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.Context;
  23 import android.content.Intent;
  24 import android.content.IntentFilter;
  25 import android.content.SharedPreferences;
  26 import android.content.SharedPreferences.Editor;
  27 import android.content.pm.PackageManager;
  28 import android.database.Cursor;
  29 import android.net.Uri;
  30 import android.os.Bundle;
  31 import android.os.Environment;
  32 import android.os.Handler;
  33 import android.preference.PreferenceManager;
  34 import android.provider.Settings;
  35 import android.support.annotation.NonNull;
  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.AppCompatActivity;
  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.view.ContextMenu;
  47 import android.view.ContextMenu.ContextMenuInfo;
  48 import android.view.LayoutInflater;
  49 import android.view.Menu;
  50 import android.view.MenuItem;
  51 import android.view.View;
  52 import android.view.View.OnClickListener;
  53 import android.view.ViewGroup;
  54 import android.view.inputmethod.EditorInfo;
  55 import android.widget.AdapterView.AdapterContextMenuInfo;
  56 import android.widget.BaseAdapter;
  57 import android.widget.Button;
  58 import android.widget.CompoundButton;
  59 import android.widget.CompoundButton.OnCheckedChangeListener;
  60 import android.widget.FrameLayout;
  61 import android.widget.ImageButton;
  62 import android.widget.LinearLayout;
  63 import android.widget.ListAdapter;
  64 import android.widget.ListView;
  65 import android.widget.TextView;
  66 import android.widget.Toast;
  67 import android.widget.ToggleButton;
  68
  69 import com.hughes.android.dictionary.DictionaryInfo.IndexInfo;
  70 import com.hughes.android.util.IntentLauncher;
  71
  72 import java.io.BufferedInputStream;
  73 import java.io.File;
  74 import java.io.FileInputStream;
  75 import java.io.FileOutputStream;
  76 import java.io.IOException;
  77 import java.io.InputStream;
  78 import java.net.MalformedURLException;
  79 import java.net.URL;
  80 import java.nio.ByteBuffer;
  81 import java.nio.channels.FileChannel;
  82 import java.util.Collections;
  83 import java.util.HashSet;
  84 import java.util.List;
  85 import java.util.Set;
  86 import java.util.regex.Pattern;
  87 import java.util.zip.ZipEntry;
  88 import java.util.zip.ZipInputStream;
  89
  90 // Right-click:
  91 //  Delete, move to top.
  92
  93 public class DictionaryManagerActivity extends AppCompatActivity {
  94
  95     private static final String LOG = "QuickDic";
  96     private static boolean blockAutoLaunch = false;
  97
  98     private ListView listView;
  99     private ListView getListView() {
 100         if (listView == null) {
 101             listView = (ListView)findViewById(android.R.id.list);
 102         }
 103         return listView;
 104     }
 105     private void setListAdapter(ListAdapter adapter) {
 106         getListView().setAdapter(adapter);
 107     }
 108     private ListAdapter getListAdapter() {
 109         return getListView().getAdapter();
 110     }
 111
 112     // For DownloadManager bug workaround
 113     private final Set<Long> finishedDownloadIds = new HashSet<>();
 114
 115     private DictionaryApplication application;
 116
 117     private SearchView filterSearchView;
 118     private ToggleButton showDownloadable;
 119
 120     private LinearLayout dictionariesOnDeviceHeaderRow;
 121     private LinearLayout downloadableDictionariesHeaderRow;
 122
 123     private Handler uiHandler;
 124
 125     private final Runnable dictionaryUpdater = new Runnable() {
 126         @Override
 127         public void run() {
 128             if (uiHandler == null) {
 129                 return;
 130             }
 131             uiHandler.post(new Runnable() {
 132                 @Override
 133                 public void run() {
 134                     setMyListAdapter();
 135                 }
 136             });
 137         }
 138     };
 139
 140     private final BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
 141         @Override
 142         public synchronized void onReceive(Context context, Intent intent) {
 143             final String action = intent.getAction();
 144
 145             if (DownloadManager.ACTION_NOTIFICATION_CLICKED.equals(action)) {
 146                 startActivity(DictionaryManagerActivity.getLaunchIntent(getApplicationContext()).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP));
 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             ZipEntry zipEntry = null;
 228             while ((zipEntry = zipFile.getNextEntry()) != null) {
 229                 // Note: this check prevents security issues like accidental path
 230                 // traversal, which unfortunately ZipInputStream has no protection against.
