src/com/hughes/android/dictionary/DictionaryApplication.java

   1 // Copyright 2011 Google Inc. All Rights Reserved.
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 package com.hughes.android.dictionary;
  16
  17 import android.app.Application;
  18 import android.content.Context;
  19 import android.content.Intent;
  20 import android.content.SharedPreferences;
  21 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
  22 import android.net.Uri;
  23 import android.os.Environment;
  24 import android.preference.PreferenceManager;
  25 import android.util.Log;
  26 import android.util.TypedValue;
  27 import android.view.View;
  28 import android.widget.Button;
  29 import android.widget.ImageButton;
  30 import android.widget.ImageView.ScaleType;
  31
  32 import com.actionbarsherlock.view.Menu;
  33 import com.actionbarsherlock.view.MenuItem;
  34 import com.actionbarsherlock.view.MenuItem.OnMenuItemClickListener;
  35 import com.hughes.android.dictionary.DictionaryInfo.IndexInfo;
  36 import com.hughes.android.dictionary.engine.Dictionary;
  37 import com.hughes.android.dictionary.engine.Language;
  38 import com.hughes.android.dictionary.engine.Language.LanguageResources;
  39 import com.hughes.android.dictionary.engine.TransliteratorManager;
  40 import com.hughes.android.util.PersistentObjectCache;
  41 import com.hughes.util.ListUtil;
  42 import com.ibm.icu.text.Collator;
  43
  44 import java.io.BufferedReader;
  45 import java.io.File;
  46 import java.io.IOException;
  47 import java.io.InputStreamReader;
  48 import java.io.Serializable;
  49 import java.util.ArrayList;
  50 import java.util.Collections;
  51 import java.util.Comparator;
  52 import java.util.LinkedHashMap;
  53 import java.util.List;
  54 import java.util.Locale;
  55 import java.util.Map;
  56
  57 public class DictionaryApplication extends Application {
  58
  59     static final String LOG = "QuickDicApp";
  60
  61     // Static, determined by resources (and locale).
  62     // Unordered.
  63     static Map<String, DictionaryInfo> DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO = null;
  64
  65     static final class DictionaryConfig implements Serializable {
  66         private static final long serialVersionUID = -1444177164708201263L;
  67         // User-ordered list, persisted, just the ones that are/have been
  68         // present.
  69         final List<String> dictionaryFilesOrdered = new ArrayList<String>();
  70
  71         final Map<String, DictionaryInfo> uncompressedFilenameToDictionaryInfo = new LinkedHashMap<String, DictionaryInfo>();
  72
  73         /**
  74          * Sometimes a deserialized version of this data structure isn't valid.
  75          * @return
  76          */
  77         boolean isValid() {
  78             return uncompressedFilenameToDictionaryInfo != null && dictionaryFilesOrdered != null;
  79         }
  80     }
  81
  82     DictionaryConfig dictionaryConfig = null;
  83
  84     int languageButtonPixels = -1;
  85
  86     static synchronized void staticInit(final Context context) {
  87         if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO != null) {
  88             return;
  89         }
  90         DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO = new LinkedHashMap<String, DictionaryInfo>();
  91         final BufferedReader reader = new BufferedReader(
  92                 new InputStreamReader(context.getResources().openRawResource(R.raw.dictionary_info)));
  93         try {
  94             String line;
  95             while ((line = reader.readLine()) != null) {
  96                 if (line.startsWith("#") || line.length() == 0) {
  97                     continue;
  98                 }
  99                 final DictionaryInfo dictionaryInfo = new DictionaryInfo(line);
 100                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.put(
 101                         dictionaryInfo.uncompressedFilename, dictionaryInfo);
 102             }
 103             reader.close();
 104         } catch (IOException e) {
 105             Log.e(LOG, "Failed to load downloadable dictionary lists.", e);
 106         }
 107     }
 108
 109     private File dictDir;
 110
 111     @Override
 112     public void onCreate() {
 113         super.onCreate();
 114         Log.d("QuickDic", "Application: onCreate");
 115         TransliteratorManager.init(null);
 116         staticInit(getApplicationContext());
 117
 118         languageButtonPixels = (int) TypedValue.applyDimension(
 119                 TypedValue.COMPLEX_UNIT_DIP, 60, getResources().getDisplayMetrics());
 120
 121         // Load the dictionaries we know about.
