Add Open in Background context menu. https://redmine.stoutner.com/issues/482
[PrivacyBrowser.git] / app / src / main / java / com / stoutner / privacybrowser / activities / MainWebViewActivity.java
1 /*
2  * Copyright © 2015-2019 Soren Stoutner <soren@stoutner.com>.
3  *
4  * Download cookie code contributed 2017 Hendrik Knackstedt.  Copyright assigned to Soren Stoutner <soren@stoutner.com>.
5  *
6  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
7  *
8  * Privacy Browser is free software: you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation, either version 3 of the License, or
11  * (at your option) any later version.
12  *
13  * Privacy Browser is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
20  */
21
22 package com.stoutner.privacybrowser.activities;
23
24 import android.Manifest;
25 import android.annotation.SuppressLint;
26 import android.app.Activity;
27 import android.app.Dialog;
28 import android.app.DownloadManager;
29 import android.app.SearchManager;
30 import android.content.ActivityNotFoundException;
31 import android.content.BroadcastReceiver;
32 import android.content.ClipData;
33 import android.content.ClipboardManager;
34 import android.content.Context;
35 import android.content.Intent;
36 import android.content.IntentFilter;
37 import android.content.SharedPreferences;
38 import android.content.pm.PackageManager;
39 import android.content.res.Configuration;
40 import android.database.Cursor;
41 import android.graphics.Bitmap;
42 import android.graphics.BitmapFactory;
43 import android.graphics.Typeface;
44 import android.graphics.drawable.BitmapDrawable;
45 import android.graphics.drawable.Drawable;
46 import android.net.Uri;
47 import android.net.http.SslCertificate;
48 import android.net.http.SslError;
49 import android.os.Build;
50 import android.os.Bundle;
51 import android.os.Environment;
52 import android.os.Handler;
53 import android.os.Message;
54 import android.preference.PreferenceManager;
55 import android.print.PrintDocumentAdapter;
56 import android.print.PrintManager;
57 import android.text.Editable;
58 import android.text.Spanned;
59 import android.text.TextWatcher;
60 import android.text.style.ForegroundColorSpan;
61 import android.util.Patterns;
62 import android.view.ContextMenu;
63 import android.view.GestureDetector;
64 import android.view.KeyEvent;
65 import android.view.Menu;
66 import android.view.MenuItem;
67 import android.view.MotionEvent;
68 import android.view.View;
69 import android.view.ViewGroup;
70 import android.view.WindowManager;
71 import android.view.inputmethod.InputMethodManager;
72 import android.webkit.CookieManager;
73 import android.webkit.HttpAuthHandler;
74 import android.webkit.SslErrorHandler;
75 import android.webkit.ValueCallback;
76 import android.webkit.WebBackForwardList;
77 import android.webkit.WebChromeClient;
78 import android.webkit.WebResourceResponse;
79 import android.webkit.WebSettings;
80 import android.webkit.WebStorage;
81 import android.webkit.WebView;
82 import android.webkit.WebViewClient;
83 import android.webkit.WebViewDatabase;
84 import android.widget.ArrayAdapter;
85 import android.widget.CursorAdapter;
86 import android.widget.EditText;
87 import android.widget.FrameLayout;
88 import android.widget.ImageView;
89 import android.widget.LinearLayout;
90 import android.widget.ListView;
91 import android.widget.ProgressBar;
92 import android.widget.RadioButton;
93 import android.widget.RelativeLayout;
94 import android.widget.TextView;
95
96 import androidx.annotation.NonNull;
97 import androidx.appcompat.app.ActionBar;
98 import androidx.appcompat.app.ActionBarDrawerToggle;
99 import androidx.appcompat.app.AppCompatActivity;
100 import androidx.appcompat.widget.Toolbar;
101 import androidx.coordinatorlayout.widget.CoordinatorLayout;
102 import androidx.core.app.ActivityCompat;
103 import androidx.core.content.ContextCompat;
104 import androidx.core.view.GravityCompat;
105 import androidx.drawerlayout.widget.DrawerLayout;
106 import androidx.fragment.app.DialogFragment;
107 import androidx.fragment.app.FragmentManager;
108 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
109 import androidx.viewpager.widget.ViewPager;
110
111 import com.google.android.material.appbar.AppBarLayout;
112 import com.google.android.material.floatingactionbutton.FloatingActionButton;
113 import com.google.android.material.navigation.NavigationView;
114 import com.google.android.material.snackbar.Snackbar;
115 import com.google.android.material.tabs.TabLayout;
116
117 import com.stoutner.privacybrowser.BuildConfig;
118 import com.stoutner.privacybrowser.R;
119 import com.stoutner.privacybrowser.adapters.WebViewPagerAdapter;
120 import com.stoutner.privacybrowser.asynctasks.GetHostIpAddresses;
121 import com.stoutner.privacybrowser.asynctasks.PopulateBlocklists;
122 import com.stoutner.privacybrowser.asynctasks.SaveWebpageImage;
123 import com.stoutner.privacybrowser.dialogs.AdConsentDialog;
124 import com.stoutner.privacybrowser.dialogs.CreateBookmarkDialog;
125 import com.stoutner.privacybrowser.dialogs.CreateBookmarkFolderDialog;
126 import com.stoutner.privacybrowser.dialogs.CreateHomeScreenShortcutDialog;
127 import com.stoutner.privacybrowser.dialogs.DownloadFileDialog;
128 import com.stoutner.privacybrowser.dialogs.DownloadImageDialog;
129 import com.stoutner.privacybrowser.dialogs.DownloadLocationPermissionDialog;
130 import com.stoutner.privacybrowser.dialogs.EditBookmarkDialog;
131 import com.stoutner.privacybrowser.dialogs.EditBookmarkFolderDialog;
132 import com.stoutner.privacybrowser.dialogs.HttpAuthenticationDialog;
133 import com.stoutner.privacybrowser.dialogs.PinnedMismatchDialog;
134 import com.stoutner.privacybrowser.dialogs.SaveWebpageImageDialog;
135 import com.stoutner.privacybrowser.dialogs.SslCertificateErrorDialog;
136 import com.stoutner.privacybrowser.dialogs.StoragePermissionDialog;
137 import com.stoutner.privacybrowser.dialogs.UrlHistoryDialog;
138 import com.stoutner.privacybrowser.dialogs.ViewSslCertificateDialog;
139 import com.stoutner.privacybrowser.fragments.WebViewTabFragment;
140 import com.stoutner.privacybrowser.helpers.AdHelper;
141 import com.stoutner.privacybrowser.helpers.BlocklistHelper;
142 import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper;
143 import com.stoutner.privacybrowser.helpers.CheckPinnedMismatchHelper;
144 import com.stoutner.privacybrowser.helpers.DomainsDatabaseHelper;
145 import com.stoutner.privacybrowser.helpers.FileNameHelper;
146 import com.stoutner.privacybrowser.helpers.OrbotProxyHelper;
147 import com.stoutner.privacybrowser.views.NestedScrollWebView;
148
149 import java.io.ByteArrayInputStream;
150 import java.io.ByteArrayOutputStream;
151 import java.io.File;
152 import java.io.IOException;
153 import java.io.UnsupportedEncodingException;
154 import java.net.MalformedURLException;
155 import java.net.URL;
156 import java.net.URLDecoder;
157 import java.net.URLEncoder;
158 import java.util.ArrayList;
159 import java.util.Date;
160 import java.util.HashMap;
161 import java.util.HashSet;
162 import java.util.List;
163 import java.util.Map;
164 import java.util.Set;
165
166 // AppCompatActivity from android.support.v7.app.AppCompatActivity must be used to have access to the SupportActionBar until the minimum API is >= 21.
167 public class MainWebViewActivity extends AppCompatActivity implements CreateBookmarkDialog.CreateBookmarkListener, CreateBookmarkFolderDialog.CreateBookmarkFolderListener,
168         DownloadFileDialog.DownloadFileListener, DownloadImageDialog.DownloadImageListener, DownloadLocationPermissionDialog.DownloadLocationPermissionDialogListener, EditBookmarkDialog.EditBookmarkListener,
169         EditBookmarkFolderDialog.EditBookmarkFolderListener, NavigationView.OnNavigationItemSelectedListener, PinnedMismatchDialog.PinnedMismatchListener, PopulateBlocklists.PopulateBlocklistsListener, SaveWebpageImageDialog.SaveWebpageImageListener,
170         StoragePermissionDialog.StoragePermissionDialogListener, UrlHistoryDialog.NavigateHistoryListener, WebViewTabFragment.NewTabListener {
171
172     // `orbotStatus` is public static so it can be accessed from `OrbotProxyHelper`.  It is also used in `onCreate()`, `onResume()`, and `applyProxyThroughOrbot()`.
173     public static String orbotStatus;
174
175     // The WebView pager adapter is accessed from `HttpAuthenticationDialog`, `PinnedMismatchDialog`, and `SslCertificateErrorDialog`.  It is also used in `onCreate()`, `onResume()`, and `addTab()`.
176     public static WebViewPagerAdapter webViewPagerAdapter;
177
178     // The load URL on restart variables are public static so they can be accessed from `BookmarksActivity`.  They are used in `onRestart()`.
179     public static boolean loadUrlOnRestart;
180     public static String urlToLoadOnRestart;
181
182     // `restartFromBookmarksActivity` is public static so it can be accessed from `BookmarksActivity`.  It is also used in `onRestart()`.
183     public static boolean restartFromBookmarksActivity;
184
185     // `currentBookmarksFolder` is public static so it can be accessed from `BookmarksActivity`.  It is also used in `onCreate()`, `onBackPressed()`, `onCreateBookmark()`, `onCreateBookmarkFolder()`,
186     // `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, and `loadBookmarksFolder()`.
187     public static String currentBookmarksFolder;
188
189     // The user agent constants are public static so they can be accessed from `SettingsFragment`, `DomainsActivity`, and `DomainSettingsFragment`.
190     public final static int UNRECOGNIZED_USER_AGENT = -1;
191     public final static int SETTINGS_WEBVIEW_DEFAULT_USER_AGENT = 1;
192     public final static int SETTINGS_CUSTOM_USER_AGENT = 12;
193     public final static int DOMAINS_SYSTEM_DEFAULT_USER_AGENT = 0;
194     public final static int DOMAINS_WEBVIEW_DEFAULT_USER_AGENT = 2;
195     public final static int DOMAINS_CUSTOM_USER_AGENT = 13;
196
197     // Start activity for result request codes.
198     private final int FILE_UPLOAD_REQUEST_CODE = 0;
199     public final static int BROWSE_SAVE_WEBPAGE_IMAGE_REQUEST_CODE = 1;
200
201
202     // The current WebView is used in `onCreate()`, `onPrepareOptionsMenu()`, `onOptionsItemSelected()`, `onNavigationItemSelected()`, `onRestart()`, `onCreateContextMenu()`, `findPreviousOnPage()`,
203     // `findNextOnPage()`, `closeFindOnPage()`, `loadUrlFromTextBox()`, `onSslMismatchBack()`, `applyProxyThroughOrbot()`, and `applyDomainSettings()`.
204     private NestedScrollWebView currentWebView;
205
206     // `customHeader` is used in `onCreate()`, `onOptionsItemSelected()`, `onCreateContextMenu()`, and `loadUrl()`.
207     private final Map<String, String> customHeaders = new HashMap<>();
208
209     // The search URL is set in `applyProxyThroughOrbot()` and used in `onCreate()`, `onNewIntent()`, `loadURLFromTextBox()`, and `initializeWebView()`.
210     private String searchURL;
211
212     // The options menu is set in `onCreateOptionsMenu()` and used in `onOptionsItemSelected()`, `updatePrivacyIcons()`, and `initializeWebView()`.
213     private Menu optionsMenu;
214
215     // The blocklists are populated in `finishedPopulatingBlocklists()` and accessed from `initializeWebView()`.
216     private ArrayList<List<String[]>> easyList;
217     private ArrayList<List<String[]>> easyPrivacy;
218     private ArrayList<List<String[]>> fanboysAnnoyanceList;
219     private ArrayList<List<String[]>> fanboysSocialList;
220     private ArrayList<List<String[]>> ultraList;
221     private ArrayList<List<String[]>> ultraPrivacy;
222
223     // `webViewDefaultUserAgent` is used in `onCreate()` and `onPrepareOptionsMenu()`.
224     private String webViewDefaultUserAgent;
225
226     // `proxyThroughOrbot` is used in `onRestart()`, `onOptionsItemSelected()`, `applyAppSettings()`, and `applyProxyThroughOrbot()`.
227     private boolean proxyThroughOrbot;
228
229     // The incognito mode is set in `applyAppSettings()` and used in `initializeWebView()`.
230     private boolean incognitoModeEnabled;
231
232     // The full screen browsing mode tracker is set it `applyAppSettings()` and used in `initializeWebView()`.
233     private boolean fullScreenBrowsingModeEnabled;
234
235     // `inFullScreenBrowsingMode` is used in `onCreate()`, `onConfigurationChanged()`, and `applyAppSettings()`.
236     private boolean inFullScreenBrowsingMode;
237
238     // The app bar trackers are set in `applyAppSettings()` and used in `initializeWebView()`.
239     private boolean hideAppBar;
240     private boolean scrollAppBar;
241
242     // The loading new intent tracker is set in `onNewIntent()` and used in `setCurrentWebView()`.
243     private boolean loadingNewIntent;
244
245     // `reapplyDomainSettingsOnRestart` is used in `onCreate()`, `onOptionsItemSelected()`, `onNavigationItemSelected()`, `onRestart()`, and `onAddDomain()`, .
246     private boolean reapplyDomainSettingsOnRestart;
247
248     // `reapplyAppSettingsOnRestart` is used in `onNavigationItemSelected()` and `onRestart()`.
249     private boolean reapplyAppSettingsOnRestart;
250
251     // `displayingFullScreenVideo` is used in `onCreate()` and `onResume()`.
252     private boolean displayingFullScreenVideo;
253
254     // `orbotStatusBroadcastReceiver` is used in `onCreate()` and `onDestroy()`.
255     private BroadcastReceiver orbotStatusBroadcastReceiver;
256
257     // `waitingForOrbot` is used in `onCreate()`, `onResume()`, and `applyProxyThroughOrbot()`.
258     private boolean waitingForOrbot;
259
260     // The action bar drawer toggle is initialized in `onCreate()` and used in `onResume()`.
261     private ActionBarDrawerToggle actionBarDrawerToggle;
262
263     // The color spans are used in `onCreate()` and `highlightUrlText()`.
264     private ForegroundColorSpan redColorSpan;
265     private ForegroundColorSpan initialGrayColorSpan;
266     private ForegroundColorSpan finalGrayColorSpan;
267
268     // The drawer header padding variables are used in `onCreate()` and `onConfigurationChanged()`.
269     private int drawerHeaderPaddingLeftAndRight;
270     private int drawerHeaderPaddingTop;
271     private int drawerHeaderPaddingBottom;
272
273     // `bookmarksDatabaseHelper` is used in `onCreate()`, `onDestroy`, `onOptionsItemSelected()`, `onCreateBookmark()`, `onCreateBookmarkFolder()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`,
274     // and `loadBookmarksFolder()`.
275     private BookmarksDatabaseHelper bookmarksDatabaseHelper;
276
277     // `bookmarksCursor` is used in `onDestroy()`, `onOptionsItemSelected()`, `onCreateBookmark()`, `onCreateBookmarkFolder()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, and `loadBookmarksFolder()`.
