src/com/hughes/android/dictionary/DictionaryApplication.java

   1 // Copyright 2011 Google Inc. All Rights Reserved.
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 package com.hughes.android.dictionary;
  16
  17 import android.app.Application;
  18 import android.content.Context;
  19 import android.content.Intent;
  20 import android.content.SharedPreferences;
  21 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
  22 import android.net.Uri;
  23 import android.os.Environment;
  24 import android.preference.PreferenceManager;
  25 import android.support.v4.view.MenuItemCompat;
  26 import android.util.Log;
  27 import android.util.TypedValue;
  28 import android.view.Menu;
  29 import android.view.MenuItem;
  30 import android.view.MenuItem.OnMenuItemClickListener;
  31 import android.view.View;
  32 import android.widget.Button;
  33 import android.widget.ImageButton;
  34 import android.widget.ImageView.ScaleType;
  35
  36 import com.hughes.android.dictionary.DictionaryInfo.IndexInfo;
  37 import com.hughes.android.dictionary.engine.Dictionary;
  38 import com.hughes.android.dictionary.engine.Language;
  39 import com.hughes.android.dictionary.engine.Language.LanguageResources;
  40 import com.hughes.android.dictionary.engine.TransliteratorManager;
  41 import com.hughes.android.util.PersistentObjectCache;
  42 import com.hughes.util.ListUtil;
  43 import com.ibm.icu.text.Collator;
  44
  45 import java.io.BufferedReader;
  46 import java.io.File;
  47 import java.io.IOException;
  48 import java.io.InputStreamReader;
  49 import java.io.Serializable;
  50 import java.util.ArrayList;
  51 import java.util.Collections;
  52 import java.util.Comparator;
  53 import java.util.LinkedHashMap;
  54 import java.util.List;
  55 import java.util.Locale;
  56 import java.util.Map;
  57
  58 public class DictionaryApplication extends Application {
  59
  60     static final String LOG = "QuickDicApp";
  61
  62     // Static, determined by resources (and locale).
  63     // Unordered.
  64     static Map<String, DictionaryInfo> DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO = null;
  65
  66     enum Theme {
  67         DEFAULT(R.style.Theme_Default,
  68                 R.style.Theme_Default_TokenRow_Fg,
  69                 R.color.theme_default_token_row_fg,
  70                 R.drawable.theme_default_token_row_main_bg,
  71                 R.drawable.theme_default_token_row_other_bg,
  72                 R.drawable.theme_default_normal_row_bg),
  73
  74         LIGHT(R.style.Theme_Light,
  75                 R.style.Theme_Light_TokenRow_Fg,
  76                 R.color.theme_light_token_row_fg,
  77                 R.drawable.theme_light_token_row_main_bg,
  78                 R.drawable.theme_light_token_row_other_bg,
  79                 R.drawable.theme_light_normal_row_bg);
  80
  81         Theme(final int themeId, final int tokenRowFg,
  82               final int tokenRowFgColor,
  83               final int tokenRowMainBg, final int tokenRowOtherBg,
  84               final int normalRowBg) {
  85             this.themeId = themeId;
  86             this.tokenRowFg = tokenRowFg;
  87             this.tokenRowFgColor = tokenRowFgColor;
  88             this.tokenRowMainBg = tokenRowMainBg;
  89             this.tokenRowOtherBg = tokenRowOtherBg;
  90             this.normalRowBg = normalRowBg;
  91         }
  92
  93         final int themeId;
  94         final int tokenRowFg;
  95         final int tokenRowFgColor;
  96         final int tokenRowMainBg;
  97         final int tokenRowOtherBg;
  98         final int normalRowBg;
  99     }
 100
 101     // Useful:
 102     // http://www.loc.gov/standards/iso639-2/php/code_list.php
 103     public static final Map<String, LanguageResources> isoCodeToResources = new LinkedHashMap<String, LanguageResources>();
 104     static {
 105         isoCodeToResources.put("AF", new LanguageResources("Afrikaans", R.string.AF,
