRefPtr childStyle; parentStyle = parentFrame->GetStyleContext(); nsIContent* parentContent = parentFrame->GetContent(); childStyle = mPresShell->StyleSet()->ResolvePseudoStyleFor(parentContent, nsCSSAnonBoxes::tableCell, parentStyle); nsPseudoFrameData& pseudoOuter = aState.mPseudoFrames.mCellOuter; nsPseudoFrameData& pseudoInner = aState.mPseudoFrames.mCellInner; // construct the pseudo outer and inner as part of the pseudo frames PRBool pseudoParent; nsFrameItems items; rv = ConstructTableCellFrame(aState, parentContent, parentFrame, childStyle, aTableCreator, PR_TRUE, items, pseudoOuter.mFrame, pseudoInner.mFrame, pseudoParent); if (NS_FAILED(rv)) return rv; // set pseudo data for the newly created frames pseudoOuter.mChildList.AddChild(pseudoInner.mFrame); // give it nsLayoutAtoms::tableCellFrame, if it is really nsLayoutAtoms::bcTableCellFrame, it will match later aState.mPseudoFrames.mLowestType = nsLayoutAtoms::tableCellFrame; // set pseudo data for the parent if (aState.mPseudoFrames.mRow.mFrame) { aState.mPseudoFrames.mRow.mChildList.AddChild(pseudoOuter.mFrame); } #ifdef DEBUG if (gTablePseudoFrame) { printf("*** CreatePseudoCellFrame ***\n"); aState.mPseudoFrames.Dump(); } #endif return rv; } // called if the parent is not a table nsresult nsCSSFrameConstructor::GetPseudoTableFrame(nsTableCreator& aTableCreator, nsFrameConstructorState& aState, nsIFrame& aParentFrameIn) { nsresult rv = NS_OK; nsPseudoFrames& pseudoFrames = aState.mPseudoFrames; nsIAtom* parentFrameType = aParentFrameIn.GetType(); if (pseudoFrames.IsEmpty()) { PRBool created = PR_FALSE; if (nsLayoutAtoms::tableRowGroupFrame == parentFrameType) { // row group parent rv = CreatePseudoRowFrame(aTableCreator, aState, &aParentFrameIn); if (NS_FAILED(rv)) return rv; created = PR_TRUE; } if (created || (nsLayoutAtoms::tableRowFrame == parentFrameType)) { // row parent rv = CreatePseudoCellFrame(aTableCreator, aState, &aParentFrameIn); if (NS_FAILED(rv)) return rv; } rv = CreatePseudoTableFrame(aTableCreator, aState, &aParentFrameIn); } else { if (!pseudoFrames.mTableInner.mFrame) { if (pseudoFrames.mRowGroup.mFrame && !(pseudoFrames.mRow.mFrame)) { rv = CreatePseudoRowFrame(aTableCreator, aState); if (NS_FAILED(rv)) return rv; } if (pseudoFrames.mRow.mFrame && !(pseudoFrames.mCellOuter.mFrame)) { rv = CreatePseudoCellFrame(aTableCreator, aState); if (NS_FAILED(rv)) return rv; } CreatePseudoTableFrame(aTableCreator, aState); } } return rv; } // called if the parent is not a col group nsresult nsCSSFrameConstructor::GetPseudoColGroupFrame(nsTableCreator& aTableCreator, nsFrameConstructorState& aState, nsIFrame& aParentFrameIn) { nsresult rv = NS_OK; nsPseudoFrames& pseudoFrames = aState.mPseudoFrames; nsIAtom* parentFrameType = aParentFrameIn.GetType(); if (pseudoFrames.IsEmpty()) { PRBool created = PR_FALSE; if (nsLayoutAtoms::tableRowGroupFrame == parentFrameType) { // row group parent rv = CreatePseudoRowFrame(aTableCreator, aState, &aParentFrameIn); created = PR_TRUE; } if (created || (nsLayoutAtoms::tableRowFrame == parentFrameType)) { // row parent rv = CreatePseudoCellFrame(aTableCreator, aState, &aParentFrameIn); created = PR_TRUE; } if (created || IS_TABLE_CELL(parentFrameType) || // cell parent (nsLayoutAtoms::tableCaptionFrame == parentFrameType) || // caption parent !IsTableRelated(parentFrameType, PR_TRUE)) { // block parent rv = CreatePseudoTableFrame(aTableCreator, aState, &aParentFrameIn); } rv = CreatePseudoColGroupFrame(aTableCreator, aState, &aParentFrameIn); } else { if (!pseudoFrames.mColGroup.mFrame) { if (!pseudoFrames.mTableInner.mFrame) { if (pseudoFrames.mRowGroup.mFrame && !(pseudoFrames.mRow.mFrame)) { rv = CreatePseudoRowFrame(aTableCreator, aState); } if (pseudoFrames.mRow.mFrame && !(pseudoFrames.mCellOuter.mFrame)) { rv = CreatePseudoCellFrame(aTableCreator, aState); } if (pseudoFrames.mCellOuter.mFrame && !(pseudoFrames.mTableOuter.mFrame)) { rv = CreatePseudoTableFrame(aTableCreator, aState); } } rv = CreatePseudoColGroupFrame(aTableCreator, aState); } } return rv; } // called if the parent is not a row group nsresult nsCSSFrameConstructor::GetPseudoRowGroupFrame(nsTableCreator& aTableCreator, nsFrameConstructorState& aState, nsIFrame& aParentFrameIn) { nsresult rv = NS_OK; nsPseudoFrames& pseudoFrames = aState.mPseudoFrames; nsIAtom* parentFrameType = aParentFrameIn.GetType(); if (!pseudoFrames.mLowestType) { PRBool created = PR_FALSE; if (nsLayoutAtoms::tableRowFrame == parentFrameType) { // row parent rv = CreatePseudoCellFrame(aTableCreator, aState, &aParentFrameIn); created = PR_TRUE; } if (created || IS_TABLE_CELL(parentFrameType) || // cell parent (nsLayoutAtoms::tableCaptionFrame == parentFrameType) || // caption parent !IsTableRelated(parentFrameType, PR_TRUE)) { // block parent rv = CreatePseudoTableFrame(aTableCreator, aState, &aParentFrameIn); } rv = CreatePseudoRowGroupFrame(aTableCreator, aState, &aParentFrameIn); } else { if (!pseudoFrames.mRowGroup.mFrame) { if (pseudoFrames.mRow.mFrame && !(pseudoFrames.mCellOuter.mFrame)) { rv = CreatePseudoCellFrame(aTableCreator, aState); } if (pseudoFrames.mCellOuter.mFrame && !(pseudoFrames.mTableOuter.mFrame)) { rv = CreatePseudoTableFrame(aTableCreator, aState); } rv = CreatePseudoRowGroupFrame(aTableCreator, aState); } } return rv; } // called if the parent is not a row nsresult nsCSSFrameConstructor::GetPseudoRowFrame(nsTableCreator& aTableCreator, nsFrameConstructorState& aState, nsIFrame& aParentFrameIn) { nsresult rv = NS_OK; nsPseudoFrames& pseudoFrames = aState.mPseudoFrames; nsIAtom* parentFrameType = aParentFrameIn.GetType(); if (!pseudoFrames.mLowestType) { PRBool created = PR_FALSE; if (IS_TABLE_CELL(parentFrameType) || // cell parent (nsLayoutAtoms::tableCaptionFrame == parentFrameType) || // caption parent !IsTableRelated(parentFrameType, PR_TRUE)) { // block parent rv = CreatePseudoTableFrame(aTableCreator, aState, &aParentFrameIn); created = PR_TRUE; } if (created || (nsLayoutAtoms::tableFrame == parentFrameType)) { // table parent rv = CreatePseudoRowGroupFrame(aTableCreator, aState, &aParentFrameIn); } rv = CreatePseudoRowFrame(aTableCreator, aState, &aParentFrameIn); } else { if (!pseudoFrames.mRow.mFrame) { if (pseudoFrames.mCellOuter.mFrame && !pseudoFrames.mTableOuter.mFrame) { rv = CreatePseudoTableFrame(aTableCreator, aState); } if (pseudoFrames.mTableInner.mFrame && !(pseudoFrames.mRowGroup.mFrame)) { rv = CreatePseudoRowGroupFrame(aTableCreator, aState); } rv = CreatePseudoRowFrame(aTableCreator, aState); } } return rv; } // called if the parent is not a cell or block nsresult nsCSSFrameConstructor::GetPseudoCellFrame(nsTableCreator& aTableCreator, nsFrameConstructorState& aState, nsIFrame& aParentFrameIn) { nsresult rv = NS_OK; nsPseudoFrames& pseudoFrames = aState.mPseudoFrames; nsIAtom* parentFrameType = aParentFrameIn.GetType(); if (!pseudoFrames.mLowestType) { PRBool created = PR_FALSE; if (nsLayoutAtoms::tableFrame == parentFrameType) { // table parent rv = CreatePseudoRowGroupFrame(aTableCreator, aState, &aParentFrameIn); created = PR_TRUE; } if (created || (nsLayoutAtoms::tableRowGroupFrame == parentFrameType)) { // row group parent rv = CreatePseudoRowFrame(aTableCreator, aState, &aParentFrameIn); created = PR_TRUE; } rv = CreatePseudoCellFrame(aTableCreator, aState, &aParentFrameIn); } else if (!pseudoFrames.mCellOuter.mFrame) { if (pseudoFrames.mTableInner.mFrame && !(pseudoFrames.mRowGroup.mFrame)) { rv = CreatePseudoRowGroupFrame(aTableCreator, aState); } if (pseudoFrames.mRowGroup.mFrame && !(pseudoFrames.mRow.mFrame)) { rv = CreatePseudoRowFrame(aTableCreator, aState); } rv = CreatePseudoCellFrame(aTableCreator, aState); } return rv; } nsresult nsCSSFrameConstructor::GetParentFrame(nsTableCreator& aTableCreator, nsIFrame& aParentFrameIn, nsIAtom* aChildFrameType, nsFrameConstructorState& aState, nsIFrame*& aParentFrame, PRBool& aIsPseudoParent) { nsresult rv = NS_OK; nsIAtom* parentFrameType = aParentFrameIn.GetType(); nsIFrame* pseudoParentFrame = nsnull; nsPseudoFrames& pseudoFrames = aState.mPseudoFrames; aParentFrame = &aParentFrameIn; aIsPseudoParent = PR_FALSE; if (nsLayoutAtoms::tableOuterFrame == aChildFrameType) { // table child if (IsTableRelated(parentFrameType, PR_TRUE) && (nsLayoutAtoms::tableCaptionFrame != parentFrameType) ) { // need pseudo cell parent rv = GetPseudoCellFrame(aTableCreator, aState, aParentFrameIn); if (NS_FAILED(rv)) return rv; pseudoParentFrame = pseudoFrames.mCellInner.mFrame; } } else if (nsLayoutAtoms::tableCaptionFrame == aChildFrameType) { // caption child if (nsLayoutAtoms::tableOuterFrame != parentFrameType) { // need pseudo table parent rv = GetPseudoTableFrame(aTableCreator, aState, aParentFrameIn); if (NS_FAILED(rv)) return rv; pseudoParentFrame = pseudoFrames.mTableOuter.mFrame; } } else if (nsLayoutAtoms::tableColGroupFrame == aChildFrameType) { // col group child if (nsLayoutAtoms::tableFrame != parentFrameType) { // need pseudo table parent rv = GetPseudoTableFrame(aTableCreator, aState, aParentFrameIn); if (NS_FAILED(rv)) return rv; pseudoParentFrame = pseudoFrames.mTableInner.mFrame; } } else if (nsLayoutAtoms::tableColFrame == aChildFrameType) { // col child if (nsLayoutAtoms::tableColGroupFrame != parentFrameType) { // need pseudo col group parent rv = GetPseudoColGroupFrame(aTableCreator, aState, aParentFrameIn); if (NS_FAILED(rv)) return rv; pseudoParentFrame = pseudoFrames.mColGroup.mFrame; } } else if (nsLayoutAtoms::tableRowGroupFrame == aChildFrameType) { // row group child // XXX can this go away? if (nsLayoutAtoms::tableFrame != parentFrameType) { // trees allow row groups to contain row groups, so don't create pseudo frames rv = GetPseudoTableFrame(aTableCreator, aState, aParentFrameIn); if (NS_FAILED(rv)) return rv; pseudoParentFrame = pseudoFrames.mTableInner.mFrame; } } else if (nsLayoutAtoms::tableRowFrame == aChildFrameType) { // row child if (nsLayoutAtoms::tableRowGroupFrame != parentFrameType) { // need pseudo row group parent rv = GetPseudoRowGroupFrame(aTableCreator, aState, aParentFrameIn); if (NS_FAILED(rv)) return rv; pseudoParentFrame = pseudoFrames.mRowGroup.mFrame; } } else if (IS_TABLE_CELL(aChildFrameType)) { // cell child if (nsLayoutAtoms::tableRowFrame != parentFrameType) { // need pseudo row parent rv = GetPseudoRowFrame(aTableCreator, aState, aParentFrameIn); if (NS_FAILED(rv)) return rv; pseudoParentFrame = pseudoFrames.mRow.mFrame; } } else if (nsLayoutAtoms::tableFrame == aChildFrameType) { // invalid NS_ASSERTION(PR_FALSE, "GetParentFrame called on nsLayoutAtoms::tableFrame child"); } else { // foreign frame if (IsTableRelated(parentFrameType, PR_FALSE)) { // need pseudo cell parent rv = GetPseudoCellFrame(aTableCreator, aState, aParentFrameIn); if (NS_FAILED(rv)) return rv; pseudoParentFrame = pseudoFrames.mCellInner.mFrame; } } if (pseudoParentFrame) { aParentFrame = pseudoParentFrame; aIsPseudoParent = PR_TRUE; } return rv; } static PRBool IsSpecialContent(nsIContent* aContent, nsIAtom* aTag, PRInt32 aNameSpaceID, nsStyleContext* aStyleContext) { // Gross hack. Return true if this is a content node that we'd create a // frame for based on something other than display -- in other words if this // is a node that could never have a nsTableCellFrame, for example. if (aContent->IsContentOfType(nsIContent::eHTML) || aNameSpaceID == kNameSpaceID_XHTML) { // XXXbz this is duplicating some logic from ConstructHTMLFrame.... // Would be nice to avoid that. :( if (aTag == nsHTMLAtoms::input) { nsCOMPtr control = do_QueryInterface(aContent); if (control && NS_FORM_INPUT_HIDDEN == control->GetType()) return PR_FALSE; // input hidden does not create a special frame } return aTag == nsHTMLAtoms::img || aTag == nsHTMLAtoms::br || aTag == nsHTMLAtoms::wbr || aTag == nsHTMLAtoms::input || aTag == nsHTMLAtoms::textarea || aTag == nsHTMLAtoms::select || aTag == nsHTMLAtoms::object || aTag == nsHTMLAtoms::applet || aTag == nsHTMLAtoms::embed || aTag == nsHTMLAtoms::fieldset || aTag == nsHTMLAtoms::legend || aTag == nsHTMLAtoms::frameset || aTag == nsHTMLAtoms::iframe || aTag == nsHTMLAtoms::spacer || aTag == nsHTMLAtoms::button || aTag == nsHTMLAtoms::isindex || aTag == nsHTMLAtoms::canvas; } if (aNameSpaceID == kNameSpaceID_XUL) return #ifdef MOZ_XUL aTag == nsXULAtoms::button || aTag == nsXULAtoms::checkbox || aTag == nsXULAtoms::radio || aTag == nsXULAtoms::autorepeatbutton || aTag == nsXULAtoms::titlebar || aTag == nsXULAtoms::resizer || aTag == nsXULAtoms::image || aTag == nsXULAtoms::spring || aTag == nsHTMLAtoms::spacer || aTag == nsXULAtoms::treechildren || aTag == nsXULAtoms::treecol || aTag == nsXULAtoms::text || aTag == nsXULAtoms::description || aTag == nsHTMLAtoms::label || aTag == nsXULAtoms::menu || aTag == nsXULAtoms::menuitem || aTag == nsXULAtoms::menubutton || aTag == nsXULAtoms::menubar || aTag == nsXULAtoms::popupgroup || aTag == nsXULAtoms::iframe || aTag == nsXULAtoms::editor || aTag == nsXULAtoms::browser || aTag == nsXULAtoms::progressmeter || #endif aTag == nsXULAtoms::slider || aTag == nsXULAtoms::scrollbar || aTag == nsXULAtoms::nativescrollbar || aTag == nsXULAtoms::scrollbarbutton || #ifdef MOZ_XUL aTag == nsXULAtoms::splitter || aTag == nsXULAtoms::grippy || #endif PR_FALSE; #ifdef MOZ_SVG if (aNameSpaceID == kNameSpaceID_SVG && nsSVGUtils::SVGEnabled()) return aTag == nsSVGAtoms::svg || aTag == nsSVGAtoms::g || aTag == nsSVGAtoms::polygon || aTag == nsSVGAtoms::polyline || aTag == nsSVGAtoms::circle || aTag == nsSVGAtoms::defs || aTag == nsSVGAtoms::ellipse || aTag == nsSVGAtoms::line || aTag == nsSVGAtoms::rect || #ifdef MOZ_SVG_FOREIGNOBJECT aTag == nsSVGAtoms::foreignObject || #endif aTag == nsSVGAtoms::path || aTag == nsSVGAtoms::text || aTag == nsSVGAtoms::tspan || aTag == nsSVGAtoms::linearGradient || aTag == nsSVGAtoms::radialGradient || aTag == nsSVGAtoms::stop || aTag == nsSVGAtoms::use || aTag == nsSVGAtoms::marker || aTag == nsSVGAtoms::image || aTag == nsSVGAtoms::clipPath; #endif #ifdef MOZ_MATHML if (aNameSpaceID == kNameSpaceID_MathML) return aTag == nsMathMLAtoms::mi_ || aTag == nsMathMLAtoms::mn_ || aTag == nsMathMLAtoms::ms_ || aTag == nsMathMLAtoms::mtext_ || aTag == nsMathMLAtoms::mo_ || aTag == nsMathMLAtoms::mfrac_ || aTag == nsMathMLAtoms::msup_ || aTag == nsMathMLAtoms::msub_ || aTag == nsMathMLAtoms::msubsup_ || aTag == nsMathMLAtoms::munder_ || aTag == nsMathMLAtoms::mover_ || aTag == nsMathMLAtoms::munderover_ || aTag == nsMathMLAtoms::mphantom_ || aTag == nsMathMLAtoms::mpadded_ || aTag == nsMathMLAtoms::mspace_ || aTag == nsMathMLAtoms::mfenced_ || aTag == nsMathMLAtoms::mmultiscripts_ || aTag == nsMathMLAtoms::mstyle_ || aTag == nsMathMLAtoms::msqrt_ || aTag == nsMathMLAtoms::mroot_ || aTag == nsMathMLAtoms::maction_ || aTag == nsMathMLAtoms::mrow_ || aTag == nsMathMLAtoms::merror_ || aTag == nsMathMLAtoms::none_ || aTag == nsMathMLAtoms::mprescripts_ || (aTag == nsMathMLAtoms::mtable_ && aStyleContext->GetStyleDisplay()->mDisplay == NS_STYLE_DISPLAY_TABLE) || aTag == nsMathMLAtoms::math; #endif return PR_FALSE; } nsresult nsCSSFrameConstructor::AdjustParentFrame(nsIContent* aChildContent, const nsStyleDisplay* aChildDisplay, nsIAtom* aTag, PRInt32 aNameSpaceID, nsStyleContext* aChildStyle, nsIFrame* & aParentFrame, nsFrameItems* & aFrameItems, nsFrameConstructorState& aState, nsFrameConstructorSaveState& aSaveState, PRBool& aCreatedPseudo) { NS_PRECONDITION(aChildDisplay, "Must have child's display struct"); NS_PRECONDITION(aFrameItems, "Must have frame items to work with"); aCreatedPseudo = PR_FALSE; if (!aParentFrame) { // Nothing to do here return NS_OK; } PRBool childIsSpecialContent = PR_FALSE; // lazy lookup // Only use the outer table frame as parent if the child is going to use a // tableCaptionFrame, otherwise the inner table frame is the parent // (bug 341858). if (aParentFrame->GetType() == nsLayoutAtoms::tableOuterFrame) { childIsSpecialContent = IsSpecialContent(aChildContent, aTag, aNameSpaceID, aChildStyle); if (childIsSpecialContent || (aChildStyle->GetStyleDisplay()->mDisplay != NS_STYLE_DISPLAY_TABLE_CAPTION)) { aParentFrame = aParentFrame->GetContentInsertionFrame(); } } // If our parent is a table, table-row-group, or table-row, and // we're not table-related in any way, we have to create table // pseudo-frames so that we have a table cell to live in. if (IsTableRelated(aParentFrame->GetType(), PR_FALSE) && (!IsTableRelated(aChildDisplay->mDisplay, PR_TRUE) || // Also need to create a pseudo-parent if the child is going to end up // with a frame based on something other than display. childIsSpecialContent || // looked it up before IsSpecialContent(aChildContent, aTag, aNameSpaceID, aChildStyle))) { nsTableCreator tableCreator(aState.mPresShell); nsresult rv = GetPseudoCellFrame(tableCreator, aState, *aParentFrame); if (NS_FAILED(rv)) { return rv; } NS_ASSERTION(aState.mPseudoFrames.mCellInner.mFrame, "Must have inner cell frame now!"); aParentFrame = aState.mPseudoFrames.mCellInner.mFrame; aFrameItems = &aState.mPseudoFrames.mCellInner.mChildList; // We pushed an anonymous table cell. The inner block of this // needs to become the float containing block. aState.PushFloatContainingBlock(aParentFrame, aSaveState, PR_FALSE, PR_FALSE); aCreatedPseudo = PR_TRUE; } return NS_OK; } // Construct the outer, inner table frames and the children frames for the table. // XXX Page break frames for pseudo table frames are not constructed to avoid the risk // associated with revising the pseudo frame mechanism. The long term solution // of having frames handle page-break-before/after will solve the problem. nsresult nsCSSFrameConstructor::ConstructTableFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aContentParent, nsStyleContext* aStyleContext, nsTableCreator& aTableCreator, PRBool aIsPseudo, nsFrameItems& aChildItems, PRBool aAllowOutOfFlow, nsIFrame*& aNewOuterFrame, nsIFrame*& aNewInnerFrame) { nsresult rv = NS_OK; // Create the outer table frame which holds the caption and inner table frame aTableCreator.CreateTableOuterFrame(&aNewOuterFrame); nsIFrame* parentFrame = aContentParent; nsFrameItems* frameItems = &aChildItems; // We may need to push a float containing block nsFrameConstructorSaveState floatSaveState; if (!aIsPseudo) { // this frame may have a pseudo parent PRBool hasPseudoParent = PR_FALSE; GetParentFrame(aTableCreator, *parentFrame, nsLayoutAtoms::tableOuterFrame, aState, parentFrame, hasPseudoParent); if (!hasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aChildItems); } if (hasPseudoParent) { aState.PushFloatContainingBlock(parentFrame, floatSaveState, PR_FALSE, PR_FALSE); frameItems = &aState.mPseudoFrames.mCellInner.mChildList; if (aState.mPseudoFrames.mTableOuter.mFrame) { ProcessPseudoFrames(aState, nsLayoutAtoms::tableOuterFrame); } } } // create the pseudo SC for the outer table as a child of the inner SC nsRefPtr outerStyleContext; outerStyleContext = mPresShell->StyleSet()-> ResolvePseudoStyleFor(aContent, nsCSSAnonBoxes::tableOuter, aStyleContext); const nsStyleDisplay* disp = outerStyleContext->GetStyleDisplay(); nsIFrame* geometricParent = aAllowOutOfFlow ? aState.GetGeometricParent(disp, parentFrame) : parentFrame; // Init the table outer frame and see if we need to create a view, e.g. // the frame is absolutely positioned InitAndRestoreFrame(aState, aContent, geometricParent, outerStyleContext, nsnull, aNewOuterFrame); nsHTMLContainerFrame::CreateViewForFrame(aNewOuterFrame, aContentParent, PR_FALSE); // Create the inner table frame aTableCreator.CreateTableFrame(&aNewInnerFrame); InitAndRestoreFrame(aState, aContent, aNewOuterFrame, aStyleContext, nsnull, aNewInnerFrame); if (!aIsPseudo) { // Put the newly created frames into the right child list aNewOuterFrame->SetInitialChildList(aState.mPresContext, nsnull, aNewInnerFrame); rv = aState.AddChild(aNewOuterFrame, *frameItems, disp, aContent, outerStyleContext, parentFrame, aAllowOutOfFlow, aAllowOutOfFlow); if (NS_FAILED(rv)) { return rv; } nsFrameItems childItems; nsIFrame* captionFrame; rv = TableProcessChildren(aState, aContent, aNewInnerFrame, aTableCreator, childItems, captionFrame); // XXXbz what about cleaning up? if (NS_FAILED(rv)) return rv; // if there are any anonymous children for the table, create frames for them CreateAnonymousFrames(nsnull, aState, aContent, aNewInnerFrame, PR_FALSE, childItems); // Set the inner table frame's initial primary list aNewInnerFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); // Set the outer table frame's primary and option lists if (captionFrame) { aNewOuterFrame->SetInitialChildList(aState.mPresContext, nsLayoutAtoms::captionList, captionFrame); } } return rv; } nsresult nsCSSFrameConstructor::ConstructTableCaptionFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrameIn, nsStyleContext* aStyleContext, nsTableCreator& aTableCreator, nsFrameItems& aChildItems, nsIFrame*& aNewFrame, PRBool& aIsPseudoParent) { nsresult rv = NS_OK; if (!aParentFrameIn) return rv; nsIFrame* parentFrame = aParentFrameIn; aIsPseudoParent = PR_FALSE; // this frame may have a pseudo parent GetParentFrame(aTableCreator, *aParentFrameIn, nsLayoutAtoms::tableCaptionFrame, aState, parentFrame, aIsPseudoParent); if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aChildItems); } rv = aTableCreator.CreateTableCaptionFrame(&aNewFrame); if (NS_FAILED(rv)) return rv; InitAndRestoreFrame(aState, aContent, parentFrame, aStyleContext, nsnull, aNewFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(aNewFrame, nsnull, PR_FALSE); PRBool haveFirstLetterStyle, haveFirstLineStyle; HaveSpecialBlockStyle(aContent, aStyleContext, &haveFirstLetterStyle, &haveFirstLineStyle); // The caption frame is a float container nsFrameConstructorSaveState floatSaveState; aState.PushFloatContainingBlock(aNewFrame, floatSaveState, haveFirstLetterStyle, haveFirstLineStyle); nsFrameItems childItems; // pass in aTableCreator so ProcessChildren will call TableProcessChildren rv = ProcessChildren(aState, aContent, aNewFrame, PR_TRUE, childItems, PR_TRUE, &aTableCreator); if (NS_FAILED(rv)) return rv; aNewFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); if (aIsPseudoParent) { aState.mPseudoFrames.mTableOuter.mChildList2.AddChild(aNewFrame); } return rv; } nsresult nsCSSFrameConstructor::ConstructTableRowGroupFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrameIn, nsStyleContext* aStyleContext, nsTableCreator& aTableCreator, PRBool aIsPseudo, nsFrameItems& aChildItems, nsIFrame*& aNewFrame, PRBool& aIsPseudoParent) { nsresult rv = NS_OK; if (!aParentFrameIn) return rv; nsIFrame* parentFrame = aParentFrameIn; aIsPseudoParent = PR_FALSE; if (!aIsPseudo) { // this frame may have a pseudo parent GetParentFrame(aTableCreator, *aParentFrameIn, nsLayoutAtoms::tableRowGroupFrame, aState, parentFrame, aIsPseudoParent); if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aChildItems); } if (!aIsPseudo && aIsPseudoParent && aState.mPseudoFrames.mRowGroup.mFrame) { ProcessPseudoFrames(aState, nsLayoutAtoms::tableRowGroupFrame); } } const nsStyleDisplay* styleDisplay = aStyleContext->GetStyleDisplay(); rv = aTableCreator.CreateTableRowGroupFrame(&aNewFrame); nsIFrame* scrollFrame = nsnull; if (styleDisplay->IsScrollableOverflow()) { // Create an area container for the frame BuildScrollFrame(aState, aContent, aStyleContext, aNewFrame, parentFrame, nsnull, scrollFrame, aStyleContext); } else { if (NS_FAILED(rv)) return rv; InitAndRestoreFrame(aState, aContent, parentFrame, aStyleContext, nsnull, aNewFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(aNewFrame, nsnull, PR_FALSE); } if (!aIsPseudo) { nsFrameItems childItems; nsIFrame* captionFrame; rv = TableProcessChildren(aState, aContent, aNewFrame, aTableCreator, childItems, captionFrame); if (NS_FAILED(rv)) return rv; // if there are any anonymous children for the table, create frames for them CreateAnonymousFrames(nsnull, aState, aContent, aNewFrame, PR_FALSE, childItems); aNewFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); if (aIsPseudoParent) { nsIFrame* child = (scrollFrame) ? scrollFrame : aNewFrame; aState.mPseudoFrames.mTableInner.mChildList.AddChild(child); } } // if there is a scroll frame, use it as the one constructed if (scrollFrame) { aNewFrame = scrollFrame; } return rv; } nsresult nsCSSFrameConstructor::ConstructTableColGroupFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrameIn, nsStyleContext* aStyleContext, nsTableCreator& aTableCreator, PRBool aIsPseudo, nsFrameItems& aChildItems, nsIFrame*& aNewFrame, PRBool& aIsPseudoParent) { nsresult rv = NS_OK; if (!aParentFrameIn) return rv; nsIFrame* parentFrame = aParentFrameIn; aIsPseudoParent = PR_FALSE; if (!aIsPseudo) { // this frame may have a pseudo parent GetParentFrame(aTableCreator, *aParentFrameIn, nsLayoutAtoms::tableColGroupFrame, aState, parentFrame, aIsPseudoParent); if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aChildItems); } if (!aIsPseudo && aIsPseudoParent && aState.mPseudoFrames.mColGroup.mFrame) { ProcessPseudoFrames(aState, nsLayoutAtoms::tableColGroupFrame); } } rv = aTableCreator.CreateTableColGroupFrame(&aNewFrame); if (NS_FAILED(rv)) return rv; InitAndRestoreFrame(aState, aContent, parentFrame, aStyleContext, nsnull, aNewFrame); if (!aIsPseudo) { nsFrameItems childItems; nsIFrame* captionFrame; rv = TableProcessChildren(aState, aContent, aNewFrame, aTableCreator, childItems, captionFrame); if (NS_FAILED(rv)) return rv; aNewFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); if (aIsPseudoParent) { aState.mPseudoFrames.mTableInner.mChildList.AddChild(aNewFrame); } } return rv; } nsresult nsCSSFrameConstructor::ConstructTableRowFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrameIn, nsStyleContext* aStyleContext, nsTableCreator& aTableCreator, PRBool aIsPseudo, nsFrameItems& aChildItems, nsIFrame*& aNewFrame, PRBool& aIsPseudoParent) { nsresult rv = NS_OK; if (!aParentFrameIn) return rv; nsIFrame* parentFrame = aParentFrameIn; aIsPseudoParent = PR_FALSE; if (!aIsPseudo) { // this frame may have a pseudo parent GetParentFrame(aTableCreator, *aParentFrameIn, nsLayoutAtoms::tableRowFrame, aState, parentFrame, aIsPseudoParent); if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aChildItems); } if (!aIsPseudo && aIsPseudoParent && aState.mPseudoFrames.mRow.mFrame) { ProcessPseudoFrames(aState, nsLayoutAtoms::tableRowFrame); } } rv = aTableCreator.CreateTableRowFrame(&aNewFrame); if (NS_FAILED(rv)) return rv; InitAndRestoreFrame(aState, aContent, parentFrame, aStyleContext, nsnull, aNewFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(aNewFrame, nsnull, PR_FALSE); if (!aIsPseudo) { nsFrameItems childItems; nsIFrame* captionFrame; rv = TableProcessChildren(aState, aContent, aNewFrame, aTableCreator, childItems, captionFrame); if (NS_FAILED(rv)) return rv; // if there are any anonymous children for the table, create frames for them CreateAnonymousFrames(nsnull, aState, aContent, aNewFrame, PR_FALSE, childItems); aNewFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); if (aIsPseudoParent) { aState.mPseudoFrames.mRowGroup.mChildList.AddChild(aNewFrame); } } return rv; } nsresult nsCSSFrameConstructor::ConstructTableColFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrameIn, nsStyleContext* aStyleContext, nsTableCreator& aTableCreator, PRBool aIsPseudo, nsFrameItems& aChildItems, nsIFrame*& aNewFrame, PRBool& aIsPseudoParent) { nsresult rv = NS_OK; if (!aParentFrameIn || !aStyleContext) return rv; nsIFrame* parentFrame = aParentFrameIn; aIsPseudoParent = PR_FALSE; if (!aIsPseudo) { // this frame may have a pseudo parent GetParentFrame(aTableCreator, *aParentFrameIn, nsLayoutAtoms::tableColFrame, aState, parentFrame, aIsPseudoParent); if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aChildItems); } } rv = aTableCreator.CreateTableColFrame(&aNewFrame); if (NS_FAILED(rv)) return rv; InitAndRestoreFrame(aState, aContent, parentFrame, aStyleContext, nsnull, aNewFrame); // if the parent frame was anonymous then reparent the style context if (aIsPseudoParent) { aState.mFrameManager->ReParentStyleContext(aNewFrame); } // construct additional col frames if the col frame has a span > 1 PRInt32 span = 1; nsCOMPtr cgContent(do_QueryInterface(aContent)); if (cgContent) { cgContent->GetSpan(&span); nsIFrame* lastCol = aNewFrame; nsStyleContext* styleContext = nsnull; for (PRInt32 spanX = 1; spanX < span; spanX++) { // The same content node should always resolve to the same style context. if (1 == spanX) styleContext = aNewFrame->GetStyleContext(); nsIFrame* newCol; rv = aTableCreator.CreateTableColFrame(&newCol); if (NS_FAILED(rv)) return rv; InitAndRestoreFrame(aState, aContent, parentFrame, styleContext, nsnull, newCol, PR_FALSE); ((nsTableColFrame*)newCol)->SetColType(eColAnonymousCol); lastCol->SetNextSibling(newCol); lastCol = newCol; } } if (!aIsPseudo && aIsPseudoParent) { aState.mPseudoFrames.mColGroup.mChildList.AddChild(aNewFrame); } return rv; } nsresult nsCSSFrameConstructor::ConstructTableCellFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrameIn, nsStyleContext* aStyleContext, nsTableCreator& aTableCreator, PRBool aIsPseudo, nsFrameItems& aChildItems, nsIFrame*& aNewCellOuterFrame, nsIFrame*& aNewCellInnerFrame, PRBool& aIsPseudoParent) { nsresult rv = NS_OK; if (!aParentFrameIn) return rv; nsIFrame* parentFrame = aParentFrameIn; aIsPseudoParent = PR_FALSE; if (!aIsPseudo) { // this frame may have a pseudo parent // use nsLayoutAtoms::tableCellFrame which will match if it is really nsLayoutAtoms::bcTableCellFrame GetParentFrame(aTableCreator, *aParentFrameIn, nsLayoutAtoms::tableCellFrame, aState, parentFrame, aIsPseudoParent); if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aChildItems); } if (!aIsPseudo && aIsPseudoParent && aState.mPseudoFrames.mCellOuter.mFrame) { ProcessPseudoFrames(aState, nsLayoutAtoms::tableCellFrame); } } rv = aTableCreator.CreateTableCellFrame(parentFrame, &aNewCellOuterFrame); if (NS_FAILED(rv)) return rv; // Initialize the table cell frame InitAndRestoreFrame(aState, aContent, parentFrame, aStyleContext, nsnull, aNewCellOuterFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(aNewCellOuterFrame, nsnull, PR_FALSE); // Create a block frame that will format the cell's content rv = aTableCreator.CreateTableCellInnerFrame(&aNewCellInnerFrame); if (NS_FAILED(rv)) { aNewCellOuterFrame->Destroy(aState.mPresContext); aNewCellOuterFrame = nsnull; return rv; } // Resolve pseudo style and initialize the body cell frame nsRefPtr innerPseudoStyle; innerPseudoStyle = mPresShell->StyleSet()-> ResolvePseudoStyleFor(aContent, nsCSSAnonBoxes::cellContent, aStyleContext); InitAndRestoreFrame(aState, aContent, aNewCellOuterFrame, innerPseudoStyle, nsnull, aNewCellInnerFrame); if (!aIsPseudo) { PRBool haveFirstLetterStyle, haveFirstLineStyle; HaveSpecialBlockStyle(aContent, aStyleContext, &haveFirstLetterStyle, &haveFirstLineStyle); // The block frame is a float container nsFrameConstructorSaveState floatSaveState; aState.PushFloatContainingBlock(aNewCellInnerFrame, floatSaveState, haveFirstLetterStyle, haveFirstLineStyle); // Process the child content nsFrameItems childItems; // pass in null tableCreator so ProcessChildren will not call TableProcessChildren rv = ProcessChildren(aState, aContent, aNewCellInnerFrame, PR_TRUE, childItems, PR_TRUE, nsnull); if (NS_FAILED(rv)) { // Clean up // XXXbz kids of this stuff need to be cleaned up too! aNewCellInnerFrame->Destroy(aState.mPresContext); aNewCellInnerFrame = nsnull; aNewCellOuterFrame->Destroy(aState.mPresContext); aNewCellOuterFrame = nsnull; return rv; } aNewCellInnerFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); aNewCellOuterFrame->SetInitialChildList(aState.mPresContext, nsnull, aNewCellInnerFrame); if (aIsPseudoParent) { aState.mPseudoFrames.mRow.mChildList.AddChild(aNewCellOuterFrame); } } return rv; } static PRBool MustGeneratePseudoParent(nsIContent* aContent, nsStyleContext* aStyleContext) { if (!aStyleContext || NS_STYLE_DISPLAY_NONE == aStyleContext->GetStyleDisplay()->mDisplay) { return PR_FALSE; } if (aContent->IsContentOfType(nsIContent::eTEXT)) { return !IsOnlyWhitespace(aContent); } return !aContent->IsContentOfType(nsIContent::eCOMMENT); } // this is called when a non table related element is a child of a table, row group, // or row, but not a cell. nsresult nsCSSFrameConstructor::ConstructTableForeignFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrameIn, nsStyleContext* aStyleContext, nsTableCreator& aTableCreator, nsFrameItems& aChildItems) { nsresult rv = NS_OK; if (!aParentFrameIn) return rv; nsIFrame* parentFrame = nsnull; PRBool hasPseudoParent = PR_FALSE; if (MustGeneratePseudoParent(aContent, aStyleContext)) { // this frame may have a pseudo parent, use block frame type to // trigger foreign rv = GetParentFrame(aTableCreator, *aParentFrameIn, nsLayoutAtoms::blockFrame, aState, parentFrame, hasPseudoParent); NS_ASSERTION(NS_SUCCEEDED(rv), "GetParentFrame failed!"); if (!hasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aChildItems); } } if (!parentFrame) return rv; // if pseudo frame wasn't created // there are two situations where table related frames will wrap around // foreign frames // a) inner table cell, which is a pseudo frame // b) caption frame which will be always a real frame. NS_ASSERTION(nsLayoutAtoms::tableCaptionFrame == parentFrame->GetType() || parentFrame == aState.mPseudoFrames.mCellInner.mFrame, "Weird parent in ConstructTableForeignFrame"); // Push the parent as the floater containing block nsFrameConstructorSaveState saveState; aState.PushFloatContainingBlock(parentFrame, saveState, PR_FALSE, PR_FALSE); // save the pseudo frame state now, as descendants of the child frame may require // other pseudo frame creations nsPseudoFrames prevPseudoFrames; aState.mPseudoFrames.Reset(&prevPseudoFrames); // Put the frames as kids of either the anonymous block (if we // created one), or just of our parent. nsFrameItems& childItems = hasPseudoParent ? prevPseudoFrames.mCellInner.mChildList : aChildItems; ConstructFrame(aState, aContent, parentFrame, childItems); // dont care about return value as ConstructFrame will not append a child if it fails. if (!aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, childItems); } // restore the pseudo frame state aState.mPseudoFrames = prevPseudoFrames; return rv; } static PRBool NeedFrameFor(nsIFrame* aParentFrame, nsIContent* aChildContent) { // don't create a whitespace frame if aParentFrame doesn't want it if ((NS_FRAME_EXCLUDE_IGNORABLE_WHITESPACE & aParentFrame->GetStateBits()) && IsOnlyWhitespace(aChildContent)) { return PR_FALSE; } return PR_TRUE; } nsresult nsCSSFrameConstructor::TableProcessChildren(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsTableCreator& aTableCreator, nsFrameItems& aChildItems, nsIFrame*& aCaption) { nsresult rv = NS_OK; if (!aContent || !aParentFrame) return rv; aCaption = nsnull; // save the incoming pseudo frame state nsPseudoFrames priorPseudoFrames; aState.mPseudoFrames.Reset(&priorPseudoFrames); nsIAtom* parentFrameType = aParentFrame->GetType(); nsStyleContext* parentStyleContext = aParentFrame->GetStyleContext(); ChildIterator iter, last; for (ChildIterator::Init(aContent, &iter, &last); iter != last; ++iter) { nsCOMPtr childContent = *iter; if (childContent && (childContent->IsContentOfType(nsIContent::eELEMENT) || childContent->IsContentOfType(nsIContent::eTEXT)) && NeedFrameFor(aParentFrame, childContent)) { rv = TableProcessChild(aState, childContent, aContent, aParentFrame, parentFrameType, parentStyleContext, aTableCreator, aChildItems, aCaption); } if (NS_FAILED(rv)) return rv; } // process the current pseudo frame state if (!aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aChildItems); } // restore the incoming pseudo frame state aState.mPseudoFrames = priorPseudoFrames; return rv; } nsresult nsCSSFrameConstructor::TableProcessChild(nsFrameConstructorState& aState, nsIContent* aChildContent, nsIContent* aParentContent, nsIFrame* aParentFrame, nsIAtom* aParentFrameType, nsStyleContext* aParentStyleContext, nsTableCreator& aTableCreator, nsFrameItems& aChildItems, nsIFrame*& aCaption) { nsresult rv = NS_OK; PRBool childIsCaption = PR_FALSE; PRBool isPseudoParent = PR_FALSE; nsIFrame* childFrame = nsnull; nsRefPtr childStyleContext; // Resolve the style context and get its display childStyleContext = ResolveStyleContext(aParentFrame, aChildContent); const nsStyleDisplay* childDisplay = childStyleContext->GetStyleDisplay(); if (nsLayoutAtoms::tableColGroupFrame == aParentFrameType && NS_STYLE_DISPLAY_TABLE_COLUMN != childDisplay->mDisplay) return rv; // construct only table columns below colgroups switch (childDisplay->mDisplay) { case NS_STYLE_DISPLAY_TABLE: { PRBool pageBreakAfter = PR_FALSE; if (aState.mPresContext->IsPaginated()) { // See if there is a page break before, if so construct one. Also see if there is one after pageBreakAfter = PageBreakBefore(aState, aChildContent, aParentFrame, childStyleContext, aChildItems); } // construct the table frame nsIFrame* innerTableFrame; rv = ConstructTableFrame(aState, aChildContent, aParentFrame, childStyleContext, aTableCreator, PR_FALSE, aChildItems, PR_TRUE, childFrame, innerTableFrame); if (NS_SUCCEEDED(rv) && pageBreakAfter) { // Construct the page break after ConstructPageBreakFrame(aState, aChildContent, aParentFrame, childStyleContext, aChildItems); } } // All done here return rv; case NS_STYLE_DISPLAY_TABLE_CAPTION: if (!aCaption) { // only allow one caption nsIFrame* parentFrame = AdjustCaptionParentFrame(aParentFrame); rv = ConstructTableCaptionFrame(aState, aChildContent, parentFrame, childStyleContext, aTableCreator, aChildItems, aCaption, isPseudoParent); } childIsCaption = PR_TRUE; break; case NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP: rv = ConstructTableColGroupFrame(aState, aChildContent, aParentFrame, childStyleContext, aTableCreator, PR_FALSE, aChildItems, childFrame, isPseudoParent); break; case NS_STYLE_DISPLAY_TABLE_HEADER_GROUP: case NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP: case NS_STYLE_DISPLAY_TABLE_ROW_GROUP: rv = ConstructTableRowGroupFrame(aState, aChildContent, aParentFrame, childStyleContext, aTableCreator, PR_FALSE, aChildItems, childFrame, isPseudoParent); break; case NS_STYLE_DISPLAY_TABLE_ROW: rv = ConstructTableRowFrame(aState, aChildContent, aParentFrame, childStyleContext, aTableCreator, PR_FALSE, aChildItems, childFrame, isPseudoParent); break; case NS_STYLE_DISPLAY_TABLE_COLUMN: rv = ConstructTableColFrame(aState, aChildContent, aParentFrame, childStyleContext, aTableCreator, PR_FALSE, aChildItems, childFrame, isPseudoParent); break; case NS_STYLE_DISPLAY_TABLE_CELL: nsIFrame* innerCell; rv = ConstructTableCellFrame(aState, aChildContent, aParentFrame, childStyleContext, aTableCreator, PR_FALSE, aChildItems, childFrame, innerCell, isPseudoParent); break; case NS_STYLE_DISPLAY_NONE: aState.mFrameManager->SetUndisplayedContent(aChildContent, childStyleContext); break; default: { // ConstructTableForeignFrame puts the frame in the right child list and // all that return ConstructTableForeignFrame(aState, aChildContent, aParentFrame, childStyleContext, aTableCreator, aChildItems); } } // for every table related frame except captions and ones with pseudo parents, // link into the child list if (childFrame && !childIsCaption && !isPseudoParent) { aChildItems.AddChild(childFrame); } return rv; } const nsStyleDisplay* nsCSSFrameConstructor::GetDisplay(nsIFrame* aFrame) { if (nsnull == aFrame) { return nsnull; } return aFrame->GetStyleContext()->GetStyleDisplay(); } /*********************************************** * END TABLE SECTION ***********************************************/ nsresult nsCSSFrameConstructor::ConstructDocElementTableFrame(nsIContent* aDocElement, nsIFrame* aParentFrame, nsIFrame** aNewTableFrame, nsFrameConstructorState& aState) { nsFrameItems frameItems; // XXXbz this is wrong. We should at least be setting the fixed container in // the framestate here. Better yet, we should pass through aState // unmodified. Can't do that, though, because then a fixed or absolute // positioned root table with auto offsets would look for a block to compute // its hypothetical box and crash. So we just disable fixed positioning // altogether in documents where the root is a table. Oh, well. nsFrameConstructorState state(mPresShell, nsnull, nsnull, nsnull, aState.mFrameState); ConstructFrame(state, aDocElement, aParentFrame, frameItems); *aNewTableFrame = frameItems.childList; if (!