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 java.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.HashMap;
  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     // when using ICU4J.
  70     // Leave it enabled by default for correctness except
  71     // for my known broken development/performance test device config.
  72     //static public final boolean USE_COLLATOR = !android.os.Build.FINGERPRINT.equals("Samsung/cm_tassve/tassve:4.4.4/KTU84Q/20150211:userdebug/release-keys");
  73     static public final boolean USE_COLLATOR = true;
  74
  75     static public final TransliteratorManager.ThreadSetup threadBackground = new TransliteratorManager.ThreadSetup() {
  76         @Override
  77         public void onThreadStart() {
  78             // THREAD_PRIORITY_BACKGROUND seemed like a good idea, but it
  79             // can make Transliterator go from 20 seconds to 3 minutes (!)
  80             android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_LESS_FAVORABLE);
  81         }
  82     };
  83
  84     // Static, determined by resources (and locale).
  85     // Unordered.
  86     static Map<String, DictionaryInfo> DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO = null;
  87
  88     enum Theme {
  89         DEFAULT(R.style.Theme_Default,
  90         R.style.Theme_Default_TokenRow_Fg,
  91         R.color.theme_default_token_row_fg,
  92         R.drawable.theme_default_token_row_main_bg,
  93         R.drawable.theme_default_token_row_other_bg,
  94         R.drawable.theme_default_normal_row_bg),
  95
  96         LIGHT(R.style.Theme_Light,
  97         R.style.Theme_Light_TokenRow_Fg,
  98         R.color.theme_light_token_row_fg,
  99         R.drawable.theme_light_token_row_main_bg,
 100         R.drawable.theme_light_token_row_other_bg,
 101         R.drawable.theme_light_normal_row_bg);
 102
 103         Theme(final int themeId, final int tokenRowFg,
 104         final int tokenRowFgColor,
 105         final int tokenRowMainBg, final int tokenRowOtherBg,
 106         final int normalRowBg) {
 107             this.themeId = themeId;
 108             this.tokenRowFg = tokenRowFg;
 109             this.tokenRowFgColor = tokenRowFgColor;
 110             this.tokenRowMainBg = tokenRowMainBg;
 111             this.tokenRowOtherBg = tokenRowOtherBg;
 112             this.normalRowBg = normalRowBg;
 113         }
 114
 115         final int themeId;
 116         final int tokenRowFg;
 117         final int tokenRowFgColor;
 118         final int tokenRowMainBg;
 119         final int tokenRowOtherBg;
 120         final int normalRowBg;
 121     }
 122
 123     // Useful:
 124     // http://www.loc.gov/standards/iso639-2/php/code_list.php
 125     public static final Map<String, LanguageResources> isoCodeToResources = new HashMap<String, LanguageResources>();
 126     static {
 127         isoCodeToResources.put("AF", new LanguageResources("Afrikaans", R.string.AF,
 128                                R.drawable.flag_of_south_africa));
 129         isoCodeToResources.put("SQ", new LanguageResources("Albanian", R.string.SQ,
 130                                R.drawable.flag_of_albania));
 131         isoCodeToResources.put("AR",
 132                                new LanguageResources("Arabic", R.string.AR, R.drawable.arabic));
 133         isoCodeToResources.put("HY", new LanguageResources("Armenian", R.string.HY,
 134                                R.drawable.flag_of_armenia));
 135         isoCodeToResources.put("BE", new LanguageResources("Belarusian", R.string.BE,
 136                                R.drawable.flag_of_belarus));
 137         isoCodeToResources.put("BN", new LanguageResources("Bengali", R.string.BN));
 138         isoCodeToResources.put("BS", new LanguageResources("Bosnian", R.string.BS,
 139                                R.drawable.flag_of_bosnia_and_herzegovina));
 140         isoCodeToResources.put("BG", new LanguageResources("Bulgarian", R.string.BG,
 141                                R.drawable.flag_of_bulgaria));
 142         isoCodeToResources.put("MY", new LanguageResources("Burmese", R.string.MY,
 143                                R.drawable.flag_of_myanmar));
 144         isoCodeToResources.put("ZH", new LanguageResources("Chinese", R.string.ZH,
 145                                R.drawable.flag_of_the_peoples_republic_of_china));
 146         isoCodeToResources.put("cmn", new LanguageResources("Mandarin", R.string.cmn,
 147                                R.drawable.flag_of_the_peoples_republic_of_china));
 148         isoCodeToResources.put("yue", new LanguageResources("Cantonese", R.string.yue,
