mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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606 lines
22 KiB
C++
606 lines
22 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/* rendering object to wrap rendering objects that should be scrollable */
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#ifndef nsGfxScrollFrame_h___
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#define nsGfxScrollFrame_h___
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#include "nsHTMLContainerFrame.h"
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#include "nsIAnonymousContentCreator.h"
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#include "nsBoxFrame.h"
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#include "nsIScrollableFrame.h"
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#include "nsIScrollPositionListener.h"
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#include "nsIStatefulFrame.h"
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#include "nsGUIEvent.h"
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#include "nsThreadUtils.h"
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#include "nsIScrollableView.h"
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#include "nsIView.h"
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#include "nsIReflowCallback.h"
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#include "nsBoxLayoutState.h"
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class nsPresContext;
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class nsIPresShell;
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class nsIContent;
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class nsIAtom;
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class nsIDocument;
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class nsIScrollFrameInternal;
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class nsPresState;
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struct ScrollReflowState;
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class nsGfxScrollFrameInner : public nsIScrollPositionListener,
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public nsIReflowCallback {
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public:
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NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
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NS_IMETHOD_(nsrefcnt) AddRef(void);
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NS_IMETHOD_(nsrefcnt) Release(void);
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nsGfxScrollFrameInner(nsContainerFrame* aOuter, PRBool aIsRoot,
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PRBool aIsXUL);
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~nsGfxScrollFrameInner();
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typedef nsIScrollableFrame::ScrollbarStyles ScrollbarStyles;
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ScrollbarStyles GetScrollbarStylesFromFrame() const;
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// If a child frame was added or removed on the scrollframe,
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// reload our child frame list.
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// We need this if a scrollbar frame is recreated.
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void ReloadChildFrames();
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PRBool NeedsClipWidget() const;
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void CreateScrollableView();
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nsresult CreateAnonymousContent(nsTArray<nsIContent*>& aElements);
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nsresult FireScrollPortEvent();
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void PostOverflowEvent();
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void Destroy();
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nsresult BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists);
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virtual void InvalidateInternal(const nsRect& aDamageRect, nscoord aX, nscoord aY,
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nsIFrame* aForChild, PRBool aImmediate);
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// nsIReflowCallback
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virtual PRBool ReflowFinished();
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virtual void ReflowCallbackCanceled();
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// nsIScrollPositionListener
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NS_IMETHOD ScrollPositionWillChange(nsIScrollableView* aScrollable, nscoord aX, nscoord aY);
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NS_IMETHOD ScrollPositionDidChange(nsIScrollableView* aScrollable, nscoord aX, nscoord aY);
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// This gets called when the 'curpos' attribute on one of the scrollbars changes
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void CurPosAttributeChanged(nsIContent* aChild);
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void PostScrollEvent();
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void FireScrollEvent();
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class ScrollEvent : public nsRunnable {
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public:
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NS_DECL_NSIRUNNABLE
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ScrollEvent(nsGfxScrollFrameInner *inner) : mInner(inner) {}
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void Revoke() { mInner = nsnull; }
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private:
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nsGfxScrollFrameInner *mInner;
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};
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class AsyncScrollPortEvent : public nsRunnable {
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public:
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NS_DECL_NSIRUNNABLE
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AsyncScrollPortEvent(nsGfxScrollFrameInner *inner) : mInner(inner) {}
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void Revoke() { mInner = nsnull; }
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private:
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nsGfxScrollFrameInner *mInner;
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};
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static void FinishReflowForScrollbar(nsIContent* aContent, nscoord aMinXY,
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nscoord aMaxXY, nscoord aCurPosXY,
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nscoord aPageIncrement,
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nscoord aIncrement);
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static void SetScrollbarEnabled(nsIContent* aContent, nscoord aMaxPos);
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static void SetCoordAttribute(nsIContent* aContent, nsIAtom* aAtom,
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nscoord aSize);
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nscoord GetCoordAttribute(nsIBox* aFrame, nsIAtom* atom, nscoord defaultValue);
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// Like ScrollPositionDidChange, but initiated by this frame rather than from the
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// scrolling view
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void InternalScrollPositionDidChange(nscoord aX, nscoord aY);
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nsIScrollableView* GetScrollableView() const { return mScrollableView; }
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nsIView* GetParentViewForChildFrame(nsIFrame* aFrame) const;
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void ScrollToRestoredPosition();
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nsPresState* SaveState(nsIStatefulFrame::SpecialStateID aStateID);
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void RestoreState(nsPresState* aState);
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void SaveVScrollbarStateToGlobalHistory();
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nsresult GetVScrollbarHintFromGlobalHistory(PRBool* aVScrollbarNeeded);
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nsIFrame* GetScrolledFrame() const { return mScrolledFrame; }
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void ScrollbarChanged(nsPresContext* aPresContext, nscoord aX, nscoord aY, PRUint32 aFlags);
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static void SetScrollbarVisibility(nsIBox* aScrollbar, PRBool aVisible);
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/**
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* GetScrolledRect is designed to encapsulate deciding which
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* directions of overflow should be reachable by scrolling and which
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* should not. Callers should NOT depend on it having any particular
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* behavior (although nsXULScrollFrame currently does).
