зеркало из https://github.com/mozilla/gecko-dev.git
167 строки
6.2 KiB
C++
167 строки
6.2 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 "nsHTMLContainerFrame.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 nsHTMLContainerFrame
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{
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public:
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// default constructor supplied by the compiler
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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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*
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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(nsIFrame*& aResult);
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NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
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nsIAtom* aListName,
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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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nsFramePaintLayer aWhichLayer);
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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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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD GetFrameName(nsString& aResult) const;
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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 * GetFirstColumn();
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virtual nsTableColFrame * GetNextColumn(nsIFrame *aChildFrame);
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virtual nsTableColFrame * GetColumnAt(PRInt32 aColIndex);
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virtual PRInt32 GetStartColumnIndex();
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/** sets mStartColIndex to aIndex.
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* @return the col count
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* has the side effect of setting all child COL indexes
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*/
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virtual PRInt32 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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/** helper method returns PR_TRUE if this colgroup exists without any
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* colgroup or col content in the table backing it.
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*/
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//PRBool IsManufactured();
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protected:
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/** implement abstract method on nsHTMLContainerFrame */
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virtual PRIntn GetSkipSides() const;
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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_IMETHOD SetStyleContextForFirstPass(nsIPresContext& aPresContext);
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NS_IMETHOD InitNewFrames(nsIPresContext& aPresContext, nsIFrame* aChildList);
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NS_IMETHOD AppendNewFrames(nsIPresContext& aPresContext, nsIFrame* aChildList);
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NS_IMETHOD IncrementalReflow(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD IR_TargetIsMe(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD IR_ColInserted(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus,
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nsTableColFrame * aInsertedFrame,
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PRBool aReplace);
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NS_IMETHOD IR_ColAppended(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus,
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nsTableColFrame * aAppendedFrame);
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NS_IMETHOD IR_ColRemoved(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus,
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nsTableColFrame * aDeletedFrame);
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NS_IMETHOD IR_StyleChanged(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD IR_TargetIsChild(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus,
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nsIFrame * aNextFrame);
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// data members
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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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#endif
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