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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsIdleServiceWin_h__
#define nsIdleServiceWin_h__
#include "nsIdleService.h"
/* NOTE: Compare of GetTickCount() could overflow. This corrects for
* overflow situations.
***/
#ifndef SAFE_COMPARE_EVEN_WITH_WRAPPING
#define SAFE_COMPARE_EVEN_WITH_WRAPPING(A, B) (((int)((long)A - (long)B) & 0xFFFFFFFF))
#endif
class nsIdleServiceWin : public nsIdleService
{
public:
NS_DECL_ISUPPORTS_INHERITED
bool PollIdleTime(uint32_t* aIdleTime);
static already_AddRefed<nsIdleServiceWin> GetInstance()
{
nsRefPtr<nsIdleServiceWin> idleService =
nsIdleService::GetInstance().downcast<nsIdleServiceWin>();
if (!idleService) {
idleService = new nsIdleServiceWin();
}
return idleService.forget();
}
protected:
nsIdleServiceWin() { }
virtual ~nsIdleServiceWin() { }
bool UsePollMode();
};
#endif // nsIdleServiceWin_h__
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