936 lines
27 KiB
C++
936 lines
27 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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* Author: Eric D Vaughan <evaughan@netscape.com>
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.com>
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* Dan Rosen <dr@netscape.com>
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*/
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#include "nsCOMPtr.h"
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#include "nsHTMLParts.h"
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#include "nsIPresContext.h"
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#include "nsIStyleContext.h"
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#include "nsIReflowCommand.h"
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#include "nsIDeviceContext.h"
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#include "nsPageFrame.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 "nsHTMLContainerFrame.h"
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#include "nsHTMLIIDs.h"
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#include "nsCSSRendering.h"
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#include "nsIScrollableView.h"
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#include "nsWidgetsCID.h"
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#include "nsScrollBoxFrame.h"
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#include "nsLayoutAtoms.h"
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#include "nsIBox.h"
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#include "nsBoxLayoutState.h"
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#include "nsIBoxToBlockAdaptor.h"
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#include "nsIScrollbarMediator.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIPresState.h"
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#include "nsButtonBoxFrame.h"
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#include "nsITimerCallback.h"
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#include "nsRepeatService.h"
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static NS_DEFINE_IID(kWidgetCID, NS_CHILD_CID);
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static NS_DEFINE_IID(kScrollBoxViewCID, NS_SCROLL_PORT_VIEW_CID);
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static NS_DEFINE_IID(kViewCID, NS_VIEW_CID);
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//----------------------------------------------------------------------
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nsresult
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NS_NewScrollBoxFrame(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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nsScrollBoxFrame* it = new (aPresShell) nsScrollBoxFrame (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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nsScrollBoxFrame::nsScrollBoxFrame(nsIPresShell* aShell):nsBoxFrame(aShell), mVerticalOverflow(PR_FALSE), mHorizontalOverflow(PR_FALSE),
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mRestoreRect(-1, -1, -1, -1),
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mLastPos(-1, -1)
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{
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}
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PRBool
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nsScrollBoxFrame::NeedsClipWidget()
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{
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return PR_TRUE;
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}
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NS_IMETHODIMP
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nsScrollBoxFrame::Init(nsIPresContext* aPresContext,
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nsIContent* aContent,
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nsIFrame* aParent,
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nsIStyleContext* aStyleContext,
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nsIFrame* aPrevInFlow)
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{
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nsresult rv = nsBoxFrame::Init(aPresContext, aContent,
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aParent, aStyleContext,
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aPrevInFlow);
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// Create the scrolling view
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CreateScrollingView(aPresContext);
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return rv;
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}
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NS_IMETHODIMP
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nsScrollBoxFrame::SetInitialChildList(nsIPresContext* aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList)
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{
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nsresult rv = nsBoxFrame::SetInitialChildList(aPresContext, aListName,
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aChildList);
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SetUpScrolledFrame(aPresContext);
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return rv;
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}
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void
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nsScrollBoxFrame::SetUpScrolledFrame(nsIPresContext* aPresContext)
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{
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NS_ASSERTION(mFrames.GetLength() <= 1, "ScrollBoxes can only have 1 child!");
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nsIFrame* frame = mFrames.FirstChild();
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if (!frame)
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return;
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// create a view if we don't already have one.
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nsCOMPtr<nsIStyleContext> context;
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frame->GetStyleContext(getter_AddRefs(context));
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nsHTMLContainerFrame::CreateViewForFrame(aPresContext, frame,
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context, nsnull, PR_TRUE);
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// We need to allow the view's position to be different than the
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// frame's position
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nsFrameState state;
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frame->GetFrameState(&state);
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state &= ~NS_FRAME_SYNC_FRAME_AND_VIEW;
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frame->SetFrameState(state);
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}
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NS_IMETHODIMP
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nsScrollBoxFrame::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 = nsBoxFrame::AppendFrames(aPresContext, aPresShell, aListName, aFrameList);
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#ifdef DEBUG
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// make sure we only have 1 child.