 149                                R.drawable.flag_of_hong_kong));
 150         isoCodeToResources.put("CA", new LanguageResources("Catalan", R.string.CA));
 151         isoCodeToResources.put("HR", new LanguageResources("Croatian", R.string.HR,
 152                                R.drawable.flag_of_croatia));
 153         isoCodeToResources.put("CS", new LanguageResources("Czech", R.string.CS,
 154                                R.drawable.flag_of_the_czech_republic));
 155         isoCodeToResources.put("DA", new LanguageResources("Danish", R.string.DA,
 156                                R.drawable.flag_of_denmark));
 157         isoCodeToResources.put("NL", new LanguageResources("Dutch", R.string.NL,
 158                                R.drawable.flag_of_the_netherlands));
 159         isoCodeToResources.put("EN", new LanguageResources("English", R.string.EN,
 160                                R.drawable.flag_of_the_united_kingdom));
 161         isoCodeToResources.put("EO", new LanguageResources("Esperanto", R.string.EO,
 162                                R.drawable.flag_of_esperanto));
 163         isoCodeToResources.put("ET", new LanguageResources("Estonian", R.string.ET,
 164                                R.drawable.flag_of_estonia));
 165         isoCodeToResources.put("FI", new LanguageResources("Finnish", R.string.FI,
 166                                R.drawable.flag_of_finland));
 167         isoCodeToResources.put("FR", new LanguageResources("French", R.string.FR,
 168                                R.drawable.flag_of_france));
 169         isoCodeToResources.put("DE", new LanguageResources("German", R.string.DE,
 170                                R.drawable.flag_of_germany));
 171         isoCodeToResources.put("EL", new LanguageResources("Greek", R.string.EL,
 172                                R.drawable.flag_of_greece));
 173         isoCodeToResources.put("grc", new LanguageResources("Ancient Greek", R.string.grc));
 174         isoCodeToResources.put("haw", new LanguageResources("Hawaiian", R.string.haw,
 175                                R.drawable.flag_of_hawaii));
 176         isoCodeToResources.put("HE", new LanguageResources("Hebrew", R.string.HE,
 177                                R.drawable.flag_of_israel));
 178         isoCodeToResources.put("HI", new LanguageResources("Hindi", R.string.HI, R.drawable.hindi));
 179         isoCodeToResources.put("HU", new LanguageResources("Hungarian", R.string.HU,
 180                                R.drawable.flag_of_hungary));
 181         isoCodeToResources.put("IS", new LanguageResources("Icelandic", R.string.IS,
 182                                R.drawable.flag_of_iceland));
 183         isoCodeToResources.put("ID", new LanguageResources("Indonesian", R.string.ID,
 184                                R.drawable.flag_of_indonesia));
 185         isoCodeToResources.put("GA", new LanguageResources("Irish", R.string.GA,
 186                                R.drawable.flag_of_ireland));
 187         isoCodeToResources.put("GD", new LanguageResources("Scottish Gaelic", R.string.GD,
 188                                R.drawable.flag_of_scotland));
 189         isoCodeToResources.put("GV", new LanguageResources("Manx", R.string.GV,
 190                                R.drawable.flag_of_the_isle_of_man));
 191         isoCodeToResources.put("IT", new LanguageResources("Italian", R.string.IT,
 192                                R.drawable.flag_of_italy));
 193         isoCodeToResources.put("LA", new LanguageResources("Latin", R.string.LA));
 194         isoCodeToResources.put("LV", new LanguageResources("Latvian", R.string.LV,
 195                                R.drawable.flag_of_latvia));
 196         isoCodeToResources.put("LT", new LanguageResources("Lithuanian", R.string.LT,
 197                                R.drawable.flag_of_lithuania));
 198         isoCodeToResources.put("JA", new LanguageResources("Japanese", R.string.JA,
 199                                R.drawable.flag_of_japan));
 200         isoCodeToResources.put("KO", new LanguageResources("Korean", R.string.KO,
 201                                R.drawable.flag_of_south_korea));
 202         isoCodeToResources.put("KU", new LanguageResources("Kurdish", R.string.KU));
 203         isoCodeToResources.put("MS", new LanguageResources("Malay", R.string.MS,
 204                                R.drawable.flag_of_malaysia));
 205         isoCodeToResources.put("MI", new LanguageResources("Maori", R.string.MI,
 206                                R.drawable.flag_of_new_zealand));
