/* | |
* Copyright (C) 2003, 2008, 2009 Apple Inc. All rights reserved. | |
* | |
* 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. | |
*/ | |
#include "config.h" | |
#include "runtime_object.h" | |
#include "JSDOMBinding.h" | |
#include "runtime_method.h" | |
#include <runtime/Error.h> | |
#include <runtime/ObjectPrototype.h> | |
using namespace WebCore; | |
namespace JSC { | |
namespace Bindings { | |
const ClassInfo RuntimeObject::s_info = { "RuntimeObject", 0, 0, 0 }; | |
RuntimeObject::RuntimeObject(ExecState* exec, PassRefPtr<Instance> instance) | |
// FIXME: deprecatedGetDOMStructure uses the prototype off of the wrong global object | |
// We need to pass in the right global object for "i". | |
: JSObject(deprecatedGetDOMStructure<RuntimeObject>(exec)) | |
, m_instance(instance) | |
{ | |
} | |
RuntimeObject::RuntimeObject(ExecState*, NonNullPassRefPtr<Structure> structure, PassRefPtr<Instance> instance) | |
: JSObject(structure) | |
, m_instance(instance) | |
{ | |
} | |
RuntimeObject::~RuntimeObject() | |
{ | |
if (m_instance) | |
m_instance->willDestroyRuntimeObject(); | |
} | |
void RuntimeObject::invalidate() | |
{ | |
ASSERT(m_instance); | |
if (m_instance) | |
m_instance->willInvalidateRuntimeObject(); | |
m_instance = 0; | |
} | |
JSValue RuntimeObject::fallbackObjectGetter(ExecState* exec, JSValue slotBase, const Identifier& propertyName) | |
{ | |
RuntimeObject* thisObj = static_cast<RuntimeObject*>(asObject(slotBase)); | |
RefPtr<Instance> instance = thisObj->m_instance; | |
if (!instance) | |
return throwInvalidAccessError(exec); | |
instance->begin(); | |
Class *aClass = instance->getClass(); | |
JSValue result = aClass->fallbackObject(exec, instance.get(), propertyName); | |
instance->end(); | |
return result; | |
} | |
JSValue RuntimeObject::fieldGetter(ExecState* exec, JSValue slotBase, const Identifier& propertyName) | |
{ | |
RuntimeObject* thisObj = static_cast<RuntimeObject*>(asObject(slotBase)); | |
RefPtr<Instance> instance = thisObj->m_instance; | |
if (!instance) | |
return throwInvalidAccessError(exec); | |
instance->begin(); | |
Class *aClass = instance->getClass(); | |
Field* aField = aClass->fieldNamed(propertyName, instance.get()); | |
JSValue result = aField->valueFromInstance(exec, instance.get()); | |
instance->end(); | |
return result; | |
} | |
JSValue RuntimeObject::methodGetter(ExecState* exec, JSValue slotBase, const Identifier& propertyName) | |
{ | |
RuntimeObject* thisObj = static_cast<RuntimeObject*>(asObject(slotBase)); | |
RefPtr<Instance> instance = thisObj->m_instance; | |
if (!instance) | |
return throwInvalidAccessError(exec); | |
instance->begin(); | |
JSValue method = instance->getMethod(exec, propertyName); | |
instance->end(); | |
return method; | |
} | |
bool RuntimeObject::getOwnPropertySlot(ExecState *exec, const Identifier& propertyName, PropertySlot& slot) | |
{ | |
if (!m_instance) { | |
throwInvalidAccessError(exec); | |
return false; | |
} | |
RefPtr<Instance> instance = m_instance; | |
instance->begin(); | |
Class *aClass = instance->getClass(); | |
if (aClass) { | |
// See if the instance has a field with the specified name. | |
Field *aField = aClass->fieldNamed(propertyName, instance.get()); | |
if (aField) { | |
slot.setCustom(this, fieldGetter); | |
instance->end(); | |
return true; | |
} else { | |
// Now check if a method with specified name exists, if so return a function object for | |
// that method. | |
MethodList methodList = aClass->methodsNamed(propertyName, instance.get()); | |
if (methodList.size() > 0) { | |
slot.setCustom(this, methodGetter); | |
instance->end(); | |
return true; | |
} | |
} | |
// Try a fallback object. | |
if (!aClass->fallbackObject(exec, instance.get(), propertyName).isUndefined()) { | |
slot.setCustom(this, fallbackObjectGetter); | |
instance->end(); | |
return true; | |
} | |
} | |
instance->end(); | |
return instance->getOwnPropertySlot(this, exec, propertyName, slot); | |
} | |
bool RuntimeObject::getOwnPropertyDescriptor(ExecState *exec, const Identifier& propertyName, PropertyDescriptor& descriptor) | |
{ | |
if (!m_instance) { | |
throwInvalidAccessError(exec); | |
return false; | |
} | |
RefPtr<Instance> instance = m_instance; | |
instance->begin(); | |
Class *aClass = instance->getClass(); | |
