/*
* Copyright (C) 2010 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.internal.app;
import com.android.internal.R;
import android.app.ActivityManagerNative;
import android.app.IActivityManager;
import android.app.ListFragment;
import android.app.backup.BackupManager;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.os.Bundle;
import android.os.RemoteException;
import android.provider.Settings;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import java.text.Collator;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
import java.util.ArrayList;
public class LocalePicker extends ListFragment {
private static final String TAG = "LocalePicker";
private static final boolean DEBUG = false;
public static interface LocaleSelectionListener {
// You can add any argument if you really need it...
public void onLocaleSelected(Locale locale);
}
LocaleSelectionListener mListener; // default to null
public static class LocaleInfo implements Comparable<LocaleInfo> {
static final Collator sCollator = Collator.getInstance();
String label;
Locale locale;
public LocaleInfo(String label, Locale locale) {
this.label = label;
this.locale = locale;
}
public String getLabel() {
return label;
}
public Locale getLocale() {
return locale;
}
@Override
public String toString() {
return this.label;
}
@Override
public int compareTo(LocaleInfo another) {
return sCollator.compare(this.label, another.label);
}
}
public static List<LocaleInfo> getAllAssetLocales(Context context, boolean isInDeveloperMode) {
final Resources resources = context.getResources();
final String[] locales = Resources.getSystem().getAssets().getLocales();
List<String> localeList = new ArrayList<String>(locales.length);
Collections.addAll(localeList, locales);
// Don't show the pseudolocales unless we're in developer mode. http://b/17190407.
if (!isInDeveloperMode) {
localeList.remove("ar-XB");
localeList.remove("en-XA");
}
Collections.sort(localeList);
final String[] specialLocaleCodes = resources.getStringArray(R.array.special_locale_codes);
final String[] specialLocaleNames = resources.getStringArray(R.array.special_locale_names);
final ArrayList<LocaleInfo> localeInfos = new ArrayList<LocaleInfo>(localeList.size());
for (String locale : localeList) {
final Locale l = Locale.forLanguageTag(locale.replace('_', '-'));
if (l == null || "und".equals(l.getLanguage())
|| l.getLanguage().isEmpty() || l.getCountry().isEmpty()) {
continue;
}
if (localeInfos.isEmpty()) {
if (DEBUG) {
Log.v(TAG, "adding initial "+ toTitleCase(l.getDisplayLanguage(l)));
}
localeInfos.add(new LocaleInfo(toTitleCase(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.get(localeInfos.size() - 1);
if (previous.locale.getLanguage().equals(l.getLanguage()) &&
!previous.locale.getLanguage().equals("zz")) {
if (DEBUG) {
Log.v(TAG, "backing up and fixing " + previous.label + " to " +
getDisplayName(previous.locale, specialLocaleCodes, specialLocaleNames));
}
previous.label = toTitleCase(getDisplayName(
previous.locale, specialLocaleCodes, specialLocaleNames));
if (DEBUG) {
Log.v(TAG, " and adding "+ toTitleCase(
getDisplayName(l, specialLocaleCodes, specialLocaleNames)));
}
localeInfos.add(new LocaleInfo(toTitleCase(
getDisplayName(l, specialLocaleCodes, specialLocaleNames)), l));
} else {
String displayName = toTitleCase(l.getDisplayLanguage(l));
if (DEBUG) {
Log.v(TAG, "adding "+displayName);
}
localeInfos.add(new LocaleInfo(displayName, l));
}
}
}
Collections.sort(localeInfos);
return localeInfos;
}
/**
* Constructs an Adapter object containing Locale information. Content is sorted by
* {@link LocaleInfo#label}.
*/
public static ArrayAdapter<LocaleInfo> constructAdapter(Context context) {
return constructAdapter(context, R.layout.locale_picker_item, R.id.locale);
}
public static ArrayAdapter<LocaleInfo> constructAdapter(Context context,
final int layoutId, final int fieldId) {
boolean isInDeveloperMode = Settings.Global.getInt(context.getContentResolver(),
Settings.Global.DEVELOPMENT_SETTINGS_ENABLED, 0) != 0;
final List<LocaleInfo> localeInfos = getAllAssetLocales(context, isInDeveloperMode);
final LayoutInflater inflater =
(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
return new ArrayAdapter<LocaleInfo>(context, layoutId, fieldId, localeInfos) {
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view;
TextView text;
if (convertView == null) {
view = inflater.inflate(layoutId, parent, false);
text = (TextView) view.findViewById(fieldId);
view.setTag(text);
} else {
view = convertView;
text = (TextView) view.getTag();
}
LocaleInfo item = getItem(position);
text.setText(item.toString());
text.setTextLocale(item.getLocale());
return view;
}
};
}
private static String toTitleCase(String s) {
if (s.length() == 0) {
return s;
}
return Character.toUpperCase(s.charAt(0)) + s.substring(1);
}
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);
}
@Override
public void onActivityCreated(final Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
final ArrayAdapter<LocaleInfo> adapter = constructAdapter(getActivity());
setListAdapter(adapter);
}
public void setLocaleSelectionListener(LocaleSelectionListener listener) {
mListener = listener;
}
@Override
public void onResume() {
super.onResume();
getListView().requestFocus();
}
/**
* Each listener needs to call {@link #updateLocale(Locale)} to actually change the locale.
*
* We don't call {@link #updateLocale(Locale)} automatically, as it halt the system for
* a moment and some callers won't want it.
*/
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
if (mListener != null) {
final Locale locale = ((LocaleInfo)getListAdapter().getItem(position)).locale;
mListener.onLocaleSelected(locale);
}
}
/**
* Requests the system to update the system locale. Note that the system looks halted
* for a while during the Locale migration, so the caller need to take care of it.
*/
public static void updateLocale(Locale locale) {
try {
IActivityManager am = ActivityManagerNative.getDefault();
Configuration config = am.getConfiguration();
// Will set userSetLocale to indicate this isn't some passing default - the user
// wants this remembered
config.setLocale(locale);
am.updateConfiguration(config);
// Trigger the dirty bit for the Settings Provider.
BackupManager.dataChanged("com.android.providers.settings");
} catch (RemoteException e) {
// Intentionally left blank
}
}
}
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