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gecko-dev/editor/libeditor/html/nsHTMLEditor.h
glazman%netscape.com 0da80aab17 Support for Absolute Positioning, Snap to Grid, and Inline Table Editing in Composer 
r=brade, sr=jst
2003-06-25 08:50:48 +00:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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>
* Kathleen Brade <brade@netscape.com>
*
*
* Alternatively, the contents of this file may be used under the terms of
* either 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 NPL, 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 NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsHTMLEditor_h__
#define nsHTMLEditor_h__
#include "nsCOMPtr.h"
#include "nsCOMArray.h"
#include "nsPlaintextEditor.h"
#include "nsIEditor.h"
#include "nsIHTMLEditor.h"
#include "nsITableEditor.h"
#include "nsIEditorMailSupport.h"
#include "nsIEditorStyleSheets.h"
#include "nsEditor.h"
#include "nsIDOMElement.h"
#include "nsIDOMEventListener.h"
#include "nsICSSLoader.h"
#include "nsICSSLoaderObserver.h"
#include "nsITableLayout.h"
#include "nsIRangeUtils.h"
#include "nsEditRules.h"
#include "nsEditProperty.h"
#include "nsHTMLCSSUtils.h"
#include "nsIParserService.h"
#include "nsVoidArray.h"
#include "nsHTMLObjectResizer.h"
#include "nsIHTMLAbsPosEditor.h"
#include "nsIHTMLInlineTableEditor.h"
#include "nsIHTMLObjectResizeListener.h"
#include "nsIDocumentObserver.h"
#include "nsPoint.h"
class nsIDOMKeyEvent;
class nsITransferable;
class nsIDOMEventReceiver;
class nsIDOMNSRange;
class nsIDocumentEncoder;
class nsIClipboard;
class TypeInState;
class nsIContentFilter;
/**
* The HTML editor implementation.<br>
* Use to edit HTML document represented as a DOM tree.
*/
class nsHTMLEditor : public nsPlaintextEditor,
public nsIHTMLEditor,
public nsIHTMLObjectResizer,
public nsIHTMLAbsPosEditor,
public nsITableEditor,
public nsIHTMLInlineTableEditor,
public nsIEditorStyleSheets,
public nsICSSLoaderObserver
{
typedef enum {eNoOp, eReplaceParent=1, eInsertParent=2} BlockTransformationType;
public:
enum OperationID
{
kOpInsertBreak = 3000,
kOpMakeList = 3001,
kOpIndent = 3002,
kOpOutdent = 3003,
kOpAlign = 3004,
kOpMakeBasicBlock = 3005,
kOpRemoveList = 3006,
kOpMakeDefListItem = 3007,
kOpInsertElement = 3008,
kOpInsertQuotation = 3009,
kOpSetTextProperty = 3010,
kOpRemoveTextProperty = 3011,
kOpHTMLPaste = 3012,
kOpLoadHTML = 3013,
kOpResetTextProperties = 3014,
kOpSetAbsolutePosition = 3015,
kOpRemoveAbsolutePosition = 3016,
kOpDecreaseZIndex = 3017,
kOpIncreaseZIndex = 3018
};
enum ResizingRequestID
{
kX = 0,
kY = 1,
kWidth = 2,
kHeight = 3
};
// see nsIHTMLEditor for documentation
//Interfaces for addref and release and queryinterface
//NOTE macro used is for classes that inherit from
// another class. Only the base class should use NS_DECL_ISUPPORTS
NS_DECL_ISUPPORTS_INHERITED
nsHTMLEditor();
virtual ~nsHTMLEditor();
/* ------------ nsPlaintextEditor overrides -------------- */
NS_IMETHODIMP HandleKeyPress(nsIDOMKeyEvent* aKeyEvent);
NS_IMETHODIMP CollapseSelectionToStart();
NS_IMETHOD GetIsDocumentEditable(PRBool *aIsDocumentEditable);
NS_IMETHODIMP BeginningOfDocument();
/* ------------ nsIHTMLEditor methods -------------- */
NS_DECL_NSIHTMLEDITOR
/* ------------ nsIHTMLObjectResizer methods -------------- */
/* -------- Implemented in nsHTMLObjectResizer.cpp -------- */
NS_DECL_NSIHTMLOBJECTRESIZER
/* ------------ nsIHTMLAbsPosEditor methods -------------- */
/* -------- Implemented in nsHTMLAbsPosition.cpp --------- */
NS_DECL_NSIHTMLABSPOSEDITOR
/* ------------ nsIHTMLInlineTableEditor methods -------------- */
/* ------- Implemented in nsHTMLInlineTableEditor.cpp --------- */
NS_DECL_NSIHTMLINLINETABLEEDITOR
/* ------------ nsIHTMLEditor methods -------------- */
NS_IMETHOD CopyLastEditableChildStyles(nsIDOMNode *aPreviousBlock, nsIDOMNode *aNewBlock,
nsIDOMNode **aOutBrNode);
NS_IMETHOD LoadHTML(const nsAString &aInputString);
NS_IMETHOD GetParentBlockTags(nsStringArray *aTagList, PRBool aGetLists);
nsresult GetCSSBackgroundColorState(PRBool *aMixed, nsAString &aOutColor,
PRBool aBlockLevel);
NS_IMETHOD GetHTMLBackgroundColorState(PRBool *aMixed, nsAString &outColor);
NS_IMETHOD GetHighlightColor(PRBool *mixed, PRUnichar **_retval);
NS_IMETHOD GetNextElementByTagName(nsIDOMElement *aCurrentElement, const nsAString *aTagName, nsIDOMElement **aReturn);
/* ------------ nsIEditorIMESupport overrides -------------- */
NS_IMETHOD SetCompositionString(const nsAString& aCompositionString, nsIPrivateTextRangeList* aTextRangeList,nsTextEventReply* aReply);
NS_IMETHOD GetReconversionString(nsReconversionEventReply* aReply);
