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78 lines
3.0 KiB
C++
78 lines
3.0 KiB
C++
/*
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* Copyright (C) 2011 Google, Inc. All Rights Reserved.
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* Copyright (C) 2012 Apple Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sky/engine/core/frame/DOMWindowProperty.h"
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#include "sky/engine/core/frame/LocalDOMWindow.h"
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#include "sky/engine/core/frame/LocalFrame.h"
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namespace blink {
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DOMWindowProperty::DOMWindowProperty(LocalFrame* frame)
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: m_frame(frame)
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, m_associatedDOMWindow(0)
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{
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// FIXME: For now it *is* acceptable for a DOMWindowProperty to be created with a null frame.
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// See fast/dom/navigator-detached-no-crash.html for the recipe.
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// We should fix that. <rdar://problem/11567132>
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if (m_frame) {
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m_associatedDOMWindow = m_frame->domWindow();
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m_associatedDOMWindow->registerProperty(this);
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}
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}
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DOMWindowProperty::~DOMWindowProperty()
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{
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if (m_associatedDOMWindow)
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m_associatedDOMWindow->unregisterProperty(this);
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m_associatedDOMWindow = 0;
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m_frame = 0;
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}
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void DOMWindowProperty::willDestroyGlobalObjectInFrame()
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{
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// If the property is getting this callback it must have been created with a LocalFrame/LocalDOMWindow and it should still have them.
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ASSERT(m_frame);
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ASSERT(m_associatedDOMWindow);
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// DOMWindowProperty lifetime isn't tied directly to the LocalDOMWindow itself so it is important that it unregister
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// itself from any LocalDOMWindow it is associated with if that LocalDOMWindow is going away.
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if (m_associatedDOMWindow)
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m_associatedDOMWindow->unregisterProperty(this);
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m_associatedDOMWindow = 0;
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m_frame = 0;
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}
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void DOMWindowProperty::willDetachGlobalObjectFromFrame()
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{
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// If the property is getting this callback it must have been created with a LocalFrame/LocalDOMWindow and it should still have them.
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ASSERT(m_frame);
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ASSERT(m_associatedDOMWindow);
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}
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}
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