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1 // Copyright (c) 2012 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 ASH_SYSTEM_WEB_NOTIFICATION_WEB_NOTIFICATION_TRAY_H_
6 #define ASH_SYSTEM_WEB_NOTIFICATION_WEB_NOTIFICATION_TRAY_H_
7 
8 #include "ash/ash_export.h"
9 #include "ash/system/tray/tray_background_view.h"
10 #include "ash/system/user/login_status.h"
11 #include "base/gtest_prod_util.h"
12 #include "base/memory/scoped_ptr.h"
13 #include "base/memory/weak_ptr.h"
14 #include "ui/base/models/simple_menu_model.h"
15 #include "ui/message_center/message_center_tray.h"
16 #include "ui/message_center/message_center_tray_delegate.h"
17 #include "ui/views/bubble/tray_bubble_view.h"
18 #include "ui/views/controls/button/button.h"
19 
20 // Status area tray for showing browser and app notifications. This hosts
21 // a MessageCenter class which manages the notification list. This class
22 // contains the Ash specific tray implementation.
23 //
24 // Note: These are not related to system notifications (i.e NotificationView
25 // generated by SystemTrayItem). Visibility of one notification type or other
26 // is controlled by StatusAreaWidget.
27 
28 namespace views {
29 class ImageButton;
30 class MenuRunner;
31 }
32 
33 namespace message_center {
34 class MessageBubbleBase;
35 class MessageCenter;
36 class MessageCenterBubble;
37 class MessagePopupCollection;
38 }
39 
40 namespace ash {
41 class StatusAreaWidget;
42 class WebNotificationBubbleWrapper;
43 class WebNotificationButton;
44 class AshPopupAlignmentDelegate;
45 
46 class ASH_EXPORT WebNotificationTray
47     : public TrayBackgroundView,
48       public views::TrayBubbleView::Delegate,
49       public message_center::MessageCenterTrayDelegate,
50       public views::ButtonListener,
51       public base::SupportsWeakPtr<WebNotificationTray>,
52       public ui::SimpleMenuModel::Delegate {
53  public:
54   explicit WebNotificationTray(StatusAreaWidget* status_area_widget);
55   virtual ~WebNotificationTray();
56 
57   // Sets the height of the system tray from the edge of the work area so that
58   // the notification popups don't overlap with the tray. Passes 0 if no UI is
59   // shown in the system tray side.
60   void SetSystemTrayHeight(int height);
61 
62   // Returns true if it should block the auto hide behavior of the shelf.
63   bool ShouldBlockShelfAutoHide() const;
64 
65   // Returns true if the message center bubble is visible.
66   bool IsMessageCenterBubbleVisible() const;
67 
68   // Returns true if the mouse is inside the notification bubble.
69   bool IsMouseInNotificationBubble() const;
70 
71   // Shows the message center bubble.
72   void ShowMessageCenterBubble();
73 
74   // Called when the login status is changed.
75   void UpdateAfterLoginStatusChange(user::LoginStatus login_status);
76 
77   // Overridden from TrayBackgroundView.
78   virtual void SetShelfAlignment(ShelfAlignment alignment) OVERRIDE;
79   virtual void AnchorUpdated() OVERRIDE;
80   virtual base::string16 GetAccessibleNameForTray() OVERRIDE;
81   virtual void HideBubbleWithView(
82       const views::TrayBubbleView* bubble_view) OVERRIDE;
83   virtual bool ClickedOutsideBubble() OVERRIDE;
84 
85   // Overridden from ActionableView.
86   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
87 
88   // Overridden from views::TrayBubbleView::Delegate.
89   virtual void BubbleViewDestroyed() OVERRIDE;
90   virtual void OnMouseEnteredView() OVERRIDE;
91   virtual void OnMouseExitedView() OVERRIDE;
92   virtual base::string16 GetAccessibleNameForBubble() OVERRIDE;
93   virtual gfx::Rect GetAnchorRect(
94       views::Widget* anchor_widget,
95       AnchorType anchor_type,
96       AnchorAlignment anchor_alignment) const OVERRIDE;
97   virtual void HideBubble(const views::TrayBubbleView* bubble_view) OVERRIDE;
98 
99   // Overridden from ButtonListener.
