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*, RefPtr<JSC::Structure> > JSDOMStructureMap;

    42     typedef HashMap<const JSC::ClassInfo*, JSC::JSObject*> JSDOMConstructorMap;

    43 

    44     class JSDOMGlobalObject : public JSC::JSGlobalObject {

    45         typedef JSC::JSGlobalObject Base;

    46     protected:

    47         struct JSDOMGlobalObjectData;

    48 

    49         JSDOMGlobalObject(NonNullPassRefPtr<JSC::Structure>, JSDOMGlobalObjectData*, JSC::JSObject* thisValue);

    50 

    51     public:

    52         JSDOMStructureMap& structures() { return d()->structures; }

    53         JSDOMConstructorMap& constructors() const { return d()->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 

    69 #if COMPILER(WINSCW)

    70         DOMWrapperWorld* world() { return d()->m_world; }

    71 #else

    72         DOMWrapperWorld* world() { return d()->m_world.get(); }

    73 #endif

    74 

    75         virtual const JSC::ClassInfo* classInfo() const { return &s_info; }

    76         static const JSC::ClassInfo s_info;

    77 

    78     private:

    79         static void destroyJSDOMGlobalObjectData(void*);

    80 

    81     protected:

    82         struct JSDOMGlobalObjectData : public JSC::JSGlobalObject::JSGlobalObjectData {

    83             JSDOMGlobalObjectData(DOMWrapperWorld* world, Destructor destructor = destroyJSDOMGlobalObjectData)

    84                 : JSGlobalObjectData(destructor)

    85                 , evt(0)

    86                 , m_world(world)

    87                 , m_injectedScript(0)

    88             {

    89             }

    90 

    91             JSDOMStructureMap structures;

    92             JSDOMConstructorMap constructors;

    93 

    94             Event* evt;

    95 #if COMPILER(WINSCW)

    96             DOMWrapperWorld* m_world;

    97 #else

    98             RefPtr<DOMWrapperWorld> m_world;

    99 #endif

   100             JSObject* m_injectedScript;

   101         };

   102 

   103 //    private:

   104 //        static void destroyJSDOMGlobalObjectData(void*);

   105 

   106         JSDOMGlobalObjectData* d() const { return static_cast<JSDOMGlobalObjectData*>(JSC::JSVariableObject::d); }

   107     };

   108 

   109     template<class ConstructorClass>

   110     inline JSC::JSObject* getDOMConstructor(JSC::ExecState* exec, const JSDOMGlobalObject* globalObject)

   111     {

   112         if (JSC::JSObject* constructor = globalObject->constructors().get(&ConstructorClass::s_info))

   113             return constructor;

   114         JSC::JSObject* constructor = new (exec) ConstructorClass(exec, const_cast<JSDOMGlobalObject*>(globalObject));

   115         ASSERT(!globalObject->constructors().contains(&ConstructorClass::s_info));

   116         globalObject->constructors().set(&ConstructorClass::s_info, constructor);

   117         return constructor;

   118     }

   119 

   120     JSDOMGlobalObject* toJSDOMGlobalObject(Document*, JSC::ExecState*);

   121     JSDOMGlobalObject* toJSDOMGlobalObject(ScriptExecutionContext*, JSC::ExecState*);

   122 

   123     JSDOMGlobalObject* toJSDOMGlobalObject(Document*, DOMWrapperWorld*);

   124     JSDOMGlobalObject* toJSDOMGlobalObject(ScriptExecutionContext*, DOMWrapperWorld*);

   125 

   126 } // namespace WebCore

   127 

   128 #endif // JSDOMGlobalObject_h