278     private Cursor bookmarksCursor;
279
280     // `bookmarksCursorAdapter` is used in `onCreateBookmark()`, `onCreateBookmarkFolder()` `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, and `loadBookmarksFolder()`.
281     private CursorAdapter bookmarksCursorAdapter;
282
283     // `oldFolderNameString` is used in `onCreate()` and `onSaveEditBookmarkFolder()`.
284     private String oldFolderNameString;
285
286     // `fileChooserCallback` is used in `onCreate()` and `onActivityResult()`.
287     private ValueCallback<Uri[]> fileChooserCallback;
288
289     // The default progress view offsets are set in `onCreate()` and used in `initializeWebView()`.
290     private int defaultProgressViewStartOffset;
291     private int defaultProgressViewEndOffset;
292
293     // The swipe refresh layout top padding is used when exiting full screen browsing mode.  It is used in an inner class in `initializeWebView()`.
294     private int swipeRefreshLayoutPaddingTop;
295
296     // The URL sanitizers are set in `applyAppSettings()` and used in `sanitizeUrl()`.
297     private boolean sanitizeGoogleAnalytics;
298     private boolean sanitizeFacebookClickIds;
299     private boolean sanitizeTwitterAmpRedirects;
300
301     // The download strings are used in `onCreate()`, `onRequestPermissionResult()` and `initializeWebView()`.
302     private String downloadUrl;
303     private String downloadContentDisposition;
304     private long downloadContentLength;
305
306     // `downloadImageUrl` is used in `onCreateContextMenu()` and `onRequestPermissionResult()`.
307     private String downloadImageUrl;
308
309     // The save website image file path string is used in `onSaveWebpageImage()` and `onRequestPermissionResult()`
310     private String saveWebsiteImageFilePath;
311
312     // The permission result request codes are used in `onCreateContextMenu()`, `onCloseDownloadLocationPermissionDialog()`, `onRequestPermissionResult()`, `onSaveWebpageImage()`,
313     // `onCloseStoragePermissionDialog()`, and `initializeWebView()`.
314     private final int DOWNLOAD_FILE_REQUEST_CODE = 1;
315     private final int DOWNLOAD_IMAGE_REQUEST_CODE = 2;
316     private final int SAVE_WEBPAGE_IMAGE_REQUEST_CODE = 3;
317
318     @Override
319     // Remove the warning about needing to override `performClick()` when using an `OnTouchListener` with `WebView`.
320     @SuppressLint("ClickableViewAccessibility")
321     protected void onCreate(Bundle savedInstanceState) {
322         if (Build.VERSION.SDK_INT >= 21) {
323             WebView.enableSlowWholeDocumentDraw();
324         }
325
326         // Initialize the default preference values the first time the program is run.  `false` keeps this command from resetting any current preferences back to default.
327         PreferenceManager.setDefaultValues(this, R.xml.preferences, false);
328
329         // Get a handle for the shared preferences.
330         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
331
332         // Get the theme and screenshot preferences.
333         boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false);
334         boolean allowScreenshots = sharedPreferences.getBoolean("allow_screenshots", false);
335
336         // Disable screenshots if not allowed.
337         if (!allowScreenshots) {
338             getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
339         }
340
341         // Set the activity theme.
342         if (darkTheme) {
343             setTheme(R.style.PrivacyBrowserDark);
344         } else {
345             setTheme(R.style.PrivacyBrowserLight);
346         }
347
348         // Run the default commands.
349         super.onCreate(savedInstanceState);
350
351         // Set the content view.
352         setContentView(R.layout.main_framelayout);
353
354         // Get handles for the views that need to be modified.
355         DrawerLayout drawerLayout = findViewById(R.id.drawerlayout);
356         Toolbar toolbar = findViewById(R.id.toolbar);
357         ViewPager webViewPager = findViewById(R.id.webviewpager);
358
359         // Set the action bar.  `SupportActionBar` must be used until the minimum API is >= 21.
360         setSupportActionBar(toolbar);
361
362         // Get a handle for the action bar.
363         ActionBar actionBar = getSupportActionBar();
364
365         // This is needed to get rid of the Android Studio warning that the action bar might be null.
366         assert actionBar != null;
367
368         // Add the custom layout, which shows the URL text bar.
369         actionBar.setCustomView(R.layout.url_app_bar);
370         actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
371
372         // Initially disable the sliding drawers.  They will be enabled once the blocklists are loaded.
373         drawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
374
375         // Create the hamburger icon at the start of the AppBar.
376         actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.open_navigation_drawer, R.string.close_navigation_drawer);
377
378         // Initialize the web view pager adapter.
379         webViewPagerAdapter = new WebViewPagerAdapter(getSupportFragmentManager());
380
381         // Set the pager adapter on the web view pager.
382         webViewPager.setAdapter(webViewPagerAdapter);
383
384         // Store up to 100 tabs in memory.
385         webViewPager.setOffscreenPageLimit(100);
386
387         // Populate the blocklists.
388         new PopulateBlocklists(this, this).execute();
389     }
390
391     @Override
392     protected void onNewIntent(Intent intent) {
393         // Run the default commands.
394         super.onNewIntent(intent);
395
396         // Replace the intent that started the app with this one.
397         setIntent(intent);
398
399         // Process the intent here if Privacy Browser is fully initialized.  If the process has been killed by the system while sitting in the background, this will be handled in `initializeWebView()`.
400         if (ultraPrivacy != null) {
401             // Get the information from the intent.
402             String intentAction = intent.getAction();
403             Uri intentUriData = intent.getData();
404
405             // Determine if this is a web search.
406             boolean isWebSearch = ((intentAction != null) && intentAction.equals(Intent.ACTION_WEB_SEARCH));
407
408             // Only process the URI if it contains data or it is a web search.  If the user pressed the desktop icon after the app was already running the URI will be null.
409             if (intentUriData != null || isWebSearch) {
410                 // Get the shared preferences.
411                 SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
412
413                 // Create a URL string.
414                 String url;
415
416                 // If the intent action is a web search, perform the search.
417                 if (isWebSearch) {
418                     // Create an encoded URL string.
419                     String encodedUrlString;
420
421                     // Sanitize the search input and convert it to a search.
422                     try {
423                         encodedUrlString = URLEncoder.encode(intent.getStringExtra(SearchManager.QUERY), "UTF-8");
424                     } catch (UnsupportedEncodingException exception) {
425                         encodedUrlString = "";
426                     }
427
428                     // Add the base search URL.
429                     url = searchURL + encodedUrlString;
430                 } else {  // The intent should contain a URL.
431                     // Set the intent data as the URL.
432                     url = intentUriData.toString();
433                 }
434
435                 // Add a new tab if specified in the preferences.
436                 if (sharedPreferences.getBoolean("open_intents_in_new_tab", true)) {  // Load the URL in a new tab.
437                     // Set the loading new intent flag.
438                     loadingNewIntent = true;
439
440                     // Add a new tab.
441                     addNewTab(url, true);
442                 } else {  // Load the URL in the current tab.
443                     // Make it so.
444                     loadUrl(url);
445                 }
446
447                 // Get a handle for the drawer layout.
448                 DrawerLayout drawerLayout = findViewById(R.id.drawerlayout);
449
450                 // Close the navigation drawer if it is open.
451                 if (drawerLayout.isDrawerVisible(GravityCompat.START)) {
452                     drawerLayout.closeDrawer(GravityCompat.START);
453                 }
454
455                 // Close the bookmarks drawer if it is open.
456                 if (drawerLayout.isDrawerVisible(GravityCompat.END)) {
457                     drawerLayout.closeDrawer(GravityCompat.END);
458                 }
459             }
460         }
461     }
462
463     @Override
464     public void onRestart() {
465         // Run the default commands.
466         super.onRestart();
467
468         // Make sure Orbot is running if Privacy Browser is proxying through Orbot.
469         if (proxyThroughOrbot) {
470             // Request Orbot to start.  If Orbot is already running no hard will be caused by this request.
471             Intent orbotIntent = new Intent("org.torproject.android.intent.action.START");
472
473             // Send the intent to the Orbot package.
474             orbotIntent.setPackage("org.torproject.android");
475
476             // Make it so.
477             sendBroadcast(orbotIntent);
478         }
479
480         // Apply the app settings if returning from the Settings activity.
481         if (reapplyAppSettingsOnRestart) {
482             // Reset the reapply app settings on restart tracker.
483             reapplyAppSettingsOnRestart = false;
484
485             // Apply the app settings.
486             applyAppSettings();
487         }
488
489         // Apply the domain settings if returning from the settings or domains activity.
490         if (reapplyDomainSettingsOnRestart) {
491             // Reset the reapply domain settings on restart tracker.
492             reapplyDomainSettingsOnRestart = false;
493
494             // Reapply the domain settings for each tab.
495             for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
496                 // Get the WebView tab fragment.
497                 WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
498
499                 // Get the fragment view.
500                 View fragmentView = webViewTabFragment.getView();
501
502                 // Only reload the WebViews if they exist.
503                 if (fragmentView != null) {
504                     // Get the nested scroll WebView from the tab fragment.
505                     NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
506
507                     // Reset the current domain name so the domain settings will be reapplied.
508                     nestedScrollWebView.resetCurrentDomainName();
509
510                     // Reapply the domain settings if the URL is not null, which can happen if an empty tab is active when returning from settings.
511                     if (nestedScrollWebView.getUrl() != null) {
512                         applyDomainSettings(nestedScrollWebView, nestedScrollWebView.getUrl(), false, true);
513                     }
514                 }
515             }
516         }
517
518         // Load the URL on restart (used when loading a bookmark).
519         if (loadUrlOnRestart) {
520             // Load the specified URL.
521             loadUrl(urlToLoadOnRestart);
522
523             // Reset the load on restart tracker.
524             loadUrlOnRestart = false;
525         }
526
527         // Update the bookmarks drawer if returning from the Bookmarks activity.
528         if (restartFromBookmarksActivity) {
529             // Get a handle for the drawer layout.
530             DrawerLayout drawerLayout = findViewById(R.id.drawerlayout);
531
532             // Close the bookmarks drawer.
533             drawerLayout.closeDrawer(GravityCompat.END);
534
535             // Reload the bookmarks drawer.
536             loadBookmarksFolder();
537
538             // Reset `restartFromBookmarksActivity`.
539             restartFromBookmarksActivity = false;
540         }
541
542         // Update the privacy icon.  `true` runs `invalidateOptionsMenu` as the last step.  This can be important if the screen was rotated.
543         updatePrivacyIcons(true);
544     }
545
546     // `onResume()` runs after `onStart()`, which runs after `onCreate()` and `onRestart()`.
547     @Override
548     public void onResume() {
549         // Run the default commands.
550         super.onResume();
551
552         for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
553             // Get the WebView tab fragment.
554             WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
555
556             // Get the fragment view.
557             View fragmentView = webViewTabFragment.getView();
558
559             // Only resume the WebViews if they exist (they won't when the app is first created).
560             if (fragmentView != null) {
561                 // Get the nested scroll WebView from the tab fragment.
562                 NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
563
564                 // Resume the nested scroll WebView JavaScript timers.
565                 nestedScrollWebView.resumeTimers();
566
567                 // Resume the nested scroll WebView.
568                 nestedScrollWebView.onResume();
569             }
570         }
571
572         // Display a message to the user if waiting for Orbot.
573         if (waitingForOrbot && !orbotStatus.equals("ON")) {
574             // Disable the wide view port so that the waiting for Orbot text is displayed correctly.
575             currentWebView.getSettings().setUseWideViewPort(false);
576
577             // Load a waiting page.  `null` specifies no encoding, which defaults to ASCII.
578             currentWebView.loadData("<html><body><br/><center><h1>" + getString(R.string.waiting_for_orbot) + "</h1></center></body></html>", "text/html", null);
579         }
580
581         if (displayingFullScreenVideo || inFullScreenBrowsingMode) {
582             // Get a handle for the root frame layouts.
583             FrameLayout rootFrameLayout = findViewById(R.id.root_framelayout);
584
585             // Remove the translucent status flag.  This is necessary so the root frame layout can fill the entire screen.
586             getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
587
588             /* Hide the system bars.
589              * SYSTEM_UI_FLAG_FULLSCREEN hides the status bar at the top of the screen.
590              * SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN makes the root frame layout fill the area that is normally reserved for the status bar.
591              * SYSTEM_UI_FLAG_HIDE_NAVIGATION hides the navigation bar on the bottom or right of the screen.
592              * SYSTEM_UI_FLAG_IMMERSIVE_STICKY makes the status and navigation bars translucent and automatically re-hides them after they are shown.
593              */
594             rootFrameLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
595                     View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
596         } else if (BuildConfig.FLAVOR.contentEquals("free")) {  // Resume the adView for the free flavor.
597             // Resume the ad.
598             AdHelper.resumeAd(findViewById(R.id.adview));
599         }
600     }
601
602     @Override
603     public void onPause() {
604         // Run the default commands.
605         super.onPause();
606
607         for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
608             // Get the WebView tab fragment.
609             WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
610
611             // Get the fragment view.
612             View fragmentView = webViewTabFragment.getView();
613
614             // Only pause the WebViews if they exist (they won't when the app is first created).
615             if (fragmentView != null) {
616                 // Get the nested scroll WebView from the tab fragment.
617                 NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
618
619                 // Pause the nested scroll WebView.
620                 nestedScrollWebView.onPause();
621
622                 // Pause the nested scroll WebView JavaScript timers.
623                 nestedScrollWebView.pauseTimers();
624             }
625         }
626
627         // Pause the ad or it will continue to consume resources in the background on the free flavor.
628         if (BuildConfig.FLAVOR.contentEquals("free")) {
629             // Pause the ad.
630             AdHelper.pauseAd(findViewById(R.id.adview));
631         }
632     }
633
634     @Override
635     public void onDestroy() {
636         // Unregister the Orbot status broadcast receiver.
637         this.unregisterReceiver(orbotStatusBroadcastReceiver);
638
639         // Close the bookmarks cursor and database.
640         bookmarksCursor.close();
641         bookmarksDatabaseHelper.close();
642
643         // Run the default commands.
644         super.onDestroy();
645     }
646
647     @Override
648     public boolean onCreateOptionsMenu(Menu menu) {
649         // Inflate the menu.  This adds items to the action bar if it is present.
650         getMenuInflater().inflate(R.menu.webview_options_menu, menu);
651
652         // Store a handle for the options menu so it can be used by `onOptionsItemSelected()` and `updatePrivacyIcons()`.
653         optionsMenu = menu;
654
655         // Set the initial status of the privacy icons.  `false` does not call `invalidateOptionsMenu` as the last step.
656         updatePrivacyIcons(false);
657
658         // Get handles for the menu items.
659         MenuItem toggleFirstPartyCookiesMenuItem = menu.findItem(R.id.toggle_first_party_cookies);
660         MenuItem toggleThirdPartyCookiesMenuItem = menu.findItem(R.id.toggle_third_party_cookies);
661         MenuItem toggleDomStorageMenuItem = menu.findItem(R.id.toggle_dom_storage);
662         MenuItem toggleSaveFormDataMenuItem = menu.findItem(R.id.toggle_save_form_data);  // Form data can be removed once the minimum API >= 26.
663         MenuItem clearFormDataMenuItem = menu.findItem(R.id.clear_form_data);  // Form data can be removed once the minimum API >= 26.
