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