*aNewTableFrame) { NS_WARNING("cannot get table contentFrame"); // XXXbz maybe better to return the error from ConstructFrame? return NS_ERROR_FAILURE; } return NS_OK; } static PRBool CheckOverflow(nsPresContext* aPresContext, const nsStyleDisplay* aDisplay) { if (aDisplay->mOverflowX == NS_STYLE_OVERFLOW_VISIBLE) return PR_FALSE; if (aDisplay->mOverflowX == NS_STYLE_OVERFLOW_CLIP) aPresContext->SetViewportOverflowOverride(NS_STYLE_OVERFLOW_HIDDEN, NS_STYLE_OVERFLOW_HIDDEN); else aPresContext->SetViewportOverflowOverride(aDisplay->mOverflowX, aDisplay->mOverflowY); return PR_TRUE; } /** * This checks the root element and the HTML BODY, if any, for an "overflow" property * that should be applied to the viewport. If one is found then we return the * element that we took the overflow from (which should then be treated as * "overflow:visible"), and we store the overflow style in the prescontext. * @return if scroll was propagated from some content node, the content node it * was propagated from. */ nsIContent* nsCSSFrameConstructor::PropagateScrollToViewport() { // Set default nsPresContext* presContext = mPresShell->GetPresContext(); presContext->SetViewportOverflowOverride(NS_STYLE_OVERFLOW_AUTO, NS_STYLE_OVERFLOW_AUTO); // We never mess with the viewport scroll state // when printing or in print preview if (presContext->IsPaginated()) { return nsnull; } nsIContent* docElement = mDocument->GetRootContent(); // Check the style on the document root element nsStyleSet *styleSet = mPresShell->StyleSet(); nsRefPtr rootStyle; rootStyle = styleSet->ResolveStyleFor(docElement, nsnull); if (!rootStyle) { return nsnull; } if (CheckOverflow(presContext, rootStyle->GetStyleDisplay())) { // tell caller we stole the overflow style from the root element return docElement; } // Don't look in the BODY for non-HTML documents or HTML documents // with non-HTML roots // XXX this should be earlier; we shouldn't even look at the document root // for non-HTML documents. Fix this once we support explicit CSS styling // of the viewport // XXX what about XHTML? nsCOMPtr htmlDoc(do_QueryInterface(mDocument)); if (!htmlDoc || !docElement->IsContentOfType(nsIContent::eHTML)) { return nsnull; } nsCOMPtr body; htmlDoc->GetBody(getter_AddRefs(body)); nsCOMPtr bodyElement = do_QueryInterface(body); if (!bodyElement || !bodyElement->GetNodeInfo()->Equals(nsHTMLAtoms::body)) { // The body is not a tag, it's a . return nsnull; } nsRefPtr bodyStyle; bodyStyle = styleSet->ResolveStyleFor(bodyElement, rootStyle); if (!bodyStyle) { return nsnull; } if (CheckOverflow(presContext, bodyStyle->GetStyleDisplay())) { // tell caller we stole the overflow style from the body element return bodyElement; } return nsnull; } /** * New one */ nsresult nsCSSFrameConstructor::ConstructDocElementFrame(nsFrameConstructorState& aState, nsIContent* aDocElement, nsIFrame* aParentFrame, nsIFrame** aNewFrame) { // how the root frame hierarchy should look /* ---------------No Scrollbars------ AreaFrame or BoxFrame (InitialContainingBlock) ---------------Gfx Scrollbars ------ ScrollFrame ^ | | AreaFrame or BoxFrame (InitialContainingBlock) */ *aNewFrame = nsnull; if (!mTempFrameTreeState) aState.mPresShell->CaptureHistoryState(getter_AddRefs(mTempFrameTreeState)); // ----- reattach gfx scrollbars ------ // Gfx scrollframes were created in the root frame but the primary frame map may have been destroyed if a // new style sheet was loaded so lets reattach the frames to their content. // XXX this seems truly bogus, we wipe out mGfxScrollFrame below if (mGfxScrollFrame) { nsIFrame* gfxScrollbarFrame1 = mGfxScrollFrame->GetFirstChild(nsnull); if (gfxScrollbarFrame1) { // XXX This works, but why? aState.mFrameManager-> SetPrimaryFrameFor(gfxScrollbarFrame1->GetContent(), gfxScrollbarFrame1); nsIFrame* gfxScrollbarFrame2 = gfxScrollbarFrame1->GetNextSibling(); if (gfxScrollbarFrame2) { // XXX This works, but why? aState.mFrameManager-> SetPrimaryFrameFor(gfxScrollbarFrame2->GetContent(), gfxScrollbarFrame2); } } } // --------- CREATE AREA OR BOX FRAME ------- nsRefPtr styleContext; styleContext = mPresShell->StyleSet()->ResolveStyleFor(aDocElement, nsnull); const nsStyleDisplay* display = styleContext->GetStyleDisplay(); // Ensure that our XBL bindings are installed. if (display->mBinding) { // Get the XBL loader. nsresult rv; PRBool resolveStyle; nsIXBLService * xblService = GetXBLService(); if (!xblService) return NS_ERROR_FAILURE; nsRefPtr binding; rv = xblService->LoadBindings(aDocElement, display->mBinding, PR_FALSE, getter_AddRefs(binding), &resolveStyle); if (NS_FAILED(rv)) { if (rv != NS_ERROR_DOM_BAD_URI) { return NS_OK; // Binding will load asynchronously. } resolveStyle = PR_FALSE; } if (binding) { mDocument->BindingManager()->AddToAttachedQueue(binding); } if (resolveStyle) { styleContext = mPresShell->StyleSet()->ResolveStyleFor(aDocElement, nsnull); display = styleContext->GetStyleDisplay(); } } // --------- IF SCROLLABLE WRAP IN SCROLLFRAME -------- PRBool propagatedScrollToViewport = PropagateScrollToViewport() == aDocElement; // The document root should not be scrollable in any paginated context, // even in print preview. PRBool isScrollable = display->IsScrollableOverflow() && !aState.mPresContext->IsPaginated() && !propagatedScrollToViewport; nsIFrame* scrollFrame = nsnull; // build a scrollframe if (isScrollable) { nsRefPtr newContext; newContext = BeginBuildingScrollFrame( aState, aDocElement, styleContext, aParentFrame, nsnull, nsCSSAnonBoxes::scrolledContent, PR_FALSE, scrollFrame); styleContext = newContext; aParentFrame = scrollFrame; } nsIFrame* contentFrame = nsnull; PRBool isBlockFrame = PR_FALSE; nsresult rv; // The rules from CSS 2.1, section 9.2.4, have already been applied // by the style system, so we can assume that display->mDisplay is // either NONE, BLOCK, or TABLE. PRBool docElemIsTable = display->mDisplay == NS_STYLE_DISPLAY_TABLE; if (docElemIsTable) { // if the document is a table then just populate it. rv = ConstructDocElementTableFrame(aDocElement, aParentFrame, &contentFrame, aState); if (NS_FAILED(rv)) { return rv; } styleContext = contentFrame->GetStyleContext(); } else { // otherwise build a box or a block #ifdef MOZ_XUL if (aDocElement->IsContentOfType(nsIContent::eXUL)) { rv = NS_NewDocElementBoxFrame(mPresShell, &contentFrame); if (NS_FAILED(rv)) { return rv; } } else #endif #ifdef MOZ_SVG if (aDocElement->GetNameSpaceID() == kNameSpaceID_SVG && nsSVGUtils::SVGEnabled()) { rv = NS_NewSVGOuterSVGFrame(mPresShell, aDocElement, &contentFrame); if (NS_FAILED(rv)) { return rv; } } else #endif { rv = NS_NewDocumentElementFrame(mPresShell, &contentFrame); if (NS_FAILED(rv)) { return rv; } isBlockFrame = PR_TRUE; } // initialize the child InitAndRestoreFrame(aState, aDocElement, aParentFrame, styleContext, nsnull, contentFrame); } // set the primary frame aState.mFrameManager->SetPrimaryFrameFor(aDocElement, contentFrame); // Finish building the scrollframe if (isScrollable) { FinishBuildingScrollFrame(aParentFrame, contentFrame); // primary is set above (to the contentFrame) *aNewFrame = scrollFrame; } else { // if not scrollable the new frame is the content frame. *aNewFrame = contentFrame; } mInitialContainingBlock = contentFrame; mInitialContainingBlockIsAbsPosContainer = PR_FALSE; // if it was a table then we don't need to process our children. if (!docElemIsTable) { // Process the child content nsFrameConstructorSaveState absoluteSaveState; nsFrameConstructorSaveState floatSaveState; nsFrameItems childItems; if (isBlockFrame) { PRBool haveFirstLetterStyle, haveFirstLineStyle; HaveSpecialBlockStyle(aDocElement, styleContext, &haveFirstLetterStyle, &haveFirstLineStyle); mInitialContainingBlockIsAbsPosContainer = PR_TRUE; aState.PushAbsoluteContainingBlock(contentFrame, absoluteSaveState); aState.PushFloatContainingBlock(contentFrame, floatSaveState, haveFirstLetterStyle, haveFirstLineStyle); } // Create any anonymous frames the doc element frame requires // This must happen before ProcessChildren to ensure that popups are // never constructed before the popupset. CreateAnonymousFrames(nsnull, aState, aDocElement, contentFrame, PR_FALSE, childItems, PR_TRUE); ProcessChildren(aState, aDocElement, contentFrame, PR_TRUE, childItems, isBlockFrame); // Set the initial child lists contentFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); } return NS_OK; } nsresult nsCSSFrameConstructor::ConstructRootFrame(nsIContent* aDocElement, nsIFrame** aNewFrame) { NS_PRECONDITION(aNewFrame, "null out param"); // how the root frame hierarchy should look /* ---------------No Scrollbars------ ViewPortFrame (FixedContainingBlock) <---- RootView ^ | RootFrame(DocElementContainingBlock) ---------------Gfx Scrollbars ------ ViewPortFrame (FixedContainingBlock) <---- RootView ^ | ScrollFrame ^ | RootFrame(DocElementContainingBlock) */ // Set up our style rule observer. { nsCOMPtr ruleSupplier = do_QueryInterface(mDocument->BindingManager()); mPresShell->StyleSet()->SetStyleRuleSupplier(ruleSupplier); } // --------- BUILD VIEWPORT ----------- nsIFrame* viewportFrame = nsnull; nsRefPtr viewportPseudoStyle; nsStyleSet *styleSet = mPresShell->StyleSet(); viewportPseudoStyle = styleSet->ResolvePseudoStyleFor(nsnull, nsCSSAnonBoxes::viewport, nsnull); NS_NewViewportFrame(mPresShell, &viewportFrame); nsPresContext* presContext = mPresShell->GetPresContext(); // XXXbz do we _have_ to pass a null content pointer to that frame? // Would it really kill us to pass in the root element or something? // What would that break? viewportFrame->Init(presContext, nsnull, nsnull, viewportPseudoStyle, nsnull); // Bind the viewport frame to the root view nsIViewManager* viewManager = mPresShell->GetViewManager(); nsIView* rootView; viewManager->GetRootView(rootView); viewportFrame->SetView(rootView); nsContainerFrame::SyncFrameViewProperties(presContext, viewportFrame, viewportPseudoStyle, rootView); // The viewport is the containing block for 'fixed' elements mFixedContainingBlock = viewportFrame; // --------- CREATE ROOT FRAME ------- // Create the root frame. The document element's frame is a child of the // root frame. // // The root frame serves two purposes: // - reserves space for any margins needed for the document element's frame // - renders the document element's background. This ensures the background covers // the entire canvas as specified by the CSS2 spec PRBool isPaginated = presContext->IsPaginated(); PRBool isPrintPreview = presContext->Type() == nsPresContext::eContext_PrintPreview; nsIFrame* rootFrame = nsnull; nsIAtom* rootPseudo; if (!isPaginated) { #ifdef MOZ_XUL if (aDocElement->IsContentOfType(nsIContent::eXUL)) { NS_NewRootBoxFrame(mPresShell, &rootFrame); } else #endif { NS_NewCanvasFrame(mPresShell, &rootFrame); } rootPseudo = nsCSSAnonBoxes::canvas; mDocElementContainingBlock = rootFrame; } else { // Create a page sequence frame NS_NewSimplePageSequenceFrame(mPresShell, &rootFrame); mPageSequenceFrame = rootFrame; rootPseudo = nsCSSAnonBoxes::pageSequence; } // --------- IF SCROLLABLE WRAP IN SCROLLFRAME -------- // If the device supports scrolling (e.g., in galley mode on the screen and // for print-preview, but not when printing), then create a scroll frame that // will act as the scrolling mechanism for the viewport. // XXX Do we even need a viewport when printing to a printer? // As long as the webshell doesn't prohibit it, and the device supports // it, create a scroll frame that will act as the scolling mechanism for // the viewport. // // Threre are three possible values stored in the docshell: // 1) nsIScrollable::Scrollbar_Never = no scrollbars // 2) nsIScrollable::Scrollbar_Auto = scrollbars appear if needed // 3) nsIScrollable::Scrollbar_Always = scrollbars always // Only need to create a scroll frame/view for cases 2 and 3. PRBool isHTML = aDocElement->IsContentOfType(nsIContent::eHTML); PRBool isXUL = PR_FALSE; if (!isHTML) { isXUL = aDocElement->IsContentOfType(nsIContent::eXUL); } // Never create scrollbars for XUL documents PRBool isScrollable = !isXUL; // Never create scrollbars for frameset documents. if (isHTML) { nsCOMPtr htmlDoc = do_QueryInterface(mDocument); if (htmlDoc && htmlDoc->GetIsFrameset()) isScrollable = PR_FALSE; } if (isPaginated) { if (isPrintPreview) { isScrollable = presContext->HasPaginatedScrolling(); } else { isScrollable = PR_FALSE; // we are printing } } // We no longer need to do overflow propagation here. It's taken care of // when we construct frames for the element whose overflow might be // propagated NS_ASSERTION(!isScrollable || !isXUL, "XUL documents should never be scrollable - see above"); nsIFrame* newFrame = rootFrame; nsRefPtr rootPseudoStyle; // we must create a state because if the scrollbars are GFX it needs the // state to build the scrollbar frames. nsFrameConstructorState state(mPresShell, nsnull, nsnull, nsnull); nsIFrame* parentFrame = viewportFrame; // If paginated, make sure we don't put scrollbars in if (!isScrollable) { rootPseudoStyle = styleSet->ResolvePseudoStyleFor(nsnull, rootPseudo, viewportPseudoStyle); } else { if (rootPseudo == nsCSSAnonBoxes::canvas) { rootPseudo = nsCSSAnonBoxes::scrolledCanvas; } else { NS_ASSERTION(rootPseudo == nsCSSAnonBoxes::pageSequence, "Unknown root pseudo"); rootPseudo = nsCSSAnonBoxes::scrolledPageSequence; } // Build the frame. We give it the content we are wrapping which is the document, // the root frame, the parent view port frame, and we should get back the new // frame and the scrollable view if one was created. // resolve a context for the scrollframe nsRefPtr styleContext; styleContext = styleSet->ResolvePseudoStyleFor(nsnull, nsCSSAnonBoxes::viewportScroll, viewportPseudoStyle); // Note that the viewport scrollframe is always built with // overflow:auto style. This forces the scroll frame to create // anonymous content for both scrollbars. This is necessary even // if the HTML or BODY elements are overriding the viewport // scroll style to 'hidden' --- dynamic style changes might put // scrollbars back on the viewport and we don't want to have to // reframe the viewport to create the scrollbar content. newFrame = nsnull; rootPseudoStyle = BeginBuildingScrollFrame( state, aDocElement, styleContext, viewportFrame, nsnull, rootPseudo, PR_TRUE, newFrame); nsIScrollableFrame* scrollable; CallQueryInterface(newFrame, &scrollable); NS_ENSURE_TRUE(scrollable, NS_ERROR_FAILURE); nsIScrollableView* scrollableView = scrollable->GetScrollableView(); NS_ENSURE_TRUE(scrollableView, NS_ERROR_FAILURE); viewManager->SetRootScrollableView(scrollableView); parentFrame = newFrame; mGfxScrollFrame = newFrame; } rootFrame->Init(presContext, aDocElement, parentFrame, rootPseudoStyle, nsnull); if (isScrollable) { FinishBuildingScrollFrame(parentFrame, rootFrame); } if (isPaginated) { // paginated // Create the first page // Set the initial child lists nsIFrame *pageFrame, *pageContentFrame; ConstructPageFrame(mPresShell, presContext, rootFrame, nsnull, pageFrame, pageContentFrame); rootFrame->SetInitialChildList(presContext, nsnull, pageFrame); // The eventual parent of the document element frame. // XXX should this be set for every new page (in ConstructPageFrame)? mDocElementContainingBlock = pageContentFrame; } viewportFrame->SetInitialChildList(presContext, nsnull, newFrame); *aNewFrame = viewportFrame; return NS_OK; } nsresult nsCSSFrameConstructor::ConstructPageFrame(nsIPresShell* aPresShell, nsPresContext* aPresContext, nsIFrame* aParentFrame, nsIFrame* aPrevPageFrame, nsIFrame*& aPageFrame, nsIFrame*& aPageContentFrame) { nsresult rv = NS_OK; rv = NS_NewPageFrame(aPresShell, &aPageFrame); if (NS_FAILED(rv)) return rv; nsStyleContext* parentStyleContext = aParentFrame->GetStyleContext(); nsStyleSet *styleSet = aPresShell->StyleSet(); nsRefPtr pagePseudoStyle; pagePseudoStyle = styleSet->ResolvePseudoStyleFor(nsnull, nsCSSAnonBoxes::page, parentStyleContext); // Initialize the page frame and force it to have a view. This makes printing of // the pages easier and faster. aPageFrame->Init(aPresContext, nsnull, aParentFrame, pagePseudoStyle, aPrevPageFrame); // XXXbz should we be passing in a non-null aContentParentFrame? rv = nsHTMLContainerFrame::CreateViewForFrame(aPageFrame, nsnull, PR_TRUE); if (NS_FAILED(rv)) return NS_ERROR_NULL_POINTER; NS_NewPageContentFrame(aPresShell, &aPageContentFrame); nsRefPtr pageContentPseudoStyle; pageContentPseudoStyle = styleSet->ResolvePseudoStyleFor(nsnull, nsCSSAnonBoxes::pageContent, pagePseudoStyle); // Initialize the page content frame and force it to have a view. Also make it the // containing block for fixed elements which are repeated on every page. aPageContentFrame->Init(aPresContext, nsnull, aPageFrame, pageContentPseudoStyle, nsnull); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(aPageContentFrame, nsnull, PR_TRUE); if (NS_FAILED(rv)) return NS_ERROR_NULL_POINTER; mFixedContainingBlock = aPageContentFrame; aPageFrame->SetInitialChildList(aPresContext, nsnull, aPageContentFrame); // Fixed pos kids are taken care of directly in CreateContinuingFrame() return rv; } /* static */ nsresult nsCSSFrameConstructor::CreatePlaceholderFrameFor(nsIPresShell* aPresShell, nsPresContext* aPresContext, nsFrameManager* aFrameManager, nsIContent* aContent, nsIFrame* aFrame, nsStyleContext* aStyleContext, nsIFrame* aParentFrame, nsIFrame** aPlaceholderFrame) { nsPlaceholderFrame* placeholderFrame; nsresult rv = NS_NewPlaceholderFrame(aPresShell, (nsIFrame**)&placeholderFrame); if (NS_SUCCEEDED(rv)) { // The placeholder frame gets a pseudo style context nsRefPtr placeholderStyle; nsStyleContext* parentContext = aStyleContext->GetParent(); placeholderStyle = aPresShell->StyleSet()-> ResolveStyleForNonElement(parentContext); placeholderFrame->Init(aPresContext, aContent, aParentFrame, placeholderStyle, nsnull); // The placeholder frame has a pointer back to the out-of-flow frame placeholderFrame->SetOutOfFlowFrame(aFrame); aFrame->AddStateBits(NS_FRAME_OUT_OF_FLOW); // Add mapping from absolutely positioned frame to its placeholder frame aFrameManager->RegisterPlaceholderFrame(placeholderFrame); *aPlaceholderFrame = NS_STATIC_CAST(nsIFrame*, placeholderFrame); } return rv; } nsresult nsCSSFrameConstructor::ConstructRadioControlFrame(nsIFrame** aNewFrame, nsIContent* aContent, nsStyleContext* aStyleContext) { nsresult rv = NS_NewGfxRadioControlFrame(mPresShell, aNewFrame); if (NS_FAILED(rv)) { *aNewFrame = nsnull; return rv; } nsRefPtr radioStyle; radioStyle = mPresShell->StyleSet()->ResolvePseudoStyleFor(aContent, nsCSSAnonBoxes::radio, aStyleContext); nsIRadioControlFrame* radio = nsnull; if (*aNewFrame && NS_SUCCEEDED(CallQueryInterface(*aNewFrame, &radio))) { radio->SetRadioButtonFaceStyleContext(radioStyle); } return rv; } nsresult nsCSSFrameConstructor::ConstructCheckboxControlFrame(nsIFrame** aNewFrame, nsIContent* aContent, nsStyleContext* aStyleContext) { nsresult rv = NS_NewGfxCheckboxControlFrame(mPresShell, aNewFrame); if (NS_FAILED(rv)) { *aNewFrame = nsnull; return rv; } nsRefPtr checkboxStyle; checkboxStyle = mPresShell->StyleSet()->ResolvePseudoStyleFor(aContent, nsCSSAnonBoxes::check, aStyleContext); nsICheckboxControlFrame* checkbox = nsnull; if (*aNewFrame && NS_SUCCEEDED(CallQueryInterface(*aNewFrame, &checkbox))) { checkbox->SetCheckboxFaceStyleContext(checkboxStyle); } return rv; } nsresult nsCSSFrameConstructor::ConstructSelectFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsIAtom* aTag, nsStyleContext* aStyleContext, nsIFrame*& aNewFrame, const nsStyleDisplay* aStyleDisplay, PRBool& aFrameHasBeenInitialized, nsFrameItems& aFrameItems) { nsresult rv = NS_OK; const PRInt32 kNoSizeSpecified = -1; // Construct a frame-based listbox or combobox nsCOMPtr sel(do_QueryInterface(aContent)); PRInt32 size = 1; if (sel) { sel->GetSize(&size); PRBool multipleSelect = PR_FALSE; sel->GetMultiple(&multipleSelect); // Construct a combobox if size=1 or no size is specified and its multiple select if (((1 == size || 0 == size) || (kNoSizeSpecified == size)) && (PR_FALSE == multipleSelect)) { // Construct a frame-based combo box. // The frame-based combo box is built out of three parts. A display area, a button and // a dropdown list. The display area and button are created through anonymous content. // The drop-down list's frame is created explicitly. The combobox frame shares it's content // with the drop-down list. PRUint32 flags = NS_BLOCK_SHRINK_WRAP | NS_BLOCK_SPACE_MGR; nsIFrame * comboboxFrame; rv = NS_NewComboboxControlFrame(mPresShell, &comboboxFrame, flags); // Save the history state so we don't restore during construction // since the complete tree is required before we restore. nsILayoutHistoryState *historyState = aState.mFrameState; aState.mFrameState = nsnull; // Initialize the combobox frame InitAndRestoreFrame(aState, aContent, aState.GetGeometricParent(aStyleDisplay, aParentFrame), aStyleContext, nsnull, comboboxFrame); nsHTMLContainerFrame::CreateViewForFrame(comboboxFrame, aParentFrame, PR_FALSE); rv = aState.AddChild(comboboxFrame, aFrameItems, aStyleDisplay, aContent, aStyleContext, aParentFrame); if (NS_FAILED(rv)) { return rv; } /////////////////////////////////////////////////////////////////// // Combobox - Old Native Implementation /////////////////////////////////////////////////////////////////// nsIComboboxControlFrame* comboBox = nsnull; CallQueryInterface(comboboxFrame, &comboBox); NS_ASSERTION(comboBox, "NS_NewComboboxControlFrame returned frame that " "doesn't implement nsIComboboxControlFrame"); // Create a listbox nsIFrame * listFrame; rv = NS_NewListControlFrame(mPresShell, &listFrame); // Notify the listbox that it is being used as a dropdown list. nsIListControlFrame * listControlFrame; rv = CallQueryInterface(listFrame, &listControlFrame); if (NS_SUCCEEDED(rv)) { listControlFrame->SetComboboxFrame(comboboxFrame); } // Notify combobox that it should use the listbox as it's popup comboBox->SetDropDown(listFrame); // Resolve pseudo element style for the dropdown list nsRefPtr listStyle; listStyle = mPresShell->StyleSet()->ResolvePseudoStyleFor(aContent, nsCSSAnonBoxes::dropDownList, aStyleContext); NS_ASSERTION(!listStyle->GetStyleDisplay()->IsPositioned(), "Ended up with positioned dropdown list somehow."); NS_ASSERTION(!listStyle->GetStyleDisplay()->IsFloating(), "Ended up with floating dropdown list somehow."); // Initialize the scroll frame positioned. Note that it is NOT // initialized as absolutely positioned. nsIFrame* newFrame = nsnull; nsIFrame* scrolledFrame = nsnull; NS_NewSelectsAreaFrame(mPresShell, &scrolledFrame, flags); // make sure any existing anonymous content is cleared out. Gfx scroll frame construction // should reset it to just be the anonymous scrollbars, but we don't want to depend // on that. mPresShell->SetAnonymousContentFor(aContent, nsnull); InitializeSelectFrame(aState, listFrame, scrolledFrame, aContent, comboboxFrame, listStyle, PR_TRUE, aFrameItems); newFrame = listFrame; // Set flag so the events go to the listFrame not child frames. // XXX: We should replace this with a real widget manager similar // to how the nsFormControlFrame works. Re-directing events is a temporary Kludge. NS_ASSERTION(listFrame->GetView(), "ListFrame's view is nsnull"); //listFrame->GetView()->SetViewFlags(NS_VIEW_PUBLIC_FLAG_DONT_CHECK_CHILDREN); // Create display and button frames from the combobox's anonymous content. // The anonymous content is appended to existing anonymous content for this // element (the scrollbars). nsFrameItems childItems; CreateAnonymousFrames(nsHTMLAtoms::combobox, aState, aContent, comboboxFrame, PR_TRUE, childItems); comboboxFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); // Initialize the additional popup child list which contains the // dropdown list frame. nsFrameItems popupItems; popupItems.AddChild(listFrame); comboboxFrame->SetInitialChildList(aState.mPresContext, nsLayoutAtoms::popupList, popupItems.childList); aNewFrame = comboboxFrame; aFrameHasBeenInitialized = PR_TRUE; aState.mFrameState = historyState; if (aState.mFrameState && aState.mFrameManager) { // Restore frame state for the entire subtree of |comboboxFrame|. aState.mFrameManager->RestoreFrameState(comboboxFrame, aState.mFrameState); } } else { /////////////////////////////////////////////////////////////////// // ListBox - Old Native Implementation /////////////////////////////////////////////////////////////////// nsIFrame * listFrame; rv = NS_NewListControlFrame(mPresShell, &listFrame); PRUint32 flags = NS_BLOCK_SHRINK_WRAP | NS_BLOCK_SPACE_MGR; nsIFrame* scrolledFrame = nsnull; NS_NewSelectsAreaFrame(mPresShell, &scrolledFrame, flags); // ******* this code stolen from Initialze ScrollFrame ******** // please adjust this code to use BuildScrollFrame. InitializeSelectFrame(aState, listFrame, scrolledFrame, aContent, aParentFrame, aStyleContext, PR_FALSE, aFrameItems); aNewFrame = listFrame; aFrameHasBeenInitialized = PR_TRUE; } } return rv; } /** * Used to be InitializeScrollFrame but now its only used for the select tag * But the select tag should really be fixed to use GFX scrollbars that can * be create with BuildScrollFrame. */ nsresult nsCSSFrameConstructor::InitializeSelectFrame(nsFrameConstructorState& aState, nsIFrame* scrollFrame, nsIFrame* scrolledFrame, nsIContent* aContent, nsIFrame* aParentFrame, nsStyleContext* aStyleContext, PRBool aBuildCombobox, nsFrameItems& aFrameItems) { const nsStyleDisplay* display = aStyleContext->GetStyleDisplay(); // Initialize it nsIFrame* geometricParent = aState.GetGeometricParent(display, aParentFrame); // We don't call InitAndRestoreFrame for scrollFrame because we can only // restore the frame state after its parts have been created (in particular, // the scrollable view). So we have to split Init and Restore. // Initialize the frame scrollFrame->Init(aState.mPresContext, aContent, geometricParent, aStyleContext, nsnull); if (!aBuildCombobox) { nsresult rv = aState.AddChild(scrollFrame, aFrameItems, display, aContent, aStyleContext, aParentFrame); if (NS_FAILED(rv)) { return rv; } } nsHTMLContainerFrame::CreateViewForFrame(scrollFrame, aParentFrame, aBuildCombobox); if (aBuildCombobox) { // Give the drop-down list a popup widget nsIView* view = scrollFrame->GetView(); NS_ASSERTION(view, "We asked for a view but didn't get one"); if (view) { view->GetViewManager()->SetViewFloating(view, PR_TRUE); nsWidgetInitData widgetData; widgetData.mWindowType = eWindowType_popup; widgetData.mBorderStyle = eBorderStyle_default; #ifdef XP_MACOSX static NS_DEFINE_IID(kCPopUpCID, NS_POPUP_CID); view->CreateWidget(kCPopUpCID, &widgetData, nsnull); #else static NS_DEFINE_IID(kCChildCID, NS_CHILD_CID); view->CreateWidget(kCChildCID, &widgetData, nsnull); #endif } } nsStyleContext* scrolledPseudoStyle; BuildScrollFrame(aState, aContent, aStyleContext, scrolledFrame, geometricParent, aParentFrame, scrollFrame, scrolledPseudoStyle); if (aState.mFrameState && aState.mFrameManager) { // Restore frame state for the scroll frame aState.mFrameManager->RestoreFrameStateFor(scrollFrame, aState.mFrameState); } // The area frame is a float container PRBool haveFirstLetterStyle, haveFirstLineStyle; HaveSpecialBlockStyle(aContent, aStyleContext, &haveFirstLetterStyle, &haveFirstLineStyle); nsFrameConstructorSaveState floatSaveState; aState.PushFloatContainingBlock(scrolledFrame, floatSaveState, haveFirstLetterStyle, haveFirstLineStyle); // Process children nsFrameConstructorSaveState absoluteSaveState; nsFrameItems childItems; if (display->IsPositioned()) { // The area frame becomes a container for child frames that are // absolutely positioned aState.PushAbsoluteContainingBlock(scrolledFrame, absoluteSaveState); } ProcessChildren(aState, aContent, scrolledFrame, PR_FALSE, childItems, PR_TRUE); // if a select is being created with zero options we need to create // a special pseudo frame so it can be sized as best it can nsCOMPtr selectElement(do_QueryInterface(aContent)); if (selectElement) { AddDummyFrameToSelect(aState, scrollFrame, scrolledFrame, &childItems, aContent, selectElement); } ////////////////////////////////////////////////// ////////////////////////////////////////////////// // Set the scrolled frame's initial child lists scrolledFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); return NS_OK; } nsresult nsCSSFrameConstructor::ConstructFieldSetFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsIAtom* aTag, nsStyleContext* aStyleContext, nsIFrame*& aNewFrame, nsFrameItems& aFrameItems, const nsStyleDisplay* aStyleDisplay, PRBool& aFrameHasBeenInitialized) { nsIFrame * newFrame; nsresult rv = NS_NewFieldSetFrame(mPresShell, &newFrame, NS_BLOCK_SPACE_MGR); if (NS_FAILED(rv)) { return rv; } // Initialize it InitAndRestoreFrame(aState, aContent, aState.GetGeometricParent(aStyleDisplay, aParentFrame), aStyleContext, nsnull, newFrame); // See if we need to create a view, e.g. the frame is absolutely // positioned nsHTMLContainerFrame::CreateViewForFrame(newFrame, aParentFrame, PR_FALSE); nsIFrame* areaFrame; NS_NewAreaFrame(mPresShell, &areaFrame, NS_BLOCK_SPACE_MGR | NS_BLOCK_SHRINK_WRAP | NS_BLOCK_MARGIN_ROOT); // Resolve style and initialize the frame nsRefPtr styleContext; styleContext = mPresShell->StyleSet()->ResolvePseudoStyleFor(aContent, nsCSSAnonBoxes::fieldsetContent, aStyleContext); InitAndRestoreFrame(aState, aContent, newFrame, styleContext, nsnull, areaFrame); rv = aState.AddChild(newFrame, aFrameItems, aStyleDisplay, aContent, aStyleContext, aParentFrame); if (NS_FAILED(rv)) { return rv; } // The area frame is a float container PRBool haveFirstLetterStyle, haveFirstLineStyle; HaveSpecialBlockStyle(aContent, aStyleContext, &haveFirstLetterStyle, &haveFirstLineStyle); nsFrameConstructorSaveState floatSaveState; aState.PushFloatContainingBlock(areaFrame, floatSaveState, haveFirstLetterStyle, haveFirstLineStyle); // Process children nsFrameConstructorSaveState absoluteSaveState; nsFrameItems childItems; if (aStyleDisplay->IsPositioned()) { // The area frame becomes a container for child frames that are // absolutely positioned aState.PushAbsoluteContainingBlock(areaFrame, absoluteSaveState); } ProcessChildren(aState, aContent, areaFrame, PR_FALSE, childItems, PR_TRUE); static NS_DEFINE_IID(kLegendFrameCID, NS_LEGEND_FRAME_CID); nsIFrame * child = childItems.childList; nsIFrame * previous = nsnull; nsIFrame* legendFrame = nsnull; while (nsnull != child) { nsresult result = child->QueryInterface(kLegendFrameCID, (void**)&legendFrame); if (NS_SUCCEEDED(result) && legendFrame) { // We want the legend to be the first frame in the fieldset child list. // That way the EventStateManager will do the right thing when tabbing // from a selection point within the legend (bug 236071), which is // used for implementing legend access keys (bug 81481). // GetAdjustedParentFrame() below depends on this frame order. if (nsnull != previous) { previous->SetNextSibling(legendFrame->GetNextSibling()); } else { childItems.childList = legendFrame->GetNextSibling(); } legendFrame->SetNextSibling(areaFrame); legendFrame->SetParent(newFrame); break; } previous = child; child = child->GetNextSibling(); } // Set the scrolled frame's initial child lists areaFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); // Set the scroll frame's initial child list newFrame->SetInitialChildList(aState.mPresContext, nsnull, legendFrame ? legendFrame : areaFrame); // our new frame retured is the top frame which is the list frame. aNewFrame = newFrame; // yes we have already initialized our frame aFrameHasBeenInitialized = PR_TRUE; return NS_OK; } nsresult nsCSSFrameConstructor::ConstructTextFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsStyleContext* aStyleContext, nsFrameItems& aFrameItems, PRBool aPseudoParent) { // process pending pseudo frames. whitespace doesn't have an effect. if (!aPseudoParent && !aState.mPseudoFrames.IsEmpty() && !IsOnlyWhitespace(aContent)) ProcessPseudoFrames(aState, aFrameItems); nsIFrame* newFrame = nsnull; #ifdef MOZ_SVG nsresult rv; if (aParentFrame->IsFrameOfType(nsIFrame::eSVG)) { nsCOMPtr svg_parent = do_QueryInterface(aParentFrame); if (!svg_parent) { return NS_OK; } rv = NS_NewSVGGlyphFrame(mPresShell, aContent, aParentFrame, &newFrame); } else rv = NS_NewTextFrame(mPresShell, &newFrame); #else nsresult rv = NS_NewTextFrame(mPresShell, &newFrame); #endif if (NS_FAILED(rv) || !newFrame) return rv; // Set the frame state bit for text frames to mark them as replaced. // XXX kipp: temporary newFrame->AddStateBits(NS_FRAME_REPLACED_ELEMENT); rv = InitAndRestoreFrame(aState, aContent, aParentFrame, aStyleContext, nsnull, newFrame); if (NS_FAILED(rv)) { newFrame->Destroy(aState.mPresContext); return rv; } // We never need to create a view for a text frame. // Set the frame's initial child list to null. newFrame->SetInitialChildList(aState.mPresContext, nsnull, nsnull); // Add the newly constructed frame to the flow aFrameItems.AddChild(newFrame); // Text frames don't go in the content->frame hash table, because // they're anonymous. This keeps the hash table smaller return rv; } nsresult nsCSSFrameConstructor::ConstructHTMLFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsIAtom* aTag, PRInt32 aNameSpaceID, nsStyleContext* aStyleContext, nsFrameItems& aFrameItems, PRBool aHasPseudoParent) { // Ignore the tag if it's not HTML content and if it doesn't extend (via XBL) // a valid HTML namespace. if (!aContent->IsContentOfType(nsIContent::eHTML) && aNameSpaceID != kNameSpaceID_XHTML) { return NS_OK; } PRBool frameHasBeenInitialized = PR_FALSE; nsIFrame* newFrame = nsnull; // the frame we construct PRBool isReplaced = PR_FALSE; PRBool addToHashTable = PR_TRUE; PRBool isFloatContainer = PR_FALSE; PRBool addedToFrameList = PR_FALSE; nsresult rv = NS_OK; // See if the element is absolute or fixed positioned const nsStyleDisplay* display = aStyleContext->GetStyleDisplay(); // Create a frame based on the tag if (nsHTMLAtoms::img == aTag) { isReplaced = PR_TRUE; if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } // XXX If image display is turned off, then use ConstructAlternateFrame() // instead... rv = NS_NewImageFrame(mPresShell, &newFrame); } else if (nsHTMLAtoms::br == aTag) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } rv = NS_NewBRFrame(mPresShell, &newFrame); isReplaced = PR_TRUE; // BR frames don't go in the content->frame hash table: typically // there are many BR content objects and this would increase the size // of the hash table, and it's doubtful we need the mapping anyway addToHashTable = PR_FALSE; } else if (nsHTMLAtoms::wbr == aTag) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } rv = NS_NewWBRFrame(mPresShell, &newFrame); } else if (nsHTMLAtoms::input == aTag) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } isReplaced = PR_TRUE; rv = CreateInputFrame(aContent, &newFrame, aStyleContext); } else if (nsHTMLAtoms::textarea == aTag) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } isReplaced = PR_TRUE; rv = NS_NewTextControlFrame(mPresShell, &newFrame); } else if (nsHTMLAtoms::select == aTag) { if (!gUseXBLForms) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } isReplaced = PR_TRUE; rv = ConstructSelectFrame(aState, aContent, aParentFrame, aTag, aStyleContext, newFrame, display, frameHasBeenInitialized, aFrameItems); NS_ASSERTION(nsPlaceholderFrame::GetRealFrameFor(aFrameItems.lastChild) == newFrame, "Frame didn't get added to aFrameItems?"); addedToFrameList = PR_TRUE; } } else if (nsHTMLAtoms::object == aTag || nsHTMLAtoms::applet == aTag || nsHTMLAtoms::embed == aTag) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } isReplaced = PR_TRUE; rv = NS_NewObjectFrame(mPresShell, &newFrame); } else if (nsHTMLAtoms::fieldset == aTag) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } rv = ConstructFieldSetFrame(aState, aContent, aParentFrame, aTag, aStyleContext, newFrame, aFrameItems, display, frameHasBeenInitialized); NS_ASSERTION(nsPlaceholderFrame::GetRealFrameFor(aFrameItems.lastChild) == newFrame, "Frame didn't get added to aFrameItems?"); addedToFrameList = PR_TRUE; } else if (nsHTMLAtoms::legend == aTag) { NS_ASSERTION(!display->IsAbsolutelyPositioned() && !display->IsFloating(), "Legends should not be positioned and should not float"); if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } rv = NS_NewLegendFrame(mPresShell, &newFrame); isFloatContainer = PR_TRUE; } else if (nsHTMLAtoms::frameset == aTag) { NS_ASSERTION(!display->IsAbsolutelyPositioned() && !display->IsFloating(), "Framesets should not be positioned and should not float"); if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } rv = NS_NewHTMLFramesetFrame(mPresShell, &newFrame); } else if (nsHTMLAtoms::iframe == aTag) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } isReplaced = PR_TRUE; rv = NS_NewSubDocumentFrame(mPresShell, &newFrame); if (newFrame) { // the nsSubDocumentFrame needs to know about its content parent during ::Init. // there is no reasonable way to get the value there. // so we store it as a frame property. nsCOMPtr contentParentAtom = do_GetAtom("contentParent"); aState.mPresContext->PropertyTable()-> SetProperty(newFrame, contentParentAtom, aParentFrame, nsnull, nsnull); } } else if (nsHTMLAtoms::spacer == aTag) { NS_ASSERTION(!display->IsAbsolutelyPositioned() && !display->IsFloating(), "Spacers should not be positioned and should not float"); if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } rv = NS_NewSpacerFrame(mPresShell, &newFrame); } else if (nsHTMLAtoms::button == aTag) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } rv = NS_NewHTMLButtonControlFrame(mPresShell, &newFrame); // the html4 button needs to act just like a // regular button except contain html content // so it must be replaced or html outside it will // draw into its borders. -EDV isReplaced = PR_TRUE; isFloatContainer = PR_TRUE; } else if (nsHTMLAtoms::isindex == aTag) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } isReplaced = PR_TRUE; rv = NS_NewIsIndexFrame(mPresShell, &newFrame); } else if (nsHTMLAtoms::canvas == aTag) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } isReplaced = PR_TRUE; rv = NS_NewHTMLCanvasFrame(mPresShell, &newFrame); } if (NS_FAILED(rv) || !newFrame) return rv; // If we succeeded in creating a frame then initialize it, process its // children (if requested), and set the initial child list // If the frame is a replaced element, then set the frame state bit if (isReplaced) { newFrame->AddStateBits(NS_FRAME_REPLACED_ELEMENT); } // Note: at this point we should construct kids for newFrame only if // it's not a leaf and hasn't been initialized yet. if (!frameHasBeenInitialized) { NS_ASSERTION(!addedToFrameList, "Frames that were already added to the frame list should be " "initialized by now!"); nsIFrame* geometricParent = aState.GetGeometricParent(display, aParentFrame); rv = InitAndRestoreFrame(aState, aContent, geometricParent, aStyleContext, nsnull, newFrame); if (rv == NS_ERROR_FRAME_REPLACED) { // The frame called CantRenderReplacedElement from inside Init(). That // failed to do anything useful, since the frame was not in the frame // tree yet... Create an alternate frame ourselves newFrame->Destroy(aState.mPresContext); if (aTag != nsHTMLAtoms::img && aTag != nsHTMLAtoms::input) { // XXXbz This should really be made to work for too... return NS_OK; } // Try to construct the alternate frame newFrame = nsnull; rv = ConstructAlternateFrame(aContent, aStyleContext, geometricParent, aParentFrame, newFrame); NS_ENSURE_SUCCESS(rv, rv); NS_ASSERTION(newFrame, "ConstructAlternateFrame needs better error-checking"); } else { NS_ASSERTION(NS_SUCCEEDED(rv), "InitAndRestoreFrame failed"); // See if we need to create a view, e.g. the frame is absolutely // positioned nsHTMLContainerFrame::CreateViewForFrame(newFrame, aParentFrame, PR_FALSE); rv = aState.AddChild(newFrame, aFrameItems, display, aContent, aStyleContext, aParentFrame); if (NS_FAILED(rv)) { return rv; } addedToFrameList = PR_TRUE; // Process the child content if requested nsFrameItems childItems; nsFrameConstructorSaveState absoluteSaveState; nsFrameConstructorSaveState floatSaveState; if (!newFrame->IsLeaf()) { if (display->IsPositioned()) { aState.PushAbsoluteContainingBlock(newFrame, absoluteSaveState); } if (isFloatContainer) { PRBool haveFirstLetterStyle, haveFirstLineStyle; HaveSpecialBlockStyle(aContent, aStyleContext, &haveFirstLetterStyle, &haveFirstLineStyle); aState.PushFloatContainingBlock(newFrame, floatSaveState, PR_FALSE, PR_FALSE); } // Process the child frames rv = ProcessChildren(aState, aContent, newFrame, PR_TRUE, childItems, PR_FALSE); } // if there are any anonymous children create frames for them CreateAnonymousFrames(aTag, aState, aContent, newFrame, PR_FALSE, childItems); // Set the frame's initial child list if (childItems.childList) { newFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); } } } if (!addedToFrameList) { // Gotta do it here. Note that things like absolutely positioned replaced // elements and the like will end up in this code. So use the AddChild // on the state. rv = aState.AddChild(newFrame, aFrameItems, display, aContent, aStyleContext, aParentFrame); if (NS_FAILED(rv)) { return rv; } } if (newFrame && !newFrame->IsLeaf()) { rv = CreateInsertionPointChildren(aState, newFrame, aContent); NS_ENSURE_SUCCESS(rv, rv); } if (addToHashTable) { // Add a mapping from content object to primary frame. Note that for // floated and positioned frames this is the out-of-flow frame and not // the placeholder frame aState.mFrameManager->SetPrimaryFrameFor(aContent, newFrame); } return rv; } nsresult nsCSSFrameConstructor::CreateAnonymousFrames(nsIAtom* aTag, nsFrameConstructorState& aState, nsIContent* aParent, nsIFrame* aNewFrame, PRBool aAppendToExisting, nsFrameItems& aChildItems, PRBool aIsRoot) { // See if we might have anonymous content // by looking at the tag rather than doing a QueryInterface on // the frame. Only these tags' frames can have anonymous content // through nsIAnonymousContentCreator. We do this check for // performance reasons. If we did a QueryInterface on every tag it // would be inefficient. // nsGenericElement::SetDocument ought to keep a list like this one, // but it can't because scroll frames get around this. if (!aIsRoot && aTag != nsHTMLAtoms::input && aTag != nsHTMLAtoms::textarea && aTag != nsHTMLAtoms::combobox && aTag != nsHTMLAtoms::isindex && aTag != nsXULAtoms::scrollbar #ifdef MOZ_SVG && aTag != nsSVGAtoms::use #endif ) return NS_OK; return CreateAnonymousFrames(aState, aParent, mDocument, aNewFrame, PR_FALSE, aAppendToExisting, aChildItems, nsnull, nsnull, PR_FALSE); } // after the node has been constructed and initialized create any // anonymous content a node needs. nsresult nsCSSFrameConstructor::CreateAnonymousFrames(nsFrameConstructorState& aState, nsIContent* aParent, nsIDocument* aDocument, nsIFrame* aParentFrame, PRBool aForceBindingParent, PRBool aAppendToExisting, nsFrameItems& aChildItems, nsIFrame* aAnonymousCreator, nsIContent* aInsertionNode, PRBool aAnonymousParentIsBlock) { nsCOMPtr creator(do_QueryInterface(aParentFrame)); if (!creator) return NS_OK; nsFrameConstructorInsertionState saveState; aState.PushAnonymousContentCreator(aAnonymousCreator, aInsertionNode, aAnonymousParentIsBlock, saveState); nsCOMPtr anonymousItems; NS_NewISupportsArray(getter_AddRefs(anonymousItems)); creator->CreateAnonymousContent(aState.mPresContext, *anonymousItems); PRUint32 count = 0; anonymousItems->Count(&count); if (count) { // save the incoming pseudo frame state, so that we don't end up // with those pseudoframes in aChildItems nsPseudoFrames priorPseudoFrames; aState.mPseudoFrames.Reset(&priorPseudoFrames); // A content element can have multiple sources of anonymous content. For example, // SELECTs have a combobox dropdown button and also scrollbars in the list view. // nsPresShell doesn't handle this very well. It's a problem because a reframe could // cause anonymous content from one source to be destroyed and recreated while // (in theory) leaving the rest intact, but the presshell doesn't have a way of tracking // the anonymous content at that granularity. // So what we're doing right now is wiping out existing content whenever we get new // anonymous content, except for the one case we care about where there are multiple // sources (SELECTs). This case is handled by having SELECT initialization tell us // explicitly not to wipe out the scrollbars when the combobox anonymous content is // added. // Note that we only wipe out existing content when there is actual new content. // Otherwise we wipe out scrollbars and other anonymous content when we check sources // that never provide anonymous content (e.g. the call to CreateAnonymousFrames // from ConstructBlock). // What we SHOULD do is get rid of the presshell's need to track anonymous // content. It's only used for cleanup as far as I can tell. if (!aAppendToExisting) { mPresShell->SetAnonymousContentFor(aParent, nsnull); } // Inform the pres shell about the anonymous content mPresShell->SetAnonymousContentFor(aParent, anonymousItems); for (PRUint32 i=0; i < count; i++) { // get our child's content and set its parent to our content nsCOMPtr content; if (NS_FAILED(anonymousItems->QueryElementAt(i, NS_GET_IID(nsIContent), getter_AddRefs(content)))) continue; content->SetNativeAnonymous(PR_TRUE); nsresult rv; nsIContent* bindingParent = content; #ifdef MOZ_XUL // Only cut XUL scrollbars off if they're not in a XUL document. // This allows scrollbars to be styled from XUL (although not // from XML or HTML). nsINodeInfo *ni = content->GetNodeInfo(); if (ni && (ni->Equals(nsXULAtoms::scrollbar, kNameSpaceID_XUL) || ni->Equals(nsXULAtoms::scrollcorner, kNameSpaceID_XUL))) { nsCOMPtr xulDoc(do_QueryInterface(aDocument)); if (xulDoc) bindingParent = aParent; } else #endif #ifdef MOZ_XTF if (aForceBindingParent) bindingParent = aParent; else #endif #ifdef MOZ_SVG // least-surprise CSS binding until we do the SVG specified // cascading rules for - bug 265894 if (aParent && aParent->GetNodeInfo() && aParent->GetNodeInfo()->Equals(nsSVGAtoms::use, kNameSpaceID_SVG)) bindingParent = aParent; else #endif // Empty block to serve as the else clause to keep the // following statement from accidentally falling into the // |else| when the #defines are changed. {} rv = content->BindToTree(aDocument, aParent, bindingParent, PR_TRUE); if (NS_FAILED(rv)) { content->UnbindFromTree(); return rv; } nsIFrame * newFrame = nsnull; rv = creator->CreateFrameFor(aState.mPresContext, content, &newFrame); if (NS_SUCCEEDED(rv) && newFrame != nsnull) { aChildItems.AddChild(newFrame); } else { // create the frame and attach it to our frame ConstructFrame(aState, content, aParentFrame, aChildItems); } creator->PostCreateFrames(); } // process the current pseudo frame state if (!aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aChildItems); } // restore the incoming pseudo frame state aState.mPseudoFrames = priorPseudoFrames; } return NS_OK; } static PRBool IsXULDisplayType(const nsStyleDisplay* aDisplay) { return (aDisplay->mDisplay == NS_STYLE_DISPLAY_INLINE_BOX || aDisplay->mDisplay == NS_STYLE_DISPLAY_INLINE_GRID || aDisplay->mDisplay == NS_STYLE_DISPLAY_INLINE_STACK || aDisplay->mDisplay == NS_STYLE_DISPLAY_BOX || aDisplay->mDisplay == NS_STYLE_DISPLAY_GRID || aDisplay->mDisplay == NS_STYLE_DISPLAY_STACK || aDisplay->mDisplay == NS_STYLE_DISPLAY_GRID_GROUP || aDisplay->mDisplay == NS_STYLE_DISPLAY_GRID_LINE || aDisplay->mDisplay == NS_STYLE_DISPLAY_DECK || aDisplay->mDisplay == NS_STYLE_DISPLAY_POPUP || aDisplay->mDisplay == NS_STYLE_DISPLAY_GROUPBOX ); } nsresult nsCSSFrameConstructor::ConstructXULFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsIAtom* aTag, PRInt32 aNameSpaceID, nsStyleContext* aStyleContext, nsFrameItems& aFrameItems, PRBool aXBLBaseTag, PRBool aHasPseudoParent, PRBool* aHaltProcessing) { *aHaltProcessing = PR_FALSE; PRBool primaryFrameSet = PR_FALSE; nsresult rv = NS_OK; PRBool isPopup = PR_FALSE; PRBool isReplaced = PR_FALSE; PRBool frameHasBeenInitialized = PR_FALSE; // XXXbz somewhere here we should process pseudo frames if !aHasPseudoParent // this is the new frame that will be created nsIFrame* newFrame = nsnull; // this is the also the new frame that is created. But if a scroll frame is needed // the content will be mapped to the scrollframe and topFrame will point to it. // newFrame will still point to the child that we created like a "div" for example. nsIFrame* topFrame = nsnull; // Store aParentFrame away, since we plan to stomp on it later nsIFrame* origParentFrame = aParentFrame; NS_ASSERTION(aTag != nsnull, "null XUL tag"); if (aTag == nsnull) return NS_OK; const nsStyleDisplay* display = aStyleContext->GetStyleDisplay(); PRBool isXULNS = (aNameSpaceID == kNameSpaceID_XUL); PRBool isXULDisplay = IsXULDisplayType(display); // don't apply xul display types to tag based frames if (isXULDisplay && !isXULNS) { isXULDisplay = !IsSpecialContent(aContent, aTag, aNameSpaceID, aStyleContext); } if (isXULNS || isXULDisplay) { PRBool mayBeScrollable = PR_FALSE; if (isXULNS) { // First try creating a frame based on the tag // Make sure to keep IsSpecialContent in synch with this code #ifdef MOZ_XUL // BUTTON CONSTRUCTION if (aTag == nsXULAtoms::button || aTag == nsXULAtoms::checkbox || aTag == nsXULAtoms::radio) { isReplaced = PR_TRUE; rv = NS_NewButtonBoxFrame(mPresShell, &newFrame); // Boxes can scroll. mayBeScrollable = PR_TRUE; } // End of BUTTON CONSTRUCTION logic // AUTOREPEATBUTTON CONSTRUCTION else if (aTag == nsXULAtoms::autorepeatbutton) { isReplaced = PR_TRUE; rv = NS_NewAutoRepeatBoxFrame(mPresShell, &newFrame); // Boxes can scroll. mayBeScrollable = PR_TRUE; } // End of AUTOREPEATBUTTON CONSTRUCTION logic // TITLEBAR CONSTRUCTION else if (aTag == nsXULAtoms::titlebar) { isReplaced = PR_TRUE; rv = NS_NewTitleBarFrame(mPresShell, &newFrame); // Boxes can scroll. mayBeScrollable = PR_TRUE; } // End of TITLEBAR CONSTRUCTION logic // RESIZER CONSTRUCTION else if (aTag == nsXULAtoms::resizer) { isReplaced = PR_TRUE; rv = NS_NewResizerFrame(mPresShell, &newFrame); // Boxes can scroll. mayBeScrollable = PR_TRUE; } // End of RESIZER CONSTRUCTION logic else if (aTag == nsXULAtoms::image) { isReplaced = PR_TRUE; rv = NS_NewImageBoxFrame(mPresShell, &newFrame); } else if (aTag == nsXULAtoms::spring || aTag == nsHTMLAtoms::spacer) { isReplaced = PR_TRUE; rv = NS_NewLeafBoxFrame(mPresShell, &newFrame); } else if (aTag == nsXULAtoms::treechildren) { isReplaced = PR_TRUE; rv = NS_NewTreeBodyFrame(mPresShell, &newFrame); } else if (aTag == nsXULAtoms::treecol) { isReplaced = PR_TRUE; rv = NS_NewTreeColFrame(mPresShell, &newFrame); } // TEXT CONSTRUCTION else if (aTag == nsXULAtoms::text || aTag == nsHTMLAtoms::label || aTag == nsXULAtoms::description) { if ((aTag == nsHTMLAtoms::label || aTag == nsXULAtoms::description) && (! aContent->HasAttr(kNameSpaceID_None, nsHTMLAtoms::value))) { // XXX we should probably be calling ConstructBlock here to handle // things like columns etc rv = NS_NewAreaFrame(mPresShell, &newFrame, NS_BLOCK_SPACE_MGR | NS_BLOCK_SHRINK_WRAP | NS_BLOCK_MARGIN_ROOT); } else { isReplaced = PR_TRUE; rv = NS_NewTextBoxFrame(mPresShell, &newFrame); } } // End of TEXT CONSTRUCTION logic // Menu Construction else if (aTag == nsXULAtoms::menu || aTag == nsXULAtoms::menuitem || aTag == nsXULAtoms::menubutton) { // A derived class box frame // that has custom reflow to prevent menu children // from becoming part of the flow. isReplaced = PR_TRUE; rv = NS_NewMenuFrame(mPresShell, &newFrame, (aTag != nsXULAtoms::menuitem)); } else if (aTag == nsXULAtoms::menubar) { #ifdef XP_MACOSX // On Mac OS X, we use the system menubar for any root chrome shell // XUL menubars. PRBool isRootChromeShell = PR_FALSE; nsCOMPtr container = aState.mPresContext->GetContainer(); if (container) { nsCOMPtr treeItem(do_QueryInterface(container)); if (treeItem) { PRInt32 type; treeItem->GetItemType(&type); if (nsIDocShellTreeItem::typeChrome == type) { nsCOMPtr parent; treeItem->GetParent(getter_AddRefs(parent)); isRootChromeShell = !parent; } } } if (isRootChromeShell) { *aHaltProcessing = PR_TRUE; return NS_OK; } #endif rv = NS_NewMenuBarFrame(mPresShell, &newFrame); } else if (aTag == nsXULAtoms::popupgroup) { // This frame contains child popups isReplaced = PR_TRUE; rv = NS_NewPopupSetFrame(mPresShell, &newFrame); } else if (aTag == nsXULAtoms::iframe || aTag == nsXULAtoms::editor || aTag == nsXULAtoms::browser) { isReplaced = PR_TRUE; rv = NS_NewSubDocumentFrame(mPresShell, &newFrame); } // PROGRESS METER CONSTRUCTION else if (aTag == nsXULAtoms::progressmeter) { isReplaced = PR_TRUE; rv = NS_NewProgressMeterFrame(mPresShell, &newFrame); } // End of PROGRESS METER CONSTRUCTION logic else #endif // SLIDER CONSTRUCTION if (aTag == nsXULAtoms::slider) { isReplaced = PR_TRUE; rv = NS_NewSliderFrame(mPresShell, &newFrame); } // End of SLIDER CONSTRUCTION logic // SCROLLBAR CONSTRUCTION else if (aTag == nsXULAtoms::scrollbar) { isReplaced = PR_TRUE; rv = NS_NewScrollbarFrame(mPresShell, &newFrame); } else if (aTag == nsXULAtoms::nativescrollbar) { isReplaced = PR_TRUE; rv = NS_NewNativeScrollbarFrame(mPresShell, &newFrame); } // End of SCROLLBAR CONSTRUCTION logic // SCROLLBUTTON CONSTRUCTION else if (aTag == nsXULAtoms::scrollbarbutton) { isReplaced = PR_TRUE; rv = NS_NewScrollbarButtonFrame(mPresShell, &newFrame); } // End of SCROLLBUTTON CONSTRUCTION logic #ifdef MOZ_XUL // SPLITTER CONSTRUCTION else if (aTag == nsXULAtoms::splitter) { isReplaced = PR_TRUE; rv = NS_NewSplitterFrame(mPresShell, &newFrame); } // End of SPLITTER CONSTRUCTION logic // GRIPPY CONSTRUCTION else if (aTag == nsXULAtoms::grippy) { isReplaced = PR_TRUE; rv = NS_NewGrippyFrame(mPresShell, &newFrame); } // End of GRIPPY CONSTRUCTION logic #endif } // Display types for XUL start here // First is BOX if (!newFrame && isXULDisplay) { if (display->mDisplay == NS_STYLE_DISPLAY_INLINE_BOX || display->mDisplay == NS_STYLE_DISPLAY_BOX) { isReplaced = PR_TRUE; rv = NS_NewBoxFrame(mPresShell, &newFrame, PR_FALSE, nsnull); // Boxes can scroll. mayBeScrollable = PR_TRUE; } // End of BOX CONSTRUCTION logic #ifdef MOZ_XUL // ------- Begin Grid --------- else if (display->mDisplay == NS_STYLE_DISPLAY_INLINE_GRID || display->mDisplay == NS_STYLE_DISPLAY_GRID) { isReplaced = PR_TRUE; nsCOMPtr layout; NS_NewGridLayout2(mPresShell, getter_AddRefs(layout)); rv = NS_NewBoxFrame(mPresShell, &newFrame, PR_FALSE, layout); // Boxes can scroll. mayBeScrollable = PR_TRUE; } //------- End Grid ------ // ------- Begin Rows/Columns --------- else if (display->mDisplay == NS_STYLE_DISPLAY_GRID_GROUP) { isReplaced = PR_TRUE; nsCOMPtr layout; if (aTag == nsXULAtoms::listboxbody) { NS_NewListBoxLayout(mPresShell, layout); rv = NS_NewListBoxBodyFrame(mPresShell, &newFrame, PR_FALSE, layout); ((nsListBoxBodyFrame*)newFrame)->InitGroup(this, aState.mPresContext); } else { NS_NewGridRowGroupLayout(mPresShell, getter_AddRefs(layout)); rv = NS_NewGridRowGroupFrame(mPresShell, &newFrame, PR_FALSE, layout); } // Boxes can scroll. if (display->IsScrollableOverflow()) { // set the top to be the newly created scrollframe BuildScrollFrame(aState, aContent, aStyleContext, newFrame, aParentFrame, nsnull, topFrame, aStyleContext); // we have a scrollframe so the parent becomes the scroll frame. aParentFrame = newFrame->GetParent(); primaryFrameSet = PR_TRUE; frameHasBeenInitialized = PR_TRUE; } } //------- End Grid ------ // ------- Begin Row/Column --------- else if (display->mDisplay == NS_STYLE_DISPLAY_GRID_LINE) { isReplaced = PR_TRUE; nsCOMPtr layout; NS_NewGridRowLeafLayout(mPresShell, getter_AddRefs(layout)); if (aTag == nsXULAtoms::listitem) rv = NS_NewListItemFrame(mPresShell, &newFrame, PR_FALSE, layout); else rv = NS_NewGridRowLeafFrame(mPresShell, &newFrame, PR_FALSE, layout); // Boxes can scroll. mayBeScrollable = PR_TRUE; } //------- End Grid ------ // End of STACK CONSTRUCTION logic // DECK CONSTRUCTION else if (display->mDisplay == NS_STYLE_DISPLAY_DECK) { isReplaced = PR_TRUE; rv = NS_NewDeckFrame(mPresShell, &newFrame); } // End of DECK CONSTRUCTION logic else if (display->mDisplay == NS_STYLE_DISPLAY_GROUPBOX) { rv = NS_NewGroupBoxFrame(mPresShell, &newFrame); isReplaced = PR_TRUE; // Boxes can scroll. mayBeScrollable = PR_TRUE; } // STACK CONSTRUCTION else if (display->mDisplay == NS_STYLE_DISPLAY_STACK || display->mDisplay == NS_STYLE_DISPLAY_INLINE_STACK) { isReplaced = PR_TRUE; rv = NS_NewStackFrame(mPresShell, &newFrame); mayBeScrollable = PR_TRUE; } else if (display->mDisplay == NS_STYLE_DISPLAY_POPUP) { // This is its own frame that derives from // box. isReplaced = PR_TRUE; rv = NS_NewMenuPopupFrame(mPresShell, &newFrame); if (aTag == nsXULAtoms::tooltip) { nsAutoString defaultTooltip; aContent->GetAttr(kNameSpaceID_None, nsXULAtoms::defaultz, defaultTooltip); if (defaultTooltip.LowerCaseEqualsLiteral("true")) { // Locate the root frame and tell it about the tooltip. nsIFrame* rootFrame = aState.mFrameManager->GetRootFrame(); if (rootFrame) rootFrame = rootFrame->GetFirstChild(nsnull); nsCOMPtr rootBox(do_QueryInterface(rootFrame)); if (rootBox) rootBox->SetDefaultTooltip(aContent); } } // If a popup is inside a menu, then the menu understands the complex // rules/behavior governing the cascade of multiple menu popups and can handle // having the real popup frame placed under it as a child. // If, however, the parent is *not* a menu frame, then we need to create // a placeholder frame for the popup, and then we add the popup frame to the // root popup set (that manages all such "detached" popups). nsCOMPtr menuFrame(do_QueryInterface(aParentFrame)); if (!menuFrame) isPopup = PR_TRUE; } #endif } if (mayBeScrollable && display->IsScrollableOverflow()) { // set the top to be the newly created scrollframe BuildScrollFrame(aState, aContent, aStyleContext, newFrame, aParentFrame, nsnull, topFrame, aStyleContext); // we have a scrollframe so the parent becomes the scroll frame. // XXXldb Do we really want to do this? The one case where it // matters when |frameHasBeenInitialized| is true is one where // I think we'd be better off the other way around. aParentFrame = newFrame->GetParent(); primaryFrameSet = PR_TRUE; frameHasBeenInitialized = PR_TRUE; } } // If we succeeded in creating a frame then initialize it, process its // children (if requested), and set the initial child list if (NS_SUCCEEDED(rv) && newFrame != nsnull) { // if no top frame was created then the top is the new frame if (topFrame == nsnull) topFrame = newFrame; // If the frame is a replaced element, then set the frame state bit if (isReplaced) { newFrame->AddStateBits(NS_FRAME_REPLACED_ELEMENT); } // xul does not support absolute positioning nsIFrame* geometricParent = aParentFrame; /* nsIFrame* geometricParent = aState.GetGeometricParent(display, aParentFrame); */ // if the new frame was already initialized to initialize it again. if (!frameHasBeenInitialized) { rv = InitAndRestoreFrame(aState, aContent, geometricParent, aStyleContext, nsnull, newFrame); if (NS_FAILED(rv)) { newFrame->Destroy(aState.mPresContext); return rv; } /* // if our parent is a block frame then do things the way html likes it // if not then we are in a box so do what boxes like. On example is boxes // do not support the absolute positioning of their children. While html blocks // thats why we call different things here. nsIAtom* frameType = geometricParent->GetType(); if ((frameType == nsLayoutAtoms::blockFrame) || (frameType == nsLayoutAtoms::areaFrame)) { */ // See if we need to create a view, e.g. the frame is absolutely positioned nsHTMLContainerFrame::CreateViewForFrame(newFrame, aParentFrame, PR_FALSE); /* } else { // we are in a box so do the box thing. nsBoxFrame::CreateViewForFrame(aState.mPresContext, newFrame, aStyleContext, PR_FALSE); } */ } // If the frame is a popup, then create a placeholder frame #ifdef MOZ_XUL if (isPopup) { nsIFrame* placeholderFrame; CreatePlaceholderFrameFor(mPresShell, aState.mPresContext, aState.mFrameManager, aContent, newFrame, aStyleContext, aParentFrame, &placeholderFrame); // Locate the root popup set and add ourselves to the popup set's list // of popup frames. nsIFrame* rootFrame = aState.mFrameManager->GetRootFrame(); if (rootFrame) rootFrame = rootFrame->GetFirstChild(nsnull); nsCOMPtr rootBox(do_QueryInterface(rootFrame)); PRBool added = PR_FALSE; if (rootBox) { nsIFrame* popupSetFrame; rootBox->GetPopupSetFrame(&popupSetFrame); NS_ASSERTION(popupSetFrame, "unexpected null pointer"); if (popupSetFrame) { nsCOMPtr popupSet(do_QueryInterface(popupSetFrame)); NS_ASSERTION(popupSet, "unexpected null pointer"); if (popupSet) { added = PR_TRUE; popupSet->AddPopupFrame(newFrame); } } } if (added) { // Add the placeholder frame to the flow aFrameItems.AddChild(placeholderFrame); } else { // Didn't add the popup set frame... Need to clean up and // just not construct a frame here. aState.mFrameManager->UnregisterPlaceholderFrame(NS_STATIC_CAST(nsPlaceholderFrame*, placeholderFrame)); newFrame->Destroy(aState.mPresContext); placeholderFrame->Destroy(aState.mPresContext); *aHaltProcessing = PR_TRUE; return NS_OK; } } else { #endif // Add the new frame to our list of frame items. Note that we // don't support floating or positioning of XUL frames. rv = aState.AddChild(topFrame, aFrameItems, display, aContent, aStyleContext, origParentFrame, PR_FALSE, PR_FALSE); if (NS_FAILED(rv)) { return rv; } #ifdef MOZ_XUL } #endif // If the new frame isn't a float containing block, then push a null // float containing block to disable floats. This is needed to disable // floats within XUL frames. nsFrameConstructorSaveState floatSaveState; PRBool isFloatContainingBlock = newFrame->GetContentInsertionFrame()->IsFloatContainingBlock(); aState.PushFloatContainingBlock(isFloatContainingBlock ? newFrame : nsnull, floatSaveState, PR_FALSE, PR_FALSE); // Process the child content if requested nsFrameItems childItems; if (!newFrame->IsLeaf()) { // XXXbz don't we need calls to ShouldBuildChildFrames // elsewhere too? Why only for XUL? PRBool processChildren = PR_TRUE; mDocument->BindingManager()->ShouldBuildChildFrames(aContent, &processChildren); if (processChildren) rv = ProcessChildren(aState, aContent, newFrame, PR_FALSE, childItems, PR_FALSE); } CreateAnonymousFrames(aTag, aState, aContent, newFrame, PR_FALSE, childItems); // Set the frame's initial child list newFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); } #ifdef MOZ_XUL // register tooltip support if needed nsAutoString value; if (aTag == nsXULAtoms::treechildren || // trees always need titletips aContent->GetAttr(kNameSpaceID_None, nsXULAtoms::tooltiptext, value) != NS_CONTENT_ATTR_NOT_THERE || aContent->GetAttr(kNameSpaceID_None, nsXULAtoms::tooltip, value) != NS_CONTENT_ATTR_NOT_THERE) { nsIFrame* rootFrame = aState.mFrameManager->GetRootFrame(); if (rootFrame) rootFrame = rootFrame->GetFirstChild(nsnull); nsCOMPtr rootBox(do_QueryInterface(rootFrame)); if (rootBox) rootBox->AddTooltipSupport(aContent); } #endif // addToHashTable: if (newFrame && !newFrame->IsLeaf()) { rv = CreateInsertionPointChildren(aState, newFrame, aContent); NS_ENSURE_SUCCESS(rv, rv); } if (topFrame) { // the top frame is always what we map the content to. This is the frame that contains a pointer // to the content node. // Add a mapping from content object to primary frame. Note that for // floated and positioned frames this is the out-of-flow frame and not // the placeholder frame if (!primaryFrameSet) aState.mFrameManager->SetPrimaryFrameFor(aContent, topFrame); } return rv; } already_AddRefed nsCSSFrameConstructor::BeginBuildingScrollFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsStyleContext* aContentStyle, nsIFrame* aParentFrame, nsIFrame* aContentParentFrame, nsIAtom* aScrolledPseudo, PRBool aIsRoot, nsIFrame*& aNewFrame) { // Check to see the type of parent frame so we know whether we need to // turn off/on scaling for the scrollbars // // If the parent is a viewportFrame then we are the scrollbars for the UI // if not then we are scrollbars inside the document. PRBool noScalingOfTwips = PR_FALSE; PRBool isPrintPreview = aState.mPresContext->Type() == nsPresContext::eContext_PrintPreview; if (isPrintPreview) { noScalingOfTwips = aParentFrame->GetType() == nsLayoutAtoms::viewportFrame; if (noScalingOfTwips) { aState.mPresContext->SetScalingOfTwips(PR_FALSE); } } nsIFrame* parentFrame = nsnull; nsIFrame* gfxScrollFrame = aNewFrame; nsFrameItems anonymousItems; nsRefPtr contentStyle = aContentStyle; if (!gfxScrollFrame) { // Build a XULScrollFrame when the child is a box, otherwise an // HTMLScrollFrame if (IsXULDisplayType(aContentStyle->GetStyleDisplay())) { NS_NewXULScrollFrame(mPresShell, &gfxScrollFrame, aIsRoot); } else { NS_NewHTMLScrollFrame(mPresShell, &gfxScrollFrame, aIsRoot); } InitAndRestoreFrame(aState, aContent, aParentFrame, contentStyle, nsnull, gfxScrollFrame); // Create a view nsHTMLContainerFrame::CreateViewForFrame(gfxScrollFrame, aContentParentFrame, PR_FALSE); } // if there are any anonymous children for the scroll frame, create // frames for them. CreateAnonymousFrames(aState, aContent, mDocument, gfxScrollFrame, PR_FALSE, PR_FALSE, anonymousItems, nsnull, nsnull, PR_FALSE); parentFrame = gfxScrollFrame; aNewFrame = gfxScrollFrame; // we used the style that was passed in. So resolve another one. nsStyleSet *styleSet = mPresShell->StyleSet(); nsStyleContext* aScrolledChildStyle = styleSet->ResolvePseudoStyleFor(aContent, aScrolledPseudo, contentStyle).get(); if (gfxScrollFrame) { gfxScrollFrame->SetInitialChildList(aState.mPresContext, nsnull, anonymousItems.childList); } if (isPrintPreview && noScalingOfTwips) { aState.mPresContext->SetScalingOfTwips(PR_TRUE); } return aScrolledChildStyle;; } void nsCSSFrameConstructor::FinishBuildingScrollFrame(nsIFrame* aScrollFrame, nsIFrame* aScrolledFrame) { aScrollFrame->AppendFrames(nsnull, aScrolledFrame); // force the scrolled frame to have a view. The view will be parented to // the correct anonymous inner view because the scrollframes override // nsIFrame::GetParentViewForChildFrame. nsHTMLContainerFrame::CreateViewForFrame(aScrolledFrame, nsnull, PR_TRUE); nsIView* view = aScrolledFrame->GetView(); if (!view) return; } /** * Called to wrap a gfx scrollframe around a frame. The hierarchy will look like this * * ------- for gfx scrollbars ------ * * * ScrollFrame * ^ * | * Frame (scrolled frame you passed in) * * *----------------------------------- * LEGEND: * * ScrollFrame: This is a frame that manages gfx cross platform frame based scrollbars. * * @param aContent the content node of the child to wrap. * @param aScrolledFrame The frame of the content to wrap. This should not be * Initialized. This method will initialize it with a scrolled pseudo * and no nsIContent. The content will be attached to the scrollframe * returned. * @param aContentStyle the style context that has already been resolved for the content being passed in. * * @param aParentFrame The parent to attach the scroll frame to * * @param aNewFrame The new scrollframe or gfx scrollframe that we create. It will contain the * scrolled frame you passed in. (returned) * If this is not null, we'll just use it * @param aScrolledContentStyle the style that was resolved for the scrolled frame. (returned) */ nsresult nsCSSFrameConstructor::BuildScrollFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsStyleContext* aContentStyle, nsIFrame* aScrolledFrame, nsIFrame* aParentFrame, nsIFrame* aContentParentFrame, nsIFrame*& aNewFrame, nsStyleContext*& aScrolledContentStyle) { nsRefPtr scrolledContentStyle = BeginBuildingScrollFrame(aState, aContent, aContentStyle, aParentFrame, aContentParentFrame, nsCSSAnonBoxes::scrolledContent, PR_FALSE, aNewFrame); InitAndRestoreFrame(aState, aContent, aNewFrame, scrolledContentStyle, nsnull, aScrolledFrame); FinishBuildingScrollFrame(aNewFrame, aScrolledFrame); aScrolledContentStyle = scrolledContentStyle; // now set the primary frame to the ScrollFrame aState.mFrameManager->SetPrimaryFrameFor( aContent, aNewFrame ); return NS_OK; } nsresult nsCSSFrameConstructor::ConstructFrameByDisplayType(nsFrameConstructorState& aState, const nsStyleDisplay* aDisplay, nsIContent* aContent, PRInt32 aNameSpaceID, nsIAtom* aTag, nsIFrame* aParentFrame, nsStyleContext* aStyleContext, nsFrameItems& aFrameItems, PRBool aHasPseudoParent) { PRBool primaryFrameSet = PR_FALSE; nsIFrame* newFrame = nsnull; // the frame we construct nsTableCreator tableCreator(mPresShell); // Used to make table frames. PRBool addToHashTable = PR_TRUE; PRBool addedToFrameList = PR_FALSE; nsresult rv = NS_OK; // The style system ensures that floated and positioned frames are // block-level. NS_ASSERTION(!(aDisplay->IsFloating() || aDisplay->IsAbsolutelyPositioned()) || aDisplay->IsBlockLevel(), "Style system did not apply CSS2.1 section 9.7 fixups"); // If this is "body", try propagating its scroll style to the viewport // Note that we need to do this even if the body is NOT scrollable; // it might have dynamically changed from scrollable to not scrollable, // and that might need to be propagated. PRBool propagatedScrollToViewport = PR_FALSE; if (aContent->GetNodeInfo()->Equals(nsHTMLAtoms::body) && aContent->IsContentOfType(nsIContent::eHTML)) { propagatedScrollToViewport = PropagateScrollToViewport() == aContent; } // If the frame is a block-level frame and is scrollable, then wrap it // in a scroll frame. // XXX Ignore tables for the time being if (aDisplay->IsBlockLevel() && aDisplay->mDisplay != NS_STYLE_DISPLAY_TABLE && aDisplay->IsScrollableOverflow() && !propagatedScrollToViewport) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } nsRefPtr scrolledContentStyle = BeginBuildingScrollFrame(aState, aContent, aStyleContext, aState.GetGeometricParent(aDisplay, aParentFrame), aParentFrame, nsCSSAnonBoxes::scrolledContent, PR_FALSE, newFrame); // Initialize it nsIFrame* scrolledFrame = nsnull; NS_NewAreaFrame(mPresShell, &scrolledFrame, NS_BLOCK_SPACE_MGR | NS_BLOCK_SHRINK_WRAP | NS_BLOCK_MARGIN_ROOT); nsFrameItems blockItem; rv = ConstructBlock(aState, scrolledContentStyle->GetStyleDisplay(), aContent, newFrame, newFrame, scrolledContentStyle, &scrolledFrame, blockItem, aDisplay->IsPositioned()); NS_ASSERTION(blockItem.childList == scrolledFrame, "Scrollframe's frameItems should be exactly the scrolled frame"); FinishBuildingScrollFrame(newFrame, scrolledFrame); rv = aState.AddChild(newFrame, aFrameItems, aDisplay, aContent, aStyleContext, aParentFrame); if (NS_FAILED(rv)) { return rv; } addedToFrameList = PR_TRUE; } // See if the frame is absolute or fixed positioned else if (aDisplay->IsAbsolutelyPositioned() && (NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay || NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay)) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } // Create a frame to wrap up the absolute positioned item NS_NewAbsoluteItemWrapperFrame(mPresShell, &newFrame); rv = ConstructBlock(aState, aDisplay, aContent, aState.GetGeometricParent(aDisplay, aParentFrame), aParentFrame, aStyleContext, &newFrame, aFrameItems, PR_TRUE); if (NS_FAILED(rv)) { return rv; } addedToFrameList = PR_TRUE; } // See if the frame is floated and it's a block frame else if (aDisplay->IsFloating() && (NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay || NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay)) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } // Create an area frame NS_NewFloatingItemWrapperFrame(mPresShell, &newFrame); rv = ConstructBlock(aState, aDisplay, aContent, aState.GetGeometricParent(aDisplay, aParentFrame), aParentFrame, aStyleContext, &newFrame, aFrameItems, aDisplay->mPosition == NS_STYLE_POSITION_RELATIVE); if (NS_FAILED(rv)) { return rv; } addedToFrameList = PR_TRUE; } // See if it's relatively positioned else if ((NS_STYLE_POSITION_RELATIVE == aDisplay->mPosition) && ((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) || (NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) || (NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay))) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } // Is it block-level or inline-level? if ((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) || (NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay)) { // Create a wrapper frame. No space manager, though NS_NewRelativeItemWrapperFrame(mPresShell, &newFrame); // XXXbz should we be passing in a non-null aContentParentFrame? ConstructBlock(aState, aDisplay, aContent, aParentFrame, nsnull, aStyleContext, &newFrame, aFrameItems, PR_TRUE); addedToFrameList = PR_TRUE; } else { // Create a positioned inline frame NS_NewPositionedInlineFrame(mPresShell, &newFrame); // Note that we want to insert the inline after processing kids, since // processing of kids may split the inline. ConstructInline(aState, aDisplay, aContent, aParentFrame, aStyleContext, PR_TRUE, newFrame); } } // See if it's a block frame of some sort else if ((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) || (NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay) || (NS_STYLE_DISPLAY_RUN_IN == aDisplay->mDisplay) || (NS_STYLE_DISPLAY_COMPACT == aDisplay->mDisplay) || (NS_STYLE_DISPLAY_INLINE_BLOCK == aDisplay->mDisplay)) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } PRUint32 flags = 0; if (NS_STYLE_DISPLAY_INLINE_BLOCK == aDisplay->mDisplay) { flags = NS_BLOCK_SPACE_MGR | NS_BLOCK_MARGIN_ROOT; } // Create the block frame rv = NS_NewBlockFrame(mPresShell, &newFrame, flags); if (NS_SUCCEEDED(rv)) { // That worked so construct the block and its children // XXXbz should we be passing in a non-null aContentParentFrame? rv = ConstructBlock(aState, aDisplay, aContent, aParentFrame, nsnull, aStyleContext, &newFrame, aFrameItems, PR_FALSE); addedToFrameList = PR_TRUE; } } // See if it's an inline frame of some sort else if ((NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) || (NS_STYLE_DISPLAY_MARKER == aDisplay->mDisplay)) { if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } // Create the inline frame rv = NS_NewInlineFrame(mPresShell, &newFrame); if (NS_SUCCEEDED(rv)) { // That worked so construct the inline and its children // Note that we want to insert the inline after processing kids, since // processing of kids may split the inline. rv = ConstructInline(aState, aDisplay, aContent, aParentFrame, aStyleContext, PR_FALSE, newFrame); } // To keep the hash table small don't add inline frames (they're // typically things like FONT and B), because we can quickly // find them if we need to addToHashTable = PR_FALSE; } // otherwise let the display property influence the frame type to create else { // XXX This section now only handles table frames; should be // factored out probably // Use the 'display' property to choose a frame type switch (aDisplay->mDisplay) { case NS_STYLE_DISPLAY_TABLE: { // XXXbz this isn't quite right, but checking for aHasPseudoParent here // would just lead us to ProcessPseudoFrames inside ConstructTableFrame. if (!aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } nsIFrame* innerTable; rv = ConstructTableFrame(aState, aContent, aParentFrame, aStyleContext, tableCreator, PR_FALSE, aFrameItems, PR_TRUE, newFrame, innerTable); addedToFrameList = PR_TRUE; // Note: table construction function takes care of initializing // the frame, processing children, and setting the initial child // list break; } // the next 5 cases are only relevant if the parent is not a table, ConstructTableFrame handles children case NS_STYLE_DISPLAY_TABLE_CAPTION: { // aParentFrame may be an inner table frame rather than an outer frame // In this case we need to get the outer frame. nsIFrame* parentFrame = aParentFrame; nsIFrame* outerFrame = aParentFrame->GetParent(); if (outerFrame) { if ((nsLayoutAtoms::tableOuterFrame == outerFrame->GetType()) && (nsLayoutAtoms::tableFrame == parentFrame->GetType())) { parentFrame = outerFrame; } } rv = ConstructTableCaptionFrame(aState, aContent, parentFrame, aStyleContext, tableCreator, aFrameItems, newFrame, aHasPseudoParent); if (NS_SUCCEEDED(rv) && !aHasPseudoParent) { aFrameItems.AddChild(newFrame); } return rv; } case NS_STYLE_DISPLAY_TABLE_ROW_GROUP: case NS_STYLE_DISPLAY_TABLE_HEADER_GROUP: case NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP: rv = ConstructTableRowGroupFrame(aState, aContent, aParentFrame, aStyleContext, tableCreator, PR_FALSE, aFrameItems, newFrame, aHasPseudoParent); if (NS_SUCCEEDED(rv) && !aHasPseudoParent) { aFrameItems.AddChild(newFrame); } return rv; case NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP: rv = ConstructTableColGroupFrame(aState, aContent, aParentFrame, aStyleContext, tableCreator, PR_FALSE, aFrameItems, newFrame, aHasPseudoParent); if (NS_SUCCEEDED(rv) && !aHasPseudoParent) { aFrameItems.AddChild(newFrame); } return rv; case NS_STYLE_DISPLAY_TABLE_COLUMN: rv = ConstructTableColFrame(aState, aContent, aParentFrame, aStyleContext, tableCreator, PR_FALSE, aFrameItems, newFrame, aHasPseudoParent); if (NS_SUCCEEDED(rv) && !aHasPseudoParent) { aFrameItems.AddChild(newFrame); } return rv; case NS_STYLE_DISPLAY_TABLE_ROW: rv = ConstructTableRowFrame(aState, aContent, aParentFrame, aStyleContext, tableCreator, PR_FALSE, aFrameItems, newFrame, aHasPseudoParent); if (NS_SUCCEEDED(rv) && !aHasPseudoParent) { aFrameItems.AddChild(newFrame); } return rv; case NS_STYLE_DISPLAY_TABLE_CELL: { nsIFrame* innerTable; rv = ConstructTableCellFrame(aState, aContent, aParentFrame, aStyleContext, tableCreator, PR_FALSE, aFrameItems, newFrame, innerTable, aHasPseudoParent); if (NS_SUCCEEDED(rv) && !aHasPseudoParent) { aFrameItems.AddChild(newFrame); } return rv; } default: NS_NOTREACHED("How did we get here? (ok if from CantRenderReplacedElement)"); return NS_ERROR_FAILURE; } } if (!addedToFrameList) { // Gotta do it here NS_ASSERTION(!aDisplay->IsAbsolutelyPositioned() && !aDisplay->IsFloating(), "Things that could be out-of-flow need to handle adding " "to the frame list themselves"); rv = aState.AddChild(newFrame, aFrameItems, aDisplay, aContent, aStyleContext, aParentFrame); NS_ASSERTION(NS_SUCCEEDED(rv), "Cases where AddChild() can fail must handle it themselves"); } if (newFrame) { rv = CreateInsertionPointChildren(aState, newFrame, aContent); NS_ENSURE_SUCCESS(rv, rv); if (addToHashTable) { // Add a mapping from content object to primary frame. Note that for // floated and positioned frames this is the out-of-flow frame and not // the placeholder frame if (!primaryFrameSet) aState.mFrameManager->SetPrimaryFrameFor(aContent, newFrame); } } return rv; } nsresult nsCSSFrameConstructor::InitAndRestoreFrame(const nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsStyleContext* aStyleContext, nsIFrame* aPrevInFlow, nsIFrame* aNewFrame, PRBool aAllowCounters) { nsresult rv = NS_OK; NS_ASSERTION(aNewFrame, "Null frame cannot be initialized"); if (!aNewFrame) return NS_ERROR_NULL_POINTER; // Initialize the frame rv = aNewFrame->Init(aState.mPresContext, aContent, aParentFrame, aStyleContext, aPrevInFlow); if (aState.mFrameState && aState.mFrameManager) { // Restore frame state for just the newly created frame. aState.mFrameManager->RestoreFrameStateFor(aNewFrame, aState.mFrameState); } if (aAllowCounters && !aPrevInFlow && mCounterManager.AddCounterResetsAndIncrements(aNewFrame)) { CountersDirty(); } return rv; } already_AddRefed nsCSSFrameConstructor::ResolveStyleContext(nsIFrame* aParentFrame, nsIContent* aContent) { aParentFrame = nsFrame::CorrectStyleParentFrame(aParentFrame, nsnull); // Resolve the style context based on the content object and the parent // style context nsStyleContext* parentStyleContext = aParentFrame->GetStyleContext(); nsStyleSet *styleSet = mPresShell->StyleSet(); if (aContent->IsContentOfType(nsIContent::eELEMENT)) { return styleSet->ResolveStyleFor(aContent, parentStyleContext); } else { NS_ASSERTION(aContent->IsContentOfType(nsIContent::eTEXT), "shouldn't waste time creating style contexts for " "comments and processing instructions"); return styleSet->ResolveStyleForNonElement(parentStyleContext); } } // MathML Mod - RBS #ifdef MOZ_MATHML nsresult nsCSSFrameConstructor::ConstructMathMLFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsIAtom* aTag, PRInt32 aNameSpaceID, nsStyleContext* aStyleContext, nsFrameItems& aFrameItems, PRBool aHasPseudoParent) { // Make sure that we remain confined in the MathML world if (aNameSpaceID != kNameSpaceID_MathML) return NS_OK; nsresult rv = NS_OK; PRBool isReplaced = PR_FALSE; PRBool ignoreInterTagWhitespace = PR_TRUE; NS_ASSERTION(aTag != nsnull, "null MathML tag"); if (aTag == nsnull) return NS_OK; // Initialize the new frame nsIFrame* newFrame = nsnull; // Make sure to keep IsSpecialContent in synch with this code const nsStyleDisplay* disp = aStyleContext->GetStyleDisplay(); // Leverage IsSpecialContent to check if one of the |if aTag| below will // surely match (knowing that aNameSpaceID == kNameSpaceID_MathML here) if (IsSpecialContent(aContent, aTag, aNameSpaceID, aStyleContext)) { // process pending pseudo frames if (!aHasPseudoParent && !aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } } if (aTag == nsMathMLAtoms::mi_ || aTag == nsMathMLAtoms::mn_ || aTag == nsMathMLAtoms::ms_ || aTag == nsMathMLAtoms::mtext_) rv = NS_NewMathMLTokenFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::mo_) rv = NS_NewMathMLmoFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::mfrac_) rv = NS_NewMathMLmfracFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::msup_) rv = NS_NewMathMLmsupFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::msub_) rv = NS_NewMathMLmsubFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::msubsup_) rv = NS_NewMathMLmsubsupFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::munder_) rv = NS_NewMathMLmunderFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::mover_) rv = NS_NewMathMLmoverFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::munderover_) rv = NS_NewMathMLmunderoverFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::mphantom_) rv = NS_NewMathMLmphantomFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::mpadded_) rv = NS_NewMathMLmpaddedFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::mspace_ || aTag == nsMathMLAtoms::none_ || aTag == nsMathMLAtoms::mprescripts_ ) rv = NS_NewMathMLmspaceFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::mfenced_) rv = NS_NewMathMLmfencedFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::mmultiscripts_) rv = NS_NewMathMLmmultiscriptsFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::mstyle_) rv = NS_NewMathMLmstyleFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::msqrt_) rv = NS_NewMathMLmsqrtFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::mroot_) rv = NS_NewMathMLmrootFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::maction_) rv = NS_NewMathMLmactionFrame(mPresShell, &newFrame); else if (aTag == nsMathMLAtoms::mrow_ || aTag == nsMathMLAtoms::merror_) rv = NS_NewMathMLmrowFrame(mPresShell, &newFrame); // CONSTRUCTION of MTABLE elements else if (aTag == nsMathMLAtoms::mtable_ && disp->mDisplay == NS_STYLE_DISPLAY_TABLE) { // is an inline-table -- but this isn't yet supported. // What we do here is to wrap the table in an anonymous containing // block so that it can mix better with other surrounding MathML markups // XXXbz this is wrong if the is positioned or floated. nsStyleContext* parentContext = aParentFrame->GetStyleContext(); nsStyleSet *styleSet = mPresShell->StyleSet(); // first, create a MathML mrow frame that will wrap the block frame rv = NS_NewMathMLmrowFrame(mPresShell, &newFrame); if (NS_FAILED(rv)) return rv; nsRefPtr mrowContext; mrowContext = styleSet->ResolvePseudoStyleFor(aContent, nsCSSAnonBoxes::mozMathInline, parentContext); InitAndRestoreFrame(aState, aContent, aParentFrame, mrowContext, nsnull, newFrame); // then, create a block frame that will wrap the table frame nsIFrame* blockFrame; rv = NS_NewBlockFrame(mPresShell, &blockFrame, NS_BLOCK_SPACE_MGR | NS_BLOCK_MARGIN_ROOT); if (NS_FAILED(rv)) return rv; nsRefPtr blockContext; blockContext = styleSet->ResolvePseudoStyleFor(aContent, nsCSSAnonBoxes::mozMathMLAnonymousBlock, mrowContext); InitAndRestoreFrame(aState, aContent, newFrame, blockContext, nsnull, blockFrame); // then, create the table frame itself nsRefPtr tableContext; tableContext = styleSet->ResolveStyleFor(aContent, blockContext); nsFrameItems tempItems; nsIFrame* outerTable; nsIFrame* innerTable; nsMathMLmtableCreator mathTableCreator(mPresShell); // XXXbz note: since we're constructing a table frame, and it does things // based on whether its parent is a pseudo or not, we need to save our // pseudo state here. This can go away if we switch to a direct // construction of mtable as an inline-table. nsPseudoFrames priorPseudoFrames; aState.mPseudoFrames.Reset(&priorPseudoFrames); rv = ConstructTableFrame(aState, aContent, blockFrame, tableContext, mathTableCreator, PR_FALSE, tempItems, PR_FALSE, outerTable, innerTable); // Note: table construction function takes care of initializing the frame, // processing children, and setting the initial child list NS_ASSERTION(aState.mPseudoFrames.IsEmpty(), "How did we end up with pseudo-frames here?"); // restore the incoming pseudo frame state. Note that we MUST do this // before adding things to aFrameItems. aState.mPseudoFrames = priorPseudoFrames; // set the outerTable as the initial child of the anonymous block blockFrame->SetInitialChildList(aState.mPresContext, nsnull, outerTable); // set the block frame as the initial child of the mrow frame newFrame->SetInitialChildList(aState.mPresContext, nsnull, blockFrame); // add the new frame to the flow // XXXbz this is wrong. What if it's out-of-flow? For that matter, this // is putting the frame in the wrong child list in the "pseudoParent == // PR_TRUE" case, which I assume we can hit. aFrameItems.AddChild(newFrame); return rv; } // End CONSTRUCTION of MTABLE elements else if (aTag == nsMathMLAtoms::math) { // root element const nsStyleDisplay* display = aStyleContext->GetStyleDisplay(); PRBool isBlock = (NS_STYLE_DISPLAY_BLOCK == display->mDisplay); rv = NS_NewMathMLmathFrame(mPresShell, &newFrame, isBlock); } else { return rv; } // If we succeeded in creating a frame then initialize it, process its // children (if requested), and set the initial child list if (NS_SUCCEEDED(rv) && newFrame) { // If the frame is a replaced element, then set the frame state bit if (isReplaced) { newFrame->AddStateBits(NS_FRAME_REPLACED_ELEMENT); } // record that children that are ignorable whitespace should be excluded if (ignoreInterTagWhitespace) { newFrame->AddStateBits(NS_FRAME_EXCLUDE_IGNORABLE_WHITESPACE); } // Only elements can be floated or positioned. All other MathML // should be in-flow. PRBool isMath = aTag == nsMathMLAtoms::math; nsIFrame* geometricParent = isMath ? aState.GetGeometricParent(disp, aParentFrame) : aParentFrame; InitAndRestoreFrame(aState, aContent, geometricParent, aStyleContext, nsnull, newFrame); // See if we need to create a view, e.g. the frame is absolutely positioned nsHTMLContainerFrame::CreateViewForFrame(newFrame, aParentFrame, PR_FALSE); rv = aState.AddChild(newFrame, aFrameItems, disp, aContent, aStyleContext, aParentFrame, isMath, isMath); if (NS_FAILED(rv)) { return rv; } // Push a null float containing block to disable floating within mathml nsFrameConstructorSaveState floatSaveState; aState.PushFloatContainingBlock(nsnull, floatSaveState, PR_FALSE, PR_FALSE); // Same for absolute positioning nsFrameConstructorSaveState absoluteSaveState; aState.PushAbsoluteContainingBlock(nsnull, absoluteSaveState); // MathML frames are inline frames, so just process their kids nsFrameItems childItems; if (!newFrame->IsLeaf()) { rv = ProcessChildren(aState, aContent, newFrame, PR_TRUE, childItems, PR_FALSE); } CreateAnonymousFrames(aTag, aState, aContent, newFrame, PR_FALSE, childItems); // Set the frame's initial child list newFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); if (!newFrame->IsLeaf()) { rv = CreateInsertionPointChildren(aState, newFrame, aContent); } } return rv; } #endif // MOZ_MATHML // XTF #ifdef MOZ_XTF nsresult nsCSSFrameConstructor::ConstructXTFFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsIAtom* aTag, PRInt32 aNameSpaceID, nsStyleContext* aStyleContext, nsFrameItems& aFrameItems, PRBool aHasPseudoParent) { #ifdef DEBUG // printf("nsCSSFrameConstructor::ConstructXTFFrame\n"); #endif nsresult rv = NS_OK; PRBool forceView = PR_FALSE; PRBool isBlock = PR_FALSE; // XXXbz somewhere here we should process pseudo frames if !aHasPseudoParent //NS_ASSERTION(aTag != nsnull, "null XTF tag"); //if (aTag == nsnull) // return NS_OK; // Initialize the new frame nsIFrame* newFrame = nsnull; // See if the element is absolute or fixed positioned const nsStyleDisplay* disp = aStyleContext->GetStyleDisplay(); nsCOMPtr xtfElem = do_QueryInterface(aContent); NS_ASSERTION(xtfElem, "huh? no xtf element?"); switch(xtfElem->GetElementType()) { case nsIXTFElement::ELEMENT_TYPE_SVG_VISUAL: #ifdef MOZ_SVG rv = NS_NewXTFSVGDisplayFrame(mPresShell, aContent, &newFrame); #else NS_ERROR("xtf svg visuals are only supported in mozilla builds with native svg"); #endif break; case nsIXTFElement::ELEMENT_TYPE_XML_VISUAL: { PRBool isBlock = (NS_STYLE_DISPLAY_BLOCK == disp->mDisplay); rv = NS_NewXTFXMLDisplayFrame(mPresShell, isBlock, &newFrame); } break; case nsIXTFElement::ELEMENT_TYPE_XUL_VISUAL: rv = NS_NewXTFXULDisplayFrame(mPresShell, &newFrame); break; case nsIXTFElement::ELEMENT_TYPE_GENERIC_ELEMENT: NS_ERROR("huh? ELEMENT_TYPE_GENERIC_ELEMENT should have been flagged by caller"); break; default: NS_ERROR("unknown xtf frame!"); return NS_OK; } // If we succeeded in creating a frame then initialize it, process its // children (if requested), and set the initial child list if (NS_SUCCEEDED(rv) && newFrame != nsnull) { InitAndRestoreFrame(aState, aContent, aState.GetGeometricParent(disp, aParentFrame), aStyleContext, nsnull, newFrame); nsHTMLContainerFrame::CreateViewForFrame(newFrame, aParentFrame, forceView); rv = aState.AddChild(newFrame, aFrameItems, disp, aContent, aStyleContext, aParentFrame); if (NS_FAILED(rv)) { return rv; } // Get the content node in the anonymous content tree where the explicit // children should be inserted. nsCOMPtr insertionNode = newFrame->GetContentInsertionNode(); // Create anonymous frames before processing children, so that // explicit child content can be appended to the correct anonymous // frame. Call version of CreateAnonymousFrames that doesn't check // tag: nsCOMPtr visual = do_QueryInterface(xtfElem); NS_ASSERTION(visual, "xtf wrapper not implementing nsIXTFVisualWrapperPrivate"); nsFrameItems childItems; // Since we've set the insertion frame, our children will automatically // be constructed once |insertionNode| has had its frame created. // Call version of CreateAnonymousFrames that doesn't check tag: CreateAnonymousFrames(aState, aContent, mDocument, newFrame, visual->ApplyDocumentStyleSheets(), PR_FALSE, childItems, newFrame, insertionNode, isBlock); // Set the frame's initial child list newFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); // Note: we don't worry about insertionFrame here because we know // that XTF elements always insert into the primary frame of their // insertion content. rv = CreateInsertionPointChildren(aState, newFrame, aContent, PR_FALSE); } return rv; } #endif // MOZ_XTF // SVG #ifdef MOZ_SVG nsresult nsCSSFrameConstructor::TestSVGConditions(nsIContent* aContent, PRBool& aHasRequiredExtensions, PRBool& aHasRequiredFeatures, PRBool& aHasSystemLanguage) { nsresult rv = NS_OK; nsAutoString value; // Only elements can have tests on them if (! aContent->IsContentOfType(nsIContent::eELEMENT)) { aHasRequiredExtensions = PR_FALSE; aHasRequiredFeatures = PR_FALSE; aHasSystemLanguage = PR_FALSE; return rv; } // Required Extensions // // The requiredExtensions attribute defines a list of required language // extensions. Language extensions are capabilities within a user agent that // go beyond the feature set defined in the SVG specification. // Each extension is identified by a URI reference. rv = aContent->GetAttr(kNameSpaceID_None, nsSVGAtoms::requiredExtensions, value); if (NS_FAILED(rv)) return rv; aHasRequiredExtensions = PR_TRUE; if (NS_CONTENT_ATTR_HAS_VALUE == rv) { // For now, claim that mozilla's SVG implementation supports // no extensions. So, if extensions are required, we don't have // them available. aHasRequiredExtensions = PR_FALSE; } // Required Features aHasRequiredFeatures = PR_TRUE; rv = aContent->GetAttr(kNameSpaceID_None, nsSVGAtoms::requiredFeatures, value); if (NS_FAILED(rv)) return rv; if (NS_CONTENT_ATTR_HAS_VALUE == rv) { aHasRequiredFeatures = NS_SVG_TestFeatures(value); } // systemLanguage // // Evaluates to "true" if one of the languages indicated by user preferences // exactly equals one of the languages given in the value of this parameter, // or if one of the languages indicated by user preferences exactly equals a // prefix of one of the languages given in the value of this parameter such // that the first tag character following the prefix is "-". aHasSystemLanguage = PR_TRUE; rv = aContent->GetAttr(kNameSpaceID_None, nsSVGAtoms::systemLanguage, value); if (NS_CONTENT_ATTR_HAS_VALUE == rv) { // Get our language preferences nsAutoString langPrefs(nsContentUtils::GetLocalizedStringPref("intl.accept_languages")); if (!langPrefs.IsEmpty()) { langPrefs.StripWhitespace(); value.StripWhitespace(); #ifdef DEBUG_scooter printf("Calling SVG_TestLanguage('%s','%s')\n", NS_ConvertUCS2toUTF8(value).get(), NS_ConvertUCS2toUTF8(langPrefs).get()); #endif aHasSystemLanguage = SVG_TestLanguage(value, langPrefs); } else { // For now, evaluate to true. NS_WARNING("no default language specified for systemLanguage conditional test"); aHasSystemLanguage = PR_TRUE; } return NS_OK; } return rv; } nsresult nsCSSFrameConstructor::SVGSwitchProcessChildren(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aFrame, nsFrameItems& aFrameItems) { nsresult rv = NS_OK; PRBool hasRequiredExtensions = PR_FALSE; PRBool hasRequiredFeatures = PR_FALSE; PRBool hasSystemLanguage = PR_FALSE; // save the incoming pseudo frame state nsPseudoFrames priorPseudoFrames; aState.mPseudoFrames.Reset(&priorPseudoFrames); // The 'switch' element evaluates the requiredFeatures, // requiredExtensions and systemLanguage attributes on its direct child // elements in order, and then processes and renders the first child for // which these attributes evaluate to true. All others will be bypassed and // therefore not rendered. PRInt32 childCount = aContent->GetChildCount(); for (PRInt32 i = 0; i < childCount; ++i) { nsIContent* child = aContent->GetChildAt(i); // Skip over children that aren't elements if (!child->IsContentOfType(nsIContent::eELEMENT)) { continue; } rv = TestSVGConditions(child, hasRequiredExtensions, hasRequiredFeatures, hasSystemLanguage); #ifdef DEBUG_scooter nsAutoString str; child->Tag()->ToString(str); printf("Child tag: %s\n", NS_ConvertUCS2toUTF8(str).get()); printf("SwitchProcessChildren: Required Extentions = %s, Required Features = %s, System Language = %s\n", hasRequiredExtensions ? "true" : "false", hasRequiredFeatures ? "true" : "false", hasSystemLanguage ? "true" : "false"); #endif if (NS_FAILED(rv)) return rv; if (hasRequiredExtensions && hasRequiredFeatures && hasSystemLanguage) { rv = ConstructFrame(aState, child, aFrame, aFrameItems); if (NS_FAILED(rv)) return rv; // No errors -- break out of loop (only render the first matching element) break; } } // process the current pseudo frame state if (!aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } // restore the incoming pseudo frame state aState.mPseudoFrames = priorPseudoFrames; return rv; } nsresult nsCSSFrameConstructor::ConstructSVGFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsIAtom* aTag, PRInt32 aNameSpaceID, nsStyleContext* aStyleContext, nsFrameItems& aFrameItems, PRBool aHasPseudoParent, PRBool* aHaltProcessing) { NS_ASSERTION(aNameSpaceID == kNameSpaceID_SVG, "SVG frame constructed in wrong namespace"); *aHaltProcessing = PR_FALSE; nsresult rv = NS_OK; PRBool forceView = PR_FALSE; PRBool isOuterSVGNode = PR_FALSE; const nsStyleDisplay* disp = aStyleContext->GetStyleDisplay(); NS_ASSERTION(aTag != nsnull, "null SVG tag"); if (aTag == nsnull) return NS_OK; // XXXbz somewhere here we should process pseudo frames if !aHasPseudoParent // Initialize the new frame nsIFrame* newFrame = nsnull; // Default to aParentFrame for the geometricParent; it's adjusted in // cases when we allow anything else. nsIFrame* geometricParent = aParentFrame; PRBool parentIsSVG = PR_FALSE; if (aParentFrame && aParentFrame->GetContent()) { nsCOMPtr parentTag; PRInt32 parentNSID; mDocument->BindingManager()->ResolveTag(aParentFrame->GetContent(), &parentNSID, getter_AddRefs(parentTag)); parentIsSVG = parentNSID == kNameSpaceID_SVG #ifdef MOZ_SVG_FOREIGNOBJECT // It's not clear whether the SVG spec intends to allow any SVG // content within svg:foreignObject at all (SVG 1.1, section // 23.2), but if it does, it better be svg:svg. So given that // we're allowing it, treat it as a non-SVG parent. && parentTag != nsSVGAtoms::foreignObject #endif ; } if (aTag != nsSVGAtoms::svg && !parentIsSVG) { // Sections 5.1 and G.4 of SVG 1.1 say that SVG elements other than // svg:svg not contained within svg:svg are incorrect, although they // don't seem to specify error handling. Ignore them, since many of // our frame classes can't deal. It *may* be that the document // should at that point be considered in error according to F.2, but // it's hard to tell. // Style mutation can't change this situation, so don't bother // adding to the undisplayed content map. *aHaltProcessing = PR_TRUE; return NS_OK; } // Make sure to keep IsSpecialContent in synch with this code if (aTag == nsSVGAtoms::svg) { if (!parentIsSVG) { // This is the outermost element. isOuterSVGNode = PR_TRUE; // Set the right geometricParent geometricParent = aState.GetGeometricParent(disp, aParentFrame); forceView = PR_TRUE; rv = NS_NewSVGOuterSVGFrame(mPresShell, aContent, &newFrame); } else { // This is an inner element rv = NS_NewSVGInnerSVGFrame(mPresShell, aContent, &newFrame); } } else if (aTag == nsSVGAtoms::g) { rv = NS_NewSVGGFrame(mPresShell, aContent, &newFrame); } else if (aTag == nsSVGAtoms::polygon) rv = NS_NewSVGPolygonFrame(mPresShell, aContent, &newFrame); else if (aTag == nsSVGAtoms::polyline) rv = NS_NewSVGPolylineFrame(mPresShell, aContent, &newFrame); else if (aTag == nsSVGAtoms::circle) rv = NS_NewSVGCircleFrame(mPresShell, aContent, &newFrame); else if (aTag == nsSVGAtoms::defs) { rv = NS_NewSVGDefsFrame(mPresShell, aContent, &newFrame); } else if (aTag == nsSVGAtoms::ellipse) rv = NS_NewSVGEllipseFrame(mPresShell, aContent, &newFrame); else if (aTag == nsSVGAtoms::line) rv = NS_NewSVGLineFrame(mPresShell, aContent, &newFrame); else if (aTag == nsSVGAtoms::rect) rv = NS_NewSVGRectFrame(mPresShell, aContent, &newFrame); #ifdef MOZ_SVG_FOREIGNOBJECT else if (aTag == nsSVGAtoms::foreignObject) { rv = NS_NewSVGForeignObjectFrame(mPresShell, aContent, &newFrame); } #endif else if (aTag == nsSVGAtoms::path) rv = NS_NewSVGPathFrame(mPresShell, aContent, &newFrame); else if (aTag == nsSVGAtoms::text) { rv = NS_NewSVGTextFrame(mPresShell, aContent, &newFrame); } else if (aTag == nsSVGAtoms::tspan) { rv = NS_NewSVGTSpanFrame(mPresShell, aContent, aParentFrame, &newFrame); } else if (aTag == nsSVGAtoms::linearGradient) { rv = NS_NewSVGLinearGradientFrame(mPresShell, aContent, &newFrame); } else if (aTag == nsSVGAtoms::radialGradient) { rv = NS_NewSVGRadialGradientFrame(mPresShell, aContent, &newFrame); } else if (aTag == nsSVGAtoms::stop) { rv = NS_NewSVGStopFrame(mPresShell, aContent, aParentFrame, &newFrame); } else if (aTag == nsSVGAtoms::use) { rv = NS_NewSVGUseFrame(mPresShell, aContent, &newFrame); } else if (aTag == nsSVGAtoms::marker) { rv = NS_NewSVGMarkerFrame(mPresShell, aContent, &newFrame); } else if (aTag == nsSVGAtoms::image) { rv = NS_NewSVGImageFrame(mPresShell, aContent, &newFrame); } else if (aTag == nsSVGAtoms::clipPath) { rv = NS_NewSVGClipPathFrame(mPresShell, aContent, &newFrame); } else if (aTag == nsSVGAtoms::textPath) { rv = NS_NewSVGTextPathFrame(mPresShell, aContent, aParentFrame, &newFrame); } if (newFrame == nsnull) { // Either we have an unknown tag, or construction of a frame // failed. One reason why frame construction for a known tag might // have failed is that the content element doesn't implement all // interfaces required by the frame. This happens e.g. when using // 'extends' in xbl to extend an xbl binding from an svg // element. In that case, the bound content element will always be // a standard xml element, and not be of the right type. // The best we can do here is to create a generic svg container frame. // XXXldb This really isn't what the SVG spec says to do. #ifdef DEBUG // printf("Warning: Creating SVGGenericContainerFrame for tag <"); // nsAutoString str; // aTag->ToString(str); // printf("%s>\n", NS_ConvertUCS2toUTF8(str).get()); #endif rv = NS_NewSVGGenericContainerFrame(mPresShell, aContent, &newFrame); } // If we succeeded in creating a frame then initialize it, process its // children (if requested), and set the initial child list if (NS_SUCCEEDED(rv) && newFrame != nsnull) { #ifdef MOZ_SVG_FOREIGNOBJECT if (aTag == nsSVGAtoms::foreignObject) { // Claim to be relatively positioned so that we end up being the // absolute containing block. Also, push "null" as the floater // containing block so that we get the SPACE_MGR bit set. nsFrameConstructorSaveState saveState; aState.PushFloatContainingBlock(nsnull, saveState, PR_FALSE, PR_FALSE); const nsStyleDisplay* disp = aStyleContext->GetStyleDisplay(); rv = ConstructBlock(aState, disp, aContent, geometricParent, aParentFrame, aStyleContext, &newFrame, aFrameItems, PR_TRUE); } else #endif // MOZ_SVG_FOREIGNOBJECT { InitAndRestoreFrame(aState, aContent, geometricParent, aStyleContext, nsnull, newFrame); rv = aState.AddChild(newFrame, aFrameItems, disp, aContent, aStyleContext, aParentFrame, isOuterSVGNode, isOuterSVGNode); if (NS_FAILED(rv)) { return rv; } nsHTMLContainerFrame::CreateViewForFrame(newFrame, aParentFrame, forceView); // Process the child content if requested. nsFrameItems childItems; if (!newFrame->IsLeaf()) { if (aTag == nsSVGAtoms::svgSwitch) { rv = SVGSwitchProcessChildren(aState, aContent, newFrame, childItems); } else { rv = ProcessChildren(aState, aContent, newFrame, PR_TRUE, childItems, PR_FALSE); } } CreateAnonymousFrames(aTag, aState, aContent, newFrame, PR_FALSE, childItems); // Set the frame's initial child list newFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); } if (!newFrame->IsLeaf()) rv = CreateInsertionPointChildren(aState, newFrame, aContent); } return rv; } #endif // MOZ_SVG PRBool nsCSSFrameConstructor::PageBreakBefore(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsStyleContext* aStyleContext, nsFrameItems& aFrameItems) { const nsStyleDisplay* display = aStyleContext->GetStyleDisplay(); // See if page-break-before is set for all elements except row groups, rows, cells // (these are handled internally by tables) and construct a page break frame if so. if (NS_STYLE_DISPLAY_NONE != display->mDisplay && (NS_STYLE_DISPLAY_TABLE == display->mDisplay || !IsTableRelated(display->mDisplay, PR_TRUE))) { if (display->mBreakBefore) { ConstructPageBreakFrame(aState, aContent, aParentFrame, aStyleContext, aFrameItems); } return display->mBreakAfter; } return PR_FALSE; } nsresult nsCSSFrameConstructor::ConstructPageBreakFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsStyleContext* aStyleContext, nsFrameItems& aFrameItems) { nsRefPtr pseudoStyle; pseudoStyle = mPresShell->StyleSet()->ResolvePseudoStyleFor(nsnull, nsCSSAnonBoxes::pageBreak, aStyleContext); nsIFrame* pageBreakFrame; nsresult rv = NS_NewPageBreakFrame(mPresShell, &pageBreakFrame); if (NS_SUCCEEDED(rv)) { InitAndRestoreFrame(aState, aContent, aParentFrame, pseudoStyle, nsnull, pageBreakFrame); aFrameItems.AddChild(pageBreakFrame); } return rv; } nsresult nsCSSFrameConstructor::ConstructFrame(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsFrameItems& aFrameItems) { NS_PRECONDITION(nsnull != aParentFrame, "no parent frame"); nsresult rv = NS_OK; // don't create a whitespace frame if aParent doesn't want it if (!NeedFrameFor(aParentFrame, aContent)) { return rv; } // never create frames for comments or PIs if (aContent->IsContentOfType(nsIContent::eCOMMENT) || aContent->IsContentOfType(nsIContent::ePROCESSING_INSTRUCTION)) return rv; nsRefPtr styleContext; styleContext = ResolveStyleContext(aParentFrame, aContent); PRBool pageBreakAfter = PR_FALSE; if (aState.mPresContext->IsPaginated()) { // See if there is a page break before, if so construct one. Also see if there is one after pageBreakAfter = PageBreakBefore(aState, aContent, aParentFrame, styleContext, aFrameItems); } // construct the frame rv = ConstructFrameInternal(aState, aContent, aParentFrame, aContent->Tag(), aContent->GetNameSpaceID(), styleContext, aFrameItems, PR_FALSE); if (NS_SUCCEEDED(rv) && pageBreakAfter) { // Construct the page break after ConstructPageBreakFrame(aState, aContent, aParentFrame, styleContext, aFrameItems); } return rv; } nsresult nsCSSFrameConstructor::ConstructFrameInternal( nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aParentFrame, nsIAtom* aTag, PRInt32 aNameSpaceID, nsStyleContext* aStyleContext, nsFrameItems& aFrameItems, PRBool aXBLBaseTag) { // The following code allows the user to specify the base tag // of an element using XBL. XUL and HTML objects (like boxes, menus, etc.) // can then be extended arbitrarily. const nsStyleDisplay* display = aStyleContext->GetStyleDisplay(); nsRefPtr styleContext(aStyleContext); nsAutoEnqueueBinding binding(mDocument); if (!aXBLBaseTag) { // Ensure that our XBL bindings are installed. if (display->mBinding) { // Get the XBL loader. nsresult rv; // Load the bindings. PRBool resolveStyle; nsIXBLService * xblService = GetXBLService(); if (!xblService) return NS_ERROR_FAILURE; rv = xblService->LoadBindings(aContent, display->mBinding, PR_FALSE, getter_AddRefs(binding.mBinding), &resolveStyle); if (NS_FAILED(rv)) { if (rv != NS_ERROR_DOM_BAD_URI) { return NS_OK; } resolveStyle = PR_FALSE; } if (resolveStyle) { styleContext = ResolveStyleContext(aParentFrame, aContent); display = styleContext->GetStyleDisplay(); } nsCOMPtr baseTag; PRInt32 nameSpaceID; xblService->ResolveTag(aContent, &nameSpaceID, getter_AddRefs(baseTag)); if (baseTag != aTag || aNameSpaceID != nameSpaceID) { // Construct the frame using the XBL base tag. rv = ConstructFrameInternal(aState, aContent, aParentFrame, baseTag, nameSpaceID, styleContext, aFrameItems, PR_TRUE); return rv; } } } // Pre-check for display "none" - if we find that, don't create // any frame at all if (NS_STYLE_DISPLAY_NONE == display->mDisplay) { aState.mFrameManager->SetUndisplayedContent(aContent, styleContext); return NS_OK; } nsIFrame* adjParentFrame = aParentFrame; nsFrameItems* frameItems = &aFrameItems; PRBool pseudoParent = PR_FALSE; nsFrameConstructorSaveState pseudoSaveState; nsresult rv = AdjustParentFrame(aContent, display, aTag, aNameSpaceID, styleContext, adjParentFrame, frameItems, aState, pseudoSaveState, pseudoParent); if (NS_FAILED(rv)) { return rv; } if (aContent->IsContentOfType(nsIContent::eTEXT)) return ConstructTextFrame(aState, aContent, adjParentFrame, styleContext, *frameItems, pseudoParent); #ifdef MOZ_SVG // Don't create frames for non-SVG children of SVG elements if (aNameSpaceID != kNameSpaceID_SVG && aParentFrame && aParentFrame->IsFrameOfType(nsIFrame::eSVG) #ifdef MOZ_SVG_FOREIGNOBJECT && !aParentFrame->IsFrameOfType(nsIFrame::eSVGForeignObject) #endif ) { return NS_OK; } #endif // Style resolution can normally happen lazily. However, getting the // Visibility struct can cause |SetBidiEnabled| to be called on the // pres context, and this needs to happen before we start reflow, so // do it now, when constructing frames. See bug 115921. { styleContext->GetStyleVisibility(); } nsIFrame* lastChild = frameItems->lastChild; // Handle specific frame types rv = ConstructHTMLFrame(aState, aContent, adjParentFrame, aTag, aNameSpaceID, styleContext, *frameItems, pseudoParent); // Failing to find a matching HTML frame, try creating a specialized // XUL frame. This is temporary, pending planned factoring of this // whole process into separate, pluggable steps. if (NS_SUCCEEDED(rv) && (!frameItems->childList || lastChild == frameItems->lastChild)) { PRBool haltProcessing; rv = ConstructXULFrame(aState, aContent, adjParentFrame, aTag, aNameSpaceID, styleContext, *frameItems, aXBLBaseTag, pseudoParent, &haltProcessing); if (haltProcessing) { return rv; } } // MathML Mod - RBS #ifdef MOZ_MATHML if (NS_SUCCEEDED(rv) && (!frameItems->childList || lastChild == frameItems->lastChild)) { rv = ConstructMathMLFrame(aState, aContent, adjParentFrame, aTag, aNameSpaceID, styleContext, *frameItems, pseudoParent); } #endif // SVG #ifdef MOZ_SVG if (NS_SUCCEEDED(rv) && (!frameItems->childList || lastChild == frameItems->lastChild) && aNameSpaceID == kNameSpaceID_SVG && nsSVGUtils::SVGEnabled()) { PRBool haltProcessing; rv = ConstructSVGFrame(aState, aContent, adjParentFrame, aTag, aNameSpaceID, styleContext, *frameItems, pseudoParent, &haltProcessing); if (haltProcessing) { return rv; } } #endif // XTF #ifdef MOZ_XTF if (aNameSpaceID > kNameSpaceID_LastBuiltin && NS_SUCCEEDED(rv) && (!frameItems->childList || lastChild == frameItems->lastChild)) { nsCOMPtr xtfElem = do_QueryInterface(aContent); if (xtfElem) { if (xtfElem->GetElementType() == nsIXTFElement::ELEMENT_TYPE_GENERIC_ELEMENT) { // we don't build frames for generic elements, only for visuals // XXXbz this is bogus, really. These kids should just have // display:none, so they don't mess with pseudo-state! aState.mFrameManager->SetUndisplayedContent(aContent, styleContext); return NS_OK; } else if (xtfElem->GetElementType() != nsIXTFElement::ELEMENT_TYPE_BINDABLE) rv = ConstructXTFFrame(aState, aContent, adjParentFrame, aTag, aNameSpaceID, styleContext, *frameItems, pseudoParent); } } #endif if (NS_SUCCEEDED(rv) && (!frameItems->childList || lastChild == frameItems->lastChild)) { // When there is no explicit frame to create, assume it's a // container and let display style dictate the rest rv = ConstructFrameByDisplayType(aState, display, aContent, aNameSpaceID, aTag, adjParentFrame, styleContext, *frameItems, pseudoParent); } return rv; } inline PRBool IsRootBoxFrame(nsIFrame *aFrame) { return (aFrame->GetType() == nsLayoutAtoms::rootFrame); } nsresult nsCSSFrameConstructor::ReconstructDocElementHierarchy() { #ifdef DEBUG if (gNoisyContentUpdates) { printf("nsCSSFrameConstructor::ReconstructDocElementHierarchy\n"); } #endif nsresult rv = NS_OK; // XXXbz is that null-check needed? Why? if (mDocument && mPresShell) { nsIContent *rootContent = mDocument->GetRootContent(); if (rootContent) { // Before removing the frames associated with the content object, ask them to save their // state onto a temporary state object. CaptureStateForFramesOf(rootContent, mTempFrameTreeState); nsFrameConstructorState state(mPresShell, mFixedContainingBlock, nsnull, nsnull, mTempFrameTreeState); // Get the frame that corresponds to the document element nsIFrame* docElementFrame = state.mFrameManager->GetPrimaryFrameFor(rootContent); // Remove any existing fixed items: they are always on the // FixedContainingBlock. Note that this has to be done before we call // ClearPlaceholderFrameMap(), since RemoveFixedItems uses the // placeholder frame map. rv = RemoveFixedItems(state); if (NS_SUCCEEDED(rv)) { // Clear the hash tables that map from content to frame and out-of-flow // frame to placeholder frame state.mFrameManager->ClearPrimaryFrameMap(); state.mFrameManager->ClearPlaceholderFrameMap(); state.mFrameManager->ClearUndisplayedContentMap(); if (docElementFrame) { // Take the docElementFrame, and remove it from its parent. // XXXbz So why can't we reuse ContentRemoved? nsIFrame* docParentFrame = docElementFrame->GetParent(); NS_ASSERTION(docParentFrame, "should have a parent frame"); if (docParentFrame) { // Remove the old document element hieararchy rv = state.mFrameManager->RemoveFrame(docParentFrame, nsnull, docElementFrame); if (NS_SUCCEEDED(rv)) { // Create the new document element hierarchy nsIFrame* newChild; rv = ConstructDocElementFrame(state, rootContent, docParentFrame, &newChild); if (NS_SUCCEEDED(rv)) { rv = state.mFrameManager->InsertFrames(docParentFrame, nsnull, nsnull, newChild); } } } } } } } return rv; } nsIFrame* nsCSSFrameConstructor::GetFrameFor(nsIContent* aContent) { // Get the primary frame associated with the content nsIFrame* frame; mPresShell->GetPrimaryFrameFor(aContent, &frame); if (!frame) return nsnull; return frame->GetContentInsertionFrame(); } nsIFrame* nsCSSFrameConstructor::GetAbsoluteContainingBlock(nsIFrame* aFrame) { NS_PRECONDITION(nsnull != mInitialContainingBlock, "no initial containing block"); // Starting with aFrame, look for a frame that is absolutely positioned or // relatively positioned nsIFrame* containingBlock = nsnull; for (nsIFrame* frame = aFrame; frame && !containingBlock; frame = frame->GetParent()) { if (frame->IsFrameOfType(nsIFrame::eMathML)) { // If it's mathml, bail out -- no absolute positioning out from inside // mathml frames. Note that we don't make this part of the loop // condition because of the mInitialContainingBlock stuff at the // end of this method... return nsnull; } // Is it positioned? // If it's table-related then ignore it, because for the time // being table-related frames are not containers for absolutely // positioned child frames. const nsStyleDisplay* disp = frame->GetStyleDisplay(); if (disp->IsPositioned() && !IsTableRelated(disp->mDisplay, PR_TRUE)) { // Find the outermost wrapped block under this frame for (nsIFrame* wrappedFrame = aFrame; wrappedFrame != frame->GetParent(); wrappedFrame = wrappedFrame->GetParent()) { nsIAtom* frameType = wrappedFrame->GetType(); if (nsLayoutAtoms::areaFrame == frameType || nsLayoutAtoms::blockFrame == frameType || nsLayoutAtoms::positionedInlineFrame == frameType) { containingBlock = wrappedFrame; } else if (nsLayoutAtoms::fieldSetFrame == frameType) { // If the positioned frame is a fieldset, use the area frame inside it. // We don't use GetContentInsertionFrame for fieldsets yet. containingBlock = GetFieldSetAreaFrame(wrappedFrame); } } #ifdef DEBUG if (!containingBlock) NS_WARNING("Positioned frame that does not handle positioned kids; looking further up the parent chain"); #endif } } // If we found an absolutely positioned containing block, then use the first-in-flow. if (containingBlock) return AdjustAbsoluteContainingBlock(mPresShell->GetPresContext(), containingBlock); // If we didn't find it, then use the initial containing block if it // supports abs pos kids. return mInitialContainingBlockIsAbsPosContainer ? mInitialContainingBlock : nsnull; } nsIFrame* nsCSSFrameConstructor::GetFloatContainingBlock(nsIFrame* aFrame) { NS_PRECONDITION(mInitialContainingBlock, "no initial containing block"); // Starting with aFrame, look for a frame that is a float containing block. // IF we hit a mathml frame, bail out; we don't allow floating out of mathml // frames, because they don't seem to be able to deal. for (nsIFrame* containingBlock = aFrame; containingBlock && !containingBlock->IsFrameOfType(nsIFrame::eMathML) && !containingBlock->IsBoxFrame(); containingBlock = containingBlock->GetParent()) { if (containingBlock->IsFloatContainingBlock()) { return containingBlock; } } // If we didn't find a containing block, then there just isn't // one.... return null return nsnull; } /** * This function will check whether aContainer has :after generated content. * If so, appending to it should actually insert. The return value is the * parent to use for newly-appended content. *aAfterFrame points to the :after * frame before which appended content should go, if there is one. */ static nsIFrame* AdjustAppendParentForAfterContent(nsPresContext* aPresContext, nsIContent* aContainer, nsIFrame* aParentFrame, nsIFrame** aAfterFrame) { // See if the parent has an :after pseudo-element. Check for the presence // of style first, since nsLayoutUtils::GetAfterFrame is sorta expensive. nsStyleContext* parentStyle = aParentFrame->GetStyleContext(); if (nsLayoutUtils::HasPseudoStyle(aContainer, parentStyle, nsCSSPseudoElements::after, aPresContext)) { nsIFrame* afterFrame = nsLayoutUtils::GetAfterFrame(aParentFrame); if (afterFrame) { *aAfterFrame = afterFrame; return afterFrame->GetParent(); } } *aAfterFrame = nsnull; return aParentFrame; } /** * This function is called by ContentAppended() and ContentInserted() * when appending flowed frames to a parent's principal child list. It * handles the case where the parent frame has :after pseudo-element * generated content. */ nsresult nsCSSFrameConstructor::AppendFrames(const nsFrameConstructorState& aState, nsIContent* aContainer, nsIFrame* aParentFrame, nsIFrame* aFrameList, nsIFrame* aAfterFrame) { #ifdef DEBUG nsIFrame* debugAfterFrame; nsIFrame* debugNewParent = ::AdjustAppendParentForAfterContent(aState.mPresContext, aContainer, aParentFrame, &debugAfterFrame); NS_ASSERTION(debugNewParent == aParentFrame, "Incorrect parent"); NS_ASSERTION(debugAfterFrame == aAfterFrame, "Incorrect after frame"); #endif nsFrameManager* frameManager = aState.mFrameManager; if (aAfterFrame) { nsFrameList frames(aParentFrame->GetFirstChild(nsnull)); // Insert the frames before the :after pseudo-element. return frameManager->InsertFrames(aParentFrame, nsnull, frames.GetPrevSiblingFor(aAfterFrame), aFrameList); } return frameManager->AppendFrames(aParentFrame, nsnull, aFrameList); } /** * Find the ``rightmost'' frame for the anonymous content immediately * preceding aChild, following continuation if necessary. */ static nsIFrame* FindPreviousAnonymousSibling(nsIPresShell* aPresShell, nsIDocument* aDocument, nsIContent* aContainer, nsIContent* aChild) { NS_PRECONDITION(aDocument, "null document from content element in FindNextAnonymousSibling"); nsCOMPtr xblDoc(do_QueryInterface(aDocument)); NS_ASSERTION(xblDoc, "null xblDoc for content element in FindNextAnonymousSibling"); if (! xblDoc) return nsnull; // Grovel through the anonymous elements looking for aChild. We'll // start our search for a previous frame there. nsCOMPtr nodeList; nsCOMPtr elt(do_QueryInterface(aContainer)); xblDoc->GetAnonymousNodes(elt, getter_AddRefs(nodeList)); if (! nodeList) return nsnull; PRUint32 length; nodeList->GetLength(&length); PRInt32 index; for (index = PRInt32(length) - 1; index >= 0; --index) { nsCOMPtr node; nodeList->Item(PRUint32(index), getter_AddRefs(node)); nsCOMPtr child = do_QueryInterface(node); if (child == aChild) break; } // We want the node immediately before aChild. Keep going until we // run off the beginning of the nodeList, or we find a frame. while (--index >= 0) { nsCOMPtr node; nodeList->Item(PRUint32(index), getter_AddRefs(node)); nsCOMPtr child = do_QueryInterface(node); // Get its frame. If it doesn't have one, continue on to the // anonymous element that preceded it. nsIFrame* prevSibling; aPresShell->GetPrimaryFrameFor(child, &prevSibling); if (prevSibling) { // The frame may be a special frame (a split inline frame that // contains a block). Get the last part of that split. if (IsFrameSpecial(prevSibling)) { prevSibling = GetLastSpecialSibling(aPresShell->FrameManager(), prevSibling); } // The frame may have a continuation. If so, we want the // last-in-flow as our previous sibling. prevSibling = prevSibling->GetLastInFlow(); // If the frame is out-of-flow, GPFF() will have returned the // out-of-flow frame; we want the placeholder. const nsStyleDisplay* display = prevSibling->GetStyleDisplay(); if (display->IsFloating() || display->IsAbsolutelyPositioned()) { nsIFrame *placeholderFrame; aPresShell->GetPlaceholderFrameFor(prevSibling, &placeholderFrame); NS_ASSERTION(placeholderFrame, "no placeholder for out-of-flow frame"); prevSibling = placeholderFrame; } // Found a previous sibling, we're done! return prevSibling; } } return nsnull; } /** * Find the frame for the anonymous content immediately following * aChild. */ static nsIFrame* FindNextAnonymousSibling(nsIPresShell* aPresShell, nsIDocument* aDocument, nsIContent* aContainer, nsIContent* aChild) { NS_PRECONDITION(aDocument, "null document from content element in FindNextAnonymousSibling"); nsCOMPtr xblDoc(do_QueryInterface(aDocument)); NS_ASSERTION(xblDoc, "null xblDoc for content element in FindNextAnonymousSibling"); if (! xblDoc) return nsnull; // Grovel through the anonymous elements looking for aChild nsCOMPtr nodeList; nsCOMPtr elt(do_QueryInterface(aContainer)); xblDoc->GetAnonymousNodes(elt, getter_AddRefs(nodeList)); if (! nodeList) return nsnull; PRUint32 length; nodeList->GetLength(&length); PRInt32 index; for (index = 0; index < PRInt32(length); ++index) { nsCOMPtr node; nodeList->Item(PRUint32(index), getter_AddRefs(node)); nsCOMPtr child = do_QueryInterface(node); if (child == aChild) break; } // We want the node immediately after aChild. Keep going until we // run off the end of the nodeList, or we find a next sibling. while (++index < PRInt32(length)) { nsCOMPtr node; nodeList->Item(PRUint32(index), getter_AddRefs(node)); nsCOMPtr child = do_QueryInterface(node); // Get its frame nsIFrame* nextSibling; aPresShell->GetPrimaryFrameFor(child, &nextSibling); if (nextSibling) { // The primary frame should never be a continuation NS_ASSERTION(!nextSibling->GetPrevInFlow(), "primary frame is a continuation!?"); // If the frame is out-of-flow, GPFF() will have returned the // out-of-flow frame; we want the placeholder. const nsStyleDisplay* display = nextSibling->GetStyleDisplay(); if (display->IsFloating() || display->IsAbsolutelyPositioned()) { nsIFrame* placeholderFrame; aPresShell->GetPlaceholderFrameFor(nextSibling, &placeholderFrame); NS_ASSERTION(placeholderFrame, "no placeholder for out-of-flow frame"); nextSibling = placeholderFrame; } // Found a next sibling, we're done! return nextSibling; } } return nsnull; } #define UNSET_DISPLAY 255 // This gets called to see if the frames corresponding to aSiblingDisplay and aDisplay // should be siblings in the frame tree. Although (1) rows and cols, (2) row groups // and col groups, (3) row groups and captions (4) legends and content inside fieldsets // are siblings from a content perspective, they are not considered siblings in the // frame tree. PRBool nsCSSFrameConstructor::IsValidSibling(nsIFrame* aParentFrame, const nsIFrame& aSibling, PRUint8 aSiblingDisplay, nsIContent& aContent, PRUint8& aDisplay) { if ((NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == aSiblingDisplay) || (NS_STYLE_DISPLAY_TABLE_COLUMN == aSiblingDisplay) || (NS_STYLE_DISPLAY_TABLE_CAPTION == aSiblingDisplay) || (NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == aSiblingDisplay) || (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == aSiblingDisplay) || (NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == aSiblingDisplay)) { // if we haven't already, construct a style context to find the display type of aContent if (UNSET_DISPLAY == aDisplay) { nsRefPtr styleContext; styleContext = ResolveStyleContext(aSibling.GetParent(), &aContent); if (!styleContext) return PR_FALSE; const nsStyleDisplay* display = styleContext->GetStyleDisplay(); aDisplay = display->mDisplay; } switch (aSiblingDisplay) { case NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP: return (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == aDisplay); case NS_STYLE_DISPLAY_TABLE_COLUMN: return (NS_STYLE_DISPLAY_TABLE_COLUMN == aDisplay); case NS_STYLE_DISPLAY_TABLE_CAPTION: return (NS_STYLE_DISPLAY_TABLE_CAPTION == aDisplay); default: // all of the row group types return (NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == aDisplay) || (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == aDisplay) || (NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == aDisplay) || (NS_STYLE_DISPLAY_TABLE_CAPTION == aDisplay); } } else if (nsLayoutAtoms::fieldSetFrame == aParentFrame->GetType()) { // Legends can be sibling of legends but not of other content in the fieldset nsIAtom* sibType = aSibling.GetType(); nsCOMPtr legendContent(do_QueryInterface(&aContent)); if ((legendContent && (nsLayoutAtoms::legendFrame != sibType)) || (!legendContent && (nsLayoutAtoms::legendFrame == sibType))) return PR_FALSE; } return PR_TRUE; } /** * Find the ``rightmost'' frame for the content immediately preceding * aIndexInContainer, following continuations if necessary. */ nsIFrame* nsCSSFrameConstructor::FindPreviousSibling(nsIContent* aContainer, nsIFrame* aContainerFrame, PRInt32 aIndexInContainer, const nsIContent* aChild) { NS_ASSERTION(aContainer, "null argument"); ChildIterator first, iter; nsresult rv = ChildIterator::Init(aContainer, &first, &iter); NS_ENSURE_SUCCESS(rv, nsnull); iter.seek(aIndexInContainer); PRUint8 childDisplay = UNSET_DISPLAY; // Note: not all content objects are associated with a frame (e.g., if it's // `display: hidden') so keep looking until we find a previous frame while (iter-- != first) { nsIFrame* prevSibling = nsnull; mPresShell->GetPrimaryFrameFor(nsCOMPtr(*iter), &prevSibling); if (prevSibling) { // The frame may be a special frame (a split inline frame that // contains a block). Get the last part of that split. if (IsFrameSpecial(prevSibling)) { prevSibling = GetLastSpecialSibling(mPresShell->FrameManager(), prevSibling); } // The frame may have bidi continuations. Get the last bidi continuation if (prevSibling->GetStateBits() & NS_FRAME_IS_BIDI) { nsIFrame* nextBidi; for (;;) { nextBidi = NS_STATIC_CAST(nsIFrame*, prevSibling->GetProperty(nsLayoutAtoms::nextBidi)); if (!nextBidi) { break; } prevSibling = nextBidi; } } // The frame may have a continuation. Get the last-in-flow prevSibling = prevSibling->GetLastInFlow(); // If the frame is out-of-flow, GPFF() will have returned the // out-of-flow frame; we want the placeholder. // XXXldb Why not check NS_FRAME_OUT_OF_FLOW state bit? const nsStyleDisplay* display = prevSibling->GetStyleDisplay(); if (aChild && !IsValidSibling(aContainerFrame, *prevSibling, display->mDisplay, (nsIContent&)*aChild, childDisplay)) continue; if (display->mDisplay == NS_STYLE_DISPLAY_POPUP) { nsIFrame* placeholderFrame; mPresShell->GetPlaceholderFrameFor(prevSibling, &placeholderFrame); // XXXldb Was this supposed to be a null-check of placeholderFrame? if (prevSibling) prevSibling = placeholderFrame; } else if (display->IsFloating() || display->IsAbsolutelyPositioned()) { nsIFrame* placeholderFrame; mPresShell->GetPlaceholderFrameFor(prevSibling, &placeholderFrame); NS_ASSERTION(placeholderFrame, "no placeholder for out-of-flow frame"); prevSibling = placeholderFrame; } #ifdef DEBUG nsIFrame* containerFrame = nsnull; mPresShell->GetPrimaryFrameFor(aContainer, &containerFrame); NS_ASSERTION(prevSibling != containerFrame, "Previous Sibling is the Container's frame"); #endif // Found a previous sibling, we're done! return prevSibling; } } return nsnull; } /** * Find the frame for the content node immediately following * aIndexInContainer. */ nsIFrame* nsCSSFrameConstructor::FindNextSibling(nsIContent* aContainer, nsIFrame* aContainerFrame, PRInt32 aIndexInContainer, const nsIContent* aChild) { ChildIterator iter, last; nsresult rv = ChildIterator::Init(aContainer, &iter, &last); NS_ENSURE_SUCCESS(rv, nsnull); iter.seek(aIndexInContainer); // Catch the case where someone tries to append if (iter == last) return nsnull; PRUint8 childDisplay = UNSET_DISPLAY; while (++iter != last) { nsIFrame* nextSibling = nsnull; mPresShell->GetPrimaryFrameFor(nsCOMPtr(*iter), &nextSibling); if (nextSibling) { // The frame primary frame should never be a continuation NS_ASSERTION(!nextSibling->GetPrevInFlow(), "primary frame is a continuation!?"); // If the frame is out-of-flow, GPFF() will have returned the // out-of-flow frame; we want the placeholder. const nsStyleDisplay* display = nextSibling->GetStyleDisplay(); if (aChild && !IsValidSibling(aContainerFrame, *nextSibling, display->mDisplay, (nsIContent&)*aChild, childDisplay)) continue; if (display->IsFloating() || display->IsAbsolutelyPositioned()) { // Nope. Get the place-holder instead nsIFrame* placeholderFrame; mPresShell->GetPlaceholderFrameFor(nextSibling, &placeholderFrame); NS_ASSERTION(placeholderFrame, "no placeholder for out-of-flow frame"); nextSibling = placeholderFrame; } // We found a next sibling, we're done! return nextSibling; } } return nsnull; } inline PRBool ShouldIgnoreSelectChild(nsIContent* aContainer) { // Ignore options and optgroups inside a select (size > 1) nsIAtom *containerTag = aContainer->Tag(); if (containerTag == nsHTMLAtoms::optgroup || containerTag == nsHTMLAtoms::select) { nsIContent* selectContent = aContainer; while (containerTag != nsHTMLAtoms::select) { selectContent = selectContent->GetParent(); if (!selectContent) { break; } containerTag = selectContent->Tag(); } nsCOMPtr selectElement = do_QueryInterface(selectContent); if (selectElement) { nsAutoString selSize; aContainer->GetAttr(kNameSpaceID_None, nsHTMLAtoms::size, selSize); if (!selSize.IsEmpty()) { PRInt32 err; return (selSize.ToInteger(&err) > 1); } } } return PR_FALSE; } // For tables, returns the inner table, if the child is not a caption. // For fieldsets, returns the area frame, if the child is not a legend. static nsIFrame* GetAdjustedParentFrame(nsIFrame* aParentFrame, nsIAtom* aParentFrameType, nsIContent* aParentContent, PRInt32 aChildIndex) { nsIContent *childContent = aParentContent->GetChildAt(aChildIndex); nsIFrame* newParent = nsnull; if (nsLayoutAtoms::tableOuterFrame == aParentFrameType) { nsCOMPtr captionContent(do_QueryInterface(childContent)); // If the parent frame is an outer table, use the innner table // as the parent unless the new content is a caption. if (!captionContent) newParent = aParentFrame->GetFirstChild(nsnull); } else if (nsLayoutAtoms::fieldSetFrame == aParentFrameType) { // If the parent is a fieldSet, use the fieldSet's area frame as the // parent unless the new content is a legend. nsCOMPtr legendContent(do_QueryInterface(childContent)); if (!legendContent) { newParent = GetFieldSetAreaFrame(aParentFrame); } } return (newParent) ? newParent : aParentFrame; } nsresult nsCSSFrameConstructor::ContentAppended(nsIContent* aContainer, PRInt32 aNewIndexInContainer) { #ifdef DEBUG if (gNoisyContentUpdates) { printf("nsCSSFrameConstructor::ContentAppended container=%p index=%d\n", NS_STATIC_CAST(void*, aContainer), aNewIndexInContainer); if (gReallyNoisyContentUpdates && aContainer) { aContainer->List(stdout, 0); } } #endif #ifdef MOZ_XUL if (aContainer) { nsCOMPtr tag; PRInt32 namespaceID; mDocument->BindingManager()->ResolveTag(aContainer, &namespaceID, getter_AddRefs(tag)); // Just ignore tree tags, anyway we don't create any frames for them. if (tag == nsXULAtoms::treechildren || tag == nsXULAtoms::treeitem || tag == nsXULAtoms::treerow || (namespaceID == kNameSpaceID_XUL && gUseXBLForms && ShouldIgnoreSelectChild(aContainer))) return NS_OK; } #endif // MOZ_XUL // Get the frame associated with the content nsIFrame* parentFrame = GetFrameFor(aContainer); if (! parentFrame) return NS_OK; // See if we have an XBL insertion point. If so, then that's our // real parent frame; if not, then the frame hasn't been built yet // and we just bail. // nsIFrame* insertionPoint; PRBool multiple = PR_FALSE; GetInsertionPoint(parentFrame, nsnull, &insertionPoint, &multiple); if (! insertionPoint) return NS_OK; // Don't build the frames. PRBool hasInsertion = PR_FALSE; if (!multiple) { nsIBindingManager *bindingManager = nsnull; nsIDocument* document = nsnull; nsIContent *firstAppendedChild = aContainer->GetChildAt(aNewIndexInContainer); if (firstAppendedChild) { document = firstAppendedChild->GetDocument(); } if (document) bindingManager = document->BindingManager(); if (bindingManager) { nsCOMPtr insParent; bindingManager->GetInsertionParent(firstAppendedChild, getter_AddRefs(insParent)); if (insParent) hasInsertion = PR_TRUE; } } if (multiple || hasInsertion) { // We have an insertion point. There are some additional tests we need to do // in order to ensure that an append is a safe operation. PRUint32 childCount = 0; if (!multiple) { // We may need to make multiple ContentInserted calls instead. A // reasonable heuristic to employ (in order to maintain good performance) // is to find out if the insertion point's content node contains any // explicit children. If it does not, then it is