X-Git-Url: https://gitweb.stoutner.com/?p=PrivacyBrowserAndroid.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Factivities%2FMainWebViewActivity.java;h=4193364de5c0041abc3b31948a7272f19b0ef80c;hp=e08fa8fa764a13d8e0ce06ce81b405dfc464d9ae;hb=fd2c21ea8241dce9c86a3213b9b9e325d5e7ce4a;hpb=54c70ca476ba2f53ae274df1ac725be3919e8f56

diff --git a/app/src/main/java/com/stoutner/privacybrowser/activities/MainWebViewActivity.java b/app/src/main/java/com/stoutner/privacybrowser/activities/MainWebViewActivity.java
index e08fa8fa..4193364d 100644
--- a/app/src/main/java/com/stoutner/privacybrowser/activities/MainWebViewActivity.java
+++ b/app/src/main/java/com/stoutner/privacybrowser/activities/MainWebViewActivity.java
@@ -71,7 +71,6 @@ import android.webkit.CookieManager;
 import android.webkit.HttpAuthHandler;
 import android.webkit.SslErrorHandler;
 import android.webkit.ValueCallback;
-import android.webkit.WebBackForwardList;
 import android.webkit.WebChromeClient;
 import android.webkit.WebResourceResponse;
 import android.webkit.WebSettings;
@@ -124,7 +123,6 @@ import com.stoutner.privacybrowser.dialogs.DownloadLocationPermissionDialog;
 import com.stoutner.privacybrowser.dialogs.EditBookmarkDialog;
 import com.stoutner.privacybrowser.dialogs.EditBookmarkFolderDialog;
 import com.stoutner.privacybrowser.dialogs.HttpAuthenticationDialog;
-import com.stoutner.privacybrowser.dialogs.PinnedMismatchDialog;
 import com.stoutner.privacybrowser.dialogs.SslCertificateErrorDialog;
 import com.stoutner.privacybrowser.dialogs.UrlHistoryDialog;
 import com.stoutner.privacybrowser.dialogs.ViewSslCertificateDialog;
@@ -154,30 +152,20 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
-// TODO.  Store up reloads for tabs that are not visible.
 // TODO.  New tabs are white in dark mode.
+// TODO.  Find on page.
 
 // AppCompatActivity from android.support.v7.app.AppCompatActivity must be used to have access to the SupportActionBar until the minimum API is >= 21.
 public class MainWebViewActivity extends AppCompatActivity implements CreateBookmarkDialog.CreateBookmarkListener, CreateBookmarkFolderDialog.CreateBookmarkFolderListener,
         DownloadFileDialog.DownloadFileListener, DownloadImageDialog.DownloadImageListener, DownloadLocationPermissionDialog.DownloadLocationPermissionDialogListener, EditBookmarkDialog.EditBookmarkListener,
-        EditBookmarkFolderDialog.EditBookmarkFolderListener, HttpAuthenticationDialog.HttpAuthenticationListener, NavigationView.OnNavigationItemSelectedListener, WebViewTabFragment.NewTabListener,
-        PinnedMismatchDialog.PinnedMismatchListener, SslCertificateErrorDialog.SslCertificateErrorListener, UrlHistoryDialog.UrlHistoryListener {
-
-    // `darkTheme` is public static so it can be accessed from everywhere.
-    public static boolean darkTheme;
-
-    // `allowScreenshots` is public static so it can be accessed from everywhere.  It is also used in `onCreate()`.
-    public static boolean allowScreenshots;
+        EditBookmarkFolderDialog.EditBookmarkFolderListener, NavigationView.OnNavigationItemSelectedListener, WebViewTabFragment.NewTabListener {
 
     // `orbotStatus` is public static so it can be accessed from `OrbotProxyHelper`.  It is also used in `onCreate()`, `onResume()`, and `applyProxyThroughOrbot()`.
     public static String orbotStatus;
 
-    // The WebView pager adapter is accessed from `PinnedMismatchDialog`.  It is also used in `onCreate()`, `onResume()`, and `addTab()`.
+    // The WebView pager adapter is accessed from `HttpAuthenticationDialog`, `PinnedMismatchDialog`, and `SslCertificateErrorDialog`.  It is also used in `onCreate()`, `onResume()`, and `addTab()`.
     public static WebViewPagerAdapter webViewPagerAdapter;
 
-    // `reloadOnRestart` is public static so it can be accessed from `SettingsFragment`.  It is used in `onRestart()`
-    public static boolean reloadOnRestart;
-
     // The load URL on restart variables are public static so they can be accessed from `BookmarksActivity`.  They are used in `onRestart()`.
     public static boolean loadUrlOnRestart;
     public static String urlToLoadOnRestart;
@@ -185,13 +173,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `restartFromBookmarksActivity` is public static so it can be accessed from `BookmarksActivity`.  It is also used in `onRestart()`.
     public static boolean restartFromBookmarksActivity;
 
