/* * 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 "DOMWindowProperty.h" #include "DOMWindow.h" #include "Document.h" #include "Frame.h" namespace WebCore { DOMWindowProperty::DOMWindowProperty(DOMWindow* window) : m_window(window) { if (m_window) m_window->registerProperty(*this); } DOMWindowProperty::~DOMWindowProperty() { if (m_window) m_window->unregisterProperty(*this); m_window = nullptr; } void DOMWindowProperty::suspendForPageCache() { ASSERT(m_window); } void DOMWindowProperty::resumeFromPageCache() { // If this property is being reconnected to its Frame to enter the PageCache, it must have // been disconnected from its Frame in the first place and it should still have an associated DOMWindow. ASSERT(frame()); ASSERT(frame()->document()->domWindow() == m_window); } void DOMWindowProperty::willDestroyGlobalObjectInCachedFrame() { // If the property has been disconnected from its Frame for the page cache, then it must have originally had a Frame // and therefore should still have an associated DOMWindow. ASSERT(m_window); // 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_window) m_window->unregisterProperty(*this); m_window = nullptr; } void DOMWindowProperty::willDestroyGlobalObjectInFrame() { ASSERT(m_window); // 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_window) m_window->unregisterProperty(*this); m_window = nullptr; } void DOMWindowProperty::willDetachGlobalObjectFromFrame() { } Frame* DOMWindowProperty::frame() const { return m_window ? m_window->frame() : nullptr; } }