highly likely that // an append is occurring. (Note it is not definite, and there are insane // cases we will not deal with by employing this heuristic, but it beats // always falling back to multiple ContentInserted calls). // // In the multiple insertion point case, we know we're going to need to do // multiple ContentInserted calls anyway. childCount = insertionPoint->GetContent()->GetChildCount(); } if (multiple || childCount > 0) { // Now comes the fun part. For each appended child, we must obtain its // insertion point and find its exact position within that insertion point. // We then make a ContentInserted call with the correct computed index. nsIContent* insertionContent = insertionPoint->GetContent(); PRUint32 containerCount = aContainer->GetChildCount(); for (PRUint32 i = aNewIndexInContainer; i < containerCount; i++) { nsIContent *child = aContainer->GetChildAt(i); if (multiple) { // Filters are in effect, so the insertion point needs to be refetched for // each child. GetInsertionPoint(parentFrame, child, &insertionPoint); if (!insertionPoint) { // This content node doesn't have an insertion point, so we just // skip over it continue; } insertionContent = insertionPoint->GetContent(); } // Construct an iterator to locate this child at its correct index. ChildIterator iter, last; for (ChildIterator::Init(insertionContent, &iter, &last); iter != last; ++iter) { nsIContent* item = nsCOMPtr(*iter); if (item == child) // Call ContentInserted with this index. ContentInserted(aContainer, nsnull, child, iter.index(), mTempFrameTreeState, PR_FALSE); } } return NS_OK; } } parentFrame = insertionPoint; if (parentFrame->GetType() == nsLayoutAtoms::frameSetFrame) { // Just reframe the parent, since framesets are weird like that. return RecreateFramesForContent(parentFrame->GetContent()); } if (parentFrame->IsLeaf()) { // Nothing to do here; we shouldn't be constructing kids of leaves return NS_OK; } // If the frame we are manipulating is a ``special'' frame (that // is, one that's been created as a result of a block-in-inline // situation) then do something different instead of just // appending newly created frames. Note that only the // first-in-flow is marked so we check before getting to the // last-in-flow. // // We run into this situation occasionally while loading web // pages, typically when some content generation tool has // sprinkled invalid markup into the document. More often than // not, we'll be able to just use the normal fast-path frame // construction code, because the frames will be appended to the // ``anonymous'' block that got created to parent the block // children of the inline. if (IsFrameSpecial(parentFrame)) { #ifdef DEBUG if (gNoisyContentUpdates) { printf("nsCSSFrameConstructor::ContentAppended: parentFrame="); nsFrame::ListTag(stdout, parentFrame); printf(" is special\n"); } #endif // Since we're appending, we'll walk to the last anonymous frame // that was created for the broken inline frame. nsFrameManager *frameManager = mPresShell->FrameManager(); while (1) { nsIFrame* sibling; GetSpecialSibling(frameManager, parentFrame, &sibling); if (! sibling) break; parentFrame = sibling; } // If this frame is the anonymous block frame, then all's well: // just append frames as usual. const nsStyleDisplay* display = parentFrame->GetStyleDisplay(); if (NS_STYLE_DISPLAY_BLOCK != display->mDisplay) { // Nope, it's an inline, so just reframe the entire stinkin' mess if the // content is a block. We _could_ do better here with a little more work... // find out if the child is a block or inline, an inline means we don't have to reframe nsIContent *child = aContainer->GetChildAt(aNewIndexInContainer); PRBool needReframe = !child; if (child && child->IsContentOfType(nsIContent::eELEMENT)) { nsRefPtr styleContext; styleContext = ResolveStyleContext(parentFrame, child); // XXX since the block child goes in the last inline of the sacred triad, frames would // need to be moved into the 2nd triad (block) but that is more work, for now bail. needReframe = styleContext->GetStyleDisplay()->IsBlockLevel(); } if (needReframe) return ReframeContainingBlock(parentFrame); } } // Get the parent frame's last-in-flow parentFrame = parentFrame->GetLastInFlow(); nsIAtom* frameType = parentFrame->GetType(); // Deal with inner/outer tables, fieldsets parentFrame = ::GetAdjustedParentFrame(parentFrame, frameType, aContainer, aNewIndexInContainer); // Deal with possible :after generated content on the parent nsIFrame* parentAfterFrame; parentFrame = ::AdjustAppendParentForAfterContent(mPresShell->GetPresContext(), aContainer, parentFrame, &parentAfterFrame); // Create some new frames PRUint32 count; nsIFrame* firstAppendedFrame = nsnull; nsFrameItems frameItems; nsFrameConstructorState state(mPresShell, mFixedContainingBlock, GetAbsoluteContainingBlock(parentFrame), GetFloatContainingBlock(parentFrame)); // See if the containing block has :first-letter style applied. PRBool haveFirstLetterStyle = PR_FALSE, haveFirstLineStyle = PR_FALSE; nsIFrame* containingBlock = state.mFloatedItems.containingBlock; if (containingBlock) { haveFirstLetterStyle = HaveFirstLetterStyle(containingBlock); haveFirstLineStyle = HaveFirstLineStyle(containingBlock->GetContent(), containingBlock->GetStyleContext()); } if (haveFirstLetterStyle) { // Before we get going, remove the current letter frames RemoveLetterFrames(state.mPresContext, state.mPresShell, state.mFrameManager, containingBlock); } // if the container is a table and a caption was appended, it needs to be put in // the outer table frame's additional child list. nsFrameItems captionItems; PRUint32 i; count = aContainer->GetChildCount(); for (i = aNewIndexInContainer; i < count; i++) { nsIContent *childContent = aContainer->GetChildAt(i); // lookup the table child frame type as it is much more difficult to remove a frame // and all it descendants (abs. pos. for instance) than to prevent the frame creation. if (nsLayoutAtoms::tableFrame == frameType) { nsFrameItems tempItems; ConstructFrame(state, childContent, parentFrame, tempItems); if (tempItems.childList) { if (nsLayoutAtoms::tableCaptionFrame == tempItems.childList->GetType()) { captionItems.AddChild(tempItems.childList); } else { frameItems.AddChild(tempItems.childList); } } } else if (nsLayoutAtoms::tableColGroupFrame == frameType) { nsRefPtr childStyleContext; childStyleContext = ResolveStyleContext(parentFrame, childContent); if (childStyleContext->GetStyleDisplay()->mDisplay != NS_STYLE_DISPLAY_TABLE_COLUMN) continue; //don't create anything else than columns below a colgroup ConstructFrame(state, childContent, parentFrame, frameItems); } // Don't create child frames for iframes/frames, they should not // display any content that they contain. else if (nsLayoutAtoms::subDocumentFrame != frameType) { // Construct a child frame (that does not have a table as parent) ConstructFrame(state, childContent, parentFrame, frameItems); } } // process the current pseudo frame state if (!state.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(state, frameItems); } if (haveFirstLineStyle) { // It's possible that some of the new frames go into a // first-line frame. Look at them and see... AppendFirstLineFrames(state, aContainer, parentFrame, frameItems); } nsresult result = NS_OK; firstAppendedFrame = frameItems.childList; if (!firstAppendedFrame) { firstAppendedFrame = captionItems.childList; } // Notify the parent frame passing it the list of new frames if (NS_SUCCEEDED(result) && firstAppendedFrame) { // Perform special check for diddling around with the frames in // a special inline frame. // XXX Bug 18366 // Although select frame are inline we do not want to call // WipeContainingBlock because it will throw away the entire selct frame and // start over which is something we do not want to do // nsCOMPtr selectContent(do_QueryInterface(aContainer)); if (!selectContent) { if (WipeContainingBlock(state, containingBlock, parentFrame, frameItems.childList)) { return NS_OK; } } // Append the flowed frames to the principal child list, tables need special treatment if (nsLayoutAtoms::tableFrame == frameType) { if (captionItems.childList) { // append the caption to the outer table nsIFrame* outerTable = parentFrame->GetParent(); if (outerTable) { state.mFrameManager->AppendFrames(outerTable, nsLayoutAtoms::captionList, captionItems.childList); } } if (frameItems.childList) { // append children of the inner table AppendFrames(state, aContainer, parentFrame, frameItems.childList, parentAfterFrame); } } else { AppendFrames(state, aContainer, parentFrame, firstAppendedFrame, parentAfterFrame); } // Recover first-letter frames if (haveFirstLetterStyle) { RecoverLetterFrames(state, containingBlock); } } // Here we have been notified that content has been appended so if // the select now has a single item we need to go in and removed // the dummy frame. nsCOMPtr sel(do_QueryInterface(aContainer)); if (sel) { nsIContent *childContent = aContainer->GetChildAt(aNewIndexInContainer); if (childContent) { RemoveDummyFrameFromSelect(aContainer, childContent, sel); } } #ifdef DEBUG if (gReallyNoisyContentUpdates) { nsIFrameDebug* fdbg = nsnull; CallQueryInterface(parentFrame, &fdbg); if (fdbg) { printf("nsCSSFrameConstructor::ContentAppended: resulting frame model:\n"); fdbg->List(state.mPresContext, stdout, 0); } } #endif return NS_OK; } nsresult nsCSSFrameConstructor::AddDummyFrameToSelect(nsFrameConstructorState& aState, nsIFrame* aListFrame, nsIFrame* aParentFrame, nsFrameItems* aChildItems, nsIContent* aContainer, nsIDOMHTMLSelectElement* aSelectElement) { PRUint32 numOptions = 0; nsresult rv = aSelectElement->GetLength(&numOptions); if (NS_SUCCEEDED(rv) && 0 == numOptions) { nsISelectControlFrame* listFrame = nsnull; CallQueryInterface(aListFrame, &listFrame); if (listFrame) { nsIFrame* dummyFrame; listFrame->GetDummyFrame(&dummyFrame); if (!dummyFrame) { nsStyleContext* styleContext = aParentFrame->GetStyleContext(); nsIFrame* generatedFrame = nsnull; if (CreateGeneratedContentFrame(aState, aParentFrame, aContainer, styleContext, nsCSSAnonBoxes::dummyOption, &generatedFrame)) { // Add the generated frame to the child list if (aChildItems) { aChildItems->AddChild(generatedFrame); } else { aState.mFrameManager->AppendFrames(aParentFrame, nsnull, generatedFrame); } listFrame->SetDummyFrame(generatedFrame); return NS_OK; } } } } return NS_ERROR_FAILURE; } nsresult nsCSSFrameConstructor::RemoveDummyFrameFromSelect(nsIContent* aContainer, nsIContent* aChild, nsIDOMHTMLSelectElement * aSelectElement) { // Check to see if this is the first thing we have added to this frame. PRUint32 numOptions = 0; nsresult rv = aSelectElement->GetLength(&numOptions); if (NS_SUCCEEDED(rv) && numOptions > 0) { nsIFrame* frame; mPresShell->GetPrimaryFrameFor(aContainer, &frame); if (frame) { nsISelectControlFrame* listFrame = nsnull; CallQueryInterface(frame, &listFrame); if (listFrame) { nsIFrame* dummyFrame; listFrame->GetDummyFrame(&dummyFrame); if (dummyFrame) { listFrame->SetDummyFrame(nsnull); // get the child's parent frame (which ought to be the list frame) nsIFrame* parentFrame = dummyFrame->GetParent(); nsFrameManager *frameManager = mPresShell->FrameManager(); ::DeletingFrameSubtree(mPresShell->GetPresContext(), frameManager, dummyFrame); frameManager->RemoveFrame(parentFrame, nsnull, dummyFrame); return NS_OK; } } } } return NS_ERROR_FAILURE; } // Return TRUE if the insertion of aChild into aParent1,2 should force a reframe. aParent1 is // the special inline container which contains a block. aParentFrame is approximately aParent1's // primary frame and will be set to the correct parent of aChild if a reframe is not necessary. // aParent2 is aParentFrame's content. aPrevSibling will be set to the correct prev sibling of // aChild if a reframe is not necessary. PRBool nsCSSFrameConstructor::NeedSpecialFrameReframe(nsIContent* aParent1, nsIContent* aParent2, nsIFrame*& aParentFrame, nsIContent* aChild, PRInt32 aIndexInContainer, nsIFrame*& aPrevSibling, nsIFrame* aNextSibling) { // XXXbz aNextSibling is utterly unused. Why? if (!IsInlineFrame2(aParentFrame)) return PR_FALSE; // find out if aChild is a block or inline PRBool childIsBlock = PR_FALSE; if (aChild->IsContentOfType(nsIContent::eELEMENT)) { nsRefPtr styleContext; styleContext = ResolveStyleContext(aParentFrame, aChild); const nsStyleDisplay* display = styleContext->GetStyleDisplay(); childIsBlock = display->IsBlockLevel() || IsTableRelated(display->mDisplay, PR_TRUE); } nsIFrame* prevParent; // parent of prev sibling nsIFrame* nextParent; // parent of next sibling if (childIsBlock) { if (aPrevSibling) { prevParent = aPrevSibling->GetParent(); NS_ASSERTION(prevParent, "program error - null parent frame"); if (IsInlineFrame2(prevParent)) { // prevParent is an inline // XXX we need to find out if prevParent is the 1st inline or the last. If it // is the 1st, then aChild and the frames after aPrevSibling within the 1st inline // need to be moved to the block(inline). If it is the last, then aChild and the // frames before aPrevSibling within the last need to be moved to the block(inline). return PR_TRUE; // For now, bail. } aParentFrame = prevParent; // prevParent is a block, put aChild there } else { // XXXbz see comments in ContentInserted about this being wrong in many // cases! Why doesn't this just use aNextSibling anyway? Why are we // looking sometimes in aParent1 and sometimes in aParent2? nsIFrame* nextSibling = (aIndexInContainer >= 0) ? FindNextSibling(aParent2, aParentFrame, aIndexInContainer) : FindNextAnonymousSibling(mPresShell, mDocument, aParent1, aChild); if (nextSibling) { nextParent = nextSibling->GetParent(); NS_ASSERTION(nextParent, "program error - null parent frame"); if (IsInlineFrame2(nextParent)) { // XXX we need to move aChild, aNextSibling and all the frames after aNextSibling within // the 1st inline to the block(inline). return PR_TRUE; // for now, bail } // put aChild in nextParent which is the block(inline) and leave aPrevSibling null aParentFrame = nextParent; } } } else { // aChild is an inline if (aPrevSibling) { prevParent = aPrevSibling->GetParent(); NS_ASSERTION(prevParent, "program error - null parent frame"); if (IsInlineFrame2(prevParent)) { // prevParent is an inline // aChild goes into the same inline frame as aPrevSibling aParentFrame = aPrevSibling->GetParent(); NS_ASSERTION(aParentFrame, "program error - null parent frame"); } else { // prevParent is a block // XXXbz see comments in ContentInserted about this being wrong in many // cases! Why doesn't this just use aNextSibling anyway? Why are we // looking sometimes in aParent1 and sometimes in aParent2? nsIFrame* nextSibling = (aIndexInContainer >= 0) ? FindNextSibling(aParent2, aParentFrame, aIndexInContainer) : FindNextAnonymousSibling(mPresShell, mDocument, aParent1, aChild); if (nextSibling) { nextParent = nextSibling->GetParent(); NS_ASSERTION(nextParent, "program error - null parent frame"); if (IsInlineFrame2(nextParent)) { // nextParent is the ending inline frame. Put aChild there and // set aPrevSibling to null so aChild is its first element. aParentFrame = nextSibling->GetParent(); NS_ASSERTION(aParentFrame, "program error - null parent frame"); aPrevSibling = nsnull; } else { // nextParent is a block // prevParent and nextParent should be the same, and aChild goes there NS_ASSERTION(prevParent == nextParent, "special frame error"); aParentFrame = prevParent; } } else { // there is no ending enline frame (which should never happen) but aChild needs to go // there, so for now just bail and force a reframe. NS_ASSERTION(PR_FALSE, "no last inline frame"); return PR_TRUE; } } } // else aChild goes into the 1st inline frame which is aParentFrame } return PR_FALSE; } #ifdef MOZ_XUL enum content_operation { CONTENT_INSERTED, CONTENT_REMOVED }; // Helper function to lookup the listbox body frame and send a notification // for insertion or removal of content static PRBool NotifyListBoxBody(nsPresContext* aPresContext, nsIContent* aContainer, nsIContent* aChild, PRInt32 aIndexInContainer, nsIDocument* aDocument, nsIFrame* aChildFrame, PRBool aUseXBLForms, content_operation aOperation) { if (!aContainer) return PR_FALSE; if (aContainer->IsContentOfType(nsIContent::eXUL) && aChild->IsContentOfType(nsIContent::eXUL) && aContainer->Tag() == nsXULAtoms::listbox && aChild->Tag() == nsXULAtoms::listitem) { nsCOMPtr xulElement = do_QueryInterface(aContainer); nsCOMPtr boxObject; xulElement->GetBoxObject(getter_AddRefs(boxObject)); nsCOMPtr listBoxObject = do_QueryInterface(boxObject); if (listBoxObject) { nsIListBoxObject* listboxBody = listBoxObject->GetListBoxBody(PR_FALSE); if (listboxBody) { nsListBoxBodyFrame *listBoxBodyFrame = NS_STATIC_CAST(nsListBoxBodyFrame*, listboxBody); if (aOperation == CONTENT_REMOVED) { // Except if we have an aChildFrame and its parent is not the right // thing, then we don't do this. Pseudo frames are so much fun.... if (!aChildFrame || aChildFrame->GetParent() == listBoxBodyFrame) { listBoxBodyFrame->OnContentRemoved(aPresContext, aChildFrame, aIndexInContainer); return PR_TRUE; } } else { listBoxBodyFrame->OnContentInserted(aPresContext, aChild); return PR_TRUE; } } } } nsCOMPtr tag; PRInt32 namespaceID; aDocument->BindingManager()->ResolveTag(aContainer, &namespaceID, getter_AddRefs(tag)); // Just ignore tree tags, anyway we don't create any frames for them. if (aContainer->GetParent() && (tag == nsXULAtoms::treechildren || tag == nsXULAtoms::treeitem || tag == nsXULAtoms::treerow || (namespaceID == kNameSpaceID_XUL && aUseXBLForms && ShouldIgnoreSelectChild(aContainer)))) return PR_TRUE; return PR_FALSE; } #endif // MOZ_XUL nsresult nsCSSFrameConstructor::ContentInserted(nsIContent* aContainer, nsIFrame* aContainerFrame, nsIContent* aChild, PRInt32 aIndexInContainer, nsILayoutHistoryState* aFrameState, PRBool aInReinsertContent) { // XXXldb Do we need to re-resolve style to handle the CSS2 + combinator and // the :empty pseudo-class? #ifdef DEBUG if (gNoisyContentUpdates) { printf("nsCSSFrameConstructor::ContentInserted container=%p child=%p index=%d\n", NS_STATIC_CAST(void*, aContainer), NS_STATIC_CAST(void*, aChild), aIndexInContainer); if (gReallyNoisyContentUpdates) { (aContainer ? aContainer : aChild)->List(stdout, 0); } } #endif nsresult rv = NS_OK; #ifdef MOZ_XUL if (NotifyListBoxBody(mPresShell->GetPresContext(), aContainer, aChild, aIndexInContainer, mDocument, nsnull, gUseXBLForms, CONTENT_INSERTED)) return NS_OK; #endif // MOZ_XUL // If we have a null parent, then this must be the document element // being inserted if (! aContainer) { nsIContent *docElement = mDocument->GetRootContent(); if (aChild == docElement) { NS_PRECONDITION(nsnull == mInitialContainingBlock, "initial containing block already created"); if (!mDocElementContainingBlock) return NS_OK; // We get into this situation when an XBL binding is asynchronously // applied to the root tag (e.g., in XUL). It's ok. We can // just bail here because the root will really be built later during // InitialReflow. // Create frames for the document element and its child elements nsIFrame* docElementFrame; nsFrameConstructorState state(mPresShell, mFixedContainingBlock, nsnull, nsnull, aFrameState); ConstructDocElementFrame(state, docElement, mDocElementContainingBlock, &docElementFrame); if (mDocElementContainingBlock->GetStateBits() & NS_FRAME_FIRST_REFLOW) { // Set the initial child list for the parent and wait on the initial // reflow. mDocElementContainingBlock->SetInitialChildList(state.mPresContext, nsnull, docElementFrame); } else { // Whoops, we've already received our initial reflow! Insert the doc. // element as a child so it reflows (note that containing block is // empty, so we can simply append). NS_ASSERTION(mDocElementContainingBlock->GetFirstChild(nsnull) == nsnull, "Unexpected child of document element containing block"); mDocElementContainingBlock->AppendFrames(nsnull, docElementFrame); } #ifdef DEBUG if (gReallyNoisyContentUpdates && docElementFrame) { nsIFrameDebug* fdbg = nsnull; CallQueryInterface(docElementFrame, &fdbg); if (fdbg) { printf("nsCSSFrameConstructor::ContentInserted: resulting frame model:\n"); fdbg->List(state.mPresContext, stdout, 0); } } #endif } // otherwise this is not a child of the root element, and we // won't let it have a frame. return NS_OK; } // Otherwise, we've got parent content. Find its frame. nsIFrame* parentFrame = aContainerFrame; if (!parentFrame) { parentFrame = GetFrameFor(aContainer); if (! parentFrame) return NS_OK; // XXXwaterson will this break selects? (See ``Here // we have been notified...'' below.) } // See if we have an XBL insertion point. If so, then that's our // real parent frame; if not, then the frame hasn't been built yet // and we just bail. nsIFrame* insertionPoint; GetInsertionPoint(parentFrame, aChild, &insertionPoint); if (! insertionPoint) return NS_OK; // Don't build the frames. parentFrame = insertionPoint; // Find the frame that precedes the insertion point. Walk backwards // from the parent frame to get the parent content, because if an // XBL insertion point is involved, we'll need to use _that_ to find // the preceding frame. nsIContent* container = parentFrame->GetContent(); // XXX if the insertionPoint was different from the original // parentFrame, then aIndexInContainer is most likely completely // wrong. What we need to do here is remember the original index, // then as we insert, search the child list where we're about to put // the new frame to make sure that it appears after any siblings // with a lower index, and before any siblings with a higher // index. Same with FindNextSibling(), below. nsIFrame* prevSibling = (aIndexInContainer >= 0) ? FindPreviousSibling(container, parentFrame, aIndexInContainer, aChild) : FindPreviousAnonymousSibling(mPresShell, mDocument, aContainer, aChild); PRBool isAppend = PR_FALSE; nsIFrame* appendAfterFrame; // This is only looked at when isAppend is true nsIFrame* nextSibling = nsnull; // If there is no previous sibling, then find the frame that follows if (! prevSibling) { nextSibling = (aIndexInContainer >= 0) ? FindNextSibling(container, parentFrame, aIndexInContainer, aChild) : FindNextAnonymousSibling(mPresShell, mDocument, aContainer, aChild); } PRBool handleSpecialFrame = IsFrameSpecial(parentFrame) && !aInReinsertContent; // Now, find the geometric parent so that we can handle // continuations properly. Use the prev sibling if we have it; // otherwise use the next sibling. if (prevSibling) { if (!handleSpecialFrame) parentFrame = prevSibling->GetParent(); } else if (nextSibling) { if (!handleSpecialFrame) parentFrame = nextSibling->GetParent(); } else { // No previous or next sibling, so treat this like an appended frame. isAppend = PR_TRUE; // Deal with inner/outer tables, fieldsets parentFrame = ::GetAdjustedParentFrame(parentFrame, parentFrame->GetType(), aContainer, aIndexInContainer); parentFrame = ::AdjustAppendParentForAfterContent(mPresShell->GetPresContext(), aContainer, parentFrame, &appendAfterFrame); } if (parentFrame->GetType() == nsLayoutAtoms::frameSetFrame) { // Just reframe the parent, since framesets are weird like that. return RecreateFramesForContent(parentFrame->GetContent()); } // Don't construct kids of leaves if (parentFrame->IsLeaf()) { return NS_OK; } // If the frame we are manipulating is a special frame then see if we need to reframe // NOTE: if we are in ReinsertContent, then don't reframe as we are already doing just that! if (handleSpecialFrame) { // a special inline frame has propagated some of its children upward to be children // of the block and those frames may need to move around. Sometimes we may need to reframe #ifdef DEBUG if (gNoisyContentUpdates) { printf("nsCSSFrameConstructor::ContentInserted: parentFrame="); nsFrame::ListTag(stdout, parentFrame); printf(" is special\n"); } #endif // if we don't need to reframe then set parentFrame and prevSibling to the correct values if (NeedSpecialFrameReframe(aContainer, container, parentFrame, aChild, aIndexInContainer, prevSibling, nextSibling)) { return ReframeContainingBlock(parentFrame); } } nsFrameConstructorState state(mPresShell, mFixedContainingBlock, GetAbsoluteContainingBlock(parentFrame), GetFloatContainingBlock(parentFrame), aFrameState); // Recover state for the containing block - we need to know if // it has :first-letter or :first-line style applied to it. The // reason we care is that the internal structure in these cases // is not the normal structure and requires custom updating // logic. nsIFrame* containingBlock = state.mFloatedItems.containingBlock; nsStyleContext* blockSC; nsIContent* blockContent = nsnull; PRBool haveFirstLetterStyle = PR_FALSE; PRBool haveFirstLineStyle = PR_FALSE; // In order to shave off some cycles, we only dig up the // containing block haveFirst* flags if the parent frame where // the insertion/append is occuring is an inline or block // container. For other types of containers this isn't relevant. const nsStyleDisplay* parentDisplay = parentFrame->GetStyleDisplay(); // Examine the parentFrame where the insertion is taking // place. If its a certain kind of container then some special // processing is done. if ((NS_STYLE_DISPLAY_BLOCK == parentDisplay->mDisplay) || (NS_STYLE_DISPLAY_LIST_ITEM == parentDisplay->mDisplay) || (NS_STYLE_DISPLAY_INLINE == parentDisplay->mDisplay) || (NS_STYLE_DISPLAY_INLINE_BLOCK == parentDisplay->mDisplay)) { // Recover the special style flags for the containing block if (containingBlock) { haveFirstLetterStyle = HaveFirstLetterStyle(containingBlock); haveFirstLineStyle = HaveFirstLineStyle(containingBlock->GetContent(), containingBlock->GetStyleContext()); } if (haveFirstLetterStyle) { // Get the correct parentFrame and prevSibling - if a // letter-frame is present, use its parent. if (parentFrame->GetType() == nsLayoutAtoms::letterFrame) { parentFrame = parentFrame->GetParent(); container = parentFrame->GetContent(); } // Remove the old letter frames before doing the insertion RemoveLetterFrames(state.mPresContext, mPresShell, state.mFrameManager, state.mFloatedItems.containingBlock); // Removing the letterframes messes around with the frame tree, removing // and creating frames. We need to reget our prevsibling. // See XXX comment the first time we do this in this method.... prevSibling = (aIndexInContainer >= 0) ? FindPreviousSibling(container, parentFrame, aIndexInContainer, aChild) : FindPreviousAnonymousSibling(mPresShell, mDocument, aContainer, aChild); // If there is no previous sibling, then find the frame that follows if (! prevSibling) { nextSibling = (aIndexInContainer >= 0) ? FindNextSibling(container, parentFrame, aIndexInContainer, aChild) : FindNextAnonymousSibling(mPresShell, mDocument, aContainer, aChild); } handleSpecialFrame = IsFrameSpecial(parentFrame) && !aInReinsertContent; if (handleSpecialFrame && NeedSpecialFrameReframe(aContainer, container, parentFrame, aChild, aIndexInContainer, prevSibling, nextSibling)) { #ifdef DEBUG nsIContent* parentContainer = blockContent->GetParent(); if (gNoisyContentUpdates) { printf("nsCSSFrameConstructor::ContentInserted: parentFrame="); nsFrame::ListTag(stdout, parentFrame); printf(" is special inline\n"); printf(" ==> blockContent=%p, parentContainer=%p\n", NS_STATIC_CAST(void*, blockContent), NS_STATIC_CAST(void*, parentContainer)); } #endif NS_ASSERTION(GetFloatContainingBlock(parentFrame) == containingBlock, "Unexpected block ancestor for parentFrame"); // Note that in this case we're guaranteed that the closest block // containing parentFrame is |containingBlock|. So // ReframeContainingBlock(parentFrame) will make sure to rebuild the // first-letter stuff we just blew away. return ReframeContainingBlock(parentFrame); } } } else if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == parentDisplay->mDisplay) { nsRefPtr childStyleContext; childStyleContext = ResolveStyleContext(parentFrame, aChild); if (childStyleContext->GetStyleDisplay()->mDisplay != NS_STYLE_DISPLAY_TABLE_COLUMN) return NS_OK; //don't create anything else than columns below a colgroup } // if the container is a table and a caption will be appended, it needs to be // put in the outer table frame's additional child list. nsFrameItems frameItems, captionItems; ConstructFrame(state, aChild, parentFrame, frameItems); if (frameItems.childList) { if (nsLayoutAtoms::tableCaptionFrame == frameItems.childList->GetType()) { NS_ASSERTION(frameItems.childList == frameItems.lastChild , "adding a non caption frame to the caption childlist?"); captionItems.AddChild(frameItems.childList); frameItems = nsFrameItems(); } } // process the current pseudo frame state if (!state.mPseudoFrames.IsEmpty()) ProcessPseudoFrames(state, frameItems); // If the final parent frame (decided by AdjustParentFrame()) is different // from the parent of the insertion point we calculated above then // parentFrame/prevSibling/appendAfterFrame are now invalid and as it is // unknown where to insert correctly we append instead (bug 341858). if (frameItems.childList && frameItems.childList->GetParent() != parentFrame) { prevSibling = nsnull; isAppend = PR_TRUE; parentFrame = ::AdjustAppendParentForAfterContent(mPresShell->GetPresContext(), aContainer, frameItems.childList->GetParent(), &appendAfterFrame); } // XXX Bug 19949 // Although select frame are inline we do not want to call // WipeContainingBlock because it will throw away the entire select frame and // start over which is something we do not want to do // nsCOMPtr selectContent = do_QueryInterface(aContainer); if (!selectContent) { // Perform special check for diddling around with the frames in // a special inline frame. if (WipeContainingBlock(state, containingBlock, parentFrame, frameItems.childList)) return NS_OK; } if (haveFirstLineStyle) { // It's possible that the new frame goes into a first-line // frame. Look at it and see... if (isAppend) { // Use append logic when appending AppendFirstLineFrames(state, aContainer, parentFrame, frameItems); } else { // Use more complicated insert logic when inserting InsertFirstLineFrames(state, aContainer, containingBlock, &parentFrame, prevSibling, frameItems); } } nsIFrame* newFrame = frameItems.childList; if (NS_SUCCEEDED(rv) && newFrame) { NS_ASSERTION(!captionItems.childList, "leaking caption frames"); // Notify the parent frame if (isAppend) { AppendFrames(state, aContainer, parentFrame, newFrame, appendAfterFrame); } else { if (!prevSibling) { // We're inserting the new frame as the first child. See if the // parent has a :before pseudo-element nsIFrame* firstChild = parentFrame->GetFirstChild(nsnull); if (firstChild && nsLayoutUtils::IsGeneratedContentFor(aContainer, firstChild, nsCSSPseudoElements::before)) { // Insert the new frames after the :before pseudo-element prevSibling = firstChild; } } state.mFrameManager->InsertFrames(parentFrame, nsnull, prevSibling, newFrame); } if (haveFirstLetterStyle) { // Recover the letter frames for the containing block when // it has first-letter style. RecoverLetterFrames(state, state.mFloatedItems.containingBlock); } } else { // we might have a caption treat it here nsIFrame* newCaptionFrame = captionItems.childList; if (NS_SUCCEEDED(rv) && newCaptionFrame) { nsIFrame* outerTableFrame; if (GetCaptionAdjustedParent(parentFrame, newCaptionFrame, &outerTableFrame)) { // If the parent is not a outer table frame we will try to add frames // to a named child list that the parent does not honour and the frames // will get lost NS_ASSERTION(nsLayoutAtoms::tableOuterFrame == outerTableFrame->GetType(), "Pseudo frame construction failure, a caption can be only a child of a outer table frame"); if (isAppend) { state.mFrameManager->AppendFrames(outerTableFrame, nsLayoutAtoms::captionList, newCaptionFrame); } else { state.mFrameManager->InsertFrames(outerTableFrame, nsLayoutAtoms::captionList, prevSibling, newCaptionFrame); } } } } // Here we have been notified that content has been insert // so if the select now has a single item // we need to go in and removed the dummy frame nsCOMPtr selectElement = do_QueryInterface(aContainer); if (selectElement) RemoveDummyFrameFromSelect(aContainer, aChild, selectElement); #ifdef DEBUG if (gReallyNoisyContentUpdates && parentFrame) { nsIFrameDebug* fdbg = nsnull; CallQueryInterface(parentFrame, &fdbg); if (fdbg) { printf("nsCSSFrameConstructor::ContentInserted: resulting frame model:\n"); fdbg->List(state.mPresContext, stdout, 0); } } #endif return NS_OK; } nsresult nsCSSFrameConstructor::ReinsertContent(nsIContent* aContainer, nsIContent* aChild) { PRInt32 ix = aContainer->IndexOf(aChild); // XXX For now, do a brute force remove and insert. nsresult res = ContentRemoved(aContainer, aChild, ix, PR_TRUE); if (NS_SUCCEEDED(res)) { res = ContentInserted(aContainer, nsnull, aChild, ix, nsnull, PR_TRUE); } return res; } /** * Called when a frame subtree is about to be deleted. Two important * things happen: * * 1. For each frame in the subtree, we remove the mapping from the * content object to its frame * * 2. For child frames that have been moved out of the flow, we * enqueue the out-of-frame for deletion *if* the out-of-flow frame's * geometric parent is not in |aRemovedFrame|'s hierarchy (e.g., an * absolutely positioned element that has been promoted to be a direct * descendant of an area frame). * * Note: this function should only be called by DeletingFrameSubtree() * * @param aRemovedFrame this is the frame that was removed from the * content model. As we recurse we need to remember this so we * can check if out-of-flow frames are a descendent of the frame * being removed * @param aFrame the local subtree that is being deleted. This is initially * the same as aRemovedFrame, but as we recurse down the tree * this changes */ static nsresult DoDeletingFrameSubtree(nsPresContext* aPresContext, nsFrameManager* aFrameManager, nsVoidArray& aDestroyQueue, nsIFrame* aRemovedFrame, nsIFrame* aFrame) { // Remove the mapping from the content object to its frame. nsIContent* content = aFrame->GetContent(); if (content) { aFrameManager->RemoveAsPrimaryFrame(content, aFrame); aFrameManager->ClearAllUndisplayedContentIn(content); } nsIAtom* childListName = nsnull; PRInt32 childListIndex = 0; do { // Walk aFrame's normal flow child frames looking for placeholder frames. nsIFrame* childFrame = aFrame->GetFirstChild(childListName); for (; childFrame; childFrame = childFrame->GetNextSibling()) { if (NS_LIKELY(nsLayoutAtoms::placeholderFrame != childFrame->GetType())) { DoDeletingFrameSubtree(aPresContext, aFrameManager, aDestroyQueue, aRemovedFrame, childFrame); } else { nsIFrame* outOfFlowFrame = nsPlaceholderFrame::GetRealFrameForPlaceholder(childFrame); // Remove the mapping from the out-of-flow frame to its placeholder. aFrameManager->UnregisterPlaceholderFrame((nsPlaceholderFrame*)childFrame); // Don't SetOutOfFlowFrame(nsnull) here because the float cache depends // on it when the float is removed later on, see bug 348688 comment 6. // Queue the out-of-flow frame to be destroyed only if aRemovedFrame is _not_ // one of its ancestor frames or if it is a popup frame. // If aRemovedFrame is an ancestor of the out-of-flow frame, then // the out-of-flow frame will be destroyed by aRemovedFrame. if (outOfFlowFrame->GetStyleDisplay()->mDisplay == NS_STYLE_DISPLAY_POPUP || !nsLayoutUtils::IsProperAncestorFrame(aRemovedFrame, outOfFlowFrame)) { NS_ASSERTION(aDestroyQueue.IndexOf(outOfFlowFrame) == kNotFound, "out-of-flow is already in the destroy queue"); aDestroyQueue.AppendElement(outOfFlowFrame); // Recurse into the out-of-flow, it is now the aRemovedFrame. DoDeletingFrameSubtree(aPresContext, aFrameManager, aDestroyQueue, outOfFlowFrame, outOfFlowFrame); } else { // Also recurse into the out-of-flow when it's a descendant of aRemovedFrame // since we don't walk those lists, see |childListName| increment below. DoDeletingFrameSubtree(aPresContext, aFrameManager, aDestroyQueue, aRemovedFrame, outOfFlowFrame); } } } // Move to next child list but skip lists with frames we should have // a placeholder for. do { childListName = aFrame->GetAdditionalChildListName(childListIndex++); } while (childListName == nsLayoutAtoms::floatList || childListName == nsLayoutAtoms::absoluteList || childListName == nsLayoutAtoms::overflowOutOfFlowList || childListName == nsLayoutAtoms::fixedList); } while (childListName); return NS_OK; } /** * Called when a frame is about to be deleted. Calls DoDeletingFrameSubtree() * for aFrame and each of its continuing frames */ static nsresult DeletingFrameSubtree(nsPresContext* aPresContext, nsFrameManager* aFrameManager, nsIFrame* aFrame) { NS_ENSURE_TRUE(aFrame, NS_OK); // XXXldb Remove this sometime in the future. // If there's no frame manager it's probably because the pres shell is // being destroyed. if (NS_UNLIKELY(!aFrameManager)) { return NS_OK; } nsAutoVoidArray destroyQueue; // If it's a "special" block-in-inline frame, then we can't really deal. // That really shouldn't be happening. NS_ASSERTION(!IsFrameSpecial(aFrame), "DeletingFrameSubtree on a special frame. Prepare to crash."); do { DoDeletingFrameSubtree(aPresContext, aFrameManager, destroyQueue, aFrame, aFrame); // If it's split, then get the continuing frame. Note that we only do // this for the top-most frame being deleted. Don't do it if we're // recursing over a subtree, because those continuing frames should be // found as part of the walk over the top-most frame's continuing frames. // Walking them again will make this an N^2/2 algorithm. aFrame = aFrame->GetNextInFlow(); } while (aFrame); // Now destroy any out-of-flow frames that have been enqueued for destruction. for (PRInt32 i = destroyQueue.Count() - 1; i >= 0; --i) { nsIFrame* outOfFlowFrame = NS_STATIC_CAST(nsIFrame*, destroyQueue[i]); #ifdef MOZ_XUL const nsStyleDisplay* display = outOfFlowFrame->GetStyleDisplay(); if (display->mDisplay == NS_STYLE_DISPLAY_POPUP) { // Locate the root popup set and remove ourselves from the popup set's list // of popup frames. nsIFrame* rootFrame = aFrameManager->GetRootFrame(); if (rootFrame) rootFrame = rootFrame->GetFirstChild(nsnull); nsCOMPtr rootBox(do_QueryInterface(rootFrame)); NS_ASSERTION(rootBox, "unexpected null pointer"); if (rootBox) { nsIFrame* popupSetFrame; rootBox->GetPopupSetFrame(&popupSetFrame); NS_ASSERTION(popupSetFrame, "unexpected null pointer"); if (popupSetFrame) { nsCOMPtr popupSet(do_QueryInterface(popupSetFrame)); NS_ASSERTION(popupSet, "unexpected null pointer"); if (popupSet) popupSet->RemovePopupFrame(outOfFlowFrame); } } } else #endif { // Get the out-of-flow frame's parent nsIFrame* parentFrame = outOfFlowFrame->GetParent(); // Get the child list name for the out-of-flow frame nsCOMPtr listName; GetChildListNameFor(parentFrame, outOfFlowFrame, getter_AddRefs(listName)); // Ask the out-of-flow's parent to delete the out-of-flow // frame from the right list. aFrameManager->RemoveFrame(parentFrame, listName, outOfFlowFrame); } } return NS_OK; } nsresult nsCSSFrameConstructor::RemoveMappingsForFrameSubtree(nsIFrame* aRemovedFrame, nsILayoutHistoryState* aFrameState) { if (NS_UNLIKELY(mIsDestroyingFrameTree)) { // The frame tree might not be in a consistent state after // WillDestroyFrameTree() has been called. Most likely we're destroying // the pres shell which means the frame manager takes care of clearing all // mappings so there is no need to walk the frame tree here, bug 372576. return NS_OK; } // Save the frame tree's state before deleting it CaptureStateFor(aRemovedFrame, mTempFrameTreeState); return ::DeletingFrameSubtree(mPresShell->GetPresContext(), mPresShell->FrameManager(), aRemovedFrame); } nsresult nsCSSFrameConstructor::ContentRemoved(nsIContent* aContainer, nsIContent* aChild, PRInt32 aIndexInContainer, PRBool aInReinsertContent) { // XXXldb Do we need to re-resolve style to handle the CSS2 + combinator and // the :empty pseudo-class? #ifdef DEBUG if (gNoisyContentUpdates) { printf("nsCSSFrameConstructor::ContentRemoved container=%p child=%p index=%d\n", NS_STATIC_CAST(void*, aContainer), NS_STATIC_CAST(void*, aChild), aIndexInContainer); if (gReallyNoisyContentUpdates) { aContainer->List(stdout, 0); } } #endif nsFrameManager *frameManager = mPresShell->FrameManager(); nsPresContext *presContext = mPresShell->GetPresContext(); nsresult rv = NS_OK; // Find the child frame that maps the content nsIFrame* childFrame; mPresShell->GetPrimaryFrameFor(aChild, &childFrame); if (!childFrame || childFrame->GetContent() != aChild) { // XXXbz the GetContent() != aChild check is needed due to bug 135040. // Remove it once that's fixed. frameManager->ClearUndisplayedContentIn(aChild, aContainer); } // When the last item is removed from a select, // we need to add a pseudo frame so select gets sized as the best it can // so here we see if it is a select and then we get the number of options if (aContainer && childFrame) { nsCOMPtr selectElement = do_QueryInterface(aContainer); if (selectElement) { // XXX temp needed only native controls nsIFrame* selectFrame; // XXX temp needed only native controls mPresShell->GetPrimaryFrameFor(aContainer, &selectFrame); // For "select" add the pseudo frame after the last item is deleted nsIFrame* parentFrame = childFrame->GetParent(); if (parentFrame && parentFrame != selectFrame) { nsFrameConstructorState state(mPresShell, nsnull, nsnull, nsnull); AddDummyFrameToSelect(state, selectFrame, parentFrame, nsnull, aContainer, selectElement); } } } #ifdef MOZ_XUL if (NotifyListBoxBody(presContext, aContainer, aChild, aIndexInContainer, mDocument, childFrame, gUseXBLForms, CONTENT_REMOVED)) return NS_OK; #endif // MOZ_XUL if (childFrame) { // If the frame we are manipulating is a special frame then do // something different instead of just inserting newly created // frames. // NOTE: if we are in ReinsertContent, // then do not reframe as we are already doing just that! if (IsFrameSpecial(childFrame) && !aInReinsertContent) { // We are pretty harsh here (and definitely not optimal) -- we // wipe out the entire containing block and recreate it from // scratch. The reason is that because we know that a special // inline frame has propagated some of its children upward to be // children of the block and that those frames may need to move // around. This logic guarantees a correct answer. #ifdef DEBUG if (gNoisyContentUpdates) { printf("nsCSSFrameConstructor::ContentRemoved: childFrame="); nsFrame::ListTag(stdout, childFrame); printf(" is special\n"); } #endif return ReframeContainingBlock(childFrame); } // Get the childFrame's parent frame nsIFrame* parentFrame = childFrame->GetParent(); if (parentFrame->GetType() == nsLayoutAtoms::frameSetFrame) { // Just reframe the parent, since framesets are weird like that. return RecreateFramesForContent(parentFrame->GetContent()); } // Examine the containing-block for the removed content and see if // :first-letter style applies. nsIFrame* containingBlock = GetFloatContainingBlock(parentFrame); PRBool haveFLS = containingBlock && HaveFirstLetterStyle(containingBlock); if (haveFLS) { // Trap out to special routine that handles adjusting a blocks // frame tree when first-letter style is present. #ifdef NOISY_FIRST_LETTER printf("ContentRemoved: containingBlock="); nsFrame::ListTag(stdout, containingBlock); printf(" parentFrame="); nsFrame::ListTag(stdout, parentFrame); printf(" childFrame="); nsFrame::ListTag(stdout, childFrame); printf("\n"); #endif // First update the containing blocks structure by removing the // existing letter frames. This makes the subsequent logic // simpler. RemoveLetterFrames(presContext, mPresShell, frameManager, containingBlock); // Recover childFrame and parentFrame mPresShell->GetPrimaryFrameFor(aChild, &childFrame); if (!childFrame || childFrame->GetContent() != aChild) { // XXXbz the GetContent() != aChild check is needed due to bug 135040. // Remove it once that's fixed. frameManager->ClearUndisplayedContentIn(aChild, aContainer); return NS_OK; } parentFrame = childFrame->GetParent(); #ifdef NOISY_FIRST_LETTER printf(" ==> revised parentFrame="); nsFrame::ListTag(stdout, parentFrame); printf(" childFrame="); nsFrame::ListTag(stdout, childFrame); printf("\n"); #endif } #ifdef DEBUG if (gReallyNoisyContentUpdates) { printf("nsCSSFrameConstructor::ContentRemoved: childFrame="); nsFrame::ListTag(stdout, childFrame); printf("\n"); if (parentFrame) { nsIFrameDebug* fdbg = nsnull; CallQueryInterface(parentFrame, &fdbg); if (fdbg) fdbg->List(presContext, stdout, 0); } else printf(" ==> no parent frame\n"); } #endif // Walk the frame subtree deleting any out-of-flow frames, and // remove the mapping from content objects to frames ::DeletingFrameSubtree(presContext, frameManager, childFrame); // See if the child frame is a floating frame // (positioned frames are handled below in the "else" clause) const nsStyleDisplay* display = childFrame->GetStyleDisplay(); nsPlaceholderFrame* placeholderFrame = nsnull; if (display->mDisplay == NS_STYLE_DISPLAY_POPUP) // Get the placeholder frame placeholderFrame = frameManager->GetPlaceholderFrameFor(childFrame); if (placeholderFrame) { // Remove the mapping from the frame to its placeholder frameManager->UnregisterPlaceholderFrame(placeholderFrame); // Locate the root popup set and remove ourselves from the popup set's list // of popup frames. nsIFrame* rootFrame = frameManager->GetRootFrame(); if (rootFrame) rootFrame = rootFrame->GetFirstChild(nsnull); #ifdef MOZ_XUL nsCOMPtr rootBox(do_QueryInterface(rootFrame)); if (rootBox) { nsIFrame* popupSetFrame; rootBox->GetPopupSetFrame(&popupSetFrame); if (popupSetFrame) { nsCOMPtr popupSet(do_QueryInterface(popupSetFrame)); if (popupSet) popupSet->RemovePopupFrame(childFrame); } } #endif // Remove the placeholder frame first (XXX second for now) (so // that it doesn't retain a dangling pointer to memory) if (placeholderFrame) { parentFrame = placeholderFrame->GetParent(); ::DeletingFrameSubtree(presContext, frameManager, placeholderFrame); frameManager->RemoveFrame(parentFrame, nsnull, placeholderFrame); return NS_OK; } } else if (childFrame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) { if (display->IsFloating()) { #ifdef NOISY_FIRST_LETTER printf(" ==> child display is still floating!