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nsIFrame* frame = mFrames.FirstChild();
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frame->GetNextSibling(&frame);
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NS_ASSERTION(!frame, "Error ScrollBoxes can only have 1 child");
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#endif
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SetUpScrolledFrame(aPresContext);
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return rv;
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}
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NS_IMETHODIMP
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nsScrollBoxFrame::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 = nsBoxFrame::InsertFrames(aPresContext, aPresShell, aListName, aPrevFrame, aFrameList);
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#ifdef DEBUG
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// make sure we only have 1 child.
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nsIFrame* frame = mFrames.FirstChild();
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frame->GetNextSibling(&frame);
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NS_ASSERTION(!frame, "Error ScrollBoxes can only have 1 child");
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#endif
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SetUpScrolledFrame(aPresContext);
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return rv;
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}
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NS_IMETHODIMP
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nsScrollBoxFrame::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 = nsBoxFrame::RemoveFrame(aPresContext, aPresShell, aListName, aOldFrame);
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SetUpScrolledFrame(aPresContext);
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return rv;
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}
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nsresult
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nsScrollBoxFrame::CreateScrollingViewWidget(nsIView* aView, const nsStyleDisplay* aDisplay)
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{
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nsresult rv = NS_OK;
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// If it's fixed positioned, then create a widget
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if (NS_STYLE_POSITION_FIXED == aDisplay->mPosition) {
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rv = aView->CreateWidget(kWidgetCID);
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}
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return(rv);
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}
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nsresult
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nsScrollBoxFrame::GetScrollingParentView(nsIPresContext* aPresContext,
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nsIFrame* aParent,
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nsIView** aParentView)
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{
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nsresult rv = aParent->GetView(aPresContext, aParentView);
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NS_ASSERTION(aParentView, "GetParentWithView failed");
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return(rv);
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}
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nsresult
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nsScrollBoxFrame::CreateScrollingView(nsIPresContext* aPresContext)
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{
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nsIView* view;
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//Get parent frame
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nsIFrame* parent;
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GetParentWithView(aPresContext, &parent);
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NS_ASSERTION(parent, "GetParentWithView failed");
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// Get parent view
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nsIView* parentView = nsnull;
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GetScrollingParentView(aPresContext, parent, &parentView);
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// Get the view manager
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nsIViewManager* viewManager;
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parentView->GetViewManager(viewManager);
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// Create the scrolling view
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nsresult rv = nsComponentManager::CreateInstance(kScrollBoxViewCID,
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nsnull,
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NS_GET_IID(nsIView),
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(void **)&view);
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if (NS_OK == rv) {
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const nsStyleDisplay* display = (const nsStyleDisplay*)
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mStyleContext->GetStyleData(eStyleStruct_Display);
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const nsStylePosition* position = (const nsStylePosition*)
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mStyleContext->GetStyleData(eStyleStruct_Position);
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const nsStyleBorder* borderStyle = (const nsStyleBorder*)
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mStyleContext->GetStyleData(eStyleStruct_Border);
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const nsStyleVisibility* vis =
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(const nsStyleVisibility*)mStyleContext->GetStyleData(eStyleStruct_Visibility);
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// Get the z-index
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PRInt32 zIndex = 0;
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if (eStyleUnit_Integer == position->mZIndex.GetUnit()) {
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zIndex = position->mZIndex.GetIntValue();
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}
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// Initialize the scrolling view
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view->Init(viewManager, mRect, parentView, vis->IsVisibleOrCollapsed() ?
