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 datastructure 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         // if (dictDir == null || PreferenceActivity.prefsMightHaveChanged) {
 197         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 198         final File defaultDictDir = new File(Environment.getExternalStorageDirectory(), "quickDic");
 199         String dir = prefs.getString(getString(R.string.quickdicDirectoryKey),
 200                 defaultDictDir.getAbsolutePath());
 201         if (dir.isEmpty()) {
 202             dir = defaultDictDir.getAbsolutePath();
 203         }
 204         dictDir = new File(dir);
 205         dictDir.mkdirs();
 206         return dictDir;
 207     }
 208
 209     public C.Theme getSelectedTheme() {
 210         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 211         final String theme = prefs.getString(getString(R.string.themeKey), "themeLight");
 212         if (theme.equals("themeLight")) {
 213             return C.Theme.LIGHT;
 214         } else {
 215             return C.Theme.DEFAULT;
 216         }
 217     }
 218
 219     public File getPath(String uncompressedFilename) {
 220         return new File(getDictDir(), uncompressedFilename);
 221     }
 222
 223     String defaultLangISO2 = Locale.getDefault().getLanguage().toLowerCase();
 224     String defaultLangName = null;
 225     final Map<String, String> fileToNameCache = new LinkedHashMap<String, String>();
 226
 227     public String isoCodeToLocalizedLanguageName(final String isoCode) {
 228         final Language.LanguageResources languageResources = Language.isoCodeToResources
 229                 .get(isoCode);
 230         final String lang = languageResources != null ? getApplicationContext().getString(
 231                 languageResources.nameId) : isoCode;
 232         return lang;
 233     }
 234
 235     public List<IndexInfo> sortedIndexInfos(List<IndexInfo> indexInfos) {
 236         // Hack to put the default locale first in the name.
 237         if (indexInfos.size() > 1 &&
 238                 indexInfos.get(1).shortName.toLowerCase().equals(defaultLangISO2)) {
 239             List<IndexInfo> result = new ArrayList<DictionaryInfo.IndexInfo>(indexInfos);
 240             ListUtil.swap(result, 0, 1);
 241             return result;
 242         }
 243         return indexInfos;
 244     }
 245
 246     public synchronized String getDictionaryName(final String uncompressedFilename) {
 247         final String currentLocale = Locale.getDefault().getLanguage().toLowerCase();
 248         if (!currentLocale.equals(defaultLangISO2)) {
 249             defaultLangISO2 = currentLocale;
 250             fileToNameCache.clear();
 251             defaultLangName = null;
 252         }
 253         if (defaultLangName == null) {
 254             defaultLangName = isoCodeToLocalizedLanguageName(defaultLangISO2);
 255         }
 256
 257         String name = fileToNameCache.get(uncompressedFilename);
 258         if (name != null) {
 259             return name;
 260         }
 261
 262         final DictionaryInfo dictionaryInfo = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 263                 .get(uncompressedFilename);
 264         if (dictionaryInfo != null) {
 265             final StringBuilder nameBuilder = new StringBuilder();
 266
 267             List<IndexInfo> sortedIndexInfos = sortedIndexInfos(dictionaryInfo.indexInfos);
 268             for (int i = 0; i < sortedIndexInfos.size(); ++i) {
 269                 if (i > 0) {
 270                     nameBuilder.append("-");
 271                 }
 272                 nameBuilder
 273                         .append(isoCodeToLocalizedLanguageName(sortedIndexInfos.get(i).shortName));
 274             }
 275             name = nameBuilder.toString();
 276         } else {
 277             name = uncompressedFilename.replace(".quickdic", "");
 278         }
 279         fileToNameCache.put(uncompressedFilename, name);
 280         return name;
 281     }
 282
 283     public View createButton(final Context context, final DictionaryInfo dictionaryInfo,
 284             final IndexInfo indexInfo) {
 285         LanguageResources languageResources = Language.isoCodeToResources.get(indexInfo.shortName);
 286         View result;
 287
 288         if (languageResources == null || languageResources.flagId <= 0) {
 289             Button button = new Button(context);
 290             button.setText(indexInfo.shortName);
 291             result = button;
 292         } else {
 293             ImageButton button = new ImageButton(context);
 294             button.setImageResource(languageResources.flagId);
 295             button.setScaleType(ScaleType.FIT_CENTER);
 296             result = button;
 297         }
 298         result.setMinimumWidth(languageButtonPixels);
 299         result.setMinimumHeight(languageButtonPixels * 2 / 3);
 300         // result.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
