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.ImageButton;
  64 import android.widget.LinearLayout;
  65 import android.widget.ListAdapter;
  66 import android.widget.ListView;
  67 import android.widget.TextView;
  68 import android.widget.Toast;
  69 import android.widget.ToggleButton;
  70
  71 import com.hughes.android.dictionary.DictionaryInfo.IndexInfo;
  72 import com.hughes.android.util.IntentLauncher;
  73
  74 import java.io.BufferedInputStream;
  75 import java.io.File;
  76 import java.io.FileInputStream;
  77 import java.io.FileOutputStream;
  78 import java.io.IOException;
  79 import java.io.InputStream;
  80 import java.io.OutputStream;
  81 import java.net.MalformedURLException;
  82 import java.net.URL;
  83 import java.nio.ByteBuffer;
  84 import java.nio.channels.FileChannel;
  85 import java.util.Collections;
  86 import java.util.HashSet;
  87 import java.util.List;
  88 import java.util.Set;
  89 import java.util.zip.ZipEntry;
  90 import java.util.zip.ZipFile;
  91 import java.util.zip.ZipInputStream;
  92
  93 // Right-click:
  94 //  Delete, move to top.
  95
  96 public class DictionaryManagerActivity extends ActionBarActivity {
  97
  98     static final String LOG = "QuickDic";
  99     static boolean blockAutoLaunch = false;
 100
 101     private ListView listView;
 102     private ListView getListView() {
 103         if (listView == null) {
 104             listView = (ListView)findViewById(android.R.id.list);
 105         }
 106         return listView;
 107     }
 108     private void setListAdapter(ListAdapter adapter) {
 109         getListView().setAdapter(adapter);
 110     }
 111     private ListAdapter getListAdapter() {
 112         return getListView().getAdapter();
 113     }
 114
 115     // For DownloadManager bug workaround
 116     private Set<Long> finishedDownloadIds = new HashSet<Long>();
 117
 118     DictionaryApplication application;
 119
 120     SearchView filterSearchView;
 121     ToggleButton showDownloadable;
 122
 123     LinearLayout dictionariesOnDeviceHeaderRow;
 124     LinearLayout downloadableDictionariesHeaderRow;
 125
 126     Handler uiHandler;
 127
 128     Runnable dictionaryUpdater = new Runnable() {
 129         @Override
 130         public void run() {
 131             if (uiHandler == null) {
 132                 return;
 133             }
 134             uiHandler.post(new Runnable() {
 135                 @Override
 136                 public void run() {
 137                     setMyListAdapater();
 138                 }
 139             });
 140         }
 141     };
 142
 143     final BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
 144         @Override
 145         public synchronized void onReceive(Context context, Intent intent) {
 146             final String action = intent.getAction();
 147
 148             if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
 149                 final long downloadId = intent.getLongExtra(
 150                                             DownloadManager.EXTRA_DOWNLOAD_ID, 0);
 151                 if (finishedDownloadIds.contains(downloadId)) return; // ignore double notifications
 152                 final DownloadManager.Query query = new DownloadManager.Query();
 153                 query.setFilterById(downloadId);
 154                 final DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
 155                 final Cursor cursor = downloadManager.query(query);
 156
 157                 if (cursor == null || !cursor.moveToFirst()) {
 158                     Log.e(LOG, "Couldn't find download.");
 159                     return;
 160                 }
 161
 162                 final String dest = cursor
 163                                     .getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));
 164                 final int status = cursor
 165                                    .getInt(cursor
 166                                            .getColumnIndex(DownloadManager.COLUMN_STATUS));
 167                 if (DownloadManager.STATUS_SUCCESSFUL != status) {
 168                     final int reason = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_REASON));
 169                     Log.w(LOG,
 170                           "Download failed: status=" + status +
 171                           ", reason=" + reason);
 172                     String msg = Integer.toString(reason);
 173                     switch (reason) {
