Implement message center on Windows

chrome/browser/ui/views/balloon_view_win.h

+// Copyright (c) 2013 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_VIEW_WIN_H_
+#define CHROME_BROWSER_UI_VIEWS_BALLOON_VIEW_WIN_H_
+
+#include <vector>
+
+#include "base/memory/linked_ptr.h"
+#include "chrome/browser/notifications/balloon.h"
+
+class GURL;
+
+namespace gfx {
+class ImageSkia;
+}
+
+class BalloonViewWin : public BalloonView {
+ public:
+  explicit BalloonViewWin(BalloonCollection* collection);
+  virtual ~BalloonViewWin();
+
+  // BalloonView interface.
+  virtual void Show(Balloon* balloon) OVERRIDE;
+  virtual void Update() OVERRIDE;
+  virtual void RepositionToBalloon() OVERRIDE;
+  virtual void Close(bool by_user) OVERRIDE;
+  virtual gfx::Size GetSize() const OVERRIDE;
+  virtual BalloonHost* GetHost() const OVERRIDE;
+
+  void SetNotificationIcon(const std::string& id, const gfx::ImageSkia& image);
+  void SetNotificationImage(const std::string& id, const gfx::ImageSkia& image);
+
+ private:
+  class ImageDownload;
+
+  typedef std::vector<linked_ptr<ImageDownload> > ImageDownloads;
+
+  void DownloadImages(const Notification& notification);
+
+  BalloonCollection* collection_;
+  Balloon* balloon_;
+
+  // Track the current notification id and downloads so the notification can be
+  // updated properly.
+  std::string notification_id_;
+  ImageDownloads downloads_;
+
+  DISALLOW_COPY_AND_ASSIGN(BalloonViewWin);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_BALLOON_VIEW_WIN_H_