/* ------------ nsIEditorStyleSheets methods -------------- */
NS_IMETHOD AddStyleSheet(const nsAString & aURL);
NS_IMETHOD ReplaceStyleSheet(const nsAString& aURL);
NS_IMETHOD RemoveStyleSheet(const nsAString &aURL);
NS_IMETHOD AddOverrideStyleSheet(const nsAString & aURL);
NS_IMETHOD ReplaceOverrideStyleSheet(const nsAString& aURL);
NS_IMETHOD RemoveOverrideStyleSheet(const nsAString &aURL);
NS_IMETHOD EnableStyleSheet(const nsAString& aURL, PRBool aEnable);
/* ------------ nsIEditorMailSupport methods -------------- */
NS_IMETHOD PasteAsQuotation(PRInt32 aSelectionType);
NS_IMETHOD InsertTextWithQuotations(const nsAString & aQuotedText);
NS_IMETHOD InsertAsQuotation(const nsAString & aQuotedText,
nsIDOMNode **aNodeInserted);
NS_IMETHOD PasteAsCitedQuotation(const nsAString & aCitation,
PRInt32 aSelectionType);
NS_IMETHOD InsertAsCitedQuotation(const nsAString & aQuotedText,
const nsAString & aCitation,
PRBool aInsertHTML,
nsIDOMNode **aNodeInserted);
NS_IMETHOD GetEmbeddedObjects(nsISupportsArray** aNodeList);
/* ------------ nsITableEditor methods -------------- */
NS_IMETHOD InsertTableCell(PRInt32 aNumber, PRBool aAfter);
NS_IMETHOD InsertTableColumn(PRInt32 aNumber, PRBool aAfter);
NS_IMETHOD InsertTableRow(PRInt32 aNumber, PRBool aAfter);
NS_IMETHOD DeleteTable();
NS_IMETHOD DeleteTableCell(PRInt32 aNumber);
NS_IMETHOD DeleteTableCellContents();
NS_IMETHOD DeleteTableColumn(PRInt32 aNumber);
NS_IMETHOD DeleteTableRow(PRInt32 aNumber);
NS_IMETHOD SelectTableCell();
NS_IMETHOD SelectBlockOfCells(nsIDOMElement *aStartCell, nsIDOMElement *aEndCell);
NS_IMETHOD SelectTableRow();
NS_IMETHOD SelectTableColumn();
NS_IMETHOD SelectTable();
NS_IMETHOD SelectAllTableCells();
NS_IMETHOD SwitchTableCellHeaderType(nsIDOMElement *aSourceCell, nsIDOMElement **aNewCell);
NS_IMETHOD JoinTableCells(PRBool aMergeNonContiguousContents);
NS_IMETHOD SplitTableCell();
NS_IMETHOD NormalizeTable(nsIDOMElement *aTable);
NS_IMETHOD GetCellIndexes(nsIDOMElement *aCell,
PRInt32* aRowIndex, PRInt32* aColIndex);
NS_IMETHOD GetTableSize(nsIDOMElement *aTable,
PRInt32* aRowCount, PRInt32* aColCount);
NS_IMETHOD GetCellAt(nsIDOMElement* aTable, PRInt32 aRowIndex, PRInt32 aColIndex, nsIDOMElement **aCell);
NS_IMETHOD GetCellDataAt(nsIDOMElement* aTable,
PRInt32 aRowIndex, PRInt32 aColIndex,
nsIDOMElement **aCell,
PRInt32* aStartRowIndex, PRInt32* aStartColIndex,
PRInt32* aRowSpan, PRInt32* aColSpan,
PRInt32* aActualRowSpan, PRInt32* aActualColSpan,
PRBool* aIsSelected);
NS_IMETHOD GetFirstRow(nsIDOMElement* aTableElement, nsIDOMNode** aRowNode);
NS_IMETHOD GetNextRow(nsIDOMNode* aCurrentRowNode, nsIDOMNode** aRowNode);
NS_IMETHOD GetFirstCellInRow(nsIDOMNode* aRowNode, nsIDOMNode** aCellNode);
NS_IMETHOD GetNextCellInRow(nsIDOMNode* aCurrentCellNode, nsIDOMNode** aRowNode);
NS_IMETHOD GetLastCellInRow(nsIDOMNode* aRowNode, nsIDOMNode** aCellNode);
NS_IMETHOD SetSelectionAfterTableEdit(nsIDOMElement* aTable, PRInt32 aRow, PRInt32 aCol,
PRInt32 aDirection, PRBool aSelected);
NS_IMETHOD GetSelectedOrParentTableElement(nsAString& aTagName,
PRInt32 *aSelectedCount,
nsIDOMElement** aTableElement);
NS_IMETHOD GetSelectedCellsType(nsIDOMElement *aElement, PRUint32 *aSelectionType);
nsresult GetCellFromRange(nsIDOMRange *aRange, nsIDOMElement **aCell);
// Finds the first selected cell in first range of selection
// This is in the *order of selection*, not order in the table
// (i.e., each cell added to selection is added in another range
// in the selection's rangelist, independent of location in table)
// aRange is optional: returns the range around the cell
NS_IMETHOD GetFirstSelectedCell(nsIDOMRange **aRange, nsIDOMElement **aCell);
// Get next cell until no more are found. Always use GetFirstSelected cell first
// aRange is optional: returns the range around the cell
NS_IMETHOD GetNextSelectedCell(nsIDOMRange **aRange, nsIDOMElement **aCell);
// Upper-left-most selected cell in table
NS_IMETHOD GetFirstSelectedCellInTable(PRInt32 *aRowIndex, PRInt32 *aColIndex, nsIDOMElement **aCell);
/* miscellaneous */
// This sets background on the appropriate container element (table, cell,)
// or calls into nsTextEditor to set the page background
NS_IMETHOD SetCSSBackgroundColor(const nsAString& aColor);
NS_IMETHOD SetHTMLBackgroundColor(const nsAString& aColor);
/* ------------ Block methods moved from nsEditor -------------- */
static nsCOMPtr<nsIDOMNode> GetBlockNodeParent(nsIDOMNode *aNode);
static PRBool HasSameBlockNodeParent(nsIDOMNode *aNode1, nsIDOMNode *aNode2);
/** Determines the bounding nodes for the block section containing aNode.
