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.Manifest;
  18 import android.app.AlertDialog;
  19 import android.app.DownloadManager;
  20 import android.app.DownloadManager.Request;
  21 import android.content.BroadcastReceiver;
  22 import android.content.ContentResolver;
  23 import android.content.Context;
  24 import android.content.Intent;
  25 import android.content.IntentFilter;
  26 import android.content.SharedPreferences;
  27 import android.content.SharedPreferences.Editor;
  28 import android.content.pm.PackageManager;
  29 import android.database.Cursor;
  30 import android.net.Uri;
  31 import android.os.Bundle;
  32 import android.os.Environment;
  33 import android.os.Handler;
  34 import android.preference.PreferenceManager;
  35 import android.provider.Settings;
  36 import android.support.v4.app.ActivityCompat;
  37 import android.support.v4.content.ContextCompat;
  38 import android.support.v4.view.MenuItemCompat;
  39 import android.support.v7.app.ActionBar;
  40 import android.support.v7.app.ActionBarActivity;
  41 import android.support.v7.widget.SearchView;
  42 import android.support.v7.widget.SearchView.OnQueryTextListener;
  43 import android.support.v7.widget.Toolbar;
  44 import android.text.InputType;
  45 import android.util.Log;
  46 import android.util.TypedValue;
  47 import android.view.ContextMenu;
  48 import android.view.ContextMenu.ContextMenuInfo;
  49 import android.view.LayoutInflater;
  50 import android.view.Menu;
  51 import android.view.MenuItem;
  52 import android.view.View;
  53 import android.view.View.OnClickListener;
  54 import android.view.ViewGroup;
  55 import android.view.inputmethod.EditorInfo;
  56 import android.view.inputmethod.InputMethodManager;
  57 import android.widget.AdapterView.AdapterContextMenuInfo;
  58 import android.widget.BaseAdapter;
  59 import android.widget.Button;
  60 import android.widget.CompoundButton;
  61 import android.widget.CompoundButton.OnCheckedChangeListener;
  62 import android.widget.FrameLayout;
  63 import android.widget.LinearLayout;
  64 import android.widget.ListAdapter;
  65 import android.widget.ListView;
  66 import android.widget.TextView;
  67 import android.widget.Toast;
  68 import android.widget.ToggleButton;
  69
  70 import com.hughes.android.dictionary.DictionaryInfo.IndexInfo;
  71 import com.hughes.android.util.IntentLauncher;
  72
  73 import java.io.BufferedInputStream;
  74 import java.io.File;
  75 import java.io.FileInputStream;
  76 import java.io.FileOutputStream;
  77 import java.io.IOException;
  78 import java.io.InputStream;
  79 import java.io.OutputStream;
  80 import java.net.MalformedURLException;
  81 import java.net.URL;
  82 import java.nio.ByteBuffer;
  83 import java.nio.channels.FileChannel;
  84 import java.util.Collections;
  85 import java.util.HashSet;
  86 import java.util.List;
  87 import java.util.Set;
  88 import java.util.zip.ZipEntry;
  89 import java.util.zip.ZipFile;
  90 import java.util.zip.ZipInputStream;
  91
  92 // Right-click:
  93 //  Delete, move to top.
