mirror of
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529 lines
20 KiB
C++
529 lines
20 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsCellMap_h__
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#define nsCellMap_h__
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#include "nscore.h"
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#include "celldata.h"
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#include "nsVoidArray.h"
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#include "nsRect.h"
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#undef DEBUG_TABLE_CELLMAP
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class nsTableColFrame;
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class nsTableCellFrame;
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class nsTableRowGroupFrame;
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class nsTableFrame;
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class nsCellMap;
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struct nsColInfo
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{
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PRInt32 mNumCellsOrig; // number of cells originating in the col
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PRInt32 mNumCellsSpan; // number of cells spanning into the col via colspans (not rowspans)
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// for simplicity, a colspan=0 cell is only counted as spanning the
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// 1st col to the right of where it orginates
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nsColInfo();
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nsColInfo(PRInt32 aNumCellsOrig,
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PRInt32 aNumCellsSpan);
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};
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enum Corner
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{
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eTopLeft = 0,
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eTopRight = 1,
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eBottomRight = 2,
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eBottomLeft = 3
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};
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struct BCInfo
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{
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nsVoidArray mRightBorders;
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nsVoidArray mBottomBorders;
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BCData mLowerRightCorner;
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};
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class nsTableCellMap
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{
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public:
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nsTableCellMap(nsTableFrame& aTableFrame,
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PRBool aBorderCollapse);
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/** destructor
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* NOT VIRTUAL BECAUSE THIS CLASS SHOULD **NEVER** BE SUBCLASSED
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*/
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~nsTableCellMap();
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void RemoveGroupCellMap(nsTableRowGroupFrame* aRowGroup);
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void InsertGroupCellMap(nsTableRowGroupFrame& aNewRowGroup,
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nsTableRowGroupFrame*& aPrevRowGroup);
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nsCellMap* GetMapFor(nsTableRowGroupFrame& aRowGroup);
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/** synchronize the cellmaps with the rowgroups again **/
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void Synchronize(nsTableFrame* aTableFrame);
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nsTableCellFrame* GetCellFrame(PRInt32 aRowIndex,
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PRInt32 aColIndex,
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CellData& aData,
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PRBool aUseRowIfOverlap) const;
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/** return the CellData for the cell at (aTableRowIndex, aTableColIndex) */
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CellData* GetDataAt(PRInt32 aRowIndex,
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PRInt32 aColIndex,
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PRBool aUpdateZeroSpan = PR_TRUE);
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nsColInfo* GetColInfoAt(PRInt32 aColIndex);
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/** append the cellFrame at the end of the row at aRowIndex and return the col index
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*/
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CellData* AppendCell(nsTableCellFrame& aCellFrame,
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PRInt32 aRowIndex,
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PRBool aRebuildIfNecessary,
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nsRect& aDamageArea);
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void InsertCells(nsVoidArray& aCellFrames,
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PRInt32 aRowIndex,
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PRInt32 aColIndexBefore,
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nsRect& aDamageArea);
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void RemoveCell(nsTableCellFrame* aCellFrame,
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PRInt32 aRowIndex,
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nsRect& aDamageArea);
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/** Remove the previously gathered column information */
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void ClearCols();
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void InsertRows(nsTableRowGroupFrame& aRowGroup,
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nsVoidArray& aRows,
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PRInt32 aFirstRowIndex,
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PRBool aConsiderSpans,
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nsRect& aDamageArea);
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void RemoveRows(PRInt32 aFirstRowIndex,
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PRInt32 aNumRowsToRemove,
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PRBool aConsiderSpans,
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nsRect& aDamageArea);
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PRInt32 GetNumCellsOriginatingInRow(PRInt32 aRowIndex);
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PRInt32 GetNumCellsOriginatingInCol(PRInt32 aColIndex) const;
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/** indicate whether the row has more than one cell that either originates
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* or is spanned from the rows above
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*/
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PRBool HasMoreThanOneCell(PRInt32 aRowIndex);
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PRInt32 GetEffectiveRowSpan(PRInt32 aRowIndex,
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PRInt32 aColIndex);
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PRInt32 GetEffectiveColSpan(PRInt32 aRowIndex,
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PRInt32 aColIndex);
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/** return the total number of columns in the table represented by this CellMap */
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PRInt32 GetColCount() const;
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/** return the actual number of rows in the table represented by this CellMap */
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PRInt32 GetRowCount() const;
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nsTableCellFrame* GetCellInfoAt(PRInt32 aRowX,
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PRInt32 aColX,
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PRBool* aOriginates = nsnull,
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PRInt32* aColSpan = nsnull);
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void AddColsAtEnd(PRUint32 aNumCols);
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void RemoveColsAtEnd();
