/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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): * * 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 "nsTableColGroupFrame.h" #include "nsTableColFrame.h" #include "nsTableFrame.h" #include "nsIDOMHTMLTableColElement.h" #include "nsReflowPath.h" #include "nsStyleContext.h" #include "nsStyleConsts.h" #include "nsPresContext.h" #include "nsHTMLParts.h" #include "nsHTMLAtoms.h" #include "nsCOMPtr.h" #include "nsCSSRendering.h" #include "nsIPresShell.h" #include "nsLayoutAtoms.h" #define COL_GROUP_TYPE_BITS 0xC0000000 // uses bits 31-32 from mState #define COL_GROUP_TYPE_OFFSET 30 nsTableColGroupType nsTableColGroupFrame::GetColType() const { return (nsTableColGroupType)((mState & COL_GROUP_TYPE_BITS) >> COL_GROUP_TYPE_OFFSET); } void nsTableColGroupFrame::SetColType(nsTableColGroupType aType) { PRUint32 type = aType - eColGroupContent; mState |= (type << COL_GROUP_TYPE_OFFSET); } void nsTableColGroupFrame::ResetColIndices(nsIFrame* aFirstColGroup, PRInt32 aFirstColIndex, nsIFrame* aStartColFrame) { nsTableColGroupFrame* colGroupFrame = (nsTableColGroupFrame*)aFirstColGroup; PRInt32 colIndex = aFirstColIndex; while (colGroupFrame) { if (nsLayoutAtoms::tableColGroupFrame == colGroupFrame->GetType()) { // reset the starting col index for the first cg only if we should reset // the whole colgroup (aStartColFrame defaults to nsnull) or if // aFirstColIndex is smaller than the existing starting col index if ((colIndex != aFirstColIndex) || (colIndex < colGroupFrame->GetStartColumnIndex()) || !aStartColFrame) { colGroupFrame->SetStartColumnIndex(colIndex); } nsIFrame* colFrame = aStartColFrame; if (!colFrame || (colIndex != aFirstColIndex)) { colFrame = colGroupFrame->GetFirstChild(nsnull); } while (colFrame) { if (nsLayoutAtoms::tableColFrame == colFrame->GetType()) { ((nsTableColFrame*)colFrame)->SetColIndex(colIndex); colIndex++; } colFrame = colFrame->GetNextSibling(); } } colGroupFrame = NS_STATIC_CAST(nsTableColGroupFrame*, colGroupFrame->GetNextSibling()); } } nsresult nsTableColGroupFrame::AddColsToTable(PRInt32 aFirstColIndex, PRBool aResetSubsequentColIndices, nsIFrame* aFirstFrame, nsIFrame* aLastFrame) { nsresult rv = NS_OK; nsTableFrame* tableFrame = nsnull; rv = nsTableFrame::GetTableFrame(this, tableFrame); if (!tableFrame || !aFirstFrame) return NS_ERROR_NULL_POINTER; // set the col indices of the col frames and and add col info to the table PRInt32 colIndex = aFirstColIndex; nsIFrame* kidFrame = aFirstFrame; PRBool foundLastFrame = PR_FALSE; while (kidFrame) { if (nsLayoutAtoms::tableColFrame == kidFrame->GetType()) { ((nsTableColFrame*)kidFrame)->SetColIndex(colIndex); if (!foundLastFrame) { mColCount++; tableFrame->InsertCol((nsTableColFrame &)*kidFrame, colIndex); } colIndex++; } if (kidFrame == aLastFrame) { foundLastFrame = PR_TRUE; } kidFrame = kidFrame->GetNextSibling(); } // We have already set the colindex for all the colframes in this // colgroup that come after the first inserted colframe, but there could // be other colgroups following this one and their colframes need // correct colindices too. if (aResetSubsequentColIndices && GetNextSibling()) { ResetColIndices(GetNextSibling(), colIndex); } return rv; } PRBool nsTableColGroupFrame::GetLastRealColGroup(nsTableFrame* aTableFrame, nsIFrame** aLastColGroup) { *aLastColGroup = nsnull; nsFrameList colGroups = aTableFrame->GetColGroups(); nsIFrame* nextToLastColGroup = nsnull; nsIFrame* lastColGroup = colGroups.FirstChild(); while(lastColGroup) { nsIFrame* next = lastColGroup->GetNextSibling(); if (next) { nextToLastColGroup = lastColGroup; lastColGroup = next; } else { break; } } if (!lastColGroup) return PR_TRUE; // there are no col group frames nsTableColGroupType lastColGroupType = ((nsTableColGroupFrame *)lastColGroup)->GetColType(); if (eColGroupAnonymousCell == lastColGroupType) { *aLastColGroup = nextToLastColGroup; return PR_FALSE; } else { *aLastColGroup = lastColGroup; return PR_TRUE; } } // don't set mColCount here, it is done in AddColsToTable NS_IMETHODIMP nsTableColGroupFrame::SetInitialChildList(nsPresContext* aPresContext, nsIAtom* aListName, nsIFrame* aChildList) { nsTableFrame* tableFrame; nsTableFrame::GetTableFrame(this, tableFrame); if (!tableFrame) return NS_ERROR_NULL_POINTER; if (!aChildList) { nsIFrame* firstChild; tableFrame->CreateAnonymousColFrames(this, GetSpan(), eColAnonymousColGroup, PR_FALSE, nsnull, &firstChild); if (firstChild) { SetInitialChildList(aPresContext, aListName, firstChild); } return NS_OK; } mFrames.AppendFrames(this, aChildList); return NS_OK; } NS_IMETHODIMP nsTableColGroupFrame::AppendFrames(nsIAtom* aListName, nsIFrame* aFrameList) { nsTableColFrame* col = GetFirstColumn(); nsTableColFrame* nextCol; while (col && col->GetColType() == eColAnonymousColGroup) { // this colgroup spans one or more columns but now that there is a // real column below, spanned anonymous columns should be removed nextCol = col->GetNextCol(); RemoveFrame(nsnull, col); col = nextCol; } mFrames.AppendFrames(this, aFrameList); InsertColsReflow(GetStartColumnIndex() + mColCount, aFrameList); return NS_OK; } NS_IMETHODIMP nsTableColGroupFrame::InsertFrames(nsIAtom* aListName, nsIFrame* aPrevFrameIn, nsIFrame* aFrameList) { nsFrameList frames(aFrameList); // convience for getting last frame nsIFrame* lastFrame = frames.LastChild(); nsTableColFrame* col = GetFirstColumn(); nsTableColFrame* nextCol; while (col && col->GetColType() == eColAnonymousColGroup) { // this colgroup spans one or more columns but now that there is // real column below, spanned anonymous columns should be removed nextCol = col->GetNextCol(); RemoveFrame(nsnull, col); col = nextCol; } mFrames.InsertFrames(this, aPrevFrameIn, aFrameList); nsIFrame* prevFrame = nsTableFrame::GetFrameAtOrBefore(this, aPrevFrameIn, nsLayoutAtoms::tableColFrame); PRInt32 colIndex = (prevFrame) ? ((nsTableColFrame*)prevFrame)->GetColIndex() + 1 : GetStartColumnIndex(); InsertColsReflow(colIndex, aFrameList, lastFrame); return NS_OK; } void nsTableColGroupFrame::InsertColsReflow(PRInt32 aColIndex, nsIFrame* aFirstFrame, nsIFrame* aLastFrame) { AddColsToTable(aColIndex, PR_TRUE, aFirstFrame, aLastFrame); nsTableFrame* tableFrame; nsTableFrame::GetTableFrame(this, tableFrame); if (!tableFrame) return; // XXX this could be optimized with much effort tableFrame->SetNeedStrategyInit(PR_TRUE); // Generate a reflow command so we reflow the table nsTableFrame::AppendDirtyReflowCommand(tableFrame); } void nsTableColGroupFrame::RemoveChild(nsTableColFrame& aChild, PRBool aResetSubsequentColIndices) { PRInt32 colIndex = 0; nsIFrame* nextChild = nsnull; if (aResetSubsequentColIndices) { colIndex = aChild.GetColIndex(); nextChild = aChild.GetNextSibling(); } if (mFrames.DestroyFrame(GetPresContext(), (nsIFrame*)&aChild)) { mColCount--; if (aResetSubsequentColIndices) { if (nextChild) { // reset inside this and all following colgroups ResetColIndices(this, colIndex, nextChild); } else { nsIFrame* nextGroup = GetNextSibling(); if (nextGroup) // reset next and all following colgroups ResetColIndices(nextGroup, colIndex); } } } nsTableFrame* tableFrame; nsTableFrame::GetTableFrame(this, tableFrame); if (!tableFrame) return; // XXX this could be optimized with much effort tableFrame->SetNeedStrategyInit(PR_TRUE); // Generate a reflow command so we reflow the table nsTableFrame::AppendDirtyReflowCommand(tableFrame); } NS_IMETHODIMP nsTableColGroupFrame::RemoveFrame(nsIAtom* aListName, nsIFrame* aOldFrame) { if (!aOldFrame) return NS_OK; if (nsLayoutAtoms::tableColFrame == aOldFrame->GetType()) { nsTableColFrame* colFrame = (nsTableColFrame*)aOldFrame; PRInt32 colIndex = colFrame->GetColIndex(); RemoveChild(*colFrame, PR_TRUE); nsTableFrame* tableFrame; nsTableFrame::GetTableFrame(this, tableFrame); if (!tableFrame) return NS_ERROR_NULL_POINTER; tableFrame->RemoveCol(this, colIndex, PR_TRUE, PR_TRUE); // XXX This could probably be optimized with much effort tableFrame->SetNeedStrategyInit(PR_TRUE); // Generate a reflow command so we reflow the table nsTableFrame::AppendDirtyReflowCommand(tableFrame); } else { mFrames.DestroyFrame(GetPresContext(), aOldFrame); } return NS_OK; } NS_METHOD nsTableColGroupFrame::Paint(nsPresContext* aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect, nsFramePaintLayer aWhichLayer, PRUint32 aFlags) { PRBool isVisible; if (NS_SUCCEEDED(IsVisibleForPainting(aPresContext, aRenderingContext, PR_FALSE, &isVisible)) && !isVisible) { return NS_OK; } PaintChildren(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer); return NS_OK; } PRIntn nsTableColGroupFrame::GetSkipSides() const { PRIntn skip = 0; if (nsnull != mPrevInFlow) { skip |= 1 << NS_SIDE_TOP; } if (nsnull != mNextInFlow) { skip |= 1 << NS_SIDE_BOTTOM; } return skip; } NS_IMETHODIMP nsTableColGroupFrame::GetFrameForPoint(const nsPoint& aPoint, nsFramePaintLayer aWhichLayer, nsIFrame** aFrame) { // this should act like a block, so we need to override return GetFrameForPointUsing(aPoint, nsnull, aWhichLayer, PR_FALSE, aFrame); } NS_METHOD nsTableColGroupFrame::Reflow(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus) { DO_GLOBAL_REFLOW_COUNT("nsTableColGroupFrame", aReflowState.reason); DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus); NS_ASSERTION(nsnull!=mContent, "bad state -- null content for frame"); nsresult rv=NS_OK; const nsStyleVisibility* groupVis = GetStyleVisibility(); PRBool collapseGroup = (NS_STYLE_VISIBILITY_COLLAPSE == groupVis->mVisible); if (collapseGroup) { nsTableFrame* tableFrame = nsnull; nsTableFrame::GetTableFrame(this, tableFrame); if (tableFrame) { tableFrame->SetNeedToCollapseColumns(PR_TRUE); } } // for every content child that (is a column thingy and does not already have a frame) // create a frame and adjust it's style nsIFrame* kidFrame = nsnull; if (eReflowReason_Incremental == aReflowState.reason) { rv = IncrementalReflow(aDesiredSize, aReflowState, aStatus); } for (kidFrame = mFrames.FirstChild(); kidFrame; kidFrame = kidFrame->GetNextSibling()) { // Give the child frame a chance to reflow, even though we know it'll have 0 size nsHTMLReflowMetrics kidSize(nsnull); // XXX Use a valid reason... nsHTMLReflowState kidReflowState(aPresContext, aReflowState, kidFrame, nsSize(0,0), eReflowReason_Initial); nsReflowStatus