79 lines
2.5 KiB
Java
79 lines
2.5 KiB
Java
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.timezone;
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import android.annotation.NonNull;
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import android.annotation.Nullable;
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import com.android.internal.annotations.GuardedBy;
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import java.util.Objects;
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/**
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* A class that can be used to find time zones using information like country and offset.
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*
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* @hide
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*/
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public final class TimeZoneFinder {
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private static final Object sLock = new Object();
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@GuardedBy("sLock")
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private static TimeZoneFinder sInstance;
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/**
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* Obtains the singleton instance.
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*/
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@NonNull
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public static TimeZoneFinder getInstance() {
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synchronized (sLock) {
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if (sInstance == null) {
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sInstance = new TimeZoneFinder(com.android.i18n.timezone.TimeZoneFinder
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.getInstance());
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}
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}
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return sInstance;
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}
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@NonNull
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private final com.android.i18n.timezone.TimeZoneFinder mDelegate;
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private TimeZoneFinder(@NonNull com.android.i18n.timezone.TimeZoneFinder delegate) {
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mDelegate = Objects.requireNonNull(delegate);
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}
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/**
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* Returns the IANA rules version associated with the data. If there is no version information
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* or there is a problem reading the file then {@code null} is returned.
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*/
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@Nullable
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public String getIanaVersion() {
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return mDelegate.getIanaVersion();
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}
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/**
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* Returns a {@link CountryTimeZones} object associated with the specified country code.
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* Caching is handled as needed. If the country code is not recognized or there is an error
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* during lookup this method can return null.
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*/
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@Nullable
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public CountryTimeZones lookupCountryTimeZones(@NonNull String countryIso) {
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com.android.i18n.timezone.CountryTimeZones delegate = mDelegate
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.lookupCountryTimeZones(countryIso);
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return delegate == null ? null : new CountryTimeZones(delegate);
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}
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}
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