/* -*- 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 nsTableRowFrame; struct RowGroupReflowState; /** * 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 * * @author sclark */ class nsTableRowGroupFrame : public nsHTMLContainerFrame { public: /** 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(nsIContent* aContent, nsIFrame* aParentFrame, nsIFrame*& aResult); NS_IMETHOD Init(nsIPresContext& aPresContext, nsIFrame* aChildList); /** @see nsIFrame::Paint */ NS_IMETHOD Paint(nsIPresContext& aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect); /** 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); /** 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); /** returns the type of the mapped row group content in aType. * caller MUST call release on the returned object if it is not null. * * @param aType out param filled with the type of the mapped content, or null if none. * * @return NS_OK */ NS_IMETHOD GetRowGroupType(nsIAtom *& aType); /** set aCount to the number of child rows (not necessarily == number of child frames) */ NS_METHOD GetRowCount(PRInt32 &aCount); /** get the maximum number of columns taken up by any row in this rowgroup */ NS_METHOD GetMaxColumns(PRInt32 &aMaxColumns) const; NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0, nsIListFilter *aFilter = nsnull) const; protected: /** protected constructor. * @see NewFrame */ nsTableRowGroupFrame(nsIContent* aContent, nsIFrame* aParentFrame); /** protected destructor */ ~nsTableRowGroupFrame(); /** implement abstract method on nsHTMLContainerFrame */ virtual PRIntn GetSkipSides() const; nscoord GetTopMarginFor(nsIPresContext* aCX, RowGroupReflowState& aReflowState, const nsMargin& aKidMargin); void PlaceChild( nsIPresContext& aPresContext, RowGroupReflowState& aReflowState, nsIFrame* aKidFrame, const nsRect& aKidRect, nsSize* aMaxElementSize, nsSize& aKidMaxElementSize); void ShrinkWrapChildren(nsIPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize); /** 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, const nsHTMLReflowState& 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_RowInserted(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, RowGroupReflowState& aReflowState, nsReflowStatus& aStatus, nsTableRowFrame * aInsertedFrame, PRBool aReplace); NS_IMETHOD IR_RowAppended(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, RowGroupReflowState& aReflowState, nsReflowStatus& aStatus, nsTableRowFrame * aAppendedFrame); NS_IMETHOD IR_RowRemoved(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, RowGroupReflowState& aReflowState, nsReflowStatus& aStatus, nsTableRowFrame * aDeletedFrame); NS_IMETHOD IR_StyleChanged(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, RowGroupReflowState& aReflowState, nsReflowStatus& aStatus); NS_IMETHOD DidAppendRow(nsTableRowFrame *aRowFrame); PRBool NoRowsFollow(); /** @see nsContainerFrame::CreateContinuingFrame */ NS_IMETHOD CreateContinuingFrame(nsIPresContext& aPresContext, nsIFrame* aParent, nsIStyleContext* aStyleContext, nsIFrame*& aContinuingFrame); 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); /** * Try and pull-up frames from our next-in-flow * * @param aPresContext presentation context to use * @param aReflowState current inline state * @return true if we successfully pulled-up all the children and false * otherwise, e.g. child didn't fit */ NS_METHOD PullUpChildren(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, RowGroupReflowState& aReflowState, nsReflowStatus& aStatus); private: nsIAtom *mType; }; #endif