Implement message center on Windows

chrome/browser/ui/views/balloon_collection_impl_win.h

+// Copyright (c) 2012 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 CHROME_BROWSER_UI_VIEWS_BALLOON_COLLECTION_IMPL_WIN_H_
+#define CHROME_BROWSER_UI_VIEWS_BALLOON_COLLECTION_IMPL_WIN_H_
+
+#include <set>
+
+#include "chrome/browser/notifications/balloon_collection_impl.h"
+#include "ui/message_center/message_center.h"
+
+namespace extensions {
+class Extension;
+}
+
+// Wrapper on top of ::BalloonCollectionImpl to provide integration between
+// the Chrome notification UI and Windows notifications
+// (ui::MessageCenterTrayHostWin).
+class BalloonCollectionImplWin
+    : public BalloonCollectionImpl,
+      public message_center::MessageCenter::Delegate {
+ public:
+  BalloonCollectionImplWin();
+  virtual ~BalloonCollectionImplWin();
+
+  // Overridden from BalloonCollectionImpl.
+  virtual void Add(const Notification& notification,
+                   Profile* profile) OVERRIDE;
+  virtual bool HasSpace() const OVERRIDE;
+
+  // Overridden from MessageCenter::Delegate.
+  virtual void NotificationRemoved(const std::string& notification_id) OVERRIDE;
+  virtual void DisableExtension(const std::string& notification_id) OVERRIDE;
+  virtual void DisableNotificationsFromSource(
+      const std::string& notification_id) OVERRIDE;
+  virtual void ShowSettings(const std::string& notification_id) OVERRIDE;
+  virtual void OnClicked(const std::string& notification_id) OVERRIDE;
+  virtual void OnButtonClicked(const std::string& notification_id,
+                               int button_index) OVERRIDE;
+
+  // Updates the notification's content. It uses
+  // NotificationDelegate::id() to check the equality of notifications.
+  // Returns true if the notification has been updated. False if
+  // no corresponding notification is found. This will not change the
+  // visibility of the notification.
+  bool UpdateNotification(const Notification& notification);
+
+  // On Win this behaves the same as UpdateNotification.
+  bool UpdateAndShowNotification(const Notification& notification);
+
+ protected:
+  // Creates a new balloon. Overridable by unit tests.  The caller is
+  // responsible for freeing the pointer returned.
+  virtual Balloon* MakeBalloon(const Notification& notification,
+                               Profile* profile) OVERRIDE;
+
+  const extensions::Extension* GetBalloonExtension(Balloon* balloon);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BalloonCollectionImplWin);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_BALLOON_COLLECTION_IMPL_WIN_H_