Towards Decoupling GuestView from Extensions

extensions/browser/guest_view/guest_view_event.h

+// Copyright 2015 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.
+
+#ifndef EXTENSIONS_BROWSER_GUEST_VIEW_GUEST_VIEW_EVENT_H_
+#define EXTENSIONS_BROWSER_GUEST_VIEW_GUEST_VIEW_EVENT_H_
+
+#include <string>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/values.h"
+
+namespace extensions {
+
+class GuestViewBase;
+
+// A GuestViewEvent is a wrapper class for an extension event.
+// GuestViewEvents may be queued until the guest is attached to a conatiner.
+// This wrapper class holds all the necessary information to fire the event
+// on attachment. GuestViewEvents are owned by GuestViewBase.
+class GuestViewEvent {
+ public:
+  GuestViewEvent(const std::string& name,
+                 scoped_ptr<base::DictionaryValue> args);
+  ~GuestViewEvent();
+
+  // This method will dispatch the event to the specified |guest|'s embedder and
+  // use the provided |instance_id| for routing. After dispatch, this object
+  // will self-destruct.
+  void Dispatch(GuestViewBase* guest, int instance_id);
+
+private:
+  const std::string name_;
+  scoped_ptr<base::DictionaryValue> args_;
+
+  DISALLOW_COPY_AND_ASSIGN(GuestViewEvent);
+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_BROWSER_GUEST_VIEW_GUEST_VIEW_EVENT_H_