664         MenuItem refreshMenuItem = menu.findItem(R.id.refresh);
665         MenuItem adConsentMenuItem = menu.findItem(R.id.ad_consent);
666
667         // Only display third-party cookies if API >= 21
668         toggleThirdPartyCookiesMenuItem.setVisible(Build.VERSION.SDK_INT >= 21);
669
670         // Only display the form data menu items if the API < 26.
671         toggleSaveFormDataMenuItem.setVisible(Build.VERSION.SDK_INT < 26);
672         clearFormDataMenuItem.setVisible(Build.VERSION.SDK_INT < 26);
673
674         // Disable the clear form data menu item if the API >= 26 so that the status of the main Clear Data is calculated correctly.
675         clearFormDataMenuItem.setEnabled(Build.VERSION.SDK_INT < 26);
676
677         // Only show Ad Consent if this is the free flavor.
678         adConsentMenuItem.setVisible(BuildConfig.FLAVOR.contentEquals("free"));
679
680         // Get the shared preferences.
681         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
682
683         // Get the dark theme and app bar preferences..
684         boolean displayAdditionalAppBarIcons = sharedPreferences.getBoolean("display_additional_app_bar_icons", false);
685         boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false);
686
687         // Set the status of the additional app bar icons.  Setting the refresh menu item to `SHOW_AS_ACTION_ALWAYS` makes it appear even on small devices like phones.
688         if (displayAdditionalAppBarIcons) {
689             toggleFirstPartyCookiesMenuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
690             toggleDomStorageMenuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
691             refreshMenuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
692         } else { //Do not display the additional icons.
693             toggleFirstPartyCookiesMenuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
694             toggleDomStorageMenuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
695             refreshMenuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
696         }
697
698         // Replace Refresh with Stop if a URL is already loading.
699         if (currentWebView != null && currentWebView.getProgress() != 100) {
700             // Set the title.
701             refreshMenuItem.setTitle(R.string.stop);
702
703             // If the icon is displayed in the AppBar, set it according to the theme.
704             if (displayAdditionalAppBarIcons) {
705                 if (darkTheme) {
706                     refreshMenuItem.setIcon(R.drawable.close_dark);
707                 } else {
708                     refreshMenuItem.setIcon(R.drawable.close_light);
709                 }
710             }
711         }
712
713         // Done.
714         return true;
715     }
716
717     @Override
718     public boolean onPrepareOptionsMenu(Menu menu) {
719         // Get handles for the menu items.
720         MenuItem addOrEditDomain = menu.findItem(R.id.add_or_edit_domain);
721         MenuItem firstPartyCookiesMenuItem = menu.findItem(R.id.toggle_first_party_cookies);
722         MenuItem thirdPartyCookiesMenuItem = menu.findItem(R.id.toggle_third_party_cookies);
723         MenuItem domStorageMenuItem = menu.findItem(R.id.toggle_dom_storage);
724         MenuItem saveFormDataMenuItem = menu.findItem(R.id.toggle_save_form_data);  // Form data can be removed once the minimum API >= 26.
725         MenuItem clearDataMenuItem = menu.findItem(R.id.clear_data);
726         MenuItem clearCookiesMenuItem = menu.findItem(R.id.clear_cookies);
727         MenuItem clearDOMStorageMenuItem = menu.findItem(R.id.clear_dom_storage);
728         MenuItem clearFormDataMenuItem = menu.findItem(R.id.clear_form_data);  // Form data can be removed once the minimum API >= 26.
729         MenuItem blocklistsMenuItem = menu.findItem(R.id.blocklists);
730         MenuItem easyListMenuItem = menu.findItem(R.id.easylist);
731         MenuItem easyPrivacyMenuItem = menu.findItem(R.id.easyprivacy);
732         MenuItem fanboysAnnoyanceListMenuItem = menu.findItem(R.id.fanboys_annoyance_list);
733         MenuItem fanboysSocialBlockingListMenuItem = menu.findItem(R.id.fanboys_social_blocking_list);
734         MenuItem ultraListMenuItem = menu.findItem(R.id.ultralist);
735         MenuItem ultraPrivacyMenuItem = menu.findItem(R.id.ultraprivacy);
736         MenuItem blockAllThirdPartyRequestsMenuItem = menu.findItem(R.id.block_all_third_party_requests);
737         MenuItem fontSizeMenuItem = menu.findItem(R.id.font_size);
738         MenuItem swipeToRefreshMenuItem = menu.findItem(R.id.swipe_to_refresh);
739         MenuItem wideViewportMenuItem = menu.findItem(R.id.wide_viewport);
740         MenuItem displayImagesMenuItem = menu.findItem(R.id.display_images);
741         MenuItem nightModeMenuItem = menu.findItem(R.id.night_mode);
742         MenuItem proxyThroughOrbotMenuItem = menu.findItem(R.id.proxy_through_orbot);
743
744         // Get a handle for the cookie manager.
745         CookieManager cookieManager = CookieManager.getInstance();
746
747         // Initialize the current user agent string and the font size.
748         String currentUserAgent = getString(R.string.user_agent_privacy_browser);
749         int fontSize = 100;
750
751         // Set items that require the current web view to be populated.  It will be null when the program is first opened, as `onPrepareOptionsMenu()` is called before the first WebView is initialized.
752         if (currentWebView != null) {
753             // Set the add or edit domain text.
754             if (currentWebView.getDomainSettingsApplied()) {
755                 addOrEditDomain.setTitle(R.string.edit_domain_settings);
756             } else {
757                 addOrEditDomain.setTitle(R.string.add_domain_settings);
758             }
759
760             // Get the current user agent from the WebView.
761             currentUserAgent = currentWebView.getSettings().getUserAgentString();
762
763             // Get the current font size from the
764             fontSize = currentWebView.getSettings().getTextZoom();
765
766             // Set the status of the menu item checkboxes.
767             domStorageMenuItem.setChecked(currentWebView.getSettings().getDomStorageEnabled());
768             saveFormDataMenuItem.setChecked(currentWebView.getSettings().getSaveFormData());  // Form data can be removed once the minimum API >= 26.
769             easyListMenuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.EASYLIST));
770             easyPrivacyMenuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.EASYPRIVACY));
771             fanboysAnnoyanceListMenuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST));
772             fanboysSocialBlockingListMenuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST));
773             ultraListMenuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.ULTRALIST));
774             ultraPrivacyMenuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.ULTRAPRIVACY));
775             blockAllThirdPartyRequestsMenuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.THIRD_PARTY_REQUESTS));
776             swipeToRefreshMenuItem.setChecked(currentWebView.getSwipeToRefresh());
777             wideViewportMenuItem.setChecked(currentWebView.getSettings().getUseWideViewPort());
778             displayImagesMenuItem.setChecked(currentWebView.getSettings().getLoadsImagesAutomatically());
779             nightModeMenuItem.setChecked(currentWebView.getNightMode());
780
781             // Initialize the display names for the blocklists with the number of blocked requests.
782             blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + currentWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
783             easyListMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.EASYLIST) + " - " + getString(R.string.easylist));
784             easyPrivacyMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.EASYPRIVACY) + " - " + getString(R.string.easyprivacy));
785             fanboysAnnoyanceListMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST) + " - " + getString(R.string.fanboys_annoyance_list));
786             fanboysSocialBlockingListMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST) + " - " + getString(R.string.fanboys_social_blocking_list));
787             ultraListMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.ULTRALIST) + " - " + getString(R.string.ultralist));
788             ultraPrivacyMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.ULTRAPRIVACY) + " - " + getString(R.string.ultraprivacy));
789             blockAllThirdPartyRequestsMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.THIRD_PARTY_REQUESTS) + " - " + getString(R.string.block_all_third_party_requests));
790
791             // Only modify third-party cookies if the API >= 21.
792             if (Build.VERSION.SDK_INT >= 21) {
793                 // Set the status of the third-party cookies checkbox.
794                 thirdPartyCookiesMenuItem.setChecked(cookieManager.acceptThirdPartyCookies(currentWebView));
795
796                 // Enable third-party cookies if first-party cookies are enabled.
797                 thirdPartyCookiesMenuItem.setEnabled(cookieManager.acceptCookie());
798             }
799
800             // Enable DOM Storage if JavaScript is enabled.
801             domStorageMenuItem.setEnabled(currentWebView.getSettings().getJavaScriptEnabled());
802         }
803
804         // Set the status of the menu item checkboxes.
805         firstPartyCookiesMenuItem.setChecked(cookieManager.acceptCookie());
806         proxyThroughOrbotMenuItem.setChecked(proxyThroughOrbot);
807
808         // Enable Clear Cookies if there are any.
809         clearCookiesMenuItem.setEnabled(cookieManager.hasCookies());
810
811         // Get the application's private data directory, which will be something like `/data/user/0/com.stoutner.privacybrowser.standard`, which links to `/data/data/com.stoutner.privacybrowser.standard`.
812         String privateDataDirectoryString = getApplicationInfo().dataDir;
813
814         // Get a count of the number of files in the Local Storage directory.
815         File localStorageDirectory = new File (privateDataDirectoryString + "/app_webview/Local Storage/");
816         int localStorageDirectoryNumberOfFiles = 0;
817         if (localStorageDirectory.exists()) {
818             localStorageDirectoryNumberOfFiles = localStorageDirectory.list().length;
819         }
820
821         // Get a count of the number of files in the IndexedDB directory.
822         File indexedDBDirectory = new File (privateDataDirectoryString + "/app_webview/IndexedDB");
823         int indexedDBDirectoryNumberOfFiles = 0;
824         if (indexedDBDirectory.exists()) {
825             indexedDBDirectoryNumberOfFiles = indexedDBDirectory.list().length;
826         }
827
828         // Enable Clear DOM Storage if there is any.
829         clearDOMStorageMenuItem.setEnabled(localStorageDirectoryNumberOfFiles > 0 || indexedDBDirectoryNumberOfFiles > 0);
830
831         // Enable Clear Form Data is there is any.  This can be removed once the minimum API >= 26.
832         if (Build.VERSION.SDK_INT < 26) {
833             // Get the WebView database.
834             WebViewDatabase webViewDatabase = WebViewDatabase.getInstance(this);
835
836             // Enable the clear form data menu item if there is anything to clear.
837             clearFormDataMenuItem.setEnabled(webViewDatabase.hasFormData());
838         }
839
840         // Enable Clear Data if any of the submenu items are enabled.
841         clearDataMenuItem.setEnabled(clearCookiesMenuItem.isEnabled() || clearDOMStorageMenuItem.isEnabled() || clearFormDataMenuItem.isEnabled());
842
843         // Disable Fanboy's Social Blocking List menu item if Fanboy's Annoyance List is checked.
844         fanboysSocialBlockingListMenuItem.setEnabled(!fanboysAnnoyanceListMenuItem.isChecked());
845
846         // Select the current user agent menu item.  A switch statement cannot be used because the user agents are not compile time constants.
847         if (currentUserAgent.equals(getResources().getStringArray(R.array.user_agent_data)[0])) {  // Privacy Browser.
848             menu.findItem(R.id.user_agent_privacy_browser).setChecked(true);
849         } else if (currentUserAgent.equals(webViewDefaultUserAgent)) {  // WebView Default.
850             menu.findItem(R.id.user_agent_webview_default).setChecked(true);
851         } else if (currentUserAgent.equals(getResources().getStringArray(R.array.user_agent_data)[2])) {  // Firefox on Android.
852             menu.findItem(R.id.user_agent_firefox_on_android).setChecked(true);
853         } else if (currentUserAgent.equals(getResources().getStringArray(R.array.user_agent_data)[3])) {  // Chrome on Android.
854             menu.findItem(R.id.user_agent_chrome_on_android).setChecked(true);
855         } else if (currentUserAgent.equals(getResources().getStringArray(R.array.user_agent_data)[4])) {  // Safari on iOS.
856             menu.findItem(R.id.user_agent_safari_on_ios).setChecked(true);
857         } else if (currentUserAgent.equals(getResources().getStringArray(R.array.user_agent_data)[5])) {  // Firefox on Linux.
858             menu.findItem(R.id.user_agent_firefox_on_linux).setChecked(true);
859         } else if (currentUserAgent.equals(getResources().getStringArray(R.array.user_agent_data)[6])) {  // Chromium on Linux.
860             menu.findItem(R.id.user_agent_chromium_on_linux).setChecked(true);
861         } else if (currentUserAgent.equals(getResources().getStringArray(R.array.user_agent_data)[7])) {  // Firefox on Windows.
862             menu.findItem(R.id.user_agent_firefox_on_windows).setChecked(true);
863         } else if (currentUserAgent.equals(getResources().getStringArray(R.array.user_agent_data)[8])) {  // Chrome on Windows.
864             menu.findItem(R.id.user_agent_chrome_on_windows).setChecked(true);
865         } else if (currentUserAgent.equals(getResources().getStringArray(R.array.user_agent_data)[9])) {  // Edge on Windows.
866             menu.findItem(R.id.user_agent_edge_on_windows).setChecked(true);
867         } else if (currentUserAgent.equals(getResources().getStringArray(R.array.user_agent_data)[10])) {  // Internet Explorer on Windows.
868             menu.findItem(R.id.user_agent_internet_explorer_on_windows).setChecked(true);
869         } else if (currentUserAgent.equals(getResources().getStringArray(R.array.user_agent_data)[11])) {  // Safari on macOS.
870             menu.findItem(R.id.user_agent_safari_on_macos).setChecked(true);
871         } else {  // Custom user agent.
872             menu.findItem(R.id.user_agent_custom).setChecked(true);
873         }
874
875         // Instantiate the font size title and the selected font size menu item.
876         String fontSizeTitle;
877         MenuItem selectedFontSizeMenuItem;
878
879         // Prepare the font size title and current size menu item.
880         //noinspection DuplicateBranchesInSwitch
881         switch (fontSize) {
882             case 25:
883                 fontSizeTitle = getString(R.string.font_size) + " - " + getString(R.string.twenty_five_percent);
884                 selectedFontSizeMenuItem = menu.findItem(R.id.font_size_twenty_five_percent);
885                 break;
886
887             case 50:
888                 fontSizeTitle = getString(R.string.font_size) + " - " + getString(R.string.fifty_percent);
889                 selectedFontSizeMenuItem = menu.findItem(R.id.font_size_fifty_percent);
890                 break;
891
892             case 75:
893                 fontSizeTitle = getString(R.string.font_size) + " - " + getString(R.string.seventy_five_percent);
894                 selectedFontSizeMenuItem = menu.findItem(R.id.font_size_seventy_five_percent);
895                 break;
896
897             case 100:
898                 fontSizeTitle = getString(R.string.font_size) + " - " + getString(R.string.one_hundred_percent);
899                 selectedFontSizeMenuItem = menu.findItem(R.id.font_size_one_hundred_percent);
900                 break;
901
902             case 125:
903                 fontSizeTitle = getString(R.string.font_size) + " - " + getString(R.string.one_hundred_twenty_five_percent);
904                 selectedFontSizeMenuItem = menu.findItem(R.id.font_size_one_hundred_twenty_five_percent);
905                 break;
906
907             case 150:
908                 fontSizeTitle = getString(R.string.font_size) + " - " + getString(R.string.one_hundred_fifty_percent);
909                 selectedFontSizeMenuItem = menu.findItem(R.id.font_size_one_hundred_fifty_percent);
910                 break;
911
912             case 175:
913                 fontSizeTitle = getString(R.string.font_size) + " - " + getString(R.string.one_hundred_seventy_five_percent);
914                 selectedFontSizeMenuItem = menu.findItem(R.id.font_size_one_hundred_seventy_five_percent);
915                 break;
916
917             case 200:
918                 fontSizeTitle = getString(R.string.font_size) + " - " + getString(R.string.two_hundred_percent);
919                 selectedFontSizeMenuItem = menu.findItem(R.id.font_size_two_hundred_percent);
920                 break;
921
922             default:
923                 fontSizeTitle = getString(R.string.font_size) + " - " + getString(R.string.one_hundred_percent);
924                 selectedFontSizeMenuItem = menu.findItem(R.id.font_size_one_hundred_percent);
925                 break;
926         }
927
928         // Set the font size title and select the current size menu item.
