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-rw-r--r--widget/windows/nsUserIdleServiceWin.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/widget/windows/nsUserIdleServiceWin.h b/widget/windows/nsUserIdleServiceWin.h
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+++ b/widget/windows/nsUserIdleServiceWin.h
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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__