Add IPC messages for ARC notification

components/arc/arc_bridge_service.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 COMPONENTS_ARC_ARC_BRIDGE_SERVICE_H_
 #define COMPONENTS_ARC_ARC_BRIDGE_SERVICE_H_
 
 #include "base/files/scoped_file.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "components/arc/common/arc_message_types.h"
+#include "components/arc/common/arc_notification_types.h"
 
 namespace base {
 class CommandLine;
 class SequencedTaskRunner;
 class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace arc {
 
 // The Chrome-side service that handles ARC instances and ARC bridge creation.
@@ skipping 49 matching lines @@
     // Called when the instance has reached a boot phase
     virtual void OnInstanceBootPhase(InstanceBootPhase phase) {}
 
     // Called whenever ARC's availability has changed for this system.
     virtual void OnAvailableChanged(bool available) {}
 
    protected:
     virtual ~Observer() {}
   };
 
+  class NotificationObserver {

[dcheng, 2015/12/02 18:26:53]

With https://codereview.chromium.org/1475563002, there will now  be 3 different
observer types for ARC...

[yoshiki, 2015/12/03 14:17:55]

Yes, and we'll have more type of observers, but I think it is better rather than
one shared giant observer class in terms of performance.

+   public:
+    // Called whenever a notification has been posted on Android side. This
+    // event is used for both creation and update.
+    virtual void OnNotificationPostedFromAndroid(
+        const ArcNotificationData& data) {}
+    // Called whenever a notification has been removed on Android side.
+    virtual void OnNotificationRemovedFromAndroid(const std::string& key) {}
+
+   protected:
+    virtual ~NotificationObserver() {}
+  };
+
   virtual ~ArcBridgeService();
 
   // Creates instance of |ArcBridgeService| for normal use.
   static scoped_ptr<ArcBridgeService> Create(
       const scoped_refptr<base::SingleThreadTaskRunner>& ipc_task_runner,
       const scoped_refptr<base::SequencedTaskRunner>& file_task_runner);
 
   // Gets the global instance of the ARC Bridge Service. This can only be
   // called on the thread that this class was created on.
   static ArcBridgeService* Get();
@@ skipping 13 matching lines @@
   virtual void HandleStartup() = 0;
 
   // Shutdown() should be called when the browser is shutting down. This can
   // only be called on the thread that this class was created on.
   virtual void Shutdown() = 0;
 
   // Adds or removes observers. This can only be called on the thread that this
   // class was created on.
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
+  void AddNotificationObserver(NotificationObserver* observer);
+  void RemoveNotificationObserver(NotificationObserver* observer);
 
   // Gets the current state of the bridge service.
   State state() const { return state_; }
 
   // Gets if ARC is available in this system.
   bool available() const { return available_; }
 
   // Requests registration of an input device on the ARC instance.
   // TODO(denniskempin): Make this interface more typesafe.
   // |name| should be the displayable name of the emulated device (e.g. "Chrome
   // OS Keyboard"), |device_type| the name of the device type (e.g. "keyboard")
   // and |fd| a file descriptor that emulates the kernel events of the device.
   // This can only be called on the thread that this class was created on.
   virtual bool RegisterInputDevice(const std::string& name,
                                    const std::string& device_type,
                                    base::ScopedFD fd) = 0;
 
+  // Sends a notification event to Android side.
+  virtual bool SendNotificationEventToAndroid(const std::string& key,
+                                              ArcNotificationEvent event) = 0;
+
  protected:
   ArcBridgeService();
 
   // Changes the current state and notifies all observers.
   void SetState(State state);
 
   // Changes the current availability and notifies all observers.
   void SetAvailable(bool availability);
 
   const scoped_refptr<base::SequencedTaskRunner>& origin_task_runner() const {
     return origin_task_runner_;
   }
 
   base::ObserverList<Observer>& observer_list() { return observer_list_; }
+  base::ObserverList<NotificationObserver>& notification_observer_list() {
+    return notification_observer_list_;
+  }
 
  private:
   scoped_refptr<base::SequencedTaskRunner> origin_task_runner_;
 
   base::ObserverList<Observer> observer_list_;
+  base::ObserverList<NotificationObserver> notification_observer_list_;
 
   // If the ARC instance service is available.
   bool available_;
 
   // The current state of the bridge.
   ArcBridgeService::State state_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcBridgeService);
 };
 
 }  // namespace arc
 
 #endif  // COMPONENTS_ARC_ARC_BRIDGE_SERVICE_H_