 231                 // So take extra care when changing it.
 232                 if (!Pattern.matches("[-A-Za-z]+\\.quickdic", zipEntry.getName())) {
 233                     Log.w(LOG, "Invalid zip entry: " + zipEntry.getName());
 234                     continue;
 235                 }
 236                 Log.d(LOG, "Unzipping entry: " + zipEntry.getName());
 237                 File targetFile = new File(application.getDictDir(), zipEntry.getName());
 238                 if (targetFile.exists()) {
 239                     targetFile.renameTo(new File(targetFile.getAbsolutePath().replace(".quickdic", ".bak.quickdic")));
 240                     targetFile = new File(application.getDictDir(), zipEntry.getName());
 241                 }
 242                 zipOut = new FileOutputStream(targetFile);
 243                 copyStream(zipFile, zipOut);
 244             }
 245             application.backgroundUpdateDictionaries(dictionaryUpdater);
 246             if (!isFinishing())
 247                 Toast.makeText(context, getString(R.string.installationFinished, dest),
 248                                Toast.LENGTH_LONG).show();
 249             result = true;
 250         } catch (Exception e) {
 251             String msg = getString(R.string.unzippingFailed, dest + ": " + e.getMessage());
 252             File dir = application.getDictDir();
 253             if (!dir.canWrite() || !DictionaryApplication.checkFileCreate(dir)) {
 254                 msg = getString(R.string.notWritable, dir.getAbsolutePath());
 255             }
 256             new AlertDialog.Builder(context).setTitle(getString(R.string.error)).setMessage(msg).setNeutralButton("Close", null).show();
 257             Log.e(LOG, "Failed to unzip.", e);
 258         } finally {
 259             try {
 260                 if (zipOut != null) zipOut.close();
 261             } catch (IOException e) {}
 262             try {
 263                 if (zipFile != null) zipFile.close();
 264             } catch (IOException e) {}
 265             try {
 266                 if (zipFileStream != null) zipFileStream.close();
 267             } catch (IOException e) {}
 268             if (localZipFile != null && delete) localZipFile.delete();
 269         }
 270         return result;
 271     }
 272
 273     public static Intent getLaunchIntent(Context c) {
 274         final Intent intent = new Intent(c, DictionaryManagerActivity.class);
 275         intent.putExtra(C.CAN_AUTO_LAUNCH_DICT, false);
 276         return intent;
 277     }
 278
 279     private void readableCheckAndError(boolean requestPermission) {
 280         final File dictDir = application.getDictDir();
 281         if (dictDir.canRead() && dictDir.canExecute()) return;
 282         blockAutoLaunch = true;
 283         if (requestPermission &&
 284                 ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 285             ActivityCompat.requestPermissions(this,
 286                                               new String[] {Manifest.permission.READ_EXTERNAL_STORAGE,
 287                                                       Manifest.permission.WRITE_EXTERNAL_STORAGE
 288                                                            }, 0);
 289             return;
 290         }
 291         blockAutoLaunch = true;
 292
 293         AlertDialog.Builder builder = new AlertDialog.Builder(getListView().getContext());
 294         builder.setTitle(getString(R.string.error));
 295         builder.setMessage(getString(
 296                                R.string.unableToReadDictionaryDir,
 297                                dictDir.getAbsolutePath(),
 298                                Environment.getExternalStorageDirectory()));
 299         builder.setNeutralButton("Close", null);
 300         builder.create().show();
 301     }
 302
 303     @Override
 304     public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
 305         readableCheckAndError(false);
 306
 307         application.backgroundUpdateDictionaries(dictionaryUpdater);
 308
 309         setMyListAdapter();
 310     }
 311
 312     @Override
 313     public void onCreate(Bundle savedInstanceState) {
 314         DictionaryApplication.INSTANCE.init(getApplicationContext());
 315         application = DictionaryApplication.INSTANCE;
 316         // This must be first, otherwise the action bar doesn't get
 317         // styled properly.
 318         setTheme(application.getSelectedTheme().themeId);
 319
 320         super.onCreate(savedInstanceState);
 321         Log.d(LOG, "onCreate:" + this);
 322
 323         setTheme(application.getSelectedTheme().themeId);
 324
 325         blockAutoLaunch = false;
 326
 327         // UI init.
