[Presentation API] fire onconnectionavailable and onconnect event asynchronously

third_party/WebKit/Source/modules/presentation/PresentationConnection.cpp

 // Copyright 2014 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 "modules/presentation/PresentationConnection.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/dom/DOMArrayBufferView.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
+#include "core/dom/ExecutionContextTask.h"
 #include "core/events/Event.h"
 #include "core/events/MessageEvent.h"
 #include "core/fileapi/FileReaderLoader.h"
 #include "core/fileapi/FileReaderLoaderClient.h"
 #include "core/frame/Deprecation.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/UseCounter.h"
 #include "modules/EventTargetModules.h"
 #include "modules/presentation/Presentation.h"
 #include "modules/presentation/PresentationConnectionAvailableEvent.h"
@@ skipping 162 matching lines @@
 PresentationConnection* PresentationConnection::take(
     PresentationController* controller,
     std::unique_ptr<WebPresentationConnectionClient> client,
     PresentationRequest* request) {
   ASSERT(controller);
   ASSERT(request);
 
   PresentationConnection* connection = new PresentationConnection(
       controller->frame(), client->getId(), client->getUrl());
   controller->registerConnection(connection);
-  request->dispatchEvent(PresentationConnectionAvailableEvent::create(
-      EventTypeNames::connectionavailable, connection));
-
   return connection;
 }
 
 // static
 PresentationConnection* PresentationConnection::take(
     PresentationReceiver* receiver,
     std::unique_ptr<WebPresentationConnectionClient> client) {
   DCHECK(receiver);
   DCHECK(client);
 
@@ skipping 201 matching lines @@
     WebPresentationConnectionState state) {
   if (m_state == state)
     return;
 
   m_state = state;
   switch (m_state) {
     case WebPresentationConnectionState::Connecting:
       NOTREACHED();
       return;
     case WebPresentationConnectionState::Connected:
-      dispatchEvent(Event::create(EventTypeNames::connect));
+      getExecutionContext()->postTask(
+          BLINK_FROM_HERE,
+          createSameThreadTask(&PresentationConnection::dispatchConnectEvent,
+                               wrapPersistent(this)));
       return;
     case WebPresentationConnectionState::Terminated:
       dispatchEvent(Event::create(EventTypeNames::terminate));
       return;
     // Closed state is handled in |didClose()|.
     case WebPresentationConnectionState::Closed:
       NOTREACHED();
       return;
   }
   NOTREACHED();
@@ skipping 28 matching lines @@
 void PresentationConnection::didFailLoadingBlob(
     FileError::ErrorCode errorCode) {
   ASSERT(!m_messages.isEmpty() && m_messages.first()->type == MessageTypeBlob);
   // FIXME: generate error message?
   // Ignore the current failed blob item and continue with next items.
   m_messages.removeFirst();
   m_blobLoader.clear();
   handleMessageQueue();
 }
 
+void PresentationConnection::dispatchConnectEvent() {
+  dispatchEvent(Event::create(EventTypeNames::connect));
+}
+
 void PresentationConnection::tearDown() {
   // Cancel current Blob loading if any.
   if (m_blobLoader) {
     m_blobLoader->cancel();
     m_blobLoader.clear();
   }
   m_messages.clear();
 }
 
 }  // namespace blink