  94
  95 public class DictionaryManagerActivity extends ActionBarActivity {
  96
  97     static final String LOG = "QuickDic";
  98     static boolean blockAutoLaunch = false;
  99
 100     private ListView listView;
 101     private ListView getListView() {
 102         if (listView == null) {
 103             listView = (ListView)findViewById(android.R.id.list);
 104         }
 105         return listView;
 106     }
 107     private void setListAdapter(ListAdapter adapter) {
 108         getListView().setAdapter(adapter);
 109     }
 110     private ListAdapter getListAdapter() {
 111         return getListView().getAdapter();
 112     }
 113
 114     // For DownloadManager bug workaround
 115     private Set<Long> finishedDownloadIds = new HashSet<Long>();
 116
 117     DictionaryApplication application;
 118
 119     SearchView filterSearchView;
 120     ToggleButton showDownloadable;
 121
 122     LinearLayout dictionariesOnDeviceHeaderRow;
 123     LinearLayout downloadableDictionariesHeaderRow;
 124
 125     Handler uiHandler;
 126
 127     Runnable dictionaryUpdater = new Runnable() {
 128         @Override
 129         public void run() {
 130             if (uiHandler == null) {
 131                 return;
 132             }
 133             uiHandler.post(new Runnable() {
 134                 @Override
 135                 public void run() {
 136                     setMyListAdapater();
 137                 }
 138             });
 139         }
 140     };
 141
 142     final BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
 143         @Override
 144         public synchronized void onReceive(Context context, Intent intent) {
 145             final String action = intent.getAction();
 146
 147             if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
 148                 final long downloadId = intent.getLongExtra(
 149                                             DownloadManager.EXTRA_DOWNLOAD_ID, 0);
 150                 if (finishedDownloadIds.contains(downloadId)) return; // ignore double notifications
 151                 final DownloadManager.Query query = new DownloadManager.Query();
 152                 query.setFilterById(downloadId);
 153                 final DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
 154                 final Cursor cursor = downloadManager.query(query);
 155
 156                 if (cursor == null || !cursor.moveToFirst()) {
 157                     Log.e(LOG, "Couldn't find download.");
 158                     return;
 159                 }
 160
 161                 final String dest = cursor
 162                                     .getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));
 163                 final int status = cursor
 164                                    .getInt(cursor
 165                                            .getColumnIndex(DownloadManager.COLUMN_STATUS));
 166                 if (DownloadManager.STATUS_SUCCESSFUL != status) {
 167                     final int reason = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_REASON));
 168                     Log.w(LOG,
 169                           "Download failed: status=" + status +
 170                           ", reason=" + reason);
 171                     String msg = Integer.toString(reason);
 172                     switch (reason) {
 173                     case DownloadManager.ERROR_FILE_ALREADY_EXISTS:
 174                         msg = "File exists";
 175                         break;
 176                     case DownloadManager.ERROR_FILE_ERROR:
 177                         msg = "File error";
 178                         break;
 179                     case DownloadManager.ERROR_INSUFFICIENT_SPACE:
 180                         msg = "Not enough space";
 181                         break;
 182                     }
 183                     new AlertDialog.Builder(context).setTitle(getString(R.string.error)).setMessage(getString(R.string.downloadFailed, msg)).setNeutralButton("Close", null).show();
 184                     return;
 185                 }
 186
 187                 Log.w(LOG, "Download finished: " + dest + " Id: " + downloadId);
 188                 Toast.makeText(context, getString(R.string.unzippingDictionary, dest),
 189                                Toast.LENGTH_LONG).show();
 190
 191                 if (unzipInstall(context, Uri.parse(dest), dest)) {
 192                     finishedDownloadIds.add(downloadId);
 193                     Log.w(LOG, "Unzipping finished: " + dest + " Id: " + downloadId);
 194                 }
 195             }
 196         }
 197     };
 198
 199     private boolean unzipInstall(Context context, Uri zipUri, String dest) {
 200         File localZipFile = null;
 201         InputStream zipFileStream = null;
 202         ZipInputStream zipFile = null;
 203         FileOutputStream zipOut = null;