 174                     case DownloadManager.ERROR_FILE_ALREADY_EXISTS:
 175                         msg = "File exists";
 176                         break;
 177                     case DownloadManager.ERROR_FILE_ERROR:
 178                         msg = "File error";
 179                         break;
 180                     case DownloadManager.ERROR_INSUFFICIENT_SPACE:
 181                         msg = "Not enough space";
 182                         break;
 183                     }
 184                     new AlertDialog.Builder(context).setTitle(getString(R.string.error)).setMessage(getString(R.string.downloadFailed, msg)).setNeutralButton("Close", null).show();
 185                     return;
 186                 }
 187
 188                 Log.w(LOG, "Download finished: " + dest + " Id: " + downloadId);
 189                 if (!isFinishing())
 190                     Toast.makeText(context, getString(R.string.unzippingDictionary, dest),
 191                                    Toast.LENGTH_LONG).show();
 192
 193                 if (unzipInstall(context, Uri.parse(dest), dest, true)) {
 194                     finishedDownloadIds.add(downloadId);
 195                     Log.w(LOG, "Unzipping finished: " + dest + " Id: " + downloadId);
 196                 }
 197             }
 198         }
 199     };
 200
 201     private boolean unzipInstall(Context context, Uri zipUri, String dest, boolean delete) {
 202         File localZipFile = null;
 203         InputStream zipFileStream = null;
 204         ZipInputStream zipFile = null;
 205         FileOutputStream zipOut = null;
 206         boolean result = false;
 207         try {
 208             if (zipUri.getScheme().equals("content")) {
 209                 zipFileStream = context.getContentResolver().openInputStream(zipUri);
 210                 localZipFile = null;
 211             } else {
 212                 localZipFile = new File(zipUri.getPath());
 213                 try {
 214                     zipFileStream = new FileInputStream(localZipFile);
 215                 } catch (Exception e) {
 216                     if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 217                         ActivityCompat.requestPermissions(this,
 218                                                   new String[] {Manifest.permission.READ_EXTERNAL_STORAGE,
 219                                                           Manifest.permission.WRITE_EXTERNAL_STORAGE
 220                                                                }, 0);
 221                         return false;
 222                     }
 223                     throw e;
 224                 }
 225             }
 226             zipFile = new ZipInputStream(new BufferedInputStream(zipFileStream));
 227             final ZipEntry zipEntry = zipFile.getNextEntry();
 228             Log.d(LOG, "Unzipping entry: " + zipEntry.getName());
 229             File targetFile = new File(application.getDictDir(), zipEntry.getName());
 230             if (targetFile.exists()) {
 231                 targetFile.renameTo(new File(targetFile.getAbsolutePath().replace(".quickdic", ".bak.quickdic")));
 232                 targetFile = new File(application.getDictDir(), zipEntry.getName());
 233             }
 234             zipOut = new FileOutputStream(targetFile);
 235             copyStream(zipFile, zipOut);
 236             application.backgroundUpdateDictionaries(dictionaryUpdater);
 237             if (!isFinishing())
 238                 Toast.makeText(context, getString(R.string.installationFinished, dest),
 239                                Toast.LENGTH_LONG).show();
 240             result = true;
 241         } catch (Exception e) {
 242             String msg = getString(R.string.unzippingFailed, dest + ": " + e.getMessage());
 243             File dir = application.getDictDir();
 244             if (!dir.canWrite() || !DictionaryApplication.checkFileCreate(dir)) {
 245                 msg = getString(R.string.notWritable, dir.getAbsolutePath());
 246             }
 247             new AlertDialog.Builder(context).setTitle(getString(R.string.error)).setMessage(msg).setNeutralButton("Close", null).show();
 248             Log.e(LOG, "Failed to unzip.", e);
 249         } finally {
 250             try {
 251                 if (zipOut != null) zipOut.close();
 252             } catch (IOException e) {}
 253             try {
 254                 if (zipFile != null) zipFile.close();