 106                 R.drawable.flag_of_south_africa));
 107         isoCodeToResources.put("SQ", new LanguageResources("Albanian", R.string.SQ,
 108                 R.drawable.flag_of_albania));
 109         isoCodeToResources.put("AR",
 110                 new LanguageResources("Arabic", R.string.AR, R.drawable.arabic));
 111         isoCodeToResources.put("HY", new LanguageResources("Armenian", R.string.HY,
 112                 R.drawable.flag_of_armenia));
 113         isoCodeToResources.put("BE", new LanguageResources("Belarusian", R.string.BE,
 114                 R.drawable.flag_of_belarus));
 115         isoCodeToResources.put("BN", new LanguageResources("Bengali", R.string.BN));
 116         isoCodeToResources.put("BS", new LanguageResources("Bosnian", R.string.BS,
 117                 R.drawable.flag_of_bosnia_and_herzegovina));
 118         isoCodeToResources.put("BG", new LanguageResources("Bulgarian", R.string.BG,
 119                 R.drawable.flag_of_bulgaria));
 120         isoCodeToResources.put("MY", new LanguageResources("Burmese", R.string.MY,
 121                 R.drawable.flag_of_myanmar));
 122         isoCodeToResources.put("ZH", new LanguageResources("Chinese", R.string.ZH,
 123                 R.drawable.flag_of_the_peoples_republic_of_china));
 124         isoCodeToResources.put("cmn", new LanguageResources("Mandarin", R.string.cmn,
 125                 R.drawable.flag_of_the_peoples_republic_of_china));
 126         isoCodeToResources.put("yue", new LanguageResources("Cantonese", R.string.yue,
 127                 R.drawable.flag_of_hong_kong));
 128         isoCodeToResources.put("CA", new LanguageResources("Catalan", R.string.CA));
 129         isoCodeToResources.put("HR", new LanguageResources("Croatian", R.string.HR,
 130                 R.drawable.flag_of_croatia));
 131         isoCodeToResources.put("CS", new LanguageResources("Czech", R.string.CS,
 132                 R.drawable.flag_of_the_czech_republic));
 133         isoCodeToResources.put("DA", new LanguageResources("Danish", R.string.DA,
 134                 R.drawable.flag_of_denmark));
 135         isoCodeToResources.put("NL", new LanguageResources("Dutch", R.string.NL,
 136                 R.drawable.flag_of_the_netherlands));
 137         isoCodeToResources.put("EN", new LanguageResources("English", R.string.EN,
 138                 R.drawable.flag_of_the_united_kingdom));
 139         isoCodeToResources.put("EO", new LanguageResources("Esperanto", R.string.EO,
 140                 R.drawable.flag_of_esperanto));
 141         isoCodeToResources.put("ET", new LanguageResources("Estonian", R.string.ET,
 142                 R.drawable.flag_of_estonia));
 143         isoCodeToResources.put("FI", new LanguageResources("Finnish", R.string.FI,
 144                 R.drawable.flag_of_finland));
 145         isoCodeToResources.put("FR", new LanguageResources("French", R.string.FR,
 146                 R.drawable.flag_of_france));
 147         isoCodeToResources.put("DE", new LanguageResources("German", R.string.DE,
 148                 R.drawable.flag_of_germany));
 149         isoCodeToResources.put("EL", new LanguageResources("Greek", R.string.EL,
 150                 R.drawable.flag_of_greece));
 151         isoCodeToResources.put("grc", new LanguageResources("Ancient Greek", R.string.grc));
 152         isoCodeToResources.put("haw", new LanguageResources("Hawaiian", R.string.haw,
 153                 R.drawable.flag_of_hawaii));
 154         isoCodeToResources.put("HE", new LanguageResources("Hebrew", R.string.HE,
 155                 R.drawable.flag_of_israel));
 156         isoCodeToResources.put("HI", new LanguageResources("Hindi", R.string.HI, R.drawable.hindi));
 157         isoCodeToResources.put("HU", new LanguageResources("Hungarian", R.string.HU,
 158                 R.drawable.flag_of_hungary));
 159         isoCodeToResources.put("IS", new LanguageResources("Icelandic", R.string.IS,
 160                 R.drawable.flag_of_iceland));
