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81 lines
3.4 KiB
C++
81 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsITableLayout_h__
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#define nsITableLayout_h__
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#include "nsQueryFrame.h"
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class nsIDOMElement;
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/**
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* nsITableLayout
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* interface for layout objects that act like tables.
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* initially, we use this to get cell info
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*
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* @author sclark
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*/
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class nsITableLayout
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{
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public:
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NS_DECL_QUERYFRAME_TARGET(nsITableLayout)
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/** return all the relevant layout information about a cell.
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* @param aRowIndex a row which the cell intersects
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* @param aColIndex a col which the cell intersects
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* @param aCell [OUT] the content representing the cell at (aRowIndex, aColIndex)
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* @param aStartRowIndex [IN/OUT] the row in which aCell starts
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* @param aStartColIndex [IN/OUT] the col in which aCell starts
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* Initialize these with the "candidate" start indexes to use
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* for searching through the table when a cell isn't found
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* because of "holes" in the cellmap
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* when ROWSPAN and/or COLSPAN > 1
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* @param aRowSpan [OUT] the value of the ROWSPAN attribute (may be 0 or actual number)
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* @param aColSpan [OUT] the value of the COLSPAN attribute (may be 0 or actual number)
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* @param aActualRowSpan [OUT] the actual number of rows aCell spans
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* @param aActualColSpan [OUT] the acutal number of cols aCell spans
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* @param aIsSelected [OUT] true if the frame that maps aCell is selected
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* in the presentation shell that owns this.
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*/
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NS_IMETHOD GetCellDataAt(PRInt32 aRowIndex, PRInt32 aColIndex,
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nsIDOMElement* &aCell, //out params
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PRInt32& aStartRowIndex, PRInt32& aStartColIndex,
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PRInt32& aRowSpan, PRInt32& aColSpan,
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PRInt32& aActualRowSpan, PRInt32& aActualColSpan,
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bool& aIsSelected)=0;
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/** Get the number of rows and column for a table from the frame's cellmap
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* Some rows may not have enough cells (the number returned is the maximum possible),
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* which displays as a ragged-right edge table
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*/
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NS_IMETHOD GetTableSize(PRInt32& aRowCount, PRInt32& aColCount)=0;
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/**
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* Retrieves the index of the cell at the given coordinates.
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*
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* @note The index is the order number of the cell calculated from top left
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* cell to the right bottom cell of the table.
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*
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* @param aRow [in] the row the cell is in
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* @param aColumn [in] the column the cell is in
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* @param aIndex [out] the index to be returned
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*/
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NS_IMETHOD GetIndexByRowAndColumn(PRInt32 aRow, PRInt32 aColumn,
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PRInt32 *aIndex) = 0;
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/**
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* Retrieves the coordinates of the cell at the given index.
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*
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* @see nsITableLayout::GetIndexByRowAndColumn()
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*
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* @param aIndex [in] the index for which the coordinates are to be retrieved
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* @param aRow [out] the resulting row coordinate
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* @param aColumn [out] the resulting column coordinate
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*/
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NS_IMETHOD GetRowAndColumnByIndex(PRInt32 aIndex,
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PRInt32 *aRow, PRInt32 *aColumn) = 0;
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};
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#endif
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