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.Build;
  24 import android.os.Environment;
  25 import android.preference.PreferenceManager;
  26 import android.support.v4.view.MenuItemCompat;
  27 import android.util.Log;
  28 import android.util.TypedValue;
  29 import android.view.Menu;
  30 import android.view.MenuItem;
  31 import android.view.MenuItem.OnMenuItemClickListener;
  32 import android.view.View;
  33 import android.widget.Button;
  34 import android.widget.ImageButton;
  35 import android.widget.ImageView.ScaleType;
  36 import android.widget.LinearLayout;
  37 import android.widget.Toast;
  38
  39 import com.hughes.android.dictionary.DictionaryInfo.IndexInfo;
  40 import com.hughes.android.dictionary.engine.Dictionary;
  41 import com.hughes.android.dictionary.engine.Language;
  42 import com.hughes.android.dictionary.engine.Language.LanguageResources;
  43 import com.hughes.android.dictionary.engine.TransliteratorManager;
  44 import com.hughes.android.util.PersistentObjectCache;
  45 import com.hughes.util.ListUtil;
  46 import com.ibm.icu.text.Collator;
  47
  48 import java.io.BufferedReader;
  49 import java.io.File;
  50 import java.io.IOException;
  51 import java.io.InputStreamReader;
  52 import java.io.Serializable;
  53 import java.util.ArrayList;
  54 import java.util.Collections;
  55 import java.util.Comparator;
  56 import java.util.LinkedHashMap;
  57 import java.util.List;
  58 import java.util.Locale;
  59 import java.util.Map;
  60
  61 public class DictionaryApplication extends Application {
  62
  63     static final String LOG = "QuickDicApp";
  64
  65     // If set to false, avoid use of ICU collator
  66     // Works well enough for most european languages,
  67     // gives faster startup and avoids crashes on some
  68     // devices due to Dalvik bugs (e.g. ARMv6, S5570i, CM11).
  69     // Leave it enabled by default for correctness except
  70     // for my known broken development/performance test device config.
  71     static public final boolean USE_COLLATOR = !android.os.Build.FINGERPRINT.equals("Samsung/cm_tassve/tassve:4.4.4/KTU84Q/20150211:userdebug/release-keys");
  72
  73     // Static, determined by resources (and locale).
  74     // Unordered.
  75     static Map<String, DictionaryInfo> DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO = null;
  76
  77     enum Theme {
  78         DEFAULT(R.style.Theme_Default,
  79                 R.style.Theme_Default_TokenRow_Fg,
  80                 R.color.theme_default_token_row_fg,
  81                 R.drawable.theme_default_token_row_main_bg,
  82                 R.drawable.theme_default_token_row_other_bg,
  83                 R.drawable.theme_default_normal_row_bg),
  84
  85         LIGHT(R.style.Theme_Light,
  86                 R.style.Theme_Light_TokenRow_Fg,
  87                 R.color.theme_light_token_row_fg,
  88                 R.drawable.theme_light_token_row_main_bg,
  89                 R.drawable.theme_light_token_row_other_bg,
  90                 R.drawable.theme_light_normal_row_bg);
  91
  92         Theme(final int themeId, final int tokenRowFg,
  93               final int tokenRowFgColor,
  94               final int tokenRowMainBg, final int tokenRowOtherBg,
  95               final int normalRowBg) {
  96             this.themeId = themeId;
  97             this.tokenRowFg = tokenRowFg;
  98             this.tokenRowFgColor = tokenRowFgColor;
  99             this.tokenRowMainBg = tokenRowMainBg;
 100             this.tokenRowOtherBg = tokenRowOtherBg;
 101             this.normalRowBg = normalRowBg;
 102         }
 103
 104         final int themeId;
 105         final int tokenRowFg;
 106         final int tokenRowFgColor;
 107         final int tokenRowMainBg;
 108         final int tokenRowOtherBg;
 109         final int normalRowBg;
 110     }
 111
 112     // Useful:
 113     // http://www.loc.gov/standards/iso639-2/php/code_list.php
 114     public static final Map<String, LanguageResources> isoCodeToResources = new LinkedHashMap<String, LanguageResources>();