\n"); #endif // Get the placeholder frame nsPlaceholderFrame* placeholderFrame = frameManager->GetPlaceholderFrameFor(childFrame); // Remove the mapping from the frame to its placeholder if (placeholderFrame) frameManager->UnregisterPlaceholderFrame(placeholderFrame); // Now we remove the floating frame // XXX has to be done first for now: the blocks line list // contains an array of pointers to the placeholder - we have to // remove the float first (which gets rid of the lines // reference to the placeholder and float) and then remove the // placeholder rv = frameManager->RemoveFrame(parentFrame, nsLayoutAtoms::floatList, childFrame); if (NS_FAILED(rv)) { // We might have made it normal content instead. Try removing it from // the normal child list. rv = frameManager->RemoveFrame(parentFrame, nsnull, childFrame); } // Remove the placeholder frame first (XXX second for now) (so // that it doesn't retain a dangling pointer to memory) if (placeholderFrame) { parentFrame = placeholderFrame->GetParent(); DeletingFrameSubtree(presContext, frameManager, placeholderFrame); rv = frameManager->RemoveFrame(parentFrame, nsnull, placeholderFrame); } } // See if it's absolutely or fixed positioned else if (display->IsAbsolutelyPositioned()) { // Get the placeholder frame nsPlaceholderFrame* placeholderFrame = frameManager->GetPlaceholderFrameFor(childFrame); // Remove the mapping from the frame to its placeholder if (placeholderFrame) frameManager->UnregisterPlaceholderFrame(placeholderFrame); // Generate two notifications. First for the absolutely positioned // frame rv = frameManager->RemoveFrame(parentFrame, (NS_STYLE_POSITION_FIXED == display->mPosition) ? nsLayoutAtoms::fixedList : nsLayoutAtoms::absoluteList, childFrame); if (NS_FAILED(rv)) { // We might have made it normal content instead. Try removing it from // the normal child list. rv = frameManager->RemoveFrame(parentFrame, nsnull, childFrame); } // Now the placeholder frame if (placeholderFrame) { nsIFrame* placeholderParent = placeholderFrame->GetParent(); rv = frameManager->RemoveFrame(placeholderParent, nsnull, placeholderFrame); } } } else { // Notify the parent frame that it should delete the frame // check for a table caption which goes on an additional child list with a different parent nsIFrame* outerTableFrame; if (GetCaptionAdjustedParent(parentFrame, childFrame, &outerTableFrame)) { rv = frameManager->RemoveFrame(outerTableFrame, nsLayoutAtoms::captionList, childFrame); } else { rv = frameManager->RemoveFrame(parentFrame, nsnull, childFrame); } } if (mInitialContainingBlock == childFrame) { mInitialContainingBlock = nsnull; mInitialContainingBlockIsAbsPosContainer = PR_FALSE; } if (haveFLS && mInitialContainingBlock) { NS_ASSERTION(containingBlock == GetFloatContainingBlock(parentFrame), "What happened here?"); nsFrameConstructorState state(mPresShell, mFixedContainingBlock, GetAbsoluteContainingBlock(parentFrame), containingBlock); RecoverLetterFrames(state, containingBlock); } #ifdef DEBUG if (gReallyNoisyContentUpdates && parentFrame) { nsIFrameDebug* fdbg = nsnull; CallQueryInterface(parentFrame, &fdbg); if (fdbg) { printf("nsCSSFrameConstructor::ContentRemoved: resulting frame model:\n"); fdbg->List(presContext, stdout, 0); } } #endif } return rv; } #ifdef DEBUG // To ensure that the functions below are only called within // |ApplyRenderingChangeToTree|. static PRBool gInApplyRenderingChangeToTree = PR_FALSE; #endif static void DoApplyRenderingChangeToTree(nsPresContext* aPresContext, nsIFrame* aFrame, nsIViewManager* aViewManager, nsFrameManager* aFrameManager, nsChangeHint aChange); /** * @param aBoundsRect returns the bounds enclosing the areas covered by aFrame and its childre * This rect is relative to aFrame's parent */ static void UpdateViewsForTree(nsPresContext* aPresContext, nsIFrame* aFrame, nsIViewManager* aViewManager, nsFrameManager* aFrameManager, nsRect& aBoundsRect, nsChangeHint aChange) { NS_PRECONDITION(gInApplyRenderingChangeToTree, "should only be called within ApplyRenderingChangeToTree"); nsIView* view = aFrame->GetView(); if (view) { if (aChange & nsChangeHint_RepaintFrame) { aViewManager->UpdateView(view, NS_VMREFRESH_NO_SYNC); } if (aChange & nsChangeHint_SyncFrameView) { nsContainerFrame::SyncFrameViewProperties(aPresContext, aFrame, nsnull, view); } } nsRect bounds = aFrame->GetOverflowRect(); // now do children of frame PRInt32 listIndex = 0; nsIAtom* childList = nsnull; do { nsIFrame* child = aFrame->GetFirstChild(childList); while (child) { if (!(child->GetStateBits() & NS_FRAME_OUT_OF_FLOW)) { // only do frames that are in flow if (nsLayoutAtoms::placeholderFrame == child->GetType()) { // placeholder // get out of flow frame and start over there nsIFrame* outOfFlowFrame = nsPlaceholderFrame::GetRealFrameForPlaceholder(child); DoApplyRenderingChangeToTree(aPresContext, outOfFlowFrame, aViewManager, aFrameManager, aChange); } else { // regular frame nsRect childBounds; UpdateViewsForTree(aPresContext, child, aViewManager, aFrameManager, childBounds, aChange); bounds.UnionRect(bounds, childBounds); } } child = child->GetNextSibling(); } childList = aFrame->GetAdditionalChildListName(listIndex++); } while (childList); nsPoint parentOffset = aFrame->GetPosition(); aBoundsRect = bounds + parentOffset; } static void DoApplyRenderingChangeToTree(nsPresContext* aPresContext, nsIFrame* aFrame, nsIViewManager* aViewManager, nsFrameManager* aFrameManager, nsChangeHint aChange) { NS_PRECONDITION(gInApplyRenderingChangeToTree, "should only be called within ApplyRenderingChangeToTree"); for ( ; aFrame; aFrame = GetNifOrSpecialSibling(aFrameManager, aFrame)) { // Get view if this frame has one and trigger an update. If the // frame doesn't have a view, find the nearest containing view // (adjusting r's coordinate system to reflect the nesting) and // update there. nsRect invalidRect; UpdateViewsForTree(aPresContext, aFrame, aViewManager, aFrameManager, invalidRect, aChange); if (!aFrame->HasView() && (aChange & nsChangeHint_RepaintFrame)) { // if frame has view, will already be invalidated invalidRect -= aFrame->GetPosition(); aFrame->Invalidate(invalidRect, PR_FALSE); } } } static void ApplyRenderingChangeToTree(nsPresContext* aPresContext, nsIFrame* aFrame, nsIViewManager* aViewManager, nsChangeHint aChange) { nsIPresShell *shell = aPresContext->PresShell(); PRBool isPaintingSuppressed = PR_FALSE; shell->IsPaintingSuppressed(&isPaintingSuppressed); if (isPaintingSuppressed) { // Don't allow synchronous rendering changes when painting is turned off. aChange = NS_SubtractHint(aChange, nsChangeHint_RepaintFrame); if (!aChange) { return; } } // If the frame's background is propagated to an ancestor, walk up to // that ancestor. const nsStyleBackground *bg; PRBool isCanvas; while (!nsCSSRendering::FindBackground(aPresContext, aFrame, &bg, &isCanvas)) { aFrame = aFrame->GetParent(); NS_ASSERTION(aFrame, "root frame must paint"); } nsIViewManager* viewManager = aViewManager; if (!viewManager) { viewManager = aPresContext->GetViewManager(); } // Trigger rendering updates by damaging this frame and any // continuations of this frame. // XXX this needs to detect the need for a view due to an opacity change and deal with it... viewManager->BeginUpdateViewBatch(); #ifdef DEBUG gInApplyRenderingChangeToTree = PR_TRUE; #endif DoApplyRenderingChangeToTree(aPresContext, aFrame, viewManager, shell->FrameManager(), aChange); #ifdef DEBUG gInApplyRenderingChangeToTree = PR_FALSE; #endif viewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC); } nsresult nsCSSFrameConstructor::StyleChangeReflow(nsIFrame* aFrame, nsIAtom* aAttribute) { // If the frame hasn't even received an initial reflow, then don't // send it a style-change reflow! if (aFrame->GetStateBits() & NS_FRAME_FIRST_REFLOW) return NS_OK; #ifdef DEBUG if (gNoisyContentUpdates) { printf("nsCSSFrameConstructor::StyleChangeReflow: aFrame="); nsFrame::ListTag(stdout, aFrame); printf("\n"); } #endif // Is it a box? If so we can coelesce. if (aFrame->IsBoxFrame()) { nsBoxLayoutState state(mPresShell->GetPresContext()); aFrame->MarkStyleChange(state); } else { // If the frame is part of a split block-in-inline hierarchy, then // target the style-change reflow at the first ``normal'' ancestor // so we're sure that the style change will propagate to any // anonymously created siblings. if (IsFrameSpecial(aFrame)) aFrame = GetIBContainingBlockFor(aFrame); // Target a style-change reflow at the frame. mPresShell->AppendReflowCommand(aFrame, eReflowType_StyleChanged, nsnull); } return NS_OK; } nsresult nsCSSFrameConstructor::CharacterDataChanged(nsIContent* aContent, PRBool aAppend) { nsresult rv = NS_OK; // Find the child frame nsIFrame* frame; mPresShell->GetPrimaryFrameFor(aContent, &frame); // Notify the first frame that maps the content. It will generate a reflow // command // It's possible the frame whose content changed isn't inserted into the // frame hierarchy yet, or that there is no frame that maps the content if (nsnull != frame) { #if 0 NS_FRAME_LOG(NS_FRAME_TRACE_CALLS, ("nsCSSFrameConstructor::CharacterDataChanged: content=%p[%s] subcontent=%p frame=%p", aContent, ContentTag(aContent, 0), aSubContent, frame)); #endif // Special check for text content that is a child of a letter frame. If // this happens, we should remove the letter frame, do whatever we're // planning to do with this notification, then put the letter frame back. // Note that this is basically what ReinsertContent ends up doing; the // reason we dont' want to call that here is that our text content could be // native anonymous, in which case ReinsertContent would completely barf on // it. And reinserting the non-anonymous ancestor would just lead us to // come back into this notification (e.g. if quotes or counters are // involved), leading to a loop. PRBool haveFirstLetterStyle = PR_FALSE; nsIFrame* block = nsnull; nsCOMPtr textContent(do_QueryInterface(aContent)); if (textContent) { // Ok, it's text content. Now do some real work... block = GetFloatContainingBlock(frame); if (block) { // See if the block has first-letter style applied to it. haveFirstLetterStyle = HaveFirstLetterStyle(block); if (haveFirstLetterStyle) { RemoveLetterFrames(mPresShell->GetPresContext(), mPresShell, mPresShell->FrameManager(), block); // Reget |frame|, since we might have killed it. Do we // really need to call CharacterDataChanged in this case, // though? mPresShell->GetPrimaryFrameFor(aContent, &frame); NS_ASSERTION(frame, "Should have frame here!"); } } } frame->CharacterDataChanged(mPresShell->GetPresContext(), aContent, aAppend); if (haveFirstLetterStyle) { // Note that if we got here |block| is not null nsFrameConstructorState state(mPresShell, mFixedContainingBlock, GetAbsoluteContainingBlock(frame), block, nsnull); RecoverLetterFrames(state, block); } } return rv; } #ifdef ACCESSIBILITY nsIAtom* nsCSSFrameConstructor::GetRenderedFrameType(nsIFrame *aFrame) { if (aFrame) { const nsStyleVisibility* vis = aFrame->GetStyleVisibility(); if (vis->IsVisible()) { return aFrame->GetType(); } } return nsnull; } void nsCSSFrameConstructor::NotifyAccessibleChange(nsIAtom *aPreviousFrameType, nsIAtom *aFrameType, nsIContent *aContent) { if (aFrameType == aPreviousFrameType) { return; } PRUint32 event = nsIAccessibleEvent::EVENT_REORDER; if (!aPreviousFrameType) { event = nsIAccessibleEvent::EVENT_SHOW; } else if (!aFrameType) { event = nsIAccessibleEvent::EVENT_HIDE; } // A significant enough change occured that this part // of the accessible tree is no longer valid. nsCOMPtr accService = do_GetService("@mozilla.org/accessibilityService;1"); if (accService) { accService->InvalidateSubtreeFor(mPresShell, aContent, event); } } #endif nsresult nsCSSFrameConstructor::ProcessRestyledFrames(nsStyleChangeList& aChangeList) { PRInt32 count = aChangeList.Count(); if (!count) return NS_OK; // Make sure to not rebuild quote or counter lists while we're // processing restyles BeginUpdate(); nsPropertyTable *propTable = mPresShell->GetPresContext()->PropertyTable(); // Mark frames so that we skip frames that die along the way, bug 123049. // A frame can be in the list multiple times with different hints. Further // optmization is possible if nsStyleChangeList::AppendChange could coalesce PRInt32 index = count; while (0 <= --index) { const nsStyleChangeData* changeData; aChangeList.ChangeAt(index, &changeData); if (changeData->mFrame) { propTable->SetProperty(changeData->mFrame, nsLayoutAtoms::changeListProperty, nsnull, nsnull, nsnull); } } index = count; while (0 <= --index) { nsIFrame* frame; nsIContent* content; nsChangeHint hint; aChangeList.ChangeAt(index, frame, content, hint); if (frame && frame->GetContent() != content) { // XXXbz this is due to image maps messing with the primary frame map. // See bug 135040. Remove this block once that's fixed. frame = nsnull; if (!(hint & nsChangeHint_ReconstructFrame)) { continue; } } // skip any frame that has been destroyed due to a ripple effect if (frame) { nsresult res; propTable->GetProperty(frame, nsLayoutAtoms::changeListProperty, &res); if (NS_PROPTABLE_PROP_NOT_THERE == res) continue; } if (hint & nsChangeHint_ReconstructFrame) { RecreateFramesForContent(content); } else { NS_ASSERTION(frame, "This shouldn't happen"); if (hint & nsChangeHint_ReflowFrame) { StyleChangeReflow(frame, nsnull); } if (hint & (nsChangeHint_RepaintFrame | nsChangeHint_SyncFrameView)) { ApplyRenderingChangeToTree(mPresShell->GetPresContext(), frame, nsnull, hint); } if (hint & nsChangeHint_UpdateCursor) { nsIViewManager* viewMgr = mPresShell->GetViewManager(); if (viewMgr) viewMgr->SynthesizeMouseMove(PR_FALSE); } } #ifdef DEBUG // reget from content since it may have been regenerated... if (content) { nsIFrame* frame; mPresShell->GetPrimaryFrameFor(content, &frame); if (frame) { mPresShell->FrameManager()->DebugVerifyStyleTree(frame); } } else { NS_WARNING("Unable to test style tree integrity -- no content node"); } #endif } EndUpdate(); // cleanup references index = count; while (0 <= --index) { const nsStyleChangeData* changeData; aChangeList.ChangeAt(index, &changeData); if (changeData->mFrame) { propTable->DeleteProperty(changeData->mFrame, nsLayoutAtoms::changeListProperty); } } aChangeList.Clear(); return NS_OK; } void nsCSSFrameConstructor::RestyleElement(nsIContent *aContent, nsIFrame *aPrimaryFrame, nsChangeHint aMinHint) { if (aPrimaryFrame && aPrimaryFrame->GetContent() != aContent) { // XXXbz this is due to image maps messing with the primary frame mapping. // See bug 135040. We can remove this block once that's fixed. aPrimaryFrame = nsnull; } #ifdef ACCESSIBILITY nsIAtom *prevRenderedFrameType = nsnull; if (mPresShell->IsAccessibilityActive()) { prevRenderedFrameType = GetRenderedFrameType(aPrimaryFrame); } #endif if (aMinHint & nsChangeHint_ReconstructFrame) { RecreateFramesForContent(aContent); } else if (aPrimaryFrame) { nsStyleChangeList changeList; if (aMinHint) { changeList.AppendChange(aPrimaryFrame, aContent, aMinHint); } nsChangeHint frameChange = mPresShell->FrameManager()-> ComputeStyleChangeFor(aPrimaryFrame, &changeList, aMinHint); if (frameChange & nsChangeHint_ReconstructFrame) { RecreateFramesForContent(aContent); changeList.Clear(); } else { ProcessRestyledFrames(changeList); } } else { // no frames, reconstruct for content MaybeRecreateFramesForContent(aContent); } #ifdef ACCESSIBILITY if (mPresShell->IsAccessibilityActive()) { nsIFrame *frame; mPresShell->GetPrimaryFrameFor(aContent, &frame); NotifyAccessibleChange(prevRenderedFrameType, GetRenderedFrameType(frame), aContent); } #endif } void nsCSSFrameConstructor::RestyleLaterSiblings(nsIContent *aContent) { nsIContent *parent = aContent->GetParent(); if (!parent) return; // root element has no later siblings for (PRInt32 index = parent->IndexOf(aContent) + 1, index_end = parent->GetChildCount(); index != index_end; ++index) { nsIContent *child = parent->GetChildAt(index); if (!child->IsContentOfType(nsIContent::eELEMENT)) continue; nsIFrame* primaryFrame = nsnull; mPresShell->GetPrimaryFrameFor(child, &primaryFrame); RestyleElement(child, primaryFrame, NS_STYLE_HINT_NONE); } } nsresult nsCSSFrameConstructor::ContentStatesChanged(nsIContent* aContent1, nsIContent* aContent2, PRInt32 aStateMask) { DoContentStateChanged(aContent1, aStateMask); DoContentStateChanged(aContent2, aStateMask); return NS_OK; } void nsCSSFrameConstructor::DoContentStateChanged(nsIContent* aContent, PRInt32 aStateMask) { nsStyleSet *styleSet = mPresShell->StyleSet(); nsPresContext *presContext = mPresShell->GetPresContext(); NS_ASSERTION(styleSet, "couldn't get style set"); if (aContent) { nsIFrame* primaryFrame = nsnull; mPresShell->GetPrimaryFrameFor(aContent, &primaryFrame); nsChangeHint hint = NS_STYLE_HINT_NONE; if (primaryFrame) { PRUint8 app = primaryFrame->GetStyleDisplay()->mAppearance; if (app) { nsITheme *theme = presContext->GetTheme(); if (theme && theme->ThemeSupportsWidget(presContext, primaryFrame, app)) { PRBool repaint = PR_FALSE; theme->WidgetStateChanged(primaryFrame, app, nsnull, &repaint); if (repaint) { NS_UpdateHint(hint, nsChangeHint_RepaintFrame); } } } } nsReStyleHint rshint = styleSet->HasStateDependentStyle(presContext, aContent, aStateMask); PostRestyleEvent(aContent, rshint, hint); } } nsresult nsCSSFrameConstructor::AttributeChanged(nsIContent* aContent, PRInt32 aNameSpaceID, nsIAtom* aAttribute, PRInt32 aModType) { nsresult result = NS_OK; // Hold onto the PresShell to prevent ourselves from being destroyed. // XXXbz how, exactly, would this attribute change cause us to be // destroyed from inside this function? nsCOMPtr shell = mPresShell; // Get the frame associated with the content which is the highest in the frame tree nsIFrame* primaryFrame; shell->GetPrimaryFrameFor(aContent, &primaryFrame); #if 0 NS_FRAME_LOG(NS_FRAME_TRACE_CALLS, ("HTMLStyleSheet::AttributeChanged: content=%p[%s] frame=%p", aContent, ContentTag(aContent, 0), frame)); #endif // the style tag has its own interpretation based on aHint nsChangeHint hint = NS_STYLE_HINT_NONE; nsCOMPtr styledContent = do_QueryInterface(aContent); if (styledContent) { // Get style hint from HTML content object. hint = styledContent->GetAttributeChangeHint(aAttribute, aModType); } PRBool reframe = (hint & nsChangeHint_ReconstructFrame) != 0; #ifdef MOZ_XUL // The following listbox widget trap prevents offscreen listbox widget // content from being removed and re-inserted (which is what would // happen otherwise). if (!primaryFrame && !reframe) { PRInt32 namespaceID; nsCOMPtr tag; mDocument->BindingManager()->ResolveTag(aContent, &namespaceID, getter_AddRefs(tag)); if (namespaceID == kNameSpaceID_XUL && (tag == nsXULAtoms::listitem || tag == nsXULAtoms::listcell)) return NS_OK; } if (aAttribute == nsXULAtoms::tooltiptext || aAttribute == nsXULAtoms::tooltip) { nsIFrame* rootFrame = shell->FrameManager()->GetRootFrame(); if (rootFrame) rootFrame = rootFrame->GetFirstChild(nsnull); nsCOMPtr rootBox(do_QueryInterface(rootFrame)); if (rootBox) { if (aModType == nsIDOMMutationEvent::REMOVAL) rootBox->RemoveTooltipSupport(aContent); if (aModType == nsIDOMMutationEvent::ADDITION) rootBox->AddTooltipSupport(aContent); } } #endif // MOZ_XUL // See if we have appearance information for a theme. if (primaryFrame) { const nsStyleDisplay* disp = primaryFrame->GetStyleDisplay(); if (disp->mAppearance) { nsPresContext* presContext = mPresShell->GetPresContext(); nsITheme *theme = presContext->GetTheme(); if (theme && theme->ThemeSupportsWidget(presContext, primaryFrame, disp->mAppearance)) { PRBool repaint = PR_FALSE; theme->WidgetStateChanged(primaryFrame, disp->mAppearance, aAttribute, &repaint); if (repaint) NS_UpdateHint(hint, nsChangeHint_RepaintFrame); } } } nsFrameManager *frameManager = shell->FrameManager(); nsReStyleHint rshint = frameManager->HasAttributeDependentStyle(aContent, aAttribute, aModType); // let the frame deal with it now, so we don't have to deal later if (primaryFrame) { result = primaryFrame->AttributeChanged(aContent, aNameSpaceID, aAttribute, aModType); // XXXwaterson should probably check for special IB siblings // here, and propagate the AttributeChanged notification to // them, as well. Currently, inline frames don't do anything on // this notification, so it's not that big a deal. } // Menus and such can't deal with asynchronous changes of display // when the menugenerated or menuactive attribute changes, so make // sure to process that immediately if (aNameSpaceID == kNameSpaceID_None && ((aAttribute == nsXULAtoms::menugenerated && aModType != nsIDOMMutationEvent::REMOVAL) || aAttribute == nsXULAtoms::menuactive)) { PRInt32 namespaceID; nsCOMPtr tag; mDocument->BindingManager()->ResolveTag(aContent, &namespaceID, getter_AddRefs(tag)); if (namespaceID == kNameSpaceID_XUL && (tag == nsXULAtoms::menupopup || tag == nsXULAtoms::popup || tag == nsXULAtoms::tooltip || tag == nsXULAtoms::menu)) { nsIViewManager* viewManager = mPresShell->GetViewManager(); viewManager->BeginUpdateViewBatch(); ProcessOneRestyle(aContent, rshint, hint); viewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC); return result; } } PostRestyleEvent(aContent, rshint, hint); return result; } void nsCSSFrameConstructor::EndUpdate() { if (mUpdateCount == 1) { // This is the end of our last update. Before we decrement // mUpdateCount, recalc quotes and counters as needed. RecalcQuotesAndCounters(); NS_ASSERTION(mUpdateCount == 1, "Odd update count"); } --mUpdateCount; } void nsCSSFrameConstructor::RecalcQuotesAndCounters() { if (mQuotesDirty) { mQuotesDirty = PR_FALSE; mQuoteList.RecalcAll(); } if (mCountersDirty) { mCountersDirty = PR_FALSE; mCounterManager.RecalcAll(); } NS_ASSERTION(!mQuotesDirty, "Quotes updates will be lost"); NS_ASSERTION(!mCountersDirty, "Counter updates will be lost"); } void nsCSSFrameConstructor::WillDestroyFrameTree() { #if defined(DEBUG_dbaron_off) mCounterManager.Dump(); #endif mIsDestroyingFrameTree = PR_TRUE; // Prevent frame tree destruction from being O(N^2) mQuoteList.Clear(); mCounterManager.Clear(); // Cancel all pending reresolves mRestyleEventQueue = nsnull; nsCOMPtr eventQueue; mEventQueueService->GetSpecialEventQueue(nsIEventQueueService::UI_THREAD_EVENT_QUEUE, getter_AddRefs(eventQueue)); eventQueue->RevokeEvents(this); } //STATIC void nsCSSFrameConstructor::GetAlternateTextFor(nsIContent* aContent, nsIAtom* aTag, // content object's tag nsXPIDLString& aAltText) { nsresult rv; // The "alt" attribute specifies alternate text that is rendered // when the image can not be displayed rv = aContent->GetAttr(kNameSpaceID_None, nsHTMLAtoms::alt, aAltText); // If there's no "alt" attribute, and aContent is an input // element, then use the value of the "value" attribute if ((NS_CONTENT_ATTR_NOT_THERE == rv) && (nsHTMLAtoms::input == aTag)) { rv = aContent->GetAttr(kNameSpaceID_None, nsHTMLAtoms::value, aAltText); // If there's no "value" attribute either, then use the localized string // for "Submit" as the alternate text. if (NS_CONTENT_ATTR_NOT_THERE == rv) { nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES, "Submit", aAltText); } } } // Construct an alternate frame to use when the image can't be rendered nsresult nsCSSFrameConstructor::ConstructAlternateFrame(nsIContent* aContent, nsStyleContext* aStyleContext, nsIFrame* aGeometricParent, nsIFrame* aContentParent, nsIFrame*& aFrame) { nsresult rv; nsXPIDLString altText; // Initialize OUT parameter aFrame = nsnull; // Get the alternate text to use GetAlternateTextFor(aContent, aContent->Tag(), altText); // Create a text content element for the alternate text nsCOMPtr altTextContent; rv = NS_NewTextNode(getter_AddRefs(altTextContent), mDocument->NodeInfoManager()); if (NS_FAILED(rv)) return rv; // Set the content's text altTextContent->SetText(altText, PR_TRUE); // Set aContent as the parent content. // XXXbz should this set the binding parent to |altTextContent|? rv = altTextContent->BindToTree(mDocument, aContent, nsnull, PR_TRUE); if (NS_FAILED(rv)) { altTextContent->UnbindFromTree(); return rv; } // XXXbz shouldn't it be set native anonymous too? // Create either an inline frame, block frame, or area frame nsIFrame* containerFrame; PRBool isOutOfFlow = PR_FALSE; const nsStyleDisplay* display = aStyleContext->GetStyleDisplay(); if (display->IsAbsolutelyPositioned()) { NS_NewAbsoluteItemWrapperFrame(mPresShell, &containerFrame); isOutOfFlow = PR_TRUE; } else if (display->IsFloating()) { NS_NewFloatingItemWrapperFrame(mPresShell, &containerFrame); isOutOfFlow = PR_TRUE; } else if (NS_STYLE_DISPLAY_BLOCK == display->mDisplay) { NS_NewBlockFrame(mPresShell, &containerFrame); } else { NS_NewInlineFrame(mPresShell, &containerFrame); } nsPresContext* presContext = mPresShell->GetPresContext(); containerFrame->Init(presContext, aContent, aGeometricParent, aStyleContext, nsnull); nsHTMLContainerFrame::CreateViewForFrame(containerFrame, aContentParent, PR_FALSE); // If the frame is out-of-flow, then mark it as such if (isOutOfFlow) { containerFrame->AddStateBits(NS_FRAME_OUT_OF_FLOW); } // Create a text frame to display the alt-text. It gets a pseudo-element // style context nsIFrame* textFrame; NS_NewTextFrame(mPresShell, &textFrame); nsRefPtr textStyleContext; textStyleContext = mPresShell->StyleSet()-> ResolveStyleForNonElement(aStyleContext); textFrame->Init(presContext, altTextContent, containerFrame, textStyleContext, nsnull); containerFrame->SetInitialChildList(presContext, nsnull, textFrame); // Return the container frame aFrame = containerFrame; return NS_OK; } #ifdef NS_DEBUG static PRBool IsPlaceholderFrame(nsIFrame* aFrame) { return aFrame->GetType() == nsLayoutAtoms::placeholderFrame; } #endif static PRBool HasDisplayableChildren(nsIFrame* aContainerFrame) { // Returns 'true' if there are frames within aContainerFrame that // could be displayed in the frame list. NS_PRECONDITION(aContainerFrame != nsnull, "null ptr"); if (! aContainerFrame) return PR_FALSE; nsIFrame* frame = aContainerFrame->GetFirstChild(nsnull); while (frame) { // If it's not a text frame, then assume that it's displayable. if (frame->GetType() != nsLayoutAtoms::textFrame) return PR_TRUE; // If not only whitespace, then we have displayable content here. if (! IsOnlyWhitespace(frame->GetContent())) return PR_TRUE; // Otherwise, on to the next frame... frame = frame->GetNextSibling(); } // If we get here, then we've iterated through all the child frames, // and every one is a text frame containing whitespace. (Or, there // weren't any frames at all!) There is nothing to diplay. return PR_FALSE; } nsresult nsCSSFrameConstructor::CantRenderReplacedElement(nsIFrame* aFrame) { nsresult rv = NS_OK; // Get parent frame and style context nsIFrame* parentFrame = aFrame->GetParent(); nsStyleContext* styleContext = aFrame->GetStyleContext(); // Get aFrame's content object and the tag name nsIAtom* tag; nsIContent* content = aFrame->GetContent(); NS_ASSERTION(content, "null content object"); tag = content->Tag(); // Get the child list name that the frame is contained in nsCOMPtr listName; GetChildListNameFor(parentFrame, aFrame, getter_AddRefs(listName)); // If the frame is out of the flow, then it has a placeholder frame. nsPlaceholderFrame* placeholderFrame = nsnull; if (listName) { mPresShell->GetPlaceholderFrameFor(aFrame, (nsIFrame**) &placeholderFrame); } // Get the previous sibling frame nsFrameList frameList(parentFrame->GetFirstChild(listName)); // See whether it's an IMG or an INPUT element (for image buttons) // or if it is an applet with no displayable children // XXX need to check nameSpaceID in these spots if (nsHTMLAtoms::img == tag || nsHTMLAtoms::input == tag || (nsHTMLAtoms::applet == tag && !HasDisplayableChildren(aFrame))) { // Try and construct an alternate frame to use when the // image can't be rendered nsIFrame* newFrame; rv = ConstructAlternateFrame(content, styleContext, parentFrame, nsnull, newFrame); if (NS_SUCCEEDED(rv)) { nsFrameManager *frameManager = mPresShell->FrameManager(); // Replace the old frame with the new frame ::DeletingFrameSubtree(mPresShell->GetPresContext(), frameManager, aFrame); // Reset the primary frame mapping frameManager->SetPrimaryFrameFor(content, newFrame); // Replace the old frame with the new frame // XXXbz If this fails, we leak the content node newFrame points to! frameManager->ReplaceFrame(parentFrame, listName, aFrame, newFrame); // Now that we've replaced the primary frame, if there's a placeholder // frame then complete the transition from image frame to new frame if (placeholderFrame) { // Remove the association between the old frame and its placeholder frameManager->UnregisterPlaceholderFrame(placeholderFrame); // Placeholder frames have a pointer back to the out-of-flow frame. // Make sure that's correct, too. placeholderFrame->SetOutOfFlowFrame(newFrame); // Reuse the existing placeholder frame, and add an association to the // new frame frameManager->RegisterPlaceholderFrame(placeholderFrame); // XXX Work around a bug in the block code where the float won't get // reflowed unless the line containing the placeholder frame is reflowed... placeholderFrame->GetParent()-> ReflowDirtyChild(mPresShell, placeholderFrame); } } } else if ((nsHTMLAtoms::object == tag) || (nsHTMLAtoms::embed == tag) || (nsHTMLAtoms::applet == tag)) { // It's an OBJECT, EMBED, or APPLET, so we should display the contents // instead nsIFrame* absoluteContainingBlock; nsIFrame* floatContainingBlock; nsIFrame* inFlowParent = parentFrame; // If the OBJECT frame is out-of-flow, then get the placeholder frame's // parent and use that when determining the absolute containing block and // float containing block if (placeholderFrame) { inFlowParent = placeholderFrame->GetParent(); } absoluteContainingBlock = GetAbsoluteContainingBlock(inFlowParent); floatContainingBlock = GetFloatContainingBlock(inFlowParent); #ifdef NS_DEBUG // Verify that we calculated the same containing block if (listName == nsLayoutAtoms::absoluteList) { NS_ASSERTION(absoluteContainingBlock == parentFrame, "wrong absolute containing block"); } else if (listName == nsLayoutAtoms::floatList) { NS_ASSERTION(floatContainingBlock == parentFrame, "wrong float containing block"); } #endif // Now initialize the frame construction state nsFrameConstructorState state(mPresShell, mFixedContainingBlock, absoluteContainingBlock, floatContainingBlock); nsFrameItems frameItems; const nsStyleDisplay* display = styleContext->GetStyleDisplay(); // Create a new frame based on the display type. // Note: if the old frame was out-of-flow, then so will the new frame // and we'll get a new placeholder frame // XXXbz handle pseudos? Just trying to do it here doesn't quite work // because of the list-munging we end up doing later in this function.... rv = ConstructFrameByDisplayType(state, display, content, content->GetNameSpaceID(), tag, inFlowParent, styleContext, frameItems, PR_FALSE); if (NS_FAILED(rv)) return rv; nsIFrame* newFrame = frameItems.childList; if (NS_SUCCEEDED(rv)) { if (placeholderFrame) { // Remove the association between the old frame and its placeholder // Note: ConstructFrameByDisplayType() will already have added an // association for the new placeholder frame state.mFrameManager->UnregisterPlaceholderFrame(placeholderFrame); // Verify that the new frame is also a placeholder frame NS_ASSERTION(IsPlaceholderFrame(newFrame), "unexpected frame type"); // Replace the old placeholder frame with the new placeholder frame state.mFrameManager->ReplaceFrame(inFlowParent, nsnull, placeholderFrame, newFrame); } // Replace the primary frame if (listName == nsnull) { if (IsInlineFrame(parentFrame) && !AreAllKidsInline(newFrame)) { // We're in the uncomfortable position of being an inline // that now contains a block. As in ConstructInline(), break // the newly constructed frames into three lists: the inline // frames before the first block frame (list1), the inline // frames after the last block frame (list3), and all the // frames between the first and last block frames (list2). nsIFrame* list1 = newFrame; nsIFrame* prevToFirstBlock; nsIFrame* list2 = FindFirstBlock(list1, &prevToFirstBlock); NS_ASSERTION(list2, "Why did we get into this code?"); if (prevToFirstBlock) prevToFirstBlock->SetNextSibling(nsnull); else list1 = nsnull; nsIFrame* afterFirstBlock = list2->GetNextSibling(); nsIFrame* lastBlock = FindLastBlock(afterFirstBlock); if (! lastBlock) lastBlock = list2; nsIFrame* list3 = lastBlock->GetNextSibling(); lastBlock->SetNextSibling(nsnull); // Create "special" inline-block linkage between the frames // XXXldb Do we really need to do this? It doesn't seem // consistent with the use in ConstructInline. if (list1) { SetFrameIsSpecial(list1, list2); SetFrameIsSpecial(list2, list3); if (list3) { SetFrameIsSpecial(list3, nsnull); } } // Recursively split inlines back up to the first containing // block frame. SplitToContainingBlock(state, parentFrame, list1, list2, list3, PR_FALSE); } } else if (listName == nsLayoutAtoms::absoluteList) { newFrame = state.mAbsoluteItems.childList; state.mAbsoluteItems.childList = nsnull; } else if (listName == nsLayoutAtoms::fixedList) { newFrame = state.mFixedItems.childList; state.mFixedItems.childList = nsnull; } else if (listName == nsLayoutAtoms::floatList) { newFrame = state.mFloatedItems.childList; state.mFloatedItems.childList = nsnull; } ::DeletingFrameSubtree(state.mPresContext, state.mFrameManager, aFrame); state.mFrameManager->ReplaceFrame(parentFrame, listName, aFrame, newFrame); // Reset the primary frame mapping. Don't assume that // ConstructFrameByDisplayType() has done this state.mFrameManager->SetPrimaryFrameFor(content, newFrame); } } else if (nsHTMLAtoms::input == tag) { // XXX image INPUT elements are also image frames, but don't throw away the // image frame, because the frame class has extra logic that is specific to // INPUT elements } else { NS_ASSERTION(PR_FALSE, "unexpected tag"); } return rv; } nsresult nsCSSFrameConstructor::CreateContinuingOuterTableFrame(nsIPresShell* aPresShell, nsPresContext* aPresContext, nsIFrame* aFrame, nsIFrame* aParentFrame, nsIContent* aContent, nsStyleContext* aStyleContext, nsIFrame** aContinuingFrame) { nsIFrame* newFrame; nsresult rv; rv = NS_NewTableOuterFrame(aPresShell, &newFrame); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, aContent, aParentFrame, aStyleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); // Create a continuing inner table frame, and if there's a caption then // replicate the caption nsFrameItems newChildFrames; nsIFrame* childFrame = aFrame->GetFirstChild(nsnull); if (childFrame) { nsIFrame* continuingTableFrame; rv = CreateContinuingFrame(aPresContext, childFrame, newFrame, &continuingTableFrame); if (NS_FAILED(rv)) { newFrame->Destroy(aPresContext); *aContinuingFrame = nsnull; return rv; } newChildFrames.AddChild(continuingTableFrame); NS_ASSERTION(!childFrame->GetNextSibling(),"there can be only one inner table frame"); } // Set the outer table's initial child list newFrame->SetInitialChildList(aPresContext, nsnull, newChildFrames.childList); } *aContinuingFrame = newFrame; return rv; } nsresult nsCSSFrameConstructor::CreateContinuingTableFrame(nsIPresShell* aPresShell, nsPresContext* aPresContext, nsIFrame* aFrame, nsIFrame* aParentFrame, nsIContent* aContent, nsStyleContext* aStyleContext, nsIFrame** aContinuingFrame) { nsIFrame* newFrame; nsresult rv; rv = NS_NewTableFrame(aPresShell, &newFrame); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, aContent, aParentFrame, aStyleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); // Replicate any header/footer frames nsFrameItems childFrames; nsIFrame* childFrame = aFrame->GetFirstChild(nsnull); for ( ; childFrame; childFrame = childFrame->GetNextSibling()) { // See if it's a header/footer, possibly wrapped in a scroll frame. nsTableRowGroupFrame* rowGroupFrame = nsTableFrame::GetRowGroupFrame(childFrame); if (rowGroupFrame) { // If the row group was continued, then don't replicate it. nsIFrame* rgNextInFlow = rowGroupFrame->GetNextInFlow(); if (rgNextInFlow) { rowGroupFrame->SetRepeatable(PR_FALSE); } else if (rowGroupFrame->IsRepeatable()) { // Replicate the header/footer frame. nsTableRowGroupFrame* headerFooterFrame; nsFrameItems childItems; nsFrameConstructorState state(mPresShell, mFixedContainingBlock, GetAbsoluteContainingBlock(newFrame), nsnull); nsIFrame* tmp; NS_NewTableRowGroupFrame(aPresShell, &tmp); headerFooterFrame = NS_STATIC_CAST(nsTableRowGroupFrame*, tmp); nsIContent* headerFooter = rowGroupFrame->GetContent(); headerFooterFrame->Init(aPresContext, headerFooter, newFrame, rowGroupFrame->GetStyleContext(), nsnull); nsTableCreator tableCreator(aPresShell); ProcessChildren(state, headerFooter, headerFooterFrame, PR_FALSE, childItems, PR_FALSE, &tableCreator); NS_ASSERTION(!state.mFloatedItems.childList, "unexpected floated element"); headerFooterFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList); headerFooterFrame->SetRepeatable(PR_TRUE); // Table specific initialization headerFooterFrame->InitRepeatedFrame(aPresContext, rowGroupFrame); // XXX Deal with absolute and fixed frames... childFrames.AddChild(headerFooterFrame); } } } // Set the table frame's initial child list newFrame->SetInitialChildList(aPresContext, nsnull, childFrames.childList); } *aContinuingFrame = newFrame; return rv; } nsresult nsCSSFrameConstructor::CreateContinuingFrame(nsPresContext* aPresContext, nsIFrame* aFrame, nsIFrame* aParentFrame, nsIFrame** aContinuingFrame) { nsIPresShell* shell = aPresContext->PresShell(); nsStyleContext* styleContext = aFrame->GetStyleContext(); nsIFrame* newFrame = nsnull; nsresult rv = NS_OK; nsIFrame* nextInFlow = aFrame->GetNextInFlow(); // Use the frame type to determine what type of frame to create nsIAtom* frameType = aFrame->GetType(); nsIContent* content = aFrame->GetContent(); if (nsLayoutAtoms::textFrame == frameType) { rv = NS_NewContinuingTextFrame(shell, &newFrame); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); } } else if (nsLayoutAtoms::inlineFrame == frameType) { rv = NS_NewInlineFrame(shell, &newFrame); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); } } else if (nsLayoutAtoms::blockFrame == frameType) { rv = NS_NewBlockFrame(shell, &newFrame); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); } } else if (nsLayoutAtoms::areaFrame == frameType) { rv = NS_NewAreaFrame(shell, &newFrame, 0); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); } } else if (nsLayoutAtoms::columnSetFrame == frameType) { rv = NS_NewColumnSetFrame(shell, &newFrame, 0); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); } } else if (nsLayoutAtoms::positionedInlineFrame == frameType) { rv = NS_NewPositionedInlineFrame(shell, &newFrame); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); } } else if (nsLayoutAtoms::pageFrame == frameType) { nsIFrame* pageContentFrame; rv = ConstructPageFrame(shell, aPresContext, aParentFrame, aFrame, newFrame, pageContentFrame); } else if (nsLayoutAtoms::tableOuterFrame == frameType) { rv = CreateContinuingOuterTableFrame(shell, aPresContext, aFrame, aParentFrame, content, styleContext, &newFrame); } else if (nsLayoutAtoms::tableFrame == frameType) { rv = CreateContinuingTableFrame(shell, aPresContext, aFrame, aParentFrame, content, styleContext, &newFrame); } else if (nsLayoutAtoms::tableRowGroupFrame == frameType) { rv = NS_NewTableRowGroupFrame(shell, &newFrame); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); } } else if (nsLayoutAtoms::tableRowFrame == frameType) { rv = NS_NewTableRowFrame(shell, &newFrame); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); // Create a continuing frame for each table cell frame nsFrameItems newChildList; nsIFrame* cellFrame = aFrame->GetFirstChild(nsnull); while (cellFrame) { // See if it's a table cell frame if (IS_TABLE_CELL(cellFrame->GetType())) { nsIFrame* continuingCellFrame; rv = CreateContinuingFrame(aPresContext, cellFrame, newFrame, &continuingCellFrame); if (NS_FAILED(rv)) { nsFrameList tmp(newChildList.childList); tmp.DestroyFrames(aPresContext); newFrame->Destroy(aPresContext); *aContinuingFrame = nsnull; return NS_ERROR_OUT_OF_MEMORY; } newChildList.AddChild(continuingCellFrame); } cellFrame = cellFrame->GetNextSibling(); } // Set the table cell's initial child list newFrame->SetInitialChildList(aPresContext, nsnull, newChildList.childList); } } else