* The calculation is based on some nodes intrinsically being block elements
* acording to HTML. Style sheets are not considered in this calculation.
* <BR> tags separate block content sections. So the HTML markup:
* <PRE>
* <P>text1<BR>text2<B>text3</B></P>
* </PRE>
* contains two block content sections. The first has the text node "text1"
* for both endpoints. The second has "text2" as the left endpoint and
* "text3" as the right endpoint.
* Notice that offsets aren't required, only leaf nodes. Offsets are implicit.
*
* @param aNode the block content returned includes aNode
* @param aLeftNode [OUT] the left endpoint of the block content containing aNode
* @param aRightNode [OUT] the right endpoint of the block content containing aNode
*
*/
static nsresult GetBlockSection(nsIDOMNode *aNode,
nsIDOMNode **aLeftNode,
nsIDOMNode **aRightNode);
/** Compute the set of block sections in a given range.
* A block section is the set of (leftNode, rightNode) pairs given
* by GetBlockSection. The set is computed by computing the
* block section for every leaf node in the range and throwing
* out duplicates.
*
* @param aRange The range to compute block sections for.
* @param aSections Allocated storage for the resulting set, stored as nsIDOMRanges.
*/
static nsresult GetBlockSectionsForRange(nsIDOMRange *aRange,
nsCOMArray<nsIDOMRange>& aSections);
static nsCOMPtr<nsIDOMNode> NextNodeInBlock(nsIDOMNode *aNode, IterDirection aDir);
nsresult IsNextCharWhitespace(nsIDOMNode *aParentNode,
PRInt32 aOffset,
PRBool *outIsSpace,
PRBool *outIsNBSP,
nsCOMPtr<nsIDOMNode> *outNode = 0,
PRInt32 *outOffset = 0);
nsresult IsPrevCharWhitespace(nsIDOMNode *aParentNode,
PRInt32 aOffset,
PRBool *outIsSpace,
PRBool *outIsNBSP,
nsCOMPtr<nsIDOMNode> *outNode = 0,
PRInt32 *outOffset = 0);
/* ------------ Overrides of nsEditor interface methods -------------- */
nsresult EndUpdateViewBatch();
/** prepare the editor for use */
NS_IMETHOD Init(nsIDOMDocument *aDoc, nsIPresShell *aPresShell, nsIContent *aRoot, nsISelectionController *aSelCon, PRUint32 aFlags);
/** Internal, static version */
static nsresult NodeIsBlockStatic(nsIDOMNode *aNode, PRBool *aIsBlock);
/** we override this here to install event listeners */
NS_IMETHOD PostCreate();
NS_IMETHOD GetFlags(PRUint32 *aFlags);
NS_IMETHOD SetFlags(PRUint32 aFlags);
NS_IMETHOD Paste(PRInt32 aSelectionType);
NS_IMETHOD CanPaste(PRInt32 aSelectionType, PRBool *aCanPaste);
NS_IMETHOD DebugUnitTests(PRInt32 *outNumTests, PRInt32 *outNumTestsFailed);
/** All editor operations which alter the doc should be prefaced
* with a call to StartOperation, naming the action and direction */
NS_IMETHOD StartOperation(PRInt32 opID, nsIEditor::EDirection aDirection);
/** All editor operations which alter the doc should be followed
* with a call to EndOperation */
NS_IMETHOD EndOperation();
/** returns PR_TRUE if aParentTag can contain a child of type aChildTag */
virtual PRBool TagCanContainTag(const nsAString& aParentTag, const nsAString& aChildTag);
/** make the given selection span the entire document */
NS_IMETHOD SelectEntireDocument(nsISelection *aSelection);
NS_IMETHOD SetAttributeOrEquivalent(nsIDOMElement * aElement,
const nsAString & aAttribute,
const nsAString & aValue,
PRBool aSuppressTransaction);
NS_IMETHOD RemoveAttributeOrEquivalent(nsIDOMElement * aElement,
const nsAString & aAttribute,
PRBool aSuppressTransaction);
/** join together any afjacent editable text nodes in the range */
NS_IMETHOD CollapseAdjacentTextNodes(nsIDOMRange *aInRange);
virtual PRBool NodesSameType(nsIDOMNode *aNode1, nsIDOMNode *aNode2);
NS_IMETHODIMP DeleteNode(nsIDOMNode * aNode);
NS_IMETHODIMP DeleteText(nsIDOMCharacterData *aTextNode,
PRUint32 aOffset,
PRUint32 aLength);
/* ------------ nsICSSLoaderObserver -------------- */
NS_IMETHOD StyleSheetLoaded(nsICSSStyleSheet*aSheet, PRBool aNotify);
/* ------------ Utility Routines, not part of public API -------------- */
NS_IMETHOD TypedText(const nsAString& aString, PRInt32 aAction);
nsresult InsertNodeAtPoint( nsIDOMNode *aNode,
nsCOMPtr<nsIDOMNode> *ioParent,
PRInt32 *ioOffset,
PRBool aNoEmptyNodes);
nsCOMPtr<nsIDOMNode> FindUserSelectAllNode(nsIDOMNode *aNode);
/** returns the absolute position of the end points of aSelection
* in the document as a text stream.