 161         isoCodeToResources.put("ID", new LanguageResources("Indonesian", R.string.ID,
 162                 R.drawable.flag_of_indonesia));
 163         isoCodeToResources.put("GA", new LanguageResources("Irish", R.string.GA,
 164                 R.drawable.flag_of_ireland));
 165         isoCodeToResources.put("GD", new LanguageResources("Scottish Gaelic", R.string.GD,
 166                 R.drawable.flag_of_scotland));
 167         isoCodeToResources.put("GV", new LanguageResources("Manx", R.string.GV,
 168                 R.drawable.flag_of_the_isle_of_man));
 169         isoCodeToResources.put("IT", new LanguageResources("Italian", R.string.IT,
 170                 R.drawable.flag_of_italy));
 171         isoCodeToResources.put("LA", new LanguageResources("Latin", R.string.LA));
 172         isoCodeToResources.put("LV", new LanguageResources("Latvian", R.string.LV,
 173                 R.drawable.flag_of_latvia));
 174         isoCodeToResources.put("LT", new LanguageResources("Lithuanian", R.string.LT,
 175                 R.drawable.flag_of_lithuania));
 176         isoCodeToResources.put("JA", new LanguageResources("Japanese", R.string.JA,
 177                 R.drawable.flag_of_japan));
 178         isoCodeToResources.put("KO", new LanguageResources("Korean", R.string.KO,
 179                 R.drawable.flag_of_south_korea));
 180         isoCodeToResources.put("KU", new LanguageResources("Kurdish", R.string.KU));
 181         isoCodeToResources.put("MS", new LanguageResources("Malay", R.string.MS,
 182                 R.drawable.flag_of_malaysia));
 183         isoCodeToResources.put("MI", new LanguageResources("Maori", R.string.MI,
 184                 R.drawable.flag_of_new_zealand));
 185         isoCodeToResources.put("MN", new LanguageResources("Mongolian", R.string.MN,
 186                 R.drawable.flag_of_mongolia));
 187         isoCodeToResources.put("NE", new LanguageResources("Nepali", R.string.NE,
 188                 R.drawable.flag_of_nepal));
 189         isoCodeToResources.put("NO", new LanguageResources("Norwegian", R.string.NO,
 190                 R.drawable.flag_of_norway));
 191         isoCodeToResources.put("FA", new LanguageResources("Persian", R.string.FA,
 192                 R.drawable.flag_of_iran));
 193         isoCodeToResources.put("PL", new LanguageResources("Polish", R.string.PL,
 194                 R.drawable.flag_of_poland));
 195         isoCodeToResources.put("PT", new LanguageResources("Portuguese", R.string.PT,
 196                 R.drawable.flag_of_portugal));
 197         isoCodeToResources.put("PA", new LanguageResources("Punjabi", R.string.PA));
 198         isoCodeToResources.put("RO", new LanguageResources("Romanian", R.string.RO,
 199                 R.drawable.flag_of_romania));
 200         isoCodeToResources.put("RU", new LanguageResources("Russian", R.string.RU,
 201                 R.drawable.flag_of_russia));
 202         isoCodeToResources.put("SA", new LanguageResources("Sanskrit", R.string.SA));
 203         isoCodeToResources.put("SR", new LanguageResources("Serbian", R.string.SR,
 204                 R.drawable.flag_of_serbia));
 205         isoCodeToResources.put("SK", new LanguageResources("Slovak", R.string.SK,
 206                 R.drawable.flag_of_slovakia));
 207         isoCodeToResources.put("SL", new LanguageResources("Slovenian", R.string.SL,
 208                 R.drawable.flag_of_slovenia));
 209         isoCodeToResources.put("SO", new LanguageResources("Somali", R.string.SO,
 210                 R.drawable.flag_of_somalia));
 211         isoCodeToResources.put("ES", new LanguageResources("Spanish", R.string.ES,
 212                 R.drawable.flag_of_spain));
 213         isoCodeToResources.put("SW", new LanguageResources("Swahili", R.string.SW));
 214         isoCodeToResources.put("SV", new LanguageResources("Swedish", R.string.SV,
 215                 R.drawable.flag_of_sweden));
 216         isoCodeToResources.put("TL", new LanguageResources("Tagalog", R.string.TL));
