зеркало из https://github.com/mozilla/pjs.git
577 строки
21 KiB
C++
577 строки
21 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 "nsTPtrArray.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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class nsPresContext;
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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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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 (aRowIndex, aColIndex) */
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CellData* GetDataAt(PRInt32 aRowIndex,
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PRInt32 aColIndex) const;
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// this function creates a col if needed
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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) const;
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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) const;
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PRInt32 GetEffectiveRowSpan(PRInt32 aRowIndex,
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PRInt32 aColIndex) const;
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PRInt32 GetEffectiveColSpan(PRInt32 aRowIndex,
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PRInt32 aColIndex) const;
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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) const;
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void AddColsAtEnd(PRUint32 aNumCols);
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void RemoveColsAtEnd();
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PRBool RowIsSpannedInto(PRInt32 aRowIndex, PRInt32 aNumEffCols) const;
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PRBool RowHasSpanningCells(PRInt32 aRowIndex, PRInt32 aNumEffCols) const;
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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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protected:
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/**
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* Rebuild due to rows being inserted or deleted with cells spanning
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* into or out of the rows. This function can only handle insertion
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* or deletion but NOT both. So either aRowsToInsert must be null
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* or aNumRowsToRemove must be 0.
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*
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* // XXXbz are both allowed to happen? That'd be a no-op...
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*/
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void RebuildConsideringRows(nsCellMap* aCellMap,
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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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public:
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PRBool ColIsSpannedInto(PRInt32 aColIndex) const;
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PRBool ColHasSpanningCells(PRInt32 aColIndex) const;
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void ExpandZeroColSpans();
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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. Each row is an array of cells. a cell
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* 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 aRowGroupFrame the row group frame this is a cellmap for
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* @param aIsBC whether the table is doing border-collapse
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*/
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nsCellMap(nsTableRowGroupFrame& aRowGroupFrame, PRBool aIsBC);
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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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/** Function to be called when a cell is added at a location which is spanned
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* to by a zero colspan. We handle this situation by collapsing the zero
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* colspan, since there is really no good way to deal with it (trying to
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* increase the number of columns to hold the new cell would just mean the
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* zero colspan needs to expand).
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* @param aMap - reference to the table cell map
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* @param aOrigData - zero colspanned cell that will be collapsed
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* @param aRowIndex - row where the first collision appears
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* @param aColIndex - column where the first collision appears
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**/
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void CollapseZeroColSpan(nsTableCellMap& aMap,
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CellData* aOrigData,
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PRInt32 aRowIndex,
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PRInt32 aColIndex);
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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(const 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) const;
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PRBool RowIsSpannedInto(PRInt32 aRowIndex,
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PRInt32 aNumEffCols) const;
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PRBool RowHasSpanningCells(PRInt32 aRowIndex,
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PRInt32 aNumEffCols) const;
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PRBool ColHasSpanningCells(PRInt32 aColIndex) const;
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void ExpandZeroColSpans(nsTableCellMap& aMap);
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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) const;
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PRInt32 GetRowSpan(PRInt32 aRowIndex,
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PRInt32 aColIndex,
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PRBool aGetEffective,
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PRBool& aIsZeroRowSpan) const;
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PRInt32 GetEffectiveColSpan(const nsTableCellMap& aMap,
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PRInt32 aRowIndex,
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PRInt32 aColIndex,
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PRBool& aIsZeroColSpan) const;
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typedef nsTPtrArray<CellData> CellDataArray;
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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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/**
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* Increase the number of rows in this cellmap by aNumRows. Put the
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* new rows at aRowIndex. If aRowIndex is -1, put them at the end.
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*/
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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(CellDataArray& 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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CellData* GetDataAt(PRInt32 aMapRowIndex,
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PRInt32 aColIndex) const;
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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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/**
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* Rebuild due to rows being inserted or deleted with cells spanning
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* into or out of the rows. This function can only handle insertion
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* or deletion but NOT both. So either aRowsToInsert must be null
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* or aNumRowsToRemove must be 0.
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*
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* // XXXbz are both allowed to happen? That'd be a no-op...
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*/
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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) const;
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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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* @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(PRInt32 aStartRowIndex,
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PRInt32 aEndRowIndex,
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PRInt32 aStartColIndex,
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PRInt32 aEndColIndex) const;
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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) const;
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PRInt32 GetColSpanForNewCell(nsTableCellFrame& aCellFrameToAdd,
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PRBool& aIsZeroColSpan) const;
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PRBool IsZeroColSpan(PRInt32 aRowIndex,
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PRInt32 aColIndex) const;
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// Destroy a CellData struct. This will handle the case of aData
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// actually being a BCCellData properly.
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void DestroyCellData(CellData* aData);
|
|
// Allocate a CellData struct. This will handle needing to create a
|
|
// BCCellData properly.
|
|
// @param aOrigCell the originating cell to pass to the celldata constructor
|
|
CellData* AllocCellData(nsTableCellFrame* aOrigCell);
|
|
|
|
/** an array containing, for each row, the CellDatas for the cells
|
|
* in that row. It can be larger than mRowCount due to row spans
|
|
* extending beyond the table */
|
|
// XXXbz once we have auto TArrays, we should probably use them here.
|
|
nsTArray<CellDataArray> mRows;
|
|
|
|
/** the number of rows in the table (content) which is not indentical to the
|
|
* number of rows in the cell map due to row spans extending beyond the end
|
|
* of thetable (dead rows) or empty tr tags
|
|
*/
|
|
PRInt32 mRowCount;
|
|
|
|
// the row group that corresponds to this map
|
|
nsTableRowGroupFrame* mRowGroupFrame;
|
|
|
|
// the next row group cell map
|
|
nsCellMap* mNextSibling;
|
|
|
|
// Whether this is a BC cellmap or not
|
|
PRBool mIsBC;
|
|
|
|
// Prescontext to deallocate and allocate celldata
|
|
nsCOMPtr<nsPresContext> mPresContext;
|
|
};
|
|
|
|
/* ----- inline methods ----- */
|
|
inline PRInt32 nsTableCellMap::GetColCount() const
|
|
{
|
|
return mCols.Count();
|
|
}
|
|
|
|
inline nsCellMap* nsCellMap::GetNextSibling() const
|
|
{
|
|
return mNextSibling;
|
|
}
|
|
|
|
inline void nsCellMap::SetNextSibling(nsCellMap* aSibling)
|
|
{
|
|
mNextSibling = aSibling;
|
|
}
|
|
|
|
inline nsTableRowGroupFrame* nsCellMap::GetRowGroup() const
|
|
{
|
|
return mRowGroupFrame;
|
|
}
|
|
|
|
inline PRInt32 nsCellMap::GetRowCount(PRBool aConsiderDeadRowSpanRows) const
|
|
{
|
|
PRInt32 rowCount = (aConsiderDeadRowSpanRows) ? mRows.Length() : mRowCount;
|
|
return rowCount;
|
|
}
|
|
|
|
// nsColInfo
|
|
|
|
inline nsColInfo::nsColInfo()
|
|
:mNumCellsOrig(0), mNumCellsSpan(0)
|
|
{}
|
|
|
|
inline nsColInfo::nsColInfo(PRInt32 aNumCellsOrig,
|
|
PRInt32 aNumCellsSpan)
|
|
:mNumCellsOrig(aNumCellsOrig), mNumCellsSpan(aNumCellsSpan)
|
|
{}
|
|
|
|
|
|
#endif
|