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 <string>
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "content/public/browser/power_save_blocker.h"
  12 #include "ui/gfx/native_widget_types.h"
  13
  14 namespace content {
  15
  16 class PowerSaveBlockerImpl : public PowerSaveBlocker {
  17  public:
  18   PowerSaveBlockerImpl(PowerSaveBlockerType type,
  19                        Reason reason,
  20                        const std::string& description);
  21   ~PowerSaveBlockerImpl() override;
  22
  23 #if defined(OS_ANDROID)
  24   // In Android platform, the kPowerSaveBlockPreventDisplaySleep type of
  25   // PowerSaveBlocker should associated with the ViewAndroid,
  26   // so the blocker could be removed by platform if the view isn't visble
  27   void InitDisplaySleepBlocker(gfx::NativeView view_android);
  28 #endif
  29
  30  private:
  31   class Delegate;
  32
  33   // Implementations of this class may need a second object with different
  34   // lifetime than the RAII container, or additional storage. This member is
  35   // here for that purpose. If not used, just define the class as an empty
  36   // RefCounted (or RefCountedThreadSafe) like so to make it compile:
  37   // class PowerSaveBlocker::Delegate
  38   //     : public base::RefCounted<PowerSaveBlocker::Delegate> {
  39   //  private:
  40   //   friend class base::RefCounted<Delegate>;
  41   //   ~Delegate() {}
  42   // };
  43   scoped_refptr<Delegate> delegate_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(PowerSaveBlockerImpl);
  46 };
  47
  48 }  // namespace content
  49
  50 #endif  // CONTENT_BROWSER_POWER_SAVE_BLOCKER_IMPL_H_