*/
nsresult GetTextSelectionOffsets(nsISelection *aSelection,
PRInt32 &aStartOffset,
PRInt32 &aEndOffset);
nsresult GetAbsoluteOffsetsForPoints(nsIDOMNode *aInStartNode,
PRInt32 aInStartOffset,
nsIDOMNode *aInEndNode,
PRInt32 aInEndOffset,
nsIDOMNode *aInCommonParentNode,
PRInt32 &aOutStartOffset,
PRInt32 &aEndOffset);
// Use this to assure that selection is set after attribute nodes when
// trying to collapse selection at begining of a block node
// e.g., when setting at beginning of a table cell
// This will stop at a table, however, since we don't want to
// "drill down" into nested tables.
// aSelection is optional -- if null, we get current seletion
nsresult CollapseSelectionToDeepestNonTableFirstChild(nsISelection *aSelection, nsIDOMNode *aNode);
virtual PRBool IsTextInDirtyFrameVisible(nsIDOMNode *aNode);
nsresult IsVisTextNode( nsIDOMNode *aNode,
PRBool *outIsEmptyNode,
PRBool aSafeToAskFrames);
nsresult IsEmptyNode(nsIDOMNode *aNode, PRBool *outIsEmptyBlock,
PRBool aMozBRDoesntCount = PR_FALSE,
PRBool aListOrCellNotEmpty = PR_FALSE,
PRBool aSafeToAskFrames = PR_FALSE);
nsresult IsEmptyNodeImpl(nsIDOMNode *aNode,
PRBool *outIsEmptyBlock,
PRBool aMozBRDoesntCount,
PRBool aListOrCellNotEmpty,
PRBool aSafeToAskFrames,
PRBool *aSeenBR);
// Stylesheet-related methods that aren't part of nsIEditorStyleSheets.
nsresult AddCSSStyleSheet(nsICSSStyleSheet* aSheet);
nsresult GetCSSLoader(const nsAString& aURL, nsICSSLoader** aCSSLoader);
// Returns TRUE if sheet was loaded, false if it wasn't
PRBool EnableExistingStyleSheet(const nsAString& aURL);
// Dealing with the internal style sheet lists:
NS_IMETHOD GetStyleSheetForURL(const nsAString &aURL,
nsICSSStyleSheet **_retval);
NS_IMETHOD GetURLForStyleSheet(nsICSSStyleSheet *aStyleSheet, nsAString &aURL);
// Add a url + known style sheet to the internal lists:
nsresult AddNewStyleSheetToList(const nsAString &aURL,
nsICSSStyleSheet *aStyleSheet);
nsresult RemoveStyleSheetFromList(const nsAString &aURL);
protected:
NS_IMETHOD InitRules();
/** install the event listeners for the editor
* used to be part of Init, but now broken out into a separate method
* called by PostCreate, giving the caller the chance to interpose
* their own listeners before we install our own backstops.
*/
NS_IMETHOD InstallEventListeners();
/** returns the layout object (nsIFrame in the real world) for aNode
* @param aNode the content to get a frame for
* @param aLayoutObject the "primary frame" for aNode, if one exists. May be null
* @return NS_OK whether a frame is found or not
* an error if some serious error occurs
*/
NS_IMETHOD GetLayoutObject(nsIDOMNode *aInNode, nsISupports **aOutLayoutObject);
// Return TRUE if aElement is a table-related elemet and caret was set
PRBool SetCaretInTableCell(nsIDOMElement* aElement);
PRBool IsElementInBody(nsIDOMElement* aElement);
// inline style caching
void ClearInlineStylesCache();
// key event helpers
NS_IMETHOD TabInTable(PRBool inIsShift, PRBool *outHandled);
NS_IMETHOD CreateBR(nsIDOMNode *aNode, PRInt32 aOffset,
nsCOMPtr<nsIDOMNode> *outBRNode, nsIEditor::EDirection aSelect = nsIEditor::eNone);
NS_IMETHOD CreateBRImpl(nsCOMPtr<nsIDOMNode> *aInOutParent,
PRInt32 *aInOutOffset,
nsCOMPtr<nsIDOMNode> *outBRNode,
nsIEditor::EDirection aSelect);
NS_IMETHOD InsertBR(nsCOMPtr<nsIDOMNode> *outBRNode);
// Table Editing (implemented in nsTableEditor.cpp)
// Table utilities
// Insert a new cell after or before supplied aCell.
// Optional: If aNewCell supplied, returns the newly-created cell (addref'd, of course)
// This doesn't change or use the current selection
NS_IMETHOD InsertCell(nsIDOMElement *aCell, PRInt32 aRowSpan, PRInt32 aColSpan,
PRBool aAfter, PRBool aIsHeader, nsIDOMElement **aNewCell);
// Helpers that don't touch the selection or do batch transactions
NS_IMETHOD DeleteRow(nsIDOMElement *aTable, PRInt32 aRowIndex);
NS_IMETHOD DeleteColumn(nsIDOMElement *aTable, PRInt32 aColIndex);
NS_IMETHOD DeleteCellContents(nsIDOMElement *aCell);
// Move all contents from aCellToMerge into aTargetCell (append at end)
NS_IMETHOD MergeCells(nsCOMPtr<nsIDOMElement> aTargetCell, nsCOMPtr<nsIDOMElement> aCellToMerge, PRBool aDeleteCellToMerge);
NS_IMETHOD DeleteTable2(nsIDOMElement *aTable, nsISelection *aSelection);