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*
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* Currently it allows scrolling down and to the right for
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* nsHTMLScrollFrames with LTR directionality and for all
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* nsXULScrollFrames, and allows scrolling down and to the left for
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* nsHTMLScrollFrames with RTL directionality.
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*/
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nsRect GetScrolledRect(const nsSize& aScrollPortSize) const;
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nsSize GetScrollPortSize() const
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{
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return mScrollableView->View()->GetBounds().Size();
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}
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nsMargin GetActualScrollbarSizes() const;
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nsMargin GetDesiredScrollbarSizes(nsBoxLayoutState* aState);
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PRBool IsLTR() const;
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PRBool IsScrollbarOnRight() const;
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void LayoutScrollbars(nsBoxLayoutState& aState,
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const nsRect& aContentArea,
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const nsRect& aOldScrollArea,
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const nsRect& aScrollArea);
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// owning references to the nsIAnonymousContentCreator-built content
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nsCOMPtr<nsIContent> mHScrollbarContent;
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nsCOMPtr<nsIContent> mVScrollbarContent;
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nsCOMPtr<nsIContent> mScrollCornerContent;
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nsRevocableEventPtr<ScrollEvent> mScrollEvent;
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nsRevocableEventPtr<AsyncScrollPortEvent> mAsyncScrollPortEvent;
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nsIScrollableView* mScrollableView;
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nsIBox* mHScrollbarBox;
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nsIBox* mVScrollbarBox;
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nsIFrame* mScrolledFrame;
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nsIBox* mScrollCornerBox;
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nsContainerFrame* mOuter;
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nsRect mRestoreRect;
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nsPoint mLastPos;
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PRPackedBool mNeverHasVerticalScrollbar:1;
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PRPackedBool mNeverHasHorizontalScrollbar:1;
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PRPackedBool mHasVerticalScrollbar:1;
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PRPackedBool mHasHorizontalScrollbar:1;
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PRPackedBool mViewInitiatedScroll:1;
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PRPackedBool mFrameInitiatedScroll:1;
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PRPackedBool mDidHistoryRestore:1;
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// Is this the scrollframe for the document's viewport?
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PRPackedBool mIsRoot:1;
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// Is mOuter an nsXULScrollFrame?
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PRPackedBool mIsXUL:1;
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// If true, don't try to layout the scrollbars in Reflow(). This can be
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// useful if multiple passes are involved, because we don't want to place the
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// scrollbars at the wrong size.
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PRPackedBool mSupppressScrollbarUpdate:1;
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// If true, we skipped a scrollbar layout due to mSupppressScrollbarUpdate
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// being set at some point. That means we should lay out scrollbars even if
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// it might not strictly be needed next time mSupppressScrollbarUpdate is
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// false.
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PRPackedBool mSkippedScrollbarLayout:1;
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// Did we load a hint from global history
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// about whether a vertical scrollbar is required?
