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RetroZilla/editor/libeditor/html/nsHTMLEditRules.h
Ryan Nematz 2f2ae146c0 first commit
2015-10-20 23:03:22 -04:00

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/* -*- 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):
* Daniel Glazman <glazman@netscape.com>
*
* 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 ***** */
#ifndef nsHTMLEditRules_h__
#define nsHTMLEditRules_h__
#include "nsTextEditRules.h"
#include "nsIHTMLEditRules.h"
#include "nsIEditActionListener.h"
#include "nsCOMArray.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "nsEditorUtils.h"
#include "TypeInState.h"
#include "nsReadableUtils.h"
class nsVoidArray;
class nsIDOMElement;
class nsIEditor;
class nsHTMLEditor;
struct StyleCache : public PropItem
{
PRBool mPresent;
StyleCache() : PropItem(nsnull, EmptyString(), EmptyString()), mPresent(PR_FALSE){};
StyleCache(nsIAtom *aTag, const nsAString &aAttr, const nsAString &aValue) :
PropItem(aTag, aAttr, aValue), mPresent(PR_FALSE) {};
~StyleCache() {};
};
#define SIZE_STYLE_TABLE 19
class nsHTMLEditRules : public nsIHTMLEditRules, public nsTextEditRules, public nsIEditActionListener
{
public:
NS_DECL_ISUPPORTS_INHERITED
nsHTMLEditRules();
virtual ~nsHTMLEditRules();
// nsIEditRules methods
NS_IMETHOD Init(nsPlaintextEditor *aEditor, PRUint32 aFlags);
NS_IMETHOD BeforeEdit(PRInt32 action, nsIEditor::EDirection aDirection);
NS_IMETHOD AfterEdit(PRInt32 action, nsIEditor::EDirection aDirection);
NS_IMETHOD WillDoAction(nsISelection *aSelection, nsRulesInfo *aInfo, PRBool *aCancel, PRBool *aHandled);
NS_IMETHOD DidDoAction(nsISelection *aSelection, nsRulesInfo *aInfo, nsresult aResult);
// nsIHTMLEditRules methods
NS_IMETHOD GetListState(PRBool *aMixed, PRBool *aOL, PRBool *aUL, PRBool *aDL);
NS_IMETHOD GetListItemState(PRBool *aMixed, PRBool *aLI, PRBool *aDT, PRBool *aDD);
NS_IMETHOD GetIndentState(PRBool *aCanIndent, PRBool *aCanOutdent);
NS_IMETHOD GetAlignment(PRBool *aMixed, nsIHTMLEditor::EAlignment *aAlign);
NS_IMETHOD GetParagraphState(PRBool *aMixed, nsAString &outFormat);
NS_IMETHOD MakeSureElemStartsOrEndsOnCR(nsIDOMNode *aNode);
// nsIEditActionListener methods
NS_IMETHOD WillCreateNode(const nsAString& aTag, nsIDOMNode *aParent, PRInt32 aPosition);
NS_IMETHOD DidCreateNode(const nsAString& aTag, nsIDOMNode *aNode, nsIDOMNode *aParent, PRInt32 aPosition, nsresult aResult);
NS_IMETHOD WillInsertNode(nsIDOMNode *aNode, nsIDOMNode *aParent, PRInt32 aPosition);
NS_IMETHOD DidInsertNode(nsIDOMNode *aNode, nsIDOMNode *aParent, PRInt32 aPosition, nsresult aResult);
NS_IMETHOD WillDeleteNode(nsIDOMNode *aChild);
NS_IMETHOD DidDeleteNode(nsIDOMNode *aChild, nsresult aResult);
NS_IMETHOD WillSplitNode(nsIDOMNode *aExistingRightNode, PRInt32 aOffset);
