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.Build;
  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.annotation.NonNull;
  37 import android.support.v4.app.ActivityCompat;
  38 import android.support.v4.content.ContextCompat;
  39 import android.support.v4.view.MenuItemCompat;
  40 import android.support.v7.app.ActionBar;
  41 import android.support.v7.app.AppCompatActivity;
  42 import android.support.v7.widget.SearchView;
  43 import android.support.v7.widget.SearchView.OnQueryTextListener;
  44 import android.support.v7.widget.Toolbar;
  45 import android.text.InputType;
  46 import android.util.Log;
  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.widget.AdapterView.AdapterContextMenuInfo;
  57 import android.widget.BaseAdapter;
  58 import android.widget.Button;
  59 import android.widget.CompoundButton;
  60 import android.widget.CompoundButton.OnCheckedChangeListener;
  61 import android.widget.FrameLayout;
  62 import android.widget.ImageButton;
  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.net.MalformedURLException;
  80 import java.net.URL;
  81 import java.nio.ByteBuffer;
  82 import java.nio.channels.FileChannel;
  83 import java.util.Collections;
  84 import java.util.HashSet;
  85 import java.util.List;
  86 import java.util.Set;
  87 import java.util.regex.Pattern;
  88 import java.util.zip.ZipEntry;
  89 import java.util.zip.ZipInputStream;
  90
  91 // Right-click:
  92 //  Delete, move to top.
  93
  94 public class DictionaryManagerActivity extends AppCompatActivity {
  95
  96     private static final String LOG = "QuickDic";
  97     private static boolean blockAutoLaunch = false;
  98
  99     private ListView listView;
 100     private ListView getListView() {
 101         if (listView == null) {
 102             listView = (ListView)findViewById(android.R.id.list);
 103         }
 104         return listView;
 105     }
 106     private void setListAdapter(ListAdapter adapter) {
 107         getListView().setAdapter(adapter);
 108     }
 109     private ListAdapter getListAdapter() {
 110         return getListView().getAdapter();
 111     }
 112
 113     // For DownloadManager bug workaround
 114     private final Set<Long> finishedDownloadIds = new HashSet<>();
 115
 116     private DictionaryApplication application;
 117
 118     private SearchView filterSearchView;
 119     private ToggleButton showDownloadable;
 120
 121     private LinearLayout dictionariesOnDeviceHeaderRow;
 122     private LinearLayout downloadableDictionariesHeaderRow;
 123
 124     private Handler uiHandler;
 125
 126     private final Runnable dictionaryUpdater = new Runnable() {
 127         @Override
 128         public void run() {
 129             if (uiHandler == null) {
 130                 return;
 131             }
 132             uiHandler.post(new Runnable() {
 133                 @Override
 134                 public void run() {
 135                     setMyListAdapter();
 136                 }
 137             });
 138         }
 139     };
 140
 141     private final BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
 142         @Override
 143         public synchronized void onReceive(Context context, Intent intent) {
 144             final String action = intent.getAction();
 145
 146             if (DownloadManager.ACTION_NOTIFICATION_CLICKED.equals(action)) {
 147                 startActivity(DictionaryManagerActivity.getLaunchIntent(getApplicationContext()).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP));
 148             }
 149             if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
 150                 final long downloadId = intent.getLongExtra(
 151                                             DownloadManager.EXTRA_DOWNLOAD_ID, 0);
 152                 if (finishedDownloadIds.contains(downloadId)) return; // ignore double notifications
 153                 final DownloadManager.Query query = new DownloadManager.Query();
 154                 query.setFilterById(downloadId);
 155                 final DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
 156                 final Cursor cursor = downloadManager.query(query);
 157
 158                 if (cursor == null || !cursor.moveToFirst()) {
 159                     Log.e(LOG, "Couldn't find download.");
 160                     return;
 161                 }
 162
 163                 final String dest = cursor
 164                                     .getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));
 165                 final int status = cursor
 166                                    .getInt(cursor
 167                                            .getColumnIndex(DownloadManager.COLUMN_STATUS));
 168                 if (DownloadManager.STATUS_SUCCESSFUL != status) {
 169                     final int reason = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_REASON));
 170                     Log.w(LOG,
 171                           "Download failed: status=" + status +
 172                           ", reason=" + reason);
