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1 /*
2  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
3  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26 
27 #ifndef JSCallbackObject_h
28 #define JSCallbackObject_h
29 
30 #include "JSObjectRef.h"
31 #include "JSValueRef.h"
32 #include "JSObject.h"
33 
34 namespace JSC {
35 
36 template <class Base>
37 class JSCallbackObject : public Base {
38 public:
39     JSCallbackObject(ExecState*, PassRefPtr<Structure>, JSClassRef, void* data);
40     JSCallbackObject(JSClassRef);
41     virtual ~JSCallbackObject();
42 
43     void setPrivate(void* data);
44     void* getPrivate();
45 
46     static const ClassInfo info;
47 
classRef()48     JSClassRef classRef() const { return m_callbackObjectData->jsClass; }
49     bool inherits(JSClassRef) const;
50 
createStructure(JSValuePtr proto)51     static PassRefPtr<Structure> createStructure(JSValuePtr proto)
52     {
53         return Structure::create(proto, TypeInfo(ObjectType, ImplementsHasInstance | OverridesHasInstance));
54     }
55 
56 private:
57     virtual UString className() const;
58 
59     virtual bool getOwnPropertySlot(ExecState*, const Identifier&, PropertySlot&);
60     virtual bool getOwnPropertySlot(ExecState*, unsigned, PropertySlot&);
61 
62     virtual void put(ExecState*, const Identifier&, JSValuePtr, PutPropertySlot&);
63 
64     virtual bool deleteProperty(ExecState*, const Identifier&);
65     virtual bool deleteProperty(ExecState*, unsigned);
66 
67     virtual bool hasInstance(ExecState* exec, JSValuePtr value, JSValuePtr proto);
68 
69     virtual void getPropertyNames(ExecState*, PropertyNameArray&);
70 
71     virtual double toNumber(ExecState*) const;
72     virtual UString toString(ExecState*) const;
73 
74     virtual ConstructType getConstructData(ConstructData&);
75     virtual CallType getCallData(CallData&);
classInfo()76     virtual const ClassInfo* classInfo() const { return &info; }
77 
78     void init(ExecState*);
79 
80     static JSCallbackObject* asCallbackObject(JSValuePtr);
81 
82     static JSValuePtr call(ExecState*, JSObject* functionObject, JSValuePtr thisValue, const ArgList&);
83     static JSObject* construct(ExecState*, JSObject* constructor, const ArgList&);
84 
85     static JSValuePtr staticValueGetter(ExecState*, const Identifier&, const PropertySlot&);
86     static JSValuePtr staticFunctionGetter(ExecState*, const Identifier&, const PropertySlot&);
87     static JSValuePtr callbackGetter(ExecState*, const Identifier&, const PropertySlot&);
88 
89     struct JSCallbackObjectData {
JSCallbackObjectDataJSCallbackObjectData90         JSCallbackObjectData(void* privateData, JSClassRef jsClass)
91             : privateData(privateData)
92             , jsClass(jsClass)
93         {
94             JSClassRetain(jsClass);
95         }
96 
~JSCallbackObjectDataJSCallbackObjectData97         ~JSCallbackObjectData()
98         {
99             JSClassRelease(jsClass);
100         }
101 
102         void* privateData;
103         JSClassRef jsClass;
104     };
105 
106     OwnPtr<JSCallbackObjectData> m_callbackObjectData;
107 };
108 
109 } // namespace JSC
110 
111 // include the actual template class implementation
112 #include "JSCallbackObjectFunctions.h"
113 
114 #endif // JSCallbackObject_h
115