src/com/hughes/android/dictionary/DictionaryManagerActivity.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.AlertDialog;
  18 import android.app.DownloadManager;
  19 import android.app.DownloadManager.Request;
  20 import android.content.BroadcastReceiver;
  21 import android.content.Context;
  22 import android.content.Intent;
  23 import android.content.IntentFilter;
  24 import android.content.SharedPreferences;
  25 import android.content.SharedPreferences.Editor;
  26 import android.database.Cursor;
  27 import android.net.Uri;
  28 import android.os.Bundle;
  29 import android.os.Environment;
  30 import android.os.Handler;
  31 import android.preference.PreferenceManager;
  32 import android.support.v7.app.ActionBar;
  33 import android.support.v7.app.ActionBarActivity;
  34 import android.support.v7.widget.SearchView;
  35 import android.support.v7.widget.SearchView.OnQueryTextListener;
  36 import android.support.v7.widget.Toolbar;
  37 import android.util.Log;
  38 import android.util.TypedValue;
  39 import android.view.ContextMenu;
  40 import android.view.ContextMenu.ContextMenuInfo;
  41 import android.view.LayoutInflater;
  42 import android.view.Menu;
  43 import android.view.View;
  44 import android.view.View.OnClickListener;
  45 import android.view.ViewGroup;
  46 import android.view.inputmethod.EditorInfo;
  47 import android.view.inputmethod.InputMethodManager;
  48 import android.widget.AdapterView.AdapterContextMenuInfo;
  49 import android.widget.BaseAdapter;
  50 import android.widget.Button;
  51 import android.widget.CompoundButton;
  52 import android.widget.CompoundButton.OnCheckedChangeListener;
  53 import android.widget.FrameLayout;
  54 import android.widget.LinearLayout;
  55 import android.widget.ListAdapter;
  56 import android.widget.ListView;
  57 import android.widget.TextView;
  58 import android.widget.Toast;
  59 import android.widget.ToggleButton;
  60
  61 import com.hughes.android.dictionary.DictionaryInfo.IndexInfo;
  62 import com.hughes.android.util.IntentLauncher;
  63
  64 import java.io.File;
  65 import java.io.FileOutputStream;
  66 import java.io.IOException;
  67 import java.io.InputStream;
  68 import java.io.OutputStream;
  69 import java.net.MalformedURLException;
  70 import java.net.URL;
  71 import java.util.Collections;
  72 import java.util.List;
  73 import java.util.zip.ZipEntry;
  74 import java.util.zip.ZipFile;
  75
  76 // Right-click:
  77 //  Delete, move to top.
  78
  79 public class DictionaryManagerActivity extends ActionBarActivity {
  80
  81     static final String LOG = "QuickDic";
  82     static boolean blockAutoLaunch = false;
  83
  84     private ListView listView;
  85     private ListView getListView() {
  86         if (listView == null) {
  87             listView = (ListView)findViewById(android.R.id.list);
  88         }
  89         return listView;
  90     }
  91     private void setListAdapter(ListAdapter adapter) {
  92         getListView().setAdapter(adapter);
  93     }
  94     private ListAdapter getListAdapter() {
  95         return getListView().getAdapter();
  96     }
  97
  98     DictionaryApplication application;
  99
 100     SearchView filterSearchView;
 101     ToggleButton showDownloadable;
 102
 103     LinearLayout dictionariesOnDeviceHeaderRow;
 104     LinearLayout downloadableDictionariesHeaderRow;
 105
 106     Handler uiHandler;
 107
 108     Runnable dictionaryUpdater = new Runnable() {
 109         @Override
 110         public void run() {
 111             if (uiHandler == null) {
 112                 return;
 113             }
 114             uiHandler.post(new Runnable() {
 115                 @Override
 116                 public void run() {
 117                     setMyListAdapater();
 118                 }
 119             });
 120         }
 121     };
 122
 123     final BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
 124         @Override
 125         public void onReceive(Context context, Intent intent) {
 126             final String action = intent.getAction();
 127
 128             if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
 129                 final long downloadId = intent.getLongExtra(
 130                         DownloadManager.EXTRA_DOWNLOAD_ID, 0);
 131                 final DownloadManager.Query query = new DownloadManager.Query();
 132                 query.setFilterById(downloadId);
 133                 final DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
 134                 final Cursor cursor = downloadManager.query(query);