 115     static {
 116         isoCodeToResources.put("AF", new LanguageResources("Afrikaans", R.string.AF,
 117                 R.drawable.flag_of_south_africa));
 118         isoCodeToResources.put("SQ", new LanguageResources("Albanian", R.string.SQ,
 119                 R.drawable.flag_of_albania));
 120         isoCodeToResources.put("AR",
 121                 new LanguageResources("Arabic", R.string.AR, R.drawable.arabic));
 122         isoCodeToResources.put("HY", new LanguageResources("Armenian", R.string.HY,
 123                 R.drawable.flag_of_armenia));
 124         isoCodeToResources.put("BE", new LanguageResources("Belarusian", R.string.BE,
 125                 R.drawable.flag_of_belarus));
 126         isoCodeToResources.put("BN", new LanguageResources("Bengali", R.string.BN));
 127         isoCodeToResources.put("BS", new LanguageResources("Bosnian", R.string.BS,
 128                 R.drawable.flag_of_bosnia_and_herzegovina));
 129         isoCodeToResources.put("BG", new LanguageResources("Bulgarian", R.string.BG,
 130                 R.drawable.flag_of_bulgaria));
 131         isoCodeToResources.put("MY", new LanguageResources("Burmese", R.string.MY,
 132                 R.drawable.flag_of_myanmar));
 133         isoCodeToResources.put("ZH", new LanguageResources("Chinese", R.string.ZH,
 134                 R.drawable.flag_of_the_peoples_republic_of_china));
 135         isoCodeToResources.put("cmn", new LanguageResources("Mandarin", R.string.cmn,
 136                 R.drawable.flag_of_the_peoples_republic_of_china));
 137         isoCodeToResources.put("yue", new LanguageResources("Cantonese", R.string.yue,
 138                 R.drawable.flag_of_hong_kong));
 139         isoCodeToResources.put("CA", new LanguageResources("Catalan", R.string.CA));
 140         isoCodeToResources.put("HR", new LanguageResources("Croatian", R.string.HR,
 141                 R.drawable.flag_of_croatia));
 142         isoCodeToResources.put("CS", new LanguageResources("Czech", R.string.CS,
 143                 R.drawable.flag_of_the_czech_republic));
 144         isoCodeToResources.put("DA", new LanguageResources("Danish", R.string.DA,
 145                 R.drawable.flag_of_denmark));
 146         isoCodeToResources.put("NL", new LanguageResources("Dutch", R.string.NL,
 147                 R.drawable.flag_of_the_netherlands));
 148         isoCodeToResources.put("EN", new LanguageResources("English", R.string.EN,
 149                 R.drawable.flag_of_the_united_kingdom));
 150         isoCodeToResources.put("EO", new LanguageResources("Esperanto", R.string.EO,
 151                 R.drawable.flag_of_esperanto));
 152         isoCodeToResources.put("ET", new LanguageResources("Estonian", R.string.ET,
 153                 R.drawable.flag_of_estonia));
 154         isoCodeToResources.put("FI", new LanguageResources("Finnish", R.string.FI,
 155                 R.drawable.flag_of_finland));
 156         isoCodeToResources.put("FR", new LanguageResources("French", R.string.FR,
 157                 R.drawable.flag_of_france));
 158         isoCodeToResources.put("DE", new LanguageResources("German", R.string.DE,
 159                 R.drawable.flag_of_germany));
 160         isoCodeToResources.put("EL", new LanguageResources("Greek", R.string.EL,
 161                 R.drawable.flag_of_greece));
 162         isoCodeToResources.put("grc", new LanguageResources("Ancient Greek", R.string.grc));
 163         isoCodeToResources.put("haw", new LanguageResources("Hawaiian", R.string.haw,
 164                 R.drawable.flag_of_hawaii));
 165         isoCodeToResources.put("HE", new LanguageResources("Hebrew", R.string.HE,
 166                 R.drawable.flag_of_israel));
 167         isoCodeToResources.put("HI", new LanguageResources("Hindi", R.string.HI, R.drawable.hindi));
 168         isoCodeToResources.put("HU", new LanguageResources("Hungarian", R.string.HU,
 169                 R.drawable.flag_of_hungary));