status; ReflowChild(kidFrame, aPresContext, kidSize, kidReflowState, 0, 0, 0, status); FinishReflowChild(kidFrame, aPresContext, nsnull, kidSize, 0, 0, 0); } aDesiredSize.width=0; aDesiredSize.height=0; aDesiredSize.ascent=aDesiredSize.height; aDesiredSize.descent=0; if (aDesiredSize.mComputeMEW) { aDesiredSize.mMaxElementWidth=0; } aStatus = NS_FRAME_COMPLETE; NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize); return rv; } NS_METHOD nsTableColGroupFrame::IncrementalReflow(nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus) { // the col group is a target if its path has a reflow command nsHTMLReflowCommand* command = aReflowState.path->mReflowCommand; if (command) IR_TargetIsMe(aDesiredSize, aReflowState, aStatus); // see if the chidren are targets as well nsReflowPath::iterator iter = aReflowState.path->FirstChild(); nsReflowPath::iterator end = aReflowState.path->EndChildren(); for (; iter != end; ++iter) IR_TargetIsChild(aDesiredSize, aReflowState, aStatus, *iter); return NS_OK; } NS_METHOD nsTableColGroupFrame::IR_TargetIsMe(nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus) { nsresult rv = NS_OK; aStatus = NS_FRAME_COMPLETE; switch (aReflowState.path->mReflowCommand->Type()) { case eReflowType_StyleChanged : rv = IR_StyleChanged(aDesiredSize, aReflowState, aStatus); break; case eReflowType_ContentChanged : NS_ASSERTION(PR_FALSE, "illegal reflow type: ContentChanged"); rv = NS_ERROR_ILLEGAL_VALUE; break; default: NS_NOTYETIMPLEMENTED("unexpected reflow command type"); rv = NS_ERROR_NOT_IMPLEMENTED; break; } return rv; } NS_METHOD nsTableColGroupFrame::IR_StyleChanged(nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus) { nsresult rv = NS_OK; // we presume that all the easy optimizations were done in the nsHTMLStyleSheet before we were called here // XXX: we can optimize this when we know which style attribute changed nsTableFrame* tableFrame = nsnull; rv = nsTableFrame::GetTableFrame(this, tableFrame); if (tableFrame) { tableFrame->SetNeedStrategyInit(PR_TRUE); } return rv; } NS_METHOD nsTableColGroupFrame::IR_TargetIsChild(nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus, nsIFrame * aNextFrame) { nsresult rv; // Pass along the reflow command nsHTMLReflowMetrics desiredSize(nsnull); nsPresContext* presContext = GetPresContext(); nsHTMLReflowState kidReflowState(presContext, aReflowState, aNextFrame, nsSize(aReflowState.availableWidth, aReflowState.availableHeight)); rv = ReflowChild(aNextFrame, presContext, desiredSize, kidReflowState, 0, 0, 0, aStatus); aNextFrame->DidReflow(presContext, nsnull, NS_FRAME_REFLOW_FINISHED); if (NS_FAILED(rv)) return rv; nsTableFrame *tableFrame=nsnull; rv = nsTableFrame::GetTableFrame(this, tableFrame); if (tableFrame) { // compare the new col count to the old col count. // If they are the same, we just need to rebalance column widths // If they differ, we need to fix up other column groups and the column cache // XXX for now assume the worse tableFrame->SetNeedStrategyInit(PR_TRUE); } return rv; } nsTableColFrame * nsTableColGroupFrame::GetFirstColumn() { return GetNextColumn(nsnull); } nsTableColFrame * nsTableColGroupFrame::GetNextColumn(nsIFrame *aChildFrame) { nsTableColFrame *result = nsnull; nsIFrame *childFrame = aChildFrame; if (nsnull==childFrame) childFrame = mFrames.FirstChild(); while (nsnull!