Implement message center on Windows

ui/message_center/message_center_tray.h

Index: ui/message_center/message_center_tray.h
diff --git a/ui/message_center/message_center_tray.h b/ui/message_center/message_center_tray.h
new file mode 100644
index 0000000000000000000000000000000000000000..7dfae34828541fe87ec64773dc179ae1e2dfa4c3
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+++ b/ui/message_center/message_center_tray.h
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+// 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 UI_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_H_
+#define UI_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_H_
+
+#include "ui/message_center/message_center.h"
+#include "ui/message_center/message_center_export.h"
+#include "ui/message_center/message_center_tray_host.h"
+#include "ui/views/bubble/tray_bubble_view.h"
+
+template <typename T> struct DefaultSingletonTraits;
+
+namespace {
+class WebNotificationBubbleWrapper;
+}
+
+namespace message_center {
+class MessagePopupBubble;
+class QuietModeBubble;
+}
+
+namespace views {
+class Widget;
+}
+
+namespace ui {
+
+// Class that owns a MessageCenter and hosts it.  Manages the popup and message
+// center bubbles.  Tells the MessageCenterTrayHost when the tray is changed, as
+// well as when bubbles are shown and hidden.
+class MESSAGE_CENTER_EXPORT MessageCenterTray
+    : public views::TrayBubbleView::Delegate,
+      public message_center::MessageCenter::Observer {
+ public:
+  explicit MessageCenterTray(MessageCenterTrayHost* host);
+  virtual ~MessageCenterTray();
+
+  // Shows or updates the message center bubble and hides the popup bubble.
+  void ShowMessageCenterBubble();
+
+  // Hides the message center bubble if visible.
+  bool HideMessageCenterBubble();
+
+  void ToggleMessageCenterBubble();
+
+  // Shows or updates the popup notification bubble if appropriate.  Calls
+  // MessageCenterTrayHost::CanShowPopups to determine if the system is in a
+  // good state for popups.
+  void ShowPopupBubble();
+
+  // Hides the notification bubble if visible.
+  bool HidePopupBubble();
+
+  bool IsMessageCenterVisible() { return message_center_bubble_.get() != NULL; }
+
+  bool IsPopupVisible() { return popup_bubble_.get() != NULL; }
+
+  views::TrayBubbleView* GetPopupBubbleView();
+  views::TrayBubbleView* GetMessageCenterBubbleView();
+
+  MessageCenterTrayHost* host() { return host_; }
+  message_center::MessageCenter* message_center() {
+    return message_center_;
+  }
+
+  // Overridden from views::TrayBubbleView::Delegate.
+  virtual void BubbleViewDestroyed() OVERRIDE;
+  virtual void OnMouseEnteredView() OVERRIDE;
+  virtual void OnMouseExitedView() OVERRIDE;
+  virtual string16 GetAccessibleNameForBubble() OVERRIDE;
+  virtual gfx::Rect GetAnchorRect(views::Widget* anchor_widget,
+                                  AnchorType anchor_type,
+                                  AnchorAlignment anchor_alignment) OVERRIDE;
+  virtual void HideBubble(const views::TrayBubbleView* bubble_view) OVERRIDE;
+
+  // Overridden from message_center::MessageCenter::Host.
+  virtual void OnMessageCenterChanged(bool new_notification) OVERRIDE;
+
+ private:
+  // Calls MessageCenterTrayHost::OnMessageCenterTrayChanged.
+  void OnChanged();
+
+  message_center::MessageCenter* message_center_;
+  scoped_ptr<WebNotificationBubbleWrapper> message_center_bubble_;
+  scoped_ptr<WebNotificationBubbleWrapper> popup_bubble_;
+  MessageCenterTrayHost* host_;
+
+  DISALLOW_COPY_AND_ASSIGN(MessageCenterTray);
+};
+
+}  // namespace ui
+
+#endif  // UI_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_H_