зеркало из https://github.com/mozilla/gecko-dev.git
50 строки
1.5 KiB
C++
50 строки
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* part of nsFrameManager, to work around header inclusionordering */
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#ifndef _nsFrameManagerBase_h_
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#define _nsFrameManagerBase_h_
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#include "nsDebug.h"
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#include "PLDHashTable.h"
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#include "mozilla/Attributes.h"
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class nsIFrame;
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class nsIPresShell;
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class nsFrameManagerBase
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{
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public:
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nsFrameManagerBase();
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bool IsDestroyingFrames() { return mIsDestroyingFrames; }
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/*
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* Gets and sets the root frame (typically the viewport). The lifetime of the
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* root frame is controlled by the frame manager. When the frame manager is
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* destroyed, it destroys the entire frame hierarchy.
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*/
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nsIFrame* GetRootFrame() const { return mRootFrame; }
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void SetRootFrame(nsIFrame* aRootFrame)
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{
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NS_ASSERTION(!mRootFrame, "already have a root frame");
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mRootFrame = aRootFrame;
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}
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protected:
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class UndisplayedMap;
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// weak link, because the pres shell owns us
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nsIPresShell* MOZ_NON_OWNING_REF mPresShell;
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nsIFrame* mRootFrame;
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UndisplayedMap* mDisplayNoneMap;
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UndisplayedMap* mDisplayContentsMap;
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bool mIsDestroyingFrames; // The frame manager is destroying some frame(s).
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};
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#endif
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