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      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.
      4 
      5 #ifndef CHROME_BROWSER_CHROMEOS_DBUS_DISPLAY_POWER_SERVICE_PROVIDER_H_
      6 #define CHROME_BROWSER_CHROMEOS_DBUS_DISPLAY_POWER_SERVICE_PROVIDER_H_
      7 
      8 #include <string>
      9 
     10 #include "base/basictypes.h"
     11 #include "base/compiler_specific.h"
     12 #include "base/memory/ref_counted.h"
     13 #include "base/memory/weak_ptr.h"
     14 #include "chrome/browser/chromeos/dbus/cros_dbus_service.h"
     15 #include "dbus/exported_object.h"
     16 
     17 namespace dbus {
     18 class MethodCall;
     19 class Response;
     20 }
     21 
     22 namespace chromeos {
     23 
     24 // This class exports "SetDisplayPower" and "SetDisplaySoftwareDimming"
     25 // D-Bus methods that the power manager calls to instruct Chrome to turn
     26 // various displays on or off or dim them.
     27 class DisplayPowerServiceProvider
     28     : public CrosDBusService::ServiceProviderInterface {
     29  public:
     30   DisplayPowerServiceProvider();
     31   virtual ~DisplayPowerServiceProvider();
     32 
     33   // CrosDBusService::ServiceProviderInterface overrides:
     34   virtual void Start(
     35       scoped_refptr<dbus::ExportedObject> exported_object) OVERRIDE;
     36 
     37  private:
     38   // Called from ExportedObject when a handler is exported as a D-Bus
     39   // method or failed to be exported.
     40   void OnExported(const std::string& interface_name,
     41                   const std::string& method_name,
     42                   bool success);
     43 
     44   // Called on UI thread in response to D-Bus requests.
     45   void SetDisplayPower(dbus::MethodCall* method_call,
     46                        dbus::ExportedObject::ResponseSender response_sender);
     47   void SetDisplaySoftwareDimming(
     48       dbus::MethodCall* method_call,
     49       dbus::ExportedObject::ResponseSender response_sender);
     50 
     51   // Keep this last so that all weak pointers will be invalidated at the
     52   // beginning of destruction.
     53   base::WeakPtrFactory<DisplayPowerServiceProvider> weak_ptr_factory_;
     54 
     55   DISALLOW_COPY_AND_ASSIGN(DisplayPowerServiceProvider);
     56 };
     57 
     58 }  // namespace chromeos
     59 
     60 #endif  // CHROME_BROWSER_CHROMEOS_DBUS_DISPLAY_POWER_SERVICE_PROVIDER_H_
     61