chromeos: Add power management policy prefs.

chromeos/dbus/power_policy_controller.h

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROMEOS_DBUS_POWER_POLICY_CONTROLLER_H_
+#define CHROMEOS_DBUS_POWER_POLICY_CONTROLLER_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/prefs/public/pref_service_base.h"
+#include "chromeos/chromeos_export.h"
+#include "chromeos/dbus/dbus_thread_manager_observer.h"
+#include "chromeos/dbus/power_manager/policy.pb.h"
+#include "chromeos/dbus/power_manager_client.h"
+
+namespace chromeos {
+
+class DBusThreadManager;
+
+// PowerPolicyController is responsible for sending Chrome's assorted power
+// management preferences to the Chrome OS power manager.
+class CHROMEOS_EXPORT PowerPolicyController
+    : public DBusThreadManagerObserver,
+      public PowerManagerClient::Observer {
+ public:
+  // Note: Do not change these values; they are used by preferences.
+  enum Action {
+    ACTION_SUSPEND      = 0,
+    ACTION_STOP_SESSION = 1,
+    ACTION_SHUT_DOWN    = 2,
+    ACTION_DO_NOTHING   = 3,
+  };
+
+  PowerPolicyController(DBusThreadManager* manager, PowerManagerClient* client);
+  ~PowerPolicyController();
+
+  // Sends an updated policy to the power manager based on the current
+  // values of the passed-in prefs.
+  void UpdatePolicyFromPrefs(
+      const PrefServiceBase::Preference& ac_screen_dim_delay_ms_pref,
+      const PrefServiceBase::Preference& ac_screen_off_delay_ms_pref,
+      const PrefServiceBase::Preference& ac_screen_lock_delay_ms_pref,
+      const PrefServiceBase::Preference& ac_idle_delay_ms_pref,
+      const PrefServiceBase::Preference& battery_screen_dim_delay_ms_pref,
+      const PrefServiceBase::Preference& battery_screen_off_delay_ms_pref,
+      const PrefServiceBase::Preference& battery_screen_lock_delay_ms_pref,
+      const PrefServiceBase::Preference& battery_idle_delay_ms_pref,
+      const PrefServiceBase::Preference& idle_action_pref,
+      const PrefServiceBase::Preference& lid_closed_action_pref,
+      const PrefServiceBase::Preference& use_audio_activity_pref,
+      const PrefServiceBase::Preference& use_video_activity_pref,
+      const PrefServiceBase::Preference& presentation_idle_delay_factor_pref);
+
+  // DBusThreadManagerObserver implementation:
+  virtual void OnDBusThreadManagerDestroying(DBusThreadManager* manager);
+
+  // PowerManagerClient::Observer implementation:
+  virtual void PowerManagerRestarted() OVERRIDE;
+
+ private:
+  // Sends a policy based on |prefs_policy_| to the power manager.
+  void SendCurrentPolicy();
+
+  // Sends an empty policy to the power manager to reset its configuration.
+  void SendEmptyPolicy();
+
+  DBusThreadManager* manager_;  // not owned
+  PowerManagerClient* client_;  // not owned
+
+  // Policy specified by the prefs that were last passed to
+  // UpdatePolicyFromPrefs().
+  power_manager::PowerManagementPolicy prefs_policy_;
+
+  DISALLOW_COPY_AND_ASSIGN(PowerPolicyController);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_DBUS_POWER_POLICY_CONTROLLER_H_