55 lines
1.9 KiB
Java
55 lines
1.9 KiB
Java
/*
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* Copyright (C) 2013 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 com.android.inputmethod.latin.utils;
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import android.content.res.Configuration;
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import android.content.res.Resources;
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import java.util.Locale;
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public abstract class RunInLocale<T> {
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private static final Object sLockForRunInLocale = new Object();
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protected abstract T job(final Resources res);
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/**
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* Execute {@link #job(Resources)} method in specified system locale exclusively.
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*
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* @param res the resources to use.
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* @param newLocale the locale to change to.
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* @return the value returned from {@link #job(Resources)}.
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*/
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public T runInLocale(final Resources res, final Locale newLocale) {
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synchronized (sLockForRunInLocale) {
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final Configuration conf = res.getConfiguration();
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final Locale oldLocale = conf.locale;
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final boolean needsChange = (newLocale != null && !newLocale.equals(oldLocale));
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try {
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if (needsChange) {
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conf.locale = newLocale;
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res.updateConfiguration(conf, null);
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}
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return job(res);
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} finally {
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if (needsChange) {
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conf.locale = oldLocale;
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res.updateConfiguration(conf, null);
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}
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}
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}
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}
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}
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