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PRPackedBool mDidLoadHistoryVScrollbarHint:1;
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// The value of the hint loaded
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PRPackedBool mHistoryVScrollbarHint:1;
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PRPackedBool mHadNonInitialReflow:1;
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// State used only by PostScrollEvents so we know
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// which overflow states have changed.
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PRPackedBool mHorizontalOverflow:1;
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PRPackedBool mVerticalOverflow:1;
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PRPackedBool mPostedReflowCallback:1;
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PRPackedBool mMayHaveDirtyFixedChildren:1;
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};
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/**
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* The scroll frame creates and manages the scrolling view
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*
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* It only supports having a single child frame that typically is an area
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* frame, but doesn't have to be. The child frame must have a view, though
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*
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* Scroll frames don't support incremental changes, i.e. you can't replace
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* or remove the scrolled frame
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*/
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class nsHTMLScrollFrame : public nsHTMLContainerFrame,
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public nsIScrollableFrame,
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public nsIAnonymousContentCreator,
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public nsIStatefulFrame {
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public:
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friend nsIFrame* NS_NewHTMLScrollFrame(nsIPresShell* aPresShell, nsStyleContext* aContext, PRBool aIsRoot);
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NS_DECL_ISUPPORTS
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// Called to set the child frames. We typically have three: the scroll area,
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// the vertical scrollbar, and the horizontal scrollbar.
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NS_IMETHOD SetInitialChildList(nsIAtom* aListName,
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nsIFrame* aChildList);
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NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists) {
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return mInner.BuildDisplayList(aBuilder, aDirtyRect, aLists);
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}
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PRBool TryLayout(ScrollReflowState* aState,
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nsHTMLReflowMetrics* aKidMetrics,
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PRBool aAssumeVScroll, PRBool aAssumeHScroll,
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PRBool aForce, nsresult* aResult);
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PRBool ScrolledContentDependsOnHeight(ScrollReflowState* aState);
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nsresult ReflowScrolledFrame(ScrollReflowState* aState,
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PRBool aAssumeHScroll,
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PRBool aAssumeVScroll,
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nsHTMLReflowMetrics* aMetrics,
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PRBool aFirstPass);
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nsresult ReflowContents(ScrollReflowState* aState,
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const nsHTMLReflowMetrics& aDesiredSize);
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void PlaceScrollArea(const ScrollReflowState& aState);
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nscoord GetIntrinsicVScrollbarWidth(nsIRenderingContext *aRenderingContext);
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virtual nscoord GetMinWidth(nsIRenderingContext *aRenderingContext);
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virtual nscoord GetPrefWidth(nsIRenderingContext *aRenderingContext);
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NS_IMETHOD GetPadding(nsMargin& aPadding);
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virtual PRBool IsCollapsed(nsBoxLayoutState& aBoxLayoutState);
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NS_IMETHOD Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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// Because there can be only one child frame, these two function return
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// NS_ERROR_FAILURE
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NS_IMETHOD AppendFrames(nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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virtual void Destroy();
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NS_IMETHOD RemoveFrame(nsIAtom* aListName,
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nsIFrame* aOldFrame);
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virtual nsIView* GetParentViewForChildFrame(nsIFrame* aFrame) const {
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return mInner.GetParentViewForChildFrame(aFrame);
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}
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virtual nsIFrame* GetContentInsertionFrame() {
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return mInner.GetScrolledFrame()->GetContentInsertionFrame();
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}
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virtual nsIView* GetMouseCapturer() const {
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return mInner.GetScrolledFrame()->GetView();
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}
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virtual void InvalidateInternal(const nsRect& aDamageRect,
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nscoord aX, nscoord aY, nsIFrame* aForChild,
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PRBool aImmediate) {
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mInner.InvalidateInternal(aDamageRect, aX, aY, aForChild, aImmediate);
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}
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virtual PRBool NeedsView() { return PR_TRUE; }
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virtual PRBool DoesClipChildren() { return PR_TRUE; }
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virtual nsSplittableType GetSplittableType() const;
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virtual nsPoint GetPositionOfChildIgnoringScrolling(nsIFrame* aChild)
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{ nsPoint pt = aChild->GetPosition();
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if (aChild == mInner.GetScrolledFrame()) pt += GetScrollPosition();
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return pt;
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}
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// nsIAnonymousContentCreator
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virtual nsresult CreateAnonymousContent(nsTArray<nsIContent*>& aElements);
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// nsIScrollableFrame
