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.content.Context;
  18 import android.content.Intent;
  19 import android.content.SharedPreferences;
  20 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
  21 import android.net.Uri;
  22 import android.os.Build;
  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
  32 import com.hughes.android.dictionary.CollatorWrapper;
  33 import com.hughes.android.dictionary.DictionaryInfo.IndexInfo;
  34 import com.hughes.android.dictionary.engine.Dictionary;
  35 import com.hughes.android.dictionary.engine.TransliteratorManager;
  36 import com.hughes.android.util.PersistentObjectCache;
  37 import com.hughes.util.ListUtil;
  38
  39 import java.io.BufferedReader;
  40 import java.io.File;
  41 import java.io.IOException;
  42 import java.io.InputStreamReader;
  43 import java.io.Serializable;
  44 import java.util.ArrayList;
  45 import java.util.Collections;
  46 import java.util.Comparator;
  47 import java.util.HashMap;
  48 import java.util.List;
  49 import java.util.Locale;
  50 import java.util.Map;
  51
  52 public enum DictionaryApplication {
  53     INSTANCE;
  54
  55     private Context appContext;
  56
  57     static final String LOG = "QuickDicApp";
  58
  59     // If set to false, avoid use of ICU collator
  60     // Works well enough for most european languages,
  61     // gives faster startup and avoids crashes on some
  62     // devices due to Dalvik bugs (e.g. ARMv6, S5570i, CM11)
  63     // when using ICU4J.
  64     // Leave it enabled by default for correctness except
  65     // for my known broken development/performance test device config.
  66     //static public final boolean USE_COLLATOR = !android.os.Build.FINGERPRINT.equals("Samsung/cm_tassve/tassve:4.4.4/KTU84Q/20150211:userdebug/release-keys");
  67     static public final boolean USE_COLLATOR = true;
  68
  69     static public final TransliteratorManager.ThreadSetup threadBackground = new TransliteratorManager.ThreadSetup() {
  70         @Override
  71         public void onThreadStart() {
  72             // THREAD_PRIORITY_BACKGROUND seemed like a good idea, but it
  73             // can make Transliterator go from 20 seconds to 3 minutes (!)
  74             android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_LESS_FAVORABLE);
  75         }
  76     };
  77
  78     // Static, determined by resources (and locale).
  79     // Unordered.
  80     static Map<String, DictionaryInfo> DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO = null;
  81
  82     enum Theme {
  83         DEFAULT(R.style.Theme_Default,
  84         R.style.Theme_Default_TokenRow_Fg,
  85         R.color.theme_default_token_row_fg,
  86         R.drawable.theme_default_token_row_main_bg,
  87         R.drawable.theme_default_token_row_other_bg,
  88         R.drawable.theme_default_normal_row_bg),
  89
  90         LIGHT(R.style.Theme_Light,
  91         R.style.Theme_Light_TokenRow_Fg,
  92         R.color.theme_light_token_row_fg,
  93         R.drawable.theme_light_token_row_main_bg,
  94         R.drawable.theme_light_token_row_other_bg,
  95         R.drawable.theme_light_normal_row_bg);
  96
  97         Theme(final int themeId, final int tokenRowFg,
  98         final int tokenRowFgColor,
  99         final int tokenRowMainBg, final int tokenRowOtherBg,
 100         final int normalRowBg) {
 101             this.themeId = themeId;
 102             this.tokenRowFg = tokenRowFg;
 103             this.tokenRowFgColor = tokenRowFgColor;
 104             this.tokenRowMainBg = tokenRowMainBg;
 105             this.tokenRowOtherBg = tokenRowOtherBg;
 106             this.normalRowBg = normalRowBg;
 107         }
 108
 109         final int themeId;
 110         final int tokenRowFg;
 111         final int tokenRowFgColor;
 112         final int tokenRowMainBg;
 113         final int tokenRowOtherBg;
 114         final int normalRowBg;
 115     }
 116
 117     public static final class DictionaryConfig implements Serializable {
 118         private static final long serialVersionUID = -1444177164708201263L;
 119         // User-ordered list, persisted, just the ones that are/have been
 120         // present.
 121         final List<String> dictionaryFilesOrdered = new ArrayList<>();
 122
 123         final Map<String, DictionaryInfo> uncompressedFilenameToDictionaryInfo = new HashMap<>();
 124
 125         /**
 126          * Sometimes a deserialized version of this data structure isn't valid.