 204         boolean result = false;
 205         try {
 206             if (zipUri.getScheme().equals("content")) {
 207                 zipFileStream = context.getContentResolver().openInputStream(zipUri);
 208                 localZipFile = null;
 209             } else {
 210                 localZipFile = new File(zipUri.getPath());
 211                 zipFileStream = new FileInputStream(localZipFile);
 212             }
 213             zipFile = new ZipInputStream(new BufferedInputStream(zipFileStream));
 214             final ZipEntry zipEntry = zipFile.getNextEntry();
 215             Log.d(LOG, "Unzipping entry: " + zipEntry.getName());
 216             File targetFile = new File(application.getDictDir(), zipEntry.getName());
 217             if (targetFile.exists()) {
 218                 targetFile.renameTo(new File(targetFile.getAbsolutePath().replace(".quickdic", ".bak.quickdic")));
 219                 targetFile = new File(application.getDictDir(), zipEntry.getName());
 220             }
 221             zipOut = new FileOutputStream(targetFile);
 222             copyStream(zipFile, zipOut);
 223             application.backgroundUpdateDictionaries(dictionaryUpdater);
 224             Toast.makeText(context, getString(R.string.installationFinished, dest),
 225                            Toast.LENGTH_LONG).show();
 226             result = true;
 227         } catch (Exception e) {
 228             String msg = getString(R.string.unzippingFailed, dest);
 229             File dir = application.getDictDir();
 230             if (!dir.canWrite() || !application.checkFileCreate(dir)) {
 231                 msg = getString(R.string.notWritable, dir.getAbsolutePath());
 232             }
 233             new AlertDialog.Builder(context).setTitle(getString(R.string.error)).setMessage(msg).setNeutralButton("Close", null).show();
 234             Log.e(LOG, "Failed to unzip.", e);
 235         } finally {
 236             try {
 237                 if (zipOut != null) zipOut.close();
 238             } catch (IOException e) {}
 239             try {
 240                 if (zipFile != null) zipFile.close();
 241             } catch (IOException e) {}
 242             try {
 243                 if (zipFileStream != null) zipFileStream.close();
 244             } catch (IOException e) {}
 245             if (localZipFile != null) localZipFile.delete();
 246         }
 247         return result;
 248     }
 249
 250     public static Intent getLaunchIntent(Context c) {
 251         final Intent intent = new Intent(c, DictionaryManagerActivity.class);
 252         intent.putExtra(C.CAN_AUTO_LAUNCH_DICT, false);
 253         return intent;
 254     }
 255
 256     public void readableCheckAndError(boolean requestPermission) {
 257         final File dictDir = application.getDictDir();
 258         if (dictDir.canRead() && dictDir.canExecute()) return;
 259         blockAutoLaunch = true;
 260         if (requestPermission &&
 261                 ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 262             ActivityCompat.requestPermissions(this,
 263                                               new String[] {Manifest.permission.READ_EXTERNAL_STORAGE,
 264                                                       Manifest.permission.WRITE_EXTERNAL_STORAGE
 265                                                            }, 0);
 266             return;
 267         }
 268         blockAutoLaunch = true;
 269
 270         AlertDialog.Builder builder = new AlertDialog.Builder(getListView().getContext());
 271         builder.setTitle(getString(R.string.error));
 272         builder.setMessage(getString(
 273                                R.string.unableToReadDictionaryDir,
 274                                dictDir.getAbsolutePath(),
 275                                Environment.getExternalStorageDirectory()));
 276         builder.setNeutralButton("Close", null);
 277         builder.create().show();
 278     }
 279
 280     @Override
 281     public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
 282         readableCheckAndError(false);
 283
 284         application.backgroundUpdateDictionaries(dictionaryUpdater);
 285
 286         setMyListAdapater();
 287     }
 288
 289     @Override
 290     public void onCreate(Bundle savedInstanceState) {
 291         DictionaryApplication.INSTANCE.init(getApplicationContext());
 292         application = DictionaryApplication.INSTANCE;
 293         // This must be first, otherwise the action bar doesn't get
 294         // styled properly.
 295         setTheme(application.getSelectedTheme().themeId);
 296
 297         super.onCreate(savedInstanceState);
 298         Log.d(LOG, "onCreate:" + this);
 299
 300         setTheme(application.getSelectedTheme().themeId);
 301
 302         blockAutoLaunch = false;
 303
 304         // UI init.