 173                     String msg = Integer.toString(reason);
 174                     switch (reason) {
 175                     case DownloadManager.ERROR_FILE_ALREADY_EXISTS:
 176                         msg = "File exists";
 177                         break;
 178                     case DownloadManager.ERROR_FILE_ERROR:
 179                         msg = "File error";
 180                         break;
 181                     case DownloadManager.ERROR_INSUFFICIENT_SPACE:
 182                         msg = "Not enough space";
 183                         break;
 184                     }
 185                     new AlertDialog.Builder(context).setTitle(getString(R.string.error)).setMessage(getString(R.string.downloadFailed, msg)).setNeutralButton("Close", null).show();
 186                     return;
 187                 }
 188
 189                 Log.w(LOG, "Download finished: " + dest + " Id: " + downloadId);
 190                 if (!isFinishing())
 191                     Toast.makeText(context, getString(R.string.unzippingDictionary, dest),
 192                                    Toast.LENGTH_LONG).show();
 193
 194                 if (unzipInstall(context, Uri.parse(dest), dest, true)) {
 195                     finishedDownloadIds.add(downloadId);
 196                     Log.w(LOG, "Unzipping finished: " + dest + " Id: " + downloadId);
 197                 }
 198             }
 199         }
 200     };
 201
 202     private boolean unzipInstall(Context context, Uri zipUri, String dest, boolean delete) {
 203         File localZipFile = null;
 204         InputStream zipFileStream = null;
 205         ZipInputStream zipFile = null;
 206         FileOutputStream zipOut = null;
 207         boolean result = false;
 208         try {
 209             if (zipUri.getScheme().equals("content")) {
 210                 zipFileStream = context.getContentResolver().openInputStream(zipUri);
 211                 localZipFile = null;
 212             } else {
 213                 localZipFile = new File(zipUri.getPath());
 214                 try {
 215                     zipFileStream = new FileInputStream(localZipFile);
 216                 } catch (Exception e) {
 217                     if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 218                         ActivityCompat.requestPermissions(this,
 219                                                   new String[] {Manifest.permission.READ_EXTERNAL_STORAGE,
 220                                                           Manifest.permission.WRITE_EXTERNAL_STORAGE
 221                                                                }, 0);
 222                         return false;
 223                     }
 224                     throw e;
 225                 }
 226             }
 227             zipFile = new ZipInputStream(new BufferedInputStream(zipFileStream));
 228             ZipEntry zipEntry;
 229             while ((zipEntry = zipFile.getNextEntry()) != null) {
 230                 // Note: this check prevents security issues like accidental path
 231                 // traversal, which unfortunately ZipInputStream has no protection against.
 232                 // So take extra care when changing it.
 233                 if (!Pattern.matches("[-A-Za-z]+\\.quickdic", zipEntry.getName())) {
 234                     Log.w(LOG, "Invalid zip entry: " + zipEntry.getName());
 235                     continue;
 236                 }
 237                 Log.d(LOG, "Unzipping entry: " + zipEntry.getName());
 238                 File targetFile = new File(application.getDictDir(), zipEntry.getName());
 239                 if (targetFile.exists()) {
 240                     targetFile.renameTo(new File(targetFile.getAbsolutePath().replace(".quickdic", ".bak.quickdic")));
 241                     targetFile = new File(application.getDictDir(), zipEntry.getName());
 242                 }
 243                 zipOut = new FileOutputStream(targetFile);
 244                 copyStream(zipFile, zipOut);
 245             }
 246             application.backgroundUpdateDictionaries(dictionaryUpdater);
 247             if (!isFinishing())
 248                 Toast.makeText(context, getString(R.string.installationFinished, dest),
 249                                Toast.LENGTH_LONG).show();
 250             result = true;
 251         } catch (Exception e) {
 252             String msg = getString(R.string.unzippingFailed, dest + ": " + e.getMessage());
 253             File dir = application.getDictDir();
 254             if (!dir.canWrite() || !DictionaryApplication.checkFileCreate(dir)) {
 255                 msg = getString(R.string.notWritable, dir.getAbsolutePath());
 256             }
 257             new AlertDialog.Builder(context).setTitle(getString(R.string.error)).setMessage(msg).setNeutralButton("Close", null).show();
 258             Log.e(LOG, "Failed to unzip.", e);
 259         } finally {
 260             try {
 261                 if (zipOut != null) zipOut.close();
 262             } catch (IOException ignored) {}