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nsViewVisibility_kShow : nsViewVisibility_kHide);
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// Insert the view into the view hierarchy
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viewManager->InsertChild(parentView, view, zIndex);
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// Set the view's opacity
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viewManager->SetViewOpacity(view, vis->mOpacity);
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// Because we only paint the border and we don't paint a background,
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// inform the view manager that we have transparent content
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viewManager->SetViewContentTransparency(view, PR_TRUE);
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// If it's fixed positioned, then create a widget too
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CreateScrollingViewWidget(view, display);
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// Get the nsIScrollableView interface
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nsIScrollableView* scrollingView;
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view->QueryInterface(NS_GET_IID(nsIScrollableView), (void**)&scrollingView);
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scrollingView->SetScrollPreference(nsScrollPreference_kNeverScroll);
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// Have the scrolling view create its internal widgets
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if (NeedsClipWidget()) {
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scrollingView->CreateScrollControls();
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}
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// Set the scrolling view's insets to whatever our border is
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nsMargin border;
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if (!borderStyle->GetBorder(border)) {
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NS_NOTYETIMPLEMENTED("percentage border");
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border.SizeTo(0, 0, 0, 0);
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}
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scrollingView->SetControlInsets(border);
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// Remember our view
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SetView(aPresContext, view);
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}
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NS_RELEASE(viewManager);
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return rv;
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}
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NS_IMETHODIMP
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nsScrollBoxFrame::GetMargin(nsMargin& aMargin)
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{
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aMargin.SizeTo(0,0,0,0);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsScrollBoxFrame::GetPadding(nsMargin& aMargin)
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{
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aMargin.SizeTo(0,0,0,0);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsScrollBoxFrame::GetBorder(nsMargin& aMargin)
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{
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aMargin.SizeTo(0,0,0,0);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsScrollBoxFrame::DoLayout(nsBoxLayoutState& aState)
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{
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PRUint32 oldflags = 0;
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aState.GetLayoutFlags(oldflags);
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nsRect clientRect(0,0,0,0);
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GetClientRect(clientRect);
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nsIBox* kid = nsnull;
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GetChildBox(&kid);
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nsRect childRect(clientRect);
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nsMargin margin(0,0,0,0);
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kid->GetMargin(margin);
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childRect.Deflate(margin);
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nsIPresContext* presContext = aState.GetPresContext();
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// see if our child is html. If it is then
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// never include the overflow. The child will be the size
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// given but its view will include the overflow size.
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nsCOMPtr<nsIBoxToBlockAdaptor> adaptor = do_QueryInterface(kid);
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if (adaptor)
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adaptor->SetIncludeOverflow(PR_FALSE);
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PRInt32 flags = NS_FRAME_NO_MOVE_VIEW;
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// do we have an adaptor? No then we can't use
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// min size the child technically can get as small as it wants
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// to.
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if (!adaptor) {
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nsSize min(0,0);
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kid->GetMinSize(aState, min);
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if (min.height > childRect.height)
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childRect.height = min.height;
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if (min.width > childRect.width)
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childRect.width = min.width;
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} else {
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// don't size the view if we have an adaptor
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flags |= NS_FRAME_NO_SIZE_VIEW;
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}
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aState.SetLayoutFlags(flags);
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kid->SetBounds(aState, childRect);
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kid->Layout(aState);
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kid->GetBounds(childRect);
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clientRect.Inflate(margin);
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// now size the view to the size including our overflow.
