chromeos: Add DisplayPowerServiceProvider.

chrome/browser/chromeos/dbus/display_power_service_provider.cc

+// 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.
+
+#include "chrome/browser/chromeos/dbus/display_power_service_provider.h"
+
+#include "ash/shell.h"
+#include "ash/wm/user_activity_detector.h"
+#include "base/bind.h"
+#include "chromeos/display/output_configurator.h"
+#include "dbus/bus.h"
+#include "dbus/message.h"
+#include "third_party/cros_system_api/dbus/service_constants.h"
+
+namespace chromeos {
+
+DisplayPowerServiceProvider::DisplayPowerServiceProvider()
+    : weak_ptr_factory_(this) {
+}
+
+DisplayPowerServiceProvider::~DisplayPowerServiceProvider() {}
+
+void DisplayPowerServiceProvider::Start(
+    scoped_refptr<dbus::ExportedObject> exported_object) {
+  exported_object->ExportMethod(
+      kLibCrosServiceInterface,
+      kSetDisplayPower,
+      base::Bind(&DisplayPowerServiceProvider::SetDisplayPower,
+                 weak_ptr_factory_.GetWeakPtr()),
+      base::Bind(&DisplayPowerServiceProvider::OnExported,
+                 weak_ptr_factory_.GetWeakPtr()));
+}
+
+void DisplayPowerServiceProvider::OnExported(const std::string& interface_name,
+                                             const std::string& method_name,
+                                             bool success) {
+  if (!success) {
+    LOG(ERROR) << "Failed to export " << interface_name << "."
+               << method_name;
+  }
+}
+
+void DisplayPowerServiceProvider::SetDisplayPower(
+    dbus::MethodCall* method_call,
+    dbus::ExportedObject::ResponseSender response_sender) {
+  dbus::MessageReader reader(method_call);
+  int int_state = 0;
+  if (reader.PopInt32(&int_state)) {
+    // Turning displays off when the device becomes idle or on just before
+    // we suspend may trigger a mouse move, which would then be incorrectly
+    // reported as user activity.  Let the UserActivityDetector
+    // know so that it can ignore such events.
+    ash::Shell::GetInstance()->user_activity_detector()->
+        OnDisplayPowerChanging();
+
+    DisplayPowerState state = static_cast<DisplayPowerState>(int_state);
+    ash::Shell::GetInstance()->output_configurator()->SetDisplayPower(
+        state, false);
+  } else {
+    LOG(ERROR) << "Unable to parse " << kSetDisplayPower << " request";
+  }
+
+  response_sender.Run(dbus::Response::FromMethodCall(method_call));
+}
+
+}  // namespace chromeos