1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.internal.app; 18 19 import com.android.internal.R; 20 21 import android.app.ActivityManager; 22 import android.app.IActivityManager; 23 import android.app.ListFragment; 24 import android.app.backup.BackupManager; 25 import android.content.Context; 26 import android.content.res.Configuration; 27 import android.content.res.Resources; 28 import android.os.Bundle; 29 import android.os.LocaleList; 30 import android.os.RemoteException; 31 import android.provider.Settings; 32 import android.util.Log; 33 import android.view.LayoutInflater; 34 import android.view.View; 35 import android.view.ViewGroup; 36 import android.widget.ArrayAdapter; 37 import android.widget.ListView; 38 import android.widget.TextView; 39 40 import java.text.Collator; 41 import java.util.Collections; 42 import java.util.List; 43 import java.util.Locale; 44 import java.util.ArrayList; 45 46 public class LocalePicker extends ListFragment { 47 private static final String TAG = "LocalePicker"; 48 private static final boolean DEBUG = false; 49 private static final String[] pseudoLocales = { "en-XA", "ar-XB" }; 50 51 public static interface LocaleSelectionListener { 52 // You can add any argument if you really need it... 53 public void onLocaleSelected(Locale locale); 54 } 55 56 LocaleSelectionListener mListener; // default to null 57 58 public static class LocaleInfo implements Comparable<LocaleInfo> { 59 static final Collator sCollator = Collator.getInstance(); 60 61 String label; 62 final Locale locale; 63 64 public LocaleInfo(String label, Locale locale) { 65 this.label = label; 66 this.locale = locale; 67 } 68 69 public String getLabel() { 70 return label; 71 } 72 73 public Locale getLocale() { 74 return locale; 75 } 76 77 @Override 78 public String toString() { 79 return this.label; 80 } 81 82 @Override 83 public int compareTo(LocaleInfo another) { 84 return sCollator.compare(this.label, another.label); 85 } 86 } 87 88 public static String[] getSystemAssetLocales() { 89 return Resources.getSystem().getAssets().getLocales(); 90 } 91 92 public static String[] getSupportedLocales(Context context) { 93 return context.getResources().getStringArray(R.array.supported_locales); 94 } 95 96 public static String[] getPseudoLocales() { 97 return pseudoLocales; 98 } 99 100 public static List<LocaleInfo> getAllAssetLocales(Context context, boolean isInDeveloperMode) { 101 final Resources resources = context.getResources(); 102 103 final String[] locales = getSystemAssetLocales(); 104 List<String> localeList = new ArrayList<String>(locales.length); 105 Collections.addAll(localeList, locales); 106 107 // Don't show the pseudolocales unless we're in developer mode. http://b/17190407. 108 if (!isInDeveloperMode) { 109 for (String locale : pseudoLocales) { 110 localeList.remove(locale); 111 } 112 } 113 114 Collections.sort(localeList); 115 final String[] specialLocaleCodes = resources.getStringArray(R.array.special_locale_codes); 116 final String[] specialLocaleNames = resources.getStringArray(R.array.special_locale_names); 117 118 final ArrayList<LocaleInfo> localeInfos = new ArrayList<LocaleInfo>(localeList.size()); 119 for (String locale : localeList) { 120 final Locale l = Locale.forLanguageTag(locale.replace('_', '-')); 121 if (l == null || "und".equals(l.getLanguage()) 122 || l.getLanguage().isEmpty() || l.getCountry().isEmpty()) { 123 continue; 124 } 125 126 if (localeInfos.isEmpty()) { 127 if (DEBUG) { 128 Log.v(TAG, "adding initial "+ toTitleCase(l.getDisplayLanguage(l))); 129 } 130 localeInfos.add(new LocaleInfo(toTitleCase(l.getDisplayLanguage(l)), l)); 131 } else { 132 // check previous entry: 133 // same lang and a country -> upgrade to full name and 134 // insert ours with full name 135 // diff lang -> insert ours with lang-only name 136 final LocaleInfo previous = localeInfos.get(localeInfos.size() - 1); 137 if (previous.locale.getLanguage().equals(l.getLanguage()) && 138 !previous.locale.getLanguage().equals("zz")) { 139 if (DEBUG) { 140 Log.v(TAG, "backing up and fixing " + previous.label + " to " + 141 getDisplayName(previous.locale, specialLocaleCodes, specialLocaleNames)); 142 } 143 previous.label = toTitleCase(getDisplayName( 144 previous.locale, specialLocaleCodes, specialLocaleNames)); 145 if (DEBUG) { 146 Log.v(TAG, " and adding "+ toTitleCase( 147 getDisplayName(l, specialLocaleCodes, specialLocaleNames))); 148 } 149 localeInfos.add(new LocaleInfo(toTitleCase( 150 getDisplayName(l, specialLocaleCodes, specialLocaleNames)), l)); 151 } else { 152 String displayName = toTitleCase(l.getDisplayLanguage(l)); 153 if (DEBUG) { 154 Log.v(TAG, "adding "+displayName); 155 } 156 localeInfos.add(new LocaleInfo(displayName, l)); 157 } 158 } 159 } 160 161 Collections.sort(localeInfos); 162 return localeInfos; 163 } 164 165 /** 166 * Constructs an Adapter object containing Locale information. Content is sorted by 167 * {@link LocaleInfo#label}. 