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if (adaptor) {
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nsSize overflow(0,0);
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adaptor->GetOverflow(overflow);
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childRect.width = overflow.width;
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childRect.height = overflow.height;
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}
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if (childRect.width < clientRect.width || childRect.height < clientRect.height)
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{
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if (childRect.width < clientRect.width)
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childRect.width = clientRect.width;
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if (childRect.height < clientRect.height)
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childRect.height = clientRect.height;
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clientRect.Deflate(margin);
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kid->SetBounds(aState, childRect);
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}
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aState.SetLayoutFlags(oldflags);
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SyncLayout(aState);
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if (adaptor) {
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nsIView* view;
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nsIFrame* frame;
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kid->GetFrame(&frame);
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frame->GetView(presContext, &view);
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nsCOMPtr<nsIViewManager> vm;
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view->GetViewManager(*getter_AddRefs(vm));
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vm->ResizeView(view, childRect.width, childRect.height);
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}
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nsIScrollableView* scrollingView;
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nsIView* view;
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GetView(presContext, &view);
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if (NS_SUCCEEDED(view->QueryInterface(NS_GET_IID(nsIScrollableView), (void**)&scrollingView))) {
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scrollingView->ComputeScrollOffsets(PR_TRUE);
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}
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nsRect scrollPort;
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GetBounds(scrollPort);
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kid->GetBounds(childRect);
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// first see what changed
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PRBool vertChanged = PR_FALSE;
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PRBool horizChanged = PR_FALSE;
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if (mVerticalOverflow && childRect.height <= scrollPort.height) {
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mVerticalOverflow = PR_FALSE;
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vertChanged = PR_TRUE;
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} else if (childRect.height > scrollPort.height) {
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if (!mVerticalOverflow) {
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mVerticalOverflow = PR_TRUE;
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}
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vertChanged = PR_TRUE;
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}
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if (mHorizontalOverflow && childRect.width <= scrollPort.width) {
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mHorizontalOverflow = PR_FALSE;
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horizChanged = PR_TRUE;
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} else if (childRect.width > scrollPort.width) {
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if (!mHorizontalOverflow) {
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mHorizontalOverflow = PR_TRUE;
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}
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horizChanged = PR_TRUE;
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}
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nsCOMPtr<nsIPresShell> shell;
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aState.GetPresShell(getter_AddRefs(shell));
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// if either changed
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if (vertChanged || horizChanged)
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{
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// are there 2 events or 1?
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if (vertChanged && horizChanged) {
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if (mVerticalOverflow == mHorizontalOverflow)
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{
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// both either overflowed or underflowed. 1 event
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PostScrollPortEvent(shell, mVerticalOverflow, nsScrollPortEvent::both);
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} else {
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// one overflowed and one underflowed
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PostScrollPortEvent(shell, mVerticalOverflow, nsScrollPortEvent::vertical);
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PostScrollPortEvent(shell, mHorizontalOverflow, nsScrollPortEvent::horizontal);
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}
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} else if (vertChanged) // only one changed either vert or horiz
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PostScrollPortEvent(shell, mVerticalOverflow, nsScrollPortEvent::vertical);
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else
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PostScrollPortEvent(shell, mHorizontalOverflow, nsScrollPortEvent::horizontal);
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}
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|
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/**
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* this code is resposible for restoring the scroll position back to some
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* saved positon. if the user has not moved the scroll position manually
|
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* we keep scrolling down until we get to our orignally position. keep in
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* mind that content could incrementally be coming in. we only want to stop
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* when we reach our new position.
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*/
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|
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if ((mRestoreRect.y != -1) &&
|
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(mLastPos.x != -1) &&
|
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(mLastPos.y != -1)) {
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|
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// make sure our scroll position did not change for where we last put
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// it. if it does then the user must have moved it, and we no longer
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// need to restore.
|
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nsIPresContext* presContext = aState.GetPresContext();
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nsIView* view;
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GetView(presContext, &view);
|
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if (!view)
|
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return NS_OK; // don't freak out if we have no view
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|
|
nsCOMPtr<nsIScrollableView> scrollingView(do_QueryInterface(view));
|
|
if (scrollingView) {
|
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nscoord x = 0;
|
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nscoord y = 0;
|
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scrollingView->GetScrollPosition(x, y);
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|
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// if we didn't move, we still need to restore
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if ((x == mLastPos.x) && (y == mLastPos.y)) {
|
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nsRect childRect(0, 0, 0, 0);
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nsIView* child = nsnull;
|
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nsresult rv = scrollingView->GetScrolledView(child);
|
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if (NS_SUCCEEDED(rv) && child)
|
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child->GetBounds(childRect);
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|
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PRInt32 cx, cy, x, y;
|
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scrollingView->GetScrollPosition(cx,cy);
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|
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x = (int)
|
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(((float)childRect.width / mRestoreRect.width) * mRestoreRect.x);
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y = (int)
|
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(((float)childRect.height / mRestoreRect.height) * mRestoreRect.y);
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|
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// if our position is greater than the scroll position, scroll.