 255             } catch (IOException e) {}
 256             try {
 257                 if (zipFileStream != null) zipFileStream.close();
 258             } catch (IOException e) {}
 259             if (localZipFile != null && delete) localZipFile.delete();
 260         }
 261         return result;
 262     }
 263
 264     public static Intent getLaunchIntent(Context c) {
 265         final Intent intent = new Intent(c, DictionaryManagerActivity.class);
 266         intent.putExtra(C.CAN_AUTO_LAUNCH_DICT, false);
 267         return intent;
 268     }
 269
 270     public void readableCheckAndError(boolean requestPermission) {
 271         final File dictDir = application.getDictDir();
 272         if (dictDir.canRead() && dictDir.canExecute()) return;
 273         blockAutoLaunch = true;
 274         if (requestPermission &&
 275                 ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 276             ActivityCompat.requestPermissions(this,
 277                                               new String[] {Manifest.permission.READ_EXTERNAL_STORAGE,
 278                                                       Manifest.permission.WRITE_EXTERNAL_STORAGE
 279                                                            }, 0);
 280             return;
 281         }
 282         blockAutoLaunch = true;
 283
 284         AlertDialog.Builder builder = new AlertDialog.Builder(getListView().getContext());
 285         builder.setTitle(getString(R.string.error));
 286         builder.setMessage(getString(
 287                                R.string.unableToReadDictionaryDir,
 288                                dictDir.getAbsolutePath(),
 289                                Environment.getExternalStorageDirectory()));
 290         builder.setNeutralButton("Close", null);
 291         builder.create().show();
 292     }
 293
 294     @Override
 295     public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
 296         readableCheckAndError(false);
 297
 298         application.backgroundUpdateDictionaries(dictionaryUpdater);
 299
 300         setMyListAdapater();
 301     }
 302
 303     @Override
 304     public void onCreate(Bundle savedInstanceState) {
 305         DictionaryApplication.INSTANCE.init(getApplicationContext());
 306         application = DictionaryApplication.INSTANCE;
 307         // This must be first, otherwise the action bar doesn't get
 308         // styled properly.
 309         setTheme(application.getSelectedTheme().themeId);
 310
 311         super.onCreate(savedInstanceState);
 312         Log.d(LOG, "onCreate:" + this);
 313
 314         setTheme(application.getSelectedTheme().themeId);
 315
 316         blockAutoLaunch = false;
 317
 318         // UI init.
 319         setContentView(R.layout.dictionary_manager_activity);
 320
 321         dictionariesOnDeviceHeaderRow = (LinearLayout) LayoutInflater.from(
 322                                             getListView().getContext()).inflate(
 323                                             R.layout.dictionary_manager_header_row_on_device, getListView(), false);
 324
 325         downloadableDictionariesHeaderRow = (LinearLayout) LayoutInflater.from(
 326                                                 getListView().getContext()).inflate(
 327                                                 R.layout.dictionary_manager_header_row_downloadable, getListView(), false);
 328
 329         showDownloadable = downloadableDictionariesHeaderRow
 330                            .findViewById(R.id.hideDownloadable);
 331         showDownloadable.setOnCheckedChangeListener(new OnCheckedChangeListener() {
 332             @Override
 333             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 334                 onShowDownloadableChanged();
 335             }
 336         });
 337
 338         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 339         final String thanksForUpdatingLatestVersion = getString(R.string.thanksForUpdatingVersion);
 340         if (!prefs.getString(C.THANKS_FOR_UPDATING_VERSION, "").equals(
 341                     thanksForUpdatingLatestVersion)) {
 342             blockAutoLaunch = true;
 343             startActivity(HtmlDisplayActivity.getWhatsNewLaunchIntent(getApplicationContext()));
 344             prefs.edit().putString(C.THANKS_FOR_UPDATING_VERSION, thanksForUpdatingLatestVersion)
 345             .commit();
 346         }
 347