 301         // LayoutParams.WRAP_CONTENT));
 302         return result;
 303     }
 304
 305     public synchronized void moveDictionaryToTop(final DictionaryInfo dictionaryInfo) {
 306         dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename);
 307         dictionaryConfig.dictionaryFilesOrdered.add(0, dictionaryInfo.uncompressedFilename);
 308         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 309     }
 310
 311     public synchronized void deleteDictionary(final DictionaryInfo dictionaryInfo) {
 312         while (dictionaryConfig.dictionaryFilesOrdered.remove(dictionaryInfo.uncompressedFilename)) {
 313         }
 314         ;
 315         dictionaryConfig.uncompressedFilenameToDictionaryInfo
 316                 .remove(dictionaryInfo.uncompressedFilename);
 317         getPath(dictionaryInfo.uncompressedFilename).delete();
 318         PersistentObjectCache.getInstance().write(C.DICTIONARY_CONFIGS, dictionaryConfig);
 319     }
 320
 321     final Collator collator = Collator.getInstance();
 322     final Comparator<String> uncompressedFilenameComparator = new Comparator<String>() {
 323         @Override
 324         public int compare(String uncompressedFilename1, String uncompressedFilename2) {
 325             final String name1 = getDictionaryName(uncompressedFilename1);
 326             final String name2 = getDictionaryName(uncompressedFilename2);
 327             if (defaultLangName.length() > 0) {
 328                 if (name1.startsWith(defaultLangName + "-")
 329                         && !name2.startsWith(defaultLangName + "-")) {
 330                     return -1;
 331                 } else if (name2.startsWith(defaultLangName + "-")
 332                         && !name1.startsWith(defaultLangName + "-")) {
 333                     return 1;
 334                 }
 335             }
 336             return collator.compare(name1, name2);
 337         }
 338     };
 339     final Comparator<DictionaryInfo> dictionaryInfoComparator = new Comparator<DictionaryInfo>() {
 340         @Override
 341         public int compare(DictionaryInfo d1, DictionaryInfo d2) {
 342             // Single-index dictionaries first.
 343             if (d1.indexInfos.size() != d2.indexInfos.size()) {
 344                 return d1.indexInfos.size() - d2.indexInfos.size();
 345             }
 346             return uncompressedFilenameComparator.compare(d1.uncompressedFilename,
 347                     d2.uncompressedFilename);
 348         }
 349     };
 350
 351     public void backgroundUpdateDictionaries(final Runnable onUpdateFinished) {
 352         new Thread(new Runnable() {
 353             @Override
 354             public void run() {
 355                 final DictionaryConfig oldDictionaryConfig = new DictionaryConfig();
 356                 synchronized (this) {
 357                     oldDictionaryConfig.dictionaryFilesOrdered
 358                             .addAll(dictionaryConfig.dictionaryFilesOrdered);
 359                 }
 360                 final DictionaryConfig newDictionaryConfig = new DictionaryConfig();
 361                 for (final String uncompressedFilename : oldDictionaryConfig.dictionaryFilesOrdered) {
 362                     final File dictFile = getPath(uncompressedFilename);
 363                     final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(dictFile);
 364                     if (dictionaryInfo != null) {
 365                         newDictionaryConfig.dictionaryFilesOrdered.add(uncompressedFilename);
 366                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 367                                 uncompressedFilename, dictionaryInfo);
 368                     }
 369                 }
 370
 371                 // Are there dictionaries on the device that we didn't know
 372                 // about already?
 373                 // Pick them up and put them at the end of the list.
 374                 final List<String> toAddSorted = new ArrayList<String>();
 375                 final File[] dictDirFiles = getDictDir().listFiles();
 376                 if (dictDirFiles != null) {
 377                     for (final File file : dictDirFiles) {
 378                         if (file.getName().endsWith(".zip")) {
 379                             if (DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 380                                     .containsKey(file.getName().replace(".zip", ""))) {
 381                                 file.delete();
 382                             }
 383                         }
 384                         if (!file.getName().endsWith(".quickdic")) {
 385                             continue;
 386                         }
 387                         if (newDictionaryConfig.uncompressedFilenameToDictionaryInfo
 388                                 .containsKey(file.getName())) {
 389                             // We have it in our list already.