 263             try {
 264                 if (zipFile != null) zipFile.close();
 265             } catch (IOException ignored) {}
 266             try {
 267                 if (zipFileStream != null) zipFileStream.close();
 268             } catch (IOException ignored) {}
 269             if (localZipFile != null && delete) //noinspection ResultOfMethodCallIgnored
 270                 localZipFile.delete();
 271         }
 272         return result;
 273     }
 274
 275     public static Intent getLaunchIntent(Context c) {
 276         final Intent intent = new Intent(c, DictionaryManagerActivity.class);
 277         intent.putExtra(C.CAN_AUTO_LAUNCH_DICT, false);
 278         return intent;
 279     }
 280
 281     private void readableCheckAndError(boolean requestPermission) {
 282         final File dictDir = application.getDictDir();
 283         if (dictDir.canRead() && dictDir.canExecute()) return;
 284         blockAutoLaunch = true;
 285         if (requestPermission &&
 286                 ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 287             ActivityCompat.requestPermissions(this,
 288                                               new String[] {Manifest.permission.READ_EXTERNAL_STORAGE,
 289                                                       Manifest.permission.WRITE_EXTERNAL_STORAGE
 290                                                            }, 0);
 291             return;
 292         }
 293         blockAutoLaunch = true;
 294
 295         AlertDialog.Builder builder = new AlertDialog.Builder(getListView().getContext());
 296         builder.setTitle(getString(R.string.error));
 297         builder.setMessage(getString(
 298                                R.string.unableToReadDictionaryDir,
 299                                dictDir.getAbsolutePath(),
 300                                Environment.getExternalStorageDirectory()));
 301         builder.setNeutralButton("Close", null);
 302         builder.create().show();
 303     }
 304
 305     @Override
 306     public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
 307         readableCheckAndError(false);
 308
 309         application.backgroundUpdateDictionaries(dictionaryUpdater);
 310
 311         setMyListAdapter();
 312     }
 313
 314     @Override
 315     public void onCreate(Bundle savedInstanceState) {
 316         DictionaryApplication.INSTANCE.init(getApplicationContext());
 317         application = DictionaryApplication.INSTANCE;
 318         // This must be first, otherwise the action bar doesn't get
 319         // styled properly.
 320         setTheme(application.getSelectedTheme().themeId);
 321
 322         super.onCreate(savedInstanceState);
 323         Log.d(LOG, "onCreate:" + this);
 324
 325         setTheme(application.getSelectedTheme().themeId);
 326
 327         blockAutoLaunch = false;
 328
 329         // UI init.
 330         setContentView(R.layout.dictionary_manager_activity);
 331
 332         dictionariesOnDeviceHeaderRow = (LinearLayout) LayoutInflater.from(
 333                                             getListView().getContext()).inflate(
 334                                             R.layout.dictionary_manager_header_row_on_device, getListView(), false);
 335
 336         downloadableDictionariesHeaderRow = (LinearLayout) LayoutInflater.from(
 337                                                 getListView().getContext()).inflate(
 338                                                 R.layout.dictionary_manager_header_row_downloadable, getListView(), false);
 339
 340         showDownloadable = downloadableDictionariesHeaderRow
 341                            .findViewById(R.id.hideDownloadable);
 342         showDownloadable.setOnCheckedChangeListener(new OnCheckedChangeListener() {
 343             @Override
 344             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 345                 onShowDownloadableChanged();
 346             }
 347         });
 348
 349         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 350         final String thanksForUpdatingLatestVersion = getString(R.string.thanksForUpdatingVersion);
 351         if (!prefs.getString(C.THANKS_FOR_UPDATING_VERSION, "").equals(
 352                     thanksForUpdatingLatestVersion)) {
 353             blockAutoLaunch = true;
 354             startActivity(HtmlDisplayActivity.getWhatsNewLaunchIntent(getApplicationContext()));
 355             prefs.edit().putString(C.THANKS_FOR_UPDATING_VERSION, thanksForUpdatingLatestVersion)
 356             .commit();
 357         }
 358         IntentFilter downloadManagerIntents = new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE);
 359         downloadManagerIntents.addAction(DownloadManager.ACTION_NOTIFICATION_CLICKED);
 360         registerReceiver(broadcastReceiver, downloadManagerIntents);
 361
 362         setMyListAdapter();
 363         registerForContextMenu(getListView());
 364         getListView().setItemsCanFocus(true);
 365
 366         readableCheckAndError(true);
 367
