void V8MessageEvent::dataAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info)
{
MessageEvent* event = V8MessageEvent::toNative(info.Holder());
v8::Handle<v8::Value> result;
switch (event->dataType()) {
case MessageEvent::DataTypeScriptValue: {
result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::data(info.GetIsolate()));
if (result.IsEmpty()) {
if (!event->dataAsSerializedScriptValue()) {
// If we're in an isolated world and the event was created in the main world,
// we need to find the 'data' property on the main world wrapper and clone it.
v8::Local<v8::Value> mainWorldData = V8HiddenValue::getHiddenValueFromMainWorldWrapper(info.GetIsolate(), event, V8HiddenValue::data(info.GetIsolate()));
if (!mainWorldData.IsEmpty())
event->setSerializedData(SerializedScriptValue::createAndSwallowExceptions(mainWorldData, info.GetIsolate()));
}
if (event->dataAsSerializedScriptValue())
result = event->dataAsSerializedScriptValue()->deserialize(info.GetIsolate());
else
result = v8::Null(info.GetIsolate());
}
break;
}
case MessageEvent::DataTypeSerializedScriptValue:
if (SerializedScriptValue* serializedValue = event->dataAsSerializedScriptValue()) {
MessagePortArray ports = event->ports();
result = serializedValue->deserialize(info.GetIsolate(), &ports);
} else {
result = v8::Null(info.GetIsolate());
}
break;
case MessageEvent::DataTypeString: {
result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::stringData(info.GetIsolate()));
if (result.IsEmpty()) {
String stringValue = event->dataAsString();
result = v8String(info.GetIsolate(), stringValue);
}
break;
}
case MessageEvent::DataTypeBlob:
result = toV8(event->dataAsBlob(), info.Holder(), info.GetIsolate());
break;
case MessageEvent::DataTypeArrayBuffer:
result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::arrayBufferData(info.GetIsolate()));
if (result.IsEmpty())
result = toV8(event->dataAsArrayBuffer(), info.Holder(), info.GetIsolate());
break;
}
// Overwrite the data attribute so it returns the cached result in future invocations.
// This custom getter handler will not be called again.
v8::PropertyAttribute dataAttr = static_cast<v8::PropertyAttribute>(v8::DontDelete | v8::ReadOnly);
info.Holder()->ForceSet(v8AtomicString(info.GetIsolate(), "data"), result, dataAttr);
v8SetReturnValue(info, result);
}
void V8MessageEvent::dataAttributeGetterCustom(
const v8::FunctionCallbackInfo<v8::Value>& info) {
ScriptState* scriptState = ScriptState::current(info.GetIsolate());
auto privateCachedData =
V8PrivateProperty::getMessageEventCachedData(info.GetIsolate());
v8::Local<v8::Value> cachedData =
privateCachedData.get(scriptState->context(), info.Holder());
if (!cachedData.IsEmpty()) {
v8SetReturnValue(info, cachedData);
return;
}
MessageEvent* event = V8MessageEvent::toImpl(info.Holder());
v8::Local<v8::Value> result;
switch (event->getDataType()) {
case MessageEvent::DataTypeScriptValue:
result = event->dataAsScriptValue().v8ValueFor(scriptState);
if (result.IsEmpty())
result = v8::Null(info.GetIsolate());
break;
case MessageEvent::DataTypeSerializedScriptValue:
if (SerializedScriptValue* serializedValue =
event->dataAsSerializedScriptValue()) {
MessagePortArray ports = event->ports();
result = serializedValue->deserialize(info.GetIsolate(), &ports);
} else {
result = v8::Null(info.GetIsolate());
}
break;
case MessageEvent::DataTypeString:
result = v8String(info.GetIsolate(), event->dataAsString());
break;
case MessageEvent::DataTypeBlob:
result = toV8(event->dataAsBlob(), info.Holder(), info.GetIsolate());
break;
case MessageEvent::DataTypeArrayBuffer:
result =
toV8(event->dataAsArrayBuffer(), info.Holder(), info.GetIsolate());
break;
}
// Store the result as a private value so this callback returns the cached
// result in future invocations.
privateCachedData.set(scriptState->context(), info.Holder(), result);
v8SetReturnValue(info, result);
}
v8::Handle<v8::Value> V8MessageEvent::portsAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
{
INC_STATS("DOM.MessageEvent.ports");
MessageEvent* event = V8MessageEvent::toNative(info.Holder());
MessagePortArray* ports = event->ports();
if (!ports || ports->isEmpty())
return v8::Null();
v8::Local<v8::Array> portArray = v8::Array::New(ports->size());
for (size_t i = 0; i < ports->size(); ++i)
portArray->Set(v8::Integer::New(i), toV8((*ports)[i].get()));
return portArray;
}
v8::Handle<v8::Value> V8MessageEvent::portsAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
{
MessageEvent* event = V8MessageEvent::toNative(info.Holder());
MessagePortArray* ports = event->ports();
if (!ports)
return v8::Array::New(0);
MessagePortArray portsCopy(*ports);
v8::Local<v8::Array> portArray = v8::Array::New(portsCopy.size());
for (size_t i = 0; i < portsCopy.size(); ++i)
portArray->Set(v8Integer(i, info.GetIsolate()), toV8(portsCopy[i].get(), info.Holder(), info.GetIsolate()));
return portArray;
}
v8::Handle<v8::Value> V8MessageEvent::dataAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
{
INC_STATS("DOM.MessageEvent.data");
MessageEvent* event = V8MessageEvent::toNative(info.Holder());
v8::Handle<v8::Value> result;
switch (event->dataType()) {
case MessageEvent::DataTypeScriptValue: {
ScriptValue scriptValue = event->dataAsScriptValue();
if (scriptValue.hasNoValue())
result = v8::Null();
else
result = scriptValue.v8Value();
break;
}
case MessageEvent::DataTypeSerializedScriptValue:
if (SerializedScriptValue* serializedValue = event->dataAsSerializedScriptValue())
result = serializedValue->deserialize(event->ports());
else
result = v8::Null();
break;
case MessageEvent::DataTypeString: {
String stringValue = event->dataAsString();
result = v8::String::New(fromWebCoreString(stringValue), stringValue.length());
break;
}
case MessageEvent::DataTypeBlob:
result = toV8(event->dataAsBlob());
break;
case MessageEvent::DataTypeArrayBuffer:
result = toV8(event->dataAsArrayBuffer());
break;
}
// Overwrite the data attribute so it returns the cached result in future invocations.
// This custom handler (dataAccessGetter) will not be called again.
v8::PropertyAttribute dataAttr = static_cast<v8::PropertyAttribute>(v8::DontDelete | v8::ReadOnly);
info.Holder()->ForceSet(name, result, dataAttr);
return result;
}