 207         isoCodeToResources.put("MN", new LanguageResources("Mongolian", R.string.MN,
 208                                R.drawable.flag_of_mongolia));
 209         isoCodeToResources.put("NE", new LanguageResources("Nepali", R.string.NE,
 210                                R.drawable.flag_of_nepal));
 211         isoCodeToResources.put("NO", new LanguageResources("Norwegian", R.string.NO,
 212                                R.drawable.flag_of_norway));
 213         isoCodeToResources.put("FA", new LanguageResources("Persian", R.string.FA,
 214                                R.drawable.flag_of_iran));
 215         isoCodeToResources.put("PL", new LanguageResources("Polish", R.string.PL,
 216                                R.drawable.flag_of_poland));
 217         isoCodeToResources.put("PT", new LanguageResources("Portuguese", R.string.PT,
 218                                R.drawable.flag_of_portugal));
 219         isoCodeToResources.put("PA", new LanguageResources("Punjabi", R.string.PA));
 220         isoCodeToResources.put("RO", new LanguageResources("Romanian", R.string.RO,
 221                                R.drawable.flag_of_romania));
 222         isoCodeToResources.put("RU", new LanguageResources("Russian", R.string.RU,
 223                                R.drawable.flag_of_russia));
 224         isoCodeToResources.put("SA", new LanguageResources("Sanskrit", R.string.SA));
 225         isoCodeToResources.put("SR", new LanguageResources("Serbian", R.string.SR,
 226                                R.drawable.flag_of_serbia));
 227         isoCodeToResources.put("SK", new LanguageResources("Slovak", R.string.SK,
 228                                R.drawable.flag_of_slovakia));
 229         isoCodeToResources.put("SL", new LanguageResources("Slovenian", R.string.SL,
 230                                R.drawable.flag_of_slovenia));
 231         isoCodeToResources.put("SO", new LanguageResources("Somali", R.string.SO,
 232                                R.drawable.flag_of_somalia));
 233         isoCodeToResources.put("ES", new LanguageResources("Spanish", R.string.ES,
 234                                R.drawable.flag_of_spain));
 235         isoCodeToResources.put("SW", new LanguageResources("Swahili", R.string.SW));
 236         isoCodeToResources.put("SV", new LanguageResources("Swedish", R.string.SV,
 237                                R.drawable.flag_of_sweden));
 238         isoCodeToResources.put("TL", new LanguageResources("Tagalog", R.string.TL));
 239         isoCodeToResources.put("TG", new LanguageResources("Tajik", R.string.TG,
 240                                R.drawable.flag_of_tajikistan));
 241         isoCodeToResources.put("TH", new LanguageResources("Thai", R.string.TH,
 242                                R.drawable.flag_of_thailand));
 243         isoCodeToResources.put("BO", new LanguageResources("Tibetan", R.string.BO));
 244         isoCodeToResources.put("TR", new LanguageResources("Turkish", R.string.TR,
 245                                R.drawable.flag_of_turkey));
 246         isoCodeToResources.put("UK", new LanguageResources("Ukrainian", R.string.UK,
 247                                R.drawable.flag_of_ukraine));
 248         isoCodeToResources.put("UR", new LanguageResources("Urdu", R.string.UR));
 249         isoCodeToResources.put("VI", new LanguageResources("Vietnamese", R.string.VI,
 250                                R.drawable.flag_of_vietnam));
 251         isoCodeToResources.put("CI", new LanguageResources("Welsh", R.string.CI,
 252                                R.drawable.flag_of_wales_2));
 253         isoCodeToResources.put("YI", new LanguageResources("Yiddish", R.string.YI));
 254         isoCodeToResources.put("ZU", new LanguageResources("Zulu", R.string.ZU));
 255         isoCodeToResources.put("AZ", new LanguageResources("Azeri", R.string.AZ,
 256                                R.drawable.flag_of_azerbaijan));
 257         isoCodeToResources.put("EU", new LanguageResources("Basque", R.string.EU,
 258                                R.drawable.flag_of_the_basque_country));
 259         isoCodeToResources.put("BR", new LanguageResources("Breton", R.string.BR));
 260         isoCodeToResources.put("MR", new LanguageResources("Marathi", R.string.MR));
 261         isoCodeToResources.put("FO", new LanguageResources("Faroese", R.string.FO));
 262         isoCodeToResources.put("GL", new LanguageResources("Galician", R.string.GL,
 263                                R.drawable.flag_of_galicia));
 264         isoCodeToResources.put("KA", new LanguageResources("Georgian", R.string.KA,
