зеркало из https://github.com/mozilla/gecko-dev.git
90 строки
2.9 KiB
C++
90 строки
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_intl_AppDateTimeFormat_h
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#define mozilla_intl_AppDateTimeFormat_h
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#include <time.h>
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#include "gtest/MozGtestFriend.h"
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#include "nsTHashMap.h"
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#include "nsString.h"
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#include "prtime.h"
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#include "mozilla/intl/DateTimeFormat.h"
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namespace mozilla::intl {
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/**
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* Get a DateTimeFormat for use in Gecko. This specialized DateTimeFormat
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* respects the user's OS and app preferences, and provides caching of the
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* underlying mozilla::intl resources.
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*
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* This class is not thread-safe as it lazily initializes a cache without
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* any type of multi-threaded protections.
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*/
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class AppDateTimeFormat {
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public:
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/**
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* Format a DateTime using the applied app and OS-level preferences, with a
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* style bag and the PRTime.
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*/
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static nsresult Format(const DateTimeFormat::StyleBag& aStyle,
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const PRTime aPrTime, nsAString& aStringOut);
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/**
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* Format a DateTime using the applied app and OS-level preferences, with a
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* style bag and the PRExplodedTime.
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*/
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static nsresult Format(const DateTimeFormat::StyleBag& aStyle,
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const PRExplodedTime* aExplodedTime,
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nsAString& aStringOut);
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/**
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* Format a DateTime using the applied app and OS-level preferences, with a
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* components bag and the PRExplodedTime.
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*/
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static nsresult Format(const DateTimeFormat::ComponentsBag& aComponents,
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const PRExplodedTime* aExplodedTime,
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nsAString& aStringOut);
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/**
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* If the app locale changes, the cached locale needs to be reset.
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*/
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static void ClearLocaleCache();
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static void Shutdown();
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private:
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AppDateTimeFormat() = delete;
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static nsresult Initialize();
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static void DeleteCache();
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static const size_t kMaxCachedFormats = 15;
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FRIEND_TEST(AppDateTimeFormat, FormatPRExplodedTime);
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FRIEND_TEST(AppDateTimeFormat, DateFormatSelectors);
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FRIEND_TEST(AppDateTimeFormat, FormatPRExplodedTimeForeign);
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FRIEND_TEST(AppDateTimeFormat, DateFormatSelectorsForeign);
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/**
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* Format a DateTime using the applied app and OS-level preferences, with a
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* components bag and the PRExplodedTime.
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*/
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static nsresult Format(const DateTimeFormat::StyleBag& aStyle,
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const double aUnixEpoch,
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const PRTimeParameters* aTimeParameters,
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nsAString& aStringOut);
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static void BuildTimeZoneString(const PRTimeParameters& aTimeParameters,
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nsAString& aStringOut);
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static nsCString* sLocale;
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static nsTHashMap<nsCStringHashKey, UniquePtr<DateTimeFormat>>* sFormatCache;
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};
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} // namespace mozilla::intl
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#endif /* mozilla_intl_AppDateTimeFormat_h */
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