 305         setContentView(R.layout.dictionary_manager_activity);
 306
 307         dictionariesOnDeviceHeaderRow = (LinearLayout) LayoutInflater.from(
 308                                             getListView().getContext()).inflate(
 309                                             R.layout.dictionary_manager_header_row_on_device, getListView(), false);
 310
 311         downloadableDictionariesHeaderRow = (LinearLayout) LayoutInflater.from(
 312                                                 getListView().getContext()).inflate(
 313                                                 R.layout.dictionary_manager_header_row_downloadable, getListView(), false);
 314
 315         showDownloadable = (ToggleButton) downloadableDictionariesHeaderRow
 316                            .findViewById(R.id.hideDownloadable);
 317         showDownloadable.setOnCheckedChangeListener(new OnCheckedChangeListener() {
 318             @Override
 319             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 320                 onShowDownloadableChanged();
 321             }
 322         });
 323
 324         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 325         final String thanksForUpdatingLatestVersion = getString(R.string.thanksForUpdatingVersion);
 326         if (!prefs.getString(C.THANKS_FOR_UPDATING_VERSION, "").equals(
 327                     thanksForUpdatingLatestVersion)) {
 328             blockAutoLaunch = true;
 329             startActivity(HtmlDisplayActivity.getWhatsNewLaunchIntent(getApplicationContext()));
 330             prefs.edit().putString(C.THANKS_FOR_UPDATING_VERSION, thanksForUpdatingLatestVersion)
 331             .commit();
 332         }
 333
 334         registerReceiver(broadcastReceiver, new IntentFilter(
 335                              DownloadManager.ACTION_DOWNLOAD_COMPLETE));
 336
 337         setMyListAdapater();
 338         registerForContextMenu(getListView());
 339         getListView().setItemsCanFocus(true);
 340
 341         readableCheckAndError(true);
 342
 343         onCreateSetupActionBar();
 344
 345         final Intent intent = getIntent();
 346         if (intent != null && intent.getAction() != null &&
 347             intent.getAction().equals(Intent.ACTION_VIEW)) {
 348             blockAutoLaunch = true;
 349             Uri uri = intent.getData();
 350             unzipInstall(this, uri, uri.getLastPathSegment());
 351         }
 352     }
 353
 354     private void onCreateSetupActionBar() {
 355         ActionBar actionBar = getSupportActionBar();
 356         actionBar.setDisplayShowTitleEnabled(false);
 357         actionBar.setDisplayShowHomeEnabled(false);
 358         actionBar.setDisplayHomeAsUpEnabled(false);
 359
 360         filterSearchView = new SearchView(getSupportActionBar().getThemedContext());
 361         filterSearchView.setIconifiedByDefault(false);
 362         // filterSearchView.setIconified(false); // puts the magnifying glass in
 363         // the
 364         // wrong place.
 365         filterSearchView.setQueryHint(getString(R.string.searchText));
 366         filterSearchView.setSubmitButtonEnabled(false);
 367         FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.WRAP_CONTENT,
 368                 FrameLayout.LayoutParams.WRAP_CONTENT);
 369         filterSearchView.setLayoutParams(lp);
 370         filterSearchView.setInputType(InputType.TYPE_CLASS_TEXT);
 371         filterSearchView.setImeOptions(
 372             EditorInfo.IME_ACTION_DONE |
 373             EditorInfo.IME_FLAG_NO_EXTRACT_UI |
 374             // EditorInfo.IME_FLAG_NO_FULLSCREEN | // Requires API
 375             // 11
 376             EditorInfo.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
 377
 378         filterSearchView.setOnQueryTextListener(new OnQueryTextListener() {
 379             @Override
 380             public boolean onQueryTextSubmit(String query) {
 381                 filterSearchView.clearFocus();
 382                 return false;
 383             }
 384
 385             @Override
 386             public boolean onQueryTextChange(String filterText) {
 387                 setMyListAdapater();
 388                 return true;
 389             }
 390         });
 391         filterSearchView.setFocusable(true);
 392
 393         actionBar.setCustomView(filterSearchView);