 217         isoCodeToResources.put("TG", new LanguageResources("Tajik", R.string.TG,
 218                 R.drawable.flag_of_tajikistan));
 219         isoCodeToResources.put("TH", new LanguageResources("Thai", R.string.TH,
 220                 R.drawable.flag_of_thailand));
 221         isoCodeToResources.put("BO", new LanguageResources("Tibetan", R.string.BO));
 222         isoCodeToResources.put("TR", new LanguageResources("Turkish", R.string.TR,
 223                 R.drawable.flag_of_turkey));
 224         isoCodeToResources.put("UK", new LanguageResources("Ukrainian", R.string.UK,
 225                 R.drawable.flag_of_ukraine));
 226         isoCodeToResources.put("UR", new LanguageResources("Urdu", R.string.UR));
 227         isoCodeToResources.put("VI", new LanguageResources("Vietnamese", R.string.VI,
 228                 R.drawable.flag_of_vietnam));
 229         isoCodeToResources.put("CI", new LanguageResources("Welsh", R.string.CI,
 230                 R.drawable.flag_of_wales_2));
 231         isoCodeToResources.put("YI", new LanguageResources("Yiddish", R.string.YI));
 232         isoCodeToResources.put("ZU", new LanguageResources("Zulu", R.string.ZU));
 233         isoCodeToResources.put("AZ", new LanguageResources("Azeri", R.string.AZ,
 234                 R.drawable.flag_of_azerbaijan));
 235         isoCodeToResources.put("EU", new LanguageResources("Basque", R.string.EU,
 236                 R.drawable.flag_of_the_basque_country));
 237         isoCodeToResources.put("BR", new LanguageResources("Breton", R.string.BR));
 238         isoCodeToResources.put("MR", new LanguageResources("Marathi", R.string.MR));
 239         isoCodeToResources.put("FO", new LanguageResources("Faroese", R.string.FO));
 240         isoCodeToResources.put("GL", new LanguageResources("Galician", R.string.GL,
 241                 R.drawable.flag_of_galicia));
 242         isoCodeToResources.put("KA", new LanguageResources("Georgian", R.string.KA,
 243                 R.drawable.flag_of_georgia));
 244         isoCodeToResources.put("HT", new LanguageResources("Haitian Creole", R.string.HT,
 245                 R.drawable.flag_of_haiti));
 246         isoCodeToResources.put("LB", new LanguageResources("Luxembourgish", R.string.LB,
 247                 R.drawable.flag_of_luxembourg));
 248         isoCodeToResources.put("MK", new LanguageResources("Macedonian", R.string.MK,
 249                 R.drawable.flag_of_macedonia));
 250         isoCodeToResources.put("LO", new LanguageResources("Lao", R.string.LO,
 251                 R.drawable.flag_of_laos));
 252         isoCodeToResources.put("ML", new LanguageResources("Malayalam", R.string.ML));
 253         isoCodeToResources.put("SL", new LanguageResources("Slovenian", R.string.SL,
 254                 R.drawable.flag_of_slovenia));
 255         isoCodeToResources.put("TA", new LanguageResources("Tamil", R.string.TA));
 256         isoCodeToResources.put("SH", new LanguageResources("Serbo-Croatian", R.string.SH));
 257         isoCodeToResources.put("SD", new LanguageResources("Sindhi", R.string.SD));
 258
 259         // Hack to allow lower-case ISO codes to work:
 260         for (final String isoCode : new ArrayList<String>(isoCodeToResources.keySet())) {
 261             isoCodeToResources.put(isoCode.toLowerCase(), isoCodeToResources.get(isoCode));
 262         }
 263
 264     }
 265
 266     static final class DictionaryConfig implements Serializable {
 267         private static final long serialVersionUID = -1444177164708201263L;
 268         // User-ordered list, persisted, just the ones that are/have been
 269         // present.
 270         final List<String> dictionaryFilesOrdered = new ArrayList<String>();
 271
 272         final Map<String, DictionaryInfo> uncompressedFilenameToDictionaryInfo = new LinkedHashMap<String, DictionaryInfo>();
 273
 274         /**
 275          * Sometimes a deserialized version of this data structure isn't valid.