 265                                R.drawable.flag_of_georgia));
 266         isoCodeToResources.put("HT", new LanguageResources("Haitian Creole", R.string.HT,
 267                                R.drawable.flag_of_haiti));
 268         isoCodeToResources.put("LB", new LanguageResources("Luxembourgish", R.string.LB,
 269                                R.drawable.flag_of_luxembourg));
 270         isoCodeToResources.put("MK", new LanguageResources("Macedonian", R.string.MK,
 271                                R.drawable.flag_of_macedonia));
 272         isoCodeToResources.put("LO", new LanguageResources("Lao", R.string.LO,
 273                                R.drawable.flag_of_laos));
 274         isoCodeToResources.put("ML", new LanguageResources("Malayalam", R.string.ML));
 275         isoCodeToResources.put("SL", new LanguageResources("Slovenian", R.string.SL,
 276                                R.drawable.flag_of_slovenia));
 277         isoCodeToResources.put("TA", new LanguageResources("Tamil", R.string.TA));
 278         isoCodeToResources.put("SH", new LanguageResources("Serbo-Croatian", R.string.SH));
 279         isoCodeToResources.put("SD", new LanguageResources("Sindhi", R.string.SD));
 280
 281         // Hack to allow lower-case ISO codes to work:
 282         for (final String isoCode : new ArrayList<String>(isoCodeToResources.keySet())) {
 283             isoCodeToResources.put(isoCode.toLowerCase(), isoCodeToResources.get(isoCode));
 284         }
 285
 286     }
 287
 288     public static final class DictionaryConfig implements Serializable {
 289         private static final long serialVersionUID = -1444177164708201263L;
 290         // User-ordered list, persisted, just the ones that are/have been
 291         // present.
 292         final List<String> dictionaryFilesOrdered = new ArrayList<String>();
 293
 294         final Map<String, DictionaryInfo> uncompressedFilenameToDictionaryInfo = new HashMap<String, DictionaryInfo>();
 295
 296         /**
 297          * Sometimes a deserialized version of this data structure isn't valid.
 298          * @return
 299          */
 300         boolean isValid() {
 301             return uncompressedFilenameToDictionaryInfo != null && dictionaryFilesOrdered != null;
 302         }
 303     }
 304
 305     DictionaryConfig dictionaryConfig = null;
 306
 307     int languageButtonPixels = -1;
 308
 309     static synchronized void staticInit(final Context context) {
 310         if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO != null) {
 311             return;
 312         }
 313         DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO = new HashMap<String, DictionaryInfo>();
 314         final BufferedReader reader = new BufferedReader(
 315             new InputStreamReader(context.getResources().openRawResource(R.raw.dictionary_info)));
 316         try {
 317             String line;
 318             while ((line = reader.readLine()) != null) {
 319                 if (line.startsWith("#") || line.length() == 0) {
 320                     continue;
 321                 }
 322                 final DictionaryInfo dictionaryInfo = new DictionaryInfo(line);
 323                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.put(
 324                     dictionaryInfo.uncompressedFilename, dictionaryInfo);
 325             }
 326         } catch (IOException e) {
 327             Log.e(LOG, "Failed to load downloadable dictionary lists.", e);
 328         }
 329         try {
 330             reader.close();
 331         } catch (IOException e) {}
 332     }
 333
 334     private File dictDir;
 335
 336     @Override
 337     public void onCreate() {
 338         super.onCreate();
 339         Log.d("QuickDic", "Application: onCreate");
 340         TransliteratorManager.init(null, threadBackground);
 341         staticInit(getApplicationContext());
 342
 343         languageButtonPixels = (int) TypedValue.applyDimension(
 344                                    TypedValue.COMPLEX_UNIT_DIP, 60, getResources().getDisplayMetrics());
 345
 346         // Load the dictionaries we know about.
 347         dictionaryConfig = PersistentObjectCache.init(getApplicationContext()).read(
 348                                C.DICTIONARY_CONFIGS, DictionaryConfig.class);
 349         if (dictionaryConfig == null) {
 350             dictionaryConfig = new DictionaryConfig();
 351         }
 352         if (!dictionaryConfig.isValid()) {
 353             dictionaryConfig = new DictionaryConfig();
 354         }
 355
 356         // Theme stuff.
