зеркало из https://github.com/mozilla/gecko-dev.git
228 строки
9.2 KiB
C++
228 строки
9.2 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 nsTableRowGroupFrame_h__
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#define nsTableRowGroupFrame_h__
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#include "nscore.h"
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#include "nsHTMLContainerFrame.h"
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#include "nsIAtom.h"
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class nsTableRowFrame;
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struct RowGroupReflowState;
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/**
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* nsTableRowGroupFrame is the frame that maps row groups
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* (HTML tags THEAD, TFOOT, and TBODY). This class cannot be reused
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* outside of an nsTableFrame. It assumes that its parent is an nsTableFrame, and
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* its children are nsTableRowFrames.
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*
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* @see nsTableFrame
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* @see nsTableRowFrame
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*/
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class nsTableRowGroupFrame : 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 nsTableRowGroupFrame.
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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_NewTableRowGroupFrame(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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/** @see nsIFrame::Paint */
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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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/** ask all children to paint themselves, without clipping (for cells with rowspan>1)
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* @see nsIFrame::Paint
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*/
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virtual void PaintChildren(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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/**
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* Find the correct descendant frame.
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* Return PR_TRUE if a frame containing the point is found.
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* @see nsContainerFrame::GetFrameForPoint
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*/
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NS_IMETHOD GetFrameForPoint(const nsPoint& aPoint, nsIFrame** aFrame);
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/** calls Reflow for all of its child rows.
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* Rows are all set to the same width and stacked vertically.
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* <P> rows are not split unless absolutely necessary.
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*
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* @param aDesiredSize width set to width of rows, height set to
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* sum of height of rows that fit in aMaxSize.height.
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*
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* @see nsIFrame::Reflow
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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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/** set aCount to the number of child rows (not necessarily == number of child frames) */
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NS_METHOD GetRowCount(PRInt32 &aCount);
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/** return the table-relative row index of the first row in this rowgroup.
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* if there are no rows, -1 is returned.
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*/
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PRInt32 GetStartRowIndex();
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/** get the maximum number of columns taken up by any row in this rowgroup */
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NS_METHOD GetMaxColumns(PRInt32 &aMaxColumns) const;
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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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/** implement abstract method on nsHTMLContainerFrame */
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virtual PRIntn GetSkipSides() const;
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void PlaceChild(nsIPresContext& aPresContext,
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RowGroupReflowState& aReflowState,
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nsIFrame* aKidFrame,
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const nsRect& aKidRect,
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nsSize* aMaxElementSize,
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nsSize& aKidMaxElementSize);
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void CalculateRowHeights(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState);
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/** Incremental Reflow attempts to do column balancing with the minimum number of reflow
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* commands to child elements. This is done by processing the reflow command,
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* rebalancing column widths (if necessary), then comparing the resulting column widths
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* to the prior column widths and reflowing only those cells that require a reflow.
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*
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* @see Reflow
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*/
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NS_IMETHOD IncrementalReflow(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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RowGroupReflowState& 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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RowGroupReflowState& aReflowState,
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nsReflowStatus& aStatus,
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nsIFrame * aNextFrame);
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NS_IMETHOD IR_TargetIsMe(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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RowGroupReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD IR_RowInserted(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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RowGroupReflowState& aReflowState,
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nsReflowStatus& aStatus,
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nsTableRowFrame * aInsertedFrame,
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PRBool aReplace);
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NS_IMETHOD IR_RowAppended(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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RowGroupReflowState& aReflowState,
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nsReflowStatus& aStatus,
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nsTableRowFrame * aAppendedFrame);
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NS_IMETHOD IR_RowRemoved(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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RowGroupReflowState& aReflowState,
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nsReflowStatus& aStatus,
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nsTableRowFrame * aDeletedFrame);
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NS_IMETHOD IR_StyleChanged(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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RowGroupReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD DidAppendRow(nsTableRowFrame *aRowFrame);
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PRBool NoRowsFollow();
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/** @see nsContainerFrame::CreateContinuingFrame */
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NS_IMETHOD CreateContinuingFrame(nsIPresContext& aPresContext,
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nsIFrame* aParent,
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nsIStyleContext* aStyleContext,
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nsIFrame*& aContinuingFrame);
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nsresult AdjustSiblingsAfterReflow(nsIPresContext& aPresContext,
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RowGroupReflowState& aReflowState,
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nsIFrame* aKidFrame,
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nscoord aDeltaY);
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/**
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* Reflow the frames we've already created
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*
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* @param aPresContext presentation context to use
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* @param aReflowState current inline state
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* @return true if we successfully reflowed all the mapped children and false
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* otherwise, e.g. we pushed children to the next in flow
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*/
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NS_METHOD ReflowMappedChildren(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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RowGroupReflowState& aReflowState,
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nsReflowStatus& aStatus,
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nsTableRowFrame * aStartFrame,
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nsReflowReason aReason,
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PRBool aDoSiblings);
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/**
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* Try and pull-up frames from our next-in-flow
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*
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* @param aPresContext presentation context to use
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* @param aReflowState current inline state
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* @return true if we successfully pulled-up all the children and false
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* otherwise, e.g. child didn't fit
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*/
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NS_METHOD PullUpChildren(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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RowGroupReflowState& aReflowState,
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nsReflowStatus& aStatus);
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nsresult SplitRowGroup(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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private:
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nsIAtom *mType;
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};
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#endif
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