Screensaver implementation for ChromeOS.

chromeos/dbus/power_manager_client.cc

 // Copyright (c) 2012 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.
 
 #include "chromeos/dbus/power_manager_client.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/format_macros.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/message_loop.h"
 #include "base/observer_list.h"
 #include "base/stringprintf.h"
 #include "base/threading/platform_thread.h"
 #include "base/time.h"
 #include "base/timer.h"
 #include "chromeos/dbus/power_manager/input_event.pb.h"
 #include "chromeos/dbus/power_manager/suspend.pb.h"
 #include "chromeos/dbus/power_state_control.pb.h"
 #include "chromeos/dbus/power_supply_properties.pb.h"
 #include "chromeos/dbus/video_activity_update.pb.h"
@@ skipping 770 matching lines @@
   }
 
   virtual void RequestRestart() OVERRIDE {}
   virtual void RequestShutdown() OVERRIDE {}
 
   virtual void CalculateIdleTime(const CalculateIdleTimeCallback& callback)
       OVERRIDE {
     callback.Run(0);
   }
 
-  virtual void RequestIdleNotification(int64 threshold) OVERRIDE {}
+  virtual void RequestIdleNotification(int64 threshold) OVERRIDE {

[Matt Perry, 2013/01/31 00:37:23]

When is this called? I know it's a stub, but it'll do the wrong thing, so maybe
it's better to leave it empty.

[rkc, 2013/01/31 02:15:46]

This will only get called when running ChromeOS_Chrome on Linux. It's used for
easy testing (like all other cros stub methods).

+    MessageLoop::current()->PostDelayedTask(
+        FROM_HERE,
+        base::Bind(&PowerManagerClientStubImpl::TriggerIdleNotify,
+                   base::Unretained(this),
+                   threshold),
+        base::TimeDelta::FromMilliseconds(threshold));
+  }
+
   virtual void NotifyUserActivity(
       const base::TimeTicks& last_activity_time) OVERRIDE {}
   virtual void NotifyVideoActivity(
       const base::TimeTicks& last_activity_time,
       bool is_fullscreen) OVERRIDE {}
   virtual void RequestPowerStateOverrides(
       uint32 request_id,
       base::TimeDelta duration,
       int overrides,
       const PowerStateRequestIdCallback& callback) OVERRIDE {
@@ skipping 42 matching lines @@
     FOR_EACH_OBSERVER(Observer, observers_, PowerChanged(status_));
   }
 
   void SetBrightness(double percent, bool user_initiated) {
     brightness_ = std::min(std::max(0.0, percent), 100.0);
     int brightness_level = static_cast<int>(brightness_);
     FOR_EACH_OBSERVER(Observer, observers_,
                       BrightnessChanged(brightness_level, user_initiated));
   }
 
+  void TriggerIdleNotify(int64 threshold) {
+    FOR_EACH_OBSERVER(Observer, observers_, IdleNotify(threshold));
+  }
+
   bool discharging_;
   int battery_percentage_;
   double brightness_;
   int pause_count_;
   ObserverList<Observer> observers_;
   base::RepeatingTimer<PowerManagerClientStubImpl> timer_;
   PowerSupplyStatus status_;
   uint32 next_request_id_;
 };
 
 PowerManagerClient::PowerManagerClient() {
 }
 
 PowerManagerClient::~PowerManagerClient() {
 }
 
 PowerManagerClient* PowerManagerClient::Create(
     DBusClientImplementationType type,
     dbus::Bus* bus) {
   if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
     return new PowerManagerClientImpl(bus);
   DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
   return new PowerManagerClientStubImpl();
 }
 
 }  // namespace chromeos