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PRBool RowIsSpannedInto(PRInt32 aRowIndex);
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PRBool RowHasSpanningCells(PRInt32 aRowIndex);
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void RebuildConsideringCells(nsCellMap* aCellMap,
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nsVoidArray* aCellFrames,
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PRInt32 aRowIndex,
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PRInt32 aColIndex,
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PRBool aInsert,
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nsRect& aDamageArea);
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void RebuildConsideringRows(nsCellMap* aCellMap,
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PRInt32 aStartRowIndex,
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nsVoidArray* aRowsToInsert,
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PRBool aNumRowsToRemove,
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nsRect& aDamageArea);
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PRBool ColIsSpannedInto(PRInt32 aColIndex);
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PRBool ColHasSpanningCells(PRInt32 aColIndex);
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BCData* GetBCData(PRUint8 aSide,
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nsCellMap& aCellMap,
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PRUint32 aYPos,
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PRUint32 aXPos,
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PRBool aIsLowerRight = PR_FALSE);
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void SetBCBorderEdge(PRUint8 aEdge,
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nsCellMap& aCellMap,
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PRUint32 aCellMapStart,
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PRUint32 aYPos,
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PRUint32 aXPos,
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PRUint32 aLength,
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BCBorderOwner aOwner,
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nscoord aSize,
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PRBool aChanged);
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void SetBCBorderCorner(Corner aCorner,
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nsCellMap& aCellMap,
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PRUint32 aCellMapStart,
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PRUint32 aYPos,
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PRUint32 aXPos,
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PRUint8 aOwner,
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nscoord aSubSize,
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PRBool aBevel,
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PRBool aIsBottomRight = PR_FALSE);
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/** dump a representation of the cell map to stdout for debugging */
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#ifdef NS_DEBUG
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void Dump(char* aString = nsnull) const;
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#endif
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protected:
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BCData* GetRightMostBorder(PRInt32 aRowIndex);
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BCData* GetBottomMostBorder(PRInt32 aColIndex);
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friend class nsCellMap;
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friend class BCMapCellIterator;
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friend class BCMapBorderIterator;
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/** Insert a row group cellmap after aPrevMap, if aPrefMap is null insert it
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* at the beginning, the ordering of the cellmap corresponds to the ordering of
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* rowgroups once OrderRowGroups has been called
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*/
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void InsertGroupCellMap(nsCellMap* aPrevMap,
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nsCellMap& aNewMap);
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void DeleteRightBottomBorders();
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nsTableFrame& mTableFrame;
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nsAutoVoidArray mCols;
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nsCellMap* mFirstMap;
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// border collapsing info
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BCInfo* mBCInfo;
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};
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/** nsCellMap is a support class for nsTablePart.
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* It maintains an Rows x Columns grid onto which the cells of the table are mapped.
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* This makes processing of rowspan and colspan attributes much easier.
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* Each cell is represented by a CellData object.
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*
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* @see CellData
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* @see nsTableFrame::AddCellToMap
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* @see nsTableFrame::GrowCellMap
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* @see nsTableFrame::BuildCellIntoMap
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*
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* mRows is an array of rows. a row cannot be null.
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* each row is an array of cells. a cell can be null.
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*/
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class nsCellMap
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{
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public:
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/** constructor
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* @param aNumRows - initial number of rows
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* @param aNumColumns - initial number of columns
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*/
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nsCellMap(nsTableRowGroupFrame& aRowGroupFrame);
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/** destructor
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* NOT VIRTUAL BECAUSE THIS CLASS SHOULD **NEVER** BE SUBCLASSED
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*/
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~nsCellMap();
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nsCellMap* GetNextSibling() const;
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void SetNextSibling(nsCellMap* aSibling);
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nsTableRowGroupFrame* GetRowGroup() const;
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nsTableCellFrame* GetCellFrame(PRInt32 aRowIndex,
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PRInt32 aColIndex,
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CellData& aData,
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PRBool aUseRowSpanIfOverlap) const;
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/** append the cellFrame at an empty or dead cell or finally at the end of
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* the row at aRowIndex and return a pointer to the celldata entry in the
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* cellmap
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*
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* @param aMap - reference to the table cell map
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* @param aCellFrame - a pointer to the cellframe which will be appended
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* to the row
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* @param aRowIndex - to this row the celldata entry will be added
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* @param aRebuildIfNecessay - if a cell spans into a row below it might be
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* necesserary to rebuild the cellmap as this rowspan
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* might overlap another cell.