-    // The blocklist versions are public static so they can be accessed from `AboutTabFragment`.  They are also used in `onCreate()`.
-    public static String easyListVersion;
-    public static String easyPrivacyVersion;
-    public static String fanboysAnnoyanceVersion;
-    public static String fanboysSocialVersion;
-    public static String ultraPrivacyVersion;
-
     // `currentBookmarksFolder` is public static so it can be accessed from `BookmarksActivity`.  It is also used in `onCreate()`, `onBackPressed()`, `onCreateBookmark()`, `onCreateBookmarkFolder()`,
     // `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, and `loadBookmarksFolder()`.
     public static String currentBookmarksFolder;
@@ -206,9 +187,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
 
 
-    // `navigatingHistory` is used in `onCreate()`, `onNavigationItemSelected()`, `onSslMismatchBack()`, and `applyDomainSettings()`.
-    private boolean navigatingHistory;  // TODO.
-
     // The current WebView is used in `onCreate()`, `onPrepareOptionsMenu()`, `onOptionsItemSelected()`, `onNavigationItemSelected()`, `onRestart()`, `onCreateContextMenu()`, `findPreviousOnPage()`,
     // `findNextOnPage()`, `closeFindOnPage()`, `loadUrlFromTextBox()`, `onSslMismatchBack()`, `applyProxyThroughOrbot()`, and `applyDomainSettings()`.
     private NestedScrollWebView currentWebView;
@@ -216,55 +194,36 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `customHeader` is used in `onCreate()`, `onOptionsItemSelected()`, `onCreateContextMenu()`, and `loadUrl()`.
     private final Map<String, String> customHeaders = new HashMap<>();
 
-    // `firstPartyCookiesEnabled` is used in `onCreate()`, `onPrepareOptionsMenu()`, `onOptionsItemSelected()`, `onDownloadImage()`, `onDownloadFile()`, and `applyDomainSettings()`.
-    private boolean firstPartyCookiesEnabled;
-
-    // 'homepage' is used in `onCreate()`, `onNavigationItemSelected()`, and `applyProxyThroughOrbot()`.
-    private String homepage;  // TODO ?
-
-    // `searchURL` is used in `loadURLFromTextBox()` and `applyProxyThroughOrbot()`.
-    private String searchURL;  // TODO ?
+    // The search URL is set in `applyProxyThroughOrbot()` and used in `onCreate()`, `onNewIntent()`, `loadURLFromTextBox()`, and `initializeWebView()`.
+    private String searchURL;
 
     // The options menu is set in `onCreateOptionsMenu()` and used in `onOptionsItemSelected()`, `updatePrivacyIcons()`, and `initializeWebView()`.
     private Menu optionsMenu;
 
-    // TODO.  This could probably be removed.
-    // The blocklist helper is used in `onCreate()` and `WebViewPagerAdapter`.
-    private BlockListHelper blockListHelper;
-
-    // The blocklists are populated in `onCreate()` and accessed from `WebViewPagerAdapter`.
+    // The blocklists are populated in `onCreate()` and accessed from `initializeWebView()`.
     private ArrayList<List<String[]>> easyList;
     private ArrayList<List<String[]>> easyPrivacy;
     private ArrayList<List<String[]>> fanboysAnnoyanceList;
     private ArrayList<List<String[]>> fanboysSocialList;
     private ArrayList<List<String[]>> ultraPrivacy;
 
-    // The blocklist menu items are used in `onCreateOptionsMenu()`, `onPrepareOptionsMenu()`, and `initializeWebView()`.  // TODO.
-    private MenuItem blocklistsMenuItem;
-    private MenuItem easyListMenuItem;
-    private MenuItem easyPrivacyMenuItem;
-    private MenuItem fanboysAnnoyanceListMenuItem;
-    private MenuItem fanboysSocialBlockingListMenuItem;
-    private MenuItem ultraPrivacyMenuItem;
-    private MenuItem blockAllThirdPartyRequestsMenuItem;
-
     // `webViewDefaultUserAgent` is used in `onCreate()` and `onPrepareOptionsMenu()`.
     private String webViewDefaultUserAgent;
 
     // `proxyThroughOrbot` is used in `onRestart()`, `onOptionsItemSelected()`, `applyAppSettings()`, and `applyProxyThroughOrbot()`.
     private boolean proxyThroughOrbot;
 
-    // `incognitoModeEnabled` is used in `onCreate()` and `applyAppSettings()`.
-    private boolean incognitoModeEnabled;  // TODO.
+    // The incognito mode is set in `applyAppSettings()` and used in `initializeWebView()`.
+    private boolean incognitoModeEnabled;
 
-    // `fullScreenBrowsingModeEnabled` is used in `onCreate()` and `applyAppSettings()`.
-    private boolean fullScreenBrowsingModeEnabled;  // TODO.
+    // The full screen browsing mode tracker is set it `applyAppSettings()` and used in `initializeWebView()`.
+    private boolean fullScreenBrowsingModeEnabled;
 