=childFrame) { if (NS_STYLE_DISPLAY_TABLE_COLUMN == childFrame->GetStyleDisplay()->mDisplay) { result = (nsTableColFrame *)childFrame; break; } childFrame = childFrame->GetNextSibling(); } return result; } PRInt32 nsTableColGroupFrame::GetSpan() { PRInt32 span = 1; nsIContent* iContent = GetContent(); if (!iContent) return NS_OK; // col group element derives from col element nsIDOMHTMLTableColElement* cgContent = nsnull; nsresult rv = iContent->QueryInterface(NS_GET_IID(nsIDOMHTMLTableColElement), (void **)&cgContent); if (cgContent && NS_SUCCEEDED(rv)) { cgContent->GetSpan(&span); // XXX why does this work!! if (span == -1) { span = 1; } NS_RELEASE(cgContent); } return span; } void nsTableColGroupFrame::SetContinuousBCBorderWidth(PRUint8 aForSide, BCPixelSize aPixelValue) { switch (aForSide) { case NS_SIDE_TOP: mTopContBorderWidth = aPixelValue; return; case NS_SIDE_BOTTOM: mBottomContBorderWidth = aPixelValue; return; default: NS_ERROR("invalid side arg"); } } void nsTableColGroupFrame::GetContinuousBCBorderWidth(float aPixelsToTwips, nsMargin& aBorder) { nsTableFrame* table; nsTableFrame::GetTableFrame(this, table); nsTableColFrame* col = table->GetColFrame(mStartColIndex + mColCount - 1); col->GetContinuousBCBorderWidth(aPixelsToTwips, aBorder); aBorder.top = BC_BORDER_BOTTOM_HALF_COORD(aPixelsToTwips, mTopContBorderWidth); aBorder.bottom = BC_BORDER_TOP_HALF_COORD(aPixelsToTwips, mBottomContBorderWidth); return; } /* ----- global methods ----- */ nsresult NS_NewTableColGroupFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame) { NS_PRECONDITION(aNewFrame, "null OUT ptr"); if (nsnull == aNewFrame) { return NS_ERROR_NULL_POINTER; } nsTableColGroupFrame* it = new (aPresShell) nsTableColGroupFrame; if (nsnull == it) { return NS_ERROR_OUT_OF_MEMORY; } *aNewFrame = it; return NS_OK; } NS_IMETHODIMP nsTableColGroupFrame::Init(nsPresContext* aPresContext, nsIContent* aContent, nsIFrame* aParent, nsStyleContext* aContext, nsIFrame* aPrevInFlow) { nsresult rv; // Let the base class do its processing rv = nsHTMLContainerFrame::Init(aPresContext, aContent, aParent, aContext, aPrevInFlow); // record that children that are ignorable whitespace should be excluded mState |= NS_FRAME_EXCLUDE_IGNORABLE_WHITESPACE; return rv; } nsIAtom* nsTableColGroupFrame::GetType() const { return nsLayoutAtoms::tableColGroupFrame; } #ifdef DEBUG NS_IMETHODIMP nsTableColGroupFrame::GetFrameName(nsAString& aResult) const { return MakeFrameName(NS_LITERAL_STRING("TableColGroup"), aResult); } void nsTableColGroupFrame::Dump(PRInt32 aIndent) { char* indent = new char[aIndent + 1]; if (!indent) return; for (PRInt32 i = 0; i < aIndent + 1; i++) { indent[i] = ' '; } indent[aIndent] = 0; printf("%s**START COLGROUP DUMP**\n%s startcolIndex=%d colcount=%d span=%d coltype=", indent, indent, GetStartColumnIndex(), GetColCount(), GetSpan()); nsTableColGroupType colType = GetColType(); switch (colType) { case eColGroupContent: printf(" content "); break; case eColGroupAnonymousCol: printf(" anonymous-column "); break; case eColGroupAnonymousCell: printf(" anonymous-cell "); break; } // verify the colindices PRInt32 j = GetStartColumnIndex(); nsTableColFrame* col = GetFirstColumn(); while (col) { NS_ASSERTION(j == col->GetColIndex(), "wrong colindex on col frame"); col = col->GetNextCol(); j++; } NS_ASSERTION((j - GetStartColumnIndex()) == GetColCount(), "number of cols out of sync"); printf("\n%s**END COLGROUP DUMP** ", indent); delete [] indent; } #endif