Implement message center on Windows

chrome/browser/ui/views/message_center/message_center_tray_host_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_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_HOST_WIN_H_
+#define CHROME_BROWSER_UI_VIEWS_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_HOST_WIN_H_
+
+#include "chrome/browser/status_icons/status_icon_observer.h"
+#include "ui/message_center/message_center_tray.h"
+#include "ui/message_center/message_center_tray_host.h"
+#include "ui/views/bubble/tray_bubble_view.h"
+
+class StatusIcon;
+template <typename T> struct DefaultSingletonTraits;
+
+namespace message_center {
+class MessageCenter;
+}
+
+namespace views {
+class Widget;
+}
+
+namespace ui {
+
+// A Message Center Tray Host class that manages a system tray icon.  The
+// notification popups will be displayed in the corner of the screen and the
+// message center will be displayed by the system tray icon on click.
+// TODO(dewittj): quiet mode.
+class MessageCenterTrayHostWin
+    : public MessageCenterTrayHost,
+      public StatusIconObserver {
+ public:
+  static MessageCenterTrayHostWin* GetInstance();
+  virtual ~MessageCenterTrayHostWin();
+
+  virtual message_center::MessageCenter* message_center() OVERRIDE;
+
+  // MessageCenterTrayHost implementation.
+  virtual void OnMessageCenterTrayChanged() OVERRIDE;
+  virtual string16 GetAccessibleNameForBubble() OVERRIDE;
+  virtual void OnShowMessageCenterBubble() OVERRIDE;
+  virtual void OnHideMessageCenterBubble() OVERRIDE;
+  virtual gfx::Rect GetAnchorRect(
+      views::Widget* anchor_widget,
+      views::TrayBubbleView::AnchorType anchor_type,
+      views::TrayBubbleView::AnchorAlignment anchor_alignment) OVERRIDE;
+  virtual bool CanShowPopups() OVERRIDE;
+  virtual gfx::NativeView GetBubbleWindowContainer() OVERRIDE;
+  virtual views::TrayBubbleView::AnchorAlignment GetAnchorAlignment() OVERRIDE;
+  virtual void UpdateInitParams(
+      views::TrayBubbleView::InitParams* init_params) OVERRIDE;
+  // There is no view associated with the system tray icon.
+  virtual views::View* GetAnchorView() OVERRIDE { return NULL; }
+
+  // StatusIconObserver override.
+  virtual void OnStatusIconClicked();
+
+ private:
+  MessageCenterTrayHostWin();
+  void UpdateAnchorRect();
+
+  StatusIcon* status_icon_;
+  bool message_center_visible_;
+  MessageCenterTray* message_center_tray_;
+  gfx::Rect message_center_anchor_rect_;
+  gfx::Rect popup_anchor_rect_;
+
+  friend struct DefaultSingletonTraits<MessageCenterTrayHostWin>;
+  DISALLOW_COPY_AND_ASSIGN(MessageCenterTrayHostWin);
+};
+
+}  // namespace ui
+
+#endif  // CHROME_BROWSER_UI_VIEWS_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_HOST_WIN_H_