 348         registerReceiver(broadcastReceiver, new IntentFilter(
 349                              DownloadManager.ACTION_DOWNLOAD_COMPLETE));
 350
 351         setMyListAdapater();
 352         registerForContextMenu(getListView());
 353         getListView().setItemsCanFocus(true);
 354
 355         readableCheckAndError(true);
 356
 357         onCreateSetupActionBar();
 358
 359         final Intent intent = getIntent();
 360         if (intent != null && intent.getAction() != null &&
 361             intent.getAction().equals(Intent.ACTION_VIEW)) {
 362             blockAutoLaunch = true;
 363             Uri uri = intent.getData();
 364             unzipInstall(this, uri, uri.getLastPathSegment(), false);
 365         }
 366     }
 367
 368     private void onCreateSetupActionBar() {
 369         ActionBar actionBar = getSupportActionBar();
 370         actionBar.setDisplayShowTitleEnabled(false);
 371         actionBar.setDisplayShowHomeEnabled(false);
 372         actionBar.setDisplayHomeAsUpEnabled(false);
 373
 374         filterSearchView = new SearchView(getSupportActionBar().getThemedContext());
 375         filterSearchView.setIconifiedByDefault(false);
 376         // filterSearchView.setIconified(false); // puts the magnifying glass in
 377         // the
 378         // wrong place.
 379         filterSearchView.setQueryHint(getString(R.string.searchText));
 380         filterSearchView.setSubmitButtonEnabled(false);
 381         FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.WRAP_CONTENT,
 382                 FrameLayout.LayoutParams.WRAP_CONTENT);
 383         filterSearchView.setLayoutParams(lp);
 384         filterSearchView.setInputType(InputType.TYPE_CLASS_TEXT);
 385         filterSearchView.setImeOptions(
 386             EditorInfo.IME_ACTION_DONE |
 387             EditorInfo.IME_FLAG_NO_EXTRACT_UI |
 388             // EditorInfo.IME_FLAG_NO_FULLSCREEN | // Requires API
 389             // 11
 390             EditorInfo.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
 391
 392         filterSearchView.setOnQueryTextListener(new OnQueryTextListener() {
 393             @Override
 394             public boolean onQueryTextSubmit(String query) {
 395                 filterSearchView.clearFocus();
 396                 return false;
 397             }
 398
 399             @Override
 400             public boolean onQueryTextChange(String filterText) {
 401                 setMyListAdapater();
 402                 return true;
 403             }
 404         });
 405         filterSearchView.setFocusable(true);
 406
 407         actionBar.setCustomView(filterSearchView);
 408         actionBar.setDisplayShowCustomEnabled(true);
 409
 410         // Avoid wasting space on large left inset
 411         Toolbar tb = (Toolbar)filterSearchView.getParent();
 412         tb.setContentInsetsRelative(0, 0);
 413     }
 414
 415     @Override
 416     public void onDestroy() {
 417         super.onDestroy();
 418         unregisterReceiver(broadcastReceiver);
 419     }
 420
 421     private static void copyStream(final InputStream ins, final FileOutputStream outs)
 422     throws IOException {
 423         ByteBuffer buf = ByteBuffer.allocateDirect(1024 * 64);
 424         FileChannel out = outs.getChannel();
 425         int bytesRead;
 426         int pos = 0;
 427         final byte[] bytes = new byte[1024 * 64];
 428         do {
 429             bytesRead = ins.read(bytes, pos, bytes.length - pos);
 430             if (bytesRead != -1) pos += bytesRead;
 431             if (bytesRead == -1 ? pos != 0 : 2*pos >= bytes.length) {
 432                 buf.put(bytes, 0, pos);
 433                 pos = 0;
 434                 buf.flip();
 435                 while (buf.hasRemaining()) out.write(buf);
 436                 buf.clear();
 437             }
 438         } while (bytesRead != -1);
 439     }
 440
 441     @Override
 442     protected void onStart() {
 443         super.onStart();
 444         uiHandler = new Handler();
 445     }
 446
 447     @Override
 448     protected void onStop() {
 449         super.onStop();
 450         uiHandler = null;
 451     }
 452
 453     @Override
 454     protected void onResume() {
 455         super.onResume();
 456
 457         if (PreferenceActivity.prefsMightHaveChanged) {
 458             PreferenceActivity.prefsMightHaveChanged = false;
 459             finish();
 460             startActivity(getIntent());
 461         }
 462
