/* -*- 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 nsTableRowGroupFrame_h__ #define nsTableRowGroupFrame_h__ #include "nscore.h" #include "nsHTMLContainerFrame.h" #include "nsIAtom.h" #include "nsILineIterator.h" class nsTableFrame; class nsTableRowFrame; class nsTableCellFrame; #ifdef DEBUG_TABLE_REFLOW_TIMING class nsReflowTimer; #endif struct nsRowGroupReflowState { const nsHTMLReflowState& reflowState; // Our reflow state nsTableFrame* tableFrame; nsReflowReason reason; // The available size (computed from the parent) nsSize availSize; // Running y-offset nscoord y; nsRowGroupReflowState(const nsHTMLReflowState& aReflowState, nsTableFrame* aTableFrame) :reflowState(aReflowState), tableFrame(aTableFrame) { availSize.width = reflowState.availableWidth; availSize.height = reflowState.availableHeight; reason = reflowState.reason; y = 0; } ~nsRowGroupReflowState() {} }; #define NS_ITABLEROWGROUPFRAME_IID \ { 0xe940e7bc, 0xb534, 0x11d2, \ { 0x95, 0xa2, 0x0, 0x60, 0xb0, 0xc3, 0x44, 0x14 } } // use a bit from nsFrame's frame state bits to determine whether a // thead or tfoot should be repeated on every printed page #define NS_ROWGROUP_REPEATABLE 0x80000000 /** * 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 nsILineIteratorNavigator { public: // nsISupports NS_DECL_ISUPPORTS_INHERITED // 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(nsIPresShell* aPresShell, nsIFrame** aResult); virtual ~nsTableRowGroupFrame(); NS_IMETHOD Init(nsIPresContext* aPresContext, nsIContent* aContent, nsIFrame* aParent, nsIStyleContext* aContext, nsIFrame* aPrevInFlow); 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(nsIPresContext* aPresContext, const nsPoint& aPoint, nsFramePaintLayer aWhichLayer, 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; #ifdef DEBUG NS_IMETHOD GetFrameName(nsString& aResult) const; NS_IMETHOD SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const; #endif /** return the number of child rows (not necessarily == number of child frames) */ PRInt32 GetRowCount(); /** return the table-relative row index of the first row in this rowgroup. * if there are no rows, -1 is returned. */ PRInt32 GetStartRowIndex(); /** * 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(nsIPresContext* aPresContext, nsTableRowGroupFrame* aHeaderFooterFrame); /** * Get the total height of all the row rects */ nscoord GetHeightOfRows(nsIPresContext* aPresContext); // nsILineIterator methods public: NS_IMETHOD GetNumLines(PRInt32* aResult); NS_IMETHOD GetDirection(PRBool* aIsRightToLeft); NS_IMETHOD GetLine(PRInt32 aLineNumber, nsIFrame** aFirstFrameOnLine, PRInt32* aNumFramesOnLine, nsRect& aLineBounds, PRUint32* aLineFlags); NS_IMETHOD FindLineContaining(nsIFrame* aFrame, PRInt32* aLineNumberResult); NS_IMETHOD FindLineAt(nscoord aY, PRInt32* aLineNumberResult); NS_IMETHOD FindFrameAt(PRInt32 aLineNumber, nscoord aX, #ifdef IBMBIDI PRBool aCouldBeReordered, #endif nsIFrame** aFrameFound, PRBool* aXIsBeforeFirstFrame, PRBool* aXIsAfterLastFrame); #ifdef IBMBIDI NS_IMETHOD CheckLineOrder(PRInt32 aLine, PRBool *aIsReordered, nsIFrame **aFirstVisual, nsIFrame **aLastVisual); #endif NS_IMETHOD GetNextSiblingOnLine(nsIFrame*& aFrame, PRInt32 aLineNumber); protected: nsTableRowGroupFrame(); /** implement abstract method on nsHTMLContainerFrame */ virtual PRIntn GetSkipSides() const; void PlaceChild(nsIPresContext* aPresContext, nsRowGroupReflowState& aReflowState, nsIFrame* aKidFrame, nsHTMLReflowMetrics& aDesiredSize); 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, nsRowGroupReflowState& aReflowState, nsReflowStatus& aStatus); NS_IMETHOD IR_TargetIsChild(nsIPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, nsRowGroupReflowState& aReflowState, nsReflowStatus& aStatus, nsIFrame* aNextFrame); NS_IMETHOD IR_TargetIsMe(nsIPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, nsRowGroupReflowState& aReflowState, nsReflowStatus& aStatus); NS_IMETHOD IR_StyleChanged(nsIPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, nsRowGroupReflowState& aReflowState, nsReflowStatus& aStatus); nsresult AdjustSiblingsAfterReflow(nsIPresContext* aPresContext, nsRowGroupReflowState& aReflowState, nsIFrame* aKidFrame, nscoord aDeltaY); nsresult RecoverState(nsRowGroupReflowState& aReflowState, nsIFrame* aKidFrame); /** * 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 ReflowChildren(nsIPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, nsRowGroupReflowState& aReflowState, nsReflowStatus& aStatus, nsTableRowFrame* aStartFrame, 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); nscoord SplitSpanningCells(nsIPresContext& aPresContext, const nsHTMLReflowState& aReflowState, nsIStyleSet& aStyleSet, nsTableFrame& aTableFrame, nsTableRowFrame& aRowFrame, nscoord aRowEndY, nsTableRowFrame* aContRowFrame); void CreateContinuingRowFrame(nsIPresContext& aPresContext, nsIStyleSet& aStyleSet, nsIFrame& aRowFrame, nsIFrame** aContRowFrame); PRBool IsSimpleRowFrame(nsTableFrame* aTableFrame, nsIFrame* aFrame); 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); }; PRBool IsRepeatable(); void SetRepeatable(PRBool aRepeatable); #ifdef DEBUG_TABLE_REFLOW_TIMING public: nsReflowTimer* mTimer; #endif }; inline PRBool nsTableRowGroupFrame::IsRepeatable() { return (mState & NS_ROWGROUP_REPEATABLE) == NS_ROWGROUP_REPEATABLE; } inline void nsTableRowGroupFrame::SetRepeatable(PRBool aRepeatable) { if (aRepeatable) { mState |= NS_ROWGROUP_REPEATABLE; } else { mState &= ~NS_ROWGROUP_REPEATABLE; } } #endif