 368         onCreateSetupActionBar();
 369
 370         final Intent intent = getIntent();
 371         if (intent != null && intent.getAction() != null &&
 372             intent.getAction().equals(Intent.ACTION_VIEW)) {
 373             blockAutoLaunch = true;
 374             Uri uri = intent.getData();
 375             unzipInstall(this, uri, uri.getLastPathSegment(), false);
 376         }
 377     }
 378
 379     private void onCreateSetupActionBar() {
 380         ActionBar actionBar = getSupportActionBar();
 381         actionBar.setDisplayShowTitleEnabled(false);
 382         actionBar.setDisplayShowHomeEnabled(false);
 383         actionBar.setDisplayHomeAsUpEnabled(false);
 384
 385         filterSearchView = new SearchView(getSupportActionBar().getThemedContext());
 386         filterSearchView.setIconifiedByDefault(false);
 387         // filterSearchView.setIconified(false); // puts the magnifying glass in
 388         // the
 389         // wrong place.
 390         filterSearchView.setQueryHint(getString(R.string.searchText));
 391         filterSearchView.setSubmitButtonEnabled(false);
 392         FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.WRAP_CONTENT,
 393                 FrameLayout.LayoutParams.WRAP_CONTENT);
 394         filterSearchView.setLayoutParams(lp);
 395         filterSearchView.setInputType(InputType.TYPE_CLASS_TEXT);
 396         filterSearchView.setImeOptions(
 397             EditorInfo.IME_ACTION_DONE |
 398             EditorInfo.IME_FLAG_NO_EXTRACT_UI |
 399             // EditorInfo.IME_FLAG_NO_FULLSCREEN | // Requires API
 400             // 11
 401             EditorInfo.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
 402
 403         filterSearchView.setOnQueryTextListener(new OnQueryTextListener() {
 404             @Override
 405             public boolean onQueryTextSubmit(String query) {
 406                 filterSearchView.clearFocus();
 407                 return false;
 408             }
 409
 410             @Override
 411             public boolean onQueryTextChange(String filterText) {
 412                 setMyListAdapter();
 413                 return true;
 414             }
 415         });
 416         filterSearchView.setFocusable(true);
 417
 418         actionBar.setCustomView(filterSearchView);
 419         actionBar.setDisplayShowCustomEnabled(true);
 420
 421         // Avoid wasting space on large left inset
 422         Toolbar tb = (Toolbar)filterSearchView.getParent();
 423         tb.setContentInsetsRelative(0, 0);
 424     }
 425
 426     @Override
 427     public void onDestroy() {
 428         super.onDestroy();
 429         unregisterReceiver(broadcastReceiver);
 430     }
 431
 432     private static void copyStream(final InputStream ins, final FileOutputStream outs)
 433     throws IOException {
 434         ByteBuffer buf = ByteBuffer.allocateDirect(1024 * 64);
 435         FileChannel out = outs.getChannel();
 436         int bytesRead;
 437         int pos = 0;
 438         final byte[] bytes = new byte[1024 * 64];
 439         do {
 440             bytesRead = ins.read(bytes, pos, bytes.length - pos);
 441             if (bytesRead != -1) pos += bytesRead;
 442             if (bytesRead == -1 ? pos != 0 : 2*pos >= bytes.length) {
 443                 buf.put(bytes, 0, pos);
 444                 pos = 0;
 445                 buf.flip();
 446                 while (buf.hasRemaining()) out.write(buf);
 447                 buf.clear();
 448             }
 449         } while (bytesRead != -1);
 450     }
 451
 452     @Override
 453     protected void onStart() {
 454         super.onStart();
 455         uiHandler = new Handler();
 456     }
 457
 458     @Override
 459     protected void onStop() {
 460         super.onStop();
 461         uiHandler = null;
 462     }
 463
 464     @Override
 465     protected void onResume() {
 466         super.onResume();
 467
 468         if (PreferenceActivity.prefsMightHaveChanged) {
 469             PreferenceActivity.prefsMightHaveChanged = false;
 470             finish();
 471             startActivity(getIntent());
 472         }
 473
 474         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 475         showDownloadable.setChecked(prefs.getBoolean(C.SHOW_DOWNLOADABLE, true));
 476
 477         if (!blockAutoLaunch &&
 478                 getIntent().getBooleanExtra(C.CAN_AUTO_LAUNCH_DICT, true) &&
 479                 prefs.contains(C.DICT_FILE) &&
 480                 prefs.contains(C.INDEX_SHORT_NAME)) {
 481             Log.d(LOG, "Skipping DictionaryManager, going straight to dictionary.");
 482             startActivity(DictionaryActivity.getLaunchIntent(getApplicationContext(),
 483                           new File(prefs.getString(C.DICT_FILE, "")),
 484                           prefs.getString(C.INDEX_SHORT_NAME, ""),
 485                           ""));
 486             finish();
 487             return;
 488         }
 489
 490         // Remove the active dictionary from the prefs so we won't autolaunch
 491         // next time.