 394         actionBar.setDisplayShowCustomEnabled(true);
 395
 396         // Avoid wasting space on large left inset
 397         Toolbar tb = (Toolbar)filterSearchView.getParent();
 398         tb.setContentInsetsRelative(0, 0);
 399     }
 400
 401     @Override
 402     public void onDestroy() {
 403         super.onDestroy();
 404         unregisterReceiver(broadcastReceiver);
 405     }
 406
 407     private static void copyStream(final InputStream ins, final FileOutputStream outs)
 408     throws IOException {
 409         ByteBuffer buf = ByteBuffer.allocateDirect(1024 * 64);
 410         FileChannel out = outs.getChannel();
 411         int bytesRead;
 412         int pos = 0;
 413         final byte[] bytes = new byte[1024 * 64];
 414         do {
 415             bytesRead = ins.read(bytes, pos, bytes.length - pos);
 416             if (bytesRead != -1) pos += bytesRead;
 417             if (bytesRead == -1 ? pos != 0 : 2*pos >= bytes.length) {
 418                 buf.put(bytes, 0, pos);
 419                 pos = 0;
 420                 buf.flip();
 421                 while (buf.hasRemaining()) out.write(buf);
 422                 buf.clear();
 423             }
 424         } while (bytesRead != -1);
 425     }
 426
 427     @Override
 428     protected void onStart() {
 429         super.onStart();
 430         uiHandler = new Handler();
 431     }
 432
 433     @Override
 434     protected void onStop() {
 435         super.onStop();
 436         uiHandler = null;
 437     }
 438
 439     @Override
 440     protected void onResume() {
 441         super.onResume();
 442
 443         if (PreferenceActivity.prefsMightHaveChanged) {
 444             PreferenceActivity.prefsMightHaveChanged = false;
 445             finish();
 446             startActivity(getIntent());
 447         }
 448
 449         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 450         showDownloadable.setChecked(prefs.getBoolean(C.SHOW_DOWNLOADABLE, true));
 451
 452         if (!blockAutoLaunch &&
 453                 getIntent().getBooleanExtra(C.CAN_AUTO_LAUNCH_DICT, true) &&
 454                 prefs.contains(C.DICT_FILE) &&
 455                 prefs.contains(C.INDEX_SHORT_NAME)) {
 456             Log.d(LOG, "Skipping DictionaryManager, going straight to dictionary.");
 457             startActivity(DictionaryActivity.getLaunchIntent(getApplicationContext(),
 458                           new File(prefs.getString(C.DICT_FILE, "")),
 459                           prefs.getString(C.INDEX_SHORT_NAME, ""),
 460                           prefs.getString(C.SEARCH_TOKEN, "")));
 461             finish();
 462             return;
 463         }
 464
 465         // Remove the active dictionary from the prefs so we won't autolaunch
 466         // next time.
 467         final Editor editor = prefs.edit();
 468         editor.remove(C.DICT_FILE);
 469         editor.remove(C.INDEX_SHORT_NAME);
 470         editor.remove(C.SEARCH_TOKEN);
 471         editor.commit();
 472
 473         application.backgroundUpdateDictionaries(dictionaryUpdater);
 474
 475         setMyListAdapater();
 476     }
 477
 478     @Override
 479     public boolean onCreateOptionsMenu(final Menu menu) {
 480         if ("true".equals(Settings.System.getString(getContentResolver(), "firebase.test.lab")))
 481         {
 482             return false; // testing the menu is not very interesting
 483         }
 484         final MenuItem sort = menu.add(getString(R.string.sortDicts));
 485         MenuItemCompat.setShowAsAction(sort, MenuItem.SHOW_AS_ACTION_NEVER);
 486         sort.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
 487             public boolean onMenuItemClick(final MenuItem menuItem) {
 488                 application.sortDictionaries();
 489                 setMyListAdapater();
 490                 return true;
 491             }
 492         });
 493
 494         application.onCreateGlobalOptionsMenu(this, menu);
 495         return true;
 496     }
 497
 498     @Override
 499     public void onCreateContextMenu(final ContextMenu menu, final View view,
 500                                     final ContextMenuInfo menuInfo) {
 501         super.onCreateContextMenu(menu, view, menuInfo);
 502         Log.d(LOG, "onCreateContextMenu, " + menuInfo);
 503
