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32 #include "bindings/core/v8/V8MessageEvent.h"
34 #include "bindings/core/v8/V8Blob.h"
35 #include "bindings/core/v8/V8MessagePort.h"
36 #include "bindings/core/v8/V8Window.h"
37 #include "bindings/v8/SerializedScriptValue.h"
38 #include "bindings/v8/V8Binding.h"
39 #include "bindings/v8/V8HiddenValue.h"
40 #include "bindings/v8/custom/V8ArrayBufferCustom.h"
41 #include "core/events/MessageEvent.h"
45 // Ensures a wrapper is created for the data to return now so that V8 knows how
46 // much memory is used via the wrapper. To keep the wrapper alive, it's set to
47 // the wrapper of the MessageEvent as a hidden value.
48 static void ensureWrapperCreatedAndAssociated(MessageEvent* eventImpl, v8::Handle<v8::Object> eventWrapper, v8::Isolate* isolate)
50 switch (eventImpl->dataType()) {
51 case MessageEvent::DataTypeScriptValue:
52 case MessageEvent::DataTypeSerializedScriptValue:
54 case MessageEvent::DataTypeString: {
55 String stringValue = eventImpl->dataAsString();
56 V8HiddenValue::setHiddenValue(isolate, eventWrapper, V8HiddenValue::stringData(isolate), v8String(isolate, stringValue));
59 case MessageEvent::DataTypeBlob:
61 case MessageEvent::DataTypeArrayBuffer:
62 V8HiddenValue::setHiddenValue(isolate, eventWrapper, V8HiddenValue::arrayBufferData(isolate), toV8(eventImpl->dataAsArrayBuffer(), eventWrapper, isolate));
67 v8::Handle<v8::Object> wrap(MessageEvent* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
70 ASSERT(!DOMDataStore::containsWrapper<V8MessageEvent>(impl, isolate));
71 v8::Handle<v8::Object> wrapper = V8MessageEvent::createWrapper(impl, creationContext, isolate);
72 ensureWrapperCreatedAndAssociated(impl, wrapper, isolate);
76 void V8MessageEvent::dataAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info)
78 MessageEvent* event = V8MessageEvent::toNative(info.Holder());
80 v8::Handle<v8::Value> result;
81 switch (event->dataType()) {
82 case MessageEvent::DataTypeScriptValue: {
83 result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::data(info.GetIsolate()));
84 if (result.IsEmpty()) {
85 if (!event->dataAsSerializedScriptValue()) {
86 // If we're in an isolated world and the event was created in the main world,
87 // we need to find the 'data' property on the main world wrapper and clone it.
88 v8::Local<v8::Value> mainWorldData = V8HiddenValue::getHiddenValueFromMainWorldWrapper(info.GetIsolate(), event, V8HiddenValue::data(info.GetIsolate()));
89 if (!mainWorldData.IsEmpty())
90 event->setSerializedData(SerializedScriptValue::createAndSwallowExceptions(mainWorldData, info.GetIsolate()));
92 if (event->dataAsSerializedScriptValue())
93 result = event->dataAsSerializedScriptValue()->deserialize(info.GetIsolate());
95 result = v8::Null(info.GetIsolate());
100 case MessageEvent::DataTypeSerializedScriptValue:
101 if (SerializedScriptValue* serializedValue = event->dataAsSerializedScriptValue()) {
102 MessagePortArray ports = event->ports();
103 result = serializedValue->deserialize(info.GetIsolate(), &ports);
105 result = v8::Null(info.GetIsolate());
109 case MessageEvent::DataTypeString: {
110 result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::stringData(info.GetIsolate()));
111 if (result.IsEmpty()) {
112 String stringValue = event->dataAsString();
113 result = v8String(info.GetIsolate(), stringValue);
118 case MessageEvent::DataTypeBlob:
119 result = toV8(event->dataAsBlob(), info.Holder(), info.GetIsolate());
122 case MessageEvent::DataTypeArrayBuffer:
123 result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::arrayBufferData(info.GetIsolate()));
124 if (result.IsEmpty())
125 result = toV8(event->dataAsArrayBuffer(), info.Holder(), info.GetIsolate());
129 // Overwrite the data attribute so it returns the cached result in future invocations.
130 // This custom getter handler will not be called again.
131 v8::PropertyAttribute dataAttr = static_cast<v8::PropertyAttribute>(v8::DontDelete | v8::ReadOnly);
132 info.Holder()->ForceSet(v8AtomicString(info.GetIsolate(), "data"), result, dataAttr);
133 v8SetReturnValue(info, result);
136 void V8MessageEvent::initMessageEventMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
138 MessageEvent* event = V8MessageEvent::toNative(info.Holder());
139 TOSTRING_VOID(V8StringResource<>, typeArg, info[0]);
140 TONATIVE_VOID(bool, canBubbleArg, info[1]->BooleanValue());
141 TONATIVE_VOID(bool, cancelableArg, info[2]->BooleanValue());
142 v8::Handle<v8::Value> dataArg = info[3];
143 TOSTRING_VOID(V8StringResource<>, originArg, info[4]);
144 TOSTRING_VOID(V8StringResource<>, lastEventIdArg, info[5]);
145 LocalDOMWindow* sourceArg = toDOMWindow(info[6], info.GetIsolate());
146 OwnPtr<MessagePortArray> portArray;
147 const int portArrayIndex = 7;
148 if (!isUndefinedOrNull(info[portArrayIndex])) {
149 portArray = adoptPtr(new MessagePortArray);
150 bool success = false;
151 *portArray = toRefPtrNativeArray<MessagePort, V8MessagePort>(info[portArrayIndex], portArrayIndex + 1, info.GetIsolate(), &success);
155 event->initMessageEvent(typeArg, canBubbleArg, cancelableArg, originArg, lastEventIdArg, sourceArg, portArray.release());
157 if (!dataArg.IsEmpty()) {
158 V8HiddenValue::setHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::data(info.GetIsolate()), dataArg);
159 if (DOMWrapperWorld::current(info.GetIsolate()).isIsolatedWorld())
160 event->setSerializedData(SerializedScriptValue::createAndSwallowExceptions(dataArg, info.GetIsolate()));
164 } // namespace WebCore