1/* 2 * Copyright (C) 2012 Apple Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "DOMWindowExtension.h" 28 29#include "DOMWindow.h" 30#include "DOMWrapperWorld.h" 31#include "Frame.h" 32#include "FrameLoader.h" 33#include "FrameLoaderClient.h" 34#include <wtf/Ref.h> 35 36namespace WebCore { 37 38DOMWindowExtension::DOMWindowExtension(Frame* frame, DOMWrapperWorld& world) 39 : DOMWindowProperty(frame) 40 , m_world(&world) 41 , m_wasDetached(false) 42{ 43 ASSERT(this->frame()); 44} 45 46void DOMWindowExtension::disconnectFrameForPageCache() 47{ 48 // Calling out to the client might result in this DOMWindowExtension being destroyed 49 // while there is still work to do. 50 Ref<DOMWindowExtension> protect(*this); 51 52 Frame* frame = this->frame(); 53 frame->loader().client().dispatchWillDisconnectDOMWindowExtensionFromGlobalObject(this); 54 55 m_disconnectedFrame = frame; 56 57 DOMWindowProperty::disconnectFrameForPageCache(); 58} 59 60void DOMWindowExtension::reconnectFrameFromPageCache(Frame* frame) 61{ 62 ASSERT(m_disconnectedFrame == frame); 63 64 DOMWindowProperty::reconnectFrameFromPageCache(frame); 65 m_disconnectedFrame = 0; 66 67 this->frame()->loader().client().dispatchDidReconnectDOMWindowExtensionToGlobalObject(this); 68} 69 70void DOMWindowExtension::willDestroyGlobalObjectInCachedFrame() 71{ 72 ASSERT(m_disconnectedFrame); 73 74 // Calling out to the client might result in this DOMWindowExtension being destroyed 75 // while there is still work to do. 76 Ref<DOMWindowExtension> protect(*this); 77 78 m_disconnectedFrame->loader().client().dispatchWillDestroyGlobalObjectForDOMWindowExtension(this); 79 m_disconnectedFrame = 0; 80 81 DOMWindowProperty::willDestroyGlobalObjectInCachedFrame(); 82} 83 84void DOMWindowExtension::willDestroyGlobalObjectInFrame() 85{ 86 ASSERT(!m_disconnectedFrame); 87 88 // Calling out to the client might result in this DOMWindowExtension being destroyed 89 // while there is still work to do. 90 Ref<DOMWindowExtension> protect(*this); 91 92 if (!m_wasDetached) { 93 Frame* frame = this->frame(); 94 ASSERT(frame); 95 frame->loader().client().dispatchWillDestroyGlobalObjectForDOMWindowExtension(this); 96 } 97 98 DOMWindowProperty::willDestroyGlobalObjectInFrame(); 99} 100 101void DOMWindowExtension::willDetachGlobalObjectFromFrame() 102{ 103 ASSERT(!m_disconnectedFrame); 104 ASSERT(!m_wasDetached); 105 106 // Calling out to the client might result in this DOMWindowExtension being destroyed 107 // while there is still work to do. 108 Ref<DOMWindowExtension> protect(*this); 109 110 Frame* frame = this->frame(); 111 ASSERT(frame); 112 frame->loader().client().dispatchWillDestroyGlobalObjectForDOMWindowExtension(this); 113 114 m_wasDetached = true; 115 DOMWindowProperty::willDetachGlobalObjectFromFrame(); 116} 117 118} // namespace WebCore 119