ServiceWorker: Implement attributes of ExtendableMessageEvent

third_party/WebKit/Source/bindings/modules/v8/custom/V8ExtendableMessageEventCustom.cpp

-// Copyright 2015 The Chromium Authors. All rights reserved.
+// Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "bindings/modules/v8/V8ServiceWorkerMessageEvent.h"
+#include "bindings/modules/v8/V8ExtendableMessageEvent.h"
 
 #include "bindings/core/v8/SerializedScriptValue.h"
 #include "bindings/core/v8/SerializedScriptValueFactory.h"
 #include "bindings/core/v8/V8HiddenValue.h"
-#include "bindings/modules/v8/V8ServiceWorkerMessageEventInit.h"
+#include "bindings/modules/v8/V8ExtendableMessageEventInit.h"
 
 namespace blink {
 
-void V8ServiceWorkerMessageEvent::constructorCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
+void V8ExtendableMessageEvent::constructorCustom(const v8::FunctionCallbackInfo<v8::Value>& info)

[bashi, 2016/02/10 08:23:03]

Is it possible to share the implementation with V8ServiceWorkerMessageEvent by
using templates? It looks almost the same except types. I guess we can put the
template header file in Source/bindings/modules/v8.

[nhiroki, 2016/02/10 09:48:41]

Thank you for your suggestion. I'm now trying to templatize these functions.

I have a question. How can I get the typename "V8ExtendableMessageEventInit"
from the typename "ExtendableMessageEventInit" programmatically? I found
V8TypeOf<ExtendableMessageEvent>::Type, but I couldn't find a similar helper for
ExtendableMessageEventInit...

[bashi, 2016/02/10 10:21:07]

Oops, I'll add it. Sorry for inconvenience.

 {
-    ExceptionState exceptionState(ExceptionState::ConstructionContext, "ServiceWorkerMessageEvent", info.Holder(), info.GetIsolate());
+    ExceptionState exceptionState(ExceptionState::ConstructionContext, "ExtendableMessageEvent", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 1)) {
         setMinimumArityTypeError(exceptionState, 1, info.Length());
         exceptionState.throwIfNeeded();
         return;
     }
 
     V8StringResource<> type = info[0];
     if (!type.prepare())
         return;
 
-    ServiceWorkerMessageEventInit eventInitDict;
+    ExtendableMessageEventInit eventInitDict;
     if (!isUndefinedOrNull(info[1])) {
         if (!info[1]->IsObject()) {
             exceptionState.throwTypeError("parameter 2 ('eventInitDict') is not an object.");
             exceptionState.throwIfNeeded();
             return;
         }
-        V8ServiceWorkerMessageEventInit::toImpl(info.GetIsolate(), info[1], eventInitDict, exceptionState);
+        V8ExtendableMessageEventInit::toImpl(info.GetIsolate(), info[1], eventInitDict, exceptionState);
         if (exceptionState.throwIfNeeded())
             return;
     }
 
-    RefPtrWillBeRawPtr<ServiceWorkerMessageEvent> impl = ServiceWorkerMessageEvent::create(type, eventInitDict);
+    RefPtrWillBeRawPtr<ExtendableMessageEvent> impl = ExtendableMessageEvent::create(type, eventInitDict);
     v8::Local<v8::Object> wrapper = info.Holder();
-    wrapper = impl->associateWithWrapper(info.GetIsolate(), &V8ServiceWorkerMessageEvent::wrapperTypeInfo, wrapper);
+    wrapper = impl->associateWithWrapper(info.GetIsolate(), &V8ExtendableMessageEvent::wrapperTypeInfo, wrapper);
 
     // TODO(bashi): Workaround for http://crbug.com/529941. We need to store
     // |data| as a hidden value to avoid cycle references.
     if (eventInitDict.hasData()) {
         v8::Local<v8::Value> v8Data = eventInitDict.data().v8Value();
         V8HiddenValue::setHiddenValue(ScriptState::current(info.GetIsolate()), wrapper, V8HiddenValue::data(info.GetIsolate()), v8Data);
         if (DOMWrapperWorld::current(info.GetIsolate()).isIsolatedWorld())
             impl->setSerializedData(SerializedScriptValueFactory::instance().createAndSwallowExceptions(info.GetIsolate(), v8Data));
     }
     v8SetReturnValue(info, wrapper);
 }
 
-void V8ServiceWorkerMessageEvent::dataAttributeGetterCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
+void V8ExtendableMessageEvent::dataAttributeGetterCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
-    ServiceWorkerMessageEvent* event = V8ServiceWorkerMessageEvent::toImpl(info.Holder());
+    ExtendableMessageEvent* event = V8ExtendableMessageEvent::toImpl(info.Holder());
     v8::Isolate* isolate = info.GetIsolate();
     ScriptState* scriptState = ScriptState::current(isolate);
     v8::Local<v8::Value> result = V8HiddenValue::getHiddenValue(scriptState, info.Holder(), V8HiddenValue::data(isolate));
 
     if (!result.IsEmpty()) {
         v8SetReturnValue(info, result);
         return;
     }
 
     v8::Local<v8::Value> data;
     if (SerializedScriptValue* serializedValue = event->serializedData()) {
         MessagePortArray ports = event->ports();
         data = serializedValue->deserialize(isolate, &ports);
     } else if (DOMWrapperWorld::current(isolate).isIsolatedWorld()) {
         v8::Local<v8::Value> mainWorldData = V8HiddenValue::getHiddenValueFromMainWorldWrapper(scriptState, event, V8HiddenValue::data(isolate));
         if (!mainWorldData.IsEmpty()) {
             // TODO(bashi): Enter the main world's ScriptState::Scope while
             // serializing the main world's value.
             event->setSerializedData(SerializedScriptValueFactory::instance().createAndSwallowExceptions(info.GetIsolate(), mainWorldData));
             data = event->serializedData()->deserialize();
         }
     }
     if (data.IsEmpty())
         data = v8::Null(isolate);
     V8HiddenValue::setHiddenValue(scriptState, info.Holder(), V8HiddenValue::data(isolate), data);
     v8SetReturnValue(info, data);
 }
 
 } // namespace blink