     // `inFullScreenBrowsingMode` is used in `onCreate()`, `onConfigurationChanged()`, and `applyAppSettings()`.
     private boolean inFullScreenBrowsingMode;
 
-    // Hide app bar is used in `onCreate()` and `applyAppSettings()`.
-    private boolean hideAppBar;  // TODO.
+    // The hide app bar tracker is used in `applyAppSettings()` and `initializeWebView()`.
+    private boolean hideAppBar;
 
     // `reapplyDomainSettingsOnRestart` is used in `onCreate()`, `onOptionsItemSelected()`, `onNavigationItemSelected()`, `onRestart()`, and `onAddDomain()`, .
     private boolean reapplyDomainSettingsOnRestart;
@@ -275,24 +234,12 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `displayingFullScreenVideo` is used in `onCreate()` and `onResume()`.
     private boolean displayingFullScreenVideo;
 
-    // `downloadWithExternalApp` is used in `onCreate()`, `onCreateContextMenu()`, and `applyDomainSettings()`.
-    private boolean downloadWithExternalApp;  // TODO.
-
     // `orbotStatusBroadcastReceiver` is used in `onCreate()` and `onDestroy()`.
     private BroadcastReceiver orbotStatusBroadcastReceiver;
 
     // `waitingForOrbot` is used in `onCreate()`, `onResume()`, and `applyProxyThroughOrbot()`.
     private boolean waitingForOrbot;
 
-    // `domainSettingsJavaScriptEnabled` is used in `onOptionsItemSelected()` and `applyDomainSettings()`.
-    private Boolean domainSettingsJavaScriptEnabled;  // TODO.
-
-    // `waitingForOrbotHtmlString` is used in `onCreate()` and `applyProxyThroughOrbot()`.
-    private String waitingForOrbotHtmlString;  // TODO.
-
-    // `privateDataDirectoryString` is used in `onCreate()`, `onOptionsItemSelected()`, and `onNavigationItemSelected()`.
-    private String privateDataDirectoryString;  // TODO.
-
     // The action bar drawer toggle is initialized in `onCreate()` and used in `onResume()`.
     private ActionBarDrawerToggle actionBarDrawerToggle;
 
@@ -306,12 +253,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     private int drawerHeaderPaddingTop;
     private int drawerHeaderPaddingBottom;
 
-    // `sslErrorHandler` is used in `onCreate()`, `onSslErrorCancel()`, and `onSslErrorProceed`.
-    private SslErrorHandler sslErrorHandler;  // TODO.
-
-    // `httpAuthHandler` is used in `onCreate()`, `onHttpAuthenticationCancel()`, and `onHttpAuthenticationProceed()`.
-    private static HttpAuthHandler httpAuthHandler;  // TODO.
-
     // `bookmarksDatabaseHelper` is used in `onCreate()`, `onDestroy`, `onOptionsItemSelected()`, `onCreateBookmark()`, `onCreateBookmarkFolder()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`,
     // and `loadBookmarksFolder()`.
     private BookmarksDatabaseHelper bookmarksDatabaseHelper;
@@ -348,8 +289,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
 
         // Get the theme and screenshot preferences.
-        darkTheme = sharedPreferences.getBoolean("dark_theme", false);
-        allowScreenshots = sharedPreferences.getBoolean("allow_screenshots", false);
+        boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false);
+        boolean allowScreenshots = sharedPreferences.getBoolean("allow_screenshots", false);
 
         // Disable screenshots if not allowed.
         if (!allowScreenshots) {
@@ -430,9 +371,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             }
         });
 
-        // Set `waitingForOrbotHTMLString`.
-        waitingForOrbotHtmlString = "<html><body><br/><center><h1>" + getString(R.string.waiting_for_orbot) + "</h1></center></body></html>";
-
         // Initialize the Orbot status and the waiting for Orbot trackers.
         orbotStatus = "unknown";
         waitingForOrbot = false;
@@ -474,8 +412,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                         // Load the URL from the intent.
                         loadUrl(launchingIntentUriData.toString());
                     } else {  // The is no URL in the intent.
-                        // Load the homepage.
-                        loadUrl(homepage);
+                        // Select the homepage based on the proxy through Orbot status.
+                        if (proxyThroughOrbot) {
+                            // Load the Tor homepage.
+                            loadUrl(sharedPreferences.getString("tor_homepage", getString(R.string.tor_homepage_default_value)));
+                        } else {
+                            // Load the normal homepage.
+                            loadUrl(sharedPreferences.getString("homepage", getString(R.string.homepage_default_value)));
+                        }
                     }
                 }
             }
@@ -484,8 +428,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Register `orbotStatusBroadcastReceiver` on `this` context.
         this.registerReceiver(orbotStatusBroadcastReceiver, new IntentFilter("org.torproject.android.intent.action.STATUS"));
 
-        // Instantiate the block list helper.
-        blockListHelper = new BlockListHelper();
+        // Instantiate the blocklist helper.
+        BlockListHelper blockListHelper = new BlockListHelper();
 