 170         isoCodeToResources.put("IS", new LanguageResources("Icelandic", R.string.IS,
 171                 R.drawable.flag_of_iceland));
 172         isoCodeToResources.put("ID", new LanguageResources("Indonesian", R.string.ID,
 173                 R.drawable.flag_of_indonesia));
 174         isoCodeToResources.put("GA", new LanguageResources("Irish", R.string.GA,
 175                 R.drawable.flag_of_ireland));
 176         isoCodeToResources.put("GD", new LanguageResources("Scottish Gaelic", R.string.GD,
 177                 R.drawable.flag_of_scotland));
 178         isoCodeToResources.put("GV", new LanguageResources("Manx", R.string.GV,
 179                 R.drawable.flag_of_the_isle_of_man));
 180         isoCodeToResources.put("IT", new LanguageResources("Italian", R.string.IT,
 181                 R.drawable.flag_of_italy));
 182         isoCodeToResources.put("LA", new LanguageResources("Latin", R.string.LA));
 183         isoCodeToResources.put("LV", new LanguageResources("Latvian", R.string.LV,
 184                 R.drawable.flag_of_latvia));
 185         isoCodeToResources.put("LT", new LanguageResources("Lithuanian", R.string.LT,
 186                 R.drawable.flag_of_lithuania));
 187         isoCodeToResources.put("JA", new LanguageResources("Japanese", R.string.JA,
 188                 R.drawable.flag_of_japan));
 189         isoCodeToResources.put("KO", new LanguageResources("Korean", R.string.KO,
 190                 R.drawable.flag_of_south_korea));
 191         isoCodeToResources.put("KU", new LanguageResources("Kurdish", R.string.KU));
 192         isoCodeToResources.put("MS", new LanguageResources("Malay", R.string.MS,
 193                 R.drawable.flag_of_malaysia));
 194         isoCodeToResources.put("MI", new LanguageResources("Maori", R.string.MI,
 195                 R.drawable.flag_of_new_zealand));
 196         isoCodeToResources.put("MN", new LanguageResources("Mongolian", R.string.MN,
 197                 R.drawable.flag_of_mongolia));
 198         isoCodeToResources.put("NE", new LanguageResources("Nepali", R.string.NE,
 199                 R.drawable.flag_of_nepal));
 200         isoCodeToResources.put("NO", new LanguageResources("Norwegian", R.string.NO,
 201                 R.drawable.flag_of_norway));
 202         isoCodeToResources.put("FA", new LanguageResources("Persian", R.string.FA,
 203                 R.drawable.flag_of_iran));
 204         isoCodeToResources.put("PL", new LanguageResources("Polish", R.string.PL,
 205                 R.drawable.flag_of_poland));
 206         isoCodeToResources.put("PT", new LanguageResources("Portuguese", R.string.PT,
 207                 R.drawable.flag_of_portugal));
 208         isoCodeToResources.put("PA", new LanguageResources("Punjabi", R.string.PA));
 209         isoCodeToResources.put("RO", new LanguageResources("Romanian", R.string.RO,
 210                 R.drawable.flag_of_romania));
 211         isoCodeToResources.put("RU", new LanguageResources("Russian", R.string.RU,
 212                 R.drawable.flag_of_russia));
 213         isoCodeToResources.put("SA", new LanguageResources("Sanskrit", R.string.SA));
 214         isoCodeToResources.put("SR", new LanguageResources("Serbian", R.string.SR,
 215                 R.drawable.flag_of_serbia));
 216         isoCodeToResources.put("SK", new LanguageResources("Slovak", R.string.SK,
 217                 R.drawable.flag_of_slovakia));
 218         isoCodeToResources.put("SL", new LanguageResources("Slovenian", R.string.SL,
 219                 R.drawable.flag_of_slovenia));
 220         isoCodeToResources.put("SO", new LanguageResources("Somali", R.string.SO,
 221                 R.drawable.flag_of_somalia));
 222         isoCodeToResources.put("ES", new LanguageResources("Spanish", R.string.ES,
 223                 R.drawable.flag_of_spain));
 224         isoCodeToResources.put("SW", new LanguageResources("Swahili", R.string.SW));
 225         isoCodeToResources.put("SV", new LanguageResources("Swedish", R.string.SV,
 226                 R.drawable.flag_of_sweden));