 504         final AdapterContextMenuInfo adapterContextMenuInfo =
 505             (AdapterContextMenuInfo) menuInfo;
 506         final int position = adapterContextMenuInfo.position;
 507         final MyListAdapter.Row row = (MyListAdapter.Row) getListAdapter().getItem(position);
 508
 509         if (row.dictionaryInfo == null) {
 510             return;
 511         }
 512
 513         if (position > 0 && row.onDevice) {
 514             final android.view.MenuItem moveToTopMenuItem =
 515                 menu.add(R.string.moveToTop);
 516             moveToTopMenuItem.setOnMenuItemClickListener(new
 517             android.view.MenuItem.OnMenuItemClickListener() {
 518                 @Override
 519                 public boolean onMenuItemClick(android.view.MenuItem item) {
 520                     application.moveDictionaryToTop(row.dictionaryInfo);
 521                     setMyListAdapater();
 522                     return true;
 523                 }
 524             });
 525         }
 526
 527         if (row.onDevice) {
 528             final android.view.MenuItem deleteMenuItem = menu.add(R.string.deleteDictionary);
 529             deleteMenuItem
 530             .setOnMenuItemClickListener(new android.view.MenuItem.OnMenuItemClickListener() {
 531                 @Override
 532                 public boolean onMenuItemClick(android.view.MenuItem item) {
 533                     application.deleteDictionary(row.dictionaryInfo);
 534                     setMyListAdapater();
 535                     return true;
 536                 }
 537             });
 538         }
 539     }
 540
 541     private void onShowDownloadableChanged() {
 542         setMyListAdapater();
 543         Editor prefs = PreferenceManager.getDefaultSharedPreferences(this).edit();
 544         prefs.putBoolean(C.SHOW_DOWNLOADABLE, showDownloadable.isChecked());
 545         prefs.commit();
 546     }
 547
 548     class MyListAdapter extends BaseAdapter {
 549
 550         List<DictionaryInfo> dictionariesOnDevice;
 551         List<DictionaryInfo> downloadableDictionaries;
 552
 553         class Row {
 554             DictionaryInfo dictionaryInfo;
 555             boolean onDevice;
 556
 557             private Row(DictionaryInfo dictionaryInfo, boolean onDevice) {
 558                 this.dictionaryInfo = dictionaryInfo;
 559                 this.onDevice = onDevice;
 560             }
 561         }
 562
 563         private MyListAdapter(final String[] filters) {
 564             dictionariesOnDevice = application.getDictionariesOnDevice(filters);
 565             if (showDownloadable.isChecked()) {
 566                 downloadableDictionaries = application.getDownloadableDictionaries(filters);
 567             } else {
 568                 downloadableDictionaries = Collections.emptyList();
 569             }
 570         }
 571
 572         @Override
 573         public int getCount() {
 574             return 2 + dictionariesOnDevice.size() + downloadableDictionaries.size();
 575         }
 576
 577         @Override
 578         public Row getItem(int position) {
 579             if (position == 0) {
 580                 return new Row(null, true);
 581             }
 582             position -= 1;
 583
 584             if (position < dictionariesOnDevice.size()) {
 585                 return new Row(dictionariesOnDevice.get(position), true);
 586             }
 587             position -= dictionariesOnDevice.size();
 588
 589             if (position == 0) {
 590                 return new Row(null, false);
 591             }
 592             position -= 1;
 593
 594             assert position < downloadableDictionaries.size();
 595             return new Row(downloadableDictionaries.get(position), false);
 596         }
 597
 598         @Override
 599         public long getItemId(int position) {
 600             return position;
 601         }
 602
 603         @Override
 604         public View getView(int position, View convertView, ViewGroup parent) {
 605             if (convertView instanceof LinearLayout &&
 606                     convertView != dictionariesOnDeviceHeaderRow &&
 607                     convertView != downloadableDictionariesHeaderRow) {
 608                 /*
 609                  * This is done to try to avoid leaking memory that used to