NS_IMETHOD DidSplitNode(nsIDOMNode *aExistingRightNode, PRInt32 aOffset, nsIDOMNode *aNewLeftNode, nsresult aResult);
NS_IMETHOD WillJoinNodes(nsIDOMNode *aLeftNode, nsIDOMNode *aRightNode, nsIDOMNode *aParent);
NS_IMETHOD DidJoinNodes(nsIDOMNode *aLeftNode, nsIDOMNode *aRightNode, nsIDOMNode *aParent, nsresult aResult);
NS_IMETHOD WillInsertText(nsIDOMCharacterData *aTextNode, PRInt32 aOffset, const nsAString &aString);
NS_IMETHOD DidInsertText(nsIDOMCharacterData *aTextNode, PRInt32 aOffset, const nsAString &aString, nsresult aResult);
NS_IMETHOD WillDeleteText(nsIDOMCharacterData *aTextNode, PRInt32 aOffset, PRInt32 aLength);
NS_IMETHOD DidDeleteText(nsIDOMCharacterData *aTextNode, PRInt32 aOffset, PRInt32 aLength, nsresult aResult);
NS_IMETHOD WillDeleteRange(nsIDOMRange *aRange);
NS_IMETHOD DidDeleteRange(nsIDOMRange *aRange);
NS_IMETHOD WillDeleteSelection(nsISelection *aSelection);
NS_IMETHOD DidDeleteSelection(nsISelection *aSelection);
protected:
enum RulesEndpoint
{
kStart,
kEnd
};
enum BRLocation
{
kBeforeBlock,
kBlockEnd
};
// nsHTMLEditRules implementation methods
nsresult WillInsert(nsISelection *aSelection, PRBool *aCancel);
#ifdef XXX_DEAD_CODE
nsresult DidInsert(nsISelection *aSelection, nsresult aResult);
#endif
nsresult WillInsertText( PRInt32 aAction,
nsISelection *aSelection,
PRBool *aCancel,
PRBool *aHandled,
const nsAString *inString,
nsAString *outString,
PRInt32 aMaxLength);
nsresult WillLoadHTML(nsISelection *aSelection, PRBool *aCancel);
nsresult WillInsertBreak(nsISelection *aSelection, PRBool *aCancel, PRBool *aHandled);
nsresult StandardBreakImpl(nsIDOMNode *aNode, PRInt32 aOffset, nsISelection *aSelection);
nsresult DidInsertBreak(nsISelection *aSelection, nsresult aResult);
nsresult SplitMailCites(nsISelection *aSelection, PRBool aPlaintext, PRBool *aHandled);
nsresult WillDeleteSelection(nsISelection *aSelection, nsIEditor::EDirection aAction,
PRBool *aCancel, PRBool *aHandled);
nsresult DidDeleteSelection(nsISelection *aSelection,
nsIEditor::EDirection aDir,
nsresult aResult);
nsresult InsertBRIfNeeded(nsISelection *aSelection);
nsresult GetGoodSelPointForNode(nsIDOMNode *aNode, nsIEditor::EDirection aAction,
nsCOMPtr<nsIDOMNode> *outSelNode, PRInt32 *outSelOffset);
nsresult JoinBlocks(nsCOMPtr<nsIDOMNode> *aLeftBlock, nsCOMPtr<nsIDOMNode> *aRightBlock, PRBool *aCanceled);
nsresult MoveBlock(nsIDOMNode *aLeft, nsIDOMNode *aRight, PRInt32 aLeftOffset, PRInt32 aRightOffset);
nsresult MoveNodeSmart(nsIDOMNode *aSource, nsIDOMNode *aDest, PRInt32 *aOffset);
nsresult MoveContents(nsIDOMNode *aSource, nsIDOMNode *aDest, PRInt32 *aOffset);
nsresult DeleteNonTableElements(nsIDOMNode *aNode);