 227         isoCodeToResources.put("TL", new LanguageResources("Tagalog", R.string.TL));
 228         isoCodeToResources.put("TG", new LanguageResources("Tajik", R.string.TG,
 229                 R.drawable.flag_of_tajikistan));
 230         isoCodeToResources.put("TH", new LanguageResources("Thai", R.string.TH,
 231                 R.drawable.flag_of_thailand));
 232         isoCodeToResources.put("BO", new LanguageResources("Tibetan", R.string.BO));
 233         isoCodeToResources.put("TR", new LanguageResources("Turkish", R.string.TR,
 234                 R.drawable.flag_of_turkey));
 235         isoCodeToResources.put("UK", new LanguageResources("Ukrainian", R.string.UK,
 236                 R.drawable.flag_of_ukraine));
 237         isoCodeToResources.put("UR", new LanguageResources("Urdu", R.string.UR));
 238         isoCodeToResources.put("VI", new LanguageResources("Vietnamese", R.string.VI,
 239                 R.drawable.flag_of_vietnam));
 240         isoCodeToResources.put("CI", new LanguageResources("Welsh", R.string.CI,
 241                 R.drawable.flag_of_wales_2));
 242         isoCodeToResources.put("YI", new LanguageResources("Yiddish", R.string.YI));
 243         isoCodeToResources.put("ZU", new LanguageResources("Zulu", R.string.ZU));
 244         isoCodeToResources.put("AZ", new LanguageResources("Azeri", R.string.AZ,
 245                 R.drawable.flag_of_azerbaijan));
 246         isoCodeToResources.put("EU", new LanguageResources("Basque", R.string.EU,
 247                 R.drawable.flag_of_the_basque_country));
 248         isoCodeToResources.put("BR", new LanguageResources("Breton", R.string.BR));
 249         isoCodeToResources.put("MR", new LanguageResources("Marathi", R.string.MR));
 250         isoCodeToResources.put("FO", new LanguageResources("Faroese", R.string.FO));
 251         isoCodeToResources.put("GL", new LanguageResources("Galician", R.string.GL,
 252                 R.drawable.flag_of_galicia));
 253         isoCodeToResources.put("KA", new LanguageResources("Georgian", R.string.KA,
 254                 R.drawable.flag_of_georgia));
 255         isoCodeToResources.put("HT", new LanguageResources("Haitian Creole", R.string.HT,
 256                 R.drawable.flag_of_haiti));
 257         isoCodeToResources.put("LB", new LanguageResources("Luxembourgish", R.string.LB,
 258                 R.drawable.flag_of_luxembourg));
 259         isoCodeToResources.put("MK", new LanguageResources("Macedonian", R.string.MK,
 260                 R.drawable.flag_of_macedonia));
 261         isoCodeToResources.put("LO", new LanguageResources("Lao", R.string.LO,
 262                 R.drawable.flag_of_laos));
 263         isoCodeToResources.put("ML", new LanguageResources("Malayalam", R.string.ML));
 264         isoCodeToResources.put("SL", new LanguageResources("Slovenian", R.string.SL,
 265                 R.drawable.flag_of_slovenia));
 266         isoCodeToResources.put("TA", new LanguageResources("Tamil", R.string.TA));
 267         isoCodeToResources.put("SH", new LanguageResources("Serbo-Croatian", R.string.SH));
 268         isoCodeToResources.put("SD", new LanguageResources("Sindhi", R.string.SD));
 269
 270         // Hack to allow lower-case ISO codes to work:
 271         for (final String isoCode : new ArrayList<String>(isoCodeToResources.keySet())) {
 272             isoCodeToResources.put(isoCode.toLowerCase(), isoCodeToResources.get(isoCode));
 273         }
 274
 275     }
 276
 277     static final class DictionaryConfig implements Serializable {
 278         private static final long serialVersionUID = -1444177164708201263L;
 279         // User-ordered list, persisted, just the ones that are/have been
 280         // present.
 281         final List<String> dictionaryFilesOrdered = new ArrayList<String>();
 282
 283         final Map<String, DictionaryInfo> uncompressedFilenameToDictionaryInfo = new LinkedHashMap<String, DictionaryInfo>();
 284
 285         /**
 286          * Sometimes a deserialized version of this data structure isn't valid.