 390                             continue;
 391                         }
 392                         final DictionaryInfo dictionaryInfo = Dictionary.getDictionaryInfo(file);
 393                         if (dictionaryInfo == null) {
 394                             Log.e(LOG, "Unable to parse dictionary: " + file.getPath());
 395                             continue;
 396                         }
 397
 398                         toAddSorted.add(file.getName());
 399                         newDictionaryConfig.uncompressedFilenameToDictionaryInfo.put(
 400                                 file.getName(), dictionaryInfo);
 401                     }
 402                 } else {
 403                     Log.w(LOG, "dictDir is not a diretory: " + getDictDir().getPath());
 404                 }
 405                 if (!toAddSorted.isEmpty()) {
 406                     Collections.sort(toAddSorted, uncompressedFilenameComparator);
 407                     newDictionaryConfig.dictionaryFilesOrdered.addAll(toAddSorted);
 408                 }
 409
 410                 PersistentObjectCache.getInstance()
 411                         .write(C.DICTIONARY_CONFIGS, newDictionaryConfig);
 412                 synchronized (this) {
 413                     dictionaryConfig = newDictionaryConfig;
 414                 }
 415
 416                 try {
 417                     onUpdateFinished.run();
 418                 } catch (Exception e) {
 419                     Log.e(LOG, "Exception running callback.", e);
 420                 }
 421             }
 422         }).start();
 423     }
 424
 425     public boolean matchesFilters(final DictionaryInfo dictionaryInfo, final String[] filters) {
 426         if (filters == null) {
 427             return true;
 428         }
 429         for (final String filter : filters) {
 430             if (!getDictionaryName(dictionaryInfo.uncompressedFilename).toLowerCase().contains(
 431                     filter)) {
 432                 return false;
 433             }
 434         }
 435         return true;
 436     }
 437
 438     public synchronized List<DictionaryInfo> getDictionariesOnDevice(String[] filters) {
 439         final List<DictionaryInfo> result = new ArrayList<DictionaryInfo>(
 440                 dictionaryConfig.dictionaryFilesOrdered.size());
 441         for (final String uncompressedFilename : dictionaryConfig.dictionaryFilesOrdered) {
 442             final DictionaryInfo dictionaryInfo = dictionaryConfig.uncompressedFilenameToDictionaryInfo
 443                     .get(uncompressedFilename);
 444             if (dictionaryInfo != null && matchesFilters(dictionaryInfo, filters)) {
 445                 result.add(dictionaryInfo);
 446             }
 447         }
 448         return result;
 449     }
 450
 451     public List<DictionaryInfo> getDownloadableDictionaries(String[] filters) {
 452         final List<DictionaryInfo> result = new ArrayList<DictionaryInfo>(
 453                 dictionaryConfig.dictionaryFilesOrdered.size());
 454
 455         final Map<String, DictionaryInfo> remaining = new LinkedHashMap<String, DictionaryInfo>(
 456                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO);
 457         remaining.keySet().removeAll(dictionaryConfig.dictionaryFilesOrdered);
 458         for (final DictionaryInfo dictionaryInfo : remaining.values()) {
 459             if (matchesFilters(dictionaryInfo, filters)) {
 460                 result.add(dictionaryInfo);
 461             }
 462         }
 463         Collections.sort(result, dictionaryInfoComparator);
 464         return result;
 465     }
 466
 467     public synchronized boolean isDictionaryOnDevice(String uncompressedFilename) {
 468         return dictionaryConfig.uncompressedFilenameToDictionaryInfo.get(uncompressedFilename) != null;
 469     }
 470
 471     public boolean updateAvailable(final DictionaryInfo dictionaryInfo) {
 472         final DictionaryInfo downloadable =
 473                 DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO.get(
 474                         dictionaryInfo.uncompressedFilename);
 475         return downloadable != null &&
 476                 downloadable.creationMillis > dictionaryInfo.creationMillis;
 477     }
 478
 479     public DictionaryInfo getDownloadable(final String uncompressedFilename) {
 480         final DictionaryInfo downloadable = DOWNLOADABLE_UNCOMPRESSED_FILENAME_NAME_TO_DICTIONARY_INFO
 481                 .get(uncompressedFilename);
 482         return downloadable;
 483     }
 484
 485 }