268 lines
7.8 KiB
C++
268 lines
7.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsHTMLParts.h"
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#include "nsContainerFrame.h"
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#include "nsCSSRendering.h"
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#include "nsIDocument.h"
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#include "nsIReflowCommand.h"
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#include "nsIPresContext.h"
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#include "nsIStyleContext.h"
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#include "nsViewsCID.h"
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#include "nsIView.h"
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#include "nsIViewManager.h"
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#include "nsIWidget.h"
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#include "nsHTMLIIDs.h"
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#include "nsPageFrame.h"
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#include "nsIRenderingContext.h"
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#include "nsGUIEvent.h"
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#include "nsIDOMEvent.h"
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#include "nsStyleConsts.h"
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#include "nsIViewManager.h"
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#include "nsHTMLAtoms.h"
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#include "nsIEventStateManager.h"
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#include "nsIDeviceContext.h"
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#include "nsIScrollableView.h"
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#include "nsLayoutAtoms.h"
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#include "nsIPresShell.h"
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#include "nsBoxFrame.h"
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#include "nsStackLayout.h"
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// Interface IDs
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static NS_DEFINE_IID(kScrollViewIID, NS_ISCROLLABLEVIEW_IID);
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static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
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//#define DEBUG_REFLOW
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class nsRootBoxFrame : public nsBoxFrame {
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public:
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friend nsresult NS_NewBoxFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
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nsRootBoxFrame(nsIPresShell* aShell);
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NS_IMETHOD AppendFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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NS_IMETHOD RemoveFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame);
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NS_IMETHOD Reflow(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD HandleEvent(nsIPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus);
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NS_IMETHOD GetFrameForPoint(nsIPresContext* aPresContext,
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const nsPoint& aPoint,
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nsFramePaintLayer aWhichLayer,
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nsIFrame** aFrame);
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/**
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* Get the "type" of the frame
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*
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* @see nsLayoutAtoms::rootFrame
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*/
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsString& aResult) const;
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NS_IMETHOD SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
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#endif
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};
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//----------------------------------------------------------------------
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nsresult
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NS_NewRootBoxFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
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{
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NS_PRECONDITION(aNewFrame, "null OUT ptr");
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if (nsnull == aNewFrame) {
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return NS_ERROR_NULL_POINTER;
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}
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nsRootBoxFrame* it = new (aPresShell) nsRootBoxFrame (aPresShell);
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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*aNewFrame = it;
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return NS_OK;
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}
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nsRootBoxFrame::nsRootBoxFrame(nsIPresShell* aShell):nsBoxFrame(aShell, PR_TRUE)
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{
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nsCOMPtr<nsIBoxLayout> layout;
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NS_NewStackLayout(aShell, layout);
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SetLayoutManager(layout);
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}
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NS_IMETHODIMP
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nsRootBoxFrame::AppendFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aFrameList)
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{
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nsresult rv;
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NS_ASSERTION(!aListName, "unexpected child list name");
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NS_PRECONDITION(mFrames.IsEmpty(), "already have a child frame");
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if (aListName) {
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// We only support unnamed principal child list
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rv = NS_ERROR_INVALID_ARG;
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} else if (!mFrames.IsEmpty()) {
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// We only allow a single child frame
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rv = NS_ERROR_FAILURE;
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} else {
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rv = nsBoxFrame::AppendFrames(aPresContext, aPresShell, aListName, aFrameList);
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}
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return rv;
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}
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NS_IMETHODIMP
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nsRootBoxFrame::InsertFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList)
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{
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nsresult rv;
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// Because we only support a single child frame inserting is the same
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// as appending
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NS_PRECONDITION(!aPrevFrame, "unexpected previous sibling frame");
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if (aPrevFrame) {
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rv = NS_ERROR_UNEXPECTED;
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} else {
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rv = AppendFrames(aPresContext, aPresShell, aListName, aFrameList);
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}
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return rv;
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}
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NS_IMETHODIMP
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nsRootBoxFrame::RemoveFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame)
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{
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nsresult rv;
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NS_ASSERTION(!aListName, "unexpected child list name");
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if (aListName) {
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// We only support the unnamed principal child list
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rv = NS_ERROR_INVALID_ARG;
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} else if (aOldFrame == mFrames.FirstChild()) {
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rv = nsBoxFrame::RemoveFrame(aPresContext, aPresShell, aListName, aOldFrame);
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} else {
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rv = NS_ERROR_FAILURE;
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}
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return rv;
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}
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#ifdef DEBUG_REFLOW
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PRInt32 gReflows = 0;
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#endif
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NS_IMETHODIMP
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nsRootBoxFrame::Reflow(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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DO_GLOBAL_REFLOW_COUNT("nsRootBoxFrame", aReflowState.reason);
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#ifdef DEBUG_REFLOW
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gReflows++;
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printf("----Reflow %d----\n", gReflows);
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#endif
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return nsBoxFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
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}
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NS_IMETHODIMP
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nsRootBoxFrame::HandleEvent(nsIPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus)
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{
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NS_ENSURE_ARG_POINTER(aEventStatus);
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if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
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return NS_OK;
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}
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if (aEvent->message == NS_MOUSE_LEFT_BUTTON_UP ||
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aEvent->message == NS_MOUSE_MIDDLE_BUTTON_UP ||
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aEvent->message == NS_MOUSE_RIGHT_BUTTON_UP) {
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nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsRootBoxFrame::GetFrameForPoint(nsIPresContext* aPresContext,
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const nsPoint& aPoint,
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nsFramePaintLayer aWhichLayer,
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nsIFrame** aFrame)
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{
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// this should act like a block, so we need to override
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return nsBoxFrame::GetFrameForPoint(aPresContext, aPoint, aWhichLayer, aFrame);
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}
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NS_IMETHODIMP
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nsRootBoxFrame::GetFrameType(nsIAtom** aType) const
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{
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NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer");
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*aType = nsLayoutAtoms::rootFrame;
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NS_ADDREF(*aType);
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return NS_OK;
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}
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#ifdef DEBUG
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NS_IMETHODIMP
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nsRootBoxFrame::GetFrameName(nsString& aResult) const
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{
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return MakeFrameName("RootBox", aResult);
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}
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NS_IMETHODIMP
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nsRootBoxFrame::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
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{
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if (!aResult) {
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return NS_ERROR_NULL_POINTER;
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}
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*aResult = sizeof(*this);
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return NS_OK;
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}
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#endif
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