 135
 136                 if (cursor == null || !cursor.moveToFirst()) {
 137                     Log.e(LOG, "Couldn't find download.");
 138                     return;
 139                 }
 140
 141                 final String dest = cursor
 142                         .getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));
 143                 final int status = cursor
 144                         .getInt(cursor
 145                                 .getColumnIndex(DownloadManager.COLUMN_STATUS));
 146                 if (DownloadManager.STATUS_SUCCESSFUL != status) {
 147                     final int reason = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_REASON));
 148                     Log.w(LOG,
 149                             "Download failed: status=" + status +
 150                                     ", reason=" + reason);
 151                     String msg = Integer.toString(reason);
 152                     switch (reason) {
 153                     case DownloadManager.ERROR_FILE_ALREADY_EXISTS: msg = "File exists"; break;
 154                     case DownloadManager.ERROR_FILE_ERROR: msg = "File error"; break;
 155                     case DownloadManager.ERROR_INSUFFICIENT_SPACE: msg = "Not enough space"; break;
 156                     }
 157                     new AlertDialog.Builder(context).setTitle(getString(R.string.error)).setMessage(getString(R.string.downloadFailed, reason)).setNeutralButton("Close", null).show();
 158                     return;
 159                 }
 160
 161                 Log.w(LOG, "Download finished: " + dest);
 162                 Toast.makeText(context, getString(R.string.unzippingDictionary, dest),
 163                         Toast.LENGTH_LONG).show();
 164
 165
 166                 final File localZipFile = new File(Uri.parse(dest).getPath());
 167                 try {
 168                     ZipFile zipFile = new ZipFile(localZipFile);
 169                     final ZipEntry zipEntry = zipFile.entries().nextElement();
 170                     Log.d(LOG, "Unzipping entry: " + zipEntry.getName());
 171                     final InputStream zipIn = zipFile.getInputStream(zipEntry);
 172                     File targetFile = new File(application.getDictDir(), zipEntry.getName());
 173                     if (targetFile.exists()) {
 174                         targetFile.renameTo(new File(targetFile.getAbsolutePath().replace(".quickdic", ".bak.quickdic")));
 175                         targetFile = new File(application.getDictDir(), zipEntry.getName());
 176                     }
 177                     final OutputStream zipOut = new FileOutputStream(targetFile);
 178                     copyStream(zipIn, zipOut);
 179                     zipFile.close();
 180                     zipOut.close();
 181                     application.backgroundUpdateDictionaries(dictionaryUpdater);
 182                     Toast.makeText(context, getString(R.string.installationFinished, dest),
 183                             Toast.LENGTH_LONG).show();
 184                 } catch (Exception e) {
 185                     String msg = getString(R.string.unzippingFailed, dest);
 186                     File dir = application.getDictDir();
 187                     if (!dir.canWrite() || !application.checkFileCreate(dir)) {
 188                         msg = getString(R.string.notWritable, dir.getAbsolutePath());
 189                     }
 190                     new AlertDialog.Builder(context).setTitle(getString(R.string.error)).setMessage(msg).setNeutralButton("Close", null).show();
 191                     Log.e(LOG, "Failed to unzip.", e);
 192                 } finally {
 193                     localZipFile.delete();
 194                 }
 195             }
 196         }
 197     };
 198
 199     public static Intent getLaunchIntent(Context c) {
 200         final Intent intent = new Intent(c, DictionaryManagerActivity.class);
 201         intent.putExtra(C.CAN_AUTO_LAUNCH_DICT, false);
 202         return intent;
 203     }
 204
 205     @Override
 206     public void onCreate(Bundle savedInstanceState) {
 207         // This must be first, otherwise the actiona bar doesn't get
 208         // styled properly.
 209         setTheme(((DictionaryApplication) getApplication()).getSelectedTheme().themeId);
 210
 211         super.onCreate(savedInstanceState);
 212         Log.d(LOG, "onCreate:" + this);
 213
 214         application = (DictionaryApplication) getApplication();
 215
 216         blockAutoLaunch = false;
 217
 218         // UI init.
