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1 // Copyright 2014 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_SESSION_TRAY_SESSION_LENGTH_LIMIT_H_ | |
6 #define ASH_SYSTEM_SESSION_TRAY_SESSION_LENGTH_LIMIT_H_ | |
7 | |
8 #include <memory> | |
9 | |
10 #include "ash/system/session/session_length_limit_observer.h" | |
11 #include "ash/system/tray/system_tray_item.h" | |
12 #include "base/macros.h" | |
13 #include "base/strings/string16.h" | |
14 #include "base/time/time.h" | |
15 #include "base/timer/timer.h" | |
16 | |
17 namespace ash { | |
18 namespace test { | |
19 class TraySessionLengthLimitTest; | |
20 } | |
21 | |
22 class LabelTrayView; | |
23 | |
24 // Adds a countdown timer to the system tray if the session length is limited. | |
25 class ASH_EXPORT TraySessionLengthLimit : public SystemTrayItem, | |
26 public SessionLengthLimitObserver { | |
27 public: | |
28 enum LimitState { LIMIT_NONE, LIMIT_SET, LIMIT_EXPIRING_SOON }; | |
29 | |
30 explicit TraySessionLengthLimit(SystemTray* system_tray); | |
31 ~TraySessionLengthLimit() override; | |
32 | |
33 // SystemTrayItem: | |
34 views::View* CreateDefaultView(LoginStatus status) override; | |
35 void DestroyDefaultView() override; | |
36 | |
37 // SessionLengthLimitObserver: | |
38 void OnSessionStartTimeChanged() override; | |
39 void OnSessionLengthLimitChanged() override; | |
40 | |
41 private: | |
42 friend class test::TraySessionLengthLimitTest; | |
43 | |
44 static const char kNotificationId[]; | |
45 | |
46 // Update state, notification and tray bubble view. Called by the | |
47 // RepeatingTimer in regular intervals and also by OnSession*Changed(). | |
48 void Update(); | |
49 | |
50 // Recalculate |limit_state_| and |remaining_session_time_|. | |
51 void UpdateState(); | |
52 | |
53 void UpdateNotification(); | |
54 void UpdateTrayBubbleView() const; | |
55 | |
56 // These require that the state has been updated before. | |
57 base::string16 ComposeNotificationMessage() const; | |
58 base::string16 ComposeTrayBubbleMessage() const; | |
59 | |
60 base::TimeTicks session_start_time_; | |
61 base::TimeDelta time_limit_; | |
62 base::TimeDelta remaining_session_time_; | |
63 | |
64 LimitState limit_state_; // Current state. | |
65 LimitState last_limit_state_; // State of last notification update. | |
66 | |
67 LabelTrayView* tray_bubble_view_; | |
68 std::unique_ptr<base::RepeatingTimer> timer_; | |
69 | |
70 DISALLOW_COPY_AND_ASSIGN(TraySessionLengthLimit); | |
71 }; | |
72 | |
73 } // namespace ash | |
74 | |
75 #endif // ASH_SYSTEM_SESSION_TRAY_SESSION_LENGTH_LIMIT_H_ | |
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