 357         setTheme(getSelectedTheme().themeId);
 358         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 359         prefs.registerOnSharedPreferenceChangeListener(new OnSharedPreferenceChangeListener() {
 360             @Override
 361             public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
 362                                                   String key) {
 363                 Log.d("QuickDic", "prefs changed: " + key);
 364                 if (key.equals(getString(R.string.themeKey))) {
 365                     setTheme(getSelectedTheme().themeId);
 366                 }
 367             }
 368         });
 369     }
 370
 371     public void onCreateGlobalOptionsMenu(
 372         final Context context, final Menu menu) {
 373         final MenuItem about = menu.add(getString(R.string.about));
 374         MenuItemCompat.setShowAsAction(about, MenuItem.SHOW_AS_ACTION_NEVER);
 375         about.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 376             public boolean onMenuItemClick(final MenuItem menuItem) {
 377                 final Intent intent = new Intent(getApplicationContext(), AboutActivity.class);
 378                 context.startActivity(intent);
 379                 return false;
 380             }
 381         });
 382
 383         final MenuItem help = menu.add(getString(R.string.help));
 384         MenuItemCompat.setShowAsAction(help, MenuItem.SHOW_AS_ACTION_NEVER);
 385         help.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 386             public boolean onMenuItemClick(final MenuItem menuItem) {
 387                 context.startActivity(HtmlDisplayActivity.getHelpLaunchIntent(getApplicationContext()));
 388                 return false;
 389             }
 390         });
 391
 392         final MenuItem preferences = menu.add(getString(R.string.settings));
 393         MenuItemCompat.setShowAsAction(preferences, MenuItem.SHOW_AS_ACTION_NEVER);
 394         preferences.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 395             public boolean onMenuItemClick(final MenuItem menuItem) {
 396                 PreferenceActivity.prefsMightHaveChanged = true;
 397                 final Intent intent = new Intent(getApplicationContext(), PreferenceActivity.class);
 398                 context.startActivity(intent);
 399                 return false;
 400             }
 401         });
 402
 403         final MenuItem reportIssue = menu.add(getString(R.string.reportIssue));
 404         MenuItemCompat.setShowAsAction(reportIssue, MenuItem.SHOW_AS_ACTION_NEVER);
 405         reportIssue.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 406             public boolean onMenuItemClick(final MenuItem menuItem) {
 407                 final Intent intent = new Intent(Intent.ACTION_VIEW);
 408                 intent.setData(Uri
 409                                .parse("http://github.com/rdoeffinger/Dictionary/issues"));
 410                 context.startActivity(intent);
 411                 return false;
 412             }
 413         });
 414     }
 415
 416     private String selectDefaultDir() {
 417         final File defaultDictDir = new File(Environment.getExternalStorageDirectory(), "quickDic");
 418         String dir = defaultDictDir.getAbsolutePath();
 419         File dictDir = new File(dir);
 420         String[] fileList = dictDir.isDirectory() ? dictDir.list() : null;
 421         if (fileList != null && fileList.length > 0) {
 422             return dir;
 423         }
 424         File efd = null;
 425         try {
 426             efd = getApplicationContext().getExternalFilesDir(null);
 427         } catch (Exception e) {
 428         }
 429         if (efd != null) {
 430             efd.mkdirs();
 431             if (!dictDir.isDirectory() && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
 432                 getApplicationContext().getExternalFilesDirs(null);
 433             }
 434             if (efd.isDirectory() && efd.canWrite() && checkFileCreate(efd)) {
 435                 return efd.getAbsolutePath();
 436             }
 437         }
 438         if (!dictDir.isDirectory() && !dictDir.mkdirs()) {
 439             return getApplicationContext().getFilesDir().getAbsolutePath();
 440         }
 441         return dir;
 442     }
 443
 444     public synchronized File getDictDir() {
 445         // This metaphor doesn't work, because we've already reset
 446         // prefsMightHaveChanged.
