1 /* 2 * Copyright (C) 1999-2001 Harri Porten (porten (at) kde.org) 3 * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Apple Inc. All rights reserved. 4 * Copyright (C) 2007 Samuel Weinig <sam (at) webkit.org> 5 * Copyright (C) 2009 Google, Inc. All rights reserved. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this library; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22 #ifndef DOMWrapperWorld_h 23 #define DOMWrapperWorld_h 24 25 #include "JSDOMGlobalObject.h" 26 #include <heap/Weak.h> 27 #include <runtime/WeakGCMap.h> 28 #include <wtf/Forward.h> 29 30 namespace WebCore { 31 32 class JSDOMWrapper; 33 class ScriptController; 34 35 typedef HashMap<void*, JSC::Weak<JSDOMWrapper> > DOMObjectWrapperMap; 36 typedef JSC::WeakGCMap<StringImpl*, JSC::JSString> JSStringCache; 37 38 class JSDOMWrapperOwner : public JSC::WeakHandleOwner { 39 public: 40 JSDOMWrapperOwner(DOMWrapperWorld*); 41 virtual void finalize(JSC::Handle<JSC::Unknown>, void* context); 42 43 private: 44 DOMWrapperWorld* m_world; 45 }; 46 47 inline JSDOMWrapperOwner::JSDOMWrapperOwner(DOMWrapperWorld* world) 48 : m_world(world) 49 { 50 } 51 52 class DOMWrapperWorld : public RefCounted<DOMWrapperWorld> { 53 public: 54 static PassRefPtr<DOMWrapperWorld> create(JSC::JSGlobalData* globalData, bool isNormal = false) 55 { 56 return adoptRef(new DOMWrapperWorld(globalData, isNormal)); 57 } 58 ~DOMWrapperWorld(); 59 60 // Free as much memory held onto by this world as possible. 61 void clearWrappers(); 62 63 void didCreateWindowShell(ScriptController* scriptController) { m_scriptControllersWithWindowShells.add(scriptController); } 64 void didDestroyWindowShell(ScriptController* scriptController) { m_scriptControllersWithWindowShells.remove(scriptController); } 65 66 // FIXME: can we make this private? 67 DOMObjectWrapperMap m_wrappers; 68 JSStringCache m_stringCache; 69 70 bool isNormal() const { return m_isNormal; } 71 72 JSC::JSGlobalData* globalData() const { return m_globalData; } 73 JSDOMWrapperOwner* defaultWrapperOwner() { return &m_defaultWrapperOwner; } 74 75 protected: 76 DOMWrapperWorld(JSC::JSGlobalData*, bool isNormal); 77 78 private: 79 JSC::JSGlobalData* m_globalData; 80 HashSet<ScriptController*> m_scriptControllersWithWindowShells; 81 bool m_isNormal; 82 JSDOMWrapperOwner m_defaultWrapperOwner; 83 }; 84 85 DOMWrapperWorld* normalWorld(JSC::JSGlobalData&); 86 DOMWrapperWorld* mainThreadNormalWorld(); 87 inline DOMWrapperWorld* debuggerWorld() { return mainThreadNormalWorld(); } 88 inline DOMWrapperWorld* pluginWorld() { return mainThreadNormalWorld(); } 89 90 inline DOMWrapperWorld* currentWorld(JSC::ExecState* exec) 91 { 92 return static_cast<JSDOMGlobalObject*>(exec->lexicalGlobalObject())->world(); 93 } 94 95 } // namespace WebCore 96 97 #endif // DOMWrapperWorld_h 98