 287          * @return
 288          */
 289         boolean isValid() {
 290             return uncompressedFilenameToDictionaryInfo != null && dictionaryFilesOrdered != null;
 291         }
 292     }
 293
 294     DictionaryConfig dictionaryConfig = null;
 295
 296     int languageButtonPixels = -1;
 297
 298     static synchronized void staticInit(final Context context) {
 299         if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO != null) {
 300             return;
 301         }
 302         DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO = new LinkedHashMap<String, DictionaryInfo>();
 303         final BufferedReader reader = new BufferedReader(
 304                 new InputStreamReader(context.getResources().openRawResource(R.raw.dictionary_info)));
 305         try {
 306             String line;
 307             while ((line = reader.readLine()) != null) {
 308                 if (line.startsWith("#") || line.length() == 0) {
 309                     continue;
 310                 }
 311                 final DictionaryInfo dictionaryInfo = new DictionaryInfo(line);
 312                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.put(
 313                         dictionaryInfo.uncompressedFilename, dictionaryInfo);
 314             }
 315             reader.close();
 316         } catch (IOException e) {
 317             Log.e(LOG, "Failed to load downloadable dictionary lists.", e);
 318         }
 319     }
 320
 321     private File dictDir;
 322
 323     @Override
 324     public void onCreate() {
 325         super.onCreate();
 326         Log.d("QuickDic", "Application: onCreate");
 327         TransliteratorManager.init(null);
 328         staticInit(getApplicationContext());
 329
 330         languageButtonPixels = (int) TypedValue.applyDimension(
 331                 TypedValue.COMPLEX_UNIT_DIP, 60, getResources().getDisplayMetrics());
 332
 333         // Load the dictionaries we know about.
 334         dictionaryConfig = PersistentObjectCache.init(getApplicationContext()).read(
 335                 C.DICTIONARY_CONFIGS, DictionaryConfig.class);
 336         if (dictionaryConfig == null) {
 337             dictionaryConfig = new DictionaryConfig();
 338         }
 339         if (!dictionaryConfig.isValid()) {
 340             dictionaryConfig = new DictionaryConfig();
 341         }
 342
 343         // Theme stuff.
 344         setTheme(getSelectedTheme().themeId);
 345         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 346         prefs.registerOnSharedPreferenceChangeListener(new OnSharedPreferenceChangeListener() {
 347             @Override
 348             public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
 349                     String key) {
 350                 Log.d("QuickDic", "prefs changed: " + key);
 351                 if (key.equals(getString(R.string.themeKey))) {
 352                     setTheme(getSelectedTheme().themeId);
 353                 }
 354             }
 355         });
 356     }
 357
 358     public void onCreateGlobalOptionsMenu(
 359             final Context context, final Menu menu) {
 360         final MenuItem about = menu.add(getString(R.string.about));
 361         MenuItemCompat.setShowAsAction(about, MenuItem.SHOW_AS_ACTION_NEVER);
 362         about.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 363             public boolean onMenuItemClick(final MenuItem menuItem) {
 364                 final Intent intent = new Intent(getApplicationContext(), AboutActivity.class);
 365                 context.startActivity(intent);
 366                 return false;
 367             }
 368         });
 369
 370         final MenuItem help = menu.add(getString(R.string.help));
 371         MenuItemCompat.setShowAsAction(help, MenuItem.SHOW_AS_ACTION_NEVER);
 372         help.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 373             public boolean onMenuItemClick(final MenuItem menuItem) {
 374                 context.startActivity(HtmlDisplayActivity.getHelpLaunchIntent(getApplicationContext()));
 375                 return false;
 376             }
 377         });
 378
 379         final MenuItem preferences = menu.add(getString(R.string.settings));
 380         MenuItemCompat.setShowAsAction(preferences, MenuItem.SHOW_AS_ACTION_NEVER);
 381         preferences.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 382             public boolean onMenuItemClick(final MenuItem menuItem) {
 383                 PreferenceActivity.prefsMightHaveChanged = true;
 384                 final Intent intent = new Intent(getApplicationContext(), PreferenceActivity.class);
 385                 context.startActivity(intent);
 386                 return false;
 387             }
 388         });
 389
 390         final MenuItem reportIssue = menu.add(getString(R.string.reportIssue));
 391         MenuItemCompat.setShowAsAction(reportIssue, MenuItem.SHOW_AS_ACTION_NEVER);
 392         reportIssue.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 393             public boolean onMenuItemClick(final MenuItem menuItem) {
 394                 final Intent intent = new Intent(Intent.ACTION_VIEW);
 395                 intent.setData(Uri
 396                         .parse("http://github.com/rdoeffinger/Dictionary/issues"));
 397                 context.startActivity(intent);
 398                 return false;
 399             }
 400         });
 401     }
 402
 403     public synchronized File getDictDir() {
 404         // This metaphor doesn't work, because we've already reset
 405         // prefsMightHaveChanged.