nsresult WillMakeList(nsISelection *aSelection, const nsAString *aListType, PRBool aEntireList, const nsAString *aBulletType, PRBool *aCancel, PRBool *aHandled, const nsAString *aItemType=nsnull);
nsresult WillRemoveList(nsISelection *aSelection, PRBool aOrderd, PRBool *aCancel, PRBool *aHandled);
nsresult WillIndent(nsISelection *aSelection, PRBool *aCancel, PRBool *aHandled);
nsresult WillCSSIndent(nsISelection *aSelection, PRBool *aCancel, PRBool *aHandled);
nsresult WillHTMLIndent(nsISelection *aSelection, PRBool *aCancel, PRBool *aHandled);
nsresult WillOutdent(nsISelection *aSelection, PRBool *aCancel, PRBool *aHandled);
nsresult WillAlign(nsISelection *aSelection, const nsAString *alignType, PRBool *aCancel, PRBool *aHandled);
nsresult WillAbsolutePosition(nsISelection *aSelection, PRBool *aCancel, PRBool * aHandled);
nsresult WillRemoveAbsolutePosition(nsISelection *aSelection, PRBool *aCancel, PRBool * aHandled);
nsresult WillRelativeChangeZIndex(nsISelection *aSelection, PRInt32 aChange, PRBool *aCancel, PRBool * aHandled);
nsresult WillMakeDefListItem(nsISelection *aSelection, const nsAString *aBlockType, PRBool aEntireList, PRBool *aCancel, PRBool *aHandled);
nsresult WillMakeBasicBlock(nsISelection *aSelection, const nsAString *aBlockType, PRBool *aCancel, PRBool *aHandled);
nsresult DidMakeBasicBlock(nsISelection *aSelection, nsRulesInfo *aInfo, nsresult aResult);
nsresult DidAbsolutePosition();
nsresult AlignInnerBlocks(nsIDOMNode *aNode, const nsAString *alignType);
nsresult AlignBlockContents(nsIDOMNode *aNode, const nsAString *alignType);
nsresult AppendInnerFormatNodes(nsCOMArray<nsIDOMNode>& aArray,
nsIDOMNode *aNode);
nsresult GetFormatString(nsIDOMNode *aNode, nsAString &outFormat);
nsresult GetInnerContent(nsIDOMNode *aNode, nsCOMArray<nsIDOMNode>& outArrayOfNodes, PRInt32 *aIndex, PRBool aList = PR_TRUE, PRBool aTble = PR_TRUE);
nsCOMPtr<nsIDOMNode> IsInListItem(nsIDOMNode *aNode);
nsresult ReturnInHeader(nsISelection *aSelection, nsIDOMNode *aHeader, nsIDOMNode *aTextNode, PRInt32 aOffset);
nsresult ReturnInParagraph(nsISelection *aSelection, nsIDOMNode *aHeader, nsIDOMNode *aTextNode, PRInt32 aOffset, PRBool *aCancel, PRBool *aHandled);
nsresult SplitParagraph(nsIDOMNode *aPara,
nsIDOMNode *aBRNode,
nsISelection *aSelection,
nsCOMPtr<nsIDOMNode> *aSelNode,
PRInt32 *aOffset);
nsresult ReturnInListItem(nsISelection *aSelection, nsIDOMNode *aHeader, nsIDOMNode *aTextNode, PRInt32 aOffset);
nsresult AfterEditInner(PRInt32 action, nsIEditor::EDirection aDirection);
nsresult RemovePartOfBlock(nsIDOMNode *aBlock,
nsIDOMNode *aStartChild,
nsIDOMNode *aEndChild,
nsCOMPtr<nsIDOMNode> *aLeftNode = 0,
nsCOMPtr<nsIDOMNode> *aRightNode = 0);
nsresult SplitBlock(nsIDOMNode *aBlock,
nsIDOMNode *aStartChild,
nsIDOMNode *aEndChild,
nsCOMPtr<nsIDOMNode> *aLeftNode = 0,
nsCOMPtr<nsIDOMNode> *aRightNode = 0,