 463         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 464         showDownloadable.setChecked(prefs.getBoolean(C.SHOW_DOWNLOADABLE, true));
 465
 466         if (!blockAutoLaunch &&
 467                 getIntent().getBooleanExtra(C.CAN_AUTO_LAUNCH_DICT, true) &&
 468                 prefs.contains(C.DICT_FILE) &&
 469                 prefs.contains(C.INDEX_SHORT_NAME)) {
 470             Log.d(LOG, "Skipping DictionaryManager, going straight to dictionary.");
 471             startActivity(DictionaryActivity.getLaunchIntent(getApplicationContext(),
 472                           new File(prefs.getString(C.DICT_FILE, "")),
 473                           prefs.getString(C.INDEX_SHORT_NAME, ""),
 474                           ""));
 475             finish();
 476             return;
 477         }
 478
 479         // Remove the active dictionary from the prefs so we won't autolaunch
 480         // next time.
 481         prefs.edit().remove(C.DICT_FILE).remove(C.INDEX_SHORT_NAME).commit();
 482
 483         application.backgroundUpdateDictionaries(dictionaryUpdater);
 484
 485         setMyListAdapater();
 486     }
 487
 488     @Override
 489     public boolean onCreateOptionsMenu(final Menu menu) {
 490         if ("true".equals(Settings.System.getString(getContentResolver(), "firebase.test.lab")))
 491         {
 492             return false; // testing the menu is not very interesting
 493         }
 494         final MenuItem sort = menu.add(getString(R.string.sortDicts));
 495         MenuItemCompat.setShowAsAction(sort, MenuItem.SHOW_AS_ACTION_NEVER);
 496         sort.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
 497             public boolean onMenuItemClick(final MenuItem menuItem) {
 498                 application.sortDictionaries();
 499                 setMyListAdapater();
 500                 return true;
 501             }
 502         });
 503
 504         final MenuItem browserDownload = menu.add(getString(R.string.browserDownload));
 505         MenuItemCompat.setShowAsAction(browserDownload, MenuItem.SHOW_AS_ACTION_NEVER);
 506         browserDownload.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
 507             public boolean onMenuItemClick(final MenuItem menuItem) {
 508                 final Intent intent = new Intent(Intent.ACTION_VIEW);
 509                 intent.setData(Uri
 510                                .parse("https://github.com/rdoeffinger/Dictionary/releases/v0.2-dictionaries"));
 511                 startActivity(intent);
 512                 return false;
 513             }
 514         });
 515
 516         DictionaryApplication.onCreateGlobalOptionsMenu(this, menu);
 517         return true;
 518     }
 519
 520     @Override
 521     public void onCreateContextMenu(final ContextMenu menu, final View view,
 522                                     final ContextMenuInfo menuInfo) {
 523         super.onCreateContextMenu(menu, view, menuInfo);
 524         Log.d(LOG, "onCreateContextMenu, " + menuInfo);
 525
 526         final AdapterContextMenuInfo adapterContextMenuInfo =
 527             (AdapterContextMenuInfo) menuInfo;
 528         final int position = adapterContextMenuInfo.position;
 529         final MyListAdapter.Row row = (MyListAdapter.Row) getListAdapter().getItem(position);
 530
 531         if (row.dictionaryInfo == null) {
 532             return;
 533         }
 534
 535         if (position > 0 && row.onDevice) {
 536             final android.view.MenuItem moveToTopMenuItem =
 537                 menu.add(R.string.moveToTop);
 538             moveToTopMenuItem.setOnMenuItemClickListener(new
 539             android.view.MenuItem.OnMenuItemClickListener() {
 540                 @Override
 541                 public boolean onMenuItemClick(android.view.MenuItem item) {
 542                     application.moveDictionaryToTop(row.dictionaryInfo);
 543                     setMyListAdapater();
 544                     return true;
 545                 }
 546             });
 547         }
 548
 549         if (row.onDevice) {
 550             final android.view.MenuItem deleteMenuItem = menu.add(R.string.deleteDictionary);
 551             deleteMenuItem
 552             .setOnMenuItemClickListener(new android.view.MenuItem.OnMenuItemClickListener() {
 553                 @Override
 554                 public boolean onMenuItemClick(android.view.MenuItem item) {
 555                     application.deleteDictionary(row.dictionaryInfo);
