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