gecko-dev/layout/tables/nsITableLayout.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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* The Original Code is mozilla.org code.
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#ifndef nsITableLayout_h__
#define nsITableLayout_h__
#include "nsISupports.h"
class nsIDOMElement;
// IID for the nsITableLayout interface
// A9222E6B-437E-11d3-B227-004095E27A10
#define NS_ITABLELAYOUT_IID \
{ 0xa9222e6b, 0x437e, 0x11d3, { 0xb2, 0x27, 0x0, 0x40, 0x95, 0xe2, 0x7a, 0x10 }}
#define NS_TABLELAYOUT_CELL_NOT_FOUND \
NS_ERROR_GENERATE_SUCCESS(NS_ERROR_MODULE_LAYOUT, 3)
/**
* nsITableLayout
* interface for layout objects that act like tables.
* initially, we use this to get cell info
*
* @author sclark
*/
class nsITableLayout : public nsISupports
{
public:
static const nsIID& GetIID() { static nsIID iid = NS_ITABLELAYOUT_IID; return iid; }
/** return all the relevant layout information about a cell.
* @param aRowIndex a row which the cell intersects
* @param aColIndex a col which the cell intersects
* @param aCell [OUT] the content representing the cell at (aRowIndex, aColIndex)
* @param aStartRowIndex [IN/OUT] the row in which aCell starts
* @param aStartColIndex [IN/OUT] the col in which aCell starts
* Initialize these with the "candidate" start indexes to use
* for searching through the table when a cell isn't found
* because of "holes" in the cellmap
* when ROWSPAN and/or COLSPAN > 1
* @param aRowSpan [OUT] the value of the ROWSPAN attribute (may be 0 or actual number)
* @param aColSpan [OUT] the value of the COLSPAN attribute (may be 0 or actual number)
* @param aActualRowSpan [OUT] the actual number of rows aCell spans
* @param aActualColSpan [OUT] the acutal number of cols aCell spans
* @param aIsSelected [OUT] PR_TRUE if the frame that maps aCell is selected
* in the presentation shell that owns this.
*/
NS_IMETHOD GetCellDataAt(PRInt32 aRowIndex, PRInt32 aColIndex,
nsIDOMElement* &aCell, //out params
PRInt32& aStartRowIndex, PRInt32& aStartColIndex,
PRInt32& aRowSpan, PRInt32& aColSpan,
PRInt32& aActualRowSpan, PRInt32& aActualColSpan,
PRBool& aIsSelected)=0;
/** Get the number of rows and column for a table from the frame's cellmap
* Some rows may not have enough cells (the number returned is the maximum possible),
* which displays as a ragged-right edge table
*/
NS_IMETHOD GetTableSize(PRInt32& aRowCount, PRInt32& aColCount)=0;
};
#endif