 122         dictionaryConfig = PersistentObjectCache.init(getApplicationContext()).read(
 123                 C.DICTIONARY_CONFIGS, DictionaryConfig.class);
 124         if (dictionaryConfig == null) {
 125             dictionaryConfig = new DictionaryConfig();
 126         }
 127         if (!dictionaryConfig.isValid()) {
 128             dictionaryConfig = new DictionaryConfig();
 129         }
 130
 131         // Theme stuff.
 132         setTheme(getSelectedTheme().themeId);
 133         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 134         prefs.registerOnSharedPreferenceChangeListener(new OnSharedPreferenceChangeListener() {
 135             @Override
 136             public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
 137                     String key) {
 138                 Log.d("QuickDic", "prefs changed: " + key);
 139                 if (key.equals(getString(R.string.themeKey))) {
 140                     setTheme(getSelectedTheme().themeId);
 141                 }
 142             }
 143         });
 144     }
 145
 146     public void onCreateGlobalOptionsMenu(
 147             final Context context, final Menu menu) {
 148         final MenuItem about = menu.add(getString(R.string.about));
 149         about.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
 150         about.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 151             public boolean onMenuItemClick(final MenuItem menuItem) {
 152                 final Intent intent = new Intent().setClassName(AboutActivity.class
 153                         .getPackage().getName(), AboutActivity.class.getCanonicalName());
 154                 context.startActivity(intent);
 155                 return false;
 156             }
 157         });
 158
 159         final MenuItem help = menu.add(getString(R.string.help));
 160         help.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
 161         help.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 162             public boolean onMenuItemClick(final MenuItem menuItem) {
 163                 context.startActivity(HtmlDisplayActivity.getHelpLaunchIntent());
 164                 return false;
 165             }
 166         });
 167
 168         final MenuItem preferences = menu.add(getString(R.string.settings));
 169         preferences.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
 170         preferences.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 171             public boolean onMenuItemClick(final MenuItem menuItem) {
 172                 PreferenceActivity.prefsMightHaveChanged = true;
 173                 final Intent intent = new Intent().setClassName(PreferenceActivity.class
 174                         .getPackage().getName(), PreferenceActivity.class.getCanonicalName());
 175                 context.startActivity(intent);
 176                 return false;
 177             }
 178         });
 179
 180         final MenuItem reportIssue = menu.add(getString(R.string.reportIssue));
 181         reportIssue.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
 182         reportIssue.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 183             public boolean onMenuItemClick(final MenuItem menuItem) {
 184                 final Intent intent = new Intent(Intent.ACTION_VIEW);
 185                 intent.setData(Uri
 186                         .parse("http://code.google.com/p/quickdic-dictionary/issues/entry"));
 187                 context.startActivity(intent);
 188                 return false;
 189             }
 190         });
 191     }
 192
 193     public synchronized File getDictDir() {
 194         // This metaphor doesn't work, because we've already reset
 195         // prefsMightHaveChanged.