100   virtual void ButtonPressed(views::Button* sender,
101                              const ui::Event& event) OVERRIDE;
102 
103   // Overridden from MessageCenterTrayDelegate.
104   virtual void OnMessageCenterTrayChanged() OVERRIDE;
105   virtual bool ShowMessageCenter() OVERRIDE;
106   virtual void HideMessageCenter() OVERRIDE;
107   virtual bool ShowPopups() OVERRIDE;
108   virtual void HidePopups() OVERRIDE;
109   virtual bool ShowNotifierSettings() OVERRIDE;
110   virtual bool IsContextMenuEnabled() const OVERRIDE;
111   virtual message_center::MessageCenterTray* GetMessageCenterTray() OVERRIDE;
112 
113   // Overridden from SimpleMenuModel::Delegate.
114   virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
115   virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
116   virtual bool GetAcceleratorForCommandId(
117       int command_id,
118       ui::Accelerator* accelerator) OVERRIDE;
119   virtual void ExecuteCommand(int command_id, int event_flags) OVERRIDE;
120 
121   message_center::MessageCenter* message_center() const;
122 
123  private:
124   friend class WebNotificationTrayTest;
125 
126   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, WebNotifications);
127   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, WebNotificationPopupBubble);
128   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest,
129                            ManyMessageCenterNotifications);
130   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, ManyPopupNotifications);
131   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, PopupShownOnBothDisplays);
132   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, PopupAndSystemTray);
133   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, PopupAndAutoHideShelf);
134 
135   void UpdateTrayContent();
136 
137   // The actual process to show the message center. Set |show_settings| to true
138   // if the message center should be initialized with the settings visible.
139   // Returns true if the center is successfully created.
140   bool ShowMessageCenterInternal(bool show_settings);
141 
142   // Queries login status and the status area widget to determine visibility of
143   // the message center.
144   bool ShouldShowMessageCenter();
145 
146   // Returns true if it should show the quiet mode menu.
147   bool ShouldShowQuietModeMenu(const ui::Event& event);
148 
149   // Shows the quiet mode menu.
150   void ShowQuietModeMenu(const ui::Event& event);
151 
152   // Creates the menu model for quiet mode and returns it.
153   ui::MenuModel* CreateQuietModeMenu();
154 
message_center_bubble()155   WebNotificationBubbleWrapper* message_center_bubble() const {
156     return message_center_bubble_.get();
157   }
158 
159   // Testing accessors.
160   bool IsPopupVisible() const;
161   message_center::MessageCenterBubble* GetMessageCenterBubbleForTest();
162 
163   scoped_ptr<message_center::MessageCenterTray> message_center_tray_;
164   scoped_ptr<WebNotificationBubbleWrapper> message_center_bubble_;
165   scoped_ptr<message_center::MessagePopupCollection> popup_collection_;
166   WebNotificationButton* button_;
167 
168   bool show_message_center_on_unlock_;
169 
170   bool should_update_tray_content_;
171 
172   // True when the shelf auto hide behavior has to be blocked. Previously
173   // this was done by checking |message_center_bubble_| but actually
174   // the check can be called when creating this object, so it would cause
175   // flickers of the shelf from hidden to shown. See: crbug.com/181213
176   bool should_block_shelf_auto_hide_;
177 
178   scoped_ptr<AshPopupAlignmentDelegate> popup_alignment_delegate_;
179 
180   DISALLOW_COPY_AND_ASSIGN(WebNotificationTray);
181 };
182 
183 }  // namespace ash
184 
185 #endif  // ASH_SYSTEM_WEB_NOTIFICATION_WEB_NOTIFICATION_TRAY_H_
186