929         fontSizeMenuItem.setTitle(fontSizeTitle);
930         selectedFontSizeMenuItem.setChecked(true);
931
932         // Run all the other default commands.
933         super.onPrepareOptionsMenu(menu);
934
935         // Display the menu.
936         return true;
937     }
938
939     @Override
940     // Remove Android Studio's warning about the dangers of using SetJavaScriptEnabled.
941     @SuppressLint("SetJavaScriptEnabled")
942     public boolean onOptionsItemSelected(MenuItem menuItem) {
943         // Get the selected menu item ID.
944         int menuItemId = menuItem.getItemId();
945
946         // Get a handle for the shared preferences.
947         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
948
949         // Get a handle for the cookie manager.
950         CookieManager cookieManager = CookieManager.getInstance();
951
952         // Run the commands that correlate to the selected menu item.
953         switch (menuItemId) {
954             case R.id.toggle_javascript:
955                 // Toggle the JavaScript status.
956                 currentWebView.getSettings().setJavaScriptEnabled(!currentWebView.getSettings().getJavaScriptEnabled());
957
958                 // Update the privacy icon.  `true` runs `invalidateOptionsMenu` as the last step.
959                 updatePrivacyIcons(true);
960
961                 // Display a `Snackbar`.
962                 if (currentWebView.getSettings().getJavaScriptEnabled()) {  // JavaScrip is enabled.
963                     Snackbar.make(findViewById(R.id.webviewpager), R.string.javascript_enabled, Snackbar.LENGTH_SHORT).show();
964                 } else if (cookieManager.acceptCookie()) {  // JavaScript is disabled, but first-party cookies are enabled.
965                     Snackbar.make(findViewById(R.id.webviewpager), R.string.javascript_disabled, Snackbar.LENGTH_SHORT).show();
966                 } else {  // Privacy mode.
967                     Snackbar.make(findViewById(R.id.webviewpager), R.string.privacy_mode, Snackbar.LENGTH_SHORT).show();
968                 }
969
970                 // Reload the current WebView.
971                 currentWebView.reload();
972
973                 // Consume the event.
974                 return true;
975
976             case R.id.add_or_edit_domain:
977                 if (currentWebView.getDomainSettingsApplied()) {  // Edit the current domain settings.
978                     // Reapply the domain settings on returning to `MainWebViewActivity`.
979                     reapplyDomainSettingsOnRestart = true;
980
981                     // Create an intent to launch the domains activity.
982                     Intent domainsIntent = new Intent(this, DomainsActivity.class);
983
984                     // Add the extra information to the intent.
985                     domainsIntent.putExtra("load_domain", currentWebView.getDomainSettingsDatabaseId());
986                     domainsIntent.putExtra("close_on_back", true);
987                     domainsIntent.putExtra("current_url", currentWebView.getUrl());
988
989                     // Get the current certificate.
990                     SslCertificate sslCertificate = currentWebView.getCertificate();
991
992                     // Check to see if the SSL certificate is populated.
993                     if (sslCertificate != null) {
994                         // Extract the certificate to strings.
995                         String issuedToCName = sslCertificate.getIssuedTo().getCName();
996                         String issuedToOName = sslCertificate.getIssuedTo().getOName();
997                         String issuedToUName = sslCertificate.getIssuedTo().getUName();
998                         String issuedByCName = sslCertificate.getIssuedBy().getCName();
999                         String issuedByOName = sslCertificate.getIssuedBy().getOName();
1000                         String issuedByUName = sslCertificate.getIssuedBy().getUName();
1001                         long startDateLong = sslCertificate.getValidNotBeforeDate().getTime();
1002                         long endDateLong = sslCertificate.getValidNotAfterDate().getTime();
1003
1004                         // Add the certificate to the intent.
1005                         domainsIntent.putExtra("ssl_issued_to_cname", issuedToCName);
1006                         domainsIntent.putExtra("ssl_issued_to_oname", issuedToOName);
1007                         domainsIntent.putExtra("ssl_issued_to_uname", issuedToUName);
1008                         domainsIntent.putExtra("ssl_issued_by_cname", issuedByCName);
1009                         domainsIntent.putExtra("ssl_issued_by_oname", issuedByOName);
1010                         domainsIntent.putExtra("ssl_issued_by_uname", issuedByUName);
1011                         domainsIntent.putExtra("ssl_start_date", startDateLong);
1012                         domainsIntent.putExtra("ssl_end_date", endDateLong);
1013                     }
1014
1015                     // Check to see if the current IP addresses have been received.
1016                     if (currentWebView.hasCurrentIpAddresses()) {
1017                         // Add the current IP addresses to the intent.
1018                         domainsIntent.putExtra("current_ip_addresses", currentWebView.getCurrentIpAddresses());
1019                     }
1020
1021                     // Make it so.
1022                     startActivity(domainsIntent);
1023                 } else {  // Add a new domain.
1024                     // Apply the new domain settings on returning to `MainWebViewActivity`.
1025                     reapplyDomainSettingsOnRestart = true;
1026
1027                     // Get the current domain
1028                     Uri currentUri = Uri.parse(currentWebView.getUrl());
1029                     String currentDomain = currentUri.getHost();
1030
1031                     // Initialize the database handler.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
1032                     DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(this, null, null, 0);
1033
1034                     // Create the domain and store the database ID.
1035                     int newDomainDatabaseId = domainsDatabaseHelper.addDomain(currentDomain);
1036
1037                     // Create an intent to launch the domains activity.
1038                     Intent domainsIntent = new Intent(this, DomainsActivity.class);
1039
1040                     // Add the extra information to the intent.
1041                     domainsIntent.putExtra("load_domain", newDomainDatabaseId);
1042                     domainsIntent.putExtra("close_on_back", true);
1043                     domainsIntent.putExtra("current_url", currentWebView.getUrl());
1044
1045                     // Get the current certificate.
1046                     SslCertificate sslCertificate = currentWebView.getCertificate();
1047
1048                     // Check to see if the SSL certificate is populated.
1049                     if (sslCertificate != null) {
1050                         // Extract the certificate to strings.
1051                         String issuedToCName = sslCertificate.getIssuedTo().getCName();
1052                         String issuedToOName = sslCertificate.getIssuedTo().getOName();
1053                         String issuedToUName = sslCertificate.getIssuedTo().getUName();
1054                         String issuedByCName = sslCertificate.getIssuedBy().getCName();
1055                         String issuedByOName = sslCertificate.getIssuedBy().getOName();
1056                         String issuedByUName = sslCertificate.getIssuedBy().getUName();
1057                         long startDateLong = sslCertificate.getValidNotBeforeDate().getTime();
1058                         long endDateLong = sslCertificate.getValidNotAfterDate().getTime();
1059
1060                         // Add the certificate to the intent.
1061                         domainsIntent.putExtra("ssl_issued_to_cname", issuedToCName);
1062                         domainsIntent.putExtra("ssl_issued_to_oname", issuedToOName);
1063                         domainsIntent.putExtra("ssl_issued_to_uname", issuedToUName);
1064                         domainsIntent.putExtra("ssl_issued_by_cname", issuedByCName);
1065                         domainsIntent.putExtra("ssl_issued_by_oname", issuedByOName);
1066                         domainsIntent.putExtra("ssl_issued_by_uname", issuedByUName);
1067                         domainsIntent.putExtra("ssl_start_date", startDateLong);
1068                         domainsIntent.putExtra("ssl_end_date", endDateLong);
1069                     }
1070
1071                     // Check to see if the current IP addresses have been received.
1072                     if (currentWebView.hasCurrentIpAddresses()) {
1073                         // Add the current IP addresses to the intent.
1074                         domainsIntent.putExtra("current_ip_addresses", currentWebView.getCurrentIpAddresses());
1075                     }
1076
1077                     // Make it so.
1078                     startActivity(domainsIntent);
1079                 }
1080
1081                 // Consume the event.
1082                 return true;
1083
1084             case R.id.toggle_first_party_cookies:
1085                 // Switch the first-party cookie status.
1086                 cookieManager.setAcceptCookie(!cookieManager.acceptCookie());
1087
1088                 // Store the first-party cookie status.
1089                 currentWebView.setAcceptFirstPartyCookies(cookieManager.acceptCookie());
1090
1091                 // Update the menu checkbox.
1092                 menuItem.setChecked(cookieManager.acceptCookie());
1093
1094                 // Update the privacy icon.  `true` runs `invalidateOptionsMenu` as the last step.
1095                 updatePrivacyIcons(true);
1096
1097                 // Display a snackbar.
1098                 if (cookieManager.acceptCookie()) {  // First-party cookies are enabled.
1099                     Snackbar.make(findViewById(R.id.webviewpager), R.string.first_party_cookies_enabled, Snackbar.LENGTH_SHORT).show();
1100                 } else if (currentWebView.getSettings().getJavaScriptEnabled()) {  // JavaScript is still enabled.
1101                     Snackbar.make(findViewById(R.id.webviewpager), R.string.first_party_cookies_disabled, Snackbar.LENGTH_SHORT).show();
1102                 } else {  // Privacy mode.
1103                     Snackbar.make(findViewById(R.id.webviewpager), R.string.privacy_mode, Snackbar.LENGTH_SHORT).show();
1104                 }
1105
1106                 // Reload the current WebView.
1107                 currentWebView.reload();
1108
1109                 // Consume the event.
1110                 return true;
1111
1112             case R.id.toggle_third_party_cookies:
1113                 if (Build.VERSION.SDK_INT >= 21) {
1114                     // Switch the status of thirdPartyCookiesEnabled.
1115                     cookieManager.setAcceptThirdPartyCookies(currentWebView, !cookieManager.acceptThirdPartyCookies(currentWebView));
1116
1117                     // Update the menu checkbox.
1118                     menuItem.setChecked(cookieManager.acceptThirdPartyCookies(currentWebView));
1119
1120                     // Display a snackbar.
1121                     if (cookieManager.acceptThirdPartyCookies(currentWebView)) {
1122                         Snackbar.make(findViewById(R.id.webviewpager), R.string.third_party_cookies_enabled, Snackbar.LENGTH_SHORT).show();
1123                     } else {
1124                         Snackbar.make(findViewById(R.id.webviewpager), R.string.third_party_cookies_disabled, Snackbar.LENGTH_SHORT).show();
1125                     }
1126
1127                     // Reload the current WebView.
1128                     currentWebView.reload();
1129                 } // Else do nothing because SDK < 21.
1130
1131                 // Consume the event.
1132                 return true;
1133
1134             case R.id.toggle_dom_storage:
1135                 // Toggle the status of domStorageEnabled.
1136                 currentWebView.getSettings().setDomStorageEnabled(!currentWebView.getSettings().getDomStorageEnabled());
1137
1138                 // Update the menu checkbox.
1139                 menuItem.setChecked(currentWebView.getSettings().getDomStorageEnabled());
1140
1141                 // Update the privacy icon.  `true` refreshes the app bar icons.
1142                 updatePrivacyIcons(true);
1143
1144                 // Display a snackbar.
1145                 if (currentWebView.getSettings().getDomStorageEnabled()) {
1146                     Snackbar.make(findViewById(R.id.webviewpager), R.string.dom_storage_enabled, Snackbar.LENGTH_SHORT).show();
1147                 } else {
1148                     Snackbar.make(findViewById(R.id.webviewpager), R.string.dom_storage_disabled, Snackbar.LENGTH_SHORT).show();
1149                 }
1150
1151                 // Reload the current WebView.
1152                 currentWebView.reload();
1153
1154                 // Consume the event.
1155                 return true;
1156
1157             // Form data can be removed once the minimum API >= 26.
1158             case R.id.toggle_save_form_data:
1159                 // Switch the status of saveFormDataEnabled.
1160                 currentWebView.getSettings().setSaveFormData(!currentWebView.getSettings().getSaveFormData());
1161
1162                 // Update the menu checkbox.
1163                 menuItem.setChecked(currentWebView.getSettings().getSaveFormData());
1164
1165                 // Display a snackbar.
1166                 if (currentWebView.getSettings().getSaveFormData()) {
1167                     Snackbar.make(findViewById(R.id.webviewpager), R.string.form_data_enabled, Snackbar.LENGTH_SHORT).show();
1168                 } else {
1169                     Snackbar.make(findViewById(R.id.webviewpager), R.string.form_data_disabled, Snackbar.LENGTH_SHORT).show();
1170                 }
1171
1172                 // Update the privacy icon.  `true` runs `invalidateOptionsMenu` as the last step.
1173                 updatePrivacyIcons(true);
1174
1175                 // Reload the current WebView.
1176                 currentWebView.reload();
1177
1178                 // Consume the event.
1179                 return true;
1180
1181             case R.id.clear_cookies:
1182                 Snackbar.make(findViewById(R.id.webviewpager), R.string.cookies_deleted, Snackbar.LENGTH_LONG)
1183                         .setAction(R.string.undo, v -> {
1184                             // Do nothing because everything will be handled by `onDismissed()` below.
1185                         })
1186                         .addCallback(new Snackbar.Callback() {
1187                             @SuppressLint("SwitchIntDef")  // Ignore the lint warning about not handling the other possible events as they are covered by `default:`.
1188                             @Override
1189                             public void onDismissed(Snackbar snackbar, int event) {
1190                                 if (event != Snackbar.Callback.DISMISS_EVENT_ACTION) {  // The snackbar was dismissed without the undo button being pushed.
1191                                     // Delete the cookies, which command varies by SDK.
1192                                     if (Build.VERSION.SDK_INT < 21) {
1193                                         cookieManager.removeAllCookie();
1194                                     } else {
1195                                         cookieManager.removeAllCookies(null);
1196                                     }
1197                                 }
1198                             }
1199                         })
1200                         .show();
1201
1202                 // Consume the event.
1203                 return true;
1204
1205             case R.id.clear_dom_storage:
1206                 Snackbar.make(findViewById(R.id.webviewpager), R.string.dom_storage_deleted, Snackbar.LENGTH_LONG)
1207                         .setAction(R.string.undo, v -> {
1208                             // Do nothing because everything will be handled by `onDismissed()` below.
1209                         })
1210                         .addCallback(new Snackbar.Callback() {
1211                             @SuppressLint("SwitchIntDef")  // Ignore the lint warning about not handling the other possible events as they are covered by `default:`.
1212                             @Override
1213                             public void onDismissed(Snackbar snackbar, int event) {
1214                                 if (event != Snackbar.Callback.DISMISS_EVENT_ACTION) {  // The snackbar was dismissed without the undo button being pushed.
1215                                     // Delete the DOM Storage.
1216                                     WebStorage webStorage = WebStorage.getInstance();
1217                                     webStorage.deleteAllData();
1218
1219                                     // Initialize a handler to manually delete the DOM storage files and directories.
