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 List<LocaleInfo> getAllAssetLocales(Context context, boolean isInDeveloperMode) { 97 final Resources resources = context.getResources(); 98 99 final String[] locales = getSystemAssetLocales(); 100 List<String> localeList = new ArrayList<String>(locales.length); 101 Collections.addAll(localeList, locales); 102 103 Collections.sort(localeList); 104 final String[] specialLocaleCodes = resources.getStringArray(R.array.special_locale_codes); 105 final String[] specialLocaleNames = resources.getStringArray(R.array.special_locale_names); 106 107 final ArrayList<LocaleInfo> localeInfos = new ArrayList<LocaleInfo>(localeList.size()); 108 for (String locale : localeList) { 109 final Locale l = Locale.forLanguageTag(locale.replace('_', '-')); 110 if (l == null || "und".equals(l.getLanguage()) 111 || l.getLanguage().isEmpty() || l.getCountry().isEmpty()) { 112 continue; 113 } 114 // Don't show the pseudolocales unless we're in developer mode. http://b/17190407. 115 if (!isInDeveloperMode && LocaleList.isPseudoLocale(l)) { 116 continue; 117 } 118 119 if (localeInfos.isEmpty()) { 120 if (DEBUG) { 121 Log.v(TAG, "adding initial "+ toTitleCase(l.getDisplayLanguage(l))); 122 } 123 localeInfos.add(new LocaleInfo(toTitleCase(l.getDisplayLanguage(l)), l)); 124 } else { 125 // check previous entry: 126 // same lang and a country -> upgrade to full name and 127 // insert ours with full name 128 // diff lang -> insert ours with lang-only name 129 final LocaleInfo previous = localeInfos.get(localeInfos.size() - 1); 130 if (previous.locale.getLanguage().equals(l.getLanguage()) && 131 !previous.locale.getLanguage().equals("zz")) { 132 if (DEBUG) { 133 Log.v(TAG, "backing up and fixing " + previous.label + " to " + 134 getDisplayName(previous.locale, specialLocaleCodes, specialLocaleNames)); 135 } 136 previous.label = toTitleCase(getDisplayName( 137 previous.locale, specialLocaleCodes, specialLocaleNames)); 138 if (DEBUG) { 139 Log.v(TAG, " and adding "+ toTitleCase( 140 getDisplayName(l, specialLocaleCodes, specialLocaleNames))); 141 } 142 localeInfos.add(new LocaleInfo(toTitleCase( 143 getDisplayName(l, specialLocaleCodes, specialLocaleNames)), l)); 144 } else { 145 String displayName = toTitleCase(l.getDisplayLanguage(l)); 146 if (DEBUG) { 147 Log.v(TAG, "adding "+displayName); 148 } 149 localeInfos.add(new LocaleInfo(displayName, l)); 150 } 151 } 152 } 153 154 Collections.sort(localeInfos); 155 return localeInfos; 156 } 157 158 /** 159 * Constructs an Adapter object containing Locale information. Content is sorted by 160 * {@link LocaleInfo#label}. 161 */ 162 public static ArrayAdapter<LocaleInfo> constructAdapter(Context context) { 163 return constructAdapter(context, R.layout.locale_picker_item, R.id.locale); 164 } 165 166 public static ArrayAdapter<LocaleInfo> constructAdapter(Context context, 167 final int layoutId, final int fieldId) { 168 boolean isInDeveloperMode = Settings.Global.getInt(context.getContentResolver(), 169 Settings.Global.DEVELOPMENT_SETTINGS_ENABLED, 0) != 0; 170 final List<LocaleInfo> localeInfos = getAllAssetLocales(context, isInDeveloperMode); 171 172 final LayoutInflater inflater = 173 (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 174 return new ArrayAdapter<LocaleInfo>(context, layoutId, fieldId, localeInfos) { 175 @Override 176 public View getView(int position, View convertView, ViewGroup parent) { 177 View view; 178 TextView text; 179 if (convertView == null) { 180 view = inflater.inflate(layoutId, parent, false); 181 text = (TextView) view.findViewById(fieldId); 182 view.setTag(text); 183 } else { 184 view = convertView; 185 text = (TextView) view.getTag(); 186 } 187 LocaleInfo item = getItem(position); 188 text.setText(item.toString()); 189 text.setTextLocale(item.getLocale()); 190 191 return view; 192 } 193 }; 194 } 195 196 private static String toTitleCase(String s) { 197 if (s.length() == 0) { 198 return s; 199 } 200 201 return Character.toUpperCase(s.charAt(0)) + s.substring(1); 202 } 203 204 private static String getDisplayName( 205 Locale l, String[] specialLocaleCodes, String[] specialLocaleNames) { 206 String code = l.toString(); 207 208 for (int i = 0; i < specialLocaleCodes.length; i++) { 209 if (specialLocaleCodes[i].equals(code)) { 210 return specialLocaleNames[i]; 211 } 212 } 213 214 return l.getDisplayName(l); 215 } 216 217 @Override 218 public void onActivityCreated(final Bundle savedInstanceState) { 219 super.onActivityCreated(savedInstanceState); 220 final ArrayAdapter<LocaleInfo> adapter = constructAdapter(getActivity()); 221 setListAdapter(adapter); 222 } 223 224 public void setLocaleSelectionListener(LocaleSelectionListener listener) { 225 mListener = listener; 226 } 227 228 @Override 229 public void onResume() { 230 super.onResume(); 231 getListView().requestFocus(); 232 } 233 234 /** 235 * Each listener needs to call {@link #updateLocale(Locale)} to actually change the locale. 236 * 237 * We don't call {@link #updateLocale(Locale)} automatically, as it halt the system for 238 * a moment and some callers won't want it. 239 */ 240 @Override 241 public void onListItemClick(ListView l, View v, int position, long id) { 242 if (mListener != null) { 243 final Locale locale = ((LocaleInfo)getListAdapter().getItem(position)).locale; 244 mListener.onLocaleSelected(locale); 245 } 246 } 247 248 /** 249 * Requests the system to update the system locale. Note that the system looks halted 250 * for a while during the Locale migration, so the caller need to take care of it. 251 * 252 * @see #updateLocales(LocaleList) 253 */ 254 public static void updateLocale(Locale locale) { 255 updateLocales(new LocaleList(locale)); 256 } 257 258 /** 259 * Requests the system to update the list of system locales. 260 * Note that the system looks halted for a while during the Locale migration, 261 * so the caller need to take care of it. 262 */ 263 public static void updateLocales(LocaleList locales) { 264 try { 265 final IActivityManager am = ActivityManager.getService(); 266 final Configuration config = am.getConfiguration(); 267 268 config.setLocales(locales); 269 config.userSetLocale = true; 270 271 am.updatePersistentConfiguration(config); 272 // Trigger the dirty bit for the Settings Provider. 273 BackupManager.dataChanged("com.android.providers.settings"); 274 } catch (RemoteException e) { 275 // Intentionally left blank 276 } 277 } 278 279 /** 280 * Get the locale list. 281 * 282 * @return The locale list. 283 */ 284 public static LocaleList getLocales() { 285 try { 286 return ActivityManager.getService() 287 .getConfiguration().getLocales(); 288 } catch (RemoteException e) { 289 // If something went wrong 290 return LocaleList.getDefault(); 291 } 292 } 293 } 294