 276          * @return
 277          */
 278         boolean isValid() {
 279             return uncompressedFilenameToDictionaryInfo != null && dictionaryFilesOrdered != null;
 280         }
 281     }
 282
 283     DictionaryConfig dictionaryConfig = null;
 284
 285     int languageButtonPixels = -1;
 286
 287     static synchronized void staticInit(final Context context) {
 288         if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO != null) {
 289             return;
 290         }
 291         DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO = new LinkedHashMap<String, DictionaryInfo>();
 292         final BufferedReader reader = new BufferedReader(
 293                 new InputStreamReader(context.getResources().openRawResource(R.raw.dictionary_info)));
 294         try {
 295             String line;
 296             while ((line = reader.readLine()) != null) {
 297                 if (line.startsWith("#") || line.length() == 0) {
 298                     continue;
 299                 }
 300                 final DictionaryInfo dictionaryInfo = new DictionaryInfo(line);
 301                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.put(
 302                         dictionaryInfo.uncompressedFilename, dictionaryInfo);
 303             }
 304             reader.close();
 305         } catch (IOException e) {
 306             Log.e(LOG, "Failed to load downloadable dictionary lists.", e);
 307         }
 308     }
 309
 310     private File dictDir;
 311
 312     @Override
 313     public void onCreate() {
 314         super.onCreate();
 315         Log.d("QuickDic", "Application: onCreate");
 316         TransliteratorManager.init(null);
 317         staticInit(getApplicationContext());
 318
 319         languageButtonPixels = (int) TypedValue.applyDimension(
 320                 TypedValue.COMPLEX_UNIT_DIP, 60, getResources().getDisplayMetrics());
 321
 322         // Load the dictionaries we know about.
 323         dictionaryConfig = PersistentObjectCache.init(getApplicationContext()).read(
 324                 C.DICTIONARY_CONFIGS, DictionaryConfig.class);
 325         if (dictionaryConfig == null) {
 326             dictionaryConfig = new DictionaryConfig();
 327         }
 328         if (!dictionaryConfig.isValid()) {
 329             dictionaryConfig = new DictionaryConfig();
 330         }
 331
 332         // Theme stuff.
 333         setTheme(getSelectedTheme().themeId);
 334         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 335         prefs.registerOnSharedPreferenceChangeListener(new OnSharedPreferenceChangeListener() {
 336             @Override
 337             public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
 338                     String key) {
 339                 Log.d("QuickDic", "prefs changed: " + key);
 340                 if (key.equals(getString(R.string.themeKey))) {
 341                     setTheme(getSelectedTheme().themeId);
 342                 }
 343             }
 344         });
 345     }
 346
 347     public void onCreateGlobalOptionsMenu(
 348             final Context context, final Menu menu) {
 349         final MenuItem about = menu.add(getString(R.string.about));
 350         MenuItemCompat.setShowAsAction(about, MenuItem.SHOW_AS_ACTION_NEVER);
 351         about.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 352             public boolean onMenuItemClick(final MenuItem menuItem) {
 353                 final Intent intent = new Intent(getApplicationContext(), AboutActivity.class);
 354                 context.startActivity(intent);
 355                 return false;
 356             }
 357         });
 358
 359         final MenuItem help = menu.add(getString(R.string.help));
 360         MenuItemCompat.setShowAsAction(help, MenuItem.SHOW_AS_ACTION_NEVER);
 361         help.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 362             public boolean onMenuItemClick(final MenuItem menuItem) {
 363                 context.startActivity(HtmlDisplayActivity.getHelpLaunchIntent(getApplicationContext()));
 364                 return false;
 365             }
 366         });
 367
 368         final MenuItem preferences = menu.add(getString(R.string.settings));
 369         MenuItemCompat.setShowAsAction(preferences, MenuItem.SHOW_AS_ACTION_NEVER);
 370         preferences.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 371             public boolean onMenuItemClick(final MenuItem menuItem) {
 372                 PreferenceActivity.prefsMightHaveChanged = true;
 373                 final Intent intent = new Intent(getApplicationContext(), PreferenceActivity.class);
 374                 context.startActivity(intent);
 375                 return false;
 376             }
 377         });
 378
 379         final MenuItem reportIssue = menu.add(getString(R.string.reportIssue));
 380         MenuItemCompat.setShowAsAction(reportIssue, MenuItem.SHOW_AS_ACTION_NEVER);
 381         reportIssue.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 382             public boolean onMenuItemClick(final MenuItem menuItem) {
 383                 final Intent intent = new Intent(Intent.ACTION_VIEW);
 384                 intent.setData(Uri
 385                         .parse("http://github.com/rdoeffinger/Dictionary/issues"));
 386                 context.startActivity(intent);
 387                 return false;
 388             }
 389         });
 390     }
 391
 392     public synchronized File getDictDir() {
 393         // This metaphor doesn't work, because we've already reset
 394         // prefsMightHaveChanged.
