void V8CustomEvent::detailAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info)
{
CustomEvent* event = V8CustomEvent::toNative(info.Holder());
v8::Handle<v8::Value> result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::detail(info.GetIsolate()));
if (!result.IsEmpty()) {
v8SetReturnValue(info, result);
return;
}
if (!event->serializedDetail()) {
// If we're in an isolated world and the event was created in the main world,
// we need to find the 'detail' property on the main world wrapper and clone it.
v8::Local<v8::Value> mainWorldDetail = V8HiddenValue::getHiddenValueFromMainWorldWrapper(info.GetIsolate(), event, V8HiddenValue::detail(info.GetIsolate()));
if (!mainWorldDetail.IsEmpty())
event->setSerializedDetail(SerializedScriptValue::createAndSwallowExceptions(mainWorldDetail, info.GetIsolate()));
}
if (event->serializedDetail()) {
result = event->serializedDetail()->deserialize();
v8SetReturnValue(info, cacheState(info.Holder(), result, info.GetIsolate()));
return;
}
v8SetReturnValue(info, cacheState(info.Holder(), v8::Null(info.GetIsolate()), info.GetIsolate()));
}
void V8PopStateEvent::stateAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info)
{
v8::Local<v8::Value> result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::state(info.GetIsolate()));
if (!result.IsEmpty()) {
v8SetReturnValue(info, result);
return;
}
PopStateEvent* event = V8PopStateEvent::toImpl(info.Holder());
History* history = event->history();
if (!history || !event->serializedState()) {
if (!event->serializedState()) {
// If we're in an isolated world and the event was created in the main world,
// we need to find the 'state' property on the main world wrapper and clone it.
v8::Local<v8::Value> mainWorldState = V8HiddenValue::getHiddenValueFromMainWorldWrapper(info.GetIsolate(), event, V8HiddenValue::state(info.GetIsolate()));
if (!mainWorldState.IsEmpty())
event->setSerializedState(SerializedScriptValueFactory::instance().createAndSwallowExceptions(info.GetIsolate(), mainWorldState));
}
if (event->serializedState())
result = event->serializedState()->deserialize();
else
result = v8::Null(info.GetIsolate());
v8SetReturnValue(info, cacheState(info.Holder(), result, info.GetIsolate()));
return;
}
// There's no cached value from a previous invocation, nor a state value was provided by the
// event, but there is a history object, so first we need to see if the state object has been
// deserialized through the history object already.
// The current history state object might've changed in the meantime, so we need to take care
// of using the correct one, and always share the same deserialization with history.state.
bool isSameState = history->isSameAsCurrentState(event->serializedState());
if (isSameState) {
v8::Local<v8::Value> v8HistoryValue = toV8(history, info.Holder(), info.GetIsolate());
if (v8HistoryValue.IsEmpty())
return;
v8::Local<v8::Object> v8History = v8HistoryValue.As<v8::Object>();
if (!history->stateChanged()) {
result = V8HiddenValue::getHiddenValue(info.GetIsolate(), v8History, V8HiddenValue::state(info.GetIsolate()));
if (!result.IsEmpty()) {
v8SetReturnValue(info, cacheState(info.Holder(), result, info.GetIsolate()));
return;
}
}
result = event->serializedState()->deserialize(info.GetIsolate());
V8HiddenValue::setHiddenValue(info.GetIsolate(), v8History, V8HiddenValue::state(info.GetIsolate()), result);
} else {
result = event->serializedState()->deserialize(info.GetIsolate());
}
v8SetReturnValue(info, cacheState(info.Holder(), result, info.GetIsolate()));
}
void V8PopStateEvent::stateAttributeGetterCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
v8::Local<v8::Value> result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::state(info.GetIsolate()));
if (!result.IsEmpty()) {
v8SetReturnValue(info, result);
return;
}
PopStateEvent* event = V8PopStateEvent::toImpl(info.Holder());
History* history = event->history();
if (!history || !event->serializedState()) {
// If the event doesn't have serializedState(), it means that the
// event was initialized with PopStateEventInit. In such case, we need
// to get a v8 value for the current world from state().
if (event->serializedState())
result = event->serializedState()->deserialize();
else
result = event->state().v8ValueFor(ScriptState::current(info.GetIsolate()));
if (result.IsEmpty())
result = v8::Null(info.GetIsolate());
v8SetReturnValue(info, cacheState(info.Holder(), result, info.GetIsolate()));
return;
}
// There's no cached value from a previous invocation, nor a state value was provided by the
// event, but there is a history object, so first we need to see if the state object has been
// deserialized through the history object already.