         // Parse the block lists.
         easyList = blockListHelper.parseBlockList(getAssets(), "blocklists/easylist.txt");
@@ -494,13 +438,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         fanboysSocialList = blockListHelper.parseBlockList(getAssets(), "blocklists/fanboy-social.txt");
         ultraPrivacy = blockListHelper.parseBlockList(getAssets(), "blocklists/ultraprivacy.txt");
 
-        // Store the list versions.
-        easyListVersion = easyList.get(0).get(0)[0];
-        easyPrivacyVersion = easyPrivacy.get(0).get(0)[0];
-        fanboysAnnoyanceVersion = fanboysAnnoyanceList.get(0).get(0)[0];
-        fanboysSocialVersion = fanboysSocialList.get(0).get(0)[0];
-        ultraPrivacyVersion = ultraPrivacy.get(0).get(0)[0];
-
         // Get handles for views that need to be modified.
         DrawerLayout drawerLayout = findViewById(R.id.drawerlayout);
         NavigationView navigationView = findViewById(R.id.navigationview);
@@ -545,16 +482,25 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Set the current WebView.
                 setCurrentWebView(position);
 
-                // Select the corresponding tab if it does not match the currently selected page.  This will happen if the page was scrolled via swiping in the view pager.
+                // Select the corresponding tab if it does not match the currently selected page.  This will happen if the page was scrolled via swiping in the view pager or by creating a new tab.
                 if (tabLayout.getSelectedTabPosition() != position) {
-                    // Get a handle for the corresponding tab.
-                    TabLayout.Tab correspondingTab = tabLayout.getTabAt(position);
+                    // Create a handler to select the tab.
+                    Handler selectTabHandler = new Handler();
 
-                    // Assert that the corresponding tab is not null.
-                    assert correspondingTab != null;
+                    // Create a runnable select the new tab.
+                    Runnable selectTabRunnable = () -> {
+                        // Get a handle for the tab.
+                        TabLayout.Tab tab = tabLayout.getTabAt(position);
 
-                    // Select the corresponding tab.
-                    correspondingTab.select();
+                        // Assert that the tab is not null.
+                        assert tab != null;
+
+                        // Select the tab.
+                        tab.select();
+                    };
+
+                    // Select the tab layout after 100 milliseconds, which leaves enough time for a new tab to be created.
+                    selectTabHandler.postDelayed(selectTabRunnable, 100);
                 }
             }
 
@@ -829,16 +775,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Initialize the default preference values the first time the program is run.  `false` keeps this command from resetting any current preferences back to default.
         PreferenceManager.setDefaultValues(this, R.xml.preferences, false);
 
-        // Store the application's private data directory.
-        privateDataDirectoryString = getApplicationInfo().dataDir;
-        // `dataDir` will vary, but will be something like `/data/user/0/com.stoutner.privacybrowser.standard`, which links to `/data/data/com.stoutner.privacybrowser.standard`.
-
-        // Initialize `inFullScreenBrowsingMode`, which is always false at this point because Privacy Browser never starts in full screen browsing mode.
-        inFullScreenBrowsingMode = false;
-
-        // Initialize the privacy settings variables.
-        firstPartyCookiesEnabled = false;
-
         // Inflate a bare WebView to get the default user agent.  It is not used to render content on the screen.
         @SuppressLint("InflateParams") View webViewLayout = getLayoutInflater().inflate(R.layout.bare_webview, null, false);
 
@@ -928,51 +864,41 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
         // Apply the app settings if returning from the Settings activity.
         if (reapplyAppSettingsOnRestart) {
+            // Reset the reapply app settings on restart tracker.
+            reapplyAppSettingsOnRestart = false;
+
             // Apply the app settings.
             applyAppSettings();
+        }
 
-            // Reload the webpage to handle changes to night mode and displaying of images.
-            if (reloadOnRestart) {
-                // Reload the WebViews.
-                for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
-                    // Get the WebView tab fragment.
-                    WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
-
-                    // Get the fragment view.
-                    View fragmentView = webViewTabFragment.getView();
-
-                    // Only reload the WebViews if they exist.
-                    if (fragmentView != null) {
-                        // Get the nested scroll WebView from the tab fragment.
-                        NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
-
-                        // Reload the WebView.  This doesn't seem to work if for WebViews that aren't visible.
-                        nestedScrollWebView.reload();
-                    }
-                }
+        // Apply the domain settings if returning from the settings or domains activity.
+        if (reapplyDomainSettingsOnRestart) {
+            // Reset the reapply domain settings on restart tracker.
+            reapplyDomainSettingsOnRestart = false;
 
-                // Reset `reloadOnRestartBoolean`.
-                reloadOnRestart = false;
-            }
+            // Reapply the domain settings for each tab.
+            for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
+                // Get the WebView tab fragment.
+                WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
 
-            // Reset the return from settings flag.
-            reapplyAppSettingsOnRestart = false;
-        }
+                // Get the fragment view.
+                View fragmentView = webViewTabFragment.getView();
 