 492         prefs.edit().remove(C.DICT_FILE).remove(C.INDEX_SHORT_NAME).commit();
 493
 494         application.backgroundUpdateDictionaries(dictionaryUpdater);
 495
 496         setMyListAdapter();
 497     }
 498
 499     @Override
 500     public boolean onCreateOptionsMenu(final Menu menu) {
 501         if ("true".equals(Settings.System.getString(getContentResolver(), "firebase.test.lab")))
 502         {
 503             return false; // testing the menu is not very interesting
 504         }
 505         final MenuItem sort = menu.add(getString(R.string.sortDicts));
 506         MenuItemCompat.setShowAsAction(sort, MenuItem.SHOW_AS_ACTION_NEVER);
 507         sort.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
 508             public boolean onMenuItemClick(final MenuItem menuItem) {
 509                 application.sortDictionaries();
 510                 setMyListAdapter();
 511                 return true;
 512             }
 513         });
 514
 515         final MenuItem browserDownload = menu.add(getString(R.string.browserDownload));
 516         MenuItemCompat.setShowAsAction(browserDownload, MenuItem.SHOW_AS_ACTION_NEVER);
 517         browserDownload.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
 518             public boolean onMenuItemClick(final MenuItem menuItem) {
 519                 final Intent intent = new Intent(Intent.ACTION_VIEW);
 520                 intent.setData(Uri
 521                                .parse("https://github.com/rdoeffinger/Dictionary/releases/v0.2-dictionaries"));
 522                 startActivity(intent);
 523                 return false;
 524             }
 525         });
 526
 527         DictionaryApplication.onCreateGlobalOptionsMenu(this, menu);
 528         return true;
 529     }
 530
 531     @Override
 532     public void onCreateContextMenu(final ContextMenu menu, final View view,
 533                                     final ContextMenuInfo menuInfo) {
 534         super.onCreateContextMenu(menu, view, menuInfo);
 535         Log.d(LOG, "onCreateContextMenu, " + menuInfo);
 536
 537         final AdapterContextMenuInfo adapterContextMenuInfo =
 538             (AdapterContextMenuInfo) menuInfo;
 539         final int position = adapterContextMenuInfo.position;
 540         final MyListAdapter.Row row = (MyListAdapter.Row) getListAdapter().getItem(position);
 541
 542         if (row.dictionaryInfo == null) {
 543             return;
 544         }
 545
 546         if (position > 0 && row.onDevice) {
 547             final android.view.MenuItem moveToTopMenuItem =
 548                 menu.add(R.string.moveToTop);
 549             moveToTopMenuItem.setOnMenuItemClickListener(new
 550             android.view.MenuItem.OnMenuItemClickListener() {
 551                 @Override
 552                 public boolean onMenuItemClick(android.view.MenuItem item) {
 553                     application.moveDictionaryToTop(row.dictionaryInfo);
 554                     setMyListAdapter();
 555                     return true;
 556                 }
 557             });
 558         }
 559
 560         if (row.onDevice) {
 561             final android.view.MenuItem deleteMenuItem = menu.add(R.string.deleteDictionary);
 562             deleteMenuItem
 563             .setOnMenuItemClickListener(new android.view.MenuItem.OnMenuItemClickListener() {
 564                 @Override
 565                 public boolean onMenuItemClick(android.view.MenuItem item) {
 566                     application.deleteDictionary(row.dictionaryInfo);
 567                     setMyListAdapter();
 568                     return true;
 569                 }
 570             });
 571         }
 572     }
 573
 574     private void onShowDownloadableChanged() {
 575         setMyListAdapter();
 576         Editor prefs = PreferenceManager.getDefaultSharedPreferences(this).edit();
 577         prefs.putBoolean(C.SHOW_DOWNLOADABLE, showDownloadable.isChecked());
 578         prefs.commit();
 579     }
 580
 581     class MyListAdapter extends BaseAdapter {
 582