NS_IMETHOD SetColSpan(nsIDOMElement *aCell, PRInt32 aColSpan);
NS_IMETHOD SetRowSpan(nsIDOMElement *aCell, PRInt32 aRowSpan);
// Helper used to get nsITableLayout interface for methods implemented in nsTableFrame
NS_IMETHOD GetTableLayoutObject(nsIDOMElement* aTable, nsITableLayout **tableLayoutObject);
// Needed to do appropriate deleting when last cell or row is about to be deleted
// This doesn't count cells that don't start in the given row (are spanning from row above)
PRInt32 GetNumberOfCellsInRow(nsIDOMElement* aTable, PRInt32 rowIndex);
// Test if all cells in row or column at given index are selected
PRBool AllCellsInRowSelected(nsIDOMElement *aTable, PRInt32 aRowIndex, PRInt32 aNumberOfColumns);
PRBool AllCellsInColumnSelected(nsIDOMElement *aTable, PRInt32 aColIndex, PRInt32 aNumberOfRows);
PRBool IsEmptyCell(nsIDOMElement *aCell);
// Most insert methods need to get the same basic context data
// Any of the pointers may be null if you don't need that datum (for more efficiency)
// Input: *aCell is a known cell,
// if null, cell is obtained from the anchor node of the selection
// Returns NS_EDITOR_ELEMENT_NOT_FOUND if cell is not found even if aCell is null
NS_IMETHOD GetCellContext(nsISelection **aSelection,
nsIDOMElement **aTable,
nsIDOMElement **aCell,
nsIDOMNode **aCellParent, PRInt32 *aCellOffset,
PRInt32 *aRowIndex, PRInt32 *aColIndex);
NS_IMETHOD GetCellSpansAt(nsIDOMElement* aTable, PRInt32 aRowIndex, PRInt32 aColIndex,
PRInt32& aActualRowSpan, PRInt32& aActualColSpan);
NS_IMETHOD SplitCellIntoColumns(nsIDOMElement *aTable, PRInt32 aRowIndex, PRInt32 aColIndex,
PRInt32 aColSpanLeft, PRInt32 aColSpanRight, nsIDOMElement **aNewCell);
NS_IMETHOD SplitCellIntoRows(nsIDOMElement *aTable, PRInt32 aRowIndex, PRInt32 aColIndex,
PRInt32 aRowSpanAbove, PRInt32 aRowSpanBelow, nsIDOMElement **aNewCell);
nsresult CopyCellBackgroundColor(nsIDOMElement *destCell, nsIDOMElement *sourceCell);
// Reduce rowspan/colspan when cells span into non-existent rows/columns
NS_IMETHOD FixBadRowSpan(nsIDOMElement *aTable, PRInt32 aRowIndex, PRInt32& aNewRowCount);
NS_IMETHOD FixBadColSpan(nsIDOMElement *aTable, PRInt32 aColIndex, PRInt32& aNewColCount);
// Fallback method: Call this after using ClearSelection() and you
// failed to set selection to some other content in the document
NS_IMETHOD SetSelectionAtDocumentStart(nsISelection *aSelection);
// End of Table Editing utilities
NS_IMETHOD IsRootTag(nsString &aTag, PRBool &aIsTag);
NS_IMETHOD IsSubordinateBlock(nsString &aTag, PRBool &aIsTag);
virtual PRBool IsBlockNode(nsIDOMNode *aNode);
static nsCOMPtr<nsIDOMNode> GetEnclosingTable(nsIDOMNode *aNode);
/** content-based query returns PR_TRUE if <aProperty aAttribute=aValue> effects aNode
* If <aProperty aAttribute=aValue> contains aNode,
* but <aProperty aAttribute=SomeOtherValue> also contains aNode and the second is
* more deeply nested than the first, then the first does not effect aNode.
*
* @param aNode The target of the query
* @param aProperty The property that we are querying for
* @param aAttribute The attribute of aProperty, example: color in <FONT color="blue">
* May be null.
* @param aValue The value of aAttribute, example: blue in <FONT color="blue">
* May be null. Ignored if aAttribute is null.
* @param aIsSet [OUT] PR_TRUE if <aProperty aAttribute=aValue> effects aNode.
* @param aStyleNode [OUT] set to the node representing <aProperty aAttribute=aValue>, if found.
* null if aIsSet is returned as PR_FALSE;
*/
virtual void IsTextPropertySetByContent(nsIDOMNode *aNode,
nsIAtom *aProperty,
const nsAString *aAttribute,
const nsAString *aValue,
PRBool &aIsSet,
nsIDOMNode **aStyleNode,
nsAString *outValue = nsnull);
void ResetTextSelectionForRange(nsIDOMNode *aParent,
PRInt32 aStartOffset,
PRInt32 aEndOffset,
nsISelection *aSelection);
// Methods for handling plaintext quotations
NS_IMETHOD PasteAsPlaintextQuotation(PRInt32 aSelectionType);
/** Insert a string as quoted text,
* replacing the selected text (if any).
* @param aQuotedText The string to insert.
* @param aAddCites Whether to prepend extra ">" to each line
* (usually true, unless those characters
* have already been added.)
* @return aNodeInserted The node spanning the insertion, if applicable.
* If aAddCites is false, this will be null.