-        // TODO apply to all the tabs.
-        // Apply the domain settings if returning from the Domains activity.
-        if (reapplyDomainSettingsOnRestart) {
-            // Reset the current domain name so the domain settings will be reapplied.
-            currentWebView.resetCurrentDomainName();
+                // Only reload the WebViews if they exist.
+                if (fragmentView != null) {
+                    // Get the nested scroll WebView from the tab fragment.
+                    NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
 
-            // Reapply the domain settings.
-            applyDomainSettings(currentWebView, currentWebView.getUrl(), false, true);  // TODO.
+                    // Reset the current domain name so the domain settings will be reapplied.
+                    nestedScrollWebView.resetCurrentDomainName();
 
-            // Reset the reapply domain settings on restart tracker.
-            reapplyDomainSettingsOnRestart = false;
+                    // Reapply the domain settings.
+                    applyDomainSettings(nestedScrollWebView, nestedScrollWebView.getUrl(), false, true);
+                }
+            }
         }
 
-        // Load the URL on restart (used when loading a bookmark.
+        // Load the URL on restart (used when loading a bookmark).
         if (loadUrlOnRestart) {
             // Load the specified URL.
             loadUrl(urlToLoadOnRestart);
@@ -1032,7 +958,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             currentWebView.getSettings().setUseWideViewPort(false);
 
             // Load a waiting page.  `null` specifies no encoding, which defaults to ASCII.
-            currentWebView.loadData(waitingForOrbotHtmlString, "text/html", null);
+            currentWebView.loadData("<html><body><br/><center><h1>" + getString(R.string.waiting_for_orbot) + "</h1></center></body></html>", "text/html", null);
         }
 
         if (displayingFullScreenVideo || inFullScreenBrowsingMode) {
@@ -1119,13 +1045,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         MenuItem toggleSaveFormDataMenuItem = menu.findItem(R.id.toggle_save_form_data);  // Form data can be removed once the minimum API >= 26.
         MenuItem clearFormDataMenuItem = menu.findItem(R.id.clear_form_data);  // Form data can be removed once the minimum API >= 26.
         MenuItem refreshMenuItem = menu.findItem(R.id.refresh);
-        blocklistsMenuItem = menu.findItem(R.id.blocklists);
-        easyListMenuItem = menu.findItem(R.id.easylist);
-        easyPrivacyMenuItem = menu.findItem(R.id.easyprivacy);
-        fanboysAnnoyanceListMenuItem = menu.findItem(R.id.fanboys_annoyance_list);
-        fanboysSocialBlockingListMenuItem = menu.findItem(R.id.fanboys_social_blocking_list);
-        ultraPrivacyMenuItem = menu.findItem(R.id.ultraprivacy);
-        blockAllThirdPartyRequestsMenuItem = menu.findItem(R.id.block_all_third_party_requests);
         MenuItem adConsentMenuItem = menu.findItem(R.id.ad_consent);
 
         // Only display third-party cookies if API >= 21
@@ -1144,8 +1063,9 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Get the shared preference values.
         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
 
-        // Get the status of the additional AppBar icons.
+        // Get the dark theme and app bar preferences..
         boolean displayAdditionalAppBarIcons = sharedPreferences.getBoolean("display_additional_app_bar_icons", false);
+        boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false);
 
         // 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.
         if (displayAdditionalAppBarIcons) {
@@ -1188,6 +1108,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         MenuItem clearCookiesMenuItem = menu.findItem(R.id.clear_cookies);
         MenuItem clearDOMStorageMenuItem = menu.findItem(R.id.clear_dom_storage);
         MenuItem clearFormDataMenuItem = menu.findItem(R.id.clear_form_data);  // Form data can be removed once the minimum API >= 26.
+        MenuItem blocklistsMenuItem = menu.findItem(R.id.blocklists);
+        MenuItem easyListMenuItem = menu.findItem(R.id.easylist);
+        MenuItem easyPrivacyMenuItem = menu.findItem(R.id.easyprivacy);
+        MenuItem fanboysAnnoyanceListMenuItem = menu.findItem(R.id.fanboys_annoyance_list);
+        MenuItem fanboysSocialBlockingListMenuItem = menu.findItem(R.id.fanboys_social_blocking_list);
+        MenuItem ultraPrivacyMenuItem = menu.findItem(R.id.ultraprivacy);
+        MenuItem blockAllThirdPartyRequestsMenuItem = menu.findItem(R.id.block_all_third_party_requests);
         MenuItem fontSizeMenuItem = menu.findItem(R.id.font_size);
         MenuItem swipeToRefreshMenuItem = menu.findItem(R.id.swipe_to_refresh);
         MenuItem displayImagesMenuItem = menu.findItem(R.id.display_images);
@@ -1244,7 +1171,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 thirdPartyCookiesMenuItem.setChecked(cookieManager.acceptThirdPartyCookies(currentWebView));
 
