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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 nsUserIdleServiceWin_h_
#define nsUserIdleServiceWin_h_
#include "nsUserIdleService.h"
#include "mozilla/AppShutdown.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 nsUserIdleServiceWin : public nsUserIdleService {
public:
NS_INLINE_DECL_REFCOUNTING_INHERITED(nsUserIdleServiceWin, nsUserIdleService)
bool PollIdleTime(uint32_t* aIdleTime) override;
static already_AddRefed<nsUserIdleServiceWin> GetInstance() {
RefPtr<nsUserIdleServiceWin> idleService =
nsUserIdleService::GetInstance().downcast<nsUserIdleServiceWin>();
if (!idleService) {
// Avoid late instantiation or resurrection during shutdown.
if (mozilla::AppShutdown::IsInOrBeyond(
mozilla::ShutdownPhase::AppShutdownConfirmed)) {
return nullptr;
}
idleService = new nsUserIdleServiceWin();
}
return idleService.forget();
}
protected:
nsUserIdleServiceWin() {}
virtual ~nsUserIdleServiceWin() {}
};
#endif // nsUserIdleServiceWin_h_
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