 395         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 396         String dir = prefs.getString(getString(R.string.quickdicDirectoryKey), "");
 397         if (dir.isEmpty()) {
 398             final File defaultDictDir = new File(Environment.getExternalStorageDirectory(), "quickDic");
 399             dir = defaultDictDir.getAbsolutePath();
 400         }
 401         dictDir = new File(dir);
 402         dictDir.mkdirs();
 403         return dictDir;
 404     }
 405
 406     public File getWordListFile() {
 407         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 408         String file = prefs.getString(getString(R.string.wordListFileKey), "");
 409         if (file.isEmpty()) {
 410             return new File(getDictDir(), "wordList.txt");
 411         }
 412         return new File(file);
 413     }
 414
 415     public Theme getSelectedTheme() {
 416         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 417         final String theme = prefs.getString(getString(R.string.themeKey), "themeLight");
 418         if (theme.equals("themeLight")) {
 419             return Theme.LIGHT;
 420         } else {
 421             return Theme.DEFAULT;
 422         }
 423     }
 424
 425     public File getPath(String uncompressedFilename) {
 426         return new File(getDictDir(), uncompressedFilename);
 427     }
 428
 429     String defaultLangISO2 = Locale.getDefault().getLanguage().toLowerCase();
 430     String defaultLangName = null;
 431     final Map<String, String> fileToNameCache = new LinkedHashMap<String, String>();
 432
 433     public String isoCodeToLocalizedLanguageName(final String isoCode) {
 434         final Language.LanguageResources languageResources = isoCodeToResources
 435                 .get(isoCode);
 436         final String lang = languageResources != null ? getApplicationContext().getString(
 437                 languageResources.nameId) : isoCode;
 438         return lang;
 439     }
 440
 441     public List<IndexInfo> sortedIndexInfos(List<IndexInfo> indexInfos) {
 442         // Hack to put the default locale first in the name.
 443         if (indexInfos.size() > 1 &&
 444                 indexInfos.get(1).shortName.toLowerCase().equals(defaultLangISO2)) {
 445             List<IndexInfo> result = new ArrayList<DictionaryInfo.IndexInfo>(indexInfos);
 446             ListUtil.swap(result, 0, 1);
 447             return result;
 448         }
 449         return indexInfos;
 450     }
 451
 452     public synchronized String getDictionaryName(final String uncompressedFilename) {
 453         final String currentLocale = Locale.getDefault().getLanguage().toLowerCase();
 454         if (!currentLocale.equals(defaultLangISO2)) {
 455             defaultLangISO2 = currentLocale;
 456             fileToNameCache.clear();
 457             defaultLangName = null;
 458         }
 459         if (defaultLangName == null) {
 460             defaultLangName = isoCodeToLocalizedLanguageName(defaultLangISO2);
 461         }
 462
 463         String name = fileToNameCache.get(uncompressedFilename);
 464         if (name != null) {
 465             return name;
 466         }
 467
 468         final DictionaryInfo dictionaryInfo = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 469                 .get(uncompressedFilename);
 470         if (dictionaryInfo != null) {
 471             final StringBuilder nameBuilder = new StringBuilder();
 472
 473             List<IndexInfo> sortedIndexInfos = sortedIndexInfos(dictionaryInfo.indexInfos);
 474             for (int i = 0; i < sortedIndexInfos.size(); ++i) {
 475                 if (i > 0) {
 476                     nameBuilder.append("-");
 477                 }
 478                 nameBuilder
 479                         .append(isoCodeToLocalizedLanguageName(sortedIndexInfos.get(i).shortName));
 480             }
 481             name = nameBuilder.toString();
 482         } else {
 483             name = uncompressedFilename.replace(".quickdic", "");
 484         }
 485         fileToNameCache.put(uncompressedFilename, name);
 486         return name;
 487     }
 488
 489     public View createButton(final Context context, final DictionaryInfo dictionaryInfo,
 490             final IndexInfo indexInfo) {
 491         LanguageResources languageResources = isoCodeToResources.get(indexInfo.shortName);
 492         View result;
 493
 494         if (languageResources == null || languageResources.flagId <= 0) {
 495             Button button = new Button(context);
 496             button.setText(indexInfo.shortName);
 497             result = button;
 498         } else {
 499             ImageButton button = new ImageButton(context);
 500             button.setImageResource(languageResources.flagId);
 501             button.setScaleType(ScaleType.FIT_CENTER);
 502             result = button;
 503         }
 504         result.setMinimumWidth(languageButtonPixels);
 505         result.setMinimumHeight(languageButtonPixels * 2 / 3);