 406         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 407         String dir = prefs.getString(getString(R.string.quickdicDirectoryKey), "");
 408         if (dir.isEmpty()) {
 409             final File defaultDictDir = new File(Environment.getExternalStorageDirectory(), "quickDic");
 410             dir = defaultDictDir.getAbsolutePath();
 411         }
 412         dictDir = new File(dir);
 413         dictDir.mkdirs();
 414         if (!dictDir.isDirectory() && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
 415              getApplicationContext().getExternalFilesDirs(null);
 416         }
 417         return dictDir;
 418     }
 419
 420     static public boolean checkFileCreate(File dir) {
 421         boolean res = false;
 422         File testfile = new File(dir, "quickdic_writetest");
 423         try {
 424             testfile.delete();
 425             res = testfile.createNewFile() & testfile.delete();
 426         } catch (Exception e) {
 427         }
 428         return res;
 429     }
 430
 431     public File getWordListFile() {
 432         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 433         String file = prefs.getString(getString(R.string.wordListFileKey), "");
 434         if (file.isEmpty()) {
 435             return new File(getDictDir(), "wordList.txt");
 436         }
 437         return new File(file);
 438     }
 439
 440     public Theme getSelectedTheme() {
 441         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 442         final String theme = prefs.getString(getString(R.string.themeKey), "themeLight");
 443         if (theme.equals("themeLight")) {
 444             return Theme.LIGHT;
 445         } else {
 446             return Theme.DEFAULT;
 447         }
 448     }
 449
 450     public File getPath(String uncompressedFilename) {
 451         return new File(getDictDir(), uncompressedFilename);
 452     }
 453
 454     String defaultLangISO2 = Locale.getDefault().getLanguage().toLowerCase();
 455     String defaultLangName = null;
 456     final Map<String, String> fileToNameCache = new LinkedHashMap<String, String>();
 457
 458     public String isoCodeToLocalizedLanguageName(final String isoCode) {
 459         final Language.LanguageResources languageResources = isoCodeToResources
 460                 .get(isoCode);
 461         final String lang = languageResources != null ? getApplicationContext().getString(
 462                 languageResources.nameId) : isoCode;
 463         return lang;
 464     }
 465
 466     public List<IndexInfo> sortedIndexInfos(List<IndexInfo> indexInfos) {
 467         // Hack to put the default locale first in the name.
 468         if (indexInfos.size() > 1 &&
 469                 indexInfos.get(1).shortName.toLowerCase().equals(defaultLangISO2)) {
 470             List<IndexInfo> result = new ArrayList<DictionaryInfo.IndexInfo>(indexInfos);
 471             ListUtil.swap(result, 0, 1);
 472             return result;
 473         }
 474         return indexInfos;
 475     }
 476
 477     public synchronized String getDictionaryName(final String uncompressedFilename) {
 478         final String currentLocale = Locale.getDefault().getLanguage().toLowerCase();
 479         if (!currentLocale.equals(defaultLangISO2)) {
 480             defaultLangISO2 = currentLocale;
 481             fileToNameCache.clear();
 482             defaultLangName = null;
 483         }
 484         if (defaultLangName == null) {
 485             defaultLangName = isoCodeToLocalizedLanguageName(defaultLangISO2);
 486         }
 487
 488         String name = fileToNameCache.get(uncompressedFilename);
 489         if (name != null) {
 490             return name;
 491         }
 492
 493         final DictionaryInfo dictionaryInfo = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 494                 .get(uncompressedFilename);
 495         if (dictionaryInfo != null) {
 496             final StringBuilder nameBuilder = new StringBuilder();
 497
 498             List<IndexInfo> sortedIndexInfos = sortedIndexInfos(dictionaryInfo.indexInfos);
 499             for (int i = 0; i < sortedIndexInfos.size(); ++i) {
 500                 if (i > 0) {
 501                     nameBuilder.append("-");
 502                 }
 503                 nameBuilder
 504                         .append(isoCodeToLocalizedLanguageName(sortedIndexInfos.get(i).shortName));
 505             }
 506             name = nameBuilder.toString();
 507         } else {
 508             name = uncompressedFilename.replace(".quickdic", "");
 509         }
 510         fileToNameCache.put(uncompressedFilename, name);
 511         return name;
 512     }
 513