|
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// remember that we could be incrementally loading so we may enter
|
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// and scroll many times.
|
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if ((y > cy) || (x > cx)) {
|
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scrollingView->ScrollTo(x, y, 0);
|
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// scrollpostion goes from twips to pixels. this fixes any roundoff
|
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// problems.
|
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scrollingView->GetScrollPosition(mLastPos.x, mLastPos.y);
|
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}
|
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else {
|
|
// if we reached the position then stop
|
|
mRestoreRect.y = -1;
|
|
mLastPos.x = -1;
|
|
mLastPos.y = -1;
|
|
}
|
|
}
|
|
else {
|
|
// user moved the position, so we won't need to restore
|
|
mLastPos.x = -1;
|
|
mLastPos.y = -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsScrollBoxFrame::PostScrollPortEvent(nsIPresShell* aShell, PRBool aOverflow, nsScrollPortEvent::orientType aType)
|
|
{
|
|
if (!mContent)
|
|
return;
|
|
|
|
nsScrollPortEvent* event = new nsScrollPortEvent();
|
|
event->eventStructType = NS_SCROLLPORT_EVENT;
|
|
event->widget = nsnull;
|
|
event->orient = aType;
|
|
event->nativeMsg = nsnull;
|
|
event->message = aOverflow ? NS_SCROLLPORT_OVERFLOW : NS_SCROLLPORT_UNDERFLOW;
|
|
|
|
aShell->PostDOMEvent(mContent, event);
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsScrollBoxFrame::GetAscent(nsBoxLayoutState& aState, nscoord& aAscent)
|
|
{
|
|
aAscent = 0;
|
|
nsIBox* child = nsnull;
|
|
GetChildBox(&child);
|
|
nsresult rv = child->GetAscent(aState, aAscent);
|
|
nsMargin m(0,0,0,0);
|
|
GetBorderAndPadding(m);
|
|
aAscent += m.top;
|
|
GetMargin(m);
|
|
aAscent += m.top;
|
|
GetInset(m);
|
|
aAscent += m.top;
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsScrollBoxFrame::GetPrefSize(nsBoxLayoutState& aBoxLayoutState, nsSize& aSize)
|
|
{
|
|
nsIBox* child = nsnull;
|
|
GetChildBox(&child);
|
|
nsresult rv = child->GetPrefSize(aBoxLayoutState, aSize);
|
|
AddMargin(child, aSize);
|
|
AddBorderAndPadding(aSize);
|
|
AddInset(aSize);
|
|
nsIBox::AddCSSPrefSize(aBoxLayoutState, this, aSize);
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsScrollBoxFrame::GetMinSize(nsBoxLayoutState& aBoxLayoutState, nsSize& aSize)
|
|
{
|
|
aSize.width = 0;
|
|
aSize.height = 0;
|
|
AddBorderAndPadding(aSize);
|
|
AddInset(aSize);
|
|
nsIBox::AddCSSMinSize(aBoxLayoutState, this, aSize);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsScrollBoxFrame::GetMaxSize(nsBoxLayoutState& aBoxLayoutState, nsSize& aSize)
|
|
{
|
|
nsIBox* child = nsnull;
|
|
GetChildBox(&child);
|
|
nsresult rv = child->GetMaxSize(aBoxLayoutState, aSize);
|
|
AddMargin(child, aSize);
|
|
AddBorderAndPadding(aSize);
|
|
AddInset(aSize);
|
|
nsIBox::AddCSSMaxSize(aBoxLayoutState, this, aSize);
