/* -*- 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 nsTableOuterFrame_h__ #define nsTableOuterFrame_h__ #include "nscore.h" #include "nsHTMLContainerFrame.h" struct OuterTableReflowState; struct nsStyleText; /* TODO 1. decide if we'll allow subclassing. If so, decide which methods really need to be virtual. */ /** * main frame for an nsTable content object, * the nsTableOuterFrame contains 0 or one caption frame, and a nsTableFrame * psuedo-frame (referred to as the "inner frame'). *

Unlike other frames that handle continuing across breaks, nsTableOuterFrame * has no notion of "unmapped" children. All children (caption and inner table) * have frames created in Pass 1, so from the layout process' point of view, they * are always mapped * */ class nsTableOuterFrame : public nsHTMLContainerFrame { public: /** instantiate a new instance of nsTableOuterFrame. * @param aResult the new object is returned in this out-param * * @return NS_OK if the frame was properly allocated, otherwise an error code */ friend nsresult NS_NewTableOuterFrame(nsIFrame*& aResult); /** @see nsIFrame::SetInitialChildList */ NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext, nsIAtom* aListName, nsIFrame* aChildList); /** @see nsIFrame::Paint */ NS_IMETHOD Paint(nsIPresContext& aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect, nsFramePaintLayer aWhichLayer); /** process a reflow command for the table. * This involves reflowing the caption and the inner table. * @see nsIFrame::Reflow */ NS_IMETHOD Reflow(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus); /** * Get the "type" of the frame * * @see nsLayoutAtoms::tableOuterFrame */ NS_IMETHOD GetFrameType(nsIAtom** aType) const; /** @see nsIFrame::GetFrameName */ NS_IMETHOD GetFrameName(nsString& aResult) const; /** return the min width of the caption. Return 0 if there is no caption. * The return value is only meaningful after the caption has had a pass1 reflow. */ nscoord GetMinCaptionWidth(); protected: /** Always returns 0, since the outer table frame has no border of its own * The inner table frame can answer this question in a meaningful way. * @see nsHTMLContainerFrame::GetSkipSides */ virtual PRIntn GetSkipSides() const; /** return PR_TRUE if the table needs to be reflowed. * the outer table needs to be reflowed if the table content has changed, * or if the table style attributes or parent max height/width have * changed. */ PRBool NeedsReflow(const nsHTMLReflowState& aReflowState, const nsSize& aMaxSize); /** position the child frame * @param aReflowState the state of the reflow process * @param aKidFrame the frame to place. * @param aKidRect the computed dimensions of aKidFrame. The origin of aKidRect * is relative to the upper-left origin of this frame. * @param aMaxElementSize the table's maxElementSize * may be nsnull, meaning that we're not computing maxElementSize during this reflow * set to the caption's maxElementSize, if aKidFrame is the caption * the tables maxElementSize eventually gets set to the max of * the value here and the value of the inner table, elsewhere during reflow. * @param aKidMaxElementSize the maxElementSize of aKidFrame, if available */ void PlaceChild(OuterTableReflowState& aReflowState, nsIFrame* aKidFrame, const nsRect& aKidRect, nsSize* aMaxElementSize, nsSize& aKidMaxElementSize); /** compute the width available to the table during reflow, based on * the reflow state and the table's style. * @return the computed width */ nscoord ComputeAvailableTableWidth(const nsHTMLReflowState& aReflowState); /** overridden here to handle special caption-table relationship * @see nsContainerFrame::VerifyTree */ NS_IMETHOD VerifyTree() const; /** * Remove and delete aChild's next-in-flow(s). Updates the sibling and flow * pointers. * * Updates the child count and content offsets of all containers that are * affected * * Overloaded here because nsContainerFrame makes assumptions about pseudo-frames * that are not true for tables. * * @param aChild child this child's next-in-flow * @return PR_TRUE if successful and PR_FALSE otherwise */ virtual void DeleteChildsNextInFlow(nsIPresContext& aPresContext, nsIFrame* aChild); // begin Incremental Reflow methods /** prepare aReflowState for an incremental reflow */ NS_IMETHOD RecoverState(OuterTableReflowState& aReflowState, nsIFrame* aKidFrame); /** process an incremental reflow command */ NS_IMETHOD IncrementalReflow(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, OuterTableReflowState& aReflowState, nsReflowStatus& aStatus); /** process an incremental reflow command targeted at a child of this frame. */ NS_IMETHOD IR_TargetIsChild(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, OuterTableReflowState& aReflowState, nsReflowStatus& aStatus, nsIFrame * aNextFrame); /** process an incremental reflow command targeted at the table inner frame. */ NS_IMETHOD IR_TargetIsInnerTableFrame(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, OuterTableReflowState& aReflowState, nsReflowStatus& aStatus); /** process an incremental reflow command targeted at the caption. */ NS_IMETHOD IR_TargetIsCaptionFrame(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, OuterTableReflowState& aReflowState, nsReflowStatus& aStatus); /** process an incremental reflow command targeted at this frame. * many incremental reflows that are targeted at this outer frame * are actually handled by the inner frame. The logic to decide this * is here. */ NS_IMETHOD IR_TargetIsMe(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, OuterTableReflowState& aReflowState, nsReflowStatus& aStatus); /** pass along the incremental reflow command to the inner table. */ NS_IMETHOD IR_InnerTableReflow(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, OuterTableReflowState& aReflowState, nsReflowStatus& aStatus); /** handle incremental reflow notification that a caption was inserted. */ NS_IMETHOD IR_CaptionInserted(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, OuterTableReflowState& aReflowState, nsReflowStatus& aStatus, nsIFrame * aCaptionFrame, PRBool aReplace); /** handle incremental reflow notification that a caption was deleted. */ NS_IMETHOD IR_CaptionRemoved(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, OuterTableReflowState& aReflowState, nsReflowStatus& aStatus); /** handle incremental reflow notification that the caption style was changed * such that it is now left|right instead of top|bottom, or vice versa. */ PRBool IR_CaptionChangedAxis(const nsStyleText* aOldStyle, const nsStyleText* aNewStyle) const; /** set the size and the location of both the inner table frame and the caption. */ NS_IMETHOD SizeAndPlaceChildren(const nsSize & aInnerSize, const nsSize & aCaptionSize, OuterTableReflowState& aReflowState); // end Incremental Reflow methods private: /** used to keep track of this frame's children */ nsIFrame *mInnerTableFrame; nsIFrame *mCaptionFrame; /** used to track caption max element size */ PRInt32 mMinCaptionWidth; nsSize mMaxElementSize; }; inline nscoord nsTableOuterFrame::GetMinCaptionWidth() { return mMinCaptionWidth; } inline PRIntn nsTableOuterFrame::GetSkipSides() const { return 0; } #endif