*/
NS_IMETHOD InsertAsPlaintextQuotation(const nsAString & aQuotedText,
PRBool aAddCites,
nsIDOMNode **aNodeInserted);
// factored methods for handling insertion of data from transferables (drag&drop or clipboard)
NS_IMETHOD PrepareTransferable(nsITransferable **transferable);
NS_IMETHOD PrepareHTMLTransferable(nsITransferable **transferable, PRBool havePrivFlavor);
nsresult PutDragDataInTransferable(nsITransferable **aTransferable);
NS_IMETHOD InsertFromTransferable(nsITransferable *transferable,
nsIDOMDocument *aSourceDoc,
const nsAString & aContextStr,
const nsAString & aInfoStr,
nsIDOMNode *aDestinationNode,
PRInt32 aDestinationOffset,
PRBool aDoDeleteSelection);
PRBool HavePrivateHTMLFlavor( nsIClipboard *clipboard );
nsresult ParseCFHTML(nsCString & aCfhtml, PRUnichar **aStuffToPaste, PRUnichar **aCfcontext);
nsresult DoContentFilterCallback(const nsAString &aFlavor,
nsIDOMDocument *aSourceDoc,
PRBool aWillDeleteSelection,
nsIDOMNode **aFragmentAsNode,
nsIDOMNode **aFragStartNode,
PRInt32 *aFragStartOffset,
nsIDOMNode **aFragEndNode,
PRInt32 *aFragEndOffset,
nsIDOMNode **aTargetNode,
PRInt32 *aTargetOffset,
PRBool *aDoContinue);
PRBool IsInLink(nsIDOMNode *aNode, nsCOMPtr<nsIDOMNode> *outLink = nsnull);
nsresult StripFormattingNodes(nsIDOMNode *aNode, PRBool aOnlyList = PR_FALSE);
nsresult CreateDOMFragmentFromPaste(const nsAString & aInputString,
const nsAString & aContextStr,
const nsAString & aInfoStr,
nsCOMPtr<nsIDOMNode> *outFragNode,
PRInt32 *outRangeStartHint,
PRInt32 *outRangeEndHint);
nsresult ParseFragment(const nsAString & aStr, nsVoidArray &aTagStack,
nsIDocument* aTargetDoc,
nsCOMPtr<nsIDOMNode> *outNode);
nsresult CreateListOfNodesToPaste(nsIDOMNode *aFragmentAsNode,
nsCOMArray<nsIDOMNode>& outNodeList,
nsIDOMNode *aStartNode,
PRInt32 aStartOffset,
nsIDOMNode *aEndNode,
PRInt32 aEndOffset);
nsresult CreateTagStack(nsVoidArray &aTagStack, nsIDOMNode *aNode);
void FreeTagStackStrings(nsVoidArray &tagStack);
nsresult GetListAndTableParents( PRBool aEnd,
nsCOMArray<nsIDOMNode>& aListOfNodes,
nsCOMArray<nsIDOMNode>& outArray);
nsresult DiscoverPartialListsAndTables(nsCOMArray<nsIDOMNode>& aPasteNodes,
nsCOMArray<nsIDOMNode>& aListsAndTables,
PRInt32 *outHighWaterMark);
nsresult ScanForListAndTableStructure(PRBool aEnd,
nsCOMArray<nsIDOMNode>& aNodes,
nsIDOMNode *aListOrTable,
nsCOMPtr<nsIDOMNode> *outReplaceNode);
nsresult ReplaceOrphanedStructure( PRBool aEnd,
nsCOMArray<nsIDOMNode>& aNodeArray,
nsCOMArray<nsIDOMNode>& aListAndTableArray,
PRInt32 aHighWaterMark);
nsIDOMNode* GetArrayEndpoint(PRBool aEnd, nsCOMArray<nsIDOMNode>& aNodeArray);
/** simple utility to handle any error with event listener allocation or registration */
void HandleEventListenerError();
/* small utility routine to test if a break node is visible to user */
PRBool IsVisBreak(nsIDOMNode *aNode);
/* utility routine to possibly adjust the insertion position when
inserting a block level element */
void NormalizeEOLInsertPosition(nsIDOMNode *firstNodeToInsert,
nsCOMPtr<nsIDOMNode> *insertParentNode,
PRInt32 *insertOffset);
/* small utility routine to test the eEditorReadonly bit */
PRBool IsModifiable();
/* helpers for block transformations */
nsresult MakeDefinitionItem(const nsAString & aItemType);
nsresult InsertBasicBlock(const nsAString & aBlockType);
/* increase/decrease the font size of selection */
nsresult RelativeFontChange( PRInt32 aSizeChange);
/* helper routines for font size changing */
nsresult RelativeFontChangeOnTextNode( PRInt32 aSizeChange,
nsIDOMCharacterData *aTextNode,
PRInt32 aStartOffset,
PRInt32 aEndOffset);
nsresult RelativeFontChangeOnNode( PRInt32 aSizeChange,
nsIDOMNode *aNode);
nsresult RelativeFontChangeHelper( PRInt32 aSizeChange,
nsIDOMNode *aNode);
/* helper routines for inline style */
nsresult SetInlinePropertyOnTextNode( nsIDOMCharacterData *aTextNode,
PRInt32 aStartOffset,
PRInt32 aEndOffset,
nsIAtom *aProperty,
const nsAString *aAttribute,
const nsAString *aValue);
nsresult SetInlinePropertyOnNode( nsIDOMNode *aNode,
nsIAtom *aProperty,
const nsAString *aAttribute,