 556                     setMyListAdapater();
 557                     return true;
 558                 }
 559             });
 560         }
 561     }
 562
 563     private void onShowDownloadableChanged() {
 564         setMyListAdapater();
 565         Editor prefs = PreferenceManager.getDefaultSharedPreferences(this).edit();
 566         prefs.putBoolean(C.SHOW_DOWNLOADABLE, showDownloadable.isChecked());
 567         prefs.commit();
 568     }
 569
 570     class MyListAdapter extends BaseAdapter {
 571
 572         List<DictionaryInfo> dictionariesOnDevice;
 573         List<DictionaryInfo> downloadableDictionaries;
 574
 575         class Row {
 576             DictionaryInfo dictionaryInfo;
 577             boolean onDevice;
 578
 579             private Row(DictionaryInfo dictionaryInfo, boolean onDevice) {
 580                 this.dictionaryInfo = dictionaryInfo;
 581                 this.onDevice = onDevice;
 582             }
 583         }
 584
 585         private MyListAdapter(final String[] filters) {
 586             dictionariesOnDevice = application.getDictionariesOnDevice(filters);
 587             if (showDownloadable.isChecked()) {
 588                 downloadableDictionaries = application.getDownloadableDictionaries(filters);
 589             } else {
 590                 downloadableDictionaries = Collections.emptyList();
 591             }
 592         }
 593
 594         @Override
 595         public int getCount() {
 596             return 2 + dictionariesOnDevice.size() + downloadableDictionaries.size();
 597         }
 598
 599         @Override
 600         public Row getItem(int position) {
 601             if (position == 0) {
 602                 return new Row(null, true);
 603             }
 604             position -= 1;
 605
 606             if (position < dictionariesOnDevice.size()) {
 607                 return new Row(dictionariesOnDevice.get(position), true);
 608             }
 609             position -= dictionariesOnDevice.size();
 610
 611             if (position == 0) {
 612                 return new Row(null, false);
 613             }
 614             position -= 1;
 615
 616             assert position < downloadableDictionaries.size();
 617             return new Row(downloadableDictionaries.get(position), false);
 618         }
 619
 620         @Override
 621         public long getItemId(int position) {
 622             return position;
 623         }
 624
 625         @Override
 626         public int getViewTypeCount() {
 627             return 3;
 628         }
 629
 630         @Override
 631         public int getItemViewType(int position) {
 632             final Row row = getItem(position);
 633             if (row.dictionaryInfo == null) {
 634                 return row.onDevice ? 0 : 1;
 635             }
 636             assert row.dictionaryInfo.indexInfos.size() <= 2;
 637             return 2;
 638         }
 639
 640         @Override
 641         public View getView(int position, View convertView, ViewGroup parent) {
 642             if (convertView == dictionariesOnDeviceHeaderRow ||
 643                 convertView == downloadableDictionariesHeaderRow) {
 644                 return convertView;
 645             }
 646
 647             final Row row = getItem(position);
 648
 649             if (row.dictionaryInfo == null) {
 650                 assert convertView == null;
 651                 return row.onDevice ? dictionariesOnDeviceHeaderRow : downloadableDictionariesHeaderRow;
 652             }
 653             return createDictionaryRow(row.dictionaryInfo, parent, convertView, row.onDevice);
 654         }
 655
 656     }
 657
 658     private void setMyListAdapater() {
 659         final String filter = filterSearchView == null ? "" : filterSearchView.getQuery()
 660                               .toString();
 661         final String[] filters = filter.trim().toLowerCase().split("(\\s|-)+");
 662         setListAdapter(new MyListAdapter(filters));
 663     }
 664
 665     private View createDictionaryRow(final DictionaryInfo dictionaryInfo,
 666                                      final ViewGroup parent, View row, boolean canLaunch) {
 667
 668         if (row == null) {
 669             row = LayoutInflater.from(parent.getContext()).inflate(
 670                        R.layout.dictionary_manager_row, parent, false);
 671         }
 672         final TextView name = row.findViewById(R.id.dictionaryName);