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsScrollBoxFrame::Paint(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer,
|
|
PRUint32 aFlags)
|
|
{
|
|
if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
|
|
// Only paint the border and background if we're visible
|
|
const nsStyleVisibility* vis =
|
|
(const nsStyleVisibility*)mStyleContext->GetStyleData(eStyleStruct_Visibility);
|
|
|
|
if (vis->IsVisibleOrCollapsed()) {
|
|
// Paint our border only (no background)
|
|
const nsStyleBorder* border = (const nsStyleBorder*)
|
|
mStyleContext->GetStyleData(eStyleStruct_Border);
|
|
|
|
nsRect rect(0, 0, mRect.width, mRect.height);
|
|
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
|
|
aDirtyRect, rect, *border, mStyleContext, 0);
|
|
}
|
|
}
|
|
|
|
// Paint our children
|
|
nsresult rv = nsBoxFrame::Paint(aPresContext, aRenderingContext, aDirtyRect,
|
|
aWhichLayer);
|
|
|
|
// Call nsFrame::Paint to draw selection border when appropriate
|
|
return nsFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
|
|
}
|
|
|
|
PRIntn
|
|
nsScrollBoxFrame::GetSkipSides() const
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
nsresult
|
|
nsScrollBoxFrame::GetContentOf(nsIContent** aContent)
|
|
{
|
|
return GetContent(aContent);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsScrollBoxFrame::GetFrameType(nsIAtom** aType) const
|
|
{
|
|
NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer");
|
|
*aType = nsLayoutAtoms::scrollFrame;
|
|
NS_ADDREF(*aType);
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef NS_DEBUG
|
|
NS_IMETHODIMP
|
|
nsScrollBoxFrame::GetFrameName(nsString& aResult) const
|
|
{
|
|
return MakeFrameName("ScrollBox", aResult);
|
|
}
|
|
#endif
|
|
|
|
NS_IMETHODIMP_(nsrefcnt)
|
|
nsScrollBoxFrame::AddRef(void)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP_(nsrefcnt)
|
|
nsScrollBoxFrame::Release(void)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsIStatefulFrame
|
|
//----------------------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsScrollBoxFrame::SaveState(nsIPresContext* aPresContext,
|
|
nsIPresState** aState)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aState);
|
|
|
|
nsCOMPtr<nsIScrollbarMediator> mediator;
|
|
nsIFrame* first = mFrames.FirstChild();
|
|
mediator = do_QueryInterface(first);
|
|
if (mediator) {
|
|
// Child manages its own scrolling. Bail.
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIPresState> state;
|
|
nsresult res = NS_OK;
|
|
|
|
nsIView* view;
|
|
GetView(aPresContext, &view);
|
|
NS_ENSURE_TRUE(view, NS_ERROR_FAILURE);
|
|
|
|
PRInt32 x,y;
|
|
nsIScrollableView* scrollingView;
|
|
res = view->QueryInterface(NS_GET_IID(nsIScrollableView), (void**)&scrollingView);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
scrollingView->GetScrollPosition(x,y);
|
|
|
|
// Don't save scroll position if we are at (0,0)
|
|
if (x || y) {
|
|
|
|
nsIView* child = nsnull;
|
|
scrollingView->GetScrolledView(child);
|
|
NS_ENSURE_TRUE(child, NS_ERROR_FAILURE);
|
|
|
|