 447         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 448         String dir = prefs.getString(getString(R.string.quickdicDirectoryKey), "");
 449         if (dir.isEmpty()) {
 450             dir = selectDefaultDir();
 451         }
 452         dictDir = new File(dir);
 453         dictDir.mkdirs();
 454         if (!dictDir.isDirectory() && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
 455             getApplicationContext().getExternalFilesDirs(null);
 456         }
 457         return dictDir;
 458     }
 459
 460     static public boolean checkFileCreate(File dir) {
 461         boolean res = false;
 462         File testfile = new File(dir, "quickdic_writetest");
 463         try {
 464             testfile.delete();
 465             res = testfile.createNewFile() & testfile.delete();
 466         } catch (Exception e) {
 467         }
 468         return res;
 469     }
 470
 471     public File getWordListFile() {
 472         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 473         String file = prefs.getString(getString(R.string.wordListFileKey), "");
 474         if (file.isEmpty()) {
 475             return new File(getDictDir(), "wordList.txt");
 476         }
 477         return new File(file);
 478     }
 479
 480     public Theme getSelectedTheme() {
 481         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 482         final String theme = prefs.getString(getString(R.string.themeKey), "themeLight");
 483         if (theme.equals("themeLight")) {
 484             return Theme.LIGHT;
 485         } else {
 486             return Theme.DEFAULT;
 487         }
 488     }
 489
 490     public File getPath(String uncompressedFilename) {
 491         return new File(getDictDir(), uncompressedFilename);
 492     }
 493
 494     String defaultLangISO2 = Locale.getDefault().getLanguage().toLowerCase();
 495     String defaultLangName = null;
 496     final Map<String, String> fileToNameCache = new HashMap<String, String>();
 497
 498     public String isoCodeToLocalizedLanguageName(final String isoCode) {
 499         String lang = new Locale(isoCode).getDisplayLanguage();
 500         if (!lang.equals("") && !lang.equals(isoCode))
 501         {
 502             return lang;
 503         }
 504         final Language.LanguageResources languageResources = isoCodeToResources
 505                 .get(isoCode);
 506         if (languageResources != null)
 507         {
 508             lang = getApplicationContext().getString(languageResources.nameId);
 509         }
 510         return lang;
 511     }
 512
 513     public List<IndexInfo> sortedIndexInfos(List<IndexInfo> indexInfos) {
 514         // Hack to put the default locale first in the name.
 515         if (indexInfos.size() > 1 &&
 516                 indexInfos.get(1).shortName.toLowerCase().equals(defaultLangISO2)) {
 517             List<IndexInfo> result = new ArrayList<DictionaryInfo.IndexInfo>(indexInfos);
 518             ListUtil.swap(result, 0, 1);
 519             return result;
 520         }
 521         return indexInfos;
 522     }
 523
 524     public synchronized String getDictionaryName(final String uncompressedFilename) {
 525         final String currentLocale = Locale.getDefault().getLanguage().toLowerCase();
 526         if (!currentLocale.equals(defaultLangISO2)) {
 527             defaultLangISO2 = currentLocale;
 528             fileToNameCache.clear();
 529             defaultLangName = null;
 530         }
 531         if (defaultLangName == null) {
 532             defaultLangName = isoCodeToLocalizedLanguageName(defaultLangISO2);
 533         }
 534
 535         String name = fileToNameCache.get(uncompressedFilename);
 536         if (name != null) {
 537             return name;
 538         }
 539
 540         final DictionaryInfo dictionaryInfo = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 541                                               .get(uncompressedFilename);
 542         if (dictionaryInfo != null) {
 543             final StringBuilder nameBuilder = new StringBuilder();
 544
 545             List<IndexInfo> sortedIndexInfos = sortedIndexInfos(dictionaryInfo.indexInfos);
 546             for (int i = 0; i < sortedIndexInfos.size(); ++i) {
 547                 if (i > 0) {
 548                     nameBuilder.append("-");
 549                 }
 550                 nameBuilder
 551                 .append(isoCodeToLocalizedLanguageName(sortedIndexInfos.get(i).shortName));
 552             }
 553             name = nameBuilder.toString();
 554         } else {
 555             name = uncompressedFilename.replace(".quickdic", "");
 556         }
 557         fileToNameCache.put(uncompressedFilename, name);
 558         return name;
 559     }
 560
 561     public View createButton(final Context context, final DictionaryInfo dictionaryInfo,
 562                              final IndexInfo indexInfo) {
 563         LanguageResources languageResources = isoCodeToResources.get(indexInfo.shortName);
 564         View result;
 565
 566         if (languageResources == null || languageResources.flagId <= 0) {
 567             Button button = new Button(context);
 568             button.setText(indexInfo.shortName);
 569             result = button;
 570         } else {
 571             ImageButton button = new ImageButton(context);
 572             button.setImageResource(languageResources.flagId);