 673         final TextView details = row.findViewById(R.id.dictionaryDetails);
 674         name.setText(application.getDictionaryName(dictionaryInfo.uncompressedFilename));
 675
 676         final boolean updateAvailable = application.updateAvailable(dictionaryInfo);
 677         final Button downloadButton = row.findViewById(R.id.downloadButton);
 678         final DictionaryInfo downloadable = application.getDownloadable(dictionaryInfo.uncompressedFilename);
 679         boolean broken = false;
 680         if (!dictionaryInfo.isValid()) {
 681             broken = true;
 682             canLaunch = false;
 683         }
 684         if (downloadable != null && (!canLaunch || updateAvailable)) {
 685             downloadButton
 686             .setText(getString(
 687                          R.string.downloadButton,
 688                          downloadable.zipBytes / 1024.0 / 1024.0));
 689             downloadButton.setMinWidth(application.languageButtonPixels * 3 / 2);
 690             downloadButton.setOnClickListener(new OnClickListener() {
 691                 @Override
 692                 public void onClick(View arg0) {
 693                     downloadDictionary(downloadable.downloadUrl, downloadable.zipBytes, downloadButton);
 694                 }
 695             });
 696             downloadButton.setVisibility(View.VISIBLE);
 697         } else {
 698             downloadButton.setVisibility(View.GONE);
 699         }
 700
 701         LinearLayout buttons = row.findViewById(R.id.dictionaryLauncherButtons);
 702
 703         final List<IndexInfo> sortedIndexInfos = application
 704                 .sortedIndexInfos(dictionaryInfo.indexInfos);
 705         final StringBuilder builder = new StringBuilder();
 706         if (updateAvailable) {
 707             builder.append(getString(R.string.updateAvailable));
 708         }
 709         assert buttons.getChildCount() == 4;
 710         for (int i = 0; i < 2; i++) {
 711             final Button textButton = (Button)buttons.getChildAt(2*i);
 712             final ImageButton imageButton = (ImageButton)buttons.getChildAt(2*i + 1);
 713             if (i >= sortedIndexInfos.size()) {
 714                 textButton.setVisibility(View.GONE);
 715                 imageButton.setVisibility(View.GONE);
 716                 continue;
 717             }
 718             final IndexInfo indexInfo = sortedIndexInfos.get(i);
 719             final View button = IsoUtils.INSTANCE.setupButton(textButton, imageButton, dictionaryInfo,
 720                                 indexInfo, application.languageButtonPixels);
 721
 722             if (canLaunch) {
 723                 button.setOnClickListener(
 724                     new IntentLauncher(buttons.getContext(),
 725                                        DictionaryActivity.getLaunchIntent(getApplicationContext(),
 726                                                application.getPath(dictionaryInfo.uncompressedFilename),
 727                                                indexInfo.shortName, "")));
 728
 729             }
 730             button.setEnabled(canLaunch);
 731             button.setFocusable(canLaunch);
 732             if (builder.length() != 0) {
 733                 builder.append("; ");
 734             }
 735             builder.append(getString(R.string.indexInfo, indexInfo.shortName,
 736                                      indexInfo.mainTokenCount));
 737         }
 738         builder.append("; ");
 739         builder.append(getString(R.string.downloadButton, dictionaryInfo.uncompressedBytes / 1024.0 / 1024.0));
 740         if (broken) {
 741             name.setText("Broken: " + application.getDictionaryName(dictionaryInfo.uncompressedFilename));
 742             builder.append("; Cannot be used, redownload, check hardware/file system");
 743         }
 744         details.setText(builder.toString());
 745
 746         if (canLaunch) {
 747             row.setOnClickListener(new IntentLauncher(parent.getContext(),
 748                                    DictionaryActivity.getLaunchIntent(getApplicationContext(),
 749                                            application.getPath(dictionaryInfo.uncompressedFilename),
 750                                            dictionaryInfo.indexInfos.get(0).shortName, "")));
 751             // do not setFocusable, for keyboard navigation
 752             // offering only the index buttons is better.
