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/*
* Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef JSCallbackObject_h
#define JSCallbackObject_h
#include "JSObjectRef.h"
#include "JSValueRef.h"
#include "JSObject.h"
#include <wtf/PassOwnPtr.h>
namespace JSC {
struct JSCallbackObjectData : WeakHandleOwner {
JSCallbackObjectData(void* privateData, JSClassRef jsClass)
: privateData(privateData)
, jsClass(jsClass)
{
JSClassRetain(jsClass);
}
~JSCallbackObjectData()
{
JSClassRelease(jsClass);
}
JSValue getPrivateProperty(const Identifier& propertyName) const
{
if (!m_privateProperties)
return JSValue();
return m_privateProperties->getPrivateProperty(propertyName);
}
void setPrivateProperty(JSGlobalData& globalData, JSCell* owner, const Identifier& propertyName, JSValue value)
{
if (!m_privateProperties)
m_privateProperties = adoptPtr(new JSPrivatePropertyMap);
m_privateProperties->setPrivateProperty(globalData, owner, propertyName, value);
}
void deletePrivateProperty(const Identifier& propertyName)
{
if (!m_privateProperties)
return;
m_privateProperties->deletePrivateProperty(propertyName);
}
void visitChildren(SlotVisitor& visitor)
{
if (!m_privateProperties)
return;
m_privateProperties->visitChildren(visitor);
}
void* privateData;
JSClassRef jsClass;
struct JSPrivatePropertyMap {
JSValue getPrivateProperty(const Identifier& propertyName) const
{
PrivatePropertyMap::const_iterator location = m_propertyMap.find(propertyName.impl());
if (location == m_propertyMap.end())
return JSValue();
return location->second.get();
}
void setPrivateProperty(JSGlobalData& globalData, JSCell* owner, const Identifier& propertyName, JSValue value)
{
WriteBarrier<Unknown> empty;
m_propertyMap.add(propertyName.impl(), empty).first->second.set(globalData, owner, value);
}
void deletePrivateProperty(const Identifier& propertyName)
{
m_propertyMap.remove(propertyName.impl());
}
void visitChildren(SlotVisitor& visitor)
{
for (PrivatePropertyMap::iterator ptr = m_propertyMap.begin(); ptr != m_propertyMap.end(); ++ptr) {
if (ptr->second)
visitor.append(&ptr->second);
}
}
private:
typedef HashMap<RefPtr<StringImpl>, WriteBarrier<Unknown>, IdentifierRepHash> PrivatePropertyMap;
PrivatePropertyMap m_propertyMap;
};
OwnPtr<JSPrivatePropertyMap> m_privateProperties;
virtual void finalize(Handle<Unknown>, void*);
};
template <class Base>
class JSCallbackObject : public Base {
public:
JSCallbackObject(ExecState*, JSGlobalObject*, Structure*, JSClassRef, void* data);
JSCallbackObject(JSGlobalData&, JSClassRef, Structure*);
void setPrivate(void* data);
void* getPrivate();
static const ClassInfo s_info;
JSClassRef classRef() const { return m_callbackObjectData->jsClass; }
bool inherits(JSClassRef) const;
static Structure* createStructure(JSGlobalData& globalData, JSValue proto)
{
return Structure::create(globalData, proto, TypeInfo(ObjectType, StructureFlags), Base::AnonymousSlotCount, &s_info);
}
JSValue getPrivateProperty(const Identifier& propertyName) const
{
return m_callbackObjectData->getPrivateProperty(propertyName);
}
void setPrivateProperty(JSGlobalData& globalData, const Identifier& propertyName, JSValue value)
{
m_callbackObjectData->setPrivateProperty(globalData, this, propertyName, value);
}
void deletePrivateProperty(const Identifier& propertyName)
{
m_callbackObjectData->deletePrivateProperty(propertyName);
}
protected:
static const unsigned StructureFlags = ProhibitsPropertyCaching | OverridesGetOwnPropertySlot | ImplementsHasInstance | OverridesHasInstance | OverridesVisitChildren | OverridesGetPropertyNames | Base::StructureFlags;
private:
virtual UString className() const;
virtual bool getOwnPropertySlot(ExecState*, const Identifier&, PropertySlot&);
virtual bool getOwnPropertyDescriptor(ExecState*, const Identifier&, PropertyDescriptor&);
virtual void put(ExecState*, const Identifier&, JSValue, PutPropertySlot&);
virtual bool deleteProperty(ExecState*, const Identifier&);
virtual bool deleteProperty(ExecState*, unsigned);
virtual bool hasInstance(ExecState* exec, JSValue value, JSValue proto);
virtual void getOwnPropertyNames(ExecState*, PropertyNameArray&, EnumerationMode mode = ExcludeDontEnumProperties);
virtual double toNumber(ExecState*) const;
virtual UString toString(ExecState*) const;
virtual ConstructType getConstructData(ConstructData&);
virtual CallType getCallData(CallData&);
virtual void visitChildren(SlotVisitor& visitor)
{
ASSERT_GC_OBJECT_INHERITS((static_cast<Base*>(this)), &JSCallbackObject<Base>::s_info);
COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
ASSERT(Base::structure()->typeInfo().overridesVisitChildren());
Base::visitChildren(visitor);
m_callbackObjectData->visitChildren(visitor);
}
void init(ExecState*);
static JSCallbackObject* asCallbackObject(JSValue);
static EncodedJSValue JSC_HOST_CALL call(ExecState*);
static EncodedJSValue JSC_HOST_CALL construct(ExecState*);
JSValue getStaticValue(ExecState*, const Identifier&);
static JSValue staticFunctionGetter(ExecState*, JSValue, const Identifier&);
static JSValue callbackGetter(ExecState*, JSValue, const Identifier&);
OwnPtr<JSCallbackObjectData> m_callbackObjectData;
};
} // namespace JSC
// include the actual template class implementation
#include "JSCallbackObjectFunctions.h"
#endif // JSCallbackObject_h