 583         final List<DictionaryInfo> dictionariesOnDevice;
 584         final List<DictionaryInfo> downloadableDictionaries;
 585
 586         class Row {
 587             final DictionaryInfo dictionaryInfo;
 588             final boolean onDevice;
 589
 590             private Row(DictionaryInfo dictionaryInfo, boolean onDevice) {
 591                 this.dictionaryInfo = dictionaryInfo;
 592                 this.onDevice = onDevice;
 593             }
 594         }
 595
 596         private MyListAdapter(final String[] filters) {
 597             dictionariesOnDevice = application.getDictionariesOnDevice(filters);
 598             if (showDownloadable.isChecked()) {
 599                 downloadableDictionaries = application.getDownloadableDictionaries(filters);
 600             } else {
 601                 downloadableDictionaries = Collections.emptyList();
 602             }
 603         }
 604
 605         @Override
 606         public int getCount() {
 607             return 2 + dictionariesOnDevice.size() + downloadableDictionaries.size();
 608         }
 609
 610         @Override
 611         public Row getItem(int position) {
 612             if (position == 0) {
 613                 return new Row(null, true);
 614             }
 615             position -= 1;
 616
 617             if (position < dictionariesOnDevice.size()) {
 618                 return new Row(dictionariesOnDevice.get(position), true);
 619             }
 620             position -= dictionariesOnDevice.size();
 621
 622             if (position == 0) {
 623                 return new Row(null, false);
 624             }
 625             position -= 1;
 626
 627             assert position < downloadableDictionaries.size();
 628             return new Row(downloadableDictionaries.get(position), false);
 629         }
 630
 631         @Override
 632         public long getItemId(int position) {
 633             return position;
 634         }
 635
 636         @Override
 637         public int getViewTypeCount() {
 638             return 3;
 639         }
 640
 641         @Override
 642         public int getItemViewType(int position) {
 643             final Row row = getItem(position);
 644             if (row.dictionaryInfo == null) {
 645                 return row.onDevice ? 0 : 1;
 646             }
 647             assert row.dictionaryInfo.indexInfos.size() <= 2;
 648             return 2;
 649         }
 650
 651         @Override
 652         public View getView(int position, View convertView, ViewGroup parent) {
 653             if (convertView == dictionariesOnDeviceHeaderRow ||
 654                 convertView == downloadableDictionariesHeaderRow) {
 655                 return convertView;
 656             }
 657
 658             final Row row = getItem(position);
 659
 660             if (row.dictionaryInfo == null) {
 661                 assert convertView == null;
 662                 return row.onDevice ? dictionariesOnDeviceHeaderRow : downloadableDictionariesHeaderRow;
 663             }
 664             return createDictionaryRow(row.dictionaryInfo, parent, convertView, row.onDevice);
 665         }
 666
 667     }
 668
 669     private void setMyListAdapter() {
 670         final String filter = filterSearchView == null ? "" : filterSearchView.getQuery()
 671                               .toString();
 672         final String[] filters = filter.trim().toLowerCase().split("(\\s|-)+");
 673         setListAdapter(new MyListAdapter(filters));
 674     }
 675
 676     private boolean isDownloadActive(String downloadUrl, boolean cancel) {
 677         DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
 678         final DownloadManager.Query query = new DownloadManager.Query();
 679         query.setFilterByStatus(DownloadManager.STATUS_PAUSED | DownloadManager.STATUS_PENDING | DownloadManager.STATUS_RUNNING);
 680         final Cursor cursor = downloadManager.query(query);
 681
 682         // Due to a bug, cursor is null instead of empty when
 683         // the download manager is disabled.