 506         // result.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
 507         // LayoutParams.WRAP_CONTENT));
 508         return result;
 509     }
 510
 511     public synchronized void moveDictionaryToTop(final DictionaryInfo dictionaryInfo) {
 512         dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename);
 513         dictionaryConfig.dictionaryFilesOrdered.add(0, dictionaryInfo.uncompressedFilename);
 514         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 515     }
 516
 517     public synchronized void deleteDictionary(final DictionaryInfo dictionaryInfo) {
 518         while (dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename)) {
 519         }
 520         dictionaryConfig.uncompressedFilenameToDictionaryInfo
 521                 .remove(dictionaryInfo.uncompressedFilename);
 522         getPath(dictionaryInfo.uncompressedFilename).delete();
 523         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 524     }
 525
 526     final Collator collator = Collator.getInstance();
 527     final Comparator<String> uncompressedFilenameComparator = new Comparator<String>() {
 528         @Override
 529         public int compare(String uncompressedFilename1, String uncompressedFilename2) {
 530             final String name1 = getDictionaryName(uncompressedFilename1);
 531             final String name2 = getDictionaryName(uncompressedFilename2);
 532             if (defaultLangName.length() > 0) {
 533                 if (name1.startsWith(defaultLangName + "-")
 534                         && !name2.startsWith(defaultLangName + "-")) {
 535                     return -1;
 536                 } else if (name2.startsWith(defaultLangName + "-")
 537                         && !name1.startsWith(defaultLangName + "-")) {
 538                     return 1;
 539                 }
 540             }
 541             return collator.compare(name1, name2);
 542         }
 543     };
 544     final Comparator<DictionaryInfo> dictionaryInfoComparator = new Comparator<DictionaryInfo>() {
 545         @Override
 546         public int compare(DictionaryInfo d1, DictionaryInfo d2) {
 547             // Single-index dictionaries first.
 548             if (d1.indexInfos.size() != d2.indexInfos.size()) {
 549                 return d1.indexInfos.size() - d2.indexInfos.size();
 550             }
 551             return uncompressedFilenameComparator.compare(d1.uncompressedFilename,
 552                     d2.uncompressedFilename);
 553         }
 554     };
 555
 556     public void backgroundUpdateDictionaries(final Runnable onUpdateFinished) {
 557         new Thread(new Runnable() {
 558             @Override
 559             public void run() {
 560                 final DictionaryConfig oldDictionaryConfig = new DictionaryConfig();
 561                 synchronized (this) {
 562                     oldDictionaryConfig.dictionaryFilesOrdered
 563                             .addAll(dictionaryConfig.dictionaryFilesOrdered);
 564                 }
 565                 final DictionaryConfig newDictionaryConfig = new DictionaryConfig();
 566                 for (final String uncompressedFilename : oldDictionaryConfig.dictionaryFilesOrdered) {
 567                     final File dictFile = getPath(uncompressedFilename);
 568                     final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(dictFile);
 569                     if (dictionaryInfo != null) {
 570                         newDictionaryConfig.dictionaryFilesOrdered.add(uncompressedFilename);
 571                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 572                                 uncompressedFilename, dictionaryInfo);
 573                     }
 574                 }
 575
 576                 // Are there dictionaries on the device that we didn't know
 577                 // about already?
 578                 // Pick them up and put them at the end of the list.
 579                 final List<String> toAddSorted = new ArrayList<String>();
 580                 final File[] dictDirFiles = getDictDir().listFiles();
 581                 if (dictDirFiles != null) {
 582                     for (final File file : dictDirFiles) {
 583                         if (file.getName().endsWith(".zip")) {
 584                             if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 585                                     .containsKey(file.getName().replace(".zip", ""))) {
 586                                 file.delete();
 587                             }
 588                         }
 589                         if (!file.getName().endsWith(".quickdic")) {
 590                             continue;
 591                         }
 592                         if (newDictionaryConfig.uncompressedFilenameToDictionaryInfo
 593                                 .containsKey(file.getName())) {
 594                             // We have it in our list already.
