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.CollatorWrapper;
  40 import com.hughes.android.dictionary.DictionaryInfo.IndexInfo;
  41 import com.hughes.android.dictionary.engine.Dictionary;
  42 import com.hughes.android.dictionary.engine.Language;
  43 import com.hughes.android.dictionary.engine.Language.LanguageResources;
  44 import com.hughes.android.dictionary.engine.TransliteratorManager;
  45 import com.hughes.android.util.PersistentObjectCache;
  46 import com.hughes.util.ListUtil;
  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.HashMap;
  57 import java.util.List;
  58 import java.util.Locale;
  59 import java.util.Map;
  60
  61 public enum DictionaryApplication {
  62     INSTANCE;
  63
  64     private Context appContext;
  65
  66     static final String LOG = "QuickDicApp";
  67
  68     // If set to false, avoid use of ICU collator
  69     // Works well enough for most european languages,
  70     // gives faster startup and avoids crashes on some
  71     // devices due to Dalvik bugs (e.g. ARMv6, S5570i, CM11)
  72     // when using ICU4J.
  73     // Leave it enabled by default for correctness except
  74     // for my known broken development/performance test device config.
  75     //static public final boolean USE_COLLATOR = !android.os.Build.FINGERPRINT.equals("Samsung/cm_tassve/tassve:4.4.4/KTU84Q/20150211:userdebug/release-keys");
  76     static public final boolean USE_COLLATOR = true;
  77
  78     static public final TransliteratorManager.ThreadSetup threadBackground = new TransliteratorManager.ThreadSetup() {
  79         @Override
  80         public void onThreadStart() {
  81             // THREAD_PRIORITY_BACKGROUND seemed like a good idea, but it
  82             // can make Transliterator go from 20 seconds to 3 minutes (!)
  83             android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_LESS_FAVORABLE);
  84         }
  85     };
  86
  87     // Static, determined by resources (and locale).
  88     // Unordered.
  89     static Map<String, DictionaryInfo> DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO = null;
  90
  91     enum Theme {
  92         DEFAULT(R.style.Theme_Default,
  93         R.style.Theme_Default_TokenRow_Fg,
  94         R.color.theme_default_token_row_fg,
  95         R.drawable.theme_default_token_row_main_bg,
  96         R.drawable.theme_default_token_row_other_bg,
  97         R.drawable.theme_default_normal_row_bg),
  98
  99         LIGHT(R.style.Theme_Light,
 100         R.style.Theme_Light_TokenRow_Fg,
 101         R.color.theme_light_token_row_fg,
 102         R.drawable.theme_light_token_row_main_bg,
 103         R.drawable.theme_light_token_row_other_bg,
 104         R.drawable.theme_light_normal_row_bg);
 105
 106         Theme(final int themeId, final int tokenRowFg,
 107         final int tokenRowFgColor,
 108         final int tokenRowMainBg, final int tokenRowOtherBg,
 109         final int normalRowBg) {
 110             this.themeId = themeId;
 111             this.tokenRowFg = tokenRowFg;
 112             this.tokenRowFgColor = tokenRowFgColor;
 113             this.tokenRowMainBg = tokenRowMainBg;
 114             this.tokenRowOtherBg = tokenRowOtherBg;
 115             this.normalRowBg = normalRowBg;
 116         }
 117
 118         final int themeId;
 119         final int tokenRowFg;
 120         final int tokenRowFgColor;
 121         final int tokenRowMainBg;
 122         final int tokenRowOtherBg;
 123         final int normalRowBg;
 124     }
 125
 126     public static final class DictionaryConfig implements Serializable {
 127         private static final long serialVersionUID = -1444177164708201263L;
 128         // User-ordered list, persisted, just the ones that are/have been
 129         // present.
 130         final List<String> dictionaryFilesOrdered = new ArrayList<String>();
 131
 132         final Map<String, DictionaryInfo> uncompressedFilenameToDictionaryInfo = new HashMap<String, DictionaryInfo>();
 133
 134         /**
 135          * Sometimes a deserialized version of this data structure isn't valid.
