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577efcdc32
This creates platform-dependent monitors to detect when the system time zone changes. On Linux, we use a file watcher to monitor files such as /etc/localtime for changes. On macOS, this uses CFNotificationCenter to be notified by the OS when the time zone changes. Note: the macOS implementation requires running in a process which is running the CoreFoundation event loop. Both the AppKit and Qt chromes are doing so in the UI process, but this means we cannot run this monitor in the WebContent process.
60 lines
1.5 KiB
Text
60 lines
1.5 KiB
Text
/*
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* Copyright (c) 2024, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Platform.h>
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#include <LibCore/TimeZoneWatcher.h>
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#if !defined(AK_OS_MACOS)
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static_assert(false, "This file must only be used for macOS");
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#endif
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#include <CoreFoundation/CoreFoundation.h>
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namespace Core {
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class TimeZoneWatcherImpl final : public TimeZoneWatcher {
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public:
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static ErrorOr<NonnullOwnPtr<TimeZoneWatcherImpl>> create()
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{
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return adopt_own(*new TimeZoneWatcherImpl());
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}
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virtual ~TimeZoneWatcherImpl() override
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{
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CFNotificationCenterRemoveObserver(
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CFNotificationCenterGetLocalCenter(),
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this,
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kCFTimeZoneSystemTimeZoneDidChangeNotification,
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nullptr);
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}
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private:
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explicit TimeZoneWatcherImpl()
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{
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CFNotificationCenterAddObserver(
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CFNotificationCenterGetLocalCenter(),
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this,
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time_zone_changed,
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kCFTimeZoneSystemTimeZoneDidChangeNotification,
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nullptr,
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CFNotificationSuspensionBehaviorDeliverImmediately);
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}
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static void time_zone_changed(CFNotificationCenterRef, void* observer, CFStringRef, void const*, CFDictionaryRef)
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{
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auto const& time_zone_watcher = *reinterpret_cast<TimeZoneWatcherImpl*>(observer);
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if (time_zone_watcher.on_time_zone_changed)
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time_zone_watcher.on_time_zone_changed();
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}
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};
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ErrorOr<NonnullOwnPtr<TimeZoneWatcher>> TimeZoneWatcher::create()
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{
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return TimeZoneWatcherImpl::create();
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}
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}
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