const nsAString *aValue);
nsresult PromoteInlineRange(nsIDOMRange *inRange);
nsresult PromoteRangeIfStartsOrEndsInNamedAnchor(nsIDOMRange *inRange);
nsresult SplitStyleAboveRange(nsIDOMRange *aRange,
nsIAtom *aProperty,
const nsAString *aAttribute);
nsresult SplitStyleAbovePoint(nsCOMPtr<nsIDOMNode> *aNode,
PRInt32 *aOffset,
nsIAtom *aProperty,
const nsAString *aAttribute,
nsCOMPtr<nsIDOMNode> *outLeftNode = nsnull,
nsCOMPtr<nsIDOMNode> *outRightNode = nsnull);
nsresult ApplyDefaultProperties();
nsresult RemoveStyleInside(nsIDOMNode *aNode,
nsIAtom *aProperty,
const nsAString *aAttribute,
PRBool aChildrenOnly = PR_FALSE);
nsresult RemoveInlinePropertyImpl(nsIAtom *aProperty, const nsAString *aAttribute);
PRBool NodeIsProperty(nsIDOMNode *aNode);
PRBool HasAttr(nsIDOMNode *aNode, const nsAString *aAttribute);
PRBool HasAttrVal(nsIDOMNode *aNode, const nsAString *aAttribute, const nsAString *aValue);
PRBool IsAtFrontOfNode(nsIDOMNode *aNode, PRInt32 aOffset);
PRBool IsAtEndOfNode(nsIDOMNode *aNode, PRInt32 aOffset);
PRBool IsOnlyAttribute(nsIDOMNode *aElement, const nsAString *aAttribute);
nsresult RemoveBlockContainer(nsIDOMNode *inNode);
nsresult GetPriorHTMLSibling(nsIDOMNode *inNode, nsCOMPtr<nsIDOMNode> *outNode);
nsresult GetPriorHTMLSibling(nsIDOMNode *inParent, PRInt32 inOffset, nsCOMPtr<nsIDOMNode> *outNode);
nsresult GetNextHTMLSibling(nsIDOMNode *inNode, nsCOMPtr<nsIDOMNode> *outNode);
nsresult GetNextHTMLSibling(nsIDOMNode *inParent, PRInt32 inOffset, nsCOMPtr<nsIDOMNode> *outNode);
nsresult GetPriorHTMLNode(nsIDOMNode *inNode, nsCOMPtr<nsIDOMNode> *outNode, PRBool bNoBlockCrossing = PR_FALSE);
nsresult GetPriorHTMLNode(nsIDOMNode *inParent, PRInt32 inOffset, nsCOMPtr<nsIDOMNode> *outNode, PRBool bNoBlockCrossing = PR_FALSE);
nsresult GetNextHTMLNode(nsIDOMNode *inNode, nsCOMPtr<nsIDOMNode> *outNode, PRBool bNoBlockCrossing = PR_FALSE);
nsresult GetNextHTMLNode(nsIDOMNode *inParent, PRInt32 inOffset, nsCOMPtr<nsIDOMNode> *outNode, PRBool bNoBlockCrossing = PR_FALSE);
nsresult IsFirstEditableChild( nsIDOMNode *aNode, PRBool *aOutIsFirst);
nsresult IsLastEditableChild( nsIDOMNode *aNode, PRBool *aOutIsLast);
nsresult GetFirstEditableChild( nsIDOMNode *aNode, nsCOMPtr<nsIDOMNode> *aOutFirstChild);
nsresult GetLastEditableChild( nsIDOMNode *aNode, nsCOMPtr<nsIDOMNode> *aOutLastChild);
nsresult GetFirstEditableLeaf( nsIDOMNode *aNode, nsCOMPtr<nsIDOMNode> *aOutFirstLeaf);
nsresult GetLastEditableLeaf( nsIDOMNode *aNode, nsCOMPtr<nsIDOMNode> *aOutLastLeaf);
nsresult GetDOMEventReceiver(nsIDOMEventReceiver **aEventReceiver);
//XXX Kludge: Used to suppress spurious drag/drop events (bug 50703)
PRBool mIgnoreSpuriousDragEvent;
nsresult GetInlinePropertyBase(nsIAtom *aProperty,
const nsAString *aAttribute,
const nsAString *aValue,
PRBool *aFirst,
PRBool *aAny,
PRBool *aAll,
nsAString *outValue,
PRBool aCheckDefaults = PR_TRUE);
nsresult HasStyleOrIdOrClass(nsIDOMElement * aElement, PRBool *aHasStyleOrIdOrClass);
nsresult RemoveElementIfNoStyleOrIdOrClass(nsIDOMElement * aElement, nsIAtom * aTag);
// Data members
protected:
nsCOMArray<nsIContentFilter> mContentFilters;
TypeInState* mTypeInState;
nsCOMPtr<nsIAtom> mBoldAtom;
nsCOMPtr<nsIAtom> mItalicAtom;
nsCOMPtr<nsIAtom> mUnderlineAtom;
nsCOMPtr<nsIAtom> mFontAtom;
nsCOMPtr<nsIAtom> mLinkAtom;
nsCOMPtr<nsIDOMNode> mCachedNode;
PRBool mCachedBoldStyle;
PRBool mCachedItalicStyle;
PRBool mCachedUnderlineStyle;
nsString mCachedFontName;
// Used to disable HTML formatting commands during HTML source editing
PRBool mCanEditHTML;
// Used by GetFirstSelectedCell and GetNextSelectedCell
PRInt32 mSelectedCellIndex;
nsCOMPtr<nsIRangeUtils> mRangeHelper;
nsString mLastStyleSheetURL;
nsString mLastOverrideStyleSheetURL;
PRBool mCSSAware;
nsHTMLCSSUtils *mHTMLCSSUtils;
// Maintain a list of associated style sheets and their urls.
nsStringArray mStyleSheetURLs;
nsCOMArray<nsICSSStyleSheet> mStyleSheets;
PRInt32 mNumStyleSheets;
// an array for holding default style settings
nsVoidArray mDefaultStyles;
// Maintain a static parser service ...