 610                  * happen on Android 4.0.3
 611                  */
 612                 ((LinearLayout) convertView).removeAllViews();
 613             }
 614
 615             final Row row = getItem(position);
 616
 617             if (row.onDevice) {
 618                 if (row.dictionaryInfo == null) {
 619                     return dictionariesOnDeviceHeaderRow;
 620                 }
 621                 return createDictionaryRow(row.dictionaryInfo, parent, true);
 622             }
 623
 624             if (row.dictionaryInfo == null) {
 625                 return downloadableDictionariesHeaderRow;
 626             }
 627             return createDictionaryRow(row.dictionaryInfo, parent, false);
 628         }
 629
 630     }
 631
 632     private void setMyListAdapater() {
 633         final String filter = filterSearchView == null ? "" : filterSearchView.getQuery()
 634                               .toString();
 635         final String[] filters = filter.trim().toLowerCase().split("(\\s|-)+");
 636         setListAdapter(new MyListAdapter(filters));
 637     }
 638
 639     private View createDictionaryRow(final DictionaryInfo dictionaryInfo,
 640                                      final ViewGroup parent, boolean canLaunch) {
 641
 642         View row = LayoutInflater.from(parent.getContext()).inflate(
 643                        R.layout.dictionary_manager_row, parent, false);
 644         final TextView name = (TextView) row.findViewById(R.id.dictionaryName);
 645         final TextView details = (TextView) row.findViewById(R.id.dictionaryDetails);
 646         name.setText(application.getDictionaryName(dictionaryInfo.uncompressedFilename));
 647
 648         final boolean updateAvailable = application.updateAvailable(dictionaryInfo);
 649         final Button downloadButton = (Button) row.findViewById(R.id.downloadButton);
 650         final DictionaryInfo downloadable = application.getDownloadable(dictionaryInfo.uncompressedFilename);
 651         boolean broken = false;
 652         if (!dictionaryInfo.isValid()) {
 653             broken = true;
 654             canLaunch = false;
 655         }
 656         if (downloadable != null && (!canLaunch || updateAvailable)) {
 657             downloadButton
 658             .setText(getString(
 659                          R.string.downloadButton,
 660                          downloadable.zipBytes / 1024.0 / 1024.0));
 661             downloadButton.setMinWidth(application.languageButtonPixels * 3 / 2);
 662             downloadButton.setOnClickListener(new OnClickListener() {
 663                 @Override
 664                 public void onClick(View arg0) {
 665                     downloadDictionary(downloadable.downloadUrl, downloadable.zipBytes, downloadButton);
 666                 }
 667             });
 668         } else {
 669             downloadButton.setVisibility(View.INVISIBLE);
 670         }
 671
 672         LinearLayout buttons = (LinearLayout) row.findViewById(R.id.dictionaryLauncherButtons);
 673         final List<IndexInfo> sortedIndexInfos = application
 674                 .sortedIndexInfos(dictionaryInfo.indexInfos);
 675         final StringBuilder builder = new StringBuilder();
 676         if (updateAvailable) {
 677             builder.append(getString(R.string.updateAvailable));
 678         }
 679         for (IndexInfo indexInfo : sortedIndexInfos) {
 680             final View button = IsoUtils.INSTANCE.createButton(buttons.getContext(), dictionaryInfo,
 681                                 indexInfo, application.languageButtonPixels);
 682             buttons.addView(button);
 683
 684             if (canLaunch) {
 685                 button.setOnClickListener(
 686                     new IntentLauncher(buttons.getContext(),
 687                                        DictionaryActivity.getLaunchIntent(getApplicationContext(),
 688                                                application.getPath(dictionaryInfo.uncompressedFilename),
 689                                                indexInfo.shortName, "")));
 690
 691             } else {
 692                 button.setEnabled(false);
 693                 button.setFocusable(false);
 694             }
 695             if (builder.length() != 0) {
 696                 builder.append("; ");
 697             }
