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 17package com.android.internal.app; 18 19import com.android.internal.R; 20 21import android.app.ActivityManagerNative; 22import android.app.IActivityManager; 23import android.app.ListFragment; 24import android.app.backup.BackupManager; 25import android.content.Context; 26import android.content.res.Configuration; 27import android.content.res.Resources; 28import android.os.Bundle; 29import android.os.RemoteException; 30import android.util.Log; 31import android.view.LayoutInflater; 32import android.view.View; 33import android.view.ViewGroup; 34import android.widget.ArrayAdapter; 35import android.widget.ListView; 36import android.widget.TextView; 37 38import java.text.Collator; 39import java.util.Arrays; 40import java.util.Locale; 41 42public class LocalePicker extends ListFragment { 43 private static final String TAG = "LocalePicker"; 44 private static final boolean DEBUG = false; 45 46 public static interface LocaleSelectionListener { 47 // You can add any argument if you really need it... 48 public void onLocaleSelected(Locale locale); 49 } 50 51 LocaleSelectionListener mListener; // default to null 52 53 public static class LocaleInfo implements Comparable<LocaleInfo> { 54 static final Collator sCollator = Collator.getInstance(); 55 56 String label; 57 Locale locale; 58 59 public LocaleInfo(String label, Locale locale) { 60 this.label = label; 61 this.locale = locale; 62 } 63 64 public String getLabel() { 65 return label; 66 } 67 68 public Locale getLocale() { 69 return locale; 70 } 71 72 @Override 73 public String toString() { 74 return this.label; 75 } 76 77 @Override 78 public int compareTo(LocaleInfo another) { 79 return sCollator.compare(this.label, another.label); 80 } 81 } 82 83 /** 84 * Constructs an Adapter object containing Locale information. Content is sorted by 85 * {@link LocaleInfo#label}. 86 */ 87 public static ArrayAdapter<LocaleInfo> constructAdapter(Context context) { 88 return constructAdapter(context, R.layout.locale_picker_item, R.id.locale); 89 } 90 91 public static ArrayAdapter<LocaleInfo> constructAdapter(Context context, 92 final int layoutId, final int fieldId) { 93 final Resources resources = context.getResources(); 94 final String[] locales = Resources.getSystem().getAssets().getLocales(); 95 final String[] specialLocaleCodes = resources.getStringArray(R.array.special_locale_codes); 96 final String[] specialLocaleNames = resources.getStringArray(R.array.special_locale_names); 97 Arrays.sort(locales); 98 final int origSize = locales.length; 99 final LocaleInfo[] preprocess = new LocaleInfo[origSize]; 100 int finalSize = 0; 101 for (int i = 0 ; i < origSize; i++ ) { 102 final String s = locales[i]; 103 final int len = s.length(); 104 if (len == 5) { 105 String language = s.substring(0, 2); 106 String country = s.substring(3, 5); 107 final Locale l = new Locale(language, country); 108 109 if (finalSize == 0) { 110 if (DEBUG) { 111 Log.v(TAG, "adding initial "+ toTitleCase(l.getDisplayLanguage(l))); 112 } 113 preprocess[finalSize++] = 114 new LocaleInfo(toTitleCase(l.getDisplayLanguage(l)), l); 115 } else { 116 // check previous entry: 117 // same lang and a country -> upgrade to full name and 118 // insert ours with full name 119 // diff lang -> insert ours with lang-only name 120 if (preprocess[finalSize-1].locale.getLanguage().equals( 121 language)) { 122 if (DEBUG) { 123 Log.v(TAG, "backing up and fixing "+ 124 preprocess[finalSize-1].label+" to "+ 125 getDisplayName(preprocess[finalSize-1].locale, 126 specialLocaleCodes, specialLocaleNames)); 127 } 128 preprocess[finalSize-1].label = toTitleCase( 129 getDisplayName(preprocess[finalSize-1].locale, 130 specialLocaleCodes, specialLocaleNames)); 