nsCOMPtr<nsIDOMNode> *aMiddleNode = 0);
nsresult OutdentPartOfBlock(nsIDOMNode *aBlock,
nsIDOMNode *aStartChild,
nsIDOMNode *aEndChild,
PRBool aIsBlockIndentedWithCSS,
nsCOMPtr<nsIDOMNode> *aLeftNode = 0,
nsCOMPtr<nsIDOMNode> *aRightNode = 0);
nsresult ConvertListType(nsIDOMNode *aList, nsCOMPtr<nsIDOMNode> *outList, const nsAString& aListType, const nsAString& aItemType);
nsresult CreateStyleForInsertText(nsISelection *aSelection, nsIDOMDocument *aDoc);
nsresult IsEmptyBlock(nsIDOMNode *aNode,
PRBool *outIsEmptyBlock,
PRBool aMozBRDoesntCount = PR_FALSE,
PRBool aListItemsNotEmpty = PR_FALSE);
nsresult CheckForEmptyBlock(nsIDOMNode *aStartNode,
nsIDOMNode *aBodyNode,
nsISelection *aSelection,
PRBool *aHandled);
nsresult CheckForInvisibleBR(nsIDOMNode *aBlock, nsHTMLEditRules::BRLocation aWhere,
nsCOMPtr<nsIDOMNode> *outBRNode, PRInt32 aOffset=0);
PRBool ExpandSelectionForDeletion(nsISelection *aSelection);
PRBool IsFirstNode(nsIDOMNode *aNode);
PRBool IsLastNode(nsIDOMNode *aNode);
#ifdef XXX_DEAD_CODE
PRBool AtStartOfBlock(nsIDOMNode *aNode, PRInt32 aOffset, nsIDOMNode *aBlock);
PRBool AtEndOfBlock(nsIDOMNode *aNode, PRInt32 aOffset, nsIDOMNode *aBlock);
#endif
nsresult NormalizeSelection(nsISelection *inSelection);
nsresult GetPromotedPoint(RulesEndpoint aWhere, nsIDOMNode *aNode, PRInt32 aOffset,
PRInt32 actionID, nsCOMPtr<nsIDOMNode> *outNode, PRInt32 *outOffset);
nsresult GetPromotedRanges(nsISelection *inSelection,
nsCOMArray<nsIDOMRange> &outArrayOfRanges,
PRInt32 inOperationType);
nsresult PromoteRange(nsIDOMRange *inRange, PRInt32 inOperationType);
nsresult GetNodesForOperation(nsCOMArray<nsIDOMRange>& inArrayOfRanges,
nsCOMArray<nsIDOMNode>& outArrayOfNodes,
PRInt32 inOperationType,
PRBool aDontTouchContent=PR_FALSE);
nsresult GetChildNodesForOperation(nsIDOMNode *inNode,
nsCOMArray<nsIDOMNode>& outArrayOfNodes);
nsresult GetNodesFromPoint(DOMPoint point,
PRInt32 operation,
nsCOMArray<nsIDOMNode>& arrayOfNodes,
PRBool dontTouchContent);
nsresult GetNodesFromSelection(nsISelection *selection,
PRInt32 operation,
nsCOMArray<nsIDOMNode>& arrayOfNodes,
PRBool aDontTouchContent=PR_FALSE);
nsresult GetListActionNodes(nsCOMArray<nsIDOMNode> &outArrayOfNodes, PRBool aEntireList, PRBool aDontTouchContent=PR_FALSE);
nsresult GetDefinitionListItemTypes(nsIDOMNode *aNode, PRBool &aDT, PRBool &aDD);
nsresult GetParagraphFormatNodes(nsCOMArray<nsIDOMNode>& outArrayOfNodes, PRBool aDontTouchContent=PR_FALSE);
nsresult LookInsideDivBQandList(nsCOMArray<nsIDOMNode>& aNodeArray);
nsresult BustUpInlinesAtRangeEndpoints(nsRangeStore &inRange);
nsresult BustUpInlinesAtBRs(nsIDOMNode *inNode,
nsCOMArray<nsIDOMNode>& outArrayOfNodes);
nsCOMPtr<nsIDOMNode> GetHighestInlineParent(nsIDOMNode* aNode);
