/* -*- 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 1.0 (the "NPL"); you may not use this file except in * compliance with the NPL. You may obtain a copy of the NPL at * http://www.mozilla.org/NPL/ * * Software distributed under the NPL is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL * for the specific language governing rights and limitations under the * NPL. * * The Initial Developer of this code under the NPL is Netscape * Communications Corporation. Portions created by Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All Rights * Reserved. */ #ifndef nsTableRowGroupFrame_h__ #define nsTableRowGroupFrame_h__ #include "nscore.h" #include "nsHTMLContainerFrame.h" #include "nsIAtom.h" class nsTableFrame; class nsTableRowFrame; /* ----------- RowGroupReflowState ---------- */ struct RowGroupReflowState { nsIPresContext& mPresContext; // Our pres context const nsHTMLReflowState& reflowState; // Our reflow state // The available size (computed from the parent) nsSize availSize; // Flags for whether the max size is unconstrained PRBool unconstrainedWidth; PRBool unconstrainedHeight; // Running y-offset nscoord y; // Flag used to set maxElementSize to my first row PRBool firstRow; // Remember the height of the first row, because it's our maxElementHeight (plus header/footers) nscoord firstRowHeight; nsTableFrame *tableFrame; RowGroupReflowState(nsIPresContext& aPresContext, const nsHTMLReflowState& aReflowState, nsTableFrame * aTableFrame) : mPresContext(aPresContext), reflowState(aReflowState) { availSize.width = reflowState.availableWidth; availSize.height = reflowState.availableHeight; y=0; // border/padding??? unconstrainedWidth = PRBool(reflowState.availableWidth == NS_UNCONSTRAINEDSIZE); unconstrainedHeight = PRBool(reflowState.availableHeight == NS_UNCONSTRAINEDSIZE); firstRow = PR_TRUE; firstRowHeight=0; tableFrame = aTableFrame; } ~RowGroupReflowState() { } }; #define NS_ITABLEROWGROUPFRAME_IID \ { 0xe940e7bc, 0xb534, 0x11d2, \ { 0x95, 0xa2, 0x0, 0x60, 0xb0, 0xc3, 0x44, 0x14 } } /** * nsTableRowGroupFrame is the frame that maps row groups * (HTML tags THEAD, TFOOT, and TBODY). This class cannot be reused * outside of an nsTableFrame. It assumes that its parent is an nsTableFrame, and * its children are nsTableRowFrames. * * @see nsTableFrame * @see nsTableRowFrame */ class nsTableRowGroupFrame : public nsHTMLContainerFrame { public: // default constructor supplied by the compiler /** instantiate a new instance of nsTableRowGroupFrame. * @param aResult the new object is returned in this out-param * @param aContent the table object to map * @param aParent the parent of the new frame * * @return NS_OK if the frame was properly allocated, otherwise an error code */ friend nsresult NS_NewTableRowGroupFrame(nsIFrame** aResult); NS_METHOD QueryInterface(const nsIID& aIID, void** aInstancePtr); NS_IMETHOD AppendFrames(nsIPresContext& aPresContext, nsIPresShell& aPresShell, nsIAtom* aListName, nsIFrame* aFrameList); NS_IMETHOD InsertFrames(nsIPresContext& aPresContext, nsIPresShell& aPresShell, nsIAtom* aListName, nsIFrame* aPrevFrame, nsIFrame* aFrameList); NS_IMETHOD RemoveFrame(nsIPresContext& aPresContext, nsIPresShell& aPresShell, nsIAtom* aListName, nsIFrame* aOldFrame); /** @see nsIFrame::Paint */ NS_IMETHOD Paint(nsIPresContext& aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect, nsFramePaintLayer aWhichLayer); /** ask all children to paint themselves, without clipping (for cells with rowspan>1) * @see nsIFrame::Paint */ virtual void PaintChildren(nsIPresContext& aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect, nsFramePaintLayer aWhichLayer); /** * Find the correct descendant frame. * Return PR_TRUE if a frame containing the point is found. * @see nsContainerFrame::GetFrameForPoint */ NS_IMETHOD GetFrameForPoint(const nsPoint& aPoint, nsIFrame** aFrame); /** calls Reflow for all of its child rows. * Rows are all set to the same width and stacked vertically. *

rows are not split unless absolutely necessary. * * @param aDesiredSize width set to width of rows, height set to * sum of height of rows that fit in aMaxSize.height. * * @see nsIFrame::Reflow */ NS_IMETHOD Reflow(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus); /** * Get the "type" of the frame * * @see nsLayoutAtoms::tableRowGroupFrame */ NS_IMETHOD GetFrameType(nsIAtom** aType) const; NS_IMETHOD GetFrameName(nsString& aResult) const; /** set aCount to the number of child rows (not necessarily == number of child frames) */ NS_METHOD GetRowCount(PRInt32 &aCount, PRBool aDeepCount = PR_TRUE); /** return the table-relative row index of the first row in this rowgroup. * if there are no rows, -1 is returned. */ PRInt32 GetStartRowIndex(); /** get the maximum number of columns taken up by any row in this rowgroup */ NS_METHOD GetMaxColumns(PRInt32 &aMaxColumns); /** * Used for header and footer row group frames that are repeated when * splitting a table frame. * * Performs any table specific initialization * * @param aHeaderFooterFrame the original header or footer row group frame * that was repeated */ nsresult InitRepeatedFrame(nsTableRowGroupFrame* aHeaderFooterFrame); /** * Get the total height of all the row rects */ NS_METHOD GetHeightOfRows(nscoord& aResult); virtual PRBool RowGroupReceivesExcessSpace() { return PR_TRUE; } virtual PRBool ContinueReflow(nsIPresContext& aPresContext, nscoord y, nscoord height) { return PR_TRUE; } protected: /** implement abstract method on nsHTMLContainerFrame */ virtual PRIntn GetSkipSides() const; void PlaceChild(nsIPresContext& aPresContext, RowGroupReflowState& aReflowState, nsIFrame* aKidFrame, const nsRect& aKidRect, nsSize* aMaxElementSize, nsSize& aKidMaxElementSize); void CalculateRowHeights(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState); /** Incremental Reflow attempts to do column balancing with the minimum number of reflow * commands to child elements. This is done by processing the reflow command, * rebalancing column widths (if necessary), then comparing the resulting column widths * to the prior column widths and reflowing only those cells that require a reflow. * * @see Reflow */ NS_IMETHOD IncrementalReflow(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, RowGroupReflowState& aReflowState, nsReflowStatus& aStatus); NS_IMETHOD IR_TargetIsChild(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, RowGroupReflowState& aReflowState, nsReflowStatus& aStatus, nsIFrame * aNextFrame); NS_IMETHOD IR_TargetIsMe(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, RowGroupReflowState& aReflowState, nsReflowStatus& aStatus); NS_IMETHOD IR_StyleChanged(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, RowGroupReflowState& aReflowState, nsReflowStatus& aStatus); NS_IMETHOD DidAppendRow(nsTableRowFrame *aRowFrame); PRBool NoRowsFollow(); nsresult AdjustSiblingsAfterReflow(nsIPresContext& aPresContext, RowGroupReflowState& aReflowState, nsIFrame* aKidFrame, nscoord aDeltaY); /** * Reflow the frames we've already created * * @param aPresContext presentation context to use * @param aReflowState current inline state * @return true if we successfully reflowed all the mapped children and false * otherwise, e.g. we pushed children to the next in flow */ NS_METHOD ReflowMappedChildren(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, RowGroupReflowState& aReflowState, nsReflowStatus& aStatus, nsTableRowFrame * aStartFrame, nsReflowReason aReason, PRBool aDoSiblings, PRBool aDirtyOnly = PR_FALSE); /** * Pull-up all the row frames from our next-in-flow */ NS_METHOD PullUpAllRowFrames(nsIPresContext& aPresContext); nsresult SplitRowGroup(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsTableFrame* aTableFrame, nsReflowStatus& aStatus); NS_IMETHOD ReflowBeforeRowLayout(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, RowGroupReflowState& aReflowState, nsReflowStatus& aStatus, nsReflowReason aReason) { return NS_OK; }; NS_IMETHOD ReflowAfterRowLayout(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, RowGroupReflowState& aReflowState, nsReflowStatus& aStatus, nsReflowReason aReason) { return NS_OK; }; nsresult AddTableDirtyReflowCommand(nsIPresContext& aPresContext, nsIPresShell& aPresShell, nsIFrame* aTableFrame); virtual nsIFrame* GetFirstFrameForReflow(nsIPresContext& aPresContext) { return mFrames.FirstChild(); }; virtual void GetNextFrameForReflow(nsIPresContext& aPresContext, nsIFrame* aFrame, nsIFrame** aResult) { aFrame->GetNextSibling(aResult); }; void GetNextRowSibling(nsIFrame** aRowFrame); public: virtual nsIFrame* GetFirstFrame() { return mFrames.FirstChild(); }; virtual nsIFrame* GetLastFrame() { return mFrames.LastChild(); }; virtual void GetNextFrame(nsIFrame* aFrame, nsIFrame** aResult) { aFrame->GetNextSibling(aResult); }; virtual PRBool RowsDesireExcessSpace() { return PR_TRUE; }; virtual PRBool RowGroupDesiresExcessSpace() { return PR_TRUE; }; private: nsIAtom *mType; }; #endif