1220                                     Handler deleteDomStorageHandler = new Handler();
1221
1222                                     // Setup a runnable to manually delete the DOM storage files and directories.
1223                                     Runnable deleteDomStorageRunnable = () -> {
1224                                         try {
1225                                             // Get a handle for the runtime.
1226                                             Runtime runtime = Runtime.getRuntime();
1227
1228                                             // Get the application's private data directory, which will be something like `/data/user/0/com.stoutner.privacybrowser.standard`,
1229                                             // which links to `/data/data/com.stoutner.privacybrowser.standard`.
1230                                             String privateDataDirectoryString = getApplicationInfo().dataDir;
1231
1232                                             // A string array must be used because the directory contains a space and `Runtime.exec` will otherwise not escape the string correctly.
1233                                             Process deleteLocalStorageProcess = runtime.exec(new String[]{"rm", "-rf", privateDataDirectoryString + "/app_webview/Local Storage/"});
1234
1235                                             // Multiple commands must be used because `Runtime.exec()` does not like `*`.
1236                                             Process deleteIndexProcess = runtime.exec("rm -rf " + privateDataDirectoryString + "/app_webview/IndexedDB");
1237                                             Process deleteQuotaManagerProcess = runtime.exec("rm -f " + privateDataDirectoryString + "/app_webview/QuotaManager");
1238                                             Process deleteQuotaManagerJournalProcess = runtime.exec("rm -f " + privateDataDirectoryString + "/app_webview/QuotaManager-journal");
1239                                             Process deleteDatabasesProcess = runtime.exec("rm -rf " + privateDataDirectoryString + "/app_webview/databases");
1240
1241                                             // Wait for the processes to finish.
1242                                             deleteLocalStorageProcess.waitFor();
1243                                             deleteIndexProcess.waitFor();
1244                                             deleteQuotaManagerProcess.waitFor();
1245                                             deleteQuotaManagerJournalProcess.waitFor();
1246                                             deleteDatabasesProcess.waitFor();
1247                                         } catch (Exception exception) {
1248                                             // Do nothing if an error is thrown.
1249                                         }
1250                                     };
1251
1252                                     // Manually delete the DOM storage files after 200 milliseconds.
1253                                     deleteDomStorageHandler.postDelayed(deleteDomStorageRunnable, 200);
1254                                 }
1255                             }
1256                         })
1257                         .show();
1258
1259                 // Consume the event.
1260                 return true;
1261
1262             // Form data can be remove once the minimum API >= 26.
1263             case R.id.clear_form_data:
1264                 Snackbar.make(findViewById(R.id.webviewpager), R.string.form_data_deleted, Snackbar.LENGTH_LONG)
1265                         .setAction(R.string.undo, v -> {
1266                             // Do nothing because everything will be handled by `onDismissed()` below.
1267                         })
1268                         .addCallback(new Snackbar.Callback() {
1269                             @SuppressLint("SwitchIntDef")  // Ignore the lint warning about not handling the other possible events as they are covered by `default:`.
1270                             @Override
1271                             public void onDismissed(Snackbar snackbar, int event) {
1272                                 if (event != Snackbar.Callback.DISMISS_EVENT_ACTION) {  // The snackbar was dismissed without the undo button being pushed.
1273                                     // Delete the form data.
1274                                     WebViewDatabase mainWebViewDatabase = WebViewDatabase.getInstance(getApplicationContext());
1275                                     mainWebViewDatabase.clearFormData();
1276                                 }
1277                             }
1278                         })
1279                         .show();
1280
1281                 // Consume the event.
1282                 return true;
1283
1284             case R.id.easylist:
1285                 // Toggle the EasyList status.
1286                 currentWebView.enableBlocklist(NestedScrollWebView.EASYLIST, !currentWebView.isBlocklistEnabled(NestedScrollWebView.EASYLIST));
1287
1288                 // Update the menu checkbox.
1289                 menuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.EASYLIST));
1290
1291                 // Reload the current WebView.
1292                 currentWebView.reload();
1293
1294                 // Consume the event.
1295                 return true;
1296
1297             case R.id.easyprivacy:
1298                 // Toggle the EasyPrivacy status.
1299                 currentWebView.enableBlocklist(NestedScrollWebView.EASYPRIVACY, !currentWebView.isBlocklistEnabled(NestedScrollWebView.EASYPRIVACY));
1300
1301                 // Update the menu checkbox.
1302                 menuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.EASYPRIVACY));
1303
1304                 // Reload the current WebView.
1305                 currentWebView.reload();
1306
1307                 // Consume the event.
1308                 return true;
1309
1310             case R.id.fanboys_annoyance_list:
1311                 // Toggle Fanboy's Annoyance List status.
1312                 currentWebView.enableBlocklist(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST, !currentWebView.isBlocklistEnabled(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST));
1313
1314                 // Update the menu checkbox.
1315                 menuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST));
1316
1317                 // Update the staus of Fanboy's Social Blocking List.
1318                 MenuItem fanboysSocialBlockingListMenuItem = optionsMenu.findItem(R.id.fanboys_social_blocking_list);
1319                 fanboysSocialBlockingListMenuItem.setEnabled(!currentWebView.isBlocklistEnabled(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST));
1320
1321                 // Reload the current WebView.
1322                 currentWebView.reload();
1323
1324                 // Consume the event.
1325                 return true;
1326
1327             case R.id.fanboys_social_blocking_list:
1328                 // Toggle Fanboy's Social Blocking List status.
1329                 currentWebView.enableBlocklist(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST, !currentWebView.isBlocklistEnabled(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST));
1330
1331                 // Update the menu checkbox.
1332                 menuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST));
1333
1334                 // Reload the current WebView.
1335                 currentWebView.reload();
1336
1337                 // Consume the event.
1338                 return true;
1339
1340             case R.id.ultralist:
1341                 // Toggle the UltraList status.
1342                 currentWebView.enableBlocklist(NestedScrollWebView.ULTRALIST, !currentWebView.isBlocklistEnabled(NestedScrollWebView.ULTRALIST));
1343
1344                 // Update the menu checkbox.
1345                 menuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.ULTRALIST));
1346
1347                 // Reload the current WebView.
1348                 currentWebView.reload();
1349
1350                 // Consume the event.
1351                 return true;
1352
1353             case R.id.ultraprivacy:
1354                 // Toggle the UltraPrivacy status.
1355                 currentWebView.enableBlocklist(NestedScrollWebView.ULTRAPRIVACY, !currentWebView.isBlocklistEnabled(NestedScrollWebView.ULTRAPRIVACY));
1356
1357                 // Update the menu checkbox.
1358                 menuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.ULTRAPRIVACY));
1359
1360                 // Reload the current WebView.
1361                 currentWebView.reload();
1362
1363                 // Consume the event.
1364                 return true;
1365
1366             case R.id.block_all_third_party_requests:
1367                 //Toggle the third-party requests blocker status.
1368                 currentWebView.enableBlocklist(NestedScrollWebView.THIRD_PARTY_REQUESTS, !currentWebView.isBlocklistEnabled(NestedScrollWebView.THIRD_PARTY_REQUESTS));
1369
1370                 // Update the menu checkbox.
1371                 menuItem.setChecked(currentWebView.isBlocklistEnabled(NestedScrollWebView.THIRD_PARTY_REQUESTS));
1372
1373                 // Reload the current WebView.
1374                 currentWebView.reload();
1375
1376                 // Consume the event.
1377                 return true;
1378
1379             case R.id.user_agent_privacy_browser:
1380                 // Update the user agent.
1381                 currentWebView.getSettings().setUserAgentString(getResources().getStringArray(R.array.user_agent_data)[0]);
1382
1383                 // Reload the current WebView.
1384                 currentWebView.reload();
1385
1386                 // Consume the event.
1387                 return true;
1388
1389             case R.id.user_agent_webview_default:
1390                 // Update the user agent.
1391                 currentWebView.getSettings().setUserAgentString("");
1392
1393                 // Reload the current WebView.
1394                 currentWebView.reload();
1395
1396                 // Consume the event.
1397                 return true;
1398
1399             case R.id.user_agent_firefox_on_android:
1400                 // Update the user agent.
1401                 currentWebView.getSettings().setUserAgentString(getResources().getStringArray(R.array.user_agent_data)[2]);
1402
1403                 // Reload the current WebView.
1404                 currentWebView.reload();
1405
1406                 // Consume the event.
1407                 return true;
1408
1409             case R.id.user_agent_chrome_on_android:
1410                 // Update the user agent.
1411                 currentWebView.getSettings().setUserAgentString(getResources().getStringArray(R.array.user_agent_data)[3]);
1412
1413                 // Reload the current WebView.
1414                 currentWebView.reload();
1415
1416                 // Consume the event.
1417                 return true;
1418
1419             case R.id.user_agent_safari_on_ios:
1420                 // Update the user agent.
1421                 currentWebView.getSettings().setUserAgentString(getResources().getStringArray(R.array.user_agent_data)[4]);
1422
1423                 // Reload the current WebView.
1424                 currentWebView.reload();
1425
1426                 // Consume the event.
1427                 return true;
1428
1429             case R.id.user_agent_firefox_on_linux:
1430                 // Update the user agent.
1431                 currentWebView.getSettings().setUserAgentString(getResources().getStringArray(R.array.user_agent_data)[5]);
1432
1433                 // Reload the current WebView.
1434                 currentWebView.reload();
1435
1436                 // Consume the event.
1437                 return true;
1438
1439             case R.id.user_agent_chromium_on_linux:
1440                 // Update the user agent.
1441                 currentWebView.getSettings().setUserAgentString(getResources().getStringArray(R.array.user_agent_data)[6]);
1442
1443                 // Reload the current WebView.
1444                 currentWebView.reload();
1445
1446                 // Consume the event.
1447                 return true;
1448
1449             case R.id.user_agent_firefox_on_windows:
1450                 // Update the user agent.
1451                 currentWebView.getSettings().setUserAgentString(getResources().getStringArray(R.array.user_agent_data)[7]);
1452
1453                 // Reload the current WebView.
1454                 currentWebView.reload();
1455
1456                 // Consume the event.
1457                 return true;
1458
1459             case R.id.user_agent_chrome_on_windows:
1460                 // Update the user agent.
1461                 currentWebView.getSettings().setUserAgentString(getResources().getStringArray(R.array.user_agent_data)[8]);
1462
1463                 // Reload the current WebView.
1464                 currentWebView.reload();
1465
1466                 // Consume the event.
1467                 return true;
1468
1469             case R.id.user_agent_edge_on_windows:
1470                 // Update the user agent.
1471                 currentWebView.getSettings().setUserAgentString(getResources().getStringArray(R.array.user_agent_data)[9]);
1472
1473                 // Reload the current WebView.
1474                 currentWebView.reload();
1475
1476                 // Consume the event.
1477                 return true;
1478
1479             case R.id.user_agent_internet_explorer_on_windows:
1480                 // Update the user agent.
1481                 currentWebView.getSettings().setUserAgentString(getResources().getStringArray(R.array.user_agent_data)[10]);
1482
1483                 // Reload the current WebView.
1484                 currentWebView.reload();
1485
1486                 // Consume the event.
1487                 return true;
1488
1489             case R.id.user_agent_safari_on_macos:
1490                 // Update the user agent.
1491                 currentWebView.getSettings().setUserAgentString(getResources().getStringArray(R.array.user_agent_data)[11]);
1492
1493                 // Reload the current WebView.
1494                 currentWebView.reload();
1495
1496                 // Consume the event.
1497                 return true;
1498
1499             case R.id.user_agent_custom:
1500                 // Update the user agent.
1501                 currentWebView.getSettings().setUserAgentString(sharedPreferences.getString("custom_user_agent", getString(R.string.custom_user_agent_default_value)));
1502
1503                 // Reload the current WebView.
1504                 currentWebView.reload();
1505
1506                 // Consume the event.
1507                 return true;
1508
1509             case R.id.font_size_twenty_five_percent:
1510                 // Set the font size.
1511                 currentWebView.getSettings().setTextZoom(25);
1512
1513                 // Consume the event.
1514                 return true;
1515
1516             case R.id.font_size_fifty_percent:
1517                 // Set the font size.
1518                 currentWebView.getSettings().setTextZoom(50);
1519
1520                 // Consume the event.
1521                 return true;
1522
1523             case R.id.font_size_seventy_five_percent:
1524                 // Set the font size.
1525                 currentWebView.getSettings().setTextZoom(75);
1526
1527                 // Consume the event.
1528                 return true;
1529
1530             case R.id.font_size_one_hundred_percent:
1531                 // Set the font size.
1532                 currentWebView.getSettings().setTextZoom(100);
1533
1534                 // Consume the event.
1535                 return true;
1536
1537             case R.id.font_size_one_hundred_twenty_five_percent:
1538                 // Set the font size.
1539                 currentWebView.getSettings().setTextZoom(125);
1540
1541                 // Consume the event.
1542                 return true;
1543
1544             case R.id.font_size_one_hundred_fifty_percent:
1545                 // Set the font size.
1546                 currentWebView.getSettings().setTextZoom(150);
1547
1548                 // Consume the event.
1549                 return true;
1550
1551             case R.id.font_size_one_hundred_seventy_five_percent:
1552                 // Set the font size.
1553                 currentWebView.getSettings().setTextZoom(175);
1554
1555                 // Consume the event.
1556                 return true;
1557
1558             case R.id.font_size_two_hundred_percent:
1559                 // Set the font size.
1560                 currentWebView.getSettings().setTextZoom(200);
1561
1562                 // Consume the event.
1563                 return true;
1564
1565             case R.id.swipe_to_refresh:
1566                 // Toggle the stored status of swipe to refresh.
1567                 currentWebView.setSwipeToRefresh(!currentWebView.getSwipeToRefresh());
1568
1569                 // Get a handle for the swipe refresh layout.
1570                 SwipeRefreshLayout swipeRefreshLayout = findViewById(R.id.swiperefreshlayout);
1571
1572                 // Update the swipe refresh layout.
1573                 if (currentWebView.getSwipeToRefresh()) {  // Swipe to refresh is enabled.
1574                     // Only enable the swipe refresh layout if the WebView is scrolled to the top.  It is updated every time the scroll changes.
1575                     swipeRefreshLayout.setEnabled(currentWebView.getY() == 0);
1576                 } else {  // Swipe to refresh is disabled.
1577                     // Disable the swipe refresh layout.
1578                     swipeRefreshLayout.setEnabled(false);
1579                 }
1580
1581                 // Consume the event.
1582                 return true;
1583
1584             case R.id.wide_viewport:
1585                 // Toggle the viewport.
1586                 currentWebView.getSettings().setUseWideViewPort(!currentWebView.getSettings().getUseWideViewPort());
1587
1588                 // Consume the event.
1589                 return true;
1590
1591             case R.id.display_images:
1592                 if (currentWebView.getSettings().getLoadsImagesAutomatically()) {  // Images are currently loaded automatically.
1593                     // Disable loading of images.
1594                     currentWebView.getSettings().setLoadsImagesAutomatically(false);
1595
1596                     // Reload the website to remove existing images.
1597                     currentWebView.reload();
1598                 } else {  // Images are not currently loaded automatically.
1599                     // Enable loading of images.  Missing images will be loaded without the need for a reload.
1600                     currentWebView.getSettings().setLoadsImagesAutomatically(true);
1601                 }
1602
1603                 // Consume the event.