 219         setContentView(R.layout.dictionary_manager_activity);
 220
 221         dictionariesOnDeviceHeaderRow = (LinearLayout) LayoutInflater.from(
 222                 getListView().getContext()).inflate(
 223                 R.layout.dictionary_manager_header_row_on_device, getListView(), false);
 224
 225         downloadableDictionariesHeaderRow = (LinearLayout) LayoutInflater.from(
 226                 getListView().getContext()).inflate(
 227                 R.layout.dictionary_manager_header_row_downloadable, getListView(), false);
 228
 229         showDownloadable = (ToggleButton) downloadableDictionariesHeaderRow
 230                 .findViewById(R.id.hideDownloadable);
 231         showDownloadable.setOnCheckedChangeListener(new OnCheckedChangeListener() {
 232             @Override
 233             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 234                 onShowDownloadableChanged();
 235             }
 236         });
 237
 238         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 239         final String thanksForUpdatingLatestVersion = getString(R.string.thanksForUpdatingVersion);
 240         if (!prefs.getString(C.THANKS_FOR_UPDATING_VERSION, "").equals(
 241                 thanksForUpdatingLatestVersion)) {
 242             blockAutoLaunch = true;
 243             startActivity(HtmlDisplayActivity.getWhatsNewLaunchIntent(getApplicationContext()));
 244             prefs.edit().putString(C.THANKS_FOR_UPDATING_VERSION, thanksForUpdatingLatestVersion)
 245                     .commit();
 246         }
 247
 248         registerReceiver(broadcastReceiver, new IntentFilter(
 249                 DownloadManager.ACTION_DOWNLOAD_COMPLETE));
 250
 251         setMyListAdapater();
 252         registerForContextMenu(getListView());
 253
 254         final File dictDir = application.getDictDir();
 255         if (!dictDir.canRead() || !dictDir.canExecute()) {
 256             blockAutoLaunch = true;
 257
 258             AlertDialog.Builder builder = new AlertDialog.Builder(getListView().getContext());
 259             builder.setTitle(getString(R.string.error));
 260             builder.setMessage(getString(
 261                     R.string.unableToReadDictionaryDir,
 262                     dictDir.getAbsolutePath(),
 263                     Environment.getExternalStorageDirectory()));
 264             builder.setNeutralButton("Close", null);
 265             builder.create().show();
 266         }
 267
 268         onCreateSetupActionBar();
 269     }
 270
 271     private void onCreateSetupActionBar() {
 272         ActionBar actionBar = getSupportActionBar();
 273         actionBar.setDisplayShowTitleEnabled(false);
 274         actionBar.setDisplayShowHomeEnabled(false);
 275         actionBar.setDisplayHomeAsUpEnabled(false);
 276
 277         filterSearchView = new SearchView(getSupportActionBar().getThemedContext());
 278         filterSearchView.setIconifiedByDefault(false);
 279         // filterSearchView.setIconified(false); // puts the magnifying glass in
 280         // the
 281         // wrong place.
 282         filterSearchView.setQueryHint(getString(R.string.searchText));
 283         filterSearchView.setSubmitButtonEnabled(false);
 284         FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.WRAP_CONTENT,
 285                 FrameLayout.LayoutParams.WRAP_CONTENT);
 286         filterSearchView.setLayoutParams(lp);
 287         filterSearchView.setImeOptions(
 288                 EditorInfo.IME_ACTION_DONE |
 289                         EditorInfo.IME_FLAG_NO_EXTRACT_UI |
 290                         // EditorInfo.IME_FLAG_NO_FULLSCREEN | // Requires API
 291                         // 11
 292                         EditorInfo.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
 293
 294         filterSearchView.setOnQueryTextListener(new OnQueryTextListener() {
 295             @Override
 296             public boolean onQueryTextSubmit(String query) {
 297                 filterSearchView.clearFocus();
 298                 return false;
 299             }
 300
 301             @Override
 302             public boolean onQueryTextChange(String filterText) {
 303                 setMyListAdapater();
 304                 return true;
 305             }
 306         });
 307         filterSearchView.setFocusable(true);
 308
 309         actionBar.setCustomView(filterSearchView);
 310         actionBar.setDisplayShowCustomEnabled(true);
 311
 312         // Avoid wasting space on large left inset
 313         Toolbar tb = (Toolbar)filterSearchView.getParent();
 314         tb.setContentInsetsRelative(0, 0);
 315     }
 316
 317     @Override
 318     public void onDestroy() {
 319         super.onDestroy();
 320         unregisterReceiver(broadcastReceiver);
 321     }
 322
 323     private static int copyStream(final InputStream in, final OutputStream out)
 324             throws IOException {
 325         int bytesRead;
 326         final byte[] bytes = new byte[1024 * 16];