 684         if (cursor == null) {
 685             if (cancel) {
 686                 String msg = getString(R.string.downloadManagerQueryFailed);
 687                 new AlertDialog.Builder(DictionaryManagerActivity.this).setTitle(getString(R.string.error))
 688                 .setMessage(getString(R.string.downloadFailed, msg))
 689                 .setNeutralButton("Close", null).show();
 690             }
 691             return cancel;
 692         }
 693
 694         String destFile;
 695         try {
 696             destFile = new File(new URL(downloadUrl).getPath()).getName();
 697         } catch (MalformedURLException e) {
 698             throw new RuntimeException("Invalid download URL!", e);
 699         }
 700         while (cursor.moveToNext()) {
 701             if (downloadUrl.equals(cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_URI))))
 702                 break;
 703             if (destFile.equals(cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_TITLE))))
 704                 break;
 705         }
 706         boolean active = !cursor.isAfterLast();
 707         if (active && cancel) {
 708             long downloadId = cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_ID));
 709             finishedDownloadIds.add(downloadId);
 710             downloadManager.remove(downloadId);
 711         }
 712         cursor.close();
 713         return active;
 714     }
 715
 716     private View createDictionaryRow(final DictionaryInfo dictionaryInfo,
 717                                      final ViewGroup parent, View row, boolean canLaunch) {
 718
 719         if (row == null) {
 720             row = LayoutInflater.from(parent.getContext()).inflate(
 721                        R.layout.dictionary_manager_row, parent, false);
 722         }
 723         final TextView name = row.findViewById(R.id.dictionaryName);
 724         final TextView details = row.findViewById(R.id.dictionaryDetails);
 725         name.setText(application.getDictionaryName(dictionaryInfo.uncompressedFilename));
 726
 727         final boolean updateAvailable = application.updateAvailable(dictionaryInfo);
 728         final Button downloadButton = row.findViewById(R.id.downloadButton);
 729         final DictionaryInfo downloadable = application.getDownloadable(dictionaryInfo.uncompressedFilename);
 730         boolean broken = false;
 731         if (!dictionaryInfo.isValid()) {
 732             broken = true;
 733             canLaunch = false;
 734         }
 735         if (downloadable != null && (!canLaunch || updateAvailable)) {
 736             downloadButton
 737             .setText(getString(
 738                          R.string.downloadButton,
 739                          downloadable.zipBytes / 1024.0 / 1024.0));
 740             downloadButton.setMinWidth(application.languageButtonPixels * 3 / 2);
 741             downloadButton.setOnClickListener(new OnClickListener() {
 742                 @Override
 743                 public void onClick(View arg0) {
 744                     downloadDictionary(downloadable.downloadUrl, downloadable.zipBytes, downloadButton);
 745                 }
 746             });
 747             downloadButton.setVisibility(View.VISIBLE);
 748
 749             if (isDownloadActive(downloadable.downloadUrl, false))
 750                 downloadButton.setText("X");
 751         } else {
 752             downloadButton.setVisibility(View.GONE);
 753         }
 754
 755         LinearLayout buttons = row.findViewById(R.id.dictionaryLauncherButtons);
 756
 757         final List<IndexInfo> sortedIndexInfos = application
 758                 .sortedIndexInfos(dictionaryInfo.indexInfos);
 759         final StringBuilder builder = new StringBuilder();
 760         if (updateAvailable) {
 761             builder.append(getString(R.string.updateAvailable));
 762         }
 763         assert buttons.getChildCount() == 4;
 764         for (int i = 0; i < 2; i++) {
 765             final Button textButton = (Button)buttons.getChildAt(2*i);
 766             final ImageButton imageButton = (ImageButton)buttons.getChildAt(2*i + 1);
 767             if (i >= sortedIndexInfos.size()) {
 768                 textButton.setVisibility(View.GONE);
 769                 imageButton.setVisibility(View.GONE);
 770                 continue;
 771             }
 772             final IndexInfo indexInfo = sortedIndexInfos.get(i);
 773             final View button = IsoUtils.INSTANCE.setupButton(textButton, imageButton,
 774                     indexInfo);