168 */ 169 public static ArrayAdapter<LocaleInfo> constructAdapter(Context context) { 170 return constructAdapter(context, R.layout.locale_picker_item, R.id.locale); 171 } 172 173 public static ArrayAdapter<LocaleInfo> constructAdapter(Context context, 174 final int layoutId, final int fieldId) { 175 boolean isInDeveloperMode = Settings.Global.getInt(context.getContentResolver(), 176 Settings.Global.DEVELOPMENT_SETTINGS_ENABLED, 0) != 0; 177 final List<LocaleInfo> localeInfos = getAllAssetLocales(context, isInDeveloperMode); 178 179 final LayoutInflater inflater = 180 (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 181 return new ArrayAdapter<LocaleInfo>(context, layoutId, fieldId, localeInfos) { 182 @Override 183 public View getView(int position, View convertView, ViewGroup parent) { 184 View view; 185 TextView text; 186 if (convertView == null) { 187 view = inflater.inflate(layoutId, parent, false); 188 text = (TextView) view.findViewById(fieldId); 189 view.setTag(text); 190 } else { 191 view = convertView; 192 text = (TextView) view.getTag(); 193 } 194 LocaleInfo item = getItem(position); 195 text.setText(item.toString()); 196 text.setTextLocale(item.getLocale()); 197 198 return view; 199 } 200 }; 201 } 202 203 private static String toTitleCase(String s) { 204 if (s.length() == 0) { 205 return s; 206 } 207 208 return Character.toUpperCase(s.charAt(0)) + s.substring(1); 209 } 210 211 private static String getDisplayName( 212 Locale l, String[] specialLocaleCodes, String[] specialLocaleNames) { 213 String code = l.toString(); 214 215 for (int i = 0; i < specialLocaleCodes.length; i++) { 216 if (specialLocaleCodes[i].equals(code)) { 217 return specialLocaleNames[i]; 218 } 219 } 220 221 return l.getDisplayName(l); 222 } 223 224 @Override 225 public void onActivityCreated(final Bundle savedInstanceState) { 226 super.onActivityCreated(savedInstanceState); 227 final ArrayAdapter<LocaleInfo> adapter = constructAdapter(getActivity()); 228 setListAdapter(adapter); 229 } 230 231 public void setLocaleSelectionListener(LocaleSelectionListener listener) { 232 mListener = listener; 233 } 234 235 @Override 236 public void onResume() { 237 super.onResume(); 238 getListView().requestFocus(); 239 } 240 241 /** 242 * Each listener needs to call {@link #updateLocale(Locale)} to actually change the locale. 243 * 244 * We don't call {@link #updateLocale(Locale)} automatically, as it halt the system for 245 * a moment and some callers won't want it. 246 */ 247 @Override 248 public void onListItemClick(ListView l, View v, int position, long id) { 249 if (mListener != null) { 250 final Locale locale = ((LocaleInfo)getListAdapter().getItem(position)).locale; 251 mListener.onLocaleSelected(locale); 252 } 253 } 254 255 /** 256 * Requests the system to update the system locale. Note that the system looks halted 257 * for a while during the Locale migration, so the caller need to take care of it. 258 * 259 * @see #updateLocales(LocaleList) 260 */ 261 public static void updateLocale(Locale locale) { 262 updateLocales(new LocaleList(locale)); 263 } 264 265 /** 266 * Requests the system to update the list of system locales. 267 * Note that the system looks halted for a while during the Locale migration, 268 * so the caller need to take care of it. 269 */ 270 public static void updateLocales(LocaleList locales) { 271 try { 272 final IActivityManager am = ActivityManager.getService(); 273 final Configuration config = am.getConfiguration(); 274 275 config.setLocales(locales); 276 config.userSetLocale = true; 277 278 am.updatePersistentConfiguration(config); 279 // Trigger the dirty bit for the Settings Provider. 280 BackupManager.dataChanged("com.android.providers.settings"); 281 } catch (RemoteException e) { 282 // Intentionally left blank 283 } 284 } 285 286 /** 287 * Get the locale list. 288 * 289 * @return The locale list. 290 */ 291 public static LocaleList getLocales() { 292 try { 293 return ActivityManager.getService() 294 .getConfiguration().getLocales(); 295 } catch (RemoteException e) { 296 // If something went wrong 297 return LocaleList.getDefault(); 298 } 299 } 300 } 301