 327         while ((bytesRead = in.read(bytes)) != -1) {
 328             out.write(bytes, 0, bytesRead);
 329         }
 330         in.close();
 331         out.close();
 332         return bytesRead;
 333     }
 334
 335     @Override
 336     protected void onStart() {
 337         super.onStart();
 338         uiHandler = new Handler();
 339     }
 340
 341     @Override
 342     protected void onStop() {
 343         super.onStop();
 344         uiHandler = null;
 345     }
 346
 347     @Override
 348     protected void onResume() {
 349         super.onResume();
 350
 351         if (PreferenceActivity.prefsMightHaveChanged) {
 352             PreferenceActivity.prefsMightHaveChanged = false;
 353             finish();
 354             startActivity(getIntent());
 355         }
 356
 357         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 358         showDownloadable.setChecked(prefs.getBoolean(C.SHOW_DOWNLOADABLE, true));
 359
 360         if (!blockAutoLaunch &&
 361                 getIntent().getBooleanExtra(C.CAN_AUTO_LAUNCH_DICT, true) &&
 362                 prefs.contains(C.DICT_FILE) &&
 363                 prefs.contains(C.INDEX_SHORT_NAME)) {
 364             Log.d(LOG, "Skipping DictionaryManager, going straight to dictionary.");
 365             startActivity(DictionaryActivity.getLaunchIntent(getApplicationContext(),
 366                     new File(prefs.getString(C.DICT_FILE, "")),
 367                     prefs.getString(C.INDEX_SHORT_NAME, ""),
 368                     prefs.getString(C.SEARCH_TOKEN, "")));
 369             finish();
 370             return;
 371         }
 372
 373         // Remove the active dictionary from the prefs so we won't autolaunch
 374         // next time.
 375         final Editor editor = prefs.edit();
 376         editor.remove(C.DICT_FILE);
 377         editor.remove(C.INDEX_SHORT_NAME);
 378         editor.remove(C.SEARCH_TOKEN);
 379         editor.commit();
 380
 381         application.backgroundUpdateDictionaries(dictionaryUpdater);
 382
 383         setMyListAdapater();
 384     }
 385
 386     @Override
 387     public boolean onCreateOptionsMenu(final Menu menu) {
 388         application.onCreateGlobalOptionsMenu(this, menu);
 389         return true;
 390     }
 391
 392     @Override
 393     public void onCreateContextMenu(final ContextMenu menu, final View view,
 394             final ContextMenuInfo menuInfo) {
 395         super.onCreateContextMenu(menu, view, menuInfo);
 396         Log.d(LOG, "onCreateContextMenu, " + menuInfo);
 397
 398         final AdapterContextMenuInfo adapterContextMenuInfo =
 399                 (AdapterContextMenuInfo) menuInfo;
 400         final int position = adapterContextMenuInfo.position;
 401         final MyListAdapter.Row row = (MyListAdapter.Row) getListAdapter().getItem(position);
 402
 403         if (row.dictionaryInfo == null) {
 404             return;
 405         }
 406
 407         if (position > 0 && row.onDevice) {
 408             final android.view.MenuItem moveToTopMenuItem =
 409                     menu.add(R.string.moveToTop);
 410             moveToTopMenuItem.setOnMenuItemClickListener(new
 411                     android.view.MenuItem.OnMenuItemClickListener() {
 412                         @Override
 413                         public boolean onMenuItemClick(android.view.MenuItem item) {
 414                             application.moveDictionaryToTop(row.dictionaryInfo);
 415                             setMyListAdapater();
 416                             return true;
 417                         }
 418                     });
 419         }
 420
 421         if (row.onDevice) {
 422             final android.view.MenuItem deleteMenuItem = menu.add(R.string.deleteDictionary);
 423             deleteMenuItem
 424                     .setOnMenuItemClickListener(new android.view.MenuItem.OnMenuItemClickListener() {
 425                         @Override
 426                         public boolean onMenuItemClick(android.view.MenuItem item) {
 427                             application.deleteDictionary(row.dictionaryInfo);
 428                             setMyListAdapater();
 429                             return true;
 430                         }
 431                     });
 432         }
 433     }
 434
 435     private void onShowDownloadableChanged() {
 436         setMyListAdapater();
 437         Editor prefs = PreferenceManager.getDefaultSharedPreferences(this).edit();
 438         prefs.putBoolean(C.SHOW_DOWNLOADABLE, showDownloadable.isChecked());
 439         prefs.commit();
 440     }
 441
 442     class MyListAdapter extends BaseAdapter {
 443
 444         List<DictionaryInfo> dictionariesOnDevice;
 445         List<DictionaryInfo> downloadableDictionaries;
 446
 447         class Row {
 448             DictionaryInfo dictionaryInfo;
 449             boolean onDevice;
 450
 451             private Row(DictionaryInfo dictinoaryInfo, boolean onDevice) {