nsRect childRect(0,0,0,0);
|
|
child->GetBounds(childRect);
|
|
|
|
res = NS_NewPresState(getter_AddRefs(state));
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
|
|
nsCOMPtr<nsISupportsPRInt32> xoffset;
|
|
nsComponentManager::CreateInstance(NS_SUPPORTS_PRINT32_CONTRACTID,
|
|
nsnull, NS_GET_IID(nsISupportsPRInt32), (void**)getter_AddRefs(xoffset));
|
|
if (xoffset) {
|
|
res = xoffset->SetData(x);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
state->SetStatePropertyAsSupports(NS_ConvertASCIItoUCS2("x-offset"), xoffset);
|
|
}
|
|
|
|
nsCOMPtr<nsISupportsPRInt32> yoffset;
|
|
nsComponentManager::CreateInstance(NS_SUPPORTS_PRINT32_CONTRACTID,
|
|
nsnull, NS_GET_IID(nsISupportsPRInt32), (void**)getter_AddRefs(yoffset));
|
|
if (yoffset) {
|
|
res = yoffset->SetData(y);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
state->SetStatePropertyAsSupports(NS_ConvertASCIItoUCS2("y-offset"), yoffset);
|
|
}
|
|
|
|
nsCOMPtr<nsISupportsPRInt32> width;
|
|
nsComponentManager::CreateInstance(NS_SUPPORTS_PRINT32_CONTRACTID,
|
|
nsnull, NS_GET_IID(nsISupportsPRInt32), (void**)getter_AddRefs(width));
|
|
if (width) {
|
|
res = width->SetData(childRect.width);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
state->SetStatePropertyAsSupports(NS_ConvertASCIItoUCS2("width"), width);
|
|
}
|
|
|
|
nsCOMPtr<nsISupportsPRInt32> height;
|
|
nsComponentManager::CreateInstance(NS_SUPPORTS_PRINT32_CONTRACTID,
|
|
nsnull, NS_GET_IID(nsISupportsPRInt32), (void**)getter_AddRefs(height));
|
|
if (height) {
|
|
res = height->SetData(childRect.height);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
state->SetStatePropertyAsSupports(NS_ConvertASCIItoUCS2("height"), height);
|
|
}
|
|
*aState = state;
|
|
NS_ADDREF(*aState);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
//-----------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsScrollBoxFrame::RestoreState(nsIPresContext* aPresContext,
|
|
nsIPresState* aState)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aState);
|
|
|
|
nsCOMPtr<nsISupportsPRInt32> xoffset;
|
|
nsCOMPtr<nsISupportsPRInt32> yoffset;
|
|
nsCOMPtr<nsISupportsPRInt32> width;
|
|
nsCOMPtr<nsISupportsPRInt32> height;
|
|
aState->GetStatePropertyAsSupports(NS_ConvertASCIItoUCS2("x-offset"), getter_AddRefs(xoffset));
|
|
aState->GetStatePropertyAsSupports(NS_ConvertASCIItoUCS2("y-offset"), getter_AddRefs(yoffset));
|
|
aState->GetStatePropertyAsSupports(NS_ConvertASCIItoUCS2("width"), getter_AddRefs(width));
|
|
aState->GetStatePropertyAsSupports(NS_ConvertASCIItoUCS2("height"), getter_AddRefs(height));
|
|
|
|
nsresult res = NS_ERROR_NULL_POINTER;
|
|
if (xoffset && yoffset) {
|
|
PRInt32 x,y,w,h;
|
|
res = xoffset->GetData(&x);
|
|
if (NS_SUCCEEDED(res))
|
|
res = yoffset->GetData(&y);
|
|
if (NS_SUCCEEDED(res))
|
|
res = width->GetData(&w);
|
|
if (NS_SUCCEEDED(res))
|
|
res = height->GetData(&h);
|
|
|
|
mLastPos.x = -1;
|
|
mLastPos.y = -1;
|
|
mRestoreRect.SetRect(-1, -1, -1, -1);
|
|
|
|
// don't do it now, store it later and do it in layout.