 573             button.setScaleType(ScaleType.FIT_CENTER);
 574             result = button;
 575         }
 576         result.setLayoutParams(new LinearLayout.LayoutParams(languageButtonPixels, languageButtonPixels * 2 / 3));
 577         return result;
 578     }
 579
 580     public synchronized void moveDictionaryToTop(final DictionaryInfo dictionaryInfo) {
 581         dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename);
 582         dictionaryConfig.dictionaryFilesOrdered.add(0, dictionaryInfo.uncompressedFilename);
 583         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 584     }
 585
 586     public synchronized void sortDictionaries() {
 587         Collections.sort(dictionaryConfig.dictionaryFilesOrdered, uncompressedFilenameComparator);
 588         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 589     }
 590
 591     public synchronized void deleteDictionary(final DictionaryInfo dictionaryInfo) {
 592         while (dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename)) {
 593         }
 594         dictionaryConfig.uncompressedFilenameToDictionaryInfo
 595         .remove(dictionaryInfo.uncompressedFilename);
 596         getPath(dictionaryInfo.uncompressedFilename).delete();
 597         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 598     }
 599
 600     final Comparator collator = USE_COLLATOR ? Collator.getInstance() : String.CASE_INSENSITIVE_ORDER;
 601     final Comparator<String> uncompressedFilenameComparator = new Comparator<String>() {
 602         @Override
 603         public int compare(String uncompressedFilename1, String uncompressedFilename2) {
 604             final String name1 = getDictionaryName(uncompressedFilename1);
 605             final String name2 = getDictionaryName(uncompressedFilename2);
 606             if (defaultLangName.length() > 0) {
 607                 if (name1.startsWith(defaultLangName + "-")
 608                         && !name2.startsWith(defaultLangName + "-")) {
 609                     return -1;
 610                 } else if (name2.startsWith(defaultLangName + "-")
 611                            && !name1.startsWith(defaultLangName + "-")) {
 612                     return 1;
 613                 }
 614             }
 615             return collator.compare(name1, name2);
 616         }
 617     };
 618     final Comparator<DictionaryInfo> dictionaryInfoComparator = new Comparator<DictionaryInfo>() {
 619         @Override
 620         public int compare(DictionaryInfo d1, DictionaryInfo d2) {
 621             // Single-index dictionaries first.
 622             if (d1.indexInfos.size() != d2.indexInfos.size()) {
 623                 return d1.indexInfos.size() - d2.indexInfos.size();
 624             }
 625             return uncompressedFilenameComparator.compare(d1.uncompressedFilename,
 626                     d2.uncompressedFilename);
 627         }
 628     };
 629
 630     public void backgroundUpdateDictionaries(final Runnable onUpdateFinished) {
 631         new Thread(new Runnable() {
 632             @Override
 633             public void run() {
 634                 final DictionaryConfig oldDictionaryConfig = new DictionaryConfig();
 635                 synchronized (DictionaryApplication.this) {
 636                     oldDictionaryConfig.dictionaryFilesOrdered
 637                     .addAll(dictionaryConfig.dictionaryFilesOrdered);
 638                 }
 639                 final DictionaryConfig newDictionaryConfig = new DictionaryConfig();
 640                 for (final String uncompressedFilename : oldDictionaryConfig.dictionaryFilesOrdered) {
 641                     final File dictFile = getPath(uncompressedFilename);
 642                     final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(dictFile);
 643                     if (dictionaryInfo.isValid() || dictFile.exists()) {
 644                         newDictionaryConfig.dictionaryFilesOrdered.add(uncompressedFilename);
 645                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 646                             uncompressedFilename, dictionaryInfo);
 647                     }
 648                 }
 649
 650                 // Are there dictionaries on the device that we didn't know
 651                 // about already?
 652                 // Pick them up and put them at the end of the list.
 653                 final List<String> toAddSorted = new ArrayList<String>();
 654                 final File[] dictDirFiles = getDictDir().listFiles();
 655                 if (dictDirFiles != null) {
 656                     for (final File file : dictDirFiles) {
 657                         if (file.getName().endsWith(".zip")) {
 658                             if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 659                                     .containsKey(file.getName().replace(".zip", ""))) {
 660                                 file.delete();
 661                             }
 662                         }
 663                         if (!file.getName().endsWith(".quickdic")) {
 664                             continue;
 665                         }
 666                         if (newDictionaryConfig.uncompressedFilenameToDictionaryInfo
 667                                 .containsKey(file.getName())) {
 668                             // We have it in our list already.