 328         setContentView(R.layout.dictionary_manager_activity);
 329
 330         dictionariesOnDeviceHeaderRow = (LinearLayout) LayoutInflater.from(
 331                                             getListView().getContext()).inflate(
 332                                             R.layout.dictionary_manager_header_row_on_device, getListView(), false);
 333
 334         downloadableDictionariesHeaderRow = (LinearLayout) LayoutInflater.from(
 335                                                 getListView().getContext()).inflate(
 336                                                 R.layout.dictionary_manager_header_row_downloadable, getListView(), false);
 337
 338         showDownloadable = downloadableDictionariesHeaderRow
 339                            .findViewById(R.id.hideDownloadable);
 340         showDownloadable.setOnCheckedChangeListener(new OnCheckedChangeListener() {
 341             @Override
 342             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 343                 onShowDownloadableChanged();
 344             }
 345         });
 346
 347         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 348         final String thanksForUpdatingLatestVersion = getString(R.string.thanksForUpdatingVersion);
 349         if (!prefs.getString(C.THANKS_FOR_UPDATING_VERSION, "").equals(
 350                     thanksForUpdatingLatestVersion)) {
 351             blockAutoLaunch = true;
 352             startActivity(HtmlDisplayActivity.getWhatsNewLaunchIntent(getApplicationContext()));
 353             prefs.edit().putString(C.THANKS_FOR_UPDATING_VERSION, thanksForUpdatingLatestVersion)
 354             .commit();
 355         }
 356         IntentFilter downloadManagerIntents = new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE);
 357         downloadManagerIntents.addAction(DownloadManager.ACTION_NOTIFICATION_CLICKED);
 358         registerReceiver(broadcastReceiver, downloadManagerIntents);
 359
 360         setMyListAdapter();
 361         registerForContextMenu(getListView());
 362         getListView().setItemsCanFocus(true);
 363
 364         readableCheckAndError(true);
 365
 366         onCreateSetupActionBar();
 367
 368         final Intent intent = getIntent();
 369         if (intent != null && intent.getAction() != null &&
 370             intent.getAction().equals(Intent.ACTION_VIEW)) {
 371             blockAutoLaunch = true;
 372             Uri uri = intent.getData();
 373             unzipInstall(this, uri, uri.getLastPathSegment(), false);
 374         }
 375     }
 376
 377     private void onCreateSetupActionBar() {
 378         ActionBar actionBar = getSupportActionBar();
 379         actionBar.setDisplayShowTitleEnabled(false);
 380         actionBar.setDisplayShowHomeEnabled(false);
 381         actionBar.setDisplayHomeAsUpEnabled(false);
 382
 383         filterSearchView = new SearchView(getSupportActionBar().getThemedContext());
 384         filterSearchView.setIconifiedByDefault(false);
 385         // filterSearchView.setIconified(false); // puts the magnifying glass in
 386         // the
 387         // wrong place.
 388         filterSearchView.setQueryHint(getString(R.string.searchText));
 389         filterSearchView.setSubmitButtonEnabled(false);
 390         FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.WRAP_CONTENT,
 391                 FrameLayout.LayoutParams.WRAP_CONTENT);
 392         filterSearchView.setLayoutParams(lp);
 393         filterSearchView.setInputType(InputType.TYPE_CLASS_TEXT);
 394         filterSearchView.setImeOptions(
 395             EditorInfo.IME_ACTION_DONE |
 396             EditorInfo.IME_FLAG_NO_EXTRACT_UI |
 397             // EditorInfo.IME_FLAG_NO_FULLSCREEN | // Requires API
 398             // 11
 399             EditorInfo.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
 400
 401         filterSearchView.setOnQueryTextListener(new OnQueryTextListener() {
 402             @Override
 403             public boolean onQueryTextSubmit(String query) {
 404                 filterSearchView.clearFocus();
 405                 return false;
 406             }
 407
 408             @Override
 409             public boolean onQueryTextChange(String filterText) {
 410                 setMyListAdapter();
 411                 return true;
 412             }
 413         });
 414         filterSearchView.setFocusable(true);
 415
 416         actionBar.setCustomView(filterSearchView);
 417         actionBar.setDisplayShowCustomEnabled(true);
 418
 419         // Avoid wasting space on large left inset
 420         Toolbar tb = (Toolbar)filterSearchView.getParent();
 421         tb.setContentInsetsRelative(0, 0);
 422     }
 423
 424     @Override