 136          * @return
 137          */
 138         boolean isValid() {
 139             return uncompressedFilenameToDictionaryInfo != null && dictionaryFilesOrdered != null;
 140         }
 141     }
 142
 143     DictionaryConfig dictionaryConfig = null;
 144
 145     public int languageButtonPixels = -1;
 146
 147     static synchronized void staticInit(final Context context) {
 148         if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO != null) {
 149             return;
 150         }
 151         DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO = new HashMap<String, DictionaryInfo>();
 152         final BufferedReader reader = new BufferedReader(
 153             new InputStreamReader(context.getResources().openRawResource(R.raw.dictionary_info)));
 154         try {
 155             String line;
 156             while ((line = reader.readLine()) != null) {
 157                 if (line.length() == 0 || line.charAt(0) == '#') {
 158                     continue;
 159                 }
 160                 final DictionaryInfo dictionaryInfo = new DictionaryInfo(line);
 161                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.put(
 162                     dictionaryInfo.uncompressedFilename, dictionaryInfo);
 163             }
 164         } catch (IOException e) {
 165             Log.e(LOG, "Failed to load downloadable dictionary lists.", e);
 166         }
 167         try {
 168             reader.close();
 169         } catch (IOException e) {}
 170     }
 171
 172     private File dictDir;
 173
 174     public synchronized void init(Context c) {
 175         if (appContext != null) {
 176             assert c == appContext;
 177             return;
 178         }
 179         appContext = c;
 180         Log.d("QuickDic", "Application: onCreate");
 181         TransliteratorManager.init(null, threadBackground);
 182         staticInit(appContext);
 183
 184         languageButtonPixels = (int) TypedValue.applyDimension(
 185                                    TypedValue.COMPLEX_UNIT_DIP, 60, appContext.getResources().getDisplayMetrics());
 186
 187         // Load the dictionaries we know about.
 188         dictionaryConfig = PersistentObjectCache.init(appContext).read(
 189                                C.DICTIONARY_CONFIGS, DictionaryConfig.class);
 190         if (dictionaryConfig == null) {
 191             dictionaryConfig = new DictionaryConfig();
 192         }
 193         if (!dictionaryConfig.isValid()) {
 194             dictionaryConfig = new DictionaryConfig();
 195         }
 196
 197         // Theme stuff.
 198         appContext.setTheme(getSelectedTheme().themeId);
 199         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(appContext);
 200         prefs.registerOnSharedPreferenceChangeListener(new OnSharedPreferenceChangeListener() {
 201             @Override
 202             public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
 203                                                   String key) {
 204                 Log.d("QuickDic", "prefs changed: " + key);
 205                 if (key.equals(appContext.getString(R.string.themeKey))) {
 206                     appContext.setTheme(getSelectedTheme().themeId);
 207                 }
 208             }
 209         });
 210     }
 211
 212     public static void onCreateGlobalOptionsMenu(
 213         final Context context, final Menu menu) {
 214         final Context c = context.getApplicationContext();
 215
 216         final MenuItem preferences = menu.add(c.getString(R.string.settings));
 217         MenuItemCompat.setShowAsAction(preferences, MenuItem.SHOW_AS_ACTION_NEVER);
 218         preferences.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 219             public boolean onMenuItemClick(final MenuItem menuItem) {
 220                 PreferenceActivity.prefsMightHaveChanged = true;
 221                 final Intent intent = new Intent(c, PreferenceActivity.class);
 222                 context.startActivity(intent);
 223                 return false;
 224             }
 225         });
 226
 227         final MenuItem help = menu.add(c.getString(R.string.help));
 228         MenuItemCompat.setShowAsAction(help, MenuItem.SHOW_AS_ACTION_NEVER);
 229         help.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 230             public boolean onMenuItemClick(final MenuItem menuItem) {
 231                 context.startActivity(HtmlDisplayActivity.getHelpLaunchIntent(c));
 232                 return false;
 233             }
 234         });
 235
 236         final MenuItem reportIssue = menu.add(c.getString(R.string.reportIssue));
 237         MenuItemCompat.setShowAsAction(reportIssue, MenuItem.SHOW_AS_ACTION_NEVER);
 238         reportIssue.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 239             public boolean onMenuItemClick(final MenuItem menuItem) {
 240                 final Intent intent = new Intent(Intent.ACTION_VIEW);
 241                 intent.setData(Uri
 242                                .parse("https://github.com/rdoeffinger/Dictionary/issues"));
 243                 context.startActivity(intent);
 244                 return false;
 245             }
 246         });
 247
 248         final MenuItem about = menu.add(c.getString(R.string.about));
 249         MenuItemCompat.setShowAsAction(about, MenuItem.SHOW_AS_ACTION_NEVER);
 250         about.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 251             public boolean onMenuItemClick(final MenuItem menuItem) {
 252                 final Intent intent = new Intent(c, AboutActivity.class);
 253                 context.startActivity(intent);
 254                 return false;
 255             }
 256         });
 257     }
 258
 259     private String selectDefaultDir() {
 260         final File defaultDictDir = new File(Environment.getExternalStorageDirectory(), "quickDic");
 261         String dir = defaultDictDir.getAbsolutePath();
 262         File dictDir = new File(dir);
 263         String[] fileList = dictDir.isDirectory() ? dictDir.list() : null;
 264         if (fileList != null && fileList.length > 0) {
 265             return dir;
 266         }
 267         File efd = null;
 268         try {
 269             efd = appContext.getExternalFilesDir(null);
 270         } catch (Exception e) {
 271         }
 272         if (efd != null) {
 273             efd.mkdirs();
 274             if (!dictDir.isDirectory() && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
 275                 appContext.getExternalFilesDirs(null);
 276             }
 277             if (efd.isDirectory() && efd.canWrite() && checkFileCreate(efd)) {
 278                 return efd.getAbsolutePath();
 279             }
 280         }
 281         if (!dictDir.isDirectory() && !dictDir.mkdirs()) {
 282             return appContext.getFilesDir().getAbsolutePath();
 283         }
 284         return dir;
 285     }
 286
 287     public synchronized File getDictDir() {
 288         // This metaphor doesn't work, because we've already reset
 289         // prefsMightHaveChanged.
