| /* |
| * 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 APPLE 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 "DOMWindowExtension.h" |
| |
| #include "DOMWindow.h" |
| #include "DOMWrapperWorld.h" |
| #include "Frame.h" |
| #include "FrameLoader.h" |
| #include "FrameLoaderClient.h" |
| #include <wtf/Ref.h> |
| |
| namespace WebCore { |
| |
| DOMWindowExtension::DOMWindowExtension(DOMWindow* window, DOMWrapperWorld& world) |
| : m_window(makeWeakPtr(window)) |
| , m_world(world) |
| , m_wasDetached(false) |
| { |
| ASSERT(this->frame()); |
| if (m_window) |
| m_window->registerObserver(*this); |
| } |
| |
| DOMWindowExtension::~DOMWindowExtension() |
| { |
| if (m_window) |
| m_window->unregisterObserver(*this); |
| } |
| |
| Frame* DOMWindowExtension::frame() const |
| { |
| return m_window ? m_window->frame() : nullptr; |
| } |
| |
| void DOMWindowExtension::suspendForPageCache() |
| { |
| // Calling out to the client might result in this DOMWindowExtension being destroyed |
| // while there is still work to do. |
| Ref<DOMWindowExtension> protectedThis(*this); |
| |
| auto frame = makeRef(*this->frame()); |
| frame->loader().client().dispatchWillDisconnectDOMWindowExtensionFromGlobalObject(this); |
| |
| m_disconnectedFrame = WTFMove(frame); |
| } |
| |
| void DOMWindowExtension::resumeFromPageCache() |
| { |
| ASSERT(frame()); |
| ASSERT(m_disconnectedFrame == frame()); |
| ASSERT(frame()->document()->domWindow() == m_window); |
| |
| m_disconnectedFrame = nullptr; |
| |
| frame()->loader().client().dispatchDidReconnectDOMWindowExtensionToGlobalObject(this); |
| } |
| |
| void DOMWindowExtension::willDestroyGlobalObjectInCachedFrame() |
| { |
| ASSERT(m_disconnectedFrame); |
| |
| // Calling out to the client might result in this DOMWindowExtension being destroyed |
| // while there is still work to do. |
| Ref<DOMWindowExtension> protectedThis(*this); |
| |
| m_disconnectedFrame->loader().client().dispatchWillDestroyGlobalObjectForDOMWindowExtension(this); |
| m_disconnectedFrame = nullptr; |
| |
| // DOMWindowExtension 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. |
| ASSERT(m_window); |
| if (m_window) |
| m_window->unregisterObserver(*this); |
| m_window = nullptr; |
| } |
| |
| void DOMWindowExtension::willDestroyGlobalObjectInFrame() |
| { |
| ASSERT(!m_disconnectedFrame); |
| |
| // Calling out to the client might result in this DOMWindowExtension being destroyed |
| // while there is still work to do. |
| Ref<DOMWindowExtension> protectedThis(*this); |
| |
| if (!m_wasDetached) { |
| Frame* frame = this->frame(); |
| ASSERT(frame); |
| frame->loader().client().dispatchWillDestroyGlobalObjectForDOMWindowExtension(this); |
| } |
| |
| // DOMWindowExtension 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. |
| ASSERT(m_window); |
| if (m_window) |
| m_window->unregisterObserver(*this); |
| m_window = nullptr; |
| } |
| |
| void DOMWindowExtension::willDetachGlobalObjectFromFrame() |
| { |
| ASSERT(!m_disconnectedFrame); |
| ASSERT(!m_wasDetached); |
| |
| // Calling out to the client might result in this DOMWindowExtension being destroyed |
| // while there is still work to do. |
| Ref<DOMWindowExtension> protectedThis(*this); |
| |
| Frame* frame = this->frame(); |
| ASSERT(frame); |
| frame->loader().client().dispatchWillDestroyGlobalObjectForDOMWindowExtension(this); |
| |
| m_wasDetached = true; |
| } |
| |
| } // namespace WebCore |