 425     public void onDestroy() {
 426         super.onDestroy();
 427         unregisterReceiver(broadcastReceiver);
 428     }
 429
 430     private static void copyStream(final InputStream ins, final FileOutputStream outs)
 431     throws IOException {
 432         ByteBuffer buf = ByteBuffer.allocateDirect(1024 * 64);
 433         FileChannel out = outs.getChannel();
 434         int bytesRead;
 435         int pos = 0;
 436         final byte[] bytes = new byte[1024 * 64];
 437         do {
 438             bytesRead = ins.read(bytes, pos, bytes.length - pos);
 439             if (bytesRead != -1) pos += bytesRead;
 440             if (bytesRead == -1 ? pos != 0 : 2*pos >= bytes.length) {
 441                 buf.put(bytes, 0, pos);
 442                 pos = 0;
 443                 buf.flip();
 444                 while (buf.hasRemaining()) out.write(buf);
 445                 buf.clear();
 446             }
 447         } while (bytesRead != -1);
 448     }
 449
 450     @Override
 451     protected void onStart() {
 452         super.onStart();
 453         uiHandler = new Handler();
 454     }
 455
 456     @Override
 457     protected void onStop() {
 458         super.onStop();
 459         uiHandler = null;
 460     }
 461
 462     @Override
 463     protected void onResume() {
 464         super.onResume();
 465
 466         if (PreferenceActivity.prefsMightHaveChanged) {
 467             PreferenceActivity.prefsMightHaveChanged = false;
 468             finish();
 469             startActivity(getIntent());
 470         }
 471
 472         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 473         showDownloadable.setChecked(prefs.getBoolean(C.SHOW_DOWNLOADABLE, true));
 474
 475         if (!blockAutoLaunch &&
 476                 getIntent().getBooleanExtra(C.CAN_AUTO_LAUNCH_DICT, true) &&
 477                 prefs.contains(C.DICT_FILE) &&
 478                 prefs.contains(C.INDEX_SHORT_NAME)) {
 479             Log.d(LOG, "Skipping DictionaryManager, going straight to dictionary.");
 480             startActivity(DictionaryActivity.getLaunchIntent(getApplicationContext(),
 481                           new File(prefs.getString(C.DICT_FILE, "")),
 482                           prefs.getString(C.INDEX_SHORT_NAME, ""),
 483                           ""));
 484             finish();
 485             return;
 486         }
 487
 488         // Remove the active dictionary from the prefs so we won't autolaunch
 489         // next time.
 490         prefs.edit().remove(C.DICT_FILE).remove(C.INDEX_SHORT_NAME).commit();
 491
 492         application.backgroundUpdateDictionaries(dictionaryUpdater);
 493
 494         setMyListAdapter();
 495     }
 496
 497     @Override
 498     public boolean onCreateOptionsMenu(final Menu menu) {
 499         if ("true".equals(Settings.System.getString(getContentResolver(), "firebase.test.lab")))
 500         {
 501             return false; // testing the menu is not very interesting
 502         }
 503         final MenuItem sort = menu.add(getString(R.string.sortDicts));
 504         MenuItemCompat.setShowAsAction(sort, MenuItem.SHOW_AS_ACTION_NEVER);
 505         sort.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
 506             public boolean onMenuItemClick(final MenuItem menuItem) {
 507                 application.sortDictionaries();
 508                 setMyListAdapter();
 509                 return true;
 510             }
 511         });
 512
 513         final MenuItem browserDownload = menu.add(getString(R.string.browserDownload));
 514         MenuItemCompat.setShowAsAction(browserDownload, MenuItem.SHOW_AS_ACTION_NEVER);
 515         browserDownload.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
 516             public boolean onMenuItemClick(final MenuItem menuItem) {
 517                 final Intent intent = new Intent(Intent.ACTION_VIEW);
 518                 intent.setData(Uri
 519                                .parse("https://github.com/rdoeffinger/Dictionary/releases/v0.2-dictionaries"));
 520                 startActivity(intent);
 521                 return false;
 522             }
 523         });
 524
 525         DictionaryApplication.onCreateGlobalOptionsMenu(this, menu);
 526         return true;
 527     }
 528
 529     @Override
 530     public void onCreateContextMenu(final ContextMenu menu, final View view,
 531                                     final ContextMenuInfo menuInfo) {
 532         super.onCreateContextMenu(menu, view, menuInfo);
 533         Log.d(LOG, "onCreateContextMenu, " + menuInfo);
 534
 535         final AdapterContextMenuInfo adapterContextMenuInfo =
 536             (AdapterContextMenuInfo) menuInfo;