                 // Enable third-party cookies if first-party cookies are enabled.
-                thirdPartyCookiesMenuItem.setEnabled(firstPartyCookiesEnabled);
+                thirdPartyCookiesMenuItem.setEnabled(cookieManager.acceptCookie());
             }
 
             // Enable DOM Storage if JavaScript is enabled.
@@ -1252,12 +1179,15 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         }
 
         // Set the status of the menu item checkboxes.
-        firstPartyCookiesMenuItem.setChecked(firstPartyCookiesEnabled);
+        firstPartyCookiesMenuItem.setChecked(cookieManager.acceptCookie());
         proxyThroughOrbotMenuItem.setChecked(proxyThroughOrbot);
 
         // Enable Clear Cookies if there are any.
         clearCookiesMenuItem.setEnabled(cookieManager.hasCookies());
 
+        // 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`.
+        String privateDataDirectoryString = getApplicationInfo().dataDir;
+
         // Get a count of the number of files in the Local Storage directory.
         File localStorageDirectory = new File (privateDataDirectoryString + "/app_webview/Local Storage/");
         int localStorageDirectoryNumberOfFiles = 0;
@@ -1385,8 +1315,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     @Override
     // Remove Android Studio's warning about the dangers of using SetJavaScriptEnabled.
     @SuppressLint("SetJavaScriptEnabled")
-    // removeAllCookies is deprecated, but it is required for API < 21.
-    @SuppressWarnings("deprecation")
     public boolean onOptionsItemSelected(MenuItem menuItem) {
         // Reenter full screen browsing mode if it was interrupted by the options menu.  <https://redmine.stoutner.com/issues/389>
         if (inFullScreenBrowsingMode) {
@@ -1426,7 +1354,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Display a `Snackbar`.
                 if (currentWebView.getSettings().getJavaScriptEnabled()) {  // JavaScrip is enabled.
                     Snackbar.make(findViewById(R.id.webviewpager), R.string.javascript_enabled, Snackbar.LENGTH_SHORT).show();
-                } else if (firstPartyCookiesEnabled) {  // JavaScript is disabled, but first-party cookies are enabled.
+                } else if (cookieManager.acceptCookie()) {  // JavaScript is disabled, but first-party cookies are enabled.
                     Snackbar.make(findViewById(R.id.webviewpager), R.string.javascript_disabled, Snackbar.LENGTH_SHORT).show();
                 } else {  // Privacy mode.
                     Snackbar.make(findViewById(R.id.webviewpager), R.string.privacy_mode, Snackbar.LENGTH_SHORT).show();
@@ -1441,11 +1369,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     // Reapply the domain settings on returning to `MainWebViewActivity`.
                     reapplyDomainSettingsOnRestart = true;
 
-                    // TODO.  Move these to `putExtra`.  The certificate can be stored as strings.
-                    // Store the current SSL certificate and IP addresses in the domains activity.
-                    DomainsActivity.currentSslCertificate = currentWebView.getCertificate();
-                    DomainsActivity.currentIpAddresses = currentWebView.getCurrentIpAddresses();
-
                     // Create an intent to launch the domains activity.
                     Intent domainsIntent = new Intent(this, DomainsActivity.class);
 
@@ -1454,6 +1377,38 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     domainsIntent.putExtra("close_on_back", true);
                     domainsIntent.putExtra("current_url", currentWebView.getUrl());
 
+                    // Get the current certificate.
+                    SslCertificate sslCertificate = currentWebView.getCertificate();
+
+                    // Check to see if the SSL certificate is populated.
+                    if (sslCertificate != null) {
+                        // Extract the certificate to strings.
+                        String issuedToCName = sslCertificate.getIssuedTo().getCName();
+                        String issuedToOName = sslCertificate.getIssuedTo().getOName();
+                        String issuedToUName = sslCertificate.getIssuedTo().getUName();
+                        String issuedByCName = sslCertificate.getIssuedBy().getCName();
+                        String issuedByOName = sslCertificate.getIssuedBy().getOName();
+                        String issuedByUName = sslCertificate.getIssuedBy().getUName();
+                        long startDateLong = sslCertificate.getValidNotBeforeDate().getTime();
+                        long endDateLong = sslCertificate.getValidNotAfterDate().getTime();
+
+                        // Add the certificate to the intent.
+                        domainsIntent.putExtra("ssl_issued_to_cname", issuedToCName);
+                        domainsIntent.putExtra("ssl_issued_to_oname", issuedToOName);
+                        domainsIntent.putExtra("ssl_issued_to_uname", issuedToUName);
+                        domainsIntent.putExtra("ssl_issued_by_cname", issuedByCName);
+                        domainsIntent.putExtra("ssl_issued_by_oname", issuedByOName);
+                        domainsIntent.putExtra("ssl_issued_by_uname", issuedByUName);
+                        domainsIntent.putExtra("ssl_start_date", startDateLong);
+                        domainsIntent.putExtra("ssl_end_date", endDateLong);
+                    }
+
+                    // Check to see if the current IP addresses have been received.
+                    if (currentWebView.hasCurrentIpAddresses()) {
+                        // Add the current IP addresses to the intent.
+                        domainsIntent.putExtra("current_ip_addresses", currentWebView.getCurrentIpAddresses());
+                    }
+
                     // Make it so.
                     startActivity(domainsIntent);
                 } else {  // Add a new domain.
@@ -1470,11 +1425,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     // Create the domain and store the database ID.
                     int newDomainDatabaseId = domainsDatabaseHelper.addDomain(currentDomain);
 