static nsCOMPtr<nsIParserService> sParserService;
// ... which means that we need an instance count to know when to delete it
static PRInt32 sInstanceCount;
protected:
/* ANONYMOUS UTILS */
void DeleteRefToAnonymousNode(nsIDOMElement* aElement,
nsIContent * aParentContent,
nsIDocumentObserver * aDocObserver);
nsresult GetElementOrigin(nsIDOMElement * aElement, PRInt32 & aX, PRInt32 & aY);
nsresult GetPositionAndDimensions(nsIDOMElement * aElement,
PRInt32 & aX, PRInt32 & aY,
PRInt32 & aW, PRInt32 & aH,
PRInt32 & aBorderLeft,
PRInt32 & aBorderTop,
PRInt32 & aMarginLeft,
PRInt32 & aMarginTop);
/* PACKED BOOLEANS FOR RESIZING, ABSOLUTE POSITIONING AND */
/* INLINE TABLE EDITING */
// resizing
PRPackedBool mIsObjectResizingEnabled;
PRPackedBool mIsResizing;
PRPackedBool mPreserveRatio;
PRPackedBool mResizedObjectIsAnImage;
// absolute positioning
PRPackedBool mIsAbsolutelyPositioningEnabled;
PRPackedBool mResizedObjectIsAbsolutelyPositioned;
PRPackedBool mGrabberClicked;
PRPackedBool mIsMoving;
PRPackedBool mSnapToGridEnabled;
// inline table editing
PRPackedBool mIsInlineTableEditingEnabled;
/* RESIZING */
nsCOMPtr<nsIDOMElement> mTopLeftHandle;
nsCOMPtr<nsIDOMElement> mTopHandle;
nsCOMPtr<nsIDOMElement> mTopRightHandle;
nsCOMPtr<nsIDOMElement> mLeftHandle;
nsCOMPtr<nsIDOMElement> mRightHandle;
nsCOMPtr<nsIDOMElement> mBottomLeftHandle;
nsCOMPtr<nsIDOMElement> mBottomHandle;
nsCOMPtr<nsIDOMElement> mBottomRightHandle;
nsCOMPtr<nsIDOMElement> mActivatedHandle;
nsCOMPtr<nsIDOMElement> mResizingShadow;
nsCOMPtr<nsIDOMElement> mResizingInfo;
nsCOMPtr<nsIDOMElement> mResizedObject;
nsCOMPtr<nsIDOMEventListener> mMouseMotionListenerP;
nsCOMPtr<nsIDOMEventListener> mMutationListenerP;
nsCOMPtr<nsISelectionListener> mSelectionListenerP;
nsCOMPtr<nsIDOMEventListener> mResizeEventListenerP;
nsCOMArray<nsIHTMLObjectResizeListener> objectResizeEventListeners;
PRInt32 mOriginalX;
PRInt32 mOriginalY;
PRInt32 mResizedObjectX;
PRInt32 mResizedObjectY;
PRInt32 mResizedObjectWidth;
PRInt32 mResizedObjectHeight;
PRInt32 mResizedObjectMarginLeft;
PRInt32 mResizedObjectMarginTop;
PRInt32 mResizedObjectBorderLeft;
PRInt32 mResizedObjectBorderTop;
PRInt32 mXIncrementFactor;
PRInt32 mYIncrementFactor;
PRInt32 mWidthIncrementFactor;
PRInt32 mHeightIncrementFactor;
PRInt8 mInfoXIncrement;
PRInt8 mInfoYIncrement;
nsresult SetAllResizersPosition();
nsresult CreateResizer(nsIDOMElement ** aReturn, PRInt16 aLocation, nsIDOMNode * aParentNode);
void SetAnonymousElementPosition(PRInt32 aX, PRInt32 aY, nsIDOMElement *aResizer);
nsresult CreateShadow(nsIDOMElement ** aReturn, nsIDOMNode * aParentNode,
nsIDOMElement * aOriginalObject);
nsresult SetShadowPosition(nsIDOMElement * aShadow,
nsIDOMElement * aOriginalObject,
PRInt32 aOriginalObjectX,
PRInt32 aOriginalObjectY);
nsresult CreateResizingInfo(nsIDOMElement ** aReturn, nsIDOMNode * aParentNode);
nsresult SetResizingInfoPosition(PRInt32 aX, PRInt32 aY,
PRInt32 aW, PRInt32 aH);
PRInt32 GetNewResizingIncrement(PRInt32 aX, PRInt32 aY, PRInt32 aID);
nsresult StartResizing(nsIDOMElement * aHandle);
PRInt32 GetNewResizingX(PRInt32 aX, PRInt32 aY);
PRInt32 GetNewResizingY(PRInt32 aX, PRInt32 aY);
PRInt32 GetNewResizingWidth(PRInt32 aX, PRInt32 aY);
PRInt32 GetNewResizingHeight(PRInt32 aX, PRInt32 aY);
void HideShadowAndInfo();
void SetFinalSize(PRInt32 aX, PRInt32 aY);
void DeleteRefToAnonymousNode(nsIDOMNode * aNode);
void SetResizeIncrements(PRInt32 aX, PRInt32 aY, PRInt32 aW, PRInt32 aH, PRBool aPreserveRatio);
void SetInfoIncrements(PRInt8 aX, PRInt8 aY);
/* ABSOLUTE POSITIONING */
PRInt32 mPositionedObjectX;
PRInt32 mPositionedObjectY;
PRInt32 mPositionedObjectWidth;
PRInt32 mPositionedObjectHeight;
PRInt32 mPositionedObjectMarginLeft;
PRInt32 mPositionedObjectMarginTop;
PRInt32 mPositionedObjectBorderLeft;
PRInt32 mPositionedObjectBorderTop;
nsCOMPtr<nsIDOMElement> mAbsolutelyPositionedObject;
nsCOMPtr<nsIDOMElement> mGrabber;
nsCOMPtr<nsIDOMElement> mPositioningShadow;
PRInt32 mGridSize;
nsresult CreateGrabber(nsIDOMNode * aParentNode, nsIDOMElement ** aReturn);
nsresult StartMoving(nsIDOMElement * aHandle);
nsresult SetFinalPosition(PRInt32 aX, PRInt32 aY);
void AddPositioningOffet(PRInt32 & aX, PRInt32 & aY);
void SnapToGrid(PRInt32 & newX, PRInt32 & newY);
nsresult GrabberClicked();
nsresult EndMoving();
nsresult CheckPositionedElementBGandFG(nsIDOMElement * aElement,
nsAString & aReturn);
/* INLINE TABLE EDITING */
nsCOMPtr<nsIDOMElement> mInlineEditedCell;
nsCOMPtr<nsIDOMElement> mAddColumnBeforeButton;
nsCOMPtr<nsIDOMElement> mRemoveColumnButton;
nsCOMPtr<nsIDOMElement> mAddColumnAfterButton;
nsCOMPtr<nsIDOMElement> mAddRowBeforeButton;
nsCOMPtr<nsIDOMElement> mRemoveRowButton;
nsCOMPtr<nsIDOMElement> mAddRowAfterButton;
void AddMouseClickListener(nsIDOMElement * aElement);
void RemoveMouseClickListener(nsIDOMElement * aElement);
public:
// friends
friend class nsHTMLEditRules;
friend class nsTextEditRules;
friend class nsWSRunObject;
};
#endif //nsHTMLEditor_h__
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