ui/message_center/message_center_tray.h

   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 "ui/base/models/simple_menu_model.h"
  10 #include "ui/message_center/message_center.h"
  11 #include "ui/message_center/message_center_export.h"
  12 #include "ui/message_center/message_center_tray_delegate.h"
  13
  14 namespace message_center {
  15
  16 class MessageBubbleBase;
  17 class MessagePopupBubble;
  18 class QuietModeBubble;
  19
  20 // Implementation found with each supported platform's implementation of
  21 // MessageCenterTrayDelegate.
  22 MessageCenterTrayDelegate* CreateMessageCenterTray();
  23
  24 // Class that observes a MessageCenter. Manages the popup and message center
  25 // bubbles. Tells the MessageCenterTrayHost when the tray is changed, as well
  26 // as when bubbles are shown and hidden.
  27 class MESSAGE_CENTER_EXPORT MessageCenterTray
  28     : public message_center::MessageCenter::Observer,
  29       public ui::SimpleMenuModel::Delegate {
  30  public:
  31   MessageCenterTray(MessageCenterTrayDelegate* delegate,
  32                     message_center::MessageCenter* message_center);
  33   virtual ~MessageCenterTray();
  34
  35   // Shows or updates the message center bubble and hides the popup bubble.
  36   // Returns whether the message center is visible after the call, whether or
  37   // not it was visible before.
  38   bool ShowMessageCenterBubble();
  39
  40   // Returns whether the message center was visible before.
  41   bool HideMessageCenterBubble();
  42
  43   void ToggleMessageCenterBubble();
  44
  45   // Causes an update if the popup bubble is already shown.
  46   void ShowPopupBubble();
  47
  48   // Returns whether the popup was visible before.
  49   bool HidePopupBubble();
  50
  51   // Creates the menu model for quiet mode and returns it. The caller must
  52   // take the ownership of the return value.
  53   ui::MenuModel* CreateQuietModeMenu();
  54
  55   bool message_center_visible() { return message_center_visible_; }
  56   bool popups_visible() { return popups_visible_; }
  57   MessageCenterTrayDelegate* delegate() { return delegate_; }
  58   const message_center::MessageCenter* message_center() const {
  59     return message_center_;
  60   }
  61   message_center::MessageCenter* message_center() { return message_center_; }
  62
  63   // Overridden from message_center::MessageCenter::Observer:
  64   virtual void OnMessageCenterChanged(bool new_notification) OVERRIDE;
  65
  66   // Overridden from SimpleMenuModel::Delegate.
  67   virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
  68   virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
  69   virtual bool GetAcceleratorForCommandId(
  70       int command_id,
  71       ui::Accelerator* accelerator) OVERRIDE;
  72   virtual void ExecuteCommand(int command_id, int event_flags) OVERRIDE;
  73
  74  private:
  75   void NotifyMessageCenterTrayChanged();
  76
  77   // |message_center_| is a weak pointer that must live longer than
  78   // MessageCenterTray.
  79   message_center::MessageCenter* message_center_;
  80   bool message_center_visible_;
  81   bool popups_visible_;
  82   // |delegate_| is a weak pointer that must live longer than MessageCenterTray.
  83   MessageCenterTrayDelegate* delegate_;
  84
  85   DISALLOW_COPY_AND_ASSIGN(MessageCenterTray);
  86 };
  87
  88 }  // namespace message_center
  89
  90 #endif  // UI_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_H_