 196         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 197         String dir = prefs.getString(getString(R.string.quickdicDirectoryKey), "");
 198         if (dir.isEmpty()) {
 199             final File defaultDictDir = new File(Environment.getExternalStorageDirectory(), "quickDic");
 200             dir = defaultDictDir.getAbsolutePath();
 201         }
 202         dictDir = new File(dir);
 203         dictDir.mkdirs();
 204         return dictDir;
 205     }
 206
 207     public File getWordListFile() {
 208         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 209         String file = prefs.getString(getString(R.string.wordListFileKey), "");
 210         if (file.isEmpty()) {
 211             return new File(getDictDir(), "wordList.txt");
 212         }
 213         return new File(file);
 214     }
 215
 216     public C.Theme getSelectedTheme() {
 217         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 218         final String theme = prefs.getString(getString(R.string.themeKey), "themeLight");
 219         if (theme.equals("themeLight")) {
 220             return C.Theme.LIGHT;
 221         } else {
 222             return C.Theme.DEFAULT;
 223         }
 224     }
 225
 226     public File getPath(String uncompressedFilename) {
 227         return new File(getDictDir(), uncompressedFilename);
 228     }
 229
 230     String defaultLangISO2 = Locale.getDefault().getLanguage().toLowerCase();
 231     String defaultLangName = null;
 232     final Map<String, String> fileToNameCache = new LinkedHashMap<String, String>();
 233
 234     public String isoCodeToLocalizedLanguageName(final String isoCode) {
 235         final Language.LanguageResources languageResources = Language.isoCodeToResources
 236                 .get(isoCode);
 237         final String lang = languageResources != null ? getApplicationContext().getString(
 238                 languageResources.nameId) : isoCode;
 239         return lang;
 240     }
 241
 242     public List<IndexInfo> sortedIndexInfos(List<IndexInfo> indexInfos) {
 243         // Hack to put the default locale first in the name.
 244         if (indexInfos.size() > 1 &&
 245                 indexInfos.get(1).shortName.toLowerCase().equals(defaultLangISO2)) {
 246             List<IndexInfo> result = new ArrayList<DictionaryInfo.IndexInfo>(indexInfos);
 247             ListUtil.swap(result, 0, 1);
 248             return result;
 249         }
 250         return indexInfos;
 251     }
 252
 253     public synchronized String getDictionaryName(final String uncompressedFilename) {
 254         final String currentLocale = Locale.getDefault().getLanguage().toLowerCase();
 255         if (!currentLocale.equals(defaultLangISO2)) {
 256             defaultLangISO2 = currentLocale;
 257             fileToNameCache.clear();
 258             defaultLangName = null;
 259         }
 260         if (defaultLangName == null) {
 261             defaultLangName = isoCodeToLocalizedLanguageName(defaultLangISO2);
 262         }
 263
 264         String name = fileToNameCache.get(uncompressedFilename);
 265         if (name != null) {
 266             return name;
 267         }
 268
 269         final DictionaryInfo dictionaryInfo = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 270                 .get(uncompressedFilename);
 271         if (dictionaryInfo != null) {
 272             final StringBuilder nameBuilder = new StringBuilder();
 273
 274             List<IndexInfo> sortedIndexInfos = sortedIndexInfos(dictionaryInfo.indexInfos);
 275             for (int i = 0; i < sortedIndexInfos.size(); ++i) {
 276                 if (i > 0) {
 277                     nameBuilder.append("-");
 278                 }
 279                 nameBuilder
 280                         .append(isoCodeToLocalizedLanguageName(sortedIndexInfos.get(i).shortName));
 281             }
 282             name = nameBuilder.toString();
 283         } else {
 284             name = uncompressedFilename.replace(".quickdic", "");
 285         }
 286         fileToNameCache.put(uncompressedFilename, name);
 287         return name;
 288     }
 289
 290     public View createButton(final Context context, final DictionaryInfo dictionaryInfo,
 291             final IndexInfo indexInfo) {
 292         LanguageResources languageResources = Language.isoCodeToResources.get(indexInfo.shortName);
 293         View result;
 294
 295         if (languageResources == null || languageResources.flagId <= 0) {
 296             Button button = new Button(context);
 297             button.setText(indexInfo.shortName);
 298             result = button;
 299         } else {
 300             ImageButton button = new ImageButton(context);
 301             button.setImageResource(languageResources.flagId);
 302             button.setScaleType(ScaleType.FIT_CENTER);
 303             result = button;
 304         }
 305         result.setMinimumWidth(languageButtonPixels);
 306         result.setMinimumHeight(languageButtonPixels * 2 / 3);
