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      1 /*
      2  * Copyright (C) 2010 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. AND ITS CONTRIBUTORS ``AS IS''
     14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     23  * THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "InjectedBundleScriptWorld.h"
     28 
     29 #include <WebCore/DOMWrapperWorld.h>
     30 #include <WebCore/ScriptController.h>
     31 #include <wtf/HashMap.h>
     32 
     33 using namespace WebCore;
     34 
     35 namespace WebKit {
     36 
     37 typedef HashMap<DOMWrapperWorld*, InjectedBundleScriptWorld*> WorldMap;
     38 
     39 static WorldMap& allWorlds()
     40 {
     41     DEFINE_STATIC_LOCAL(WorldMap, map, ());
     42     return map;
     43 }
     44 
     45 PassRefPtr<InjectedBundleScriptWorld> InjectedBundleScriptWorld::create()
     46 {
     47     return adoptRef(new InjectedBundleScriptWorld(ScriptController::createWorld()));
     48 }
     49 
     50 PassRefPtr<InjectedBundleScriptWorld> InjectedBundleScriptWorld::getOrCreate(DOMWrapperWorld* world)
     51 {
     52     if (world == mainThreadNormalWorld())
     53         return normalWorld();
     54 
     55     if (InjectedBundleScriptWorld* existingWorld = allWorlds().get(world))
     56         return existingWorld;
     57 
     58     return adoptRef(new InjectedBundleScriptWorld(world));
     59 }
     60 
     61 InjectedBundleScriptWorld* InjectedBundleScriptWorld::normalWorld()
     62 {
     63     static InjectedBundleScriptWorld* world = adoptRef(new InjectedBundleScriptWorld(mainThreadNormalWorld())).leakRef();
     64     return world;
     65 }
     66 
     67 InjectedBundleScriptWorld::InjectedBundleScriptWorld(PassRefPtr<DOMWrapperWorld> world)
     68     : m_world(world)
     69 {
     70     ASSERT(!allWorlds().contains(m_world.get()));
     71     allWorlds().add(m_world.get(), this);
     72 }
     73 
     74 InjectedBundleScriptWorld::~InjectedBundleScriptWorld()
     75 {
     76     ASSERT(allWorlds().contains(m_world.get()));
     77     allWorlds().remove(m_world.get());
     78 }
     79 
     80 DOMWrapperWorld* InjectedBundleScriptWorld::coreWorld() const
     81 {
     82     return m_world.get();
     83 }
     84 
     85 void InjectedBundleScriptWorld::clearWrappers()
     86 {
     87     m_world->clearWrappers();
     88 }
     89 
     90 } // namespace WebKit
     91