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.
5 #ifndef CHROMEOS_DBUS_POWER_POLICY_CONTROLLER_H_
6 #define CHROMEOS_DBUS_POWER_POLICY_CONTROLLER_H_
11 #include "base/basictypes.h"
12 #include "base/compiler_specific.h"
13 #include "chromeos/chromeos_export.h"
14 #include "chromeos/dbus/dbus_thread_manager_observer.h"
15 #include "chromeos/dbus/power_manager/policy.pb.h"
16 #include "chromeos/dbus/power_manager_client.h"
20 class DBusThreadManager;
22 // PowerPolicyController is responsible for sending Chrome's assorted power
23 // management preferences to the Chrome OS power manager.
24 class CHROMEOS_EXPORT PowerPolicyController
25 : public DBusThreadManagerObserver,
26 public PowerManagerClient::Observer {
28 // Note: Do not change these values; they are used by preferences.
31 ACTION_STOP_SESSION = 1,
33 ACTION_DO_NOTHING = 3,
36 // Values of various power-management-related preferences.
40 int ac_screen_dim_delay_ms;
41 int ac_screen_off_delay_ms;
42 int ac_screen_lock_delay_ms;
43 int ac_idle_warning_delay_ms;
45 int battery_screen_dim_delay_ms;
46 int battery_screen_off_delay_ms;
47 int battery_screen_lock_delay_ms;
48 int battery_idle_warning_delay_ms;
49 int battery_idle_delay_ms;
50 Action ac_idle_action;
51 Action battery_idle_action;
52 Action lid_closed_action;
53 bool use_audio_activity;
54 bool use_video_activity;
55 bool allow_screen_wake_locks;
56 bool enable_screen_lock;
57 double presentation_screen_dim_delay_factor;
58 double user_activity_screen_dim_delay_factor;
59 bool wait_for_initial_user_activity;
62 // Returns a string describing |policy|. Useful for tests.
63 static std::string GetPolicyDebugString(
64 const power_manager::PowerManagementPolicy& policy);
66 // Delay in milliseconds between the screen being turned off and the
67 // screen being locked. Used if the |enable_screen_lock| pref is set but
68 // |*_screen_lock_delay_ms| are unset or set to higher values than what
69 // this constant would imply.
70 static const int kScreenLockAfterOffDelayMs;
72 PowerPolicyController(DBusThreadManager* manager, PowerManagerClient* client);
73 virtual ~PowerPolicyController();
75 // Updates |prefs_policy_| with |values| and sends an updated policy.
76 void ApplyPrefs(const PrefValues& values);
78 // Resets |prefs_policy_| to its defaults and sends an updated policy.
81 // Registers a request to temporarily prevent the screen from getting
82 // dimmed or turned off or the system from suspending in response to user
83 // inactivity and sends an updated policy. |reason| is a human-readable
84 // description of the reason the lock was created. Returns a unique ID
85 // that can be passed to RemoveWakeLock() later.
86 int AddScreenWakeLock(const std::string& reason);
87 int AddSystemWakeLock(const std::string& reason);
89 // Unregisters a request previously created via AddScreenWakeLock() or
90 // AddSystemWakeLock() and sends an updated policy.
91 void RemoveWakeLock(int id);
93 // DBusThreadManagerObserver implementation:
94 virtual void OnDBusThreadManagerDestroying(DBusThreadManager* manager)
97 // PowerManagerClient::Observer implementation:
98 virtual void PowerManagerRestarted() OVERRIDE;
101 friend class PowerPrefsTest;
103 typedef std::map<int, std::string> WakeLockMap;
105 // Sends a policy based on |prefs_policy_| to the power manager.
106 void SendCurrentPolicy();
108 // Sends an empty policy to the power manager to reset its configuration.
109 void SendEmptyPolicy();
111 DBusThreadManager* manager_; // not owned
112 PowerManagerClient* client_; // not owned
114 // Policy derived from values passed to ApplyPrefs().
115 power_manager::PowerManagementPolicy prefs_policy_;
117 // Was ApplyPrefs() called?
118 bool prefs_were_set_;
120 // Maps from an ID representing a request to prevent the screen from
121 // getting dimmed or turned off or to prevent the system from suspending
122 // to the reason for the request.
123 WakeLockMap screen_wake_locks_;
124 WakeLockMap system_wake_locks_;
126 // Should entries in |screen_wake_locks_| be honored? If false, screen
127 // wake locks are just treated as system wake locks instead.
128 bool honor_screen_wake_locks_;
130 // Next ID to be used by AddScreenWakeLock() or AddSystemWakeLock().
131 int next_wake_lock_id_;
133 DISALLOW_COPY_AND_ASSIGN(PowerPolicyController);
136 } // namespace chromeos
138 #endif // CHROMEOS_DBUS_POWER_POLICY_CONTROLLER_H_