 307         // result.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
 308         // LayoutParams.WRAP_CONTENT));
 309         return result;
 310     }
 311
 312     public synchronized void moveDictionaryToTop(final DictionaryInfo dictionaryInfo) {
 313         dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename);
 314         dictionaryConfig.dictionaryFilesOrdered.add(0, dictionaryInfo.uncompressedFilename);
 315         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 316     }
 317
 318     public synchronized void deleteDictionary(final DictionaryInfo dictionaryInfo) {
 319         while (dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename)) {
 320         }
 321         ;
 322         dictionaryConfig.uncompressedFilenameToDictionaryInfo
 323                 .remove(dictionaryInfo.uncompressedFilename);
 324         getPath(dictionaryInfo.uncompressedFilename).delete();
 325         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 326     }
 327
 328     final Collator collator = Collator.getInstance();
 329     final Comparator<String> uncompressedFilenameComparator = new Comparator<String>() {
 330         @Override
 331         public int compare(String uncompressedFilename1, String uncompressedFilename2) {
 332             final String name1 = getDictionaryName(uncompressedFilename1);
 333             final String name2 = getDictionaryName(uncompressedFilename2);
 334             if (defaultLangName.length() > 0) {
 335                 if (name1.startsWith(defaultLangName + "-")
 336                         && !name2.startsWith(defaultLangName + "-")) {
 337                     return -1;
 338                 } else if (name2.startsWith(defaultLangName + "-")
 339                         && !name1.startsWith(defaultLangName + "-")) {
 340                     return 1;
 341                 }
 342             }
 343             return collator.compare(name1, name2);
 344         }
 345     };
 346     final Comparator<DictionaryInfo> dictionaryInfoComparator = new Comparator<DictionaryInfo>() {
 347         @Override
 348         public int compare(DictionaryInfo d1, DictionaryInfo d2) {
 349             // Single-index dictionaries first.
 350             if (d1.indexInfos.size() != d2.indexInfos.size()) {
 351                 return d1.indexInfos.size() - d2.indexInfos.size();
 352             }
 353             return uncompressedFilenameComparator.compare(d1.uncompressedFilename,
 354                     d2.uncompressedFilename);
 355         }
 356     };
 357
 358     public void backgroundUpdateDictionaries(final Runnable onUpdateFinished) {
 359         new Thread(new Runnable() {
 360             @Override
 361             public void run() {
 362                 final DictionaryConfig oldDictionaryConfig = new DictionaryConfig();
 363                 synchronized (this) {
 364                     oldDictionaryConfig.dictionaryFilesOrdered
 365                             .addAll(dictionaryConfig.dictionaryFilesOrdered);
 366                 }
 367                 final DictionaryConfig newDictionaryConfig = new DictionaryConfig();
 368                 for (final String uncompressedFilename : oldDictionaryConfig.dictionaryFilesOrdered) {
 369                     final File dictFile = getPath(uncompressedFilename);
 370                     final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(dictFile);
 371                     if (dictionaryInfo != null) {
 372                         newDictionaryConfig.dictionaryFilesOrdered.add(uncompressedFilename);
 373                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 374                                 uncompressedFilename, dictionaryInfo);
 375                     }
 376                 }
 377
 378                 // Are there dictionaries on the device that we didn't know
 379                 // about already?
 380                 // Pick them up and put them at the end of the list.
 381                 final List<String> toAddSorted = new ArrayList<String>();
 382                 final File[] dictDirFiles = getDictDir().listFiles();
 383                 if (dictDirFiles != null) {
 384                     for (final File file : dictDirFiles) {
 385                         if (file.getName().endsWith(".zip")) {
 386                             if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 387                                     .containsKey(file.getName().replace(".zip", ""))) {
 388                                 file.delete();
 389                             }
 390                         }
 391                         if (!file.getName().endsWith(".quickdic")) {
 392                             continue;
 393                         }
 394                         if (newDictionaryConfig.uncompressedFilenameToDictionaryInfo
 395                                 .containsKey(file.getName())) {
 396                             // We have it in our list already.