 595                             continue;
 596                         }
 597                         final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(file);
 598                         if (dictionaryInfo == null) {
 599                             Log.e(LOG, "Unable to parse dictionary: " + file.getPath());
 600                             continue;
 601                         }
 602
 603                         toAddSorted.add(file.getName());
 604                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 605                                 file.getName(), dictionaryInfo);
 606                     }
 607                 } else {
 608                     Log.w(LOG, "dictDir is not a diretory: " + getDictDir().getPath());
 609                 }
 610                 if (!toAddSorted.isEmpty()) {
 611                     Collections.sort(toAddSorted, uncompressedFilenameComparator);
 612                     newDictionaryConfig.dictionaryFilesOrdered.addAll(toAddSorted);
 613                 }
 614
 615                 PersistentObjectCache.getInstance()
 616                         .write(C.DICTIONARY_CONFIGS, newDictionaryConfig);
 617                 synchronized (this) {
 618                     dictionaryConfig = newDictionaryConfig;
 619                 }
 620
 621                 try {
 622                     onUpdateFinished.run();
 623                 } catch (Exception e) {
 624                     Log.e(LOG, "Exception running callback.", e);
 625                 }
 626             }
 627         }).start();
 628     }
 629
 630     public boolean matchesFilters(final DictionaryInfo dictionaryInfo, final String[] filters) {
 631         if (filters == null) {
 632             return true;
 633         }
 634         for (final String filter : filters) {
 635             if (!getDictionaryName(dictionaryInfo.uncompressedFilename).toLowerCase().contains(
 636                     filter)) {
 637                 return false;
 638             }
 639         }
 640         return true;
 641     }
 642
 643     public synchronized List<DictionaryInfo> getDictionariesOnDevice(String[] filters) {
 644         final List<DictionaryInfo> result = new ArrayList<DictionaryInfo>(
 645                 dictionaryConfig.dictionaryFilesOrdered.size());
 646         for (final String uncompressedFilename : dictionaryConfig.dictionaryFilesOrdered) {
 647             final DictionaryInfo dictionaryInfo = dictionaryConfig.uncompressedFilenameToDictionaryInfo
 648                     .get(uncompressedFilename);
 649             if (dictionaryInfo != null && matchesFilters(dictionaryInfo, filters)) {
 650                 result.add(dictionaryInfo);
 651             }
 652         }
 653         return result;
 654     }
 655
 656     public List<DictionaryInfo> getDownloadableDictionaries(String[] filters) {
 657         final List<DictionaryInfo> result = new ArrayList<DictionaryInfo>(
 658                 dictionaryConfig.dictionaryFilesOrdered.size());
 659
 660         final Map<String, DictionaryInfo> remaining = new LinkedHashMap<String, DictionaryInfo>(
 661                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO);
 662         remaining.keySet().removeAll(dictionaryConfig.dictionaryFilesOrdered);
 663         for (final DictionaryInfo dictionaryInfo : remaining.values()) {
 664             if (matchesFilters(dictionaryInfo, filters)) {
 665                 result.add(dictionaryInfo);
 666             }
 667         }
 668         Collections.sort(result, dictionaryInfoComparator);
 669         return result;
 670     }
 671
 672     public synchronized boolean isDictionaryOnDevice(String uncompressedFilename) {
 673         return dictionaryConfig.uncompressedFilenameToDictionaryInfo.get(uncompressedFilename) != null;
 674     }
 675
 676     public boolean updateAvailable(final DictionaryInfo dictionaryInfo) {
 677         final DictionaryInfo downloadable =
 678                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.get(
 679                         dictionaryInfo.uncompressedFilename);
 680         return downloadable != null &&
 681                 downloadable.creationMillis > dictionaryInfo.creationMillis;
 682     }
 683
 684     public DictionaryInfo getDownloadable(final String uncompressedFilename) {
 685         final DictionaryInfo downloadable = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 686                 .get(uncompressedFilename);
 687         return downloadable;
 688     }
 689
 690 }