 753         }
 754         row.setClickable(canLaunch);
 755         // Allow deleting, even if we cannot open
 756         row.setLongClickable(broken || canLaunch);
 757         row.setBackgroundResource(android.R.drawable.menuitem_background);
 758
 759         return row;
 760     }
 761
 762     private synchronized void downloadDictionary(final String downloadUrl, long bytes, Button downloadButton) {
 763         String destFile;
 764         try {
 765             destFile = new File(new URL(downloadUrl).getPath()).getName();
 766         } catch (MalformedURLException e) {
 767             throw new RuntimeException("Invalid download URL!", e);
 768         }
 769         DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
 770         final DownloadManager.Query query = new DownloadManager.Query();
 771         query.setFilterByStatus(DownloadManager.STATUS_PAUSED | DownloadManager.STATUS_PENDING | DownloadManager.STATUS_RUNNING);
 772         final Cursor cursor = downloadManager.query(query);
 773
 774         // Due to a bug, cursor is null instead of empty when
 775         // the download manager is disabled.
 776         if (cursor == null) {
 777             String msg = getString(R.string.downloadManagerQueryFailed);
 778             new AlertDialog.Builder(DictionaryManagerActivity.this).setTitle(getString(R.string.error))
 779             .setMessage(getString(R.string.downloadFailed, msg))
 780             .setNeutralButton("Close", null).show();
 781             return;
 782         }
 783
 784         while (cursor.moveToNext()) {
 785             if (downloadUrl.equals(cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_URI))))
 786                 break;
 787             if (destFile.equals(cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_TITLE))))
 788                 break;
 789         }
 790         if (!cursor.isAfterLast()) {
 791             downloadManager.remove(cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_ID)));
 792             downloadButton
 793             .setText(getString(
 794                          R.string.downloadButton,
 795                          bytes / 1024.0 / 1024.0));
 796             cursor.close();
 797             return;
 798         }
 799         cursor.close();
 800         Request request = new Request(
 801             Uri.parse(downloadUrl));
 802
 803         Log.d(LOG, "Downloading to: " + destFile);
 804         request.setTitle(destFile);
 805
 806         File destFilePath = new File(application.getDictDir(), destFile);
 807         destFilePath.delete();
 808         try {
 809             request.setDestinationUri(Uri.fromFile(destFilePath));
 810         } catch (Exception e) {
 811         }
 812
 813         try {
 814             downloadManager.enqueue(request);
 815         } catch (SecurityException e) {
 816             request = new Request(Uri.parse(downloadUrl));
 817             request.setTitle(destFile);
 818             downloadManager.enqueue(request);
 819         }
 820         Log.w(LOG, "Download started: " + destFile);
 821         downloadButton.setText("X");
 822     }
 823
 824 }