 775
 776             if (canLaunch) {
 777                 button.setOnClickListener(
 778                     new IntentLauncher(buttons.getContext(),
 779                                        DictionaryActivity.getLaunchIntent(getApplicationContext(),
 780                                                application.getPath(dictionaryInfo.uncompressedFilename),
 781                                                indexInfo.shortName, "")));
 782
 783             }
 784             button.setEnabled(canLaunch);
 785             button.setFocusable(canLaunch);
 786             if (builder.length() != 0) {
 787                 builder.append("; ");
 788             }
 789             builder.append(getString(R.string.indexInfo, indexInfo.shortName,
 790                                      indexInfo.mainTokenCount));
 791         }
 792         builder.append("; ");
 793         builder.append(getString(R.string.downloadButton, dictionaryInfo.uncompressedBytes / 1024.0 / 1024.0));
 794         if (broken) {
 795             name.setText("Broken: " + application.getDictionaryName(dictionaryInfo.uncompressedFilename));
 796             builder.append("; Cannot be used, redownload, check hardware/file system");
 797         }
 798         details.setText(builder.toString());
 799
 800         if (canLaunch) {
 801             row.setOnClickListener(new IntentLauncher(parent.getContext(),
 802                                    DictionaryActivity.getLaunchIntent(getApplicationContext(),
 803                                            application.getPath(dictionaryInfo.uncompressedFilename),
 804                                            dictionaryInfo.indexInfos.get(0).shortName, "")));
 805             // do not setFocusable, for keyboard navigation
 806             // offering only the index buttons is better.
 807         }
 808         row.setClickable(canLaunch);
 809         // Allow deleting, even if we cannot open
 810         row.setLongClickable(broken || canLaunch);
 811         row.setBackgroundResource(android.R.drawable.menuitem_background);
 812
 813         return row;
 814     }
 815
 816     private synchronized void downloadDictionary(final String downloadUrl, long bytes, Button downloadButton) {
 817         if (isDownloadActive(downloadUrl, true)) {
 818             downloadButton
 819             .setText(getString(
 820                          R.string.downloadButton,
 821                          bytes / 1024.0 / 1024.0));
 822             return;
 823         }
 824         // API 19 and earlier have issues with github URLs, both http and https.
 825         // Really old (~API 10) DownloadManager cannot handle https at all.
 826         // Work around both with in one.
 827         String altUrl = downloadUrl.replace("https://github.com/rdoeffinger/Dictionary/releases/download/v0.2-dictionaries/", "http://ffmpeg.org/~reimar/dict/");
 828         Request request = new Request(Uri.parse(Build.VERSION.SDK_INT < 21 ? altUrl : downloadUrl));
 829
 830         String destFile;
 831         try {
 832             destFile = new File(new URL(downloadUrl).getPath()).getName();
 833         } catch (MalformedURLException e) {
 834             throw new RuntimeException("Invalid download URL!", e);
 835         }
 836         Log.d(LOG, "Downloading to: " + destFile);
 837         request.setTitle(destFile);
 838         File destFilePath = new File(application.getDictDir(), destFile);
 839         destFilePath.delete();
 840         try {
 841             request.setDestinationUri(Uri.fromFile(destFilePath));
 842         } catch (Exception e) {
 843         }
 844
 845         DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
 846
 847         if (downloadManager == null) {
 848             String msg = getString(R.string.downloadManagerQueryFailed);
 849             new AlertDialog.Builder(DictionaryManagerActivity.this).setTitle(getString(R.string.error))
 850                     .setMessage(getString(R.string.downloadFailed, msg))
 851                     .setNeutralButton("Close", null).show();
 852             return;
 853         }
 854
 855         try {
 856             downloadManager.enqueue(request);
 857         } catch (SecurityException e) {
 858             request = new Request(Uri.parse(downloadUrl));
 859             request.setTitle(destFile);
 860             downloadManager.enqueue(request);
 861         }
 862         Log.w(LOG, "Download started: " + destFile);
 863         downloadButton.setText("X");
 864     }
 865
 866 }