|
|
if (NS_SUCCEEDED(res)) {
|
|
mRestoreRect.SetRect(x, y, w, h);
|
|
nsIView* view;
|
|
GetView(aPresContext, &view);
|
|
if (!view)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIScrollableView> scrollingView(do_QueryInterface(view));
|
|
if (scrollingView)
|
|
scrollingView->GetScrollPosition(mLastPos.x, mLastPos.y);
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
NS_INTERFACE_MAP_BEGIN(nsScrollBoxFrame)
|
|
NS_INTERFACE_MAP_ENTRY(nsIBox)
|
|
NS_INTERFACE_MAP_ENTRY(nsIStatefulFrame)
|
|
#ifdef NS_DEBUG
|
|
NS_INTERFACE_MAP_ENTRY(nsIFrameDebug)
|
|
#endif
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIBox)
|
|
NS_INTERFACE_MAP_END_INHERITING(nsBoxFrame)
|
|
|
|
|
|
class nsAutoRepeatBoxFrame : public nsButtonBoxFrame,
|
|
public nsITimerCallback
|
|
{
|
|
public:
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
|
|
nsAutoRepeatBoxFrame(nsIPresShell* aPresShell);
|
|
friend nsresult NS_NewAutoRepeatBoxFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
|
|
|
|
NS_IMETHOD Destroy(nsIPresContext* aPresContext);
|
|
|
|
NS_IMETHOD HandleEvent(nsIPresContext* aPresContext,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus);
|
|
|
|
NS_IMETHOD Init(nsIPresContext* aPresContext,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParent,
|
|
nsIStyleContext* aContext,
|
|
nsIFrame* aPrevInFlow);
|
|
|
|
NS_IMETHOD_(void) Notify(nsITimer *timer);
|
|
|
|
nsIPresContext* mPresContext;
|
|
|
|
};
|
|
|
|
nsresult
|
|
NS_NewAutoRepeatBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame )
|
|
{
|
|
NS_PRECONDITION(aNewFrame, "null OUT ptr");
|
|
if (nsnull == aNewFrame) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
nsAutoRepeatBoxFrame* it = new (aPresShell) nsAutoRepeatBoxFrame (aPresShell);
|
|
if (nsnull == it)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
*aNewFrame = it;
|
|
return NS_OK;
|
|
|
|
} // NS_NewScrollBarButtonFrame
|
|
|
|
|
|
nsAutoRepeatBoxFrame::nsAutoRepeatBoxFrame(nsIPresShell* aPresShell)
|
|
:nsButtonBoxFrame(aPresShell)
|
|
{
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsAutoRepeatBoxFrame::Init(nsIPresContext* aPresContext,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParent,
|
|
nsIStyleContext* aContext,
|
|
nsIFrame* aPrevInFlow)
|
|
{
|
|
mPresContext = aPresContext;
|
|
return nsButtonBoxFrame::Init(aPresContext, aContent, aParent, aContext, aPrevInFlow);
|
|
}
|
|
|
|
NS_INTERFACE_MAP_BEGIN(nsAutoRepeatBoxFrame)
|
|
NS_INTERFACE_MAP_ENTRY(nsITimerCallback)
|
|
NS_INTERFACE_MAP_END_INHERITING(nsButtonBoxFrame)
|
|
|
|
NS_IMPL_ADDREF_INHERITED(nsAutoRepeatBoxFrame, nsButtonBoxFrame)
|
|
NS_IMPL_RELEASE_INHERITED(nsAutoRepeatBoxFrame, nsButtonBoxFrame)
|
|
|
|
NS_IMETHODIMP
|
|
nsAutoRepeatBoxFrame::HandleEvent(nsIPresContext* aPresContext,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
switch(aEvent->message)
|
|
{
|
|
case NS_MOUSE_ENTER:
|
|
case NS_MOUSE_ENTER_SYNTH:
|
|
nsRepeatService::GetInstance()->Start(this);
|
|
break;
|
|
|
|
case NS_MOUSE_EXIT:
|
|
case NS_MOUSE_EXIT_SYNTH:
|
|
nsRepeatService::GetInstance()->Stop();
|
|
break;
|
|
}
|
|
|
|
return nsButtonBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
nsAutoRepeatBoxFrame::Notify(nsITimer *timer)
|
|
{
|
|
MouseClicked(mPresContext, nsnull);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsAutoRepeatBoxFrame::Destroy(nsIPresContext* aPresContext)
|
|
{
|
|
// Ensure our repeat service isn't going... it's possible that a scrollbar can disappear out
|
|
// from under you while you're in the process of scrolling.
|
|
nsRepeatService::GetInstance()->Stop();
|
|
return nsButtonBoxFrame::Destroy(aPresContext);
|
|
}
|