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95 lines
2.7 KiB
C++
95 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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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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class CellData;
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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::BuildCellMap
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* @see nsTableFrame::GrowCellMap
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* @see nsTableFrame::BuildCellIntoMap
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*
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* acts like a 2-dimensional array, so all offsets are 0-indexed
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*/
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class nsCellMap
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{
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protected:
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/** storage for CellData pointers */
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PRInt32 *mCells;
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/** the number of rows */
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int mRowCount; // in java, we could just do fCellMap.length;
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/** the number of columns (the max of all row lengths) */
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int mColCount; // in java, we could just do fCellMap[i].length
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public:
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nsCellMap(int aRows, int aColumns);
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// NOT VIRTUAL BECAUSE THIS CLASS SHOULD **NEVER** BE SUBCLASSED
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~nsCellMap();
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/** initialize the CellMap to (aRows x aColumns) */
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void Reset(int aRows, int aColumns);
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/** return the CellData for the cell at (aRow,aColumn) */
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CellData * GetCellAt(int aRow, int aColumn) const;
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/** assign aCellData to the cell at (aRow,aColumn) */
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void SetCellAt(CellData *aCellData, int aRow, int aColumn);
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/** expand the CellMap to have aColCount columns. The number of rows remains the same */
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void GrowTo(int aColCount);
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/** return the total number of columns in the table represented by this CellMap */
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int GetColCount() const;
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/** return the total number of rows in the table represented by this CellMap */
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int GetRowCount() const;
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/** for debugging, print out this CellMap */
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void DumpCellMap() const;
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};
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inline CellData * nsCellMap::GetCellAt(int aRow, int aColumn) const
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{
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int index = (aRow*mColCount)+aColumn;
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return (CellData *)mCells[index];
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}
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inline int nsCellMap::GetColCount() const
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{
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return mColCount;
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}
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inline int nsCellMap::GetRowCount() const
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{
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return mRowCount;
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}
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#endif
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