 514     public View createButton(final Context context, final DictionaryInfo dictionaryInfo,
 515             final IndexInfo indexInfo) {
 516         LanguageResources languageResources = isoCodeToResources.get(indexInfo.shortName);
 517         View result;
 518
 519         if (languageResources == null || languageResources.flagId <= 0) {
 520             Button button = new Button(context);
 521             button.setText(indexInfo.shortName);
 522             result = button;
 523         } else {
 524             ImageButton button = new ImageButton(context);
 525             button.setImageResource(languageResources.flagId);
 526             button.setScaleType(ScaleType.FIT_CENTER);
 527             result = button;
 528         }
 529         result.setLayoutParams(new LinearLayout.LayoutParams(languageButtonPixels, LinearLayout.LayoutParams.MATCH_PARENT));
 530         return result;
 531     }
 532
 533     public synchronized void moveDictionaryToTop(final DictionaryInfo dictionaryInfo) {
 534         dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename);
 535         dictionaryConfig.dictionaryFilesOrdered.add(0, dictionaryInfo.uncompressedFilename);
 536         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 537     }
 538
 539     public synchronized void deleteDictionary(final DictionaryInfo dictionaryInfo) {
 540         while (dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename)) {
 541         }
 542         dictionaryConfig.uncompressedFilenameToDictionaryInfo
 543                 .remove(dictionaryInfo.uncompressedFilename);
 544         getPath(dictionaryInfo.uncompressedFilename).delete();
 545         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 546     }
 547
 548     final Comparator collator = USE_COLLATOR ? Collator.getInstance() : String.CASE_INSENSITIVE_ORDER;
 549     final Comparator<String> uncompressedFilenameComparator = new Comparator<String>() {
 550         @Override
 551         public int compare(String uncompressedFilename1, String uncompressedFilename2) {
 552             final String name1 = getDictionaryName(uncompressedFilename1);
 553             final String name2 = getDictionaryName(uncompressedFilename2);
 554             if (defaultLangName.length() > 0) {
 555                 if (name1.startsWith(defaultLangName + "-")
 556                         && !name2.startsWith(defaultLangName + "-")) {
 557                     return -1;
 558                 } else if (name2.startsWith(defaultLangName + "-")
 559                         && !name1.startsWith(defaultLangName + "-")) {
 560                     return 1;
 561                 }
 562             }
 563             return collator.compare(name1, name2);
 564         }
 565     };
 566     final Comparator<DictionaryInfo> dictionaryInfoComparator = new Comparator<DictionaryInfo>() {
 567         @Override
 568         public int compare(DictionaryInfo d1, DictionaryInfo d2) {
 569             // Single-index dictionaries first.
 570             if (d1.indexInfos.size() != d2.indexInfos.size()) {
 571                 return d1.indexInfos.size() - d2.indexInfos.size();
 572             }
 573             return uncompressedFilenameComparator.compare(d1.uncompressedFilename,
 574                     d2.uncompressedFilename);
 575         }
 576     };
 577
 578     public void backgroundUpdateDictionaries(final Runnable onUpdateFinished) {
 579         new Thread(new Runnable() {
 580             @Override
 581             public void run() {
 582                 final DictionaryConfig oldDictionaryConfig = new DictionaryConfig();
 583                 synchronized (this) {
 584                     oldDictionaryConfig.dictionaryFilesOrdered
 585                             .addAll(dictionaryConfig.dictionaryFilesOrdered);
 586                 }
 587                 final DictionaryConfig newDictionaryConfig = new DictionaryConfig();
 588                 for (final String uncompressedFilename : oldDictionaryConfig.dictionaryFilesOrdered) {
 589                     final File dictFile = getPath(uncompressedFilename);
 590                     final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(dictFile);
 591                     if (dictionaryInfo != null) {
 592                         newDictionaryConfig.dictionaryFilesOrdered.add(uncompressedFilename);
 593                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 594                                 uncompressedFilename, dictionaryInfo);
 595                     }
 596                 }
 597
 598                 // Are there dictionaries on the device that we didn't know
 599                 // about already?
 600                 // Pick them up and put them at the end of the list.