 127          */
 128         @SuppressWarnings("ConstantConditions")
 129         boolean isValid() {
 130             return uncompressedFilenameToDictionaryInfo != null && dictionaryFilesOrdered != null;
 131         }
 132     }
 133
 134     DictionaryConfig dictionaryConfig = null;
 135
 136     public int languageButtonPixels = -1;
 137
 138     static synchronized void staticInit(final Context context) {
 139         if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO != null) {
 140             return;
 141         }
 142         DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO = new HashMap<>();
 143         final BufferedReader reader = new BufferedReader(
 144             new InputStreamReader(context.getResources().openRawResource(R.raw.dictionary_info)));
 145         try {
 146             String line;
 147             while ((line = reader.readLine()) != null) {
 148                 if (line.length() == 0 || line.charAt(0) == '#') {
 149                     continue;
 150                 }
 151                 final DictionaryInfo dictionaryInfo = new DictionaryInfo(line);
 152                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.put(
 153                     dictionaryInfo.uncompressedFilename, dictionaryInfo);
 154             }
 155         } catch (IOException e) {
 156             Log.e(LOG, "Failed to load downloadable dictionary lists.", e);
 157         }
 158         try {
 159             reader.close();
 160         } catch (IOException ignored) {}
 161     }
 162
 163     public synchronized void init(Context c) {
 164         if (appContext != null) {
 165             assert c == appContext;
 166             return;
 167         }
 168         appContext = c;
 169         Log.d("QuickDic", "Application: onCreate");
 170         TransliteratorManager.init(null, threadBackground);
 171         staticInit(appContext);
 172
 173         languageButtonPixels = (int) TypedValue.applyDimension(
 174                                    TypedValue.COMPLEX_UNIT_DIP, 60, appContext.getResources().getDisplayMetrics());
 175
 176         // Load the dictionaries we know about.
 177         dictionaryConfig = PersistentObjectCache.init(appContext).read(
 178                                C.DICTIONARY_CONFIGS, DictionaryConfig.class);
 179         if (dictionaryConfig == null) {
 180             dictionaryConfig = new DictionaryConfig();
 181         }
 182         if (!dictionaryConfig.isValid()) {
 183             dictionaryConfig = new DictionaryConfig();
 184         }
 185
 186         // Theme stuff.
 187         appContext.setTheme(getSelectedTheme().themeId);
 188         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(appContext);
 189         prefs.registerOnSharedPreferenceChangeListener(new OnSharedPreferenceChangeListener() {
 190             @Override
 191             public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
 192                                                   String key) {
 193                 Log.d("QuickDic", "prefs changed: " + key);
 194                 if (key.equals(appContext.getString(R.string.themeKey))) {
 195                     appContext.setTheme(getSelectedTheme().themeId);
 196                 }
 197             }
 198         });
 199     }
 200
 201     public static void onCreateGlobalOptionsMenu(
 202         final Context context, final Menu menu) {
 203         final Context c = context.getApplicationContext();
 204
 205         final MenuItem preferences = menu.add(c.getString(R.string.settings));
 206         MenuItemCompat.setShowAsAction(preferences, MenuItem.SHOW_AS_ACTION_NEVER);
 207         preferences.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 208             public boolean onMenuItemClick(final MenuItem menuItem) {
 209                 PreferenceActivity.prefsMightHaveChanged = true;
 210                 final Intent intent = new Intent(c, PreferenceActivity.class);
 211                 context.startActivity(intent);
 212                 return false;
 213             }
 214         });
 215
 216         final MenuItem help = menu.add(c.getString(R.string.help));
 217         MenuItemCompat.setShowAsAction(help, MenuItem.SHOW_AS_ACTION_NEVER);
 218         help.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 219             public boolean onMenuItemClick(final MenuItem menuItem) {
 220                 context.startActivity(HtmlDisplayActivity.getHelpLaunchIntent(c));
 221                 return false;
 222             }
 223         });
 224
 225         final MenuItem reportIssue = menu.add(c.getString(R.string.reportIssue));