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virtual nsIFrame* GetScrolledFrame() const;
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virtual nsIScrollableView* GetScrollableView();
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virtual nsPoint GetScrollPosition() const;
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virtual void ScrollTo(nsPoint aScrollPosition, PRUint32 aFlags);
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virtual void SetScrollbarVisibility(PRBool aVerticalVisible, PRBool aHorizontalVisible);
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virtual nsIBox* GetScrollbarBox(PRBool aVertical);
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virtual void CurPosAttributeChanged(nsIContent* aChild, PRInt32 aModType);
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// nsIStatefulFrame
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NS_IMETHOD SaveState(SpecialStateID aStateID, nsPresState** aState) {
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NS_ENSURE_ARG_POINTER(aState);
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*aState = mInner.SaveState(aStateID);
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return NS_OK;
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}
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NS_IMETHOD RestoreState(nsPresState* aState) {
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NS_ENSURE_ARG_POINTER(aState);
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mInner.RestoreState(aState);
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return NS_OK;
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}
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virtual void ScrollToRestoredPosition() {
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mInner.ScrollToRestoredPosition();
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}
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virtual nsMargin GetActualScrollbarSizes() const {
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return mInner.GetActualScrollbarSizes();
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}
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virtual nsMargin GetDesiredScrollbarSizes(nsBoxLayoutState* aState);
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virtual nsMargin GetDesiredScrollbarSizes(nsPresContext* aPresContext,
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nsIRenderingContext* aRC) {
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nsBoxLayoutState bls(aPresContext, aRC, 0);
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return GetDesiredScrollbarSizes(&bls);
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}
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virtual nsGfxScrollFrameInner::ScrollbarStyles GetScrollbarStyles() const;
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/**
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* Get the "type" of the frame
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*
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* @see nsGkAtoms::scrollFrame
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*/
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virtual nsIAtom* GetType() const;
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#ifdef NS_DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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#endif
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PRBool DidHistoryRestore() { return mInner.mDidHistoryRestore; }
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#ifdef ACCESSIBILITY
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NS_IMETHOD GetAccessible(nsIAccessible** aAccessible);
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#endif
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protected:
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nsHTMLScrollFrame(nsIPresShell* aShell, nsStyleContext* aContext, PRBool aIsRoot);
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virtual PRIntn GetSkipSides() const;
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void SetSuppressScrollbarUpdate(PRBool aSuppress) {
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mInner.mSupppressScrollbarUpdate = aSuppress;
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}
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PRBool GuessHScrollbarNeeded(const ScrollReflowState& aState);
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PRBool GuessVScrollbarNeeded(const ScrollReflowState& aState);
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nsSize GetScrollPortSize() const
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{
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return mInner.GetScrollPortSize();
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}
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PRBool IsScrollbarUpdateSuppressed() const {
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return mInner.mSupppressScrollbarUpdate;
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}
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// Return whether we're in an "initial" reflow. Some reflows with
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// NS_FRAME_FIRST_REFLOW set are NOT "initial" as far as we're concerned.
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PRBool InInitialReflow() const;
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/**
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* Override this to return false if computed height/min-height/max-height
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* should NOT be propagated to child content.
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* nsListControlFrame uses this.
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*/
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virtual PRBool ShouldPropagateComputedHeightToScrolledContent() const { return PR_TRUE; }
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private:
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friend class nsGfxScrollFrameInner;
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nsGfxScrollFrameInner mInner;
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};
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/**
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* The scroll frame creates and manages the scrolling view
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*
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* It only supports having a single child frame that typically is an area
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* frame, but doesn't have to be. The child frame must have a view, though
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*
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* Scroll frames don't support incremental changes, i.e. you can't replace
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* or remove the scrolled frame
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*/
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class nsXULScrollFrame : public nsBoxFrame,
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public nsIScrollableFrame,
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public nsIAnonymousContentCreator,
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public nsIStatefulFrame {
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public:
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friend nsIFrame* NS_NewXULScrollFrame(nsIPresShell* aPresShell, nsStyleContext* aContext, PRBool aIsRoot);
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// Called to set the child frames. We typically have three: the scroll area,
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// the vertical scrollbar, and the horizontal scrollbar.