nsresult MakeTransitionList(nsCOMArray<nsIDOMNode>& inArrayOfNodes,
nsVoidArray &inTransitionArray);
nsresult RemoveBlockStyle(nsCOMArray<nsIDOMNode>& arrayOfNodes);
nsresult ApplyBlockStyle(nsCOMArray<nsIDOMNode>& arrayOfNodes, const nsAString *aBlockTag);
nsresult MakeBlockquote(nsCOMArray<nsIDOMNode>& arrayOfNodes);
nsresult SplitAsNeeded(const nsAString *aTag, nsCOMPtr<nsIDOMNode> *inOutParent, PRInt32 *inOutOffset);
nsresult AddTerminatingBR(nsIDOMNode *aBlock);
nsresult JoinNodesSmart( nsIDOMNode *aNodeLeft,
nsIDOMNode *aNodeRight,
nsCOMPtr<nsIDOMNode> *aOutMergeParent,
PRInt32 *aOutMergeOffset);
nsresult GetTopEnclosingMailCite(nsIDOMNode *aNode, nsCOMPtr<nsIDOMNode> *aOutCiteNode, PRBool aPlaintext);
nsresult PopListItem(nsIDOMNode *aListItem, PRBool *aOutOfList);
nsresult RemoveListStructure(nsIDOMNode *aList);
nsresult CacheInlineStyles(nsIDOMNode *aNode);
nsresult ReapplyCachedStyles();
nsresult ClearCachedStyles();
nsresult AdjustSpecialBreaks(PRBool aSafeToAskFrames = PR_FALSE);
nsresult AdjustWhitespace(nsISelection *aSelection);
nsresult PinSelectionToNewBlock(nsISelection *aSelection);
nsresult CheckInterlinePosition(nsISelection *aSelection);
nsresult AdjustSelection(nsISelection *aSelection, nsIEditor::EDirection aAction);
nsresult FindNearSelectableNode(nsIDOMNode *aSelNode,
PRInt32 aSelOffset,
nsIEditor::EDirection &aDirection,
nsCOMPtr<nsIDOMNode> *outSelectableNode);
nsresult InDifferentTableElements(nsIDOMNode *aNode1, nsIDOMNode *aNode2, PRBool *aResult);
nsresult RemoveEmptyNodes();
nsresult SelectionEndpointInNode(nsIDOMNode *aNode, PRBool *aResult);
nsresult UpdateDocChangeRange(nsIDOMRange *aRange);
nsresult ConfirmSelectionInBody();
nsresult InsertMozBRIfNeeded(nsIDOMNode *aNode);
PRBool IsEmptyInline(nsIDOMNode *aNode);
PRBool ListIsEmptyLine(nsCOMArray<nsIDOMNode> &arrayOfNodes);
nsresult RemoveAlignment(nsIDOMNode * aNode, const nsAString & aAlignType, PRBool aChildrenOnly);
nsresult MakeSureElemStartsOrEndsOnCR(nsIDOMNode *aNode, PRBool aStarts);
nsresult AlignBlock(nsIDOMElement * aElement, const nsAString * aAlignType, PRBool aContentsOnly);
nsresult RelativeChangeIndentationOfElementNode(nsIDOMNode *aNode, PRInt8 aRelativeChange);
// data members
protected:
nsHTMLEditor *mHTMLEditor;
nsCOMPtr<nsIDOMRange> mDocChangeRange;
PRPackedBool mListenerEnabled;
PRPackedBool mReturnInEmptyLIKillsList;
PRPackedBool mDidDeleteSelection;
PRPackedBool mDidRangedDelete;
nsCOMPtr<nsIDOMRange> mUtilRange;
PRUint32 mJoinOffset; // need to remember an int across willJoin/didJoin...
nsCOMPtr<nsIDOMNode> mNewBlock;
nsRangeStore mRangeItem;
StyleCache mCachedStyles[SIZE_STYLE_TABLE];
};
nsresult NS_NewHTMLEditRules(nsIEditRules** aInstancePtrResult);
#endif //nsHTMLEditRules_h__
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