 290         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(appContext);
 291         String dir = prefs.getString(appContext.getString(R.string.quickdicDirectoryKey), "");
 292         if (dir.isEmpty()) {
 293             dir = selectDefaultDir();
 294         }
 295         dictDir = new File(dir);
 296         dictDir.mkdirs();
 297         if (!dictDir.isDirectory() && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
 298             appContext.getExternalFilesDirs(null);
 299         }
 300         return dictDir;
 301     }
 302
 303     static public boolean checkFileCreate(File dir) {
 304         boolean res = false;
 305         File testfile = new File(dir, "quickdic_writetest");
 306         try {
 307             testfile.delete();
 308             res = testfile.createNewFile() & testfile.delete();
 309         } catch (Exception e) {
 310         }
 311         return res;
 312     }
 313
 314     public File getWordListFile() {
 315         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(appContext);
 316         String file = prefs.getString(appContext.getString(R.string.wordListFileKey), "");
 317         if (file.isEmpty()) {
 318             return new File(getDictDir(), "wordList.txt");
 319         }
 320         return new File(file);
 321     }
 322
 323     public Theme getSelectedTheme() {
 324         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(appContext);
 325         final String theme = prefs.getString(appContext.getString(R.string.themeKey), "themeLight");
 326         if (theme.equals("themeLight")) {
 327             return Theme.LIGHT;
 328         } else {
 329             return Theme.DEFAULT;
 330         }
 331     }
 332
 333     public File getPath(String uncompressedFilename) {
 334         return new File(getDictDir(), uncompressedFilename);
 335     }
 336
 337     String defaultLangISO2 = Locale.getDefault().getLanguage().toLowerCase();
 338     String defaultLangName = null;
 339     final Map<String, String> fileToNameCache = new HashMap<String, String>();
 340
 341     public List<IndexInfo> sortedIndexInfos(List<IndexInfo> indexInfos) {
 342         // Hack to put the default locale first in the name.