-                    // TODO.  Move these to `putExtra`.  The certificate can be stored as strings.
-                    // Store the current SSL certificate and IP addresses in the domains activity.
-                    DomainsActivity.currentSslCertificate = currentWebView.getCertificate();
-                    DomainsActivity.currentIpAddresses = currentWebView.getCurrentIpAddresses();
-
                     // Create an intent to launch the domains activity.
                     Intent domainsIntent = new Intent(this, DomainsActivity.class);
 
@@ -1483,26 +1433,58 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     domainsIntent.putExtra("close_on_back", true);
                     domainsIntent.putExtra("current_url", currentWebView.getUrl());
 
+                    // Get the current certificate.
+                    SslCertificate sslCertificate = currentWebView.getCertificate();
+
+                    // Check to see if the SSL certificate is populated.
+                    if (sslCertificate != null) {
+                        // Extract the certificate to strings.
+                        String issuedToCName = sslCertificate.getIssuedTo().getCName();
+                        String issuedToOName = sslCertificate.getIssuedTo().getOName();
+                        String issuedToUName = sslCertificate.getIssuedTo().getUName();
+                        String issuedByCName = sslCertificate.getIssuedBy().getCName();
+                        String issuedByOName = sslCertificate.getIssuedBy().getOName();
+                        String issuedByUName = sslCertificate.getIssuedBy().getUName();
+                        long startDateLong = sslCertificate.getValidNotBeforeDate().getTime();
+                        long endDateLong = sslCertificate.getValidNotAfterDate().getTime();
+
+                        // Add the certificate to the intent.
+                        domainsIntent.putExtra("ssl_issued_to_cname", issuedToCName);
+                        domainsIntent.putExtra("ssl_issued_to_oname", issuedToOName);
+                        domainsIntent.putExtra("ssl_issued_to_uname", issuedToUName);
+                        domainsIntent.putExtra("ssl_issued_by_cname", issuedByCName);
+                        domainsIntent.putExtra("ssl_issued_by_oname", issuedByOName);
+                        domainsIntent.putExtra("ssl_issued_by_uname", issuedByUName);
+                        domainsIntent.putExtra("ssl_start_date", startDateLong);
+                        domainsIntent.putExtra("ssl_end_date", endDateLong);
+                    }
+
+                    // Check to see if the current IP addresses have been received.
+                    if (currentWebView.hasCurrentIpAddresses()) {
+                        // Add the current IP addresses to the intent.
+                        domainsIntent.putExtra("current_ip_addresses", currentWebView.getCurrentIpAddresses());
+                    }
+
                     // Make it so.
                     startActivity(domainsIntent);
                 }
                 return true;
 
             case R.id.toggle_first_party_cookies:
-                // Switch the status of firstPartyCookiesEnabled.
-                firstPartyCookiesEnabled = !firstPartyCookiesEnabled;
+                // Switch the first-party cookie status.
+                cookieManager.setAcceptCookie(!cookieManager.acceptCookie());
 
-                // Update the menu checkbox.
-                menuItem.setChecked(firstPartyCookiesEnabled);
+                // Store the first-party cookie status.
+                currentWebView.setAcceptFirstPartyCookies(cookieManager.acceptCookie());
 
-                // Apply the new cookie status.
-                cookieManager.setAcceptCookie(firstPartyCookiesEnabled);
+                // Update the menu checkbox.
+                menuItem.setChecked(cookieManager.acceptCookie());
 
                 // Update the privacy icon.  `true` runs `invalidateOptionsMenu` as the last step.
                 updatePrivacyIcons(true);
 