 226         MenuItemCompat.setShowAsAction(reportIssue, MenuItem.SHOW_AS_ACTION_NEVER);
 227         reportIssue.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 228             public boolean onMenuItemClick(final MenuItem menuItem) {
 229                 final Intent intent = new Intent(Intent.ACTION_VIEW);
 230                 intent.setData(Uri
 231                                .parse("https://github.com/rdoeffinger/Dictionary/issues"));
 232                 context.startActivity(intent);
 233                 return false;
 234             }
 235         });
 236
 237         final MenuItem about = menu.add(c.getString(R.string.about));
 238         MenuItemCompat.setShowAsAction(about, MenuItem.SHOW_AS_ACTION_NEVER);
 239         about.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 240             public boolean onMenuItemClick(final MenuItem menuItem) {
 241                 final Intent intent = new Intent(c, AboutActivity.class);
 242                 context.startActivity(intent);
 243                 return false;
 244             }
 245         });
 246     }
 247
 248     private String selectDefaultDir() {
 249         final File defaultDictDir = new File(Environment.getExternalStorageDirectory(), "quickDic");
 250         String dir = defaultDictDir.getAbsolutePath();
 251         File dictDir = new File(dir);
 252         String[] fileList = dictDir.isDirectory() ? dictDir.list() : null;
 253         if (fileList != null && fileList.length > 0) {
 254             return dir;
 255         }
 256         File efd = null;
 257         try {
 258             efd = appContext.getExternalFilesDir(null);
 259         } catch (Exception ignored) {
 260         }
 261         if (efd != null) {
 262             efd.mkdirs();
 263             if (!dictDir.isDirectory() && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
 264                 appContext.getExternalFilesDirs(null);
 265             }
 266             if (efd.isDirectory() && efd.canWrite() && checkFileCreate(efd)) {
 267                 return efd.getAbsolutePath();
 268             }
 269         }
 270         if (!dictDir.isDirectory() && !dictDir.mkdirs()) {
 271             return appContext.getFilesDir().getAbsolutePath();
 272         }
 273         return dir;
 274     }
 275
 276     public synchronized File getDictDir() {
 277         // This metaphor doesn't work, because we've already reset
 278         // prefsMightHaveChanged.
 279         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(appContext);
 280         String dir = prefs.getString(appContext.getString(R.string.quickdicDirectoryKey), "");
 281         if (dir.isEmpty()) {
 282             dir = selectDefaultDir();
 283         }
 284         File dictDir = new File(dir);
 285         dictDir.mkdirs();
 286         if (!dictDir.isDirectory() && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
 287             appContext.getExternalFilesDirs(null);
 288         }
 289         return dictDir;
 290     }
 291
 292     static public boolean checkFileCreate(File dir) {
 293         boolean res = false;
 294         File testfile = new File(dir, "quickdic_writetest");
 295         try {
 296             testfile.delete();
 297             res = testfile.createNewFile() & testfile.delete();
 298         } catch (Exception ignored) {
 299         }
 300         return res;
 301     }
 302
 303     public File getWordListFile() {
 304         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(appContext);
 305         String file = prefs.getString(appContext.getString(R.string.wordListFileKey), "");
 306         if (file.isEmpty()) {
 307             return new File(getDictDir(), "wordList.txt");
 308         }
 309         return new File(file);
 310     }
 311
 312     public Theme getSelectedTheme() {
 313         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(appContext);
 314         final String theme = prefs.getString(appContext.getString(R.string.themeKey), "themeLight");
 315         if (theme.equals("themeLight")) {
 316             return Theme.LIGHT;
 317         } else {
 318             return Theme.DEFAULT;
 319         }
 320     }
 321
 322     public File getPath(String uncompressedFilename) {
 323         return new File(getDictDir(), uncompressedFilename);
 324     }
 325
 326     String defaultLangISO2 = Locale.getDefault().getLanguage().toLowerCase();
 327     String defaultLangName = null;
 328     final Map<String, String> fileToNameCache = new HashMap<>();
 329
 330     public List<IndexInfo> sortedIndexInfos(List<IndexInfo> indexInfos) {
 331         // Hack to put the default locale first in the name.
