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0bec735087
table frames no longer assume they are n levels below the inner table frame table frames no longer assume their child frames are always the expected type of frame. Now they check the display type and use that as sufficient proof that the frame is of the right type. This implies a heavy reliance on the frame construction code to do the right thing and always stamp out the right kind of frame for a given display type.
115 lines
3.9 KiB
C++
115 lines
3.9 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 nsTableColGroupFrame_h__
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#define nsTableColGroupFrame_h__
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#include "nscore.h"
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#include "nsContainerFrame.h"
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class nsTableColFrame;
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/**
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* nsTableColGroupFrame
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* data structure to maintain information about a single table cell's frame
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*
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* @author sclark
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*/
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class nsTableColGroupFrame : public nsContainerFrame
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{
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public:
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/** instantiate a new instance of nsTableColGroupFrame.
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* @param aResult the new object is returned in this out-param
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* @param aContent the table object to map
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* @param aParent the parent of the new frame
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*
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* @return NS_OK if the frame was properly allocated, otherwise an error code
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*/
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friend nsresult
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NS_NewTableColGroupFrame(nsIContent* aContent,
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nsIFrame* aParentFrame,
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nsIFrame*& aResult);
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NS_IMETHOD Init(nsIPresContext& aPresContext, nsIFrame* aChildList);
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NS_IMETHOD Paint(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect);
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/** reflow of a column group is a trivial matter of reflowing
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* the col group's children (columns), and setting this frame
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* to 0-size. Since tables are row-centric, column group frames
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* don't play directly in the rendering game. They do however
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* maintain important state that effects table and cell layout.
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*/
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NS_IMETHOD Reflow(nsIPresContext& aPresContext,
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nsReflowMetrics& aDesiredSize,
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const nsReflowState& aReflowState,
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nsReflowStatus& aStatus);
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/** returns the number of columns represented by this group.
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* if there are col children, count them (taking into account the span of each)
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* else, check my own span attribute.
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*/
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virtual PRInt32 GetColumnCount ();
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virtual nsTableColFrame * GetColumnAt (PRInt32 aColIndex);
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virtual PRInt32 GetStartColumnIndex ();
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virtual void SetStartColumnIndex (PRInt32 aIndex);
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/** helper method to get the span attribute for this colgroup */
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PRInt32 GetSpan();
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NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0, nsIListFilter *aFilter = nsnull) const;
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protected:
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nsTableColGroupFrame(nsIContent* aContent, nsIFrame* aParentFrame);
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~nsTableColGroupFrame();
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/** Hook for style post processing.
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* Since we need to know the full column structure before the COLS attribute
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* can be interpreted, we can't just use DidSetStyleContext
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*/
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NS_METHOD SetStyleContextForFirstPass(nsIPresContext* aPresContext);
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nsresult InitNewFrames(nsIPresContext& aPresContext, nsIFrame* aChildList);
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nsresult AppendNewFrames(nsIPresContext& aPresContext, nsIFrame* aChildList);
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PRInt32 mColCount;
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/** the starting column index this col group represents. Must be >= 0. */
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PRInt32 mStartColIndex;
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};
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inline int nsTableColGroupFrame::GetStartColumnIndex ()
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{ return mStartColIndex;}
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inline void nsTableColGroupFrame::SetStartColumnIndex (int aIndex)
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{
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if (aIndex != mStartColIndex)
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mColCount = 0; // our index is being changed, trigger reset of col indicies, don't propogate back to table
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mStartColIndex = aIndex;
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}
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#endif
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