1/*
2 *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
3 *  Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Apple Inc. All rights reserved.
4 *  Copyright (C) 2007 Samuel Weinig <sam@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 <wtf/Forward.h>
27
28namespace WebCore {
29
30class CSSValue;
31class JSDOMWrapper;
32class ScriptController;
33
34typedef HashMap<void*, JSC::Weak<JSC::JSObject>> DOMObjectWrapperMap;
35
36class DOMWrapperWorld : public RefCounted<DOMWrapperWorld> {
37public:
38    static PassRefPtr<DOMWrapperWorld> create(JSC::VM& vm, bool isNormal = false)
39    {
40        return adoptRef(new DOMWrapperWorld(vm, isNormal));
41    }
42    ~DOMWrapperWorld();
43
44    // Free as much memory held onto by this world as possible.
45    void clearWrappers();
46
47    void didCreateWindowShell(ScriptController* scriptController) { m_scriptControllersWithWindowShells.add(scriptController); }
48    void didDestroyWindowShell(ScriptController* scriptController) { m_scriptControllersWithWindowShells.remove(scriptController); }
49
50    // FIXME: can we make this private?
51    DOMObjectWrapperMap m_wrappers;
52    HashMap<CSSValue*, void*> m_cssValueRoots;
53
54    bool isNormal() const { return m_isNormal; }
55
56    JSC::VM& vm() const { return m_vm; }
57
58protected:
59    DOMWrapperWorld(JSC::VM&, bool isNormal);
60
61private:
62    JSC::VM& m_vm;
63    HashSet<ScriptController*> m_scriptControllersWithWindowShells;
64    bool m_isNormal;
65};
66
67DOMWrapperWorld& normalWorld(JSC::VM&);
68DOMWrapperWorld& mainThreadNormalWorld();
69inline DOMWrapperWorld& debuggerWorld() { return mainThreadNormalWorld(); }
70inline DOMWrapperWorld& pluginWorld() { return mainThreadNormalWorld(); }
71
72inline DOMWrapperWorld& currentWorld(JSC::ExecState* exec)
73{
74    return JSC::jsCast<JSDOMGlobalObject*>(exec->lexicalGlobalObject())->world();
75}
76
77} // namespace WebCore
78
79#endif // DOMWrapperWorld_h
80