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      1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef UI_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_H_
      6 #define UI_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_H_
      7 
      8 #include "base/observer_list.h"
      9 #include "base/strings/string16.h"
     10 #include "ui/message_center/message_center_export.h"
     11 #include "ui/message_center/message_center_observer.h"
     12 #include "ui/message_center/message_center_tray_delegate.h"
     13 #include "ui/message_center/notifier_settings.h"
     14 
     15 namespace ui {
     16 class MenuModel;
     17 }
     18 
     19 namespace message_center {
     20 
     21 class MessageCenter;
     22 class MessageBubbleBase;
     23 class MessagePopupBubble;
     24 class QuietModeBubble;
     25 
     26 // Implementation found with each supported platform's implementation of
     27 // MessageCenterTrayDelegate.
     28 MessageCenterTrayDelegate* CreateMessageCenterTray();
     29 
     30 // Class that observes a MessageCenter. Manages the popup and message center
     31 // bubbles. Tells the MessageCenterTrayHost when the tray is changed, as well
     32 // as when bubbles are shown and hidden.
     33 class MESSAGE_CENTER_EXPORT MessageCenterTray : public MessageCenterObserver {
     34  public:
     35   MessageCenterTray(MessageCenterTrayDelegate* delegate,
     36                     message_center::MessageCenter* message_center);
     37   virtual ~MessageCenterTray();
     38 
     39   // Shows or updates the message center bubble and hides the popup bubble.
     40   // Returns whether the message center is visible after the call, whether or
     41   // not it was visible before.
     42   bool ShowMessageCenterBubble();
     43 
     44   // Hides the message center if visible and returns whether the message center
     45   // was visible before.
     46   bool HideMessageCenterBubble();
     47 
     48   // Marks the message center as "not visible" (this method will not hide the
     49   // message center).
     50   void MarkMessageCenterHidden();
     51 
     52   void ToggleMessageCenterBubble();
     53 
     54   // Causes an update if the popup bubble is already shown.
     55   void ShowPopupBubble();
     56 
     57   // Returns whether the popup was visible before.
     58   bool HidePopupBubble();
     59 
     60   // Toggles the visibility of the settings view in the message center bubble.
     61   void ShowNotifierSettingsBubble();
     62 
     63   // Creates a model for the context menu for a notification card.
     64   scoped_ptr<ui::MenuModel> CreateNotificationMenuModel(
     65       const NotifierId& notifier_id,
     66       const base::string16& display_source);
     67 
     68   bool message_center_visible() { return message_center_visible_; }
     69   bool popups_visible() { return popups_visible_; }
     70   MessageCenterTrayDelegate* delegate() { return delegate_; }
     71   const message_center::MessageCenter* message_center() const {
     72     return message_center_;
     73   }
     74   message_center::MessageCenter* message_center() { return message_center_; }
     75 
     76   // Overridden from MessageCenterObserver:
     77   virtual void OnNotificationAdded(const std::string& notification_id) OVERRIDE;
     78   virtual void OnNotificationRemoved(const std::string& notification_id,
     79                                      bool by_user) OVERRIDE;
     80   virtual void OnNotificationUpdated(
     81       const std::string& notification_id) OVERRIDE;
     82   virtual void OnNotificationClicked(
     83       const std::string& notification_id) OVERRIDE;
     84   virtual void OnNotificationButtonClicked(
     85       const std::string& notification_id,
     86       int button_index) OVERRIDE;
     87   virtual void OnNotificationDisplayed(
     88       const std::string& notification_id,
     89       const DisplaySource source) OVERRIDE;
     90   virtual void OnQuietModeChanged(bool in_quiet_mode) OVERRIDE;
     91   virtual void OnBlockingStateChanged(NotificationBlocker* blocker) OVERRIDE;
     92 
     93  private:
     94   void OnMessageCenterChanged();
     95   void NotifyMessageCenterTrayChanged();
     96   void HidePopupBubbleInternal();
     97 
     98   // |message_center_| is a weak pointer that must live longer than
     99   // MessageCenterTray.
    100   message_center::MessageCenter* message_center_;
    101   bool message_center_visible_;
    102   bool popups_visible_;
    103   // |delegate_| is a weak pointer that must live longer than MessageCenterTray.
    104   MessageCenterTrayDelegate* delegate_;
    105 
    106   DISALLOW_COPY_AND_ASSIGN(MessageCenterTray);
    107 };
    108 
    109 }  // namespace message_center
    110 
    111 #endif  // UI_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_H_
    112