gecko-dev/layout/tables/nsITableLayoutStrategy.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsITableLayoutStrategy_h__
#define nsITableLayoutStrategy_h__
#include "nscore.h"
#include "nsSize.h"
class nsIPresContext;
class nsIStyleContext;
struct nsHTMLReflowState;
struct nsMargin;
class nsTableCellFrame;
class nsStyleCoord;
class nsISizeOfHandler;
class nsITableLayoutStrategy
{
public:
virtual ~nsITableLayoutStrategy() {};
/** call once every time any table thing changes (content, structure, or style)
* @param aPresContext - the presentation context
* @param aReflowState - the reflow state for mTableFrame
*/
virtual PRBool Initialize(nsIPresContext* aPresContext,
const nsHTMLReflowState& aReflowState)=0;
/** assign widths for each column, taking into account the table content, the effective style,
* the layout constraints, and the compatibility mode. Sets mColumnWidths as a side effect.
* @param aPresContext - the presentation context
* @param aReflowState - the reflow state for mTableFrame
*/
virtual PRBool BalanceColumnWidths(nsIPresContext* aPresContext,
const nsHTMLReflowState& aReflowState)=0;
/**
* Calculate the basis for percent width calculations of the table elements
* @param aReflowState - the reflow state of the table
* @param aAvailWidth - the available width for the table
* @param aPixelToTwips - the number of twips in a pixel.
* @return - the basis for percent calculations
*/
virtual nscoord CalcPctAdjTableWidth(const nsHTMLReflowState& aReflowState,
nscoord aAvailWidth,
float aPixelToTwips)=0;
#ifdef DEBUG
virtual void SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const = 0;
#endif
};
#endif