-                // Display a `Snackbar`.
-                if (firstPartyCookiesEnabled) {  // First-party cookies are enabled.
+                // Display a snackbar.
+                if (cookieManager.acceptCookie()) {  // First-party cookies are enabled.
                     Snackbar.make(findViewById(R.id.webviewpager), R.string.first_party_cookies_enabled, Snackbar.LENGTH_SHORT).show();
                 } else if (currentWebView.getSettings().getJavaScriptEnabled()) {  // JavaScript is still enabled.
                     Snackbar.make(findViewById(R.id.webviewpager), R.string.first_party_cookies_disabled, Snackbar.LENGTH_SHORT).show();
@@ -1586,20 +1568,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                             @SuppressLint("SwitchIntDef")  // Ignore the lint warning about not handling the other possible events as they are covered by `default:`.
                             @Override
                             public void onDismissed(Snackbar snackbar, int event) {
-                                switch (event) {
-                                    // The user pushed the undo button.
-                                    case Snackbar.Callback.DISMISS_EVENT_ACTION:
-                                        // Do nothing.
-                                        break;
-
-                                    // The snackbar was dismissed without the undo button being pushed.
-                                    default:
-                                        // `cookieManager.removeAllCookie()` varies by SDK.
-                                        if (Build.VERSION.SDK_INT < 21) {
-                                            cookieManager.removeAllCookie();
-                                        } else {
-                                            cookieManager.removeAllCookies(null);
-                                        }
+                                if (event != Snackbar.Callback.DISMISS_EVENT_ACTION) {  // The snackbar was dismissed without the undo button being pushed.
+                                    // Delete the cookies, which command varies by SDK.
+                                    if (Build.VERSION.SDK_INT < 21) {
+                                        cookieManager.removeAllCookie();
+                                    } else {
+                                        cookieManager.removeAllCookies(null);
+                                    }
                                 }
                             }
                         })
@@ -1615,49 +1590,46 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                             @SuppressLint("SwitchIntDef")  // Ignore the lint warning about not handling the other possible events as they are covered by `default:`.
                             @Override
                             public void onDismissed(Snackbar snackbar, int event) {
-                                switch (event) {
-                                    // The user pushed the undo button.
-                                    case Snackbar.Callback.DISMISS_EVENT_ACTION:
-                                        // Do nothing.
-                                        break;
-
-                                    // The snackbar was dismissed without the undo button being pushed.
-                                    default:
-                                        // Delete the DOM Storage.
-                                        WebStorage webStorage = WebStorage.getInstance();
-                                        webStorage.deleteAllData();
-
-                                        // Initialize a handler to manually delete the DOM storage files and directories.
-                                        Handler deleteDomStorageHandler = new Handler();
-
-                                        // Setup a runnable to manually delete the DOM storage files and directories.
-                                        Runnable deleteDomStorageRunnable = () -> {
-                                            try {
-                                                // Get a handle for the runtime.
-                                                Runtime runtime = Runtime.getRuntime();
-
-                                                // A string array must be used because the directory contains a space and `Runtime.exec` will otherwise not escape the string correctly.
-                                                Process deleteLocalStorageProcess = runtime.exec(new String[]{"rm", "-rf", privateDataDirectoryString + "/app_webview/Local Storage/"});
-
-                                                // Multiple commands must be used because `Runtime.exec()` does not like `*`.
-                                                Process deleteIndexProcess = runtime.exec("rm -rf " + privateDataDirectoryString + "/app_webview/IndexedDB");
-                                                Process deleteQuotaManagerProcess = runtime.exec("rm -f " + privateDataDirectoryString + "/app_webview/QuotaManager");
-                                                Process deleteQuotaManagerJournalProcess = runtime.exec("rm -f " + privateDataDirectoryString + "/app_webview/QuotaManager-journal");
-                                                Process deleteDatabasesProcess = runtime.exec("rm -rf " + privateDataDirectoryString + "/app_webview/databases");
-
-                                                // Wait for the processes to finish.
-                                                deleteLocalStorageProcess.waitFor();
-                                                deleteIndexProcess.waitFor();
-                                                deleteQuotaManagerProcess.waitFor();
-                                                deleteQuotaManagerJournalProcess.waitFor();
-                                                deleteDatabasesProcess.waitFor();
-                                            } catch (Exception exception) {
-                                                // Do nothing if an error is thrown.
-                                            }
-                                        };
-
-                                        // Manually delete the DOM storage files after 200 milliseconds.
-                                        deleteDomStorageHandler.postDelayed(deleteDomStorageRunnable, 200);
+                                if (event != Snackbar.Callback.DISMISS_EVENT_ACTION) {  // The snackbar was dismissed without the undo button being pushed.
+                                    // Delete the DOM Storage.
+                                    WebStorage webStorage = WebStorage.getInstance();
+                                    webStorage.deleteAllData();
+
+                                    // Initialize a handler to manually delete the DOM storage files and directories.
+                                    Handler deleteDomStorageHandler = new Handler();
+
+                                    // Setup a runnable to manually delete the DOM storage files and directories.
+                                    Runnable deleteDomStorageRunnable = () -> {
+                                        try {
+                                            // Get a handle for the runtime.
+                                            Runtime runtime = Runtime.getRuntime();
+
+                                            // 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`.
+                                            String privateDataDirectoryString = getApplicationInfo().dataDir;
+
+                                            // A string array must be used because the directory contains a space and `Runtime.exec` will otherwise not escape the string correctly.
+                                            Process deleteLocalStorageProcess = runtime.exec(new String[]{"rm", "-rf", privateDataDirectoryString + "/app_webview/Local Storage/"});
+
+                                            // Multiple commands must be used because `Runtime.exec()` does not like `*`.
+                                            Process deleteIndexProcess = runtime.exec("rm -rf " + privateDataDirectoryString + "/app_webview/IndