зеркало из https://github.com/mozilla/pjs.git
245 строки
10 KiB
C++
245 строки
10 KiB
C++
/* -*- 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').
|
|
* <P> 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;
|
|
|
|
/** SetSelected needs to be overridden to talk to inner tableframe
|
|
*/
|
|
NS_IMETHOD nsTableOuterFrame::SetSelected(nsIDOMRange *aRange,PRBool aSelected, nsSpread aSpread);
|
|
|
|
/** 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
|
|
|
|
|
|
|