Merge webkit.org at r58033 : Initial merge by git

Change-Id: If006c38561af287c50cd578d251629b51e4d8cd1

1 files changed, 97 insertions, 0 deletions

diff --git a/WebCore/bindings/js/DOMWrapperWorld.h b/WebCore/bindings/js/DOMWrapperWorld.h
new file mode 100644
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+++ b/WebCore/bindings/js/DOMWrapperWorld.h
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+/*
+ *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Apple Inc. All rights reserved.
+ *  Copyright (C) 2007 Samuel Weinig <sam@webkit.org>
+ *  Copyright (C) 2009 Google, Inc. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef DOMWrapperWorld_h
+#define DOMWrapperWorld_h
+
+#include "Document.h"
+#include "JSDOMGlobalObject.h"
+#include "JSDOMWrapper.h"
+#include <runtime/WeakGCMap.h>
+
+namespace WebCore {
+
+class ScriptController;
+class StringImpl;
+
+typedef JSC::WeakGCMap<void*, DOMObject*> DOMObjectWrapperMap;
+typedef JSC::WeakGCMap<StringImpl*, JSC::JSString*> JSStringCache; 
+
+class DOMWrapperWorld : public RefCounted<DOMWrapperWorld> {
+public:
+    static PassRefPtr<DOMWrapperWorld> create(JSC::JSGlobalData* globalData, bool isNormal = false)
+    {
+        return adoptRef(new DOMWrapperWorld(globalData, isNormal));
+    }
+    ~DOMWrapperWorld();
+    
+    void registerWorld();
+    void unregisterWorld();
+
+    void didCreateWrapperCache(Document* document) { m_documentsWithWrapperCaches.add(document); }
+    void didDestroyWrapperCache(Document* document) { m_documentsWithWrapperCaches.remove(document); }
+
+    void didCreateWindowShell(ScriptController* scriptController) { m_scriptControllersWithWindowShells.add(scriptController); }
+    void didDestroyWindowShell(ScriptController* scriptController) { m_scriptControllersWithWindowShells.remove(scriptController); }
+
+    // FIXME: can we make this private?
+    DOMObjectWrapperMap m_wrappers;
+    JSStringCache m_stringCache;
+
+    bool isNormal() const { return m_isNormal; }
+
+protected:
+    DOMWrapperWorld(JSC::JSGlobalData*, bool isNormal);
+
+private:
+    JSC::JSGlobalData* m_globalData;
+    HashSet<Document*> m_documentsWithWrapperCaches;
+    HashSet<ScriptController*> m_scriptControllersWithWindowShells;
+    bool m_isNormal;
+    bool m_isRegistered;
+};
+
+DOMWrapperWorld* normalWorld(JSC::JSGlobalData&);
+DOMWrapperWorld* mainThreadNormalWorld();
+inline DOMWrapperWorld* debuggerWorld() { return mainThreadNormalWorld(); }
+inline DOMWrapperWorld* pluginWorld() { return mainThreadNormalWorld(); }
+
+inline DOMWrapperWorld* currentWorld(JSC::ExecState* exec)
+{
+    return static_cast<JSDOMGlobalObject*>(exec->lexicalGlobalObject())->world();
+}
+
+// From Document.h
+
+inline Document::JSWrapperCache* Document::getWrapperCache(DOMWrapperWorld* world)
+{
+    if (world->isNormal()) {
+        if (Document::JSWrapperCache* wrapperCache = m_normalWorldWrapperCache)
+            return wrapperCache;
+        ASSERT(!m_wrapperCacheMap.contains(world));
+    } else if (Document::JSWrapperCache* wrapperCache = m_wrapperCacheMap.get(world))
+        return wrapperCache;
+    return createWrapperCache(world);
+}
+
+} // namespace WebCore
+
+#endif // DOMWrapperWorld_h