 669                             continue;
 670                         }
 671                         final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(file);
 672                         if (!dictionaryInfo.isValid()) {
 673                             Log.e(LOG, "Unable to parse dictionary: " + file.getPath());
 674                         }
 675
 676                         toAddSorted.add(file.getName());
 677                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 678                             file.getName(), dictionaryInfo);
 679                     }
 680                 } else {
 681                     Log.w(LOG, "dictDir is not a directory: " + getDictDir().getPath());
 682                 }
 683                 if (!toAddSorted.isEmpty()) {
 684                     Collections.sort(toAddSorted, uncompressedFilenameComparator);
 685                     newDictionaryConfig.dictionaryFilesOrdered.addAll(toAddSorted);
 686                 }
 687
 688                 try {
 689                     PersistentObjectCache.getInstance()
 690                     .write(C.DICTIONARY_CONFIGS, newDictionaryConfig);
 691                 } catch (Exception e) {
 692                     Log.e(LOG, "Failed persisting dictionary configs", e);
 693                 }
 694
 695                 synchronized (DictionaryApplication.this) {
 696                     dictionaryConfig = newDictionaryConfig;
 697                 }
 698
 699                 try {
 700                     onUpdateFinished.run();
 701                 } catch (Exception e) {
 702                     Log.e(LOG, "Exception running callback.", e);
 703                 }
 704             }
 705         }).start();
 706     }
 707
 708     public boolean matchesFilters(final DictionaryInfo dictionaryInfo, final String[] filters) {
 709         if (filters == null) {
 710             return true;
 711         }
 712         for (final String filter : filters) {
 713             if (!getDictionaryName(dictionaryInfo.uncompressedFilename).toLowerCase().contains(
 714                         filter)) {
 715                 return false;
 716             }
 717         }
 718         return true;
 719     }
 720
 721     public synchronized List<DictionaryInfo> getDictionariesOnDevice(String[] filters) {
 722         final List<DictionaryInfo> result = new ArrayList<DictionaryInfo>(
 723             dictionaryConfig.dictionaryFilesOrdered.size());
 724         for (final String uncompressedFilename : dictionaryConfig.dictionaryFilesOrdered) {
 725             final DictionaryInfo dictionaryInfo = dictionaryConfig.uncompressedFilenameToDictionaryInfo
 726                                                   .get(uncompressedFilename);
 727             if (dictionaryInfo != null && matchesFilters(dictionaryInfo, filters)) {
 728                 result.add(dictionaryInfo);
 729             }
 730         }
 731         return result;
 732     }
 733
 734     public List<DictionaryInfo> getDownloadableDictionaries(String[] filters) {
 735         final List<DictionaryInfo> result = new ArrayList<DictionaryInfo>(
 736             dictionaryConfig.dictionaryFilesOrdered.size());
 737
 738         final Map<String, DictionaryInfo> remaining = new HashMap<String, DictionaryInfo>(
 739             DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO);
 740         remaining.keySet().removeAll(dictionaryConfig.dictionaryFilesOrdered);
 741         for (final DictionaryInfo dictionaryInfo : remaining.values()) {
 742             if (matchesFilters(dictionaryInfo, filters)) {
 743                 result.add(dictionaryInfo);
 744             }
 745         }
 746         Collections.sort(result, dictionaryInfoComparator);
 747         return result;
 748     }
 749
 750     public synchronized boolean isDictionaryOnDevice(String uncompressedFilename) {
 751         return dictionaryConfig.uncompressedFilenameToDictionaryInfo.get(uncompressedFilename) != null;
 752     }
 753
 754     public boolean updateAvailable(final DictionaryInfo dictionaryInfo) {
 755         final DictionaryInfo downloadable =
 756             DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.get(
 757                 dictionaryInfo.uncompressedFilename);
 758         return downloadable != null &&
 759                downloadable.creationMillis > dictionaryInfo.creationMillis;
 760     }
 761
 762     public DictionaryInfo getDownloadable(final String uncompressedFilename) {
 763         final DictionaryInfo downloadable = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 764                                             .get(uncompressedFilename);
 765         return downloadable;
 766     }
 767
 768 }