if (IS_TABLE_CELL(frameType)) { rv = NS_NewTableCellFrame(shell, IsBorderCollapse(aParentFrame), &newFrame); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); // Create a continuing area frame nsIFrame* continuingAreaFrame; nsIFrame* areaFrame = aFrame->GetFirstChild(nsnull); rv = CreateContinuingFrame(aPresContext, areaFrame, newFrame, &continuingAreaFrame); if (NS_FAILED(rv)) { newFrame->Destroy(aPresContext); *aContinuingFrame = nsnull; return rv; } // Set the table cell's initial child list newFrame->SetInitialChildList(aPresContext, nsnull, continuingAreaFrame); } } else if (nsLayoutAtoms::lineFrame == frameType) { rv = NS_NewFirstLineFrame(shell, &newFrame); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); } } else if (nsLayoutAtoms::letterFrame == frameType) { rv = NS_NewFirstLetterFrame(shell, &newFrame); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); } } else if (nsLayoutAtoms::imageFrame == frameType) { rv = NS_NewImageFrame(shell, &newFrame); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); } } else if (nsLayoutAtoms::placeholderFrame == frameType) { // create a continuing out of flow frame nsIFrame* oofFrame = nsPlaceholderFrame::GetRealFrameForPlaceholder(aFrame); nsIFrame* oofContFrame; rv = CreateContinuingFrame(aPresContext, oofFrame, aParentFrame, &oofContFrame); if (NS_FAILED(rv)) { *aContinuingFrame = nsnull; return rv; } // create a continuing placeholder frame rv = CreatePlaceholderFrameFor(shell, aPresContext, shell->FrameManager(), content, oofContFrame, styleContext, aParentFrame, &newFrame); if (NS_FAILED(rv)) { oofContFrame->Destroy(aPresContext); *aContinuingFrame = nsnull; return rv; } newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); } else if (nsLayoutAtoms::fieldSetFrame == frameType) { rv = NS_NewFieldSetFrame(aPresContext->PresShell(), &newFrame, NS_BLOCK_SPACE_MGR); if (NS_SUCCEEDED(rv)) { newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame); // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE); // Create a continuing area frame // XXXbz we really shouldn't have to do this by hand! nsIFrame* continuingAreaFrame; nsIFrame* areaFrame = GetFieldSetAreaFrame(aFrame); rv = CreateContinuingFrame(aPresContext, areaFrame, newFrame, &continuingAreaFrame); if (NS_FAILED(rv)) { newFrame->Destroy(aPresContext); *aContinuingFrame = nsnull; return rv; } // Set the fieldset's initial child list newFrame->SetInitialChildList(aPresContext, nsnull, continuingAreaFrame); } } else { NS_NOTREACHED("unexpected frame type"); rv = NS_ERROR_UNEXPECTED; } *aContinuingFrame = newFrame; if (NS_FAILED(rv)) { *aContinuingFrame = nsnull; return rv; } // Now deal with fixed-pos things.... They should appear on all pages, and // the placeholders must be kids of a block, so we want to move over the // placeholders when processing the child of the pageContentFrame. if (!aParentFrame) { return NS_OK; } if (aParentFrame->GetType() != nsLayoutAtoms::pageContentFrame) { if (nextInFlow) { nextInFlow->SetPrevInFlow(newFrame); newFrame->SetNextInFlow(nextInFlow); } return NS_OK; } // Our parent is a page content frame. Look up its page frame and // see whether it has a prev-in-flow. nsIFrame* pageFrame = aParentFrame->GetParent(); if (!pageFrame) { NS_ERROR("pageContentFrame does not have parent!"); newFrame->Destroy(aPresContext); *aContinuingFrame = nsnull; return NS_ERROR_UNEXPECTED; } nsIFrame* prevPage = pageFrame->GetPrevInFlow(); if (!prevPage) { return NS_OK; } // OK. now we need to do this fixed-pos game. // Get prevPage's page content frame nsIFrame* prevPageContentFrame = prevPage->GetFirstChild(nsnull); if (!prevPageContentFrame) { newFrame->Destroy(aPresContext); *aContinuingFrame = nsnull; return NS_ERROR_UNEXPECTED; } nsFrameItems fixedPlaceholders; nsIFrame* firstFixed = prevPageContentFrame->GetFirstChild(nsLayoutAtoms::fixedList); if (!firstFixed) { return NS_OK; } nsFrameConstructorState state(mPresShell, aParentFrame, mInitialContainingBlock, mInitialContainingBlock); // Iterate the fixed frames and replicate each for (nsIFrame* fixed = firstFixed; fixed; fixed = fixed->GetNextSibling()) { rv = ConstructFrame(state, fixed->GetContent(), newFrame, fixedPlaceholders); if (NS_FAILED(rv)) { newFrame->Destroy(aPresContext); *aContinuingFrame = nsnull; return rv; } } // Add the placeholders to our primary child list. // XXXbz this is a little screwed up, since the fixed frames will have the // wrong parent block and hence auto-positioning will be broken. Oh, well. newFrame->SetInitialChildList(aPresContext, nsnull, fixedPlaceholders.childList); return NS_OK; } // Helper function that searches the immediate child frames // (and their children if the frames are "special") // for a frame that maps the specified content object nsIFrame* nsCSSFrameConstructor::FindFrameWithContent(nsFrameManager* aFrameManager, nsIFrame* aParentFrame, nsIContent* aParentContent, nsIContent* aContent, nsFindFrameHint* aHint) { #ifdef NOISY_FINDFRAME FFWC_totalCount++; printf("looking for content=%p, given aParentFrame %p parentContent %p, hint is %s\n", aContent, aParentFrame, aParentContent, aHint ? "set" : "NULL"); #endif NS_ENSURE_TRUE(aParentFrame != nsnull, nsnull); do { // Search for the frame in each child list that aParentFrame supports nsIAtom* listName = nsnull; PRInt32 listIndex = 0; PRBool searchAgain; do { #ifdef NOISY_FINDFRAME FFWC_doLoop++; #endif nsIFrame* kidFrame = nsnull; searchAgain = PR_FALSE; // if we were given an hint, try to use it here to find a good // previous frame to start our search (|kidFrame|). if (aHint) { #ifdef NOISY_FINDFRAME printf(" hint frame is %p\n", aHint->mPrimaryFrameForPrevSibling); #endif // start with the primary frame for aContent's previous sibling kidFrame = aHint->mPrimaryFrameForPrevSibling; // But if it's out of flow, start from its placeholder. if (kidFrame && (kidFrame->GetStateBits() & NS_FRAME_OUT_OF_FLOW)) { kidFrame = aFrameManager->GetPlaceholderFrameFor(kidFrame); } if (kidFrame) { // then use the next sibling frame as our starting point kidFrame = kidFrame->GetNextSibling(); if (!kidFrame) { // the hint frame had no next frame. try the next-in-flow fo the parent of the hint frame // if there is one nsIFrame *parentFrame = aHint->mPrimaryFrameForPrevSibling->GetParent(); if (parentFrame) { parentFrame = GetNifOrSpecialSibling(aFrameManager, parentFrame); } if (parentFrame) { // if we found the next-in-flow for the parent of the hint frame, start with it's first child kidFrame = parentFrame->GetFirstChild(listName); // Leave |aParentFrame| as-is, since the only time we'll // reuse it is if the hint fails. NS_ASSERTION(!kidFrame || parentFrame->GetContent() == aParentContent, "next-in-flow has different content"); } } #ifdef NOISY_FINDFRAME printf(" hint gives us kidFrame=%p with parent frame %p content %p\n", kidFrame, aParentFrame, aParentContent); #endif } } if (!kidFrame) { // we didn't have enough info to prune, start searching from the beginning kidFrame = aParentFrame->GetFirstChild(listName); } while (kidFrame) { // See if the child frame points to the content object we're // looking for nsIContent* kidContent = kidFrame->GetContent(); if (kidContent == aContent) { // We found a match. Return the out-of-flow if it's a placeholder return nsPlaceholderFrame::GetRealFrameFor(kidFrame); } // only do this if there is content if (kidContent) { // We search the immediate children only, but if the child frame has // the same content pointer as its parent then we need to search its // child frames, too. // We also need to search if the child content is anonymous and scoped // to the parent content. if (aParentContent == kidContent || (aParentContent && (aParentContent == kidContent->GetBindingParent()))) { #ifdef NOISY_FINDFRAME FFWC_recursions++; printf(" recursing with new parent set to kidframe=%p, parentContent=%p\n", kidFrame, aParentContent.get()); #endif nsIFrame* matchingFrame = FindFrameWithContent(aFrameManager, kidFrame, aParentContent, aContent, nsnull); if (matchingFrame) { return matchingFrame; } } } // Get the next sibling frame kidFrame = kidFrame->GetNextSibling(); #ifdef NOISY_FINDFRAME FFWC_doSibling++; if (kidFrame) { printf(" searching sibling frame %p\n", kidFrame); } #endif } if (aHint) { // If we get here, and we had a hint, then we didn't find a frame. // The hint may have been a frame whose location in the frame tree // doesn't match the location of its corresponding element in the // DOM tree, e.g. a floated or absolutely positioned frame, or e.g. // a frame, in which case we'd be off in the weeds looking // through something other than the primary frame list. // Reboot the search from scratch, without the hint, but using the // null child list again. aHint = nsnull; searchAgain = PR_TRUE; } else { listName = aParentFrame->GetAdditionalChildListName(listIndex++); } } while(listName || searchAgain); // We didn't find a matching frame. If aFrame has a next-in-flow, // then continue looking there aParentFrame = GetNifOrSpecialSibling(aFrameManager, aParentFrame); #ifdef NOISY_FINDFRAME if (aParentFrame) { FFWC_nextInFlows++; printf(" searching NIF frame %p\n", aParentFrame); } #endif } while (aParentFrame); // No matching frame return nsnull; } // Request to find the primary frame associated with a given content object. // This is typically called by the pres shell when there is no mapping in // the pres shell hash table nsresult nsCSSFrameConstructor::FindPrimaryFrameFor(nsFrameManager* aFrameManager, nsIContent* aContent, nsIFrame** aFrame, nsFindFrameHint* aHint) { NS_ASSERTION(aFrameManager && aContent && aFrame, "bad arg"); *aFrame = nsnull; // initialize OUT parameter // We want to be able to quickly map from a content object to its frame, // but we also want to keep the hash table small. Therefore, many frames // are not added to the hash table when they're first created: // - text frames // - inline frames (often things like FONT and B) // - BR frames // - internal table frames (row-group, row, cell, col-group, col) // // That means we need to need to search for the frame nsIFrame* parentFrame; // this pointer is used to iterate across all frames that map to parentContent // Get the frame that corresponds to the parent content object. // Note that this may recurse indirectly, because the pres shell will // call us back if there is no mapping in the hash table nsCOMPtr parentContent = aContent->GetParent(); // Get this once if (parentContent) { parentFrame = aFrameManager->GetPrimaryFrameFor(parentContent); while (parentFrame) { // Search the child frames for a match *aFrame = FindFrameWithContent(aFrameManager, parentFrame, parentContent, aContent, aHint); #ifdef NOISY_FINDFRAME printf("FindFrameWithContent returned %p\n", *aFrame); #endif #ifdef DEBUG // if we're given a hint and we were told to verify, then compare the resulting frame with // the frame we get by calling FindFrameWithContent *without* the hint. // Assert if they do not match // Note that this makes finding frames *slower* than it was before the fix. if (gVerifyFastFindFrame && aHint) { #ifdef NOISY_FINDFRAME printf("VERIFYING...\n"); #endif nsIFrame *verifyTestFrame = FindFrameWithContent(aFrameManager, parentFrame, parentContent, aContent, nsnull); #ifdef NOISY_FINDFRAME printf("VERIFY returned %p\n", verifyTestFrame); #endif NS_ASSERTION(verifyTestFrame == *aFrame, "hint shortcut found wrong frame"); } #endif // If we found a match, then add a mapping to the hash table so // next time this will be quick if (*aFrame) { aFrameManager->SetPrimaryFrameFor(aContent, *aFrame); break; } else if (IsFrameSpecial(parentFrame)) { // If it's a "special" frame (that is, part of an inline // that's been split because it contained a block), we need to // follow the out-of-flow "special sibling" link, and search // *that* subtree as well. nsIFrame* specialSibling = nsnull; GetSpecialSibling(aFrameManager, parentFrame, &specialSibling); parentFrame = specialSibling; } else { break; } } } if (aHint && !*aFrame) { // if we had a hint, and we didn't get a frame, see if we should try the slow way if (aContent->IsContentOfType(nsIContent::eTEXT)) { #ifdef NOISY_FINDFRAME FFWC_slowSearchForText++; #endif // since we're passing in a null hint, we're guaranteed to only recurse once return FindPrimaryFrameFor(aFrameManager, aContent, aFrame, nsnull); } } #ifdef NOISY_FINDFRAME printf("%10s %10s %10s %10s %10s \n", "total", "doLoop", "doSibling", "recur", "nextIF", "slowSearch"); printf("%10d %10d %10d %10d %10d \n", FFWC_totalCount, FFWC_doLoop, FFWC_doSibling, FFWC_recursions, FFWC_nextInFlows, FFWC_slowSearchForText); #endif return NS_OK; } nsresult nsCSSFrameConstructor::GetInsertionPoint(nsIFrame* aParentFrame, nsIContent* aChildContent, nsIFrame** aInsertionPoint, PRBool* aMultiple) { // Make the insertion point be the parent frame by default, in case // we have to bail early. *aInsertionPoint = aParentFrame; nsIContent* container = aParentFrame->GetContent(); if (!container) return NS_OK; nsIBindingManager *bindingManager = mDocument->BindingManager(); nsIContent* insertionElement; if (aChildContent) { // We've got an explicit insertion child. Check to see if it's // anonymous. if (aChildContent->GetBindingParent() == container) { // This child content is anonymous. Don't use the insertion // point, since that's only for the explicit kids. return NS_OK; } PRUint32 index; insertionElement = bindingManager->GetInsertionPoint(container, aChildContent, &index); } else { PRBool multiple; PRUint32 index; insertionElement = bindingManager->GetSingleInsertionPoint(container, &index, &multiple); if (multiple && aMultiple) *aMultiple = multiple; // Record the fact that filters are in use. } if (insertionElement) { nsIFrame* insertionPoint = nsnull; mPresShell->GetPrimaryFrameFor(insertionElement, &insertionPoint); if (insertionPoint) { // Use the content insertion frame of the insertion point. insertionPoint = insertionPoint->GetContentInsertionFrame(); if (insertionPoint && insertionPoint != aParentFrame) GetInsertionPoint(insertionPoint, aChildContent, aInsertionPoint, aMultiple); } else { // There was no frame created yet for the insertion point. *aInsertionPoint = nsnull; } } // fieldsets have multiple insertion points. Note that we might // have to look at insertionElement here... if (aMultiple && !*aMultiple) { nsIContent* content = insertionElement ? insertionElement : container; if (content->IsContentOfType(nsIContent::eHTML) && content->Tag() == nsHTMLAtoms::fieldset) { *aMultiple = PR_TRUE; } } return NS_OK; } // Capture state for the frame tree rooted at the frame associated with the // content object, aContent nsresult nsCSSFrameConstructor::CaptureStateForFramesOf(nsIContent* aContent, nsILayoutHistoryState* aHistoryState) { nsresult rv = NS_OK; nsIFrame* frame; rv = mPresShell->GetPrimaryFrameFor(aContent, &frame); if (NS_SUCCEEDED(rv) && frame) { CaptureStateFor(frame, aHistoryState); } return rv; } // Capture state for the frame tree rooted at aFrame. nsresult nsCSSFrameConstructor::CaptureStateFor(nsIFrame* aFrame, nsILayoutHistoryState* aHistoryState) { if (aFrame && aHistoryState) { mPresShell->FrameManager()->CaptureFrameState(aFrame, aHistoryState); } return NS_OK; } nsresult nsCSSFrameConstructor::MaybeRecreateFramesForContent(nsIContent* aContent) { nsresult result = NS_OK; nsFrameManager *frameManager = mPresShell->FrameManager(); nsStyleContext *oldContext = frameManager->GetUndisplayedContent(aContent); if (oldContext) { // The parent has a frame, so try resolving a new context. nsRefPtr newContext = mPresShell->StyleSet()-> ResolveStyleFor(aContent, oldContext->GetParent()); frameManager->ChangeUndisplayedContent(aContent, newContext); if (newContext->GetStyleDisplay()->mDisplay != NS_STYLE_DISPLAY_NONE) { result = RecreateFramesForContent(aContent); } } return result; } PRBool nsCSSFrameConstructor::MaybeRecreateContainerForIBSplitterFrame(nsIFrame* aFrame, nsresult* aResult) { if (!aFrame || !IsFrameSpecial(aFrame)) return PR_FALSE; #ifdef DEBUG if (gNoisyContentUpdates) { printf("nsCSSFrameConstructor::RecreateFramesForContent: frame="); nsFrame::ListTag(stdout, aFrame); printf(" is special\n"); } #endif *aResult = ReframeContainingBlock(aFrame); return PR_TRUE; } nsresult nsCSSFrameConstructor::RecreateFramesForContent(nsIContent* aContent) { // If there is no document, we don't want to recreate frames for it. (You // shouldn't generally be giving this method content without a document // anyway). // Rebuilding the frame tree can have bad effects, especially if it's the // frame tree for chrome (see bug 157322). NS_ENSURE_TRUE(aContent->GetDocument(), NS_ERROR_FAILURE); // Is the frame `special'? If so, we need to reframe the containing // block *here*, rather than trying to remove and re-insert the // content (which would otherwise result in *two* nested reframe // containing block from ContentRemoved() and ContentInserted(), // below!) nsIFrame* frame; mPresShell->GetPrimaryFrameFor(aContent, &frame); nsPresContext* presContext = mPresShell->GetPresContext(); nsresult rv = NS_OK; if (frame) { // If the background of the frame is painted on one of its ancestors, // the frame reconstruct might not invalidate correctly. nsIFrame *ancestor = frame; const nsStyleBackground *bg; PRBool isCanvas; while (!nsCSSRendering::FindBackground(presContext, ancestor, &bg, &isCanvas)) { ancestor = ancestor->GetParent(); NS_ASSERTION(ancestor, "canvas must paint"); } // This isn't the most efficient way to do it, but it saves code // size and doesn't add much cost compared to the frame reconstruct. if (ancestor != frame) ApplyRenderingChangeToTree(presContext, ancestor, nsnull, nsChangeHint_RepaintFrame); // If the frame is an anonymous frame created as part of // inline-in-block splitting --- or if its parent is // such an anonymous frame (i.e., this frame was the cause // of such splitting), then recreate the containing block. if (MaybeRecreateContainerForIBSplitterFrame(frame, &rv) || MaybeRecreateContainerForIBSplitterFrame(frame->GetParent(), &rv)) return rv; } nsCOMPtr container = aContent->GetParent(); if (container) { PRInt32 indexInContainer = container->IndexOf(aContent); // Before removing the frames associated with the content object, // ask them to save their state onto a temporary state object. CaptureStateForFramesOf(aContent, mTempFrameTreeState); // Save parent frame because this frame is going away. But if // this is an out-of-flow, we want to get the _placeholder_'s // parent. nsIFrame* parent = nsnull; if (frame) { if (frame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) { mPresShell->GetPlaceholderFrameFor(frame, &frame); NS_ASSERTION(frame, "Out-of-flow with no placeholder?"); } frame = frame->GetParent(); } // Remove the frames associated with the content object on which // the attribute change occurred. rv = ContentRemoved(container, aContent, indexInContainer, PR_FALSE); if (NS_SUCCEEDED(rv)) { // Now, recreate the frames associated with this content object. rv = ContentInserted(container, parent, aContent, indexInContainer, mTempFrameTreeState, PR_FALSE); } } else { // The content is the root node, so just rebuild the world. ReconstructDocElementHierarchy(); } return rv; } ////////////////////////////////////////////////////////////////////// // Block frame construction code already_AddRefed nsCSSFrameConstructor::GetFirstLetterStyle(nsIContent* aContent, nsStyleContext* aStyleContext) { if (aContent) { return mPresShell->StyleSet()-> ResolvePseudoStyleFor(aContent, nsCSSPseudoElements::firstLetter, aStyleContext); } return nsnull; } already_AddRefed nsCSSFrameConstructor::GetFirstLineStyle(nsIContent* aContent, nsStyleContext* aStyleContext) { if (aContent) { return mPresShell->StyleSet()-> ResolvePseudoStyleFor(aContent, nsCSSPseudoElements::firstLine, aStyleContext); } return nsnull; } // Predicate to see if a given content (block element) has // first-letter style applied to it. PRBool nsCSSFrameConstructor::HaveFirstLetterStyle(nsIContent* aContent, nsStyleContext* aStyleContext) { return nsLayoutUtils::HasPseudoStyle(aContent, aStyleContext, nsCSSPseudoElements::firstLetter, mPresShell->GetPresContext()); } PRBool nsCSSFrameConstructor::HaveFirstLetterStyle(nsIFrame* aBlockFrame) { NS_PRECONDITION(aBlockFrame, "Need a frame"); #ifdef DEBUG nsBlockFrame* block; NS_ASSERTION(NS_SUCCEEDED(aBlockFrame->QueryInterface(kBlockFrameCID, (void**)&block)) && block, "Not a block frame?"); #endif return (aBlockFrame->GetStateBits() & NS_BLOCK_HAS_FIRST_LETTER_STYLE) != 0; } PRBool nsCSSFrameConstructor::HaveFirstLineStyle(nsIContent* aContent, nsStyleContext* aStyleContext) { return nsLayoutUtils::HasPseudoStyle(aContent, aStyleContext, nsCSSPseudoElements::firstLine, mPresShell->GetPresContext()); } void nsCSSFrameConstructor::HaveSpecialBlockStyle(nsIContent* aContent, nsStyleContext* aStyleContext, PRBool* aHaveFirstLetterStyle, PRBool* aHaveFirstLineStyle) { *aHaveFirstLetterStyle = HaveFirstLetterStyle(aContent, aStyleContext); *aHaveFirstLineStyle = HaveFirstLineStyle(aContent, aStyleContext); } /** * Request to process the child content elements and create frames. * * @param aContent the content object whose child elements to process * @param aFrame the the associated with aContent. This will be the * parent frame (both content and geometric) for the flowed * child frames */ nsresult nsCSSFrameConstructor::ProcessChildren(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aFrame, PRBool aCanHaveGeneratedContent, nsFrameItems& aFrameItems, PRBool aParentIsBlock, nsTableCreator* aTableCreator) { NS_PRECONDITION(!aFrame->IsLeaf(), "Bogus ProcessChildren caller!"); // XXXbz ideally, this would do all the pushing of various // containing blocks as needed, so callers don't have to do it... nsresult rv = NS_OK; // :before/:after content should have the same style context parent // as normal kids. nsStyleContext* styleContext = nsFrame::CorrectStyleParentFrame(aFrame, nsnull)->GetStyleContext(); if (aCanHaveGeneratedContent) { // Probe for generated content before nsIFrame* generatedFrame; if (CreateGeneratedContentFrame(aState, aFrame, aContent, styleContext, nsCSSPseudoElements::before, &generatedFrame)) { // Add the generated frame to the child list aFrameItems.AddChild(generatedFrame); } } if (aTableCreator) { // do special table child processing // if there is a caption child here, it gets recorded in aState.mPseudoFrames. nsIFrame* captionFrame; TableProcessChildren(aState, aContent, aFrame, *aTableCreator, aFrameItems, captionFrame); } else { // save the incoming pseudo frame state nsPseudoFrames priorPseudoFrames; aState.mPseudoFrames.Reset(&priorPseudoFrames); ChildIterator iter, last; for (ChildIterator::Init(aContent, &iter, &last); iter != last; ++iter) { rv = ConstructFrame(aState, nsCOMPtr(*iter), aFrame, aFrameItems); if (NS_FAILED(rv)) return rv; } // process the current pseudo frame state if (!aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); } // restore the incoming pseudo frame state aState.mPseudoFrames = priorPseudoFrames; } if (aCanHaveGeneratedContent) { // Probe for generated content after nsIFrame* generatedFrame; if (CreateGeneratedContentFrame(aState, aFrame, aContent, styleContext, nsCSSPseudoElements::after, &generatedFrame)) { // Add the generated frame to the child list aFrameItems.AddChild(generatedFrame); } } if (aParentIsBlock) { if (aState.mFirstLetterStyle) { rv = WrapFramesInFirstLetterFrame(aState, aContent, aFrame, aFrameItems); } if (aState.mFirstLineStyle) { rv = WrapFramesInFirstLineFrame(aState, aContent, aFrame, aFrameItems); } } return rv; } //---------------------------------------------------------------------- // Support for :first-line style static void ReparentFrame(nsFrameManager* aFrameManager, nsIFrame* aNewParentFrame, nsIFrame* aFrame) { aFrame->SetParent(aNewParentFrame); aFrameManager->ReParentStyleContext(aFrame); } // Special routine to handle placing a list of frames into a block // frame that has first-line style. The routine ensures that the first // collection of inline frames end up in a first-line frame. nsresult nsCSSFrameConstructor::WrapFramesInFirstLineFrame( nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aFrame, nsFrameItems& aFrameItems) { nsresult rv = NS_OK; // Find the first and last inline frame in aFrameItems nsIFrame* kid = aFrameItems.childList; nsIFrame* firstInlineFrame = nsnull; nsIFrame* lastInlineFrame = nsnull; while (kid) { if (IsInlineFrame(kid)) { if (!firstInlineFrame) firstInlineFrame = kid; lastInlineFrame = kid; } else { break; } kid = kid->GetNextSibling(); } // If we don't find any inline frames, then there is nothing to do if (!firstInlineFrame) { return rv; } // Create line frame nsStyleContext* parentStyle = aFrame->GetStyleContext(); nsRefPtr firstLineStyle = GetFirstLineStyle(aContent, parentStyle); nsIFrame* lineFrame; rv = NS_NewFirstLineFrame(mPresShell, &lineFrame); if (NS_SUCCEEDED(rv)) { // Initialize the line frame rv = InitAndRestoreFrame(aState, aContent, aFrame, firstLineStyle, nsnull, lineFrame); // Mangle the list of frames we are giving to the block: first // chop the list in two after lastInlineFrame nsIFrame* secondBlockFrame = lastInlineFrame->GetNextSibling(); lastInlineFrame->SetNextSibling(nsnull); // The lineFrame will be the block's first child; the rest of the // frame list (after lastInlineFrame) will be the second and // subsequent children; join the list together and reset // aFrameItems appropriately. if (secondBlockFrame) { lineFrame->SetNextSibling(secondBlockFrame); } if (aFrameItems.childList == lastInlineFrame) { // Just in case the block had exactly one inline child aFrameItems.lastChild = lineFrame; } aFrameItems.childList = lineFrame; // Give the inline frames to the lineFrame after reparenting them kid = firstInlineFrame; NS_ASSERTION(lineFrame->GetStyleContext() == firstLineStyle, "Bogus style context on line frame"); while (kid) { ReparentFrame(aState.mFrameManager, lineFrame, kid); kid = kid->GetNextSibling(); } lineFrame->SetInitialChildList(aState.mPresContext, nsnull, firstInlineFrame); } return rv; } // Special routine to handle appending a new frame to a block frame's // child list. Takes care of placing the new frame into the right // place when first-line style is present. nsresult nsCSSFrameConstructor::AppendFirstLineFrames( nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aBlockFrame, nsFrameItems& aFrameItems) { // It's possible that aBlockFrame needs to have a first-line frame // created because it doesn't currently have any children. nsIFrame* blockKid = aBlockFrame->GetFirstChild(nsnull); if (!blockKid) { return WrapFramesInFirstLineFrame(aState, aContent, aBlockFrame, aFrameItems); } // Examine the last block child - if it's a first-line frame then // appended frames need special treatment. nsresult rv = NS_OK; nsFrameList blockFrames(blockKid); nsIFrame* lastBlockKid = blockFrames.LastChild(); if (lastBlockKid->GetType() != nsLayoutAtoms::lineFrame) { // No first-line frame at the end of the list, therefore there is // an interveening block between any first-line frame the frames // we are appending. Therefore, we don't need any special // treatment of the appended frames. return rv; } nsIFrame* lineFrame = lastBlockKid; // Find the first and last inline frame in aFrameItems nsIFrame* kid = aFrameItems.childList; nsIFrame* firstInlineFrame = nsnull; nsIFrame* lastInlineFrame = nsnull; while (kid) { if (IsInlineFrame(kid)) { if (!firstInlineFrame) firstInlineFrame = kid; lastInlineFrame = kid; } else { break; } kid = kid->GetNextSibling(); } // If we don't find any inline frames, then there is nothing to do if (!firstInlineFrame) { return rv; } // The inline frames get appended to the lineFrame. Make sure they // are reparented properly. nsIFrame* remainingFrames = lastInlineFrame->GetNextSibling(); lastInlineFrame->SetNextSibling(nsnull); kid = firstInlineFrame; while (kid) { ReparentFrame(aState.mFrameManager, lineFrame, kid); kid = kid->GetNextSibling(); } aState.mFrameManager->AppendFrames(lineFrame, nsnull, firstInlineFrame); // The remaining frames get appended to the block frame if (remainingFrames) { aFrameItems.childList = remainingFrames; } else { aFrameItems.childList = nsnull; aFrameItems.lastChild = nsnull; } return rv; } // Special routine to handle inserting a new frame into a block // frame's child list. Takes care of placing the new frame into the // right place when first-line style is present. nsresult nsCSSFrameConstructor::InsertFirstLineFrames( nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aBlockFrame, nsIFrame** aParentFrame, nsIFrame* aPrevSibling, nsFrameItems& aFrameItems) { nsresult rv = NS_OK; #if 0 nsIFrame* parentFrame = *aParentFrame; nsIFrame* newFrame = aFrameItems.childList; PRBool isInline = IsInlineFrame(newFrame); if (!aPrevSibling) { // Insertion will become the first frame. Two cases: we either // already have a first-line frame or we don't. nsIFrame* firstBlockKid = aBlockFrame->GetFirstChild(nsnull); if (firstBlockKid->GetType() == nsLayoutAtoms::lineFrame) { // We already have a first-line frame nsIFrame* lineFrame = firstBlockKid; if (isInline) { // Easy case: the new inline frame will go into the lineFrame. ReparentFrame(aState.mFrameManager, lineFrame, newFrame); aState.mFrameManager->InsertFrames(lineFrame, nsnull, nsnull, newFrame); // Since the frame is going into the lineFrame, don't let it // go into the block too. aFrameItems.childList = nsnull; aFrameItems.lastChild = nsnull; } else { // Harder case: We are about to insert a block level element // before the first-line frame. // XXX need a method to steal away frames from the line-frame } } else { // We do not have a first-line frame if (isInline) { // We now need a first-line frame to contain the inline frame. nsIFrame* lineFrame; rv = NS_NewFirstLineFrame(&lineFrame); if (NS_SUCCEEDED(rv)) { // Lookup first-line style context nsStyleContext* parentStyle = aBlockFrame->GetStyleContext(); nsRefPtr firstLineStyle = GetFirstLineStyle(aContent, parentStyle); // Initialize the line frame rv = InitAndRestoreFrame(aState, aContent, aBlockFrame, firstLineStyle, nsnull, lineFrame); // Make sure the caller inserts the lineFrame into the // blocks list of children. aFrameItems.childList = lineFrame; aFrameItems.lastChild = lineFrame; // Give the inline frames to the lineFrame after // reparenting them NS_ASSERTION(lineFrame->GetStyleContext() == firstLineStyle, "Bogus style context on line frame"); ReparentFrame(aPresContext, lineFrame, newFrame); lineFrame->SetInitialChildList(aState.mPresContext, nsnull, newFrame); } } else { // Easy case: the regular insertion logic can insert the new // frame because its a block frame. } } } else { // Insertion will not be the first frame. nsIFrame* prevSiblingParent = aPrevSibling->GetParent(); if (prevSiblingParent == aBlockFrame) { // Easy case: The prev-siblings parent is the block // frame. Therefore the prev-sibling is not currently in a // line-frame. Therefore the new frame which is going after it, // regardless of type, is not going into a line-frame. } else { // If the prevSiblingParent is not the block-frame then it must // be a line-frame (if it were a letter-frame, that logic would // already have adjusted the prev-sibling to be the // letter-frame). if (isInline) { // Easy case: the insertion can go where the caller thinks it // should go (which is into prevSiblingParent). } else { // Block elements don't end up in line-frames, therefore // change the insertion point to aBlockFrame. However, there // might be more inline elements following aPrevSibling that // need to be pulled out of the line-frame and become children // of the block. nsIFrame* nextSibling = aPrevSibling->GetNextSibling(); nsIFrame* nextLineFrame = prevSiblingParent->GetNextInFlow(); if (nextSibling || nextLineFrame) { // Oy. We have work to do. Create a list of the new frames // that are going into the block by stripping them away from // the line-frame(s). nsFrameList list(nextSibling); if (nextSibling) { nsLineFrame* lineFrame = (nsLineFrame*) prevSiblingParent; lineFrame->StealFramesFrom(nextSibling); } nsLineFrame* nextLineFrame = (nsLineFrame*) lineFrame; for (;;) { nextLineFrame = nextLineFrame->GetNextInFlow(); if (!nextLineFrame) { break; } nsIFrame* kids = nextLineFrame->GetFirstChild(nsnull); } } else { // We got lucky: aPrevSibling was the last inline frame in // the line-frame. ReparentFrame(aState.mFrameManager, aBlockFrame, newFrame); aState.mFrameManager->InsertFrames(aBlockFrame, nsnull, prevSiblingParent, newFrame); aFrameItems.childList = nsnull; aFrameItems.lastChild = nsnull; } } } } #endif return rv; } //---------------------------------------------------------------------- // First-letter support // Determine how many characters in the text fragment apply to the // first letter static PRInt32 FirstLetterCount(const nsTextFragment* aFragment) { PRInt32 count = 0; PRInt32 firstLetterLength = 0; PRBool done = PR_FALSE; PRInt32 i, n = aFragment->GetLength(); for (i = 0; i < n; i++) { PRUnichar ch = aFragment->CharAt(i); if (XP_IS_SPACE(ch)) { if (firstLetterLength) { done = PR_TRUE; break; } count++; continue; } // XXX I18n if ((ch == '\'') || (ch == '\"')) { if (firstLetterLength) { done = PR_TRUE; break; } // keep looping firstLetterLength = 1; } else { count++; done = PR_TRUE; break; } } return count; } static PRBool NeedFirstLetterContinuation(nsIContent* aContent) { NS_PRECONDITION(aContent, "null ptr"); PRBool result = PR_FALSE; if (aContent) { nsCOMPtr tc(do_QueryInterface(aContent)); if (tc) { const nsTextFragment* frag = tc->Text(); PRInt32 flc = FirstLetterCount(frag); PRInt32 tl = frag->GetLength(); if (flc < tl) { result = PR_TRUE; } } } return result; } static PRBool IsFirstLetterContent(nsIContent* aContent) { PRBool result = PR_FALSE; nsCOMPtr textContent = do_QueryInterface(aContent); if (textContent && textContent->TextLength()) { result = !textContent->IsOnlyWhitespace(); } return result; } /** * Create a letter frame, only make it a floating frame. */ void nsCSSFrameConstructor::CreateFloatingLetterFrame( nsFrameConstructorState& aState, nsIContent* aTextContent, nsIFrame* aTextFrame, nsIContent* aBlockContent, nsIFrame* aParentFrame, nsStyleContext* aStyleContext, nsFrameItems& aResult) { // Create the first-letter-frame nsresult rv; nsIFrame* letterFrame; nsStyleSet *styleSet = mPresShell->StyleSet(); NS_NewFirstLetterFrame(mPresShell, &letterFrame); // We don't want to use a text content for a non-text frame (because we want // its primary frame to be a text frame). So use its parent for the // first-letter. nsIContent* letterContent = aTextContent->GetParent(); NS_ASSERTION(letterContent->GetBindingParent() != letterContent, "Reframes of this letter frame will mess with the root of a " "native anonymous content subtree!"); InitAndRestoreFrame(aState, letterContent, aState.GetGeometricParent(aStyleContext->GetStyleDisplay(), aParentFrame), aStyleContext, nsnull, letterFrame); // Init the text frame to refer to the letter frame. Make sure we // get a proper style context for it (the one passed in is for the // letter frame and will have the float property set on it; the text // frame shouldn't have that set). nsRefPtr textSC; textSC = styleSet->ResolveStyleForNonElement(aStyleContext); InitAndRestoreFrame(aState, aTextContent, letterFrame, textSC, nsnull, aTextFrame); // And then give the text frame to the letter frame letterFrame->SetInitialChildList(aState.mPresContext, nsnull, aTextFrame); // Now make the placeholder nsIFrame* placeholderFrame; CreatePlaceholderFrameFor(mPresShell, aState.mPresContext, aState.mFrameManager, letterContent, letterFrame, aStyleContext, aParentFrame, &placeholderFrame); // See if we will need to continue the text frame (does it contain // more than just the first-letter text or not?) If it does, then we // create (in advance) a continuation frame for it. nsIFrame* nextTextFrame = nsnull; if (NeedFirstLetterContinuation(aTextContent)) { // Create continuation rv = CreateContinuingFrame(aState.mPresContext, aTextFrame, aParentFrame, &nextTextFrame); if (NS_FAILED(rv)) { letterFrame->Destroy(aState.mPresContext); return; } // Repair the continuations style context nsStyleContext* parentStyleContext = aStyleContext->GetParent(); if (parentStyleContext) { nsRefPtr newSC; newSC = styleSet->ResolveStyleForNonElement(parentStyleContext); if (newSC) { nextTextFrame->SetStyleContext(aState.mPresContext, newSC); } } } // Update the child lists for the frame containing the floating first // letter frame. aState.mFloatedItems.AddChild(letterFrame); aResult.childList = aResult.lastChild = placeholderFrame; if (nextTextFrame) { aResult.AddChild(nextTextFrame); } } /** * Create a new letter frame for aTextFrame. The letter frame will be * a child of aParentFrame. */ nsresult nsCSSFrameConstructor::CreateLetterFrame(nsFrameConstructorState& aState, nsIContent* aTextContent, nsIFrame* aParentFrame, nsFrameItems& aResult) { NS_PRECONDITION(aTextContent->IsContentOfType(nsIContent::eTEXT), "aTextContent isn't text"); // Get style context for the first-letter-frame nsStyleContext* parentStyleContext = aParentFrame->GetStyleContext(); if (parentStyleContext) { // Use content from containing block so that we can actually // find a matching style rule. nsIContent* blockContent = aState.mFloatedItems.containingBlock->GetContent(); // Create first-letter style rule nsRefPtr sc = GetFirstLetterStyle(blockContent, parentStyleContext); if (sc) { // Create a new text frame (the original one will be discarded) nsIFrame* textFrame; NS_NewTextFrame(mPresShell, &textFrame); // Create the right type of first-letter frame const nsStyleDisplay* display = sc->GetStyleDisplay(); if (display->IsFloating()) { // Make a floating first-letter frame CreateFloatingLetterFrame(aState, aTextContent, textFrame, blockContent, aParentFrame, sc, aResult); } else { // Make an inflow first-letter frame nsIFrame* letterFrame; nsresult rv = NS_NewFirstLetterFrame(mPresShell, &letterFrame); if (NS_SUCCEEDED(rv)) { // Initialize the first-letter-frame. We don't want to use a text // content for a non-text frame (because we want its primary frame to // be a text frame). So use its parent for the first-letter. nsIContent* letterContent = aTextContent->GetParent(); NS_ASSERTION(letterContent->GetBindingParent() != letterContent, "Reframes of this letter frame will mess with the root " "of a native anonymous content subtree!"); letterFrame->Init(aState.mPresContext, letterContent, aParentFrame, sc, nsnull); nsRefPtr textSC; textSC = mPresShell->StyleSet()->ResolveStyleForNonElement(sc); InitAndRestoreFrame(aState, aTextContent, letterFrame, textSC, nsnull, textFrame); letterFrame->SetInitialChildList(aState.mPresContext, nsnull, textFrame); aResult.childList = aResult.lastChild = letterFrame; } } } } return NS_OK; } nsresult nsCSSFrameConstructor::WrapFramesInFirstLetterFrame( nsFrameConstructorState& aState, nsIContent* aBlockContent, nsIFrame* aBlockFrame, nsFrameItems& aBlockFrames) { nsresult rv = NS_OK; aBlockFrame->AddStateBits(NS_BLOCK_HAS_FIRST_LETTER_STYLE); nsIFrame* parentFrame = nsnull; nsIFrame* textFrame = nsnull; nsIFrame* prevFrame = nsnull; nsFrameItems letterFrames; PRBool stopLooking = PR_FALSE; rv = WrapFramesInFirstLetterFrame(aState, aBlockFrame, aBlockFrames.childList, &parentFrame, &textFrame, &prevFrame, letterFrames, &stopLooking); if (NS_FAILED(rv)) { return rv; } if (parentFrame) { if (parentFrame == aBlockFrame) { // Text textFrame out of the blocks frame list and substitute the // letter frame(s) instead. nsIFrame* nextSibling = textFrame->GetNextSibling(); textFrame->SetNextSibling(nsnull); if (prevFrame) { prevFrame->SetNextSibling(letterFrames.childList); } else { aBlockFrames.childList = letterFrames.childList; } letterFrames.lastChild->SetNextSibling(nextSibling); // Destroy the old textFrame textFrame->Destroy(aState.mPresContext); // Repair lastChild; the only time this needs to happen is when // the block had one child (the text frame). if (!nextSibling) { aBlockFrames.lastChild = letterFrames.lastChild; } } else { // Take the old textFrame out of the inline parents child list ::DeletingFrameSubtree(aState.mPresContext, aState.mFrameManager, textFrame); parentFrame->RemoveFrame(nsnull, textFrame); // Insert in the letter frame(s) parentFrame->InsertFrames(nsnull, prevFrame, letterFrames.childList); } } return rv; } nsresult nsCSSFrameConstructor::WrapFramesInFirstLetterFrame( nsFrameConstructorState& aState, nsIFrame* aParentFrame, nsIFrame* aParentFrameList, nsIFrame** aModifiedParent, nsIFrame** aTextFrame, nsIFrame** aPrevFrame, nsFrameItems& aLetterFrames, PRBool* aStopLooking) { nsresult rv = NS_OK; nsIFrame* prevFrame = nsnull; nsIFrame* frame = aParentFrameList; while (frame) { nsIFrame* nextFrame = frame->GetNextSibling(); nsIAtom* frameType = frame->GetType(); if (nsLayoutAtoms::textFrame == frameType) { // Wrap up first-letter content in a letter frame nsIContent* textContent = frame->GetContent(); if (IsFirstLetterContent(textContent)) { // Create letter frame to wrap up the text rv = CreateLetterFrame(aState, textContent, aParentFrame, aLetterFrames); if (NS_FAILED(rv)) { return rv; } // Provide adjustment information for parent *aModifiedParent = aParentFrame; *aTextFrame = frame; *aPrevFrame = prevFrame; *aStopLooking = PR_TRUE; return NS_OK; } } else if ((nsLayoutAtoms::inlineFrame == frameType) || (nsLayoutAtoms::lineFrame == frameType) || (nsLayoutAtoms::positionedInlineFrame == frameType)) { nsIFrame* kids = frame->GetFirstChild(nsnull); WrapFramesInFirstLetterFrame(aState, frame, kids, aModifiedParent, aTextFrame, aPrevFrame, aLetterFrames, aStopLooking); if (*aStopLooking) { return NS_OK; } } else { // This will stop us looking to create more letter frames. For // example, maybe the frame-type is "letterFrame" or // "placeholderFrame". This keeps us from creating extra letter // frames, and also prevents us from creating letter frames when // the first real content child of a block is not text (e.g. an // image, hr, etc.) *aStopLooking = PR_TRUE; break; } prevFrame = frame; frame = nextFrame; } return rv; } nsresult nsCSSFrameConstructor::RemoveFloatingFirstLetterFrames( nsPresContext* aPresContext, nsIPresShell* aPresShell, nsFrameManager* aFrameManager, nsIFrame* aBlockFrame, PRBool* aStopLooking) { // First look for the float frame that is a letter frame nsIFrame* floatFrame = aBlockFrame->GetFirstChild(nsLayoutAtoms::floatList); while (floatFrame) { // See if we found a floating letter frame if (nsLayoutAtoms::letterFrame == floatFrame->GetType()) { break; } floatFrame = floatFrame->GetNextSibling(); } if (!floatFrame) { // No such frame return NS_OK; } // Take the text frame away from the letter frame (so it isn't // destroyed when we destroy the letter frame). nsIFrame* textFrame = floatFrame->GetFirstChild(nsnull); if (!textFrame) { return NS_OK; } // Discover the placeholder frame for the letter frame nsIFrame* parentFrame; nsPlaceholderFrame* placeholderFrame = aFrameManager->GetPlaceholderFrameFor(floatFrame); if (!placeholderFrame) { // Somethings really wrong return NS_OK; } parentFrame = placeholderFrame->GetParent(); if (!parentFrame) { // Somethings really