1604                 return true;
1605
1606             case R.id.night_mode:
1607                 // Toggle night mode.
1608                 currentWebView.setNightMode(!currentWebView.getNightMode());
1609
1610                 // Enable or disable JavaScript according to night mode, the global preference, and any domain settings.
1611                 if (currentWebView.getNightMode()) {  // Night mode is enabled, which requires JavaScript.
1612                     // Enable JavaScript.
1613                     currentWebView.getSettings().setJavaScriptEnabled(true);
1614                 } else if (currentWebView.getDomainSettingsApplied()) {  // Night mode is disabled and domain settings are applied.  Set JavaScript according to the domain settings.
1615                     // Apply the JavaScript preference that was stored the last time domain settings were loaded.
1616                     currentWebView.getSettings().setJavaScriptEnabled(currentWebView.getDomainSettingsJavaScriptEnabled());
1617                 } else {  // Night mode is disabled and domain settings are not applied.  Set JavaScript according to the global preference.
1618                     // Apply the JavaScript preference.
1619                     currentWebView.getSettings().setJavaScriptEnabled(sharedPreferences.getBoolean("javascript", false));
1620                 }
1621
1622                 // Update the privacy icons.
1623                 updatePrivacyIcons(false);
1624
1625                 // Reload the website.
1626                 currentWebView.reload();
1627
1628                 // Consume the event.
1629                 return true;
1630
1631             case R.id.find_on_page:
1632                 // Get a handle for the views.
1633                 Toolbar toolbar = findViewById(R.id.toolbar);
1634                 LinearLayout findOnPageLinearLayout = findViewById(R.id.find_on_page_linearlayout);
1635                 EditText findOnPageEditText = findViewById(R.id.find_on_page_edittext);
1636
1637                 // Set the minimum height of the find on page linear layout to match the toolbar.
1638                 findOnPageLinearLayout.setMinimumHeight(toolbar.getHeight());
1639
1640                 // Hide the toolbar.
1641                 toolbar.setVisibility(View.GONE);
1642
1643                 // Show the find on page linear layout.
1644                 findOnPageLinearLayout.setVisibility(View.VISIBLE);
1645
1646                 // Display the keyboard.  The app must wait 200 ms before running the command to work around a bug in Android.
1647                 // http://stackoverflow.com/questions/5520085/android-show-softkeyboard-with-showsoftinput-is-not-working
1648                 findOnPageEditText.postDelayed(() -> {
1649                     // Set the focus on `findOnPageEditText`.
1650                     findOnPageEditText.requestFocus();
1651
1652                     // Get a handle for the input method manager.
1653                     InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
1654
1655                     // Remove the lint warning below that the input method manager might be null.
1656                     assert inputMethodManager != null;
1657
1658                     // Display the keyboard.  `0` sets no input flags.
1659                     inputMethodManager.showSoftInput(findOnPageEditText, 0);
1660                 }, 200);
1661
1662                 // Consume the event.
1663                 return true;
1664
1665             case R.id.print:
1666                 // Get a print manager instance.
1667                 PrintManager printManager = (PrintManager) getSystemService(Context.PRINT_SERVICE);
1668
1669                 // Remove the lint error below that print manager might be null.
1670                 assert printManager != null;
1671
1672                 // Create a print document adapter from the current WebView.
1673                 PrintDocumentAdapter printDocumentAdapter = currentWebView.createPrintDocumentAdapter();
1674
1675                 // Print the document.
1676                 printManager.print(getString(R.string.privacy_browser_web_page), printDocumentAdapter, null);
1677
1678                 // Consume the event.
1679                 return true;
1680
1681             case R.id.save_as_image:
1682                 // Instantiate the save webpage image dialog.
1683                 DialogFragment saveWebpageImageDialogFragment = new SaveWebpageImageDialog();
1684
1685                 // Show the save webpage image dialog.
1686                 saveWebpageImageDialogFragment.show(getSupportFragmentManager(), getString(R.string.save_as_image));
1687
1688                 // Consume the event.
1689                 return true;
1690
1691             case R.id.add_to_homescreen:
1692                 // Instantiate the create home screen shortcut dialog.
1693                 DialogFragment createHomeScreenShortcutDialogFragment = CreateHomeScreenShortcutDialog.createDialog(currentWebView.getTitle(), currentWebView.getUrl(),
1694                         currentWebView.getFavoriteOrDefaultIcon());
1695
1696                 // Show the create home screen shortcut dialog.
1697                 createHomeScreenShortcutDialogFragment.show(getSupportFragmentManager(), getString(R.string.create_shortcut));
1698
1699                 // Consume the event.
1700                 return true;
1701
1702             case R.id.view_source:
1703                 // Create an intent to launch the view source activity.
1704                 Intent viewSourceIntent = new Intent(this, ViewSourceActivity.class);
1705
1706                 // Add the variables to the intent.
1707                 viewSourceIntent.putExtra("user_agent", currentWebView.getSettings().getUserAgentString());
1708                 viewSourceIntent.putExtra("current_url", currentWebView.getUrl());
1709
1710                 // Make it so.
1711                 startActivity(viewSourceIntent);
1712
1713                 // Consume the event.
1714                 return true;
1715
1716             case R.id.share_url:
1717                 // Setup the share string.
1718                 String shareString = currentWebView.getTitle() + " – " + currentWebView.getUrl();
1719
1720                 // Create the share intent.
1721                 Intent shareIntent = new Intent(Intent.ACTION_SEND);
1722                 shareIntent.putExtra(Intent.EXTRA_TEXT, shareString);
1723                 shareIntent.setType("text/plain");
1724
1725                 // Make it so.
1726                 startActivity(Intent.createChooser(shareIntent, getString(R.string.share_url)));
1727
1728                 // Consume the event.
1729                 return true;
1730
1731             case R.id.open_with_app:
1732                 // Open the URL with an outside app.
1733                 openWithApp(currentWebView.getUrl());
1734
1735                 // Consume the event.
1736                 return true;
1737
1738             case R.id.open_with_browser:
1739                 // Open the URL with an outside browser.
1740                 openWithBrowser(currentWebView.getUrl());
1741
1742                 // Consume the event.
1743                 return true;
1744
1745             case R.id.proxy_through_orbot:
1746                 // Toggle the proxy through Orbot variable.
1747                 proxyThroughOrbot = !proxyThroughOrbot;
1748
1749                 // Apply the proxy through Orbot settings.
1750                 applyProxyThroughOrbot(true);
1751
1752                 // Consume the event.
1753                 return true;
1754
1755             case R.id.refresh:
1756                 if (menuItem.getTitle().equals(getString(R.string.refresh))) {  // The refresh button was pushed.
1757                     // Reload the current WebView.
1758                     currentWebView.reload();
1759                 } else {  // The stop button was pushed.
1760                     // Stop the loading of the WebView.
1761                     currentWebView.stopLoading();
1762                 }
1763
1764                 // Consume the event.
1765                 return true;
1766
1767             case R.id.ad_consent:
1768                 // Instantiate the ad consent dialog.
1769                 DialogFragment adConsentDialogFragment = new AdConsentDialog();
1770
1771                 // Display the ad consent dialog.
1772                 adConsentDialogFragment.show(getSupportFragmentManager(), getString(R.string.ad_consent));
1773
1774                 // Consume the event.
1775                 return true;
1776
1777             default:
1778                 // Don't consume the event.
1779                 return super.onOptionsItemSelected(menuItem);
1780         }
1781     }
1782
1783     // removeAllCookies is deprecated, but it is required for API < 21.
1784     @Override
1785     public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
1786         // Get the menu item ID.
1787         int menuItemId = menuItem.getItemId();
1788
1789         // Get a handle for the shared preferences.
1790         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
1791
1792         // Run the commands that correspond to the selected menu item.
1793         switch (menuItemId) {
1794             case R.id.clear_and_exit:
1795                 // Clear and exit Privacy Browser.
1796                 clearAndExit();
1797                 break;
1798
1799             case R.id.home:
1800                 // Select the homepage based on the proxy through Orbot status.
1801                 if (proxyThroughOrbot) {
1802                     // Load the Tor homepage.
1803                     loadUrl(sharedPreferences.getString("tor_homepage", getString(R.string.tor_homepage_default_value)));
1804                 } else {
1805                     // Load the normal homepage.
1806                     loadUrl(sharedPreferences.getString("homepage", getString(R.string.homepage_default_value)));
1807                 }
1808                 break;
1809
1810             case R.id.back:
1811                 if (currentWebView.canGoBack()) {
1812                     // Get the current web back forward list.
1813                     WebBackForwardList webBackForwardList = currentWebView.copyBackForwardList();
1814
1815                     // Get the previous entry URL.
1816                     String previousUrl = webBackForwardList.getItemAtIndex(webBackForwardList.getCurrentIndex() - 1).getUrl();
1817
1818                     // Apply the domain settings.
1819                     applyDomainSettings(currentWebView, previousUrl, false, false);
1820
1821                     // Load the previous website in the history.
1822                     currentWebView.goBack();
1823                 }
1824                 break;
1825
1826             case R.id.forward:
1827                 if (currentWebView.canGoForward()) {
1828                     // Get the current web back forward list.
1829                     WebBackForwardList webBackForwardList = currentWebView.copyBackForwardList();
1830
1831                     // Get the next entry URL.
1832                     String nextUrl = webBackForwardList.getItemAtIndex(webBackForwardList.getCurrentIndex() + 1).getUrl();
1833
1834                     // Apply the domain settings.
1835                     applyDomainSettings(currentWebView, nextUrl, false, false);
1836
1837                     // Load the next website in the history.
1838                     currentWebView.goForward();
1839                 }
1840                 break;
1841
1842             case R.id.history:
1843                 // Instantiate the URL history dialog.
1844                 DialogFragment urlHistoryDialogFragment = UrlHistoryDialog.loadBackForwardList(currentWebView.getWebViewFragmentId());
1845
1846                 // Show the URL history dialog.
1847                 urlHistoryDialogFragment.show(getSupportFragmentManager(), getString(R.string.history));
1848                 break;
1849
1850             case R.id.requests:
1851                 // Populate the resource requests.
1852                 RequestsActivity.resourceRequests = currentWebView.getResourceRequests();
1853
1854                 // Create an intent to launch the Requests activity.
1855                 Intent requestsIntent = new Intent(this, RequestsActivity.class);
1856
1857                 // Add the block third-party requests status to the intent.
1858                 requestsIntent.putExtra("block_all_third_party_requests", currentWebView.isBlocklistEnabled(NestedScrollWebView.THIRD_PARTY_REQUESTS));
1859
1860                 // Make it so.
1861                 startActivity(requestsIntent);
1862                 break;
1863
1864             case R.id.downloads:
1865                 // Launch the system Download Manager.
1866                 Intent downloadManagerIntent = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS);
1867
1868                 // Launch as a new task so that Download Manager and Privacy Browser show as separate windows in the recent tasks list.
1869                 downloadManagerIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1870
1871                 startActivity(downloadManagerIntent);
1872                 break;
1873
1874             case R.id.domains:
1875                 // Set the flag to reapply the domain settings on restart when returning from Domain Settings.
1876                 reapplyDomainSettingsOnRestart = true;
1877
1878                 // Launch the domains activity.
1879                 Intent domainsIntent = new Intent(this, DomainsActivity.class);
1880
1881                 // Add the extra information to the intent.
1882                 domainsIntent.putExtra("current_url", currentWebView.getUrl());
1883
1884                 // Get the current certificate.
1885                 SslCertificate sslCertificate = currentWebView.getCertificate();
1886
1887                 // Check to see if the SSL certificate is populated.
1888                 if (sslCertificate != null) {
1889                     // Extract the certificate to strings.
1890                     String issuedToCName = sslCertificate.getIssuedTo().getCName();
1891                     String issuedToOName = sslCertificate.getIssuedTo().getOName();
1892                     String issuedToUName = sslCertificate.getIssuedTo().getUName();
1893                     String issuedByCName = sslCertificate.getIssuedBy().getCName();
1894                     String issuedByOName = sslCertificate.getIssuedBy().getOName();
1895                     String issuedByUName = sslCertificate.getIssuedBy().getUName();
1896                     long startDateLong = sslCertificate.getValidNotBeforeDate().getTime();
1897                     long endDateLong = sslCertificate.getValidNotAfterDate().getTime();
1898
1899                     // Add the certificate to the intent.
1900                     domainsIntent.putExtra("ssl_issued_to_cname", issuedToCName);
1901                     domainsIntent.putExtra("ssl_issued_to_oname", issuedToOName);
1902                     domainsIntent.putExtra("ssl_issued_to_uname", issuedToUName);
1903                     domainsIntent.putExtra("ssl_issued_by_cname", issuedByCName);
1904                     domainsIntent.putExtra("ssl_issued_by_oname", issuedByOName);
1905                     domainsIntent.putExtra("ssl_issued_by_uname", issuedByUName);
1906                     domainsIntent.putExtra("ssl_start_date", startDateLong);
1907                     domainsIntent.putExtra("ssl_end_date", endDateLong);
1908                 }
1909
1910                 // Check to see if the current IP addresses have been received.
1911                 if (currentWebView.hasCurrentIpAddresses()) {
1912                     // Add the current IP addresses to the intent.
1913                     domainsIntent.putExtra("current_ip_addresses", currentWebView.getCurrentIpAddresses());
1914                 }
1915
1916                 // Make it so.
1917                 startActivity(domainsIntent);
1918                 break;
1919
1920             case R.id.settings:
1921                 // Set the flag to reapply app settings on restart when returning from Settings.
1922                 reapplyAppSettingsOnRestart = true;
1923
1924                 // Set the flag to reapply the domain settings on restart when returning from Settings.
1925                 reapplyDomainSettingsOnRestart = true;
1926
1927                 // Launch the settings activity.
1928                 Intent settingsIntent = new Intent(this, SettingsActivity.class);
1929                 startActivity(settingsIntent);
1930                 break;
1931
1932             case R.id.import_export:
1933                 // Launch the import/export activity.
1934                 Intent importExportIntent = new Intent (this, ImportExportActivity.class);
1935                 startActivity(importExportIntent);
1936                 break;
1937
1938             case R.id.logcat:
1939                 // Launch the logcat activity.
1940                 Intent logcatIntent = new Intent(this, LogcatActivity.class);
1941                 startActivity(logcatIntent);
1942                 break;
1943
1944             case R.id.guide:
1945                 // Launch `GuideActivity`.
1946                 Intent guideIntent = new Intent(this, GuideActivity.class);
1947                 startActivity(guideIntent);
1948                 break;
1949
1950             case R.id.about:
1951                 // Create an intent to launch the about activity.
1952                 Intent aboutIntent = new Intent(this, AboutActivity.class);
1953
1954                 // Create a string array for the blocklist versions.
1955                 String[] blocklistVersions = new String[] {easyList.get(0).get(0)[0], easyPrivacy.get(0).get(0)[0], fanboysAnnoyanceList.get(0).get(0)[0], fanboysSocialList.get(0).get(0)[0],
1956                         ultraList.get(0).get(0)[0], ultraPrivacy.get(0).get(0)[0]};
1957
1958                 // Add the blocklist versions to the intent.
1959                 aboutIntent.putExtra("blocklist_versions", blocklistVersions);
1960
1961                 // Make it so.
1962                 startActivity(aboutIntent);
1963                 break;
1964         }
1965
1966         // Get a handle for the drawer layout.
