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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 CONTENT_BROWSER_POWER_SAVE_BLOCKER_IMPL_H_
#define CONTENT_BROWSER_POWER_SAVE_BLOCKER_IMPL_H_
#include <string>
#include "base/memory/ref_counted.h"
#include "content/public/browser/power_save_blocker.h"
namespace content {
class WebContents;
class PowerSaveBlockerImpl : public PowerSaveBlocker {
public:
PowerSaveBlockerImpl(PowerSaveBlockerType type,
Reason reason,
const std::string& description);
~PowerSaveBlockerImpl() override;
#if defined(OS_ANDROID)
// In Android platform, the kPowerSaveBlockPreventDisplaySleep type of
// PowerSaveBlocker should associated with a WebContents, so the blocker
// could be removed by platform if the WebContents is hidden.
void InitDisplaySleepBlocker(WebContents* web_contents);
#endif
private:
class Delegate;
// Implementations of this class may need a second object with different
// lifetime than the RAII container, or additional storage. This member is
// here for that purpose. If not used, just define the class as an empty
// RefCounted (or RefCountedThreadSafe) like so to make it compile:
// class PowerSaveBlocker::Delegate
// : public base::RefCounted<PowerSaveBlocker::Delegate> {
// private:
// friend class base::RefCounted<Delegate>;
// ~Delegate() {}
// };
scoped_refptr<Delegate> delegate_;
#if defined(USE_X11)
// Since display sleep prevention also implies system suspend prevention, for
// the Linux FreeDesktop API case, there needs to be a second delegate to
// block system suspend when screen saver / display sleep is blocked.
scoped_refptr<Delegate> freedesktop_suspend_delegate_;
#endif
DISALLOW_COPY_AND_ASSIGN(PowerSaveBlockerImpl);
};
} // namespace content
#endif // CONTENT_BROWSER_POWER_SAVE_BLOCKER_IMPL_H_