 537         final int position = adapterContextMenuInfo.position;
 538         final MyListAdapter.Row row = (MyListAdapter.Row) getListAdapter().getItem(position);
 539
 540         if (row.dictionaryInfo == null) {
 541             return;
 542         }
 543
 544         if (position > 0 && row.onDevice) {
 545             final android.view.MenuItem moveToTopMenuItem =
 546                 menu.add(R.string.moveToTop);
 547             moveToTopMenuItem.setOnMenuItemClickListener(new
 548             android.view.MenuItem.OnMenuItemClickListener() {
 549                 @Override
 550                 public boolean onMenuItemClick(android.view.MenuItem item) {
 551                     application.moveDictionaryToTop(row.dictionaryInfo);
 552                     setMyListAdapter();
 553                     return true;
 554                 }
 555             });
 556         }
 557
 558         if (row.onDevice) {
 559             final android.view.MenuItem deleteMenuItem = menu.add(R.string.deleteDictionary);
 560             deleteMenuItem
 561             .setOnMenuItemClickListener(new android.view.MenuItem.OnMenuItemClickListener() {
 562                 @Override
 563                 public boolean onMenuItemClick(android.view.MenuItem item) {
 564                     application.deleteDictionary(row.dictionaryInfo);
 565                     setMyListAdapter();
 566                     return true;
 567                 }
 568             });
 569         }
 570     }
 571
 572     private void onShowDownloadableChanged() {
 573         setMyListAdapter();
 574         Editor prefs = PreferenceManager.getDefaultSharedPreferences(this).edit();
 575         prefs.putBoolean(C.SHOW_DOWNLOADABLE, showDownloadable.isChecked());
 576         prefs.commit();
 577     }
 578
 579     class MyListAdapter extends BaseAdapter {
 580
 581         final List<DictionaryInfo> dictionariesOnDevice;
 582         final List<DictionaryInfo> downloadableDictionaries;
 583
 584         class Row {
 585             final DictionaryInfo dictionaryInfo;
 586             final boolean onDevice;
 587
 588             private Row(DictionaryInfo dictionaryInfo, boolean onDevice) {
 589                 this.dictionaryInfo = dictionaryInfo;
 590                 this.onDevice = onDevice;
 591             }
 592         }
 593
 594         private MyListAdapter(final String[] filters) {
 595             dictionariesOnDevice = application.getDictionariesOnDevice(filters);
 596             if (showDownloadable.isChecked()) {
 597                 downloadableDictionaries = application.getDownloadableDictionaries(filters);
 598             } else {
 599                 downloadableDictionaries = Collections.emptyList();
 600             }
 601         }
 602
 603         @Override
 604         public int getCount() {
 605             return 2 + dictionariesOnDevice.size() + downloadableDictionaries.size();
 606         }
 607
 608         @Override
 609         public Row getItem(int position) {
 610             if (position == 0) {
 611                 return new Row(null, true);
 612             }
 613             position -= 1;
 614
 615             if (position < dictionariesOnDevice.size()) {
 616                 return new Row(dictionariesOnDevice.get(position), true);
 617             }
 618             position -= dictionariesOnDevice.size();
 619
 620             if (position == 0) {
 621                 return new Row(null, false);
 622             }
 623             position -= 1;
 624
 625             assert position < downloadableDictionaries.size();
 626             return new Row(downloadableDictionaries.get(position), false);
 627         }
 628
 629         @Override
 630         public long getItemId(int position) {
 631             return position;
 632         }
 633
 634         @Override
 635         public int getViewTypeCount() {
 636             return 3;
 637         }
 638
 639         @Override
 640         public int getItemViewType(int position) {
 641             final Row row = getItem(position);
 642             if (row.dictionaryInfo == null) {
 643                 return row.onDevice ? 0 : 1;
 644             }
 645             assert row.dictionaryInfo.indexInfos.size() <= 2;
 646             return 2;
 647         }
 648
 649         @Override
 650         public View getView(int position, View convertView, ViewGroup parent) {
 651             if (convertView == dictionariesOnDeviceHeaderRow ||
 652                 convertView == downloadableDictionariesHeaderRow) {
 653                 return convertView;
 654             }
 655
 656             final Row row = getItem(position);
 657
 658             if (row.dictionaryInfo == null) {
 659                 assert convertView == null;
