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/*
* Copyright (C) 2014 The CyanogenMod Project
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package org.lineageos.eleven.locale;
import android.content.Context;
import android.text.TextUtils;
import android.util.Log;
import org.lineageos.eleven.provider.PropertiesStore;
import com.google.common.annotations.VisibleForTesting;
import java.util.Locale;
import libcore.icu.ICU;
public class LocaleSetManager {
private static final String TAG = LocaleSetManager.class.getSimpleName();
private LocaleSet mCurrentLocales;
private final Context mContext;
public LocaleSetManager(final Context context) {
mContext = context;
}
/**
* @return true if the currently saved locale set needs to be updated
*/
public boolean localeSetNeedsUpdate() {
// if we haven't loaded our current locale, try to retrieve it from the db
if (mCurrentLocales == null) {
updateLocaleSet(getStoredLocaleSet());
}
LocaleSet systemLocaleSet = getSystemLocaleSet();
// if we don't have a stored locale or it is different, return true
if (mCurrentLocales == null ||
!mCurrentLocales.toString().equals(systemLocaleSet.toString())) {
return true;
}
// if our icu version has changed, return true
final String storedICUversion = PropertiesStore.getInstance(mContext)
.getProperty(PropertiesStore.DbProperties.ICU_VERSION);
if (!ICU.getIcuVersion().equals(storedICUversion)) {
Log.d(TAG, "ICU version has changed from: " + storedICUversion + " to "
+ ICU.getIcuVersion());
return true;
}
return false;
}
/**
* Sets up the locale set
* @param localeSet value to set it to
*/
public void updateLocaleSet(LocaleSet localeSet) {
Log.d(TAG, "Locale Changed from: " + mCurrentLocales + " to " + localeSet);
mCurrentLocales = localeSet;
LocaleUtils.getInstance().setLocales(mCurrentLocales);
}
/**
* This takes an old and new locale set and creates a combined locale set. If they share a
* primary then the old one is returned
* @return the combined locale set
*/
private static LocaleSet getCombinedLocaleSet(LocaleSet oldLocales, Locale newLocale) {
Locale prevLocale = null;
if (oldLocales != null) {
prevLocale = oldLocales.getPrimaryLocale();
// If primary locale is unchanged then no change to locale set.
if (newLocale.equals(prevLocale)) {
return oldLocales;
}
}
// Otherwise, construct a new locale set based on the new locale
// and the previous primary locale.
return new LocaleSet(newLocale, prevLocale).normalize();
}
/**
* @return the system locale set
*/
public LocaleSet getSystemLocaleSet() {
final Locale curLocale = getLocale();
return getCombinedLocaleSet(mCurrentLocales, curLocale);
}
/**
* @return the stored locale set
*/
public LocaleSet getStoredLocaleSet() {
final String providerLocaleString = PropertiesStore.getInstance(mContext)
.getProperty(PropertiesStore.DbProperties.LOCALE);
if (TextUtils.isEmpty(providerLocaleString)) {
return null;
}
return LocaleSet.getLocaleSet(providerLocaleString);
}
@VisibleForTesting
protected Locale getLocale() {
return Locale.getDefault();
}
}
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