 343         if (indexInfos.size() > 1 &&
 344                 indexInfos.get(1).shortName.toLowerCase().equals(defaultLangISO2)) {
 345             List<IndexInfo> result = new ArrayList<DictionaryInfo.IndexInfo>(indexInfos);
 346             ListUtil.swap(result, 0, 1);
 347             return result;
 348         }
 349         return indexInfos;
 350     }
 351
 352     public synchronized String getDictionaryName(final String uncompressedFilename) {
 353         final String currentLocale = Locale.getDefault().getLanguage().toLowerCase();
 354         if (!currentLocale.equals(defaultLangISO2)) {
 355             defaultLangISO2 = currentLocale;
 356             fileToNameCache.clear();
 357             defaultLangName = null;
 358         }
 359         if (defaultLangName == null) {
 360             defaultLangName = IsoUtils.INSTANCE.isoCodeToLocalizedLanguageName(appContext, defaultLangISO2);
 361         }
 362
 363         String name = fileToNameCache.get(uncompressedFilename);
 364         if (name != null) {
 365             return name;
 366         }
 367
 368         final DictionaryInfo dictionaryInfo = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 369                                               .get(uncompressedFilename);
 370         if (dictionaryInfo != null) {
 371             final StringBuilder nameBuilder = new StringBuilder();
 372
 373             List<IndexInfo> sortedIndexInfos = sortedIndexInfos(dictionaryInfo.indexInfos);
 374             for (int i = 0; i < sortedIndexInfos.size(); ++i) {
 375                 if (i > 0) {
 376                     nameBuilder.append("-");
 377                 }
 378                 nameBuilder
 379                 .append(IsoUtils.INSTANCE.isoCodeToLocalizedLanguageName(appContext, sortedIndexInfos.get(i).shortName));
 380             }
 381             name = nameBuilder.toString();
 382         } else {
 383             name = uncompressedFilename.replace(".quickdic", "");
 384         }
 385         fileToNameCache.put(uncompressedFilename, name);
 386         return name;
 387     }
 388
 389     public synchronized void moveDictionaryToTop(final DictionaryInfo dictionaryInfo) {
 390         dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename);
 391         dictionaryConfig.dictionaryFilesOrdered.add(0, dictionaryInfo.uncompressedFilename);
 392         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 393     }
 394
 395     public synchronized void sortDictionaries() {
 396         Collections.sort(dictionaryConfig.dictionaryFilesOrdered, uncompressedFilenameComparator);
 397         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 398     }
 399
 400     public synchronized void deleteDictionary(final DictionaryInfo dictionaryInfo) {
 401         while (dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename)) {
 402         }
 403         dictionaryConfig.uncompressedFilenameToDictionaryInfo
 404         .remove(dictionaryInfo.uncompressedFilename);
 405         getPath(dictionaryInfo.uncompressedFilename).delete();
 406         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 407     }
 408
 409     final Comparator collator = USE_COLLATOR ? CollatorWrapper.getInstance() : String.CASE_INSENSITIVE_ORDER;
 410     final Comparator<String> uncompressedFilenameComparator = new Comparator<String>() {
 411         @Override
 412         public int compare(String uncompressedFilename1, String uncompressedFilename2) {
 413             final String name1 = getDictionaryName(uncompressedFilename1);
 414             final String name2 = getDictionaryName(uncompressedFilename2);
 415             if (defaultLangName.length() > 0) {
 416                 if (name1.startsWith(defaultLangName + "-")
 417                         && !name2.startsWith(defaultLangName + "-")) {
 418                     return -1;
 419                 } else if (name2.startsWith(defaultLangName + "-")
 420                            && !name1.startsWith(defaultLangName + "-")) {
 421                     return 1;
 422                 }
 423             }
 424             return collator.compare(name1, name2);
 425         }
 426     };
 427     final Comparator<DictionaryInfo> dictionaryInfoComparator = new Comparator<DictionaryInfo>() {
 428         @Override
 429         public int compare(DictionaryInfo d1, DictionaryInfo d2) {
 430             // Single-index dictionaries first.
 431             if (d1.indexInfos.size() != d2.indexInfos.size()) {
 432                 return d1.indexInfos.size() - d2.indexInfos.size();
 433             }
 434             return uncompressedFilenameComparator.compare(d1.uncompressedFilename,
 435                     d2.uncompressedFilename);
 436         }
 437     };
 438
 439     public void backgroundUpdateDictionaries(final Runnable onUpdateFinished) {
 440         new Thread(new Runnable() {
 441             @Override
 442             public void run() {
 443                 final DictionaryConfig oldDictionaryConfig = new DictionaryConfig();
 444                 synchronized (DictionaryApplication.this) {
 445                     oldDictionaryConfig.dictionaryFilesOrdered
 446                     .addAll(dictionaryConfig.dictionaryFilesOrdered);
 447                 }
 448                 final DictionaryConfig newDictionaryConfig = new DictionaryConfig();
 449                 for (final String uncompressedFilename : oldDictionaryConfig.dictionaryFilesOrdered) {
 450                     final File dictFile = getPath(uncompressedFilename);
 451                     final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(dictFile);
 452                     if (dictionaryInfo.isValid() || dictFile.exists()) {
 453                         newDictionaryConfig.dictionaryFilesOrdered.add(uncompressedFilename);
 454                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 455                             uncompressedFilename, dictionaryInfo);
 456                     }
 457                 }
 458
 459                 // Are there dictionaries on the device that we didn't know
 460                 // about already?
 461                 // Pick them up and put them at the end of the list.
