1 /* 2 * Copyright (C) 1998, 1999 Torben Weis <weis (at) kde.org> 3 * 1999 Lars Knoll <knoll (at) kde.org> 4 * 1999 Antti Koivisto <koivisto (at) kde.org> 5 * 2000 Simon Hausmann <hausmann (at) kde.org> 6 * 2000 Stefan Schimanski <1Stein (at) gmx.de> 7 * 2001 George Staikos <staikos (at) kde.org> 8 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved. 9 * Copyright (C) 2005 Alexey Proskuryakov <ap (at) nypop.com> 10 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies) 11 * Copyright (C) 2008 Eric Seidel <eric (at) webkit.org> 12 * Copyright (C) 2008 Google Inc. 13 * 14 * This library is free software; you can redistribute it and/or 15 * modify it under the terms of the GNU Library General Public 16 * License as published by the Free Software Foundation; either 17 * version 2 of the License, or (at your option) any later version. 18 * 19 * This library is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 22 * Library General Public License for more details. 23 * 24 * You should have received a copy of the GNU Library General Public License 25 * along with this library; see the file COPYING.LIB. If not, write to 26 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 27 * Boston, MA 02110-1301, USA. 28 */ 29 30 #include "config.h" 31 #include "core/frame/Frame.h" 32 33 #include "core/dom/DocumentType.h" 34 #include "core/events/Event.h" 35 #include "core/frame/LocalDOMWindow.h" 36 #include "core/frame/FrameDestructionObserver.h" 37 #include "core/frame/FrameHost.h" 38 #include "core/frame/Settings.h" 39 #include "core/html/HTMLFrameElementBase.h" 40 #include "core/inspector/InspectorInstrumentation.h" 41 #include "core/loader/EmptyClients.h" 42 #include "core/loader/FrameLoaderClient.h" 43 #include "core/page/Chrome.h" 44 #include "core/page/ChromeClient.h" 45 #include "core/page/EventHandler.h" 46 #include "core/page/FocusController.h" 47 #include "core/page/Page.h" 48 #include "core/rendering/RenderPart.h" 49 #include "public/platform/WebLayer.h" 50 #include "wtf/PassOwnPtr.h" 51 #include "wtf/RefCountedLeakCounter.h" 52 53 namespace WebCore { 54 55 using namespace HTMLNames; 56 57 DEFINE_DEBUG_ONLY_GLOBAL(WTF::RefCountedLeakCounter, frameCounter, ("Frame")); 58 59 Frame::Frame(FrameClient* client, FrameHost* host, FrameOwner* owner) 60 : m_treeNode(this) 61 , m_host(host) 62 , m_owner(owner) 63 , m_client(client) 64 , m_remotePlatformLayer(0) 65 { 66 ASSERT(page()); 67 68 #ifndef NDEBUG 69 frameCounter.increment(); 70 #endif 71 72 if (m_owner) { 73 page()->incrementSubframeCount(); 74 if (m_owner->isLocal()) 75 toHTMLFrameOwnerElement(m_owner)->setContentFrame(*this); 76 } else { 77 page()->setMainFrame(this); 78 } 79 } 80 81 Frame::~Frame() 82 { 83 disconnectOwnerElement(); 84 setDOMWindow(nullptr); 85 86 // FIXME: We should not be doing all this work inside the destructor 87 88 #ifndef NDEBUG 89 frameCounter.decrement(); 90 #endif 91 92 HashSet<FrameDestructionObserver*>::iterator stop = m_destructionObservers.end(); 93 for (HashSet<FrameDestructionObserver*>::iterator it = m_destructionObservers.begin(); it != stop; ++it) 94 (*it)->frameDestroyed(); 95 } 96 97 void Frame::addDestructionObserver(FrameDestructionObserver* observer) 98 { 99 m_destructionObservers.add(observer); 100 } 101 102 void Frame::removeDestructionObserver(FrameDestructionObserver* observer) 103 { 104 m_destructionObservers.remove(observer); 105 } 106 107 FrameHost* Frame::host() const 108 { 109 return m_host; 110 } 111 112 Page* Frame::page() const 113 { 114 if (m_host) 115 return &m_host->page(); 116 return 0; 117 } 118 119 Settings* Frame::settings() const 120 { 121 if (m_host) 122 return &m_host->settings(); 123 return 0; 124 } 125 126 void Frame::setDOMWindow(PassRefPtrWillBeRawPtr<LocalDOMWindow> domWindow) 127 { 128 if (m_domWindow) 129 m_domWindow->reset(); 130 m_domWindow = domWindow; 131 } 132 133 static ChromeClient& emptyChromeClient() 134 { 135 DEFINE_STATIC_LOCAL(EmptyChromeClient, client, ()); 136 return client; 137 } 138 139 ChromeClient& Frame::chromeClient() const 140 { 141 if (Page* page = this->page()) 142 return page->chrome().client(); 143 return emptyChromeClient(); 144 } 145 146 RenderPart* Frame::ownerRenderer() const 147 { 148 if (!deprecatedLocalOwner()) 149 return 0; 150 RenderObject* object = deprecatedLocalOwner()->renderer(); 151 if (!object) 152 return 0; 153 // FIXME: If <object> is ever fixed to disassociate itself from frames 154 // that it has started but canceled, then this can turn into an ASSERT 155 // since ownerElement() would be 0 when the load is canceled. 156 // https://bugs.webkit.org/show_bug.cgi?id=18585 157 if (!object->isRenderPart()) 158 return 0; 159 return toRenderPart(object); 160 } 161 162 163 void Frame::willDetachFrameHost() 164 { 165 HashSet<FrameDestructionObserver*>::iterator stop = m_destructionObservers.end(); 166 for (HashSet<FrameDestructionObserver*>::iterator it = m_destructionObservers.begin(); it != stop; ++it) 167 (*it)->willDetachFrameHost(); 168 169 // FIXME: Page should take care of updating focus/scrolling instead of Frame. 170 // FIXME: It's unclear as to why this is called more than once, but it is, 171 // so page() could be null. 172 if (page() && page()->focusController().focusedFrame() == this) 173 page()->focusController().setFocusedFrame(nullptr); 174 } 175 176 void Frame::detachFromFrameHost() 177 { 178 m_host = 0; 179 } 180 181 bool Frame::isMainFrame() const 182 { 183 Page* page = this->page(); 184 return page && this == page->mainFrame(); 185 } 186 187 void Frame::disconnectOwnerElement() 188 { 189 if (m_owner) { 190 if (m_owner->isLocal()) 191 toHTMLFrameOwnerElement(m_owner)->clearContentFrame(); 192 if (page()) 193 page()->decrementSubframeCount(); 194 } 195 m_owner = 0; 196 } 197 198 HTMLFrameOwnerElement* Frame::deprecatedLocalOwner() const 199 { 200 return m_owner && m_owner->isLocal() ? toHTMLFrameOwnerElement(m_owner) : 0; 201 } 202 203 } // namespace WebCore 204