wrong return NS_OK; } // Create a new text frame with the right style context that maps // all of the content that was previously part of the letter frame // (and probably continued elsewhere). nsStyleContext* parentSC = parentFrame->GetStyleContext(); if (!parentSC) { return NS_OK; } nsIContent* textContent = textFrame->GetContent(); if (!textContent) { return NS_OK; } nsRefPtr newSC; newSC = aPresShell->StyleSet()->ResolveStyleForNonElement(parentSC); if (!newSC) { return NS_OK; } nsIFrame* newTextFrame; nsresult rv = NS_NewTextFrame(aPresShell, &newTextFrame); if (NS_FAILED(rv)) { return rv; } newTextFrame->Init(aPresContext, textContent, parentFrame, newSC, nsnull); // Destroy the old text frame's continuations (the old text frame // will be destroyed when its letter frame is destroyed). nsIFrame* nextTextFrame = textFrame->GetNextInFlow(); if (nextTextFrame) { nsIFrame* nextTextParent = nextTextFrame->GetParent(); if (nextTextParent) { nsSplittableFrame::BreakFromPrevFlow(nextTextFrame); ::DeletingFrameSubtree(aPresContext, aFrameManager, nextTextFrame); aFrameManager->RemoveFrame(nextTextParent, nsnull, nextTextFrame); } } // First find out where (in the content) the placeholder frames // text is and its previous sibling frame, if any. Note that: // 1) The placeholder had better be in the principal child list of // parentFrame. // 2) It's probably near the beginning (since we're a first-letter frame), // so just doing a linear search for the prevSibling is ok. // 3) Trying to use FindPreviousSibling will fail if the first-letter is in // anonymous content (eg generated content). nsFrameList siblingList(parentFrame->GetFirstChild(nsnull)); NS_ASSERTION(siblingList.ContainsFrame(placeholderFrame), "Placeholder not in parent's principal child list?"); nsIFrame* prevSibling = siblingList.GetPrevSiblingFor(placeholderFrame); // Now that everything is set... #ifdef NOISY_FIRST_LETTER printf("RemoveFloatingFirstLetterFrames: textContent=%p oldTextFrame=%p newTextFrame=%p\n", textContent.get(), textFrame, newTextFrame); #endif // Should we call DeletingFrameSubtree on the placeholder instead // and skip this call? aFrameManager->UnregisterPlaceholderFrame(placeholderFrame); // Remove the float frame ::DeletingFrameSubtree(aPresContext, aFrameManager, floatFrame); aFrameManager->RemoveFrame(aBlockFrame, nsLayoutAtoms::floatList, floatFrame); // Remove placeholder frame aFrameManager->RemoveFrame(parentFrame, nsnull, placeholderFrame); // Insert text frame in its place aFrameManager->InsertFrames(parentFrame, nsnull, prevSibling, newTextFrame); return NS_OK; } nsresult nsCSSFrameConstructor::RemoveFirstLetterFrames(nsPresContext* aPresContext, nsIPresShell* aPresShell, nsFrameManager* aFrameManager, nsIFrame* aFrame, PRBool* aStopLooking) { nsIFrame* prevSibling = nsnull; nsIFrame* kid = aFrame->GetFirstChild(nsnull); while (kid) { nsIAtom* frameType = kid->GetType(); if (nsLayoutAtoms::letterFrame == frameType) { // Bingo. Found it. First steal away the text frame. nsIFrame* textFrame = kid->GetFirstChild(nsnull); if (!textFrame) { break; } // Create a new textframe nsStyleContext* parentSC = aFrame->GetStyleContext(); if (!parentSC) { break; } nsIContent* textContent = textFrame->GetContent(); if (!textContent) { break; } nsRefPtr newSC; newSC = aPresShell->StyleSet()->ResolveStyleForNonElement(parentSC); if (!newSC) { break; } NS_NewTextFrame(aPresShell, &textFrame); textFrame->Init(aPresContext, textContent, aFrame, newSC, nsnull); // Next rip out the kid and replace it with the text frame ::DeletingFrameSubtree(aPresContext, aFrameManager, kid); aFrameManager->RemoveFrame(aFrame, nsnull, kid); // Insert text frame in its place aFrameManager->InsertFrames(aFrame, nsnull, prevSibling, textFrame); *aStopLooking = PR_TRUE; break; } else if ((nsLayoutAtoms::inlineFrame == frameType) || (nsLayoutAtoms::lineFrame == frameType) || (nsLayoutAtoms::positionedInlineFrame == frameType)) { // Look inside child inline frame for the letter frame RemoveFirstLetterFrames(aPresContext, aPresShell, aFrameManager, kid, aStopLooking); if (*aStopLooking) { break; } } prevSibling = kid; kid = kid->GetNextSibling(); } return NS_OK; } nsresult nsCSSFrameConstructor::RemoveLetterFrames(nsPresContext* aPresContext, nsIPresShell* aPresShell, nsFrameManager* aFrameManager, nsIFrame* aBlockFrame) { PRBool stopLooking = PR_FALSE; nsresult rv = RemoveFloatingFirstLetterFrames(aPresContext, aPresShell, aFrameManager, aBlockFrame, &stopLooking); if (NS_SUCCEEDED(rv) && !stopLooking) { rv = RemoveFirstLetterFrames(aPresContext, aPresShell, aFrameManager, aBlockFrame, &stopLooking); } return rv; } // Fixup the letter frame situation for the given block nsresult nsCSSFrameConstructor::RecoverLetterFrames(nsFrameConstructorState& aState, nsIFrame* aBlockFrame) { nsresult rv = NS_OK; aBlockFrame->AddStateBits(NS_BLOCK_HAS_FIRST_LETTER_STYLE); nsIFrame* blockKids = aBlockFrame->GetFirstChild(nsnull); nsIFrame* parentFrame = nsnull; nsIFrame* textFrame = nsnull; nsIFrame* prevFrame = nsnull; nsFrameItems letterFrames; PRBool stopLooking = PR_FALSE; rv = WrapFramesInFirstLetterFrame(aState, aBlockFrame, blockKids, &parentFrame, &textFrame, &prevFrame, letterFrames, &stopLooking); if (NS_FAILED(rv)) { return rv; } if (parentFrame) { // Take the old textFrame out of the parents child list ::DeletingFrameSubtree(aState.mPresContext, aState.mFrameManager, textFrame); parentFrame->RemoveFrame(nsnull, textFrame); // Insert in the letter frame(s) parentFrame->InsertFrames(nsnull, prevFrame, letterFrames.childList); } return rv; } //---------------------------------------------------------------------- // listbox Widget Routines nsresult nsCSSFrameConstructor::CreateListBoxContent(nsPresContext* aPresContext, nsIFrame* aParentFrame, nsIFrame* aPrevFrame, nsIContent* aChild, nsIFrame** aNewFrame, PRBool aIsAppend, PRBool aIsScrollbar, nsILayoutHistoryState* aFrameState) { #ifdef MOZ_XUL nsresult rv = NS_OK; // Construct a new frame if (nsnull != aParentFrame) { nsFrameItems frameItems; nsFrameConstructorState state(mPresShell, mFixedContainingBlock, GetAbsoluteContainingBlock(aParentFrame), GetFloatContainingBlock(aParentFrame), mTempFrameTreeState); nsRefPtr styleContext; styleContext = ResolveStyleContext(aParentFrame, aChild); // Pre-check for display "none" - only if we find that, do we create // any frame at all const nsStyleDisplay* display = styleContext->GetStyleDisplay(); if (NS_STYLE_DISPLAY_NONE == display->mDisplay) { *aNewFrame = nsnull; return NS_OK; } rv = ConstructFrameInternal(state, aChild, aParentFrame, aChild->Tag(), aChild->GetNameSpaceID(), styleContext, frameItems, PR_FALSE); if (!state.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(state, frameItems); } nsIFrame* newFrame = frameItems.childList; *aNewFrame = newFrame; if (NS_SUCCEEDED(rv) && (nsnull != newFrame)) { // Notify the parent frame if (aIsAppend) rv = ((nsListBoxBodyFrame*)aParentFrame)->ListBoxAppendFrames(newFrame); else rv = ((nsListBoxBodyFrame*)aParentFrame)->ListBoxInsertFrames(aPrevFrame, newFrame); } } return rv; #else return NS_ERROR_FAILURE; #endif } //---------------------------------------- nsresult nsCSSFrameConstructor::ConstructBlock(nsFrameConstructorState& aState, const nsStyleDisplay* aDisplay, nsIContent* aContent, nsIFrame* aParentFrame, nsIFrame* aContentParentFrame, nsStyleContext* aStyleContext, nsIFrame** aNewFrame, nsFrameItems& aFrameItems, PRBool aAbsPosContainer) { // Create column wrapper if necessary nsIFrame* blockFrame = *aNewFrame; nsIFrame* parent = aParentFrame; nsIFrame* contentParent = aContentParentFrame; nsRefPtr blockStyle = aStyleContext; const nsStyleColumn* columns = aStyleContext->GetStyleColumn(); if (columns->mColumnCount != NS_STYLE_COLUMN_COUNT_AUTO || columns->mColumnWidth.GetUnit() != eStyleUnit_Auto) { nsIFrame* columnSetFrame = nsnull; NS_NewColumnSetFrame(mPresShell, &columnSetFrame, 0); if (!columnSetFrame) { return NS_ERROR_OUT_OF_MEMORY; } InitAndRestoreFrame(aState, aContent, aParentFrame, aStyleContext, nsnull, columnSetFrame); // See if we need to create a view, e.g. the frame is absolutely positioned nsHTMLContainerFrame::CreateViewForFrame(columnSetFrame, aContentParentFrame, PR_FALSE); blockStyle = mPresShell->StyleSet()-> ResolvePseudoStyleFor(aContent, nsCSSAnonBoxes::columnContent, aStyleContext); contentParent = columnSetFrame; parent = columnSetFrame; *aNewFrame = columnSetFrame; columnSetFrame->SetInitialChildList(aState.mPresContext, nsnull, blockFrame); blockFrame->AddStateBits(NS_BLOCK_SPACE_MGR); } InitAndRestoreFrame(aState, aContent, parent, blockStyle, nsnull, blockFrame); nsresult rv = aState.AddChild(*aNewFrame, aFrameItems, aDisplay, aContent, aStyleContext, aContentParentFrame ? aContentParentFrame : aParentFrame); if (NS_FAILED(rv)) { return rv; } // See if we need to create a view, e.g. the frame is absolutely positioned nsHTMLContainerFrame::CreateViewForFrame(blockFrame, contentParent, PR_FALSE); // If we're the first block to be created (e.g., because we're // contained inside a XUL document), then make sure that we've got a // space manager so we can handle floats... if (! aState.mFloatedItems.containingBlock) { blockFrame->AddStateBits(NS_BLOCK_SPACE_MGR | NS_BLOCK_MARGIN_ROOT); } // We should make the outer frame be the absolute containing block, // if one is required. We have to do this because absolute // positioning must be computed with respect to the CSS dimensions // of the element, which are the dimensions of the outer block. But // we can't really do that because only blocks can have absolute // children. So use the block and try to compensate with hacks // in nsBlockFrame::CalculateContainingBlockSizeForAbsolutes. nsFrameConstructorSaveState absoluteSaveState; if (aAbsPosContainer) { // NS_ASSERTION(aRelPos, "should have made area frame for this"); aState.PushAbsoluteContainingBlock(blockFrame, absoluteSaveState); } // See if the block has first-letter style applied to it... PRBool haveFirstLetterStyle, haveFirstLineStyle; HaveSpecialBlockStyle(aContent, aStyleContext, &haveFirstLetterStyle, &haveFirstLineStyle); // Process the child content nsFrameItems childItems; nsFrameConstructorSaveState floatSaveState; aState.PushFloatContainingBlock(blockFrame, floatSaveState, haveFirstLetterStyle, haveFirstLineStyle); rv = ProcessChildren(aState, aContent, blockFrame, PR_TRUE, childItems, PR_TRUE); CreateAnonymousFrames(aContent->Tag(), aState, aContent, blockFrame, PR_FALSE, childItems); // Set the frame's initial child list blockFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); return rv; } PRBool nsCSSFrameConstructor::AreAllKidsInline(nsIFrame* aFrameList) { nsIFrame* kid = aFrameList; while (kid) { if (!IsInlineFrame(kid)) { return PR_FALSE; } kid = kid->GetNextSibling(); } return PR_TRUE; } nsresult nsCSSFrameConstructor::ConstructInline(nsFrameConstructorState& aState, const nsStyleDisplay* aDisplay, nsIContent* aContent, nsIFrame* aParentFrame, nsStyleContext* aStyleContext, PRBool aIsPositioned, nsIFrame* aNewFrame) { // Initialize the frame InitAndRestoreFrame(aState, aContent, aParentFrame, aStyleContext, nsnull, aNewFrame); nsFrameConstructorSaveState absoluteSaveState; // definition cannot be inside next block // because the object's destructor is significant // this is part of the fix for bug 42372 // Any inline frame might need a view (because of opacity, or fixed background) // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(aNewFrame, nsnull, PR_FALSE); if (aIsPositioned) { // Relatively positioned frames becomes a container for child // frames that are positioned aState.PushAbsoluteContainingBlock(aNewFrame, absoluteSaveState); } // Process the child content nsFrameItems childItems; PRBool kidsAllInline; nsresult rv = ProcessInlineChildren(aState, aContent, aNewFrame, PR_TRUE, childItems, &kidsAllInline); if (kidsAllInline) { // Set the inline frame's initial child list CreateAnonymousFrames(aContent->Tag(), aState, aContent, aNewFrame, PR_FALSE, childItems); aNewFrame->SetInitialChildList(aState.mPresContext, nsnull, childItems.childList); return rv; } // This inline frame contains several types of children. Therefore // this frame has to be chopped into several pieces. We will produce // as a result of this 3 lists of children. The first list contains // all of the inline children that preceed the first block child // (and may be empty). The second list contains all of the block // children and any inlines that are between them (and must not be // empty, otherwise - why are we here?). The final list contains all // of the inline children that follow the final block child. // Find the first block child which defines list1 and list2 nsIFrame* list1 = childItems.childList; nsIFrame* prevToFirstBlock; nsIFrame* list2 = FindFirstBlock(list1, &prevToFirstBlock); if (prevToFirstBlock) { prevToFirstBlock->SetNextSibling(nsnull); } else { list1 = nsnull; } // Find the last block child which defines the end of list2 and the // start of list3 nsIFrame* afterFirstBlock = list2->GetNextSibling(); nsIFrame* list3 = nsnull; nsIFrame* lastBlock = FindLastBlock(afterFirstBlock); if (!lastBlock) { lastBlock = list2; } list3 = lastBlock->GetNextSibling(); lastBlock->SetNextSibling(nsnull); // list1's frames belong to this inline frame so go ahead and take them aNewFrame->SetInitialChildList(aState.mPresContext, nsnull, list1); // list2's frames belong to an anonymous block that we create right // now. The anonymous block will be the parent of the block children // of the inline. nsIFrame* blockFrame; nsIAtom* blockStyle; if (aIsPositioned) { NS_NewRelativeItemWrapperFrame(mPresShell, &blockFrame); blockStyle = nsCSSAnonBoxes::mozAnonymousPositionedBlock; } else { NS_NewBlockFrame(mPresShell, &blockFrame); blockStyle = nsCSSAnonBoxes::mozAnonymousBlock; } nsRefPtr blockSC; blockSC = mPresShell->StyleSet()->ResolvePseudoStyleFor(aContent, blockStyle, aStyleContext); if (! aState.mFloatedItems.containingBlock) { blockFrame->AddStateBits(NS_BLOCK_SPACE_MGR | NS_BLOCK_MARGIN_ROOT); } InitAndRestoreFrame(aState, aContent, aParentFrame, blockSC, nsnull, blockFrame, PR_FALSE); // Any inline frame could have a view (e.g., opacity) // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(blockFrame, nsnull, PR_FALSE); if (blockFrame->HasView() || aNewFrame->HasView()) { // Move list2's frames into the new view nsHTMLContainerFrame::ReparentFrameViewList(aState.mPresContext, list2, list2->GetParent(), blockFrame); } blockFrame->SetInitialChildList(aState.mPresContext, nsnull, list2); nsFrameConstructorState state(mPresShell, mFixedContainingBlock, GetAbsoluteContainingBlock(blockFrame), GetFloatContainingBlock(blockFrame)); // If we have an inline between two blocks all inside an inline and the inner // inline contains a float, the float will end up in the float list of the // parent block of the inline, but its parent pointer will be the anonymous // block we create... AdjustFloatParentPtrs() deals with this by moving the // float from the outer state |aState| to the inner |state|. MoveChildrenTo(state.mFrameManager, blockSC, blockFrame, list2, &state, &aState); // list3's frames belong to another inline frame nsIFrame* inlineFrame = nsnull; if (list3) { if (aIsPositioned) { NS_NewPositionedInlineFrame(mPresShell, &inlineFrame); } else { NS_NewInlineFrame(mPresShell, &inlineFrame); } InitAndRestoreFrame(aState, aContent, aParentFrame, aStyleContext, nsnull, inlineFrame, PR_FALSE); // Any frame might need a view // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(inlineFrame, nsnull, PR_FALSE); if (inlineFrame->HasView() || aNewFrame->HasView()) { // Move list3's frames into the new view nsHTMLContainerFrame::ReparentFrameViewList(aState.mPresContext, list3, list3->GetParent(), inlineFrame); } // Reparent (cheaply) the frames in list3 - we don't have to futz // with their style context because they already have the right one. inlineFrame->SetInitialChildList(aState.mPresContext, nsnull, list3); MoveChildrenTo(aState.mFrameManager, nsnull, inlineFrame, list3, nsnull, nsnull); } // Mark the 3 frames as special. That way if any of the // append/insert/remove methods try to fiddle with the children, the // containing block will be reframed instead. SetFrameIsSpecial(aNewFrame, blockFrame); SetFrameIsSpecial(blockFrame, inlineFrame); MarkIBSpecialPrevSibling(aState.mPresContext, blockFrame, aNewFrame); if (inlineFrame) SetFrameIsSpecial(inlineFrame, nsnull); #ifdef DEBUG if (gNoisyInlineConstruction) { nsIFrameDebug* frameDebug; printf("nsCSSFrameConstructor::ConstructInline:\n"); if (NS_SUCCEEDED(CallQueryInterface(aNewFrame, &frameDebug))) { printf(" ==> leading inline frame:\n"); frameDebug->List(aState.mPresContext, stdout, 2); } if (NS_SUCCEEDED(CallQueryInterface(blockFrame, &frameDebug))) { printf(" ==> block frame:\n"); frameDebug->List(aState.mPresContext, stdout, 2); } if (inlineFrame && NS_SUCCEEDED(CallQueryInterface(inlineFrame, &frameDebug))) { printf(" ==> trailing inline frame:\n"); frameDebug->List(aState.mPresContext, stdout, 2); } } #endif return rv; } nsresult nsCSSFrameConstructor::ProcessInlineChildren(nsFrameConstructorState& aState, nsIContent* aContent, nsIFrame* aFrame, PRBool aCanHaveGeneratedContent, nsFrameItems& aFrameItems, PRBool* aKidsAllInline) { nsresult rv = NS_OK; nsStyleContext* styleContext = nsnull; // save the pseudo frame state nsPseudoFrames prevPseudoFrames; aState.mPseudoFrames.Reset(&prevPseudoFrames); if (aCanHaveGeneratedContent) { // Probe for generated content before nsIFrame* generatedFrame; styleContext = aFrame->GetStyleContext(); if (CreateGeneratedContentFrame(aState, aFrame, aContent, styleContext, nsCSSPseudoElements::before, &generatedFrame)) { // Add the generated frame to the child list aFrameItems.AddChild(generatedFrame); } } // Iterate the child content objects and construct frames PRBool allKidsInline = PR_TRUE; ChildIterator iter, last; for (ChildIterator::Init(aContent, &iter, &last); iter != last; ++iter) { // Construct a child frame nsIFrame* oldLastChild = aFrameItems.lastChild; rv = ConstructFrame(aState, nsCOMPtr(*iter), aFrame, aFrameItems); if (NS_FAILED(rv)) { return rv; } // Examine newly added children (we may have added more than one // child if the child was another inline frame that ends up // being carved in 3 pieces) to maintain the allKidsInline flag. if (allKidsInline) { nsIFrame* kid; if (oldLastChild) { kid = oldLastChild->GetNextSibling(); } else { kid = aFrameItems.childList; } while (kid) { if (!IsInlineFrame(kid)) { allKidsInline = PR_FALSE; break; } kid = kid->GetNextSibling(); } } } if (aCanHaveGeneratedContent) { // Probe for generated content after nsIFrame* generatedFrame; if (CreateGeneratedContentFrame(aState, aFrame, aContent, styleContext, nsCSSPseudoElements::after, &generatedFrame)) { // Add the generated frame to the child list aFrameItems.AddChild(generatedFrame); } } // process the current pseudo frame state if (!aState.mPseudoFrames.IsEmpty()) { ProcessPseudoFrames(aState, aFrameItems); // recompute allKidsInline to take into account new child frames // XXX we DON'T do this yet because anonymous table children should // be accepted as inline children, until we turn on inline-table. // See bug 297537. // allKidsInline = AreAllKidsInline(aFrameItems.childList); } // restore the pseudo frame state aState.mPseudoFrames = prevPseudoFrames; *aKidsAllInline = allKidsInline; return rv; } PRBool nsCSSFrameConstructor::WipeContainingBlock(nsFrameConstructorState& aState, nsIFrame* aContainingBlock, nsIFrame* aFrame, nsIFrame* aFrameList) { if (!aContainingBlock) return PR_FALSE; // Before we go and append the frames, check for a special // situation: an inline frame that will now contain block // frames. This is a no-no and the frame construction logic knows // how to fix this. // If we don't have a block within an inline, just return false. // XXX We should be more careful about |aFrame| being something // constructed by tag name (see the SELECT check all callers currenly // do). if (NS_STYLE_DISPLAY_INLINE != aFrame->GetStyleDisplay()->mDisplay || AreAllKidsInline(aFrameList)) return PR_FALSE; // Ok, reverse tracks: wipe out the frames we just created nsFrameManager *frameManager = aState.mFrameManager; nsPresContext *presContext = aState.mPresContext; // Destroy the frames. As we do make sure any content to frame mappings // or entries in the undisplayed content map are removed frameManager->ClearAllUndisplayedContentIn(aFrame->GetContent()); CleanupFrameReferences(presContext, frameManager, aFrameList); if (aState.mAbsoluteItems.childList) { CleanupFrameReferences(presContext, frameManager, aState.mAbsoluteItems.childList); } if (aState.mFixedItems.childList) { CleanupFrameReferences(presContext, frameManager, aState.mFixedItems.childList); } if (aState.mFloatedItems.childList) { CleanupFrameReferences(presContext, frameManager, aState.mFloatedItems.childList); } nsFrameList tmp(aFrameList); tmp.DestroyFrames(presContext); tmp.SetFrames(aState.mAbsoluteItems.childList); tmp.DestroyFrames(presContext); aState.mAbsoluteItems.childList = nsnull; tmp.SetFrames(aState.mFixedItems.childList); tmp.DestroyFrames(presContext); aState.mFixedItems.childList = nsnull; tmp.SetFrames(aState.mFloatedItems.childList); tmp.DestroyFrames(presContext); aState.mFloatedItems.childList = nsnull; // If we don't have a containing block, try to find our closest non-inline // ancestor. We're guaranteed to have one, since // nsStyleContext::ApplyStyleFixups enforces that the root is display:none, // display:table, or display:block. if (!aContainingBlock) { aContainingBlock = aFrame; do { aContainingBlock = aContainingBlock->GetParent(); NS_ASSERTION(aContainingBlock, "Must have non-inline frame as root!"); } while (IsInlineFrame(aContainingBlock)); } // Tell parent of the containing block to reformulate the // entire block. This is painful and definitely not optimal // but it will *always* get the right answer. // First, if the containing block is really a block wrapper for something // that's really an inline, walk up the parent chain until we hit something // that's not. while (IsFrameSpecial(aContainingBlock)) aContainingBlock = aContainingBlock->GetParent(); nsIContent *blockContent = aContainingBlock->GetContent(); nsCOMPtr parentContainer = blockContent->GetParent(); #ifdef DEBUG if (gNoisyContentUpdates) { printf("nsCSSFrameConstructor::WipeContainingBlock: blockContent=%p parentContainer=%p\n", NS_STATIC_CAST(void*, blockContent), NS_STATIC_CAST(void*, parentContainer)); } #endif if (parentContainer) { ReinsertContent(parentContainer, blockContent); } else if (blockContent->GetCurrentDoc() == mDocument) { ReconstructDocElementHierarchy(); } return PR_TRUE; } /* * Recursively split an inline frame until we reach a block frame. * Below is an example of how SplitToContainingBlock() works. * * 1. In the initial state, you've got a block frame |B| that contains * a bunch of inline frames eventually winding down to the * frame |o|. (Block frames are indicated with upper case letters, * inline frames are indicated with lower case.) * * A-->B-->C * | * i-->j-->k * | * l-->m-->n * | * o * * 2. Now the object frame |o| gets split into the left inlines |o|, * the block frames |O|, and the right inlines |o'|. * * o O o' * * 3. We call SplitToContainingBlock(), which will split |m| as follows. * * .--------. * / \ * l-->m==>M==>m' n * | | | * o O o' * * Note that |m| gets split into |M| and |m'|, which correspond to * the anonymous block and inline frames, * respectively. Furthermore, note that |m| still refers to |n| as * its next sibling, and that |m'| does not yet have a next sibling. * * The double-arrow line indicates that an annotation is made in * the frame manager that indicates |M| is the ``special sibling'' * of |m|, and that |m'| is the ``special sibling'' of |M|. * * 4. We recurse again to split |j|. At this point, we'll break the * link between |m| and |n|, and make |n| be the next sibling of * |m'|. * * .-----------. * / \ * i-->j=====>J==>j' k * | | | * l-->m=>M==>m'-->n * | | | * o O o' * * As before, |j| retains |k| as its next sibling, and |j'| is not * yet assigned its next sibling. * * 5. When we hit B, the recursion terminates. We now insert |J| and * |j'| immediately after |j|, resulting in the following frame * model. This is done using the "normal" frame insertion * mechanism, nsIFrame::InsertFrames(), which properly recomputes * the line boxes. * * A-->B-->C * | * i-->j-=-=-=>J-=->j'-->k * | | | * l-->m==>M===>m'-->n * | | | * o O o' * * Since B is a block, it is allowed to contain both block and * inline frames, so we can let |J| and |j'| be "real siblings" of * |j|. * * Note that |J| is both the ``normal'' sibling and ``special'' * sibling of |j|, and |j'| is both the ``normal'' and ``special'' * sibling of |J|. */ nsresult nsCSSFrameConstructor::SplitToContainingBlock(nsFrameConstructorState& aState, nsIFrame* aFrame, nsIFrame* aLeftInlineChildFrame, nsIFrame* aBlockChildFrame, nsIFrame* aRightInlineChildFrame, PRBool aTransfer) { // If aFrame is an inline frame, then recursively "split" it until // we reach a block frame. aLeftInlineChildFrame is the original // inline child of aFrame (or null, if there were no frames to the // left of the new block); aBlockChildFrame and // aRightInlineChildFrame are the newly created frames that were // constructed as a result of the previous recursion's // "split". aRightInlineChildFrame may be null if there are no // inlines to the right of the new block. // // aBlockChildFrame and aRightInlineChildFrame will be "orphaned" frames upon // entry to this routine; that is, they won't be parented. We'll // assign them proper parents. NS_PRECONDITION(aFrame != nsnull, "no frame to split"); if (! aFrame) return NS_ERROR_NULL_POINTER; NS_PRECONDITION(aBlockChildFrame != nsnull, "no block child"); if (! aBlockChildFrame) return NS_ERROR_NULL_POINTER; // Check whether the frame is an inline. Here "an inline" is an // actual inline frame (positioned or not) or a lineframe // (corresponding to :first-line), since the latter should stop at // the first block it runs into and we might be inserting one in the // middle of it. nsIAtom* frameType = aFrame->GetType(); if (frameType != nsLayoutAtoms::inlineFrame && frameType != nsLayoutAtoms::positionedInlineFrame && frameType != nsLayoutAtoms::lineFrame) { // If aFrame is a block-like frame, then we're done: make // aBlockChildFrame and aRightInlineChildFrame children of aFrame, // and insert aBlockChildFrame and aRightInlineChildFrame after // aLeftInlineChildFrame aBlockChildFrame->SetParent(aFrame); if (aRightInlineChildFrame) aRightInlineChildFrame->SetParent(aFrame); aBlockChildFrame->SetNextSibling(aRightInlineChildFrame); if (aLeftInlineChildFrame) { aFrame->InsertFrames(nsnull, aLeftInlineChildFrame, aBlockChildFrame); } // If aLeftInlineChild has a view... if (aLeftInlineChildFrame && aLeftInlineChildFrame->HasView()) { // ...create a new view for the block child, and reparent views // XXXbz should we be passing in a non-null aContentParentFrame? // force creation of a view; it'll probably need one anyway since it // has the same style context, and it's easier to think about if we can // be sure the left inlines, the block and the right inlines all have a view nsHTMLContainerFrame::CreateViewForFrame(aBlockChildFrame, nsnull, PR_TRUE); nsIFrame* frame = aBlockChildFrame->GetFirstChild(nsnull); nsHTMLContainerFrame::ReparentFrameViewList(aState.mPresContext, frame, aLeftInlineChildFrame, aBlockChildFrame); if (aRightInlineChildFrame) { // Same for the right inline children // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(aRightInlineChildFrame, nsnull, PR_TRUE); frame = aRightInlineChildFrame->GetFirstChild(nsnull); nsHTMLContainerFrame::ReparentFrameViewList(aState.mPresContext, frame, aLeftInlineChildFrame, aRightInlineChildFrame); } } return NS_OK; } // Otherwise, aFrame is inline. Split it, and recurse to find the // containing block frame. nsIContent* content = aFrame->GetContent(); PRBool isPositioned = (frameType == nsLayoutAtoms::positionedInlineFrame); // Create an "anonymous block" frame that will parent // aBlockChildFrame. The new frame won't have a parent yet: the recursion // will parent it. nsIFrame* blockFrame; nsIAtom* blockStyle; if (isPositioned) { NS_NewRelativeItemWrapperFrame(mPresShell, &blockFrame); blockStyle = nsCSSAnonBoxes::mozAnonymousPositionedBlock; } else { NS_NewBlockFrame(mPresShell, &blockFrame); blockStyle = nsCSSAnonBoxes::mozAnonymousBlock; } if (! blockFrame) return NS_ERROR_OUT_OF_MEMORY; nsStyleContext* styleContext = aFrame->GetStyleContext(); nsRefPtr blockSC; blockSC = mPresShell->StyleSet()-> ResolvePseudoStyleFor(content, blockStyle, styleContext); InitAndRestoreFrame(aState, content, aFrame->GetParent(), blockSC, nsnull, blockFrame, PR_FALSE); // Any inline frame could have a view (e.g., opacity) // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(blockFrame, nsnull, PR_FALSE); if (blockFrame->HasView() || aFrame->HasView()) { // Move aBlockChildFrame's frames into the new view nsHTMLContainerFrame::ReparentFrameViewList(aState.mPresContext, aBlockChildFrame, aBlockChildFrame->GetParent(), blockFrame); } blockFrame->SetInitialChildList(aState.mPresContext, nsnull, aBlockChildFrame); // XXXbz do we need to pass in states here? Hard to tell... :( MoveChildrenTo(aState.mFrameManager, blockSC, blockFrame, aBlockChildFrame, nsnull, nsnull); nsIFrame* inlineFrame = nsnull; // Create an anonymous inline frame that will parent // aRightInlineChildFrame. The new frame won't have a parent yet: // the recursion will parent it. // XXXldb Why bother if |aRightInlineChildFrame| is null? // XXXbz the aTransfer == PR_TRUE code seems to depend on it. :( if (isPositioned) { NS_NewPositionedInlineFrame(mPresShell, &inlineFrame); } else { NS_NewInlineFrame(mPresShell, &inlineFrame); } if (! inlineFrame) return NS_ERROR_OUT_OF_MEMORY; InitAndRestoreFrame(aState, content, aFrame->GetParent(), styleContext, nsnull, inlineFrame, PR_FALSE); // Any frame might need a view // XXXbz should we be passing in a non-null aContentParentFrame? nsHTMLContainerFrame::CreateViewForFrame(inlineFrame, nsnull, PR_FALSE); if (aRightInlineChildFrame && (inlineFrame->HasView() || aFrame->HasView())) { // Move aRightInlineChildFrame's frames into the new view nsHTMLContainerFrame::ReparentFrameViewList(aState.mPresContext, aRightInlineChildFrame, aRightInlineChildFrame->GetParent(), inlineFrame); } inlineFrame->SetInitialChildList(aState.mPresContext, nsnull, aRightInlineChildFrame); // XXXbz again, what about states? MoveChildrenTo(aState.mFrameManager, nsnull, inlineFrame, aRightInlineChildFrame, nsnull, nsnull); // Make the "special" inline-block linkage between aFrame and the // newly created anonymous frames. We need to create the linkage // between the first in flow, so if we're a continuation frame, walk // back to find it. nsIFrame* firstInFlow = aFrame->GetFirstInFlow(); SetFrameIsSpecial(firstInFlow, blockFrame); SetFrameIsSpecial(blockFrame, inlineFrame); SetFrameIsSpecial(inlineFrame, nsnull); MarkIBSpecialPrevSibling(aState.mPresContext, blockFrame, firstInFlow); // If we have a continuation frame, then we need to blow it away. Otherwise // the flow will get all confused, with dangling in-flows around, and things // pointing to the wrong things as in-flows. So just nuke the flow and we'll // recover it when we reflow. nsIFrame* nextInFlow = aFrame->GetNextInFlow(); if (nextInFlow) { aFrame->SetNextInFlow(nsnull); nextInFlow->SetPrevInFlow(nsnull); nsIFrame* parent = nextInFlow->GetParent(); nsCOMPtr listName; GetChildListNameFor(parent, nextInFlow, getter_AddRefs(listName)); parent->RemoveFrame(listName, nextInFlow); } // This is where the mothership lands and we start to get a bit // funky. We're going to do a bit of work to ensure that the frames // from the *last* recursion are properly hooked up. // // aTransfer will be set once the recursion begins to nest. (It's // not set at the first level of recursion, because // aLeftInlineChildFrame, aBlockChildFrame, and // aRightInlineChildFrame already have their sibling and parent // pointers properly initialized.) // // Once we begin to nest recursion, aLeftInlineChildFrame // corresponds to the original inline that we're trying to split, // and aBlockChildFrame and aRightInlineChildFrame are the anonymous // frames we created to protect the inline-block invariant. if (aTransfer) { // We'd better have the left- and right-inline children! NS_ASSERTION(aLeftInlineChildFrame != nsnull, "no left inline child frame"); NS_ASSERTION(aRightInlineChildFrame != nsnull, "no right inline child frame"); // We need to move any successors of the original inline // (aLeftInlineChildFrame) to aRightInlineChildFrame. nsIFrame* nextInlineFrame = aLeftInlineChildFrame->GetNextSibling(); aLeftInlineChildFrame->SetNextSibling(nsnull); aRightInlineChildFrame->SetNextSibling(nextInlineFrame); // Any frame that was moved will need its parent pointer fixed, // and will need to be marked as dirty. while (nextInlineFrame) { nextInlineFrame->SetParent(inlineFrame); nextInlineFrame->AddStateBits(NS_FRAME_IS_DIRTY); nextInlineFrame = nextInlineFrame->GetNextSibling(); } } // Recurse to the parent frame. This will assign a parent frame to // each new frame we've just created. nsIFrame* parent = aFrame->GetParent(); NS_ASSERTION(parent != nsnull, "frame has no geometric parent"); if (! parent) return NS_ERROR_FAILURE; // When we recur, we'll make the "left inline child frame" be the // inline frame we've just begun to "split", and we'll pass the // newly created anonymous frames as aBlockChildFrame and // aRightInlineChildFrame. return SplitToContainingBlock(aState, parent, aFrame, blockFrame, inlineFrame, PR_TRUE); } nsresult nsCSSFrameConstructor::ReframeContainingBlock(nsIFrame* aFrame) { #ifdef DEBUG // ReframeContainingBlock is a NASTY routine, it causes terrible performance problems // so I want to see when it is happening! Unfortunately, it is happening way to often because // so much content on the web causes 'special' block-in-inline frame situations and we handle them // very poorly if (gNoisyContentUpdates) { printf("nsCSSFrameConstructor::ReframeContainingBlock frame=%p\n", NS_STATIC_CAST(void*, aFrame)); } #endif PRBool isReflowing; mPresShell->IsReflowLocked(&isReflowing); if(isReflowing) { // don't ReframeContainingBlock, this will result in a crash // if we remove a tree that's in reflow - see bug 121368 for testcase NS_ASSERTION(0, "Atemptted to nsCSSFrameConstructor::ReframeContainingBlock during a Reflow!!!"); return NS_OK; } // Get the first "normal" ancestor of the target frame. nsIFrame* containingBlock = GetIBContainingBlockFor(aFrame); if (containingBlock) { // From here we look for the containing block in case the target // frame is already a block (which can happen when an inline frame // wraps some of its content in an anonymous block; see // ConstructInline) // NOTE: We used to get the FloatContainingBlock here, but it was often wrong. // GetIBContainingBlock works much better and provides the correct container in all cases // so GetFloatContainingBlock(aFrame) has been removed // And get the containingBlock's content nsCOMPtr blockContent = containingBlock->GetContent(); if (blockContent) { // Now find the containingBlock's content's parent nsCOMPtr parentContainer = blockContent->GetParent(); if (parentContainer) { #ifdef DEBUG if (gNoisyContentUpdates) { printf(" ==> blockContent=%p, parentContainer=%p\n", NS_STATIC_CAST(void*, blockContent), NS_STATIC_CAST(void*, parentContainer)); } #endif return ReinsertContent(parentContainer, blockContent); } } } // If we get here, we're screwed! return ReconstructDocElementHierarchy(); } nsresult nsCSSFrameConstructor::RemoveFixedItems(const nsFrameConstructorState& aState) { nsresult rv=NS_OK; if (mFixedContainingBlock) { nsIFrame *fixedChild = nsnull; do { fixedChild = mFixedContainingBlock->GetFirstChild(nsLayoutAtoms::fixedList); if (fixedChild) { // Remove the placeholder so it doesn't end up sitting about pointing // to the removed fixed frame. nsIFrame *placeholderFrame; mPresShell->GetPlaceholderFrameFor(fixedChild, &placeholderFrame); NS_ASSERTION(placeholderFrame, "no placeholder for fixed-pos frame"); nsIFrame* placeholderParent = placeholderFrame->GetParent(); ::DeletingFrameSubtree(aState.mPresContext, aState.mFrameManager, placeholderFrame); rv = aState.mFrameManager->RemoveFrame(placeholderParent, nsnull, placeholderFrame); if (NS_FAILED(rv)) { NS_WARNING("Error removing placeholder for fixed frame in RemoveFixedItems"); break; } ::DeletingFrameSubtree(aState.mPresContext, aState.mFrameManager, fixedChild); rv = aState.mFrameManager->RemoveFrame(mFixedContainingBlock, nsLayoutAtoms::fixedList, fixedChild); if (NS_FAILED(rv)) { NS_WARNING("Error removing frame from fixed containing block in RemoveFixedItems"); break; } } } while(fixedChild); } else { NS_WARNING( "RemoveFixedItems called with no FixedContainingBlock data member set"); } return rv; } PR_STATIC_CALLBACK(PLDHashOperator) CollectRestyles(nsISupports* aContent, nsCSSFrameConstructor::RestyleData& aData, void* aRestyleArrayPtr) { nsCSSFrameConstructor::RestyleEnumerateData** restyleArrayPtr = NS_STATIC_CAST(nsCSSFrameConstructor::RestyleEnumerateData**, aRestyleArrayPtr); nsCSSFrameConstructor::RestyleEnumerateData* currentRestyle = *restyleArrayPtr; currentRestyle->mContent = NS_STATIC_CAST(nsIContent*, aContent); currentRestyle->mRestyleHint = aData.mRestyleHint; currentRestyle->mChangeHint = aData.mChangeHint; // Increment to the next slot in the array *restyleArrayPtr = currentRestyle + 1; return PL_DHASH_NEXT; } void nsCSSFrameConstructor::ProcessOneRestyle(nsIContent* aContent, nsReStyleHint aRestyleHint, nsChangeHint aChangeHint) { NS_PRECONDITION(aContent, "Must have content node"); if (!aContent->IsInDoc() || aContent->GetCurrentDoc() != mDocument) { // Content node has been removed from our document; nothing else // to do here return; } nsIFrame* primaryFrame = nsnull; mPresShell->GetPrimaryFrameFor(aContent, &primaryFrame); if (aRestyleHint & eReStyle_Self) { RestyleElement(aContent, primaryFrame, aChangeHint); } else if (aChangeHint && (primaryFrame || (aChangeHint & nsChangeHint_ReconstructFrame))) { // Don't need to recompute style; just apply the hint nsStyleChangeList changeList; changeList.AppendChange(primaryFrame, aContent, aChangeHint); ProcessRestyledFrames(changeList); } if (aRestyleHint & eReStyle_LaterSiblings) { RestyleLaterSiblings(aContent); } } void nsCSSFrameConstructor::ProcessPendingRestyles() { NS_PRECONDITION(mDocument, "No document? Pshaw!\n"); nsCSSFrameConstructor::RestyleEnumerateData* restylesToProcess = new nsCSSFrameConstructor::RestyleEnumerateData[mPendingRestyles.Count()]; if (!restylesToProcess) { return; } nsCSSFrameConstructor::RestyleEnumerateData* lastRestyle = restylesToProcess; mPendingRestyles.Enumerate(CollectRestyles, &lastRestyle); NS_ASSERTION(lastRestyle - restylesToProcess == PRInt32(mPendingRestyles.Count()), "Enumeration screwed up somehow"); // Clear the hashtable so we don't end up trying to process a restyle we're // already processing, sending us into an infinite loop. mPendingRestyles.Clear(); nsIViewManager* viewManager = mPresShell->GetViewManager(); // Put a view update batch around the whole thing so we only process // view updates at the very end. Note that this serves as the view // update batch we need around our ProcessRestyledFrames calls too. viewManager->BeginUpdateViewBatch(); // Make sure to not rebuild quote or counter lists while we're // processing restyles BeginUpdate(); for (nsCSSFrameConstructor::RestyleEnumerateData* currentRestyle = restylesToProcess; currentRestyle != lastRestyle; ++currentRestyle) { ProcessOneRestyle(currentRestyle->mContent, currentRestyle->mRestyleHint, currentRestyle->mChangeHint); } delete [] restylesToProcess; EndUpdate(); viewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC); } void nsCSSFrameConstructor::PostRestyleEvent(nsIContent* aContent, nsReStyleHint aRestyleHint, nsChangeHint aMinChangeHint) { if (NS_UNLIKELY(mIsDestroyingFrameTree)) return; if (aRestyleHint == 0 && !aMinChangeHint) { // Nothing to do here return; } NS_ASSERTION(aContent->IsContentOfType(nsIContent::eELEMENT), "Shouldn't be trying to restyle non-elements directly"); RestyleData existingData; existingData.mRestyleHint = nsReStyleHint(0); existingData.mChangeHint = NS_STYLE_HINT_NONE; mPendingRestyles.Get(aContent, &existingData); existingData.mRestyleHint = nsReStyleHint(existingData.mRestyleHint | aRestyleHint); NS_UpdateHint(existingData.mChangeHint, aMinChangeHint); mPendingRestyles.Put(aContent, existingData); nsCOMPtr eventQueue; mEventQueueService->GetSpecialEventQueue(nsIEventQueueService::UI_THREAD_EVENT_QUEUE, getter_AddRefs(eventQueue)); if (eventQueue != mRestyleEventQueue) { RestyleEvent* ev = new RestyleEvent(this); if (NS_FAILED(eventQueue->PostEvent(ev))) { PL_DestroyEvent(ev); // XXXbz and what? } else { mRestyleEventQueue = eventQueue; } } } void nsCSSFrameConstructor::RestyleEvent::HandleEvent() { nsCSSFrameConstructor* constructor = NS_STATIC_CAST(nsCSSFrameConstructor*, owner); nsCOMPtr viewManager = constructor->mDocument->GetShellAt(0)->GetPresContext()->GetViewManager(); NS_ASSERTION(viewManager, "Must have view manager for update"); viewManager->BeginUpdateViewBatch(); // Force flushing of any pending content notifications that might have queued // up while our event was pending. That will ensure that we don't construct // frames for content right now that's still waiting to be notified on, constructor->mPresShell->GetDocument()-> FlushPendingNotifications(Flush_ContentAndNotify); // Make sure that any restyles that happen from now on will go into // a new event. constructor->mRestyleEventQueue = nsnull; constructor->ProcessPendingRestyles(); constructor->mDocument->BindingManager()->ProcessAttachedQueue(); viewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC); } PR_STATIC_CALLBACK(void*) HandleRestyleEvent(PLEvent* aEvent) { nsCSSFrameConstructor::RestyleEvent* evt = NS_STATIC_CAST(nsCSSFrameConstructor::RestyleEvent*, aEvent); evt->HandleEvent(); return nsnull; } PR_STATIC_CALLBACK(void) DestroyRestyleEvent(PLEvent* aEvent) { delete NS_STATIC_CAST(nsCSSFrameConstructor::RestyleEvent*, aEvent); } nsCSSFrameConstructor::RestyleEvent::RestyleEvent(nsCSSFrameConstructor* aConstructor) { NS_PRECONDITION(aConstructor, "Must have a constructor!"); PL_InitEvent(this, aConstructor, ::HandleRestyleEvent, ::DestroyRestyleEvent); } nsresult nsCSSFrameConstructor::CreateInsertionPointChildren(nsFrameConstructorState &aState, nsIFrame *aNewFrame, PRBool aUseInsertionFrame) { nsIContent *creatorContent = aState.mAnonymousCreator->GetContent(); nsFrameItems insertionItems; nsIFrame *insertionFrame = aUseInsertionFrame ? aNewFrame->GetContentInsertionFrame() : aNewFrame; nsresult rv = ProcessChildren(aState, creatorContent, insertionFrame, PR_TRUE, insertionItems, aState.mCreatorIsBlock); if (NS_SUCCEEDED(rv) && insertionItems.childList) { rv = AppendFrames(aState, creatorContent, insertionFrame, insertionItems.childList, nsnull); } return rv; }