 462                 final List<String> toAddSorted = new ArrayList<String>();
 463                 final File[] dictDirFiles = getDictDir().listFiles();
 464                 if (dictDirFiles != null) {
 465                     for (final File file : dictDirFiles) {
 466                         if (file.getName().endsWith(".zip")) {
 467                             if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 468                                     .containsKey(file.getName().replace(".zip", ""))) {
 469                                 file.delete();
 470                             }
 471                         }
 472                         if (!file.getName().endsWith(".quickdic")) {
 473                             continue;
 474                         }
 475                         if (newDictionaryConfig.uncompressedFilenameToDictionaryInfo
 476                                 .containsKey(file.getName())) {
 477                             // We have it in our list already.
 478                             continue;
 479                         }
 480                         final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(file);
 481                         if (!dictionaryInfo.isValid()) {
 482                             Log.e(LOG, "Unable to parse dictionary: " + file.getPath());
 483                         }
 484
 485                         toAddSorted.add(file.getName());
 486                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 487                             file.getName(), dictionaryInfo);
 488                     }
 489                 } else {
 490                     Log.w(LOG, "dictDir is not a directory: " + getDictDir().getPath());
 491                 }
 492                 if (!toAddSorted.isEmpty()) {
 493                     Collections.sort(toAddSorted, uncompressedFilenameComparator);
 494                     newDictionaryConfig.dictionaryFilesOrdered.addAll(toAddSorted);
 495                 }
 496
 497                 try {
 498                     PersistentObjectCache.getInstance()
 499                     .write(C.DICTIONARY_CONFIGS, newDictionaryConfig);
 500                 } catch (Exception e) {
 501                     Log.e(LOG, "Failed persisting dictionary configs", e);
 502                 }
 503
 504                 synchronized (DictionaryApplication.this) {
 505                     dictionaryConfig = newDictionaryConfig;
 506                 }
 507
 508                 try {
 509                     onUpdateFinished.run();
 510                 } catch (Exception e) {
 511                     Log.e(LOG, "Exception running callback.", e);
 512                 }
 513             }
 514         }).start();
 515     }
 516
 517     public boolean matchesFilters(final DictionaryInfo dictionaryInfo, final String[] filters) {
 518         if (filters == null) {
 519             return true;
 520         }
 521         for (final String filter : filters) {
 522             if (!getDictionaryName(dictionaryInfo.uncompressedFilename).toLowerCase().contains(
 523                         filter)) {
 524                 return false;
 525             }
 526         }
 527         return true;
 528     }
 529
 530     public synchronized List<DictionaryInfo> getDictionariesOnDevice(String[] filters) {
 531         final List<DictionaryInfo> result = new ArrayList<DictionaryInfo>(
 532             dictionaryConfig.dictionaryFilesOrdered.size());
 533         for (final String uncompressedFilename : dictionaryConfig.dictionaryFilesOrdered) {
 534             final DictionaryInfo dictionaryInfo = dictionaryConfig.uncompressedFilenameToDictionaryInfo
 535                                                   .get(uncompressedFilename);
 536             if (dictionaryInfo != null && matchesFilters(dictionaryInfo, filters)) {
 537                 result.add(dictionaryInfo);
 538             }
 539         }
 540         return result;
 541     }
 542
 543     public List<DictionaryInfo> getDownloadableDictionaries(String[] filters) {
 544         final List<DictionaryInfo> result = new ArrayList<DictionaryInfo>(
 545             dictionaryConfig.dictionaryFilesOrdered.size());
 546
 547         final Map<String, DictionaryInfo> remaining = new HashMap<String, DictionaryInfo>(
 548             DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO);
 549         remaining.keySet().removeAll(dictionaryConfig.dictionaryFilesOrdered);
 550         for (final DictionaryInfo dictionaryInfo : remaining.values()) {
 551             if (matchesFilters(dictionaryInfo, filters)) {
 552                 result.add(dictionaryInfo);
 553             }
 554         }
 555         Collections.sort(result, dictionaryInfoComparator);
 556         return result;
 557     }
 558
 559     public synchronized boolean isDictionaryOnDevice(String uncompressedFilename) {
 560         return dictionaryConfig.uncompressedFilenameToDictionaryInfo.get(uncompressedFilename) != null;
 561     }
 562
 563     public boolean updateAvailable(final DictionaryInfo dictionaryInfo) {
 564         final DictionaryInfo downloadable =
 565             DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.get(
 566                 dictionaryInfo.uncompressedFilename);
 567         return downloadable != null &&
 568                downloadable.creationMillis > dictionaryInfo.creationMillis;
 569     }
 570
 571     public DictionaryInfo getDownloadable(final String uncompressedFilename) {
 572         final DictionaryInfo downloadable = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 573                                             .get(uncompressedFilename);
 574         return downloadable;
 575     }
 576
 577 }