 332         if (indexInfos.size() > 1 &&
 333                 indexInfos.get(1).shortName.toLowerCase().equals(defaultLangISO2)) {
 334             List<IndexInfo> result = new ArrayList<>(indexInfos);
 335             ListUtil.swap(result, 0, 1);
 336             return result;
 337         }
 338         return indexInfos;
 339     }
 340
 341     public synchronized String getDictionaryName(final String uncompressedFilename) {
 342         final String currentLocale = Locale.getDefault().getLanguage().toLowerCase();
 343         if (!currentLocale.equals(defaultLangISO2)) {
 344             defaultLangISO2 = currentLocale;
 345             fileToNameCache.clear();
 346             defaultLangName = null;
 347         }
 348         if (defaultLangName == null) {
 349             defaultLangName = IsoUtils.INSTANCE.isoCodeToLocalizedLanguageName(appContext, defaultLangISO2);
 350         }
 351
 352         String name = fileToNameCache.get(uncompressedFilename);
 353         if (name != null) {
 354             return name;
 355         }
 356
 357         final DictionaryInfo dictionaryInfo = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 358                                               .get(uncompressedFilename);
 359         if (dictionaryInfo != null) {
 360             final StringBuilder nameBuilder = new StringBuilder();
 361
 362             List<IndexInfo> sortedIndexInfos = sortedIndexInfos(dictionaryInfo.indexInfos);
 363             for (int i = 0; i < sortedIndexInfos.size(); ++i) {
 364                 if (i > 0) {
 365                     nameBuilder.append("-");
 366                 }
 367                 nameBuilder
 368                 .append(IsoUtils.INSTANCE.isoCodeToLocalizedLanguageName(appContext, sortedIndexInfos.get(i).shortName));
 369             }
 370             name = nameBuilder.toString();
 371         } else {
 372             name = uncompressedFilename.replace(".quickdic", "");
 373         }
 374         fileToNameCache.put(uncompressedFilename, name);
 375         return name;
 376     }
 377
 378     public synchronized void moveDictionaryToTop(final DictionaryInfo dictionaryInfo) {
 379         dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename);
 380         dictionaryConfig.dictionaryFilesOrdered.add(0, dictionaryInfo.uncompressedFilename);
 381         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 382     }
 383
 384     public synchronized void sortDictionaries() {
 385         Collections.sort(dictionaryConfig.dictionaryFilesOrdered, uncompressedFilenameComparator);
 386         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 387     }
 388
 389     public synchronized void deleteDictionary(final DictionaryInfo dictionaryInfo) {
 390         while (dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename)) {
 391         }
 392         dictionaryConfig.uncompressedFilenameToDictionaryInfo
 393         .remove(dictionaryInfo.uncompressedFilename);
 394         getPath(dictionaryInfo.uncompressedFilename).delete();
 395         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 396     }
 397
 398     final Comparator<Object> collator = USE_COLLATOR ? CollatorWrapper.getInstance() : null;
 399     final Comparator<String> uncompressedFilenameComparator = new Comparator<String>() {
 400         @Override
 401         public int compare(String uncompressedFilename1, String uncompressedFilename2) {
 402             final String name1 = getDictionaryName(uncompressedFilename1);
 403             final String name2 = getDictionaryName(uncompressedFilename2);
 404             if (defaultLangName.length() > 0) {
 405                 if (name1.startsWith(defaultLangName + "-")
 406                         && !name2.startsWith(defaultLangName + "-")) {
 407                     return -1;
 408                 } else if (name2.startsWith(defaultLangName + "-")
 409                            && !name1.startsWith(defaultLangName + "-")) {
 410                     return 1;
 411                 }
 412             }
 413             return collator != null ? collator.compare(name1, name2) : name1.compareToIgnoreCase(name2);
 414         }
 415     };
 416     final Comparator<DictionaryInfo> dictionaryInfoComparator = new Comparator<DictionaryInfo>() {
 417         @Override
 418         public int compare(DictionaryInfo d1, DictionaryInfo d2) {
 419             // Single-index dictionaries first.
 420             if (d1.indexInfos.size() != d2.indexInfos.size()) {
 421                 return d1.indexInfos.size() - d2.indexInfos.size();
 422             }
 423             return uncompressedFilenameComparator.compare(d1.uncompressedFilename,
 424                     d2.uncompressedFilename);
 425         }
 426     };
 427
 428     public void backgroundUpdateDictionaries(final Runnable onUpdateFinished) {
 429         new Thread(new Runnable() {
 430             @Override
 431             public void run() {
 432                 final DictionaryConfig oldDictionaryConfig = new DictionaryConfig();
 433                 synchronized (DictionaryApplication.this) {
 434                     oldDictionaryConfig.dictionaryFilesOrdered
 435                     .addAll(dictionaryConfig.dictionaryFilesOrdered);
 436                 }
 437                 final DictionaryConfig newDictionaryConfig = new DictionaryConfig();
 438                 for (final String uncompressedFilename : oldDictionaryConfig.dictionaryFilesOrdered) {
 439                     final File dictFile = getPath(uncompressedFilename);
 440                     final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(dictFile);
 441                     if (dictionaryInfo.isValid() || dictFile.exists()) {
 442                         newDictionaryConfig.dictionaryFilesOrdered.add(uncompressedFilename);
 443                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 444                             uncompressedFilename, dictionaryInfo);
 445                     }
 446                 }
 447
 448                 // Are there dictionaries on the device that we didn't know
 449                 // about already?
