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/*
* Copyright (C) 2013 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 com.android.settings.accessibility;
import android.content.Context;
import android.content.res.Resources;
import android.preference.ListPreference;
import android.util.AttributeSet;
import com.android.settings.R;
import java.text.Collator;
import java.util.Arrays;
import java.util.Locale;
/**
* List preference that allows the user to pick a locale from the list of
* supported device locales.
*/
public class LocalePreference extends ListPreference {
public LocalePreference(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
public LocalePreference(Context context) {
super(context);
init(context);
}
public void init(Context context) {
final String[] systemLocales = Resources.getSystem().getAssets().getLocales();
Arrays.sort(systemLocales);
final Resources resources = context.getResources();
final String[] specialLocaleCodes = resources.getStringArray(
com.android.internal.R.array.special_locale_codes);
final String[] specialLocaleNames = resources.getStringArray(
com.android.internal.R.array.special_locale_names);
int finalSize = 0;
final int origSize = systemLocales.length;
final LocaleInfo[] localeInfos = new LocaleInfo[origSize];
for (int i = 0; i < origSize; i++) {
final String localeStr = systemLocales[i];
final int len = localeStr.length();
if (len != 5) {
continue;
}
final String language = localeStr.substring(0, 2);
final String country = localeStr.substring(3, 5);
final Locale l = new Locale(language, country);
if (finalSize == 0) {
localeInfos[finalSize++] = new LocaleInfo(l.getDisplayLanguage(l), l);
} else {
// check previous entry:
// same lang and a country -> upgrade to full name and
// insert ours with full name
// diff lang -> insert ours with lang-only name
final LocaleInfo previous = localeInfos[finalSize - 1];
if (previous.locale.getLanguage().equals(language)
&& !previous.locale.getLanguage().equals("zz")) {
previous.label = getDisplayName(
localeInfos[finalSize - 1].locale, specialLocaleCodes,
specialLocaleNames);
localeInfos[finalSize++] = new LocaleInfo(getDisplayName(l,
specialLocaleCodes, specialLocaleNames), l);
} else {
final String displayName;
if (localeStr.equals("zz_ZZ")) {
displayName = "[Developer] Accented English";
} else if (localeStr.equals("zz_ZY")) {
displayName = "[Developer] Fake Bi-Directional";
} else {
displayName = l.getDisplayLanguage(l);
}
localeInfos[finalSize++] = new LocaleInfo(displayName, l);
}
}
}
final CharSequence[] entries = new CharSequence[finalSize + 1];
final CharSequence[] entryValues = new CharSequence[finalSize + 1];
Arrays.sort(localeInfos, 0, finalSize);
entries[0] = resources.getString(R.string.locale_default);
entryValues[0] = "";
for (int i = 0; i < finalSize; i++) {
final LocaleInfo info = localeInfos[i];
entries[i + 1] = info.toString();
entryValues[i + 1] = info.locale.toString();
}
setEntries(entries);
setEntryValues(entryValues);
}
private static String getDisplayName(
Locale l, String[] specialLocaleCodes, String[] specialLocaleNames) {
String code = l.toString();
for (int i = 0; i < specialLocaleCodes.length; i++) {
if (specialLocaleCodes[i].equals(code)) {
return specialLocaleNames[i];
}
}
return l.getDisplayName(l);
}
private static class LocaleInfo implements Comparable<LocaleInfo> {
private static final Collator sCollator = Collator.getInstance();
public String label;
public Locale locale;
public LocaleInfo(String label, Locale locale) {
this.label = label;
this.locale = locale;
}
@Override
public String toString() {
return label;
}
@Override
public int compareTo(LocaleInfo another) {
return sCollator.compare(this.label, another.label);
}
}
}
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