 601                 final List<String> toAddSorted = new ArrayList<String>();
 602                 final File[] dictDirFiles = getDictDir().listFiles();
 603                 if (dictDirFiles != null) {
 604                     for (final File file : dictDirFiles) {
 605                         if (file.getName().endsWith(".zip")) {
 606                             if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 607                                     .containsKey(file.getName().replace(".zip", ""))) {
 608                                 file.delete();
 609                             }
 610                         }
 611                         if (!file.getName().endsWith(".quickdic")) {
 612                             continue;
 613                         }
 614                         if (newDictionaryConfig.uncompressedFilenameToDictionaryInfo
 615                                 .containsKey(file.getName())) {
 616                             // We have it in our list already.
 617                             continue;
 618                         }
 619                         final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(file);
 620                         if (dictionaryInfo == null) {
 621                             Log.e(LOG, "Unable to parse dictionary: " + file.getPath());
 622                             continue;
 623                         }
 624
 625                         toAddSorted.add(file.getName());
 626                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 627                                 file.getName(), dictionaryInfo);
 628                     }
 629                 } else {
 630                     Log.w(LOG, "dictDir is not a directory: " + getDictDir().getPath());
 631                 }
 632                 if (!toAddSorted.isEmpty()) {
 633                     Collections.sort(toAddSorted, uncompressedFilenameComparator);
 634                     newDictionaryConfig.dictionaryFilesOrdered.addAll(toAddSorted);
 635                 }
 636
 637                 PersistentObjectCache.getInstance()
 638                         .write(C.DICTIONARY_CONFIGS, newDictionaryConfig);
 639                 synchronized (this) {
 640                     dictionaryConfig = newDictionaryConfig;
 641                 }
 642
 643                 try {
 644                     onUpdateFinished.run();
 645                 } catch (Exception e) {
 646                     Log.e(LOG, "Exception running callback.", e);
 647                 }
 648             }
 649         }).start();
 650     }
 651
 652     public boolean matchesFilters(final DictionaryInfo dictionaryInfo, final String[] filters) {
 653         if (filters == null) {
 654             return true;
 655         }
 656         for (final String filter : filters) {
 657             if (!getDictionaryName(dictionaryInfo.uncompressedFilename).toLowerCase().contains(
 658                     filter)) {
 659                 return false;
 660             }
 661         }
 662         return true;
 663     }
 664
 665     public synchronized List<DictionaryInfo> getDictionariesOnDevice(String[] filters) {
 666         final List<DictionaryInfo> result = new ArrayList<DictionaryInfo>(
 667                 dictionaryConfig.dictionaryFilesOrdered.size());
 668         for (final String uncompressedFilename : dictionaryConfig.dictionaryFilesOrdered) {
 669             final DictionaryInfo dictionaryInfo = dictionaryConfig.uncompressedFilenameToDictionaryInfo
 670                     .get(uncompressedFilename);
 671             if (dictionaryInfo != null && matchesFilters(dictionaryInfo, filters)) {
 672                 result.add(dictionaryInfo);
 673             }
 674         }
 675         return result;
 676     }
 677
 678     public List<DictionaryInfo> getDownloadableDictionaries(String[] filters) {
 679         final List<DictionaryInfo> result = new ArrayList<DictionaryInfo>(
 680                 dictionaryConfig.dictionaryFilesOrdered.size());
 681
 682         final Map<String, DictionaryInfo> remaining = new LinkedHashMap<String, DictionaryInfo>(
 683                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO);
 684         remaining.keySet().removeAll(dictionaryConfig.dictionaryFilesOrdered);
 685         for (final DictionaryInfo dictionaryInfo : remaining.values()) {
 686             if (matchesFilters(dictionaryInfo, filters)) {
 687                 result.add(dictionaryInfo);
 688             }
 689         }
 690         Collections.sort(result, dictionaryInfoComparator);
 691         return result;
 692     }
 693
 694     public synchronized boolean isDictionaryOnDevice(String uncompressedFilename) {
 695         return dictionaryConfig.uncompressedFilenameToDictionaryInfo.get(uncompressedFilename) != null;
 696     }
 697
 698     public boolean updateAvailable(final DictionaryInfo dictionaryInfo) {
 699         final DictionaryInfo downloadable =
 700                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.get(
 701                         dictionaryInfo.uncompressedFilename);
 702         return downloadable != null &&
 703                 downloadable.creationMillis > dictionaryInfo.creationMillis;
 704     }
 705
 706     public DictionaryInfo getDownloadable(final String uncompressedFilename) {
 707         final DictionaryInfo downloadable = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 708                 .get(uncompressedFilename);
 709         return downloadable;
 710     }
 711
 712 }