Add native_mate implemented Event and EventEmitter.

atom/browser/api/event.cc

@@ -0,0 +1,61 @@
+// Copyright (c) 2014 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/api/event.h"
+
+#include "atom/common/api/api_messages.h"
+#include "atom/common/native_mate_converters/string16_converter.h"
+#include "content/public/browser/web_contents.h"
+#include "native_mate/object_template_builder.h"
+
+namespace mate {
+
+Event::Event()
+    : sender_(NULL),
+      message_(NULL),
+      prevent_default_(false) {
+}
+
+Event::~Event() {
+}
+
+ObjectTemplateBuilder Event::GetObjectTemplateBuilder(v8::Isolate* isolate) {
+  return ObjectTemplateBuilder(isolate)
+      .SetMethod("preventDefault", &Event::PreventDefault)
+      .SetMethod("sendReply", &Event::SendReply);
+}
+
+void Event::SetSenderAndMessage(content::WebContents* sender,
+                                IPC::Message* message) {
+  DCHECK(!sender_);
+  DCHECK(!message_);
+  sender_ = sender;
+  message_ = message;
+
+  Observe(sender);
+}
+
+void Event::WebContentsDestroyed(content::WebContents* web_contents) {
+  sender_ = NULL;
+  message_ = NULL;
+}
+
+void Event::PreventDefault() {
+  prevent_default_ = true;
+}
+
+bool Event::SendReply(const string16& json) {
+  if (message_ == NULL || sender_ == NULL)
+    return false;
+
+  AtomViewHostMsg_Message_Sync::WriteReplyParams(message_, json);
+  return sender_->Send(message_);
+}
+
+// static
+Handle<Event> Event::Create(v8::Isolate* isolate) {
+  return CreateHandle(isolate, new Event);
+}
+
+}  // namespace mate