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* @param aDamageArea - area in cellmap coordinates which have been updated.
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* @param aColToBeginSearch - if not null contains the column number where
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* the search for a empty or dead cell in the
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* row should start
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* @return - a pointer to the celldata entry inserted into
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* the cellmap
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*/
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CellData* AppendCell(nsTableCellMap& aMap,
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nsTableCellFrame* aCellFrame,
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PRInt32 aRowIndex,
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PRBool aRebuildIfNecessary,
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nsRect& aDamageArea,
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PRInt32* aBeginSearchAtCol = nsnull);
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void InsertCells(nsTableCellMap& aMap,
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nsVoidArray& aCellFrames,
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PRInt32 aRowIndex,
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PRInt32 aColIndexBefore,
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nsRect& aDamageArea);
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void RemoveCell(nsTableCellMap& aMap,
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nsTableCellFrame* aCellFrame,
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PRInt32 aRowIndex,
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nsRect& aDamageArea);
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void InsertRows(nsTableCellMap& aMap,
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nsVoidArray& aRows,
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PRInt32 aFirstRowIndex,
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PRBool aConsiderSpans,
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nsRect& aDamageArea);
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void RemoveRows(nsTableCellMap& aMap,
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PRInt32 aFirstRowIndex,
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PRInt32 aNumRowsToRemove,
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PRBool aConsiderSpans,
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nsRect& aDamageArea);
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PRInt32 GetNumCellsOriginatingInRow(PRInt32 aRowIndex) const;
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PRInt32 GetNumCellsOriginatingInCol(PRInt32 aColIndex) const;
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/** return the number of rows in the table represented by this CellMap */
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PRInt32 GetRowCount(PRBool aConsiderDeadRowSpanRows = PR_FALSE) const;
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nsTableCellFrame* GetCellInfoAt(nsTableCellMap& aMap,
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PRInt32 aRowX,
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PRInt32 aColX,
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PRBool* aOriginates = nsnull,
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PRInt32* aColSpan = nsnull);
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PRBool RowIsSpannedInto(nsTableCellMap& aMap,
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PRInt32 aRowIndex);
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PRBool RowHasSpanningCells(nsTableCellMap& aMap,
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PRInt32 aRowIndex);
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PRBool ColHasSpanningCells(nsTableCellMap& aMap,
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PRInt32 aColIndex);
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/** indicate whether the row has more than one cell that either originates
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* or is spanned from the rows above
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*/
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PRBool HasMoreThanOneCell(nsTableCellMap& aMap,
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PRInt32 aRowIndex);
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PRInt32 GetRowSpan(nsTableCellMap& aMap,
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PRInt32 aRowIndex,
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PRInt32 aColIndex,
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PRBool aGetEffective,
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PRBool& aIsZeroRowSpan);
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PRInt32 GetEffectiveColSpan(nsTableCellMap& aMap,
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PRInt32 aRowIndex,
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PRInt32 aColIndex,
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PRBool& aIsZeroColSpan);
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/** dump a representation of the cell map to stdout for debugging */
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#ifdef NS_DEBUG
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void Dump(PRBool aIsBorderCollapse) const;
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#endif
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protected:
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friend class nsTableCellMap;
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friend class BCMapCellIterator;
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friend class BCMapBorderIterator;
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friend class nsTableFrame;
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PRBool Grow(nsTableCellMap& aMap,
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PRInt32 aNumRows,
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PRInt32 aRowIndex = -1);
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void GrowRow(nsVoidArray& aRow,
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PRInt32 aNumCols);
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/** assign aCellData to the cell at (aRow,aColumn) */
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void SetDataAt(nsTableCellMap& aMap,
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CellData& aCellData,
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PRInt32 aMapRowIndex,
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PRInt32 aColIndex,
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PRBool aCountZeroSpanAsSpan);
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CellData* GetDataAt(nsTableCellMap& aMap,
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PRInt32 aMapRowIndex,
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PRInt32 aColIndex,
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PRBool aUpdateZeroSpan);
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PRInt32 GetNumCellsIn(PRInt32 aColIndex) const;
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void ExpandWithRows(nsTableCellMap& aMap,
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nsVoidArray& aRowFrames,
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PRInt32 aStartRowIndex,
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nsRect& aDamageArea);
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void ExpandWithCells(nsTableCellMap& aMap,
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nsVoidArray& aCellFrames,
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PRInt32 aRowIndex,
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PRInt32 aColIndex,
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PRInt32 aRowSpan,
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PRBool aRowSpanIsZero,
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nsRect& aDamageArea);
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void ShrinkWithoutRows(nsTableCellMap& aMap,