 698             builder.append(getString(R.string.indexInfo, indexInfo.shortName,
 699                                      indexInfo.mainTokenCount));
 700         }
 701         builder.append("; ");
 702         builder.append(getString(R.string.downloadButton, dictionaryInfo.uncompressedBytes / 1024.0 / 1024.0));
 703         if (broken) {
 704             name.setText("Broken: " + application.getDictionaryName(dictionaryInfo.uncompressedFilename));
 705             builder.append("; Cannot be used, redownload, check hardware/file system");
 706             // Allow deleting, but cannot open
 707             row.setLongClickable(true);
 708         }
 709         details.setText(builder.toString());
 710
 711         if (canLaunch) {
 712             row.setClickable(true);
 713             row.setOnClickListener(new IntentLauncher(parent.getContext(),
 714                                    DictionaryActivity.getLaunchIntent(getApplicationContext(),
 715                                            application.getPath(dictionaryInfo.uncompressedFilename),
 716                                            dictionaryInfo.indexInfos.get(0).shortName, "")));
 717             // do not setFocusable, for keyboard navigation
 718             // offering only the index buttons is better.
 719             row.setLongClickable(true);
 720         }
 721         row.setBackgroundResource(android.R.drawable.menuitem_background);
 722
 723         return row;
 724     }
 725
 726     private synchronized void downloadDictionary(final String downloadUrl, long bytes, Button downloadButton) {
 727         String destFile;
 728         try {
 729             destFile = new File(new URL(downloadUrl).getPath()).getName();
 730         } catch (MalformedURLException e) {
 731             throw new RuntimeException("Invalid download URL!", e);
 732         }
 733         DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
 734         final DownloadManager.Query query = new DownloadManager.Query();
 735         query.setFilterByStatus(DownloadManager.STATUS_PAUSED | DownloadManager.STATUS_PENDING | DownloadManager.STATUS_RUNNING);
 736         final Cursor cursor = downloadManager.query(query);
 737
 738         // Due to a bug, cursor is null instead of empty when
 739         // the download manager is disabled.
 740         if (cursor == null) {
 741             String msg = getString(R.string.downloadManagerQueryFailed);
 742             new AlertDialog.Builder(DictionaryManagerActivity.this).setTitle(getString(R.string.error))
 743             .setMessage(getString(R.string.downloadFailed, msg))
 744             .setNeutralButton("Close", null).show();
 745             return;
 746         }
 747
 748         while (cursor.moveToNext()) {
 749             if (downloadUrl.equals(cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_URI))))
 750                 break;
 751             if (destFile.equals(cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_TITLE))))
 752                 break;
 753         }
 754         if (!cursor.isAfterLast()) {
 755             downloadManager.remove(cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_ID)));
 756             downloadButton
 757             .setText(getString(
 758                          R.string.downloadButton,
 759                          bytes / 1024.0 / 1024.0));
 760             cursor.close();
 761             return;
 762         }
 763         cursor.close();
 764         Request request = new Request(
 765             Uri.parse(downloadUrl));
 766
 767         Log.d(LOG, "Downloading to: " + destFile);
 768         request.setTitle(destFile);
 769
 770         File destFilePath = new File(application.getDictDir(), destFile);
 771         destFilePath.delete();
 772         try {
 773             request.setDestinationUri(Uri.fromFile(destFilePath));
 774         } catch (Exception e) {
 775         }
 776
 777         try {
 778             downloadManager.enqueue(request);
 779         } catch (SecurityException e) {
 780             request = new Request(Uri.parse(downloadUrl));
 781             request.setTitle(destFile);
 782             downloadManager.enqueue(request);
 783         }
 784         Log.w(LOG, "Download started: " + destFile);
 785         downloadButton.setText("X");
 786     }
 787
 788 }