1967         DrawerLayout drawerLayout = findViewById(R.id.drawerlayout);
1968
1969         // Close the navigation drawer.
1970         drawerLayout.closeDrawer(GravityCompat.START);
1971         return true;
1972     }
1973
1974     @Override
1975     public void onPostCreate(Bundle savedInstanceState) {
1976         // Run the default commands.
1977         super.onPostCreate(savedInstanceState);
1978
1979         // Sync the state of the DrawerToggle after the default `onRestoreInstanceState()` has finished.  This creates the navigation drawer icon.
1980         actionBarDrawerToggle.syncState();
1981     }
1982
1983     @Override
1984     public void onConfigurationChanged(@NonNull Configuration newConfig) {
1985         // Run the default commands.
1986         super.onConfigurationChanged(newConfig);
1987
1988         // Get the status bar pixel size.
1989         int statusBarResourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
1990         int statusBarPixelSize = getResources().getDimensionPixelSize(statusBarResourceId);
1991
1992         // Get the resource density.
1993         float screenDensity = getResources().getDisplayMetrics().density;
1994
1995         // Recalculate the drawer header padding.
1996         drawerHeaderPaddingLeftAndRight = (int) (15 * screenDensity);
1997         drawerHeaderPaddingTop = statusBarPixelSize + (int) (4 * screenDensity);
1998         drawerHeaderPaddingBottom = (int) (8 * screenDensity);
1999
2000         // Reload the ad for the free flavor if not in full screen mode.
2001         if (BuildConfig.FLAVOR.contentEquals("free") && !inFullScreenBrowsingMode) {
2002             // Reload the ad.  The AdView is destroyed and recreated, which changes the ID, every time it is reloaded to handle possible rotations.
2003             AdHelper.loadAd(findViewById(R.id.adview), getApplicationContext(), getString(R.string.ad_unit_id));
2004         }
2005
2006         // `invalidateOptionsMenu` should recalculate the number of action buttons from the menu to display on the app bar, but it doesn't because of the this bug:
2007         // https://code.google.com/p/android/issues/detail?id=20493#c8
2008         // ActivityCompat.invalidateOptionsMenu(this);
2009     }
2010
2011     @Override
2012     public void onCreateContextMenu(ContextMenu menu, View view, ContextMenu.ContextMenuInfo menuInfo) {
2013         // Store the hit test result.
2014         final WebView.HitTestResult hitTestResult = currentWebView.getHitTestResult();
2015
2016         // Define the URL strings.
2017         final String imageUrl;
2018         final String linkUrl;
2019
2020         // Get handles for the system managers.
2021         final ClipboardManager clipboardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
2022         FragmentManager fragmentManager = getSupportFragmentManager();
2023         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
2024
2025         // Remove the lint errors below that the clipboard manager might be null.
2026         assert clipboardManager != null;
2027
2028         // Process the link according to the type.
2029         switch (hitTestResult.getType()) {
2030             // `SRC_ANCHOR_TYPE` is a link.
2031             case WebView.HitTestResult.SRC_ANCHOR_TYPE:
2032                 // Get the target URL.
2033                 linkUrl = hitTestResult.getExtra();
2034
2035                 // Set the target URL as the title of the `ContextMenu`.
2036                 menu.setHeaderTitle(linkUrl);
2037
2038                 // Add an Open in New Tab entry.
2039                 menu.add(R.string.open_in_new_tab).setOnMenuItemClickListener((MenuItem item) -> {
2040                     // Load the link URL in a new tab and move to it.
2041                     addNewTab(linkUrl, true);
2042
2043                     // Consume the event.
2044                     return true;
2045                 });
2046
2047                 // Add an Open in Background entry.
2048                 menu.add(R.string.open_in_background).setOnMenuItemClickListener((MenuItem item) -> {
2049                     // Load the link URL in a new tab but do not move to it.
2050                     addNewTab(linkUrl, false);
2051
2052                     // Consume the event.
2053                     return true;
2054                 });
2055
2056                 // Add an Open with App entry.
2057                 menu.add(R.string.open_with_app).setOnMenuItemClickListener((MenuItem item) -> {
2058                     openWithApp(linkUrl);
2059
2060                     // Consume the event.
2061                     return true;
2062                 });
2063
2064                 // Add an Open with Browser entry.
2065                 menu.add(R.string.open_with_browser).setOnMenuItemClickListener((MenuItem item) -> {
2066                     openWithBrowser(linkUrl);
2067
2068                     // Consume the event.
2069                     return true;
2070                 });
2071
2072                 // Add a Copy URL entry.
2073                 menu.add(R.string.copy_url).setOnMenuItemClickListener((MenuItem item) -> {
2074                     // Save the link URL in a `ClipData`.
2075                     ClipData srcAnchorTypeClipData = ClipData.newPlainText(getString(R.string.url), linkUrl);
2076
2077                     // Set the `ClipData` as the clipboard's primary clip.
2078                     clipboardManager.setPrimaryClip(srcAnchorTypeClipData);
2079
2080                     // Consume the event.
2081                     return true;
2082                 });
2083
2084                 // Add a Download URL entry.
2085                 menu.add(R.string.download_url).setOnMenuItemClickListener((MenuItem item) -> {
2086                     // Check if the download should be processed by an external app.
2087                     if (sharedPreferences.getBoolean("download_with_external_app", false)) {  // Download with an external app.
2088                         openUrlWithExternalApp(linkUrl);
2089                     } else {  // Download with Android's download manager.
2090                         // Check to see if the storage permission has already been granted.
2091                         if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_DENIED) {  // The storage permission needs to be requested.
2092                             // Store the variables for future use by `onRequestPermissionsResult()`.
2093                             downloadUrl = linkUrl;
2094                             downloadContentDisposition = "none";
2095                             downloadContentLength = -1;
2096
2097                             // Show a dialog if the user has previously denied the permission.
2098                             if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {  // Show a dialog explaining the request first.
2099                                 // Instantiate the download location permission alert dialog and set the download type to DOWNLOAD_FILE.
2100                                 DialogFragment downloadLocationPermissionDialogFragment = DownloadLocationPermissionDialog.downloadType(DownloadLocationPermissionDialog.DOWNLOAD_FILE);
2101
2102                                 // Show the download location permission alert dialog.  The permission will be requested when the the dialog is closed.
2103                                 downloadLocationPermissionDialogFragment.show(fragmentManager, getString(R.string.download_location));
2104                             } else {  // Show the permission request directly.
2105                                 // Request the permission.  The download dialog will be launched by `onRequestPermissionResult()`.
2106                                 ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, DOWNLOAD_FILE_REQUEST_CODE);
2107                             }
2108                         } else {  // The storage permission has already been granted.
2109                             // Get a handle for the download file alert dialog.
2110                             DialogFragment downloadFileDialogFragment = DownloadFileDialog.fromUrl(linkUrl, "none", -1);
2111
2112                             // Show the download file alert dialog.
2113                             downloadFileDialogFragment.show(fragmentManager, getString(R.string.download));
2114                         }
2115                     }
2116
2117                     // Consume the event.
2118                     return true;
2119                 });
2120
2121                 // Add a Cancel entry, which by default closes the context menu.
2122                 menu.add(R.string.cancel);
2123                 break;
2124
2125             case WebView.HitTestResult.EMAIL_TYPE:
2126                 // Get the target URL.
2127                 linkUrl = hitTestResult.getExtra();
2128
2129                 // Set the target URL as the title of the `ContextMenu`.
2130                 menu.setHeaderTitle(linkUrl);
2131
2132                 // Add a Write Email entry.
2133                 menu.add(R.string.write_email).setOnMenuItemClickListener(item -> {
2134                     // Use `ACTION_SENDTO` instead of `ACTION_SEND` so that only email programs are launched.
2135                     Intent emailIntent = new Intent(Intent.ACTION_SENDTO);
2136
2137                     // Parse the url and set it as the data for the `Intent`.
2138                     emailIntent.setData(Uri.parse("mailto:" + linkUrl));
2139
2140                     // `FLAG_ACTIVITY_NEW_TASK` opens the email program in a new task instead as part of Privacy Browser.
2141                     emailIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
2142
2143                     // Make it so.
2144                     startActivity(emailIntent);
2145
2146                     // Consume the event.
2147                     return true;
2148                 });
2149
2150                 // Add a Copy Email Address entry.
2151                 menu.add(R.string.copy_email_address).setOnMenuItemClickListener(item -> {
2152                     // Save the email address in a `ClipData`.
2153                     ClipData srcEmailTypeClipData = ClipData.newPlainText(getString(R.string.email_address), linkUrl);
2154
2155                     // Set the `ClipData` as the clipboard's primary clip.
2156                     clipboardManager.setPrimaryClip(srcEmailTypeClipData);
2157
2158                     // Consume the event.
2159                     return true;
2160                 });
2161
2162                 // Add a `Cancel` entry, which by default closes the `ContextMenu`.
2163                 menu.add(R.string.cancel);
2164                 break;
2165
2166             // `IMAGE_TYPE` is an image.
2167             case WebView.HitTestResult.IMAGE_TYPE:
2168                 // Get the image URL.
2169                 imageUrl = hitTestResult.getExtra();
2170
2171                 // Set the image URL as the title of the context menu.
2172                 menu.setHeaderTitle(imageUrl);
2173
2174                 // Add an Open in New Tab entry.
2175                 menu.add(R.string.open_image_in_new_tab).setOnMenuItemClickListener((MenuItem item) -> {
2176                     // Load the image in a new tab.
2177                     addNewTab(imageUrl, true);
2178
2179                     // Consume the event.
2180                     return true;
2181                 });
2182
2183                 // Add a View Image entry.
2184                 menu.add(R.string.view_image).setOnMenuItemClickListener(item -> {
2185                     // Load the image in the current tab.
2186                     loadUrl(imageUrl);
2187
2188                     // Consume the event.
2189                     return true;
2190                 });
2191
2192                 // Add a Download Image entry.
2193                 menu.add(R.string.download_image).setOnMenuItemClickListener((MenuItem item) -> {
2194                     // Check if the download should be processed by an external app.
2195                     if (sharedPreferences.getBoolean("download_with_external_app", false)) {  // Download with an external app.
2196                         openUrlWithExternalApp(imageUrl);
2197                     } else {  // Download with Android's download manager.
2198                         // Check to see if the storage permission has already been granted.
2199                         if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_DENIED) {  // The storage permission needs to be requested.
2200                             // Store the image URL for use by `onRequestPermissionResult()`.
2201                             downloadImageUrl = imageUrl;
2202
2203                             // Show a dialog if the user has previously denied the permission.
2204                             if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {  // Show a dialog explaining the request first.
2205                                 // Instantiate the download location permission alert dialog and set the download type to DOWNLOAD_IMAGE.
2206                                 DialogFragment downloadLocationPermissionDialogFragment = DownloadLocationPermissionDialog.downloadType(DownloadLocationPermissionDialog.DOWNLOAD_IMAGE);
2207
2208                                 // Show the download location permission alert dialog.  The permission will be requested when the dialog is closed.
2209                                 downloadLocationPermissionDialogFragment.show(fragmentManager, getString(R.string.download_location));
2210                             } else {  // Show the permission request directly.
2211                                 // Request the permission.  The download dialog will be launched by `onRequestPermissionResult()`.
2212                                 ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, DOWNLOAD_IMAGE_REQUEST_CODE);
2213                             }
2214                         } else {  // The storage permission has already been granted.
2215                             // Get a handle for the download image alert dialog.
2216                             DialogFragment downloadImageDialogFragment = DownloadImageDialog.imageUrl(imageUrl);
2217
2218                             // Show the download image alert dialog.
2219                             downloadImageDialogFragment.show(fragmentManager, getString(R.string.download));
2220                         }
2221                     }
2222
2223                     // Consume the event.
2224                     return true;
2225                 });
2226
2227                 // Add a Copy URL entry.
2228                 menu.add(R.string.copy_url).setOnMenuItemClickListener((MenuItem item) -> {
2229                     // Save the image URL in a clip data.
2230                     ClipData imageTypeClipData = ClipData.newPlainText(getString(R.string.url), imageUrl);
2231
2232                     // Set the clip data as the clipboard's primary clip.
2233                     clipboardManager.setPrimaryClip(imageTypeClipData);
2234
2235                     // Consume the event.
2236                     return true;
2237                 });
2238
2239                 // Add an Open with App entry.
2240                 menu.add(R.string.open_with_app).setOnMenuItemClickListener((MenuItem item) -> {
2241                     // Open the image URL with an external app.
2242                     openWithApp(imageUrl);
2243
2244                     // Consume the event.
2245                     return true;
2246                 });
2247
2248                 // Add an Open with Browser entry.
2249                 menu.add(R.string.open_with_browser).setOnMenuItemClickListener((MenuItem item) -> {
2250                     // Open the image URL with an external browser.
2251                     openWithBrowser(imageUrl);
2252
2253                     // Consume the event.
2254                     return true;
2255                 });
2256
2257                 // Add a Cancel entry, which by default closes the context menu.
2258                 menu.add(R.string.cancel);
2259                 break;
2260
2261             // `SRC_IMAGE_ANCHOR_TYPE` is an image that is also a link.
2262             case WebView.HitTestResult.SRC_IMAGE_ANCHOR_TYPE:
2263                 // Get the image URL.
2264                 imageUrl = hitTestResult.getExtra();
2265
2266                 // Instantiate a handler.
2267                 Handler handler = new Handler();
2268
2269                 // Get a message from the handler.
2270                 Message message = handler.obtainMessage();
2271
2272                 // Request the image details from the last touched node be returned in the message.
2273                 currentWebView.requestFocusNodeHref(message);
2274
2275                 // Get the link URL from the message data.
2276                 linkUrl = message.getData().getString("url");
2277
2278                 // Set the link URL as the title of the context menu.
2279                 menu.setHeaderTitle(linkUrl);
2280
2281                 // Add an Open in New Tab entry.
2282                 menu.add(R.string.open_in_new_tab).setOnMenuItemClickListener((MenuItem item) -> {
2283                     // Load the link URL in a new tab and move to it.
2284                     addNewTab(linkUrl, true);
2285
2286                     // Consume the event.
2287                     return true;
2288                 });
2289
2290                 // Add an Open in Background entry.
2291                 menu.add(R.string.open_in_background).setOnMenuItemClickListener((MenuItem item) -> {
2292                     // Lod the link URL in a new tab but do not move to it.
2293                     addNewTab(linkUrl, false);
2294
2295                     // Consume the event.
2296                     return true;
2297                 });
2298
2299                 // Add an Open Image in New Tab entry.
2300                 menu.add(R.string.open_image_in_new_tab).setOnMenuItemClickListener((MenuItem item) -> {
2301                     // Load the image in a new tab and move to it.
2302                     addNewTab(imageUrl, true);
2303
2304                     // Consume the event.
2305                     return true;
2306                 });
2307
2308                 // Add a View Image entry.
2309                 menu.add(R.string.view_image).setOnMenuItemClickListener((MenuItem item) -> {
2310                    // View the image in the current tab.
2311                    loadUrl(imageUrl);
2312
2313                    // Consume the event.
2314                    return true;
2315                 });
2316
2317                 // Add a Download Image entry.
2318                 menu.add(R.string.download_image).setOnMenuItemClickListener((MenuItem item) -> {
2319                     // Check if the download should be processed by an external app.