if (aClass) { | |
// See if the instance has a field with the specified name. | |
Field *aField = aClass->fieldNamed(propertyName, instance.get()); | |
if (aField) { | |
PropertySlot slot; | |
slot.setCustom(this, fieldGetter); | |
instance->end(); | |
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete); | |
return true; | |
} else { | |
// Now check if a method with specified name exists, if so return a function object for | |
// that method. | |
MethodList methodList = aClass->methodsNamed(propertyName, instance.get()); | |
if (methodList.size() > 0) { | |
PropertySlot slot; | |
slot.setCustom(this, methodGetter); | |
instance->end(); | |
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly); | |
return true; | |
} | |
} | |
// Try a fallback object. | |
if (!aClass->fallbackObject(exec, instance.get(), propertyName).isUndefined()) { | |
PropertySlot slot; | |
slot.setCustom(this, fallbackObjectGetter); | |
instance->end(); | |
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly | DontEnum); | |
return true; | |
} | |
} | |
instance->end(); | |
return instance->getOwnPropertyDescriptor(this, exec, propertyName, descriptor); | |
} | |
void RuntimeObject::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot) | |
{ | |
if (!m_instance) { | |
throwInvalidAccessError(exec); | |
return; | |
} | |
RefPtr<Instance> instance = m_instance; | |
instance->begin(); | |
// Set the value of the property. | |
Field *aField = instance->getClass()->fieldNamed(propertyName, instance.get()); | |
if (aField) | |
aField->setValueToInstance(exec, instance.get(), value); | |
else if (!instance->setValueOfUndefinedField(exec, propertyName, value)) | |
instance->put(this, exec, propertyName, value, slot); | |
instance->end(); | |
} | |
bool RuntimeObject::deleteProperty(ExecState*, const Identifier&) | |
{ | |
// Can never remove a property of a RuntimeObject. | |
return false; | |
} | |
JSValue RuntimeObject::defaultValue(ExecState* exec, PreferredPrimitiveType hint) const | |
{ | |
if (!m_instance) | |
return throwInvalidAccessError(exec); | |
RefPtr<Instance> instance = m_instance; | |
instance->begin(); | |
JSValue result = instance->defaultValue(exec, hint); | |
instance->end(); | |
return result; | |
} | |
static JSValue JSC_HOST_CALL callRuntimeObject(ExecState* exec, JSObject* function, JSValue, const ArgList& args) | |
{ | |
ASSERT(function->inherits(&RuntimeObject::s_info)); | |
RefPtr<Instance> instance(static_cast<RuntimeObject*>(function)->getInternalInstance()); | |
instance->begin(); | |
JSValue result = instance->invokeDefaultMethod(exec, args); | |
instance->end(); | |
return result; | |
} | |
CallType RuntimeObject::getCallData(CallData& callData) | |
{ | |
if (!m_instance) | |
return CallTypeNone; | |
RefPtr<Instance> instance = m_instance; | |
if (!instance->supportsInvokeDefaultMethod()) | |
return CallTypeNone; | |
callData.native.function = callRuntimeObject; | |
return CallTypeHost; | |
} | |
static JSObject* callRuntimeConstructor(ExecState* exec, JSObject* constructor, const ArgList& args) | |
{ | |
ASSERT(constructor->inherits(&RuntimeObject::s_info)); | |
RefPtr<Instance> instance(static_cast<RuntimeObject*>(constructor)->getInternalInstance()); | |
instance->begin(); | |
JSValue result = instance->invokeConstruct(exec, args); | |
instance->end(); | |
ASSERT(result); | |
return result.isObject() ? static_cast<JSObject*>(result.asCell()) : constructor; | |
} | |
ConstructType RuntimeObject::getConstructData(ConstructData& constructData) | |
{ | |
if (!m_instance) | |
return ConstructTypeNone; | |
RefPtr<Instance> instance = m_instance; | |
if (!instance->supportsConstruct()) | |
return ConstructTypeNone; | |
constructData.native.function = callRuntimeConstructor; | |
return ConstructTypeHost; | |
} | |
void RuntimeObject::getOwnPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode) | |
{ | |
if (!m_instance) { | |
throwInvalidAccessError(exec); | |
return; | |
} | |
RefPtr<Instance> instance = m_instance; | |
instance->begin(); | |
instance->getPropertyNames(exec, propertyNames); | |
instance->end(); | |
} | |
JSObject* RuntimeObject::throwInvalidAccessError(ExecState* exec) | |
{ | |
return throwError(exec, ReferenceError, "Trying to access object from destroyed plug-in."); | |
} | |
} | |
} |