Home | History | Annotate | Download | only in js 
      1 /*
      2  * Copyright (C) 2008 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 COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  *
     25  */
     26 
     27 #ifndef JSDOMGlobalObject_h
     28 #define JSDOMGlobalObject_h
     29 
     30 #include <runtime/JSGlobalObject.h>
     31 
     32 namespace WebCore {
     33 
     34     class Document;
     35     class Event;
     36     class DOMWrapperWorld;
     37     class JSLazyEventListener;
     38     class JSEventListener;
     39     class ScriptExecutionContext;
     40 
     41     typedef HashMap<const JSC::ClassInfo*, JSC::WriteBarrier<JSC::Structure> > JSDOMStructureMap;
     42     typedef HashMap<const JSC::ClassInfo*, JSC::WriteBarrier<JSC::JSObject> > JSDOMConstructorMap;
     43 
     44     class JSDOMGlobalObject : public JSC::JSGlobalObject {
     45         typedef JSC::JSGlobalObject Base;
     46     protected:
     47         struct JSDOMGlobalObjectData;
     48 
     49         JSDOMGlobalObject(JSC::JSGlobalData&, JSC::Structure*, PassRefPtr<DOMWrapperWorld>, JSC::JSObject* thisValue);
     50 
     51     public:
     52         JSDOMStructureMap& structures() { return m_structures; }
     53         JSDOMConstructorMap& constructors() { return m_constructors; }
     54 
     55         virtual ScriptExecutionContext* scriptExecutionContext() const = 0;
     56 
     57         // Make binding code generation easier.
     58         JSDOMGlobalObject* globalObject() { return this; }
     59 
     60         void setCurrentEvent(Event*);
     61         Event* currentEvent() const;
     62 
     63         void setInjectedScript(JSObject*);
     64         JSObject* injectedScript() const;
     65 
     66         virtual void markChildren(JSC::MarkStack&);
     67 
     68         DOMWrapperWorld* world() { return m_world.get(); }
     69 
     70         static const JSC::ClassInfo s_info;
     71 
     72         static JSC::Structure* createStructure(JSC::JSGlobalData& globalData, JSC::JSValue prototype)
     73         {
     74             return JSC::Structure::create(globalData, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), AnonymousSlotCount, &s_info);
     75         }
     76 
     77     protected:
     78         JSDOMStructureMap m_structures;
     79         JSDOMConstructorMap m_constructors;
     80 
     81         Event* m_currentEvent;
     82         RefPtr<DOMWrapperWorld> m_world;
     83         JSC::WriteBarrier<JSObject> m_injectedScript;
     84     };
     85 
     86     template<class ConstructorClass>
     87     inline JSC::JSObject* getDOMConstructor(JSC::ExecState* exec, const JSDOMGlobalObject* globalObject)
     88     {
     89         if (JSC::JSObject* constructor = const_cast<JSDOMGlobalObject*>(globalObject)->constructors().get(&ConstructorClass::s_info).get())
     90             return constructor;
     91         JSC::JSObject* constructor = new (exec) ConstructorClass(exec, const_cast<JSDOMGlobalObject*>(globalObject));
     92         ASSERT(!const_cast<JSDOMGlobalObject*>(globalObject)->constructors().contains(&ConstructorClass::s_info));
     93         JSC::WriteBarrier<JSC::JSObject> temp;
     94         const_cast<JSDOMGlobalObject*>(globalObject)->constructors().add(&ConstructorClass::s_info, temp).first->second.set(exec->globalData(), globalObject, constructor);
     95         return constructor;
     96     }
     97 
     98     JSDOMGlobalObject* toJSDOMGlobalObject(Document*, JSC::ExecState*);
     99     JSDOMGlobalObject* toJSDOMGlobalObject(ScriptExecutionContext*, JSC::ExecState*);
    100 
    101     JSDOMGlobalObject* toJSDOMGlobalObject(Document*, DOMWrapperWorld*);
    102     JSDOMGlobalObject* toJSDOMGlobalObject(ScriptExecutionContext*, DOMWrapperWorld*);
    103 
    104 } // namespace WebCore
    105 
    106 #endif // JSDOMGlobalObject_h
    107