 450                 // Pick them up and put them at the end of the list.
 451                 final List<String> toAddSorted = new ArrayList<>();
 452                 final File[] dictDirFiles = getDictDir().listFiles();
 453                 if (dictDirFiles != null) {
 454                     for (final File file : dictDirFiles) {
 455                         if (file.getName().endsWith(".zip")) {
 456                             if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 457                                     .containsKey(file.getName().replace(".zip", ""))) {
 458                                 file.delete();
 459                             }
 460                         }
 461                         if (!file.getName().endsWith(".quickdic")) {
 462                             continue;
 463                         }
 464                         if (newDictionaryConfig.uncompressedFilenameToDictionaryInfo
 465                                 .containsKey(file.getName())) {
 466                             // We have it in our list already.
 467                             continue;
 468                         }
 469                         final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(file);
 470                         if (!dictionaryInfo.isValid()) {
 471                             Log.e(LOG, "Unable to parse dictionary: " + file.getPath());
 472                         }
 473
 474                         toAddSorted.add(file.getName());
 475                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 476                             file.getName(), dictionaryInfo);
 477                     }
 478                 } else {
 479                     Log.w(LOG, "dictDir is not a directory: " + getDictDir().getPath());
 480                 }
 481                 if (!toAddSorted.isEmpty()) {
 482                     Collections.sort(toAddSorted, uncompressedFilenameComparator);
 483                     newDictionaryConfig.dictionaryFilesOrdered.addAll(toAddSorted);
 484                 }
 485
 486                 try {
 487                     PersistentObjectCache.getInstance()
 488                     .write(C.DICTIONARY_CONFIGS, newDictionaryConfig);
 489                 } catch (Exception e) {
 490                     Log.e(LOG, "Failed persisting dictionary configs", e);
 491                 }
 492
 493                 synchronized (DictionaryApplication.this) {
 494                     dictionaryConfig = newDictionaryConfig;
 495                 }
 496
 497                 try {
 498                     onUpdateFinished.run();
 499                 } catch (Exception e) {
 500                     Log.e(LOG, "Exception running callback.", e);
 501                 }
 502             }
 503         }).start();
 504     }
 505
 506     private boolean matchesFilters(final DictionaryInfo dictionaryInfo, final String[] filters) {
 507         if (filters == null) {
 508             return true;
 509         }
 510         for (final String filter : filters) {
 511             if (!getDictionaryName(dictionaryInfo.uncompressedFilename).toLowerCase().contains(
 512                         filter)) {
 513                 return false;
 514             }
 515         }
 516         return true;
 517     }
 518
 519     public synchronized List<DictionaryInfo> getDictionariesOnDevice(String[] filters) {
 520         final List<DictionaryInfo> result = new ArrayList<>(
 521                 dictionaryConfig.dictionaryFilesOrdered.size());
 522         for (final String uncompressedFilename : dictionaryConfig.dictionaryFilesOrdered) {
 523             final DictionaryInfo dictionaryInfo = dictionaryConfig.uncompressedFilenameToDictionaryInfo
 524                                                   .get(uncompressedFilename);
 525             if (dictionaryInfo != null && matchesFilters(dictionaryInfo, filters)) {
 526                 result.add(dictionaryInfo);
 527             }
 528         }
 529         return result;
 530     }
 531
 532     public List<DictionaryInfo> getDownloadableDictionaries(String[] filters) {
 533         final List<DictionaryInfo> result = new ArrayList<>(
 534                 dictionaryConfig.dictionaryFilesOrdered.size());
 535
 536         final Map<String, DictionaryInfo> remaining = new HashMap<>(
 537                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO);
 538         remaining.keySet().removeAll(dictionaryConfig.dictionaryFilesOrdered);
 539         for (final DictionaryInfo dictionaryInfo : remaining.values()) {
 540             if (matchesFilters(dictionaryInfo, filters)) {
 541                 result.add(dictionaryInfo);
 542             }
 543         }
 544         Collections.sort(result, dictionaryInfoComparator);
 545         return result;
 546     }
 547
 548     public boolean updateAvailable(final DictionaryInfo dictionaryInfo) {
 549         final DictionaryInfo downloadable =
 550             DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.get(
 551                 dictionaryInfo.uncompressedFilename);
 552         return downloadable != null &&
 553                downloadable.creationMillis > dictionaryInfo.creationMillis;
 554     }
 555
 556     public DictionaryInfo getDownloadable(final String uncompressedFilename) {
 557         return DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.get(uncompressedFilename);
 558     }
 559
 560 }