131 if (DEBUG) { 132 Log.v(TAG, " and adding "+ toTitleCase( 133 getDisplayName(l, specialLocaleCodes, specialLocaleNames))); 134 } 135 preprocess[finalSize++] = 136 new LocaleInfo(toTitleCase( 137 getDisplayName( 138 l, specialLocaleCodes, specialLocaleNames)), l); 139 } else { 140 String displayName; 141 if (s.equals("zz_ZZ")) { 142 displayName = "Pseudo..."; 143 } else { 144 displayName = toTitleCase(l.getDisplayLanguage(l)); 145 } 146 if (DEBUG) { 147 Log.v(TAG, "adding "+displayName); 148 } 149 preprocess[finalSize++] = new LocaleInfo(displayName, l); 150 } 151 } 152 } 153 } 154 155 final LocaleInfo[] localeInfos = new LocaleInfo[finalSize]; 156 for (int i = 0; i < finalSize; i++) { 157 localeInfos[i] = preprocess[i]; 158 } 159 Arrays.sort(localeInfos); 160 161 final LayoutInflater inflater = 162 (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 163 return new ArrayAdapter<LocaleInfo>(context, layoutId, fieldId, localeInfos) { 164 @Override 165 public View getView(int position, View convertView, ViewGroup parent) { 166 View view; 167 TextView text; 168 if (convertView == null) { 169 view = inflater.inflate(layoutId, parent, false); 170 text = (TextView) view.findViewById(fieldId); 171 view.setTag(text); 172 } else { 173 view = convertView; 174 text = (TextView) view.getTag(); 175 } 176 LocaleInfo item = getItem(position); 177 text.setText(item.toString()); 178 text.setTextLocale(item.getLocale()); 179 180 return view; 181 } 182 }; 183 } 184 185 private static String toTitleCase(String s) { 186 if (s.length() == 0) { 187 return s; 188 } 189 190 return Character.toUpperCase(s.charAt(0)) + s.substring(1); 191 } 192 193 private static String getDisplayName( 194 Locale l, String[] specialLocaleCodes, String[] specialLocaleNames) { 195 String code = l.toString(); 196 197 for (int i = 0; i < specialLocaleCodes.length; i++) { 198 if (specialLocaleCodes[i].equals(code)) { 199 return specialLocaleNames[i]; 200 } 201 } 202 203 return l.getDisplayName(l); 204 } 205 206 @Override 207 public void onActivityCreated(final Bundle savedInstanceState) { 208 super.onActivityCreated(savedInstanceState); 209 final ArrayAdapter<LocaleInfo> adapter = constructAdapter(getActivity()); 210 setListAdapter(adapter); 211 } 212 213 public void setLocaleSelectionListener(LocaleSelectionListener listener) { 214 mListener = listener; 215 } 216 217 @Override 218 public void onResume() { 219 super.onResume(); 220 getListView().requestFocus(); 221 } 222 223 /** 224 * Each listener needs to call {@link #updateLocale(Locale)} to actually change the locale. 225 * 226 * We don't call {@link #updateLocale(Locale)} automatically, as it halt the system for 227 * a moment and some callers won't want it. 228 */ 229 @Override 230 public void onListItemClick(ListView l, View v, int position, long id) { 231 if (mListener != null) { 232 final Locale locale = ((LocaleInfo)getListAdapter().getItem(position)).locale; 233 mListener.onLocaleSelected(locale); 234 } 235 } 236 237 /** 238 * Requests the system to update the system locale. Note that the system looks halted 239 * for a while during the Locale migration, so the caller need to take care of it. 240 */ 241 public static void updateLocale(Locale locale) { 242 try { 243 IActivityManager am = ActivityManagerNative.getDefault(); 244 Configuration config = am.getConfiguration(); 245 246 // Will set userSetLocale to indicate this isn't some passing default - the user 247 // wants this remembered 248 config.setLocale(locale); 249 250 am.updateConfiguration(config); 251 // Trigger the dirty bit for the Settings Provider. 252 BackupManager.dataChanged("com.android.providers.settings"); 253 } catch (RemoteException e) { 254 // Intentionally left blank 255 } 256 } 257} 258