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NS_IMETHOD SetInitialChildList(nsIAtom* aListName,
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nsIFrame* aChildList);
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NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists) {
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return mInner.BuildDisplayList(aBuilder, aDirtyRect, aLists);
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}
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// XXXldb Is this actually used?
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#if 0
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virtual nscoord GetMinWidth(nsIRenderingContext *aRenderingContext);
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#endif
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// Because there can be only one child frame, these two function return
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// NS_ERROR_FAILURE
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NS_IMETHOD AppendFrames(nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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virtual void Destroy();
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NS_IMETHOD RemoveFrame(nsIAtom* aListName,
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nsIFrame* aOldFrame);
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virtual nsIView* GetParentViewForChildFrame(nsIFrame* aFrame) const {
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return mInner.GetParentViewForChildFrame(aFrame);
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}
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virtual nsIFrame* GetContentInsertionFrame() {
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return mInner.GetScrolledFrame()->GetContentInsertionFrame();
|
|
}
|
|
|
|
virtual nsIView* GetMouseCapturer() const {
|
|
return mInner.GetScrolledFrame()->GetView();
|
|
}
|
|
|
|
virtual void InvalidateInternal(const nsRect& aDamageRect,
|
|
nscoord aX, nscoord aY, nsIFrame* aForChild,
|
|
PRBool aImmediate) {
|
|
mInner.InvalidateInternal(aDamageRect, aX, aY, aForChild, aImmediate);
|
|
}
|
|
|
|
virtual PRBool NeedsView() { return PR_TRUE; }
|
|
virtual PRBool DoesClipChildren() { return PR_TRUE; }
|
|
virtual nsSplittableType GetSplittableType() const;
|
|
|
|
virtual nsPoint GetPositionOfChildIgnoringScrolling(nsIFrame* aChild)
|
|
{ nsPoint pt = aChild->GetPosition();
|
|
if (aChild == mInner.GetScrolledFrame()) pt += GetScrollPosition();
|
|
return pt;
|
|
}
|
|
|
|
// nsIAnonymousContentCreator
|
|
virtual nsresult CreateAnonymousContent(nsTArray<nsIContent*>& aElements);
|
|
|
|
// nsIBox methods
|
|
NS_DECL_ISUPPORTS
|
|
|
|
virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState);
|
|
virtual nsSize GetPrefSize(nsBoxLayoutState& aBoxLayoutState);
|
|
virtual nsSize GetMaxSize(nsBoxLayoutState& aBoxLayoutState);
|
|
virtual nscoord GetBoxAscent(nsBoxLayoutState& aBoxLayoutState);
|
|
|
|
NS_IMETHOD DoLayout(nsBoxLayoutState& aBoxLayoutState);
|
|
NS_IMETHOD GetPadding(nsMargin& aPadding);
|
|
|
|
nsresult Layout(nsBoxLayoutState& aState);
