content/browser/power_save_blocker_impl.h

   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 CONTENT_BROWSER_POWER_SAVE_BLOCKER_IMPL_H_
   6 #define CONTENT_BROWSER_POWER_SAVE_BLOCKER_IMPL_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "content/public/browser/power_save_blocker.h"
  10 #include "ui/gfx/native_widget_types.h"
  11
  12 namespace content {
  13
  14 class PowerSaveBlockerImpl : public PowerSaveBlocker {
  15  public:
  16   PowerSaveBlockerImpl(PowerSaveBlockerType type, const std::string& reason);
  17   virtual ~PowerSaveBlockerImpl();
  18
  19 #if defined(OS_ANDROID)
  20   // In Android platform, the kPowerSaveBlockPreventDisplaySleep type of
  21   // PowerSaveBlocker should associated with the ViewAndroid,
  22   // so the blocker could be removed by platform if the view isn't visble
  23   void InitDisplaySleepBlocker(gfx::NativeView view_android);
  24 #endif
  25
  26  private:
  27   class Delegate;
  28
  29   // Implementations of this class may need a second object with different
  30   // lifetime than the RAII container, or additional storage. This member is
  31   // here for that purpose. If not used, just define the class as an empty
  32   // RefCounted (or RefCountedThreadSafe) like so to make it compile:
  33   // class PowerSaveBlocker::Delegate
  34   //     : public base::RefCounted<PowerSaveBlocker::Delegate> {
  35   //  private:
  36   //   friend class base::RefCounted<Delegate>;
  37   //   ~Delegate() {}
  38   // };
  39   scoped_refptr<Delegate> delegate_;
  40
  41   DISALLOW_COPY_AND_ASSIGN(PowerSaveBlockerImpl);
  42 };
  43
  44 }  // namespace content
  45
  46 #endif  // CONTENT_BROWSER_POWER_SAVE_BLOCKER_IMPL_H_