2320                     if (sharedPreferences.getBoolean("download_with_external_app", false)) {  // Download with an external app.
2321                         openUrlWithExternalApp(imageUrl);
2322                     } else {  // Download with Android's download manager.
2323                         // Check to see if the storage permission has already been granted.
2324                         if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_DENIED) {  // The storage permission needs to be requested.
2325                             // Store the image URL for use by `onRequestPermissionResult()`.
2326                             downloadImageUrl = imageUrl;
2327
2328                             // Show a dialog if the user has previously denied the permission.
2329                             if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {  // Show a dialog explaining the request first.
2330                                 // Instantiate the download location permission alert dialog and set the download type to DOWNLOAD_IMAGE.
2331                                 DialogFragment downloadLocationPermissionDialogFragment = DownloadLocationPermissionDialog.downloadType(DownloadLocationPermissionDialog.DOWNLOAD_IMAGE);
2332
2333                                 // Show the download location permission alert dialog.  The permission will be requested when the dialog is closed.
2334                                 downloadLocationPermissionDialogFragment.show(fragmentManager, getString(R.string.download_location));
2335                             } else {  // Show the permission request directly.
2336                                 // Request the permission.  The download dialog will be launched by `onRequestPermissionResult()`.
2337                                 ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, DOWNLOAD_IMAGE_REQUEST_CODE);
2338                             }
2339                         } else {  // The storage permission has already been granted.
2340                             // Get a handle for the download image alert dialog.
2341                             DialogFragment downloadImageDialogFragment = DownloadImageDialog.imageUrl(imageUrl);
2342
2343                             // Show the download image alert dialog.
2344                             downloadImageDialogFragment.show(fragmentManager, getString(R.string.download));
2345                         }
2346                     }
2347
2348                     // Consume the event.
2349                     return true;
2350                 });
2351
2352                 // Add a Copy URL entry.
2353                 menu.add(R.string.copy_url).setOnMenuItemClickListener((MenuItem item) -> {
2354                     // Save the link URL in a clip data.
2355                     ClipData srcImageAnchorTypeClipData = ClipData.newPlainText(getString(R.string.url), linkUrl);
2356
2357                     // Set the clip data as the clipboard's primary clip.
2358                     clipboardManager.setPrimaryClip(srcImageAnchorTypeClipData);
2359
2360                     // Consume the event.
2361                     return true;
2362                 });
2363
2364                 // Add an Open with App entry.
2365                 menu.add(R.string.open_with_app).setOnMenuItemClickListener((MenuItem item) -> {
2366                     // Open the link URL with an external app.
2367                     openWithApp(linkUrl);
2368
2369                     // Consume the event.
2370                     return true;
2371                 });
2372
2373                 // Add an Open with Browser entry.
2374                 menu.add(R.string.open_with_browser).setOnMenuItemClickListener((MenuItem item) -> {
2375                     // Open the link URL with an external browser.
2376                     openWithBrowser(linkUrl);
2377
2378                     // Consume the event.
2379                     return true;
2380                 });
2381
2382                 // Add a cancel entry, which by default closes the context menu.
2383                 menu.add(R.string.cancel);
2384                 break;
2385         }
2386     }
2387
2388     @Override
2389     public void onCreateBookmark(DialogFragment dialogFragment, Bitmap favoriteIconBitmap) {
2390         // Get a handle for the bookmarks list view.
2391         ListView bookmarksListView = findViewById(R.id.bookmarks_drawer_listview);
2392
2393         // Get the dialog.
2394         Dialog dialog = dialogFragment.getDialog();
2395
2396         // Remove the incorrect lint warning below that the dialog might be null.
2397         assert dialog != null;
2398
2399         // Get the views from the dialog fragment.
2400         EditText createBookmarkNameEditText = dialog.findViewById(R.id.create_bookmark_name_edittext);
2401         EditText createBookmarkUrlEditText = dialog.findViewById(R.id.create_bookmark_url_edittext);
2402
2403         // Extract the strings from the edit texts.
2404         String bookmarkNameString = createBookmarkNameEditText.getText().toString();
2405         String bookmarkUrlString = createBookmarkUrlEditText.getText().toString();
2406
2407         // Create a favorite icon byte array output stream.
2408         ByteArrayOutputStream favoriteIconByteArrayOutputStream = new ByteArrayOutputStream();
2409
2410         // Convert the favorite icon bitmap to a byte array.  `0` is for lossless compression (the only option for a PNG).
2411         favoriteIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, favoriteIconByteArrayOutputStream);
2412
2413         // Convert the favorite icon byte array stream to a byte array.
2414         byte[] favoriteIconByteArray = favoriteIconByteArrayOutputStream.toByteArray();
2415
2416         // Display the new bookmark below the current items in the (0 indexed) list.
2417         int newBookmarkDisplayOrder = bookmarksListView.getCount();
2418
2419         // Create the bookmark.
2420         bookmarksDatabaseHelper.createBookmark(bookmarkNameString, bookmarkUrlString, currentBookmarksFolder, newBookmarkDisplayOrder, favoriteIconByteArray);
2421
2422         // Update the bookmarks cursor with the current contents of this folder.
2423         bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
2424
2425         // Update the list view.
2426         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
2427
2428         // Scroll to the new bookmark.
2429         bookmarksListView.setSelection(newBookmarkDisplayOrder);
2430     }
2431
2432     @Override
2433     public void onCreateBookmarkFolder(DialogFragment dialogFragment, Bitmap favoriteIconBitmap) {
2434         // Get a handle for the bookmarks list view.
2435         ListView bookmarksListView = findViewById(R.id.bookmarks_drawer_listview);
2436
2437         // Get the dialog.
2438         Dialog dialog = dialogFragment.getDialog();
2439
2440         // Remove the incorrect lint warning below that the dialog might be null.
2441         assert dialog != null;
2442
2443         // Get handles for the views in the dialog fragment.
2444         EditText createFolderNameEditText = dialog.findViewById(R.id.create_folder_name_edittext);
2445         RadioButton defaultFolderIconRadioButton = dialog.findViewById(R.id.create_folder_default_icon_radiobutton);
2446         ImageView folderIconImageView = dialog.findViewById(R.id.create_folder_default_icon);
2447
2448         // Get new folder name string.
2449         String folderNameString = createFolderNameEditText.getText().toString();
2450
2451         // Create a folder icon bitmap.
2452         Bitmap folderIconBitmap;
2453
2454         // Set the folder icon bitmap according to the dialog.
2455         if (defaultFolderIconRadioButton.isChecked()) {  // Use the default folder icon.
2456             // Get the default folder icon drawable.
2457             Drawable folderIconDrawable = folderIconImageView.getDrawable();
2458
2459             // Convert the folder icon drawable to a bitmap drawable.
2460             BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
2461
2462             // Convert the folder icon bitmap drawable to a bitmap.
2463             folderIconBitmap = folderIconBitmapDrawable.getBitmap();
2464         } else {  // Use the WebView favorite icon.
2465             // Copy the favorite icon bitmap to the folder icon bitmap.
2466             folderIconBitmap = favoriteIconBitmap;
2467         }
2468
2469         // Create a folder icon byte array output stream.
2470         ByteArrayOutputStream folderIconByteArrayOutputStream = new ByteArrayOutputStream();
2471
2472         // Convert the folder icon bitmap to a byte array.  `0` is for lossless compression (the only option for a PNG).
2473         folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, folderIconByteArrayOutputStream);
2474
2475         // Convert the folder icon byte array stream to a byte array.
2476         byte[] folderIconByteArray = folderIconByteArrayOutputStream.toByteArray();
2477
2478         // Move all the bookmarks down one in the display order.
2479         for (int i = 0; i < bookmarksListView.getCount(); i++) {
2480             int databaseId = (int) bookmarksListView.getItemIdAtPosition(i);
2481             bookmarksDatabaseHelper.updateDisplayOrder(databaseId, i + 1);
2482         }
2483
2484         // Create the folder, which will be placed at the top of the `ListView`.
2485         bookmarksDatabaseHelper.createFolder(folderNameString, currentBookmarksFolder, folderIconByteArray);
2486
2487         // Update the bookmarks cursor with the current contents of this folder.
2488         bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
2489
2490         // Update the `ListView`.
2491         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
2492
2493         // Scroll to the new folder.
2494         bookmarksListView.setSelection(0);
2495     }
2496
2497     @Override
2498     public void onSaveBookmark(DialogFragment dialogFragment, int selectedBookmarkDatabaseId, Bitmap favoriteIconBitmap) {
2499         // Get the dialog.
2500         Dialog dialog = dialogFragment.getDialog();
2501
2502         // Remove the incorrect lint warning below that the dialog might be null.
2503         assert dialog != null;
2504
2505         // Get handles for the views from the dialog.
2506         EditText editBookmarkNameEditText = dialog.findViewById(R.id.edit_bookmark_name_edittext);
2507         EditText editBookmarkUrlEditText = dialog.findViewById(R.id.edit_bookmark_url_edittext);
2508         RadioButton currentBookmarkIconRadioButton = dialog.findViewById(R.id.edit_bookmark_current_icon_radiobutton);
2509
2510         // Store the bookmark strings.
2511         String bookmarkNameString = editBookmarkNameEditText.getText().toString();
2512         String bookmarkUrlString = editBookmarkUrlEditText.getText().toString();
2513
2514         // Update the bookmark.
2515         if (currentBookmarkIconRadioButton.isChecked()) {  // Update the bookmark without changing the favorite icon.
2516             bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString);
2517         } else {  // Update the bookmark using the `WebView` favorite icon.
2518             // Create a favorite icon byte array output stream.
2519             ByteArrayOutputStream newFavoriteIconByteArrayOutputStream = new ByteArrayOutputStream();
2520
2521             // Convert the favorite icon bitmap to a byte array.  `0` is for lossless compression (the only option for a PNG).
2522             favoriteIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, newFavoriteIconByteArrayOutputStream);
2523
2524             // Convert the favorite icon byte array stream to a byte array.
2525             byte[] newFavoriteIconByteArray = newFavoriteIconByteArrayOutputStream.toByteArray();
2526
2527             //  Update the bookmark and the favorite icon.
2528             bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString, newFavoriteIconByteArray);
2529         }
2530
2531         // Update the bookmarks cursor with the current contents of this folder.
2532         bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
2533
2534         // Update the list view.
2535         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
2536     }
2537
2538     @Override
2539     public void onSaveBookmarkFolder(DialogFragment dialogFragment, int selectedFolderDatabaseId, Bitmap favoriteIconBitmap) {
2540         // Get the dialog.
2541         Dialog dialog = dialogFragment.getDialog();
2542
2543         // Remove the incorrect lint warning below that the dialog might be null.
2544         assert dialog != null;
2545
2546         // Get handles for the views from `dialogFragment`.
2547         EditText editFolderNameEditText = dialog.findViewById(R.id.edit_folder_name_edittext);
2548         RadioButton currentFolderIconRadioButton = dialog.findViewById(R.id.edit_folder_current_icon_radiobutton);
2549         RadioButton defaultFolderIconRadioButton = dialog.findViewById(R.id.edit_folder_default_icon_radiobutton);
2550         ImageView defaultFolderIconImageView = dialog.findViewById(R.id.edit_folder_default_icon_imageview);
2551
2552         // Get the new folder name.
2553         String newFolderNameString = editFolderNameEditText.getText().toString();
2554
2555         // Check if the favorite icon has changed.
2556         if (currentFolderIconRadioButton.isChecked()) {  // Only the name has changed.
2557             // Update the name in the database.
2558             bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, oldFolderNameString, newFolderNameString);
2559         } else if (!currentFolderIconRadioButton.isChecked() && newFolderNameString.equals(oldFolderNameString)) {  // Only the icon has changed.
2560             // Create the new folder icon Bitmap.
2561             Bitmap folderIconBitmap;
2562
2563             // Populate the new folder icon bitmap.
2564             if (defaultFolderIconRadioButton.isChecked()) {
2565                 // Get the default folder icon drawable.
2566                 Drawable folderIconDrawable = defaultFolderIconImageView.getDrawable();
2567
2568                 // Convert the folder icon drawable to a bitmap drawable.
2569                 BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
2570
2571                 // Convert the folder icon bitmap drawable to a bitmap.
2572                 folderIconBitmap = folderIconBitmapDrawable.getBitmap();
2573             } else {  // Use the `WebView` favorite icon.
2574                 // Copy the favorite icon bitmap to the folder icon bitmap.
2575                 folderIconBitmap = favoriteIconBitmap;
2576             }
2577
2578             // Create a folder icon byte array output stream.
2579             ByteArrayOutputStream newFolderIconByteArrayOutputStream = new ByteArrayOutputStream();
2580
2581             // Convert the folder icon bitmap to a byte array.  `0` is for lossless compression (the only option for a PNG).
2582             folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, newFolderIconByteArrayOutputStream);
2583
2584             // Convert the folder icon byte array stream to a byte array.
2585             byte[] newFolderIconByteArray = newFolderIconByteArrayOutputStream.toByteArray();
2586
2587             // Update the folder icon in the database.
2588             bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, newFolderIconByteArray);
2589         } else {  // The folder icon and the name have changed.
2590             // Get the new folder icon `Bitmap`.
2591             Bitmap folderIconBitmap;
2592             if (defaultFolderIconRadioButton.isChecked()) {
2593                 // Get the default folder icon drawable.
2594                 Drawable folderIconDrawable = defaultFolderIconImageView.getDrawable();
2595
2596                 // Convert the folder icon drawable to a bitmap drawable.
2597                 BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
2598
2599                 // Convert the folder icon bitmap drawable to a bitmap.
2600                 folderIconBitmap = folderIconBitmapDrawable.getBitmap();
2601             } else {  // Use the `WebView` favorite icon.
2602                 // Copy the favorite icon bitmap to the folder icon bitmap.
2603                 folderIconBitmap = favoriteIconBitmap;
2604             }
2605
2606             // Create a folder icon byte array output stream.
2607             ByteArrayOutputStream newFolderIconByteArrayOutputStream = new ByteArrayOutputStream();
2608
2609             // Convert the folder icon bitmap to a byte array.  `0` is for lossless compression (the only option for a PNG).
2610             folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, newFolderIconByteArrayOutputStream);
2611
2612             // Convert the folder icon byte array stream to a byte array.
2613             byte[] newFolderIconByteArray = newFolderIconByteArrayOutputStream.toByteArray();
2614
2615             // Update the folder name and icon in the database.
2616             bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, oldFolderNameString, newFolderNameString, newFolderIconByteArray);
2617         }
2618
2619         // Update the bookmarks cursor with the current contents of this folder.
2620         bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
2621
2622         // Update the `ListView`.
2623         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
2624     }
2625
2626     @Override
2627     public void onCloseDownloadLocationPermissionDialog(int downloadType) {
2628         switch (downloadType) {
2629             case DownloadLocationPermissionDialog.DOWNLOAD_FILE:
2630                 // Request the WRITE_EXTERNAL_STORAGE permission with a file request code.
2631                 ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE}, DOWNLOAD_FILE_REQUEST_CODE);
2632                 break;
2633
2634             case DownloadLocationPermissionDialog.DOWNLOAD_IMAGE:
2635                 // Request the WRITE_EXTERNAL_STORAGE permission with an image request code.
2636                 ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE}, DOWNLOAD_IMAGE_REQUEST_CODE);
2637                 break;
2638         }
2639     }
2640
2641     @Override
2642     public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
2643         // Get a handle for the fragment manager.