 660                 return row.onDevice ? dictionariesOnDeviceHeaderRow : downloadableDictionariesHeaderRow;
 661             }
 662             return createDictionaryRow(row.dictionaryInfo, parent, convertView, row.onDevice);
 663         }
 664
 665     }
 666
 667     private void setMyListAdapter() {
 668         final String filter = filterSearchView == null ? "" : filterSearchView.getQuery()
 669                               .toString();
 670         final String[] filters = filter.trim().toLowerCase().split("(\\s|-)+");
 671         setListAdapter(new MyListAdapter(filters));
 672     }
 673
 674     private boolean isDownloadActive(String downloadUrl, boolean cancel) {
 675         DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
 676         final DownloadManager.Query query = new DownloadManager.Query();
 677         query.setFilterByStatus(DownloadManager.STATUS_PAUSED | DownloadManager.STATUS_PENDING | DownloadManager.STATUS_RUNNING);
 678         final Cursor cursor = downloadManager.query(query);
 679
 680         // Due to a bug, cursor is null instead of empty when
 681         // the download manager is disabled.
 682         if (cursor == null) {
 683             if (cancel) {
 684                 String msg = getString(R.string.downloadManagerQueryFailed);
 685                 new AlertDialog.Builder(DictionaryManagerActivity.this).setTitle(getString(R.string.error))
 686                 .setMessage(getString(R.string.downloadFailed, msg))
 687                 .setNeutralButton("Close", null).show();
 688             }
 689             return cancel;
 690         }
 691
 692         String destFile;
 693         try {
 694             destFile = new File(new URL(downloadUrl).getPath()).getName();
 695         } catch (MalformedURLException e) {
 696             throw new RuntimeException("Invalid download URL!", e);
 697         }
 698         while (cursor.moveToNext()) {
 699             if (downloadUrl.equals(cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_URI))))
 700                 break;
 701             if (destFile.equals(cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_TITLE))))
 702                 break;
 703         }
 704         boolean active = !cursor.isAfterLast();
 705         if (active && cancel) {
 706             long downloadId = cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_ID));
 707             finishedDownloadIds.add(downloadId);
 708             downloadManager.remove(downloadId);
 709         }
 710         cursor.close();
 711         return active;
 712     }
 713
 714     private View createDictionaryRow(final DictionaryInfo dictionaryInfo,
 715                                      final ViewGroup parent, View row, boolean canLaunch) {
 716
 717         if (row == null) {
 718             row = LayoutInflater.from(parent.getContext()).inflate(
 719                        R.layout.dictionary_manager_row, parent, false);
 720         }
 721         final TextView name = row.findViewById(R.id.dictionaryName);
 722         final TextView details = row.findViewById(R.id.dictionaryDetails);
 723         name.setText(application.getDictionaryName(dictionaryInfo.uncompressedFilename));
 724
 725         final boolean updateAvailable = application.updateAvailable(dictionaryInfo);
 726         final Button downloadButton = row.findViewById(R.id.downloadButton);
 727         final DictionaryInfo downloadable = application.getDownloadable(dictionaryInfo.uncompressedFilename);
 728         boolean broken = false;
 729         if (!dictionaryInfo.isValid()) {
 730             broken = true;
 731             canLaunch = false;
 732         }
 733         if (downloadable != null && (!canLaunch || updateAvailable)) {
 734             downloadButton
 735             .setText(getString(
 736                          R.string.downloadButton,
 737                          downloadable.zipBytes / 1024.0 / 1024.0));
 738             downloadButton.setMinWidth(application.languageButtonPixels * 3 / 2);
 739             downloadButton.setOnClickListener(new OnClickListener() {
 740                 @Override
 741                 public void onClick(View arg0) {
 742                     downloadDictionary(downloadable.downloadUrl, downloadable.zipBytes, downloadButton);
 743                 }
 744             });
 745             downloadButton.setVisibility(View.VISIBLE);
 746
 747             if (isDownloadActive(downloadable.downloadUrl, false))
 748                 downloadButton.setText("X");
 749         } else {
 750             downloadButton.setVisibility(View.GONE);
 751         }
 752
 753         LinearLayout buttons = row.findViewById(R.id.dictionaryLauncherButtons);