 452                 this.dictionaryInfo = dictinoaryInfo;
 453                 this.onDevice = onDevice;
 454             }
 455         }
 456
 457         private MyListAdapter(final String[] filters) {
 458             dictionariesOnDevice = application.getDictionariesOnDevice(filters);
 459             if (showDownloadable.isChecked()) {
 460                 downloadableDictionaries = application.getDownloadableDictionaries(filters);
 461             } else {
 462                 downloadableDictionaries = Collections.emptyList();
 463             }
 464         }
 465
 466         @Override
 467         public int getCount() {
 468             return 2 + dictionariesOnDevice.size() + downloadableDictionaries.size();
 469         }
 470
 471         @Override
 472         public Row getItem(int position) {
 473             if (position == 0) {
 474                 return new Row(null, true);
 475             }
 476             position -= 1;
 477
 478             if (position < dictionariesOnDevice.size()) {
 479                 return new Row(dictionariesOnDevice.get(position), true);
 480             }
 481             position -= dictionariesOnDevice.size();
 482
 483             if (position == 0) {
 484                 return new Row(null, false);
 485             }
 486             position -= 1;
 487
 488             assert position < downloadableDictionaries.size();
 489             return new Row(downloadableDictionaries.get(position), false);
 490         }
 491
 492         @Override
 493         public long getItemId(int position) {
 494             return position;
 495         }
 496
 497         @Override
 498         public View getView(int position, View convertView, ViewGroup parent) {
 499             if (convertView instanceof LinearLayout &&
 500                     convertView != dictionariesOnDeviceHeaderRow &&
 501                     convertView != downloadableDictionariesHeaderRow) {
 502                 /*
 503                  * This is done to try to avoid leaking memory that used to
 504                  * happen on Android 4.0.3
 505                  */
 506                 ((LinearLayout) convertView).removeAllViews();
 507             }
 508
 509             final Row row = getItem(position);
 510
 511             if (row.onDevice) {
 512                 if (row.dictionaryInfo == null) {
 513                     return dictionariesOnDeviceHeaderRow;
 514                 }
 515                 return createDictionaryRow(row.dictionaryInfo, parent, true);
 516             }
 517
 518             if (row.dictionaryInfo == null) {
 519                 return downloadableDictionariesHeaderRow;
 520             }
 521             return createDictionaryRow(row.dictionaryInfo, parent, false);
 522         }
 523
 524     }
 525
 526     private void setMyListAdapater() {
 527         final String filter = filterSearchView == null ? "" : filterSearchView.getQuery()
 528                 .toString();
 529         final String[] filters = filter.trim().toLowerCase().split("(\\s|-)+");
 530         setListAdapter(new MyListAdapter(filters));
 531     }
 532
 533     private View createDictionaryRow(final DictionaryInfo dictionaryInfo,
 534             final ViewGroup parent, boolean canLaunch) {
 535
 536         View row = LayoutInflater.from(parent.getContext()).inflate(
 537                 R.layout.dictionary_manager_row, parent, false);
 538         final TextView name = (TextView) row.findViewById(R.id.dictionaryName);
 539         final TextView details = (TextView) row.findViewById(R.id.dictionaryDetails);
 540         name.setText(application.getDictionaryName(dictionaryInfo.uncompressedFilename));
 541
 542         final boolean updateAvailable = application.updateAvailable(dictionaryInfo);
 543         final Button downloadButton = (Button) row.findViewById(R.id.downloadButton);
 544         final DictionaryInfo downloadable = application.getDownloadable(dictionaryInfo.uncompressedFilename);
 545         boolean broken = false;
 546         if (!dictionaryInfo.isValid()) {
 547             broken = true;
 548             canLaunch = false;
 549         }
 550         if (downloadable != null && (!canLaunch || updateAvailable)) {
 551             downloadButton
 552                     .setText(getString(
 553                             R.string.downloadButton,
 554                             downloadable.zipBytes / 1024.0 / 1024.0));
 555             downloadButton.setMinWidth(application.languageButtonPixels * 3 / 2);
 556             downloadButton.setOnClickListener(new OnClickListener() {
 557                 @Override
 558                 public void onClick(View arg0) {
 559                     downloadDictionary(downloadable.downloadUrl, downloadable.zipBytes, downloadButton);
 560                 }
 561             });
 562         } else {
 563             downloadButton.setVisibility(View.INVISIBLE);
 564         }
 565
 566         LinearLayout buttons = (LinearLayout) row.findViewById(R.id.dictionaryLauncherButtons);