 397                             continue;
 398                         }
 399                         final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(file);
 400                         if (dictionaryInfo == null) {
 401                             Log.e(LOG, "Unable to parse dictionary: " + file.getPath());
 402                             continue;
 403                         }
 404
 405                         toAddSorted.add(file.getName());
 406                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 407                                 file.getName(), dictionaryInfo);
 408                     }
 409                 } else {
 410                     Log.w(LOG, "dictDir is not a diretory: " + getDictDir().getPath());
 411                 }
 412                 if (!toAddSorted.isEmpty()) {
 413                     Collections.sort(toAddSorted, uncompressedFilenameComparator);
 414                     newDictionaryConfig.dictionaryFilesOrdered.addAll(toAddSorted);
 415                 }
 416
 417                 PersistentObjectCache.getInstance()
 418                         .write(C.DICTIONARY_CONFIGS, newDictionaryConfig);
 419                 synchronized (this) {
 420                     dictionaryConfig = newDictionaryConfig;
 421                 }
 422
 423                 try {
 424                     onUpdateFinished.run();
 425                 } catch (Exception e) {
 426                     Log.e(LOG, "Exception running callback.", e);
 427                 }
 428             }
 429         }).start();
 430     }
 431
 432     public boolean matchesFilters(final DictionaryInfo dictionaryInfo, final String[] filters) {
 433         if (filters == null) {
 434             return true;
 435         }
 436         for (final String filter : filters) {
 437             if (!getDictionaryName(dictionaryInfo.uncompressedFilename).toLowerCase().contains(
 438                     filter)) {
 439                 return false;
 440             }
 441         }
 442         return true;
 443     }
 444
 445     public synchronized List<DictionaryInfo> getDictionariesOnDevice(String[] filters) {
 446         final List<DictionaryInfo> result = new ArrayList<DictionaryInfo>(
 447                 dictionaryConfig.dictionaryFilesOrdered.size());
 448         for (final String uncompressedFilename : dictionaryConfig.dictionaryFilesOrdered) {
 449             final DictionaryInfo dictionaryInfo = dictionaryConfig.uncompressedFilenameToDictionaryInfo
 450                     .get(uncompressedFilename);
 451             if (dictionaryInfo != null && matchesFilters(dictionaryInfo, filters)) {
 452                 result.add(dictionaryInfo);
 453             }
 454         }
 455         return result;
 456     }
 457
 458     public List<DictionaryInfo> getDownloadableDictionaries(String[] filters) {
 459         final List<DictionaryInfo> result = new ArrayList<DictionaryInfo>(
 460                 dictionaryConfig.dictionaryFilesOrdered.size());
 461
 462         final Map<String, DictionaryInfo> remaining = new LinkedHashMap<String, DictionaryInfo>(
 463                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO);
 464         remaining.keySet().removeAll(dictionaryConfig.dictionaryFilesOrdered);
 465         for (final DictionaryInfo dictionaryInfo : remaining.values()) {
 466             if (matchesFilters(dictionaryInfo, filters)) {
 467                 result.add(dictionaryInfo);
 468             }
 469         }
 470         Collections.sort(result, dictionaryInfoComparator);
 471         return result;
 472     }
 473
 474     public synchronized boolean isDictionaryOnDevice(String uncompressedFilename) {
 475         return dictionaryConfig.uncompressedFilenameToDictionaryInfo.get(uncompressedFilename) != null;
 476     }
 477
 478     public boolean updateAvailable(final DictionaryInfo dictionaryInfo) {
 479         final DictionaryInfo downloadable =
 480                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.get(
 481                         dictionaryInfo.uncompressedFilename);
 482         return downloadable != null &&
 483                 downloadable.creationMillis > dictionaryInfo.creationMillis;
 484     }
 485
 486     public DictionaryInfo getDownloadable(final String uncompressedFilename) {
 487         final DictionaryInfo downloadable = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 488                 .get(uncompressedFilename);
 489         return downloadable;
 490     }
 491
 492 }