 754
 755         final List<IndexInfo> sortedIndexInfos = application
 756                 .sortedIndexInfos(dictionaryInfo.indexInfos);
 757         final StringBuilder builder = new StringBuilder();
 758         if (updateAvailable) {
 759             builder.append(getString(R.string.updateAvailable));
 760         }
 761         assert buttons.getChildCount() == 4;
 762         for (int i = 0; i < 2; i++) {
 763             final Button textButton = (Button)buttons.getChildAt(2*i);
 764             final ImageButton imageButton = (ImageButton)buttons.getChildAt(2*i + 1);
 765             if (i >= sortedIndexInfos.size()) {
 766                 textButton.setVisibility(View.GONE);
 767                 imageButton.setVisibility(View.GONE);
 768                 continue;
 769             }
 770             final IndexInfo indexInfo = sortedIndexInfos.get(i);
 771             final View button = IsoUtils.INSTANCE.setupButton(textButton, imageButton,
 772                     indexInfo);
 773
 774             if (canLaunch) {
 775                 button.setOnClickListener(
 776                     new IntentLauncher(buttons.getContext(),
 777                                        DictionaryActivity.getLaunchIntent(getApplicationContext(),
 778                                                application.getPath(dictionaryInfo.uncompressedFilename),
 779                                                indexInfo.shortName, "")));
 780
 781             }
 782             button.setEnabled(canLaunch);
 783             button.setFocusable(canLaunch);
 784             if (builder.length() != 0) {
 785                 builder.append("; ");
 786             }
 787             builder.append(getString(R.string.indexInfo, indexInfo.shortName,
 788                                      indexInfo.mainTokenCount));
 789         }
 790         builder.append("; ");
 791         builder.append(getString(R.string.downloadButton, dictionaryInfo.uncompressedBytes / 1024.0 / 1024.0));
 792         if (broken) {
 793             name.setText("Broken: " + application.getDictionaryName(dictionaryInfo.uncompressedFilename));
 794             builder.append("; Cannot be used, redownload, check hardware/file system");
 795         }
 796         details.setText(builder.toString());
 797
 798         if (canLaunch) {
 799             row.setOnClickListener(new IntentLauncher(parent.getContext(),
 800                                    DictionaryActivity.getLaunchIntent(getApplicationContext(),
 801                                            application.getPath(dictionaryInfo.uncompressedFilename),
 802                                            dictionaryInfo.indexInfos.get(0).shortName, "")));
 803             // do not setFocusable, for keyboard navigation
 804             // offering only the index buttons is better.
 805         }
 806         row.setClickable(canLaunch);
 807         // Allow deleting, even if we cannot open
 808         row.setLongClickable(broken || canLaunch);
 809         row.setBackgroundResource(android.R.drawable.menuitem_background);
 810
 811         return row;
 812     }
 813
 814     private synchronized void downloadDictionary(final String downloadUrl, long bytes, Button downloadButton) {
 815         if (isDownloadActive(downloadUrl, true)) {
 816             downloadButton
 817             .setText(getString(
 818                          R.string.downloadButton,
 819                          bytes / 1024.0 / 1024.0));
 820             return;
 821         }
 822         Request request = new Request(
 823             Uri.parse(downloadUrl));
 824
 825         String destFile;
 826         try {
 827             destFile = new File(new URL(downloadUrl).getPath()).getName();
 828         } catch (MalformedURLException e) {
 829             throw new RuntimeException("Invalid download URL!", e);
 830         }
 831         Log.d(LOG, "Downloading to: " + destFile);
 832         request.setTitle(destFile);
 833         File destFilePath = new File(application.getDictDir(), destFile);
 834         destFilePath.delete();
 835         try {
 836             request.setDestinationUri(Uri.fromFile(destFilePath));
 837         } catch (Exception e) {
 838         }
 839
 840         DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
 841
 842         try {
 843             downloadManager.enqueue(request);
 844         } catch (SecurityException e) {
 845             request = new Request(Uri.parse(downloadUrl));
 846             request.setTitle(destFile);
 847             downloadManager.enqueue(request);
 848         }
 849         Log.w(LOG, "Download started: " + destFile);
 850         downloadButton.setText("X");
 851     }
 852
 853 }