|
|
void LayoutScrollArea(nsBoxLayoutState& aState, const nsRect& aRect);
|
|
|
|
static PRBool AddRemoveScrollbar(PRBool& aHasScrollbar,
|
|
nscoord& aXY,
|
|
nscoord& aSize,
|
|
nscoord aSbSize,
|
|
PRBool aOnRightOrBottom,
|
|
PRBool aAdd);
|
|
|
|
PRBool AddRemoveScrollbar(nsBoxLayoutState& aState,
|
|
nsRect& aScrollAreaSize,
|
|
PRBool aOnTop,
|
|
PRBool aHorizontal,
|
|
PRBool aAdd);
|
|
|
|
PRBool AddHorizontalScrollbar (nsBoxLayoutState& aState, nsRect& aScrollAreaSize, PRBool aOnBottom);
|
|
PRBool AddVerticalScrollbar (nsBoxLayoutState& aState, nsRect& aScrollAreaSize, PRBool aOnRight);
|
|
void RemoveHorizontalScrollbar(nsBoxLayoutState& aState, nsRect& aScrollAreaSize, PRBool aOnBottom);
|
|
void RemoveVerticalScrollbar (nsBoxLayoutState& aState, nsRect& aScrollAreaSize, PRBool aOnRight);
|
|
|
|
static void AdjustReflowStateForPrintPreview(nsBoxLayoutState& aState, PRBool& aSetBack);
|
|
static void AdjustReflowStateBack(nsBoxLayoutState& aState, PRBool aSetBack);
|
|
|
|
// nsIScrollableFrame
|
|
virtual nsIFrame* GetScrolledFrame() const;
|
|
virtual nsIScrollableView* GetScrollableView();
|
|
|
|
virtual nsPoint GetScrollPosition() const;
|
|
virtual void ScrollTo(nsPoint aScrollPosition, PRUint32 aFlags);
|
|
|
|
virtual void SetScrollbarVisibility(PRBool aVerticalVisible, PRBool aHorizontalVisible);
|
|
|
|
virtual nsIBox* GetScrollbarBox(PRBool aVertical);
|
|
|
|
virtual void CurPosAttributeChanged(nsIContent* aChild, PRInt32 aModType);
|
|
|
|
// nsIStatefulFrame
|
|
NS_IMETHOD SaveState(SpecialStateID aStateID, nsPresState** aState) {
|
|
NS_ENSURE_ARG_POINTER(aState);
|
|
*aState = mInner.SaveState(aStateID);
|
|
return NS_OK;
|
|
}
|
|
NS_IMETHOD RestoreState(nsPresState* aState) {
|
|
NS_ENSURE_ARG_POINTER(aState);
|
|
mInner.RestoreState(aState);
|
|
return NS_OK;
|
|
}
|
|
|
|
virtual void ScrollToRestoredPosition() {
|
|
mInner.ScrollToRestoredPosition();
|
|
}
|
|
|
|
virtual nsMargin GetActualScrollbarSizes() const {
|
|
return mInner.GetActualScrollbarSizes();
|
|
}
|
|
virtual nsMargin GetDesiredScrollbarSizes(nsBoxLayoutState* aState);
|
|
virtual nsMargin GetDesiredScrollbarSizes(nsPresContext* aPresContext,
|
|
nsIRenderingContext* aRC) {
|
|
nsBoxLayoutState bls(aPresContext, aRC, 0);
|
|
return GetDesiredScrollbarSizes(&bls);
|
|
}
|
|
virtual nsGfxScrollFrameInner::ScrollbarStyles GetScrollbarStyles() const;
|
|
|
|
/**
|
|
* Get the "type" of the frame
|
|
*
|
|
* @see nsGkAtoms::scrollFrame
|
|
*/
|
|
virtual nsIAtom* GetType() const;
|
|
|
|
virtual PRBool IsFrameOfType(PRUint32 aFlags) const
|
|
{
|
|
// Override bogus IsFrameOfType in nsBoxFrame.
|
|
if (aFlags & (nsIFrame::eReplacedContainsBlock | nsIFrame::eReplaced))
|
|
return PR_FALSE;
|
|
return nsBoxFrame::IsFrameOfType(aFlags);
|
|
}
|
|
|
|
#ifdef NS_DEBUG
|
|
NS_IMETHOD GetFrameName(nsAString& aResult) const;
|
|
#endif
|
|
|
|
protected:
|
|
nsXULScrollFrame(nsIPresShell* aShell, nsStyleContext* aContext, PRBool aIsRoot);
|
|
virtual PRIntn GetSkipSides() const;
|
|
|
|
private:
|
|
friend class nsGfxScrollFrameInner;
|
|
nsGfxScrollFrameInner mInner;
|
|
};
|
|
|
|
#endif /* nsGfxScrollFrame_h___ */
|