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PRInt32 aFirstRowIndex,
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PRInt32 aNumRowsToRemove,
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nsRect& aDamageArea);
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void ShrinkWithoutCell(nsTableCellMap& aMap,
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nsTableCellFrame& aCellFrame,
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PRInt32 aRowIndex,
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PRInt32 aColIndex,
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nsRect& aDamageArea);
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void RebuildConsideringRows(nsTableCellMap& aMap,
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PRInt32 aStartRowIndex,
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nsVoidArray* aRowsToInsert,
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PRInt32 aNumRowsToRemove,
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nsRect& aDamageArea);
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void RebuildConsideringCells(nsTableCellMap& aMap,
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PRInt32 aNumOrigCols,
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nsVoidArray* aCellFrames,
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PRInt32 aRowIndex,
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PRInt32 aColIndex,
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PRBool aInsert,
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nsRect& aDamageArea);
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PRBool CellsSpanOut(nsVoidArray& aNewRows);
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/** If a cell spans out of the area defined by aStartRowIndex, aEndRowIndex
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* and aStartColIndex, aEndColIndex the cellmap changes are more severe so
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* the corresponding routines needs to be called. This is also necessary if
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* cells outside spans into this region.
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* @param aMap - the whole table cellmap
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* @aStartRowIndex - y start index
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* @aEndRowIndex - y end index
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* @param aStartColIndex - x start index
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* @param aEndColIndex - x end index
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* @return - true if a cell span crosses the border of the
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region
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*/
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PRBool CellsSpanInOrOut(nsTableCellMap& aMap,
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PRInt32 aStartRowIndex,
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PRInt32 aEndRowIndex,
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PRInt32 aStartColIndex,
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PRInt32 aEndColIndex);
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void ExpandForZeroSpan(nsTableCellFrame* aCellFrame,
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PRInt32 aNumColsInTable);
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PRBool CreateEmptyRow(PRInt32 aRowIndex,
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PRInt32 aNumCols);
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PRInt32 GetRowSpanForNewCell(nsTableCellFrame& aCellFrameToAdd,
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PRInt32 aRowIndex,
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PRBool& aIsZeroRowSpan);
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PRInt32 GetColSpanForNewCell(nsTableCellFrame& aCellFrameToAdd,
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PRInt32 aColIndex,
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PRInt32 aNumColsInTable,
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PRBool& aIsZeroColSpan);
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void AdjustForZeroSpan(nsTableCellMap& aMap,
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PRInt32 aRowIndex,
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PRInt32 aColIndex);
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PRBool IsZeroColSpan(PRInt32 aRowIndex,
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PRInt32 aColIndex) const;
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/** an array containing col array. It can be larger than mRowCount due to
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* row spans extending beyond the table */
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nsAutoVoidArray mRows;
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/** the number of rows in the table (content) which is not indentical to the
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* number of rows in the cell map due to row spans extending beyond the end
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* of thetable (dead rows) or empty tr tags
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*/
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PRInt32 mRowCount;
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// the row group that corresponds to this map
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nsTableRowGroupFrame* mRowGroupFrame;
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// the next row group cell map
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nsCellMap* mNextSibling;
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};
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/* ----- inline methods ----- */
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inline PRInt32 nsTableCellMap::GetColCount() const
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{
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return mCols.Count();
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}
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inline nsCellMap* nsCellMap::GetNextSibling() const
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{
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return mNextSibling;
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}
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inline void nsCellMap::SetNextSibling(nsCellMap* aSibling)
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{
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mNextSibling = aSibling;
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}
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inline nsTableRowGroupFrame* nsCellMap::GetRowGroup() const
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{
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return mRowGroupFrame;
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}
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inline PRInt32 nsCellMap::GetRowCount(PRBool aConsiderDeadRowSpanRows) const
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{
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PRInt32 rowCount = (aConsiderDeadRowSpanRows) ? mRows.Count() : mRowCount;
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return rowCount;
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}
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// nsColInfo
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inline nsColInfo::nsColInfo()
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:mNumCellsOrig(0), mNumCellsSpan(0)
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{}
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inline nsColInfo::nsColInfo(PRInt32 aNumCellsOrig,
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PRInt32 aNumCellsSpan)
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:mNumCellsOrig(aNumCellsOrig), mNumCellsSpan(aNumCellsSpan)
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{}
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#endif
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