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// 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_SERVICES_DISPLAY_POWER_SERVICE_PROVIDER_H_
#define CHROMEOS_DBUS_SERVICES_DISPLAY_POWER_SERVICE_PROVIDER_H_
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "chromeos/chromeos_export.h"
#include "chromeos/dbus/services/cros_dbus_service.h"
#include "dbus/exported_object.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace dbus {
class MethodCall;
}
namespace chromeos {
// This class exports "SetDisplayPower" and "SetDisplaySoftwareDimming"
// D-Bus methods that the power manager calls to instruct Chrome to turn
// various displays on or off or dim them.
class CHROMEOS_EXPORT DisplayPowerServiceProvider
: public CrosDBusService::ServiceProviderInterface {
public:
class Delegate {
public:
virtual ~Delegate() {}
// Sets the display power state.
virtual void SetDisplayPower(DisplayPowerState power_state) = 0;
// Dims or undims the screen.
virtual void SetDimming(bool dimmed) = 0;
};
explicit DisplayPowerServiceProvider(scoped_ptr<Delegate> delegate);
~DisplayPowerServiceProvider() override;
// CrosDBusService::ServiceProviderInterface overrides:
void Start(scoped_refptr<dbus::ExportedObject> exported_object) override;
private:
// Called from ExportedObject when a handler is exported as a D-Bus
// method or failed to be exported.
void OnExported(const std::string& interface_name,
const std::string& method_name,
bool success);
// Called on UI thread in response to D-Bus requests.
void SetDisplayPower(dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
void SetDisplaySoftwareDimming(
dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
scoped_ptr<Delegate> delegate_;
// Keep this last so that all weak pointers will be invalidated at the
// beginning of destruction.
base::WeakPtrFactory<DisplayPowerServiceProvider> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(DisplayPowerServiceProvider);
};
} // namespace chromeos
#endif // CHROMEOS_DBUS_SERVICES_DISPLAY_POWER_SERVICE_PROVIDER_H_
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