 567         final List<IndexInfo> sortedIndexInfos = application
 568                 .sortedIndexInfos(dictionaryInfo.indexInfos);
 569         final StringBuilder builder = new StringBuilder();
 570         if (updateAvailable) {
 571             builder.append(getString(R.string.updateAvailable));
 572         }
 573         for (IndexInfo indexInfo : sortedIndexInfos) {
 574             final View button = application.createButton(buttons.getContext(), dictionaryInfo,
 575                     indexInfo);
 576             buttons.addView(button);
 577
 578             if (canLaunch) {
 579                 button.setOnClickListener(
 580                         new IntentLauncher(buttons.getContext(),
 581                                 DictionaryActivity.getLaunchIntent(getApplicationContext(),
 582                                         application.getPath(dictionaryInfo.uncompressedFilename),
 583                                         indexInfo.shortName, "")));
 584
 585             } else {
 586                 button.setEnabled(false);
 587             }
 588             if (builder.length() != 0) {
 589                 builder.append("; ");
 590             }
 591             builder.append(getString(R.string.indexInfo, indexInfo.shortName,
 592                     indexInfo.mainTokenCount));
 593         }
 594         builder.append("; ");
 595         builder.append(getString(R.string.downloadButton, dictionaryInfo.uncompressedBytes / 1024.0 / 1024.0));
 596         if (broken) {
 597             name.setText("Broken: " + application.getDictionaryName(dictionaryInfo.uncompressedFilename));
 598             builder.append("; Cannot be used, redownload, check hardware/file system");
 599             // Allow deleting, but cannot open
 600             row.setLongClickable(true);
 601         }
 602         details.setText(builder.toString());
 603
 604         if (canLaunch) {
 605             row.setClickable(true);
 606             row.setOnClickListener(new IntentLauncher(parent.getContext(),
 607                     DictionaryActivity.getLaunchIntent(getApplicationContext(),
 608                             application.getPath(dictionaryInfo.uncompressedFilename),
 609                             dictionaryInfo.indexInfos.get(0).shortName, "")));
 610             row.setFocusable(true);
 611             row.setLongClickable(true);
 612         }
 613         row.setBackgroundResource(android.R.drawable.menuitem_background);
 614
 615         return row;
 616     }
 617
 618     private void downloadDictionary(final String downloadUrl, long bytes, Button downloadButton) {
 619         DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
 620         final DownloadManager.Query query = new DownloadManager.Query();
 621         query.setFilterByStatus(DownloadManager.STATUS_PAUSED | DownloadManager.STATUS_PENDING | DownloadManager.STATUS_RUNNING);
 622         final Cursor cursor = downloadManager.query(query);
 623
 624         // Due to a bug, cursor is null instead of empty when
 625         // the download manager is disabled.
 626         if (cursor == null) {
 627             new AlertDialog.Builder(DictionaryManagerActivity.this).setTitle(getString(R.string.error))
 628                     .setMessage(getString(R.string.downloadFailed, R.string.downloadManagerQueryFailed))
 629                     .setNeutralButton("Close", null).show();
 630             return;
 631         }
 632
 633         while (cursor.moveToNext()) {
 634             if (downloadUrl.equals(cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_URI))))
 635                 break;
 636         }
 637         if (!cursor.isAfterLast()) {
 638             downloadManager.remove(cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_ID)));
 639             downloadButton
 640                     .setText(getString(
 641                             R.string.downloadButton,
 642                             bytes / 1024.0 / 1024.0));
 643             cursor.close();
 644             return;
 645         }
 646         cursor.close();
 647         Request request = new Request(
 648                 Uri.parse(downloadUrl));
 649         try {
 650             final String destFile = new File(new URL(downloadUrl).getFile())
 651                     .getName();
 652             Log.d(LOG, "Downloading to: " + destFile);
 653
 654             try {
 655                 request.setDestinationInExternalFilesDir(getApplicationContext(), null, destFile);
 656             } catch (IllegalStateException e) {
 657                 request.setDestinationUri(Uri.fromFile(new File(Environment
 658                         .getExternalStorageDirectory(), destFile)));
 659             }
 660         } catch (MalformedURLException e) {
 661             throw new RuntimeException(e);
 662         }
 663         downloadManager.enqueue(request);
 664         downloadButton.setText("X");
 665     }
 666
 667 }