// The current history state object might've changed in the meantime, so we need to take care
// of using the correct one, and always share the same deserialization with history.state.
bool isSameState = history->isSameAsCurrentState(event->serializedState());
if (isSameState) {
v8::Local<v8::Value> v8HistoryValue = toV8(history, info.Holder(), info.GetIsolate());
if (v8HistoryValue.IsEmpty())
return;
v8::Local<v8::Object> v8History = v8HistoryValue.As<v8::Object>();
if (!history->stateChanged()) {
result = V8HiddenValue::getHiddenValue(info.GetIsolate(), v8History, V8HiddenValue::state(info.GetIsolate()));
if (!result.IsEmpty()) {
v8SetReturnValue(info, cacheState(info.Holder(), result, info.GetIsolate()));
return;
}
}
result = event->serializedState()->deserialize(info.GetIsolate());
V8HiddenValue::setHiddenValue(info.GetIsolate(), v8History, V8HiddenValue::state(info.GetIsolate()), result);
} else {
result = event->serializedState()->deserialize(info.GetIsolate());
}
v8SetReturnValue(info, cacheState(info.Holder(), result, info.GetIsolate()));
}
JSValue JSPopStateEvent::state(ExecState* exec) const
{
JSValue cachedValue = m_state.get();
if (!cachedValue.isEmpty()) {
// We cannot use a cached object if we are in a different world than the one it was created in.
if (!cachedValue.isObject() || &worldForDOMObject(cachedValue.getObject()) == ¤tWorld(exec))
return cachedValue;
ASSERT_NOT_REACHED();
}
PopStateEvent& event = impl();
if (!event.state().hasNoValue()) {
// We need to make sure a PopStateEvent does not leak objects in its state property across isolated DOM worlds.
// Ideally, we would check that the worlds have different privileges but that's not possible yet.
JSValue state = event.state().jsValue();
if (state.isObject() && &worldForDOMObject(state.getObject()) != ¤tWorld(exec)) {
if (RefPtr<SerializedScriptValue> serializedValue = event.trySerializeState(exec))
state = serializedValue->deserialize(exec, globalObject(), nullptr);
else
state = jsNull();
}
return cacheState(exec, const_cast<JSPopStateEvent*>(this), state);
}
History* history = event.history();
if (!history || !event.serializedState())
return cacheState(exec, const_cast<JSPopStateEvent*>(this), jsNull());
// There's no cached value from a previous invocation, nor a state value was provided by the
// event, but there is a history object, so first we need to see if the state object has been
// deserialized through the history object already.
// The current history state object might've changed in the meantime, so we need to take care
// of using the correct one, and always share the same deserialization with history.state.
bool isSameState = history->isSameAsCurrentState(event.serializedState().get());
JSValue result;
if (isSameState) {
JSHistory* jsHistory = jsCast<JSHistory*>(toJS(exec, globalObject(), history).asCell());
result = jsHistory->state(exec);
} else
result = event.serializedState()->deserialize(exec, globalObject(), 0);
return cacheState(exec, const_cast<JSPopStateEvent*>(this), result);
}
v8::Handle<v8::Value> V8PopStateEvent::stateAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
{
INC_STATS("DOM.PopStateEvent.state");
v8::Handle<v8::Value> result = info.Holder()->GetHiddenValue(V8HiddenPropertyName::state());
if (!result.IsEmpty())
return result;
PopStateEvent* event = V8PopStateEvent::toNative(info.Holder());
if (!event->state().hasNoValue())
return cacheState(info.Holder(), event->state().v8Value());
History* history = event->history();
if (!history || !event->serializedState())
return cacheState(info.Holder(), v8::Null(info.GetIsolate()));
// There's no cached value from a previous invocation, nor a state value was provided by the
// event, but there is a history object, so first we need to see if the state object has been
// deserialized through the history object already.
// The current history state object might've changed in the meantime, so we need to take care
// of using the correct one, and always share the same deserialization with history.state.
bool isSameState = history->isSameAsCurrentState(event->serializedState());
if (isSameState) {
v8::Handle<v8::Object> v8History = toV8(history, info.Holder()->CreationContext(), info.GetIsolate()).As<v8::Object>();
if (!history->stateChanged()) {
result = v8History->GetHiddenValue(V8HiddenPropertyName::state());
if (!result.IsEmpty())
return cacheState(info.Holder(), result);
}
result = event->serializedState()->deserialize(0, info.GetIsolate());
v8History->SetHiddenValue(V8HiddenPropertyName::state(), result);
} else
result = event->serializedState()->deserialize(0, info.GetIsolate());
return cacheState(info.Holder(), result);
}
void V8CustomEvent::detailAttributeGetterCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
CustomEvent* event = V8CustomEvent::toImpl(info.Holder());
v8::Local<v8::Value> result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::detail(info.GetIsolate()));
if (!result.IsEmpty()) {
v8SetReturnValue(info, result);
return;
}
// Be careful not to return a V8 value which is created in different world.
v8::Local<v8::Value> detail;
if (SerializedScriptValue* serializedValue = event->serializedDetail())
detail = serializedValue->deserialize();
else
detail = event->detail().v8ValueFor(ScriptState::current(info.GetIsolate()));
// |detail| should be null when it is an empty handle because its default value is null.
if (detail.IsEmpty())
detail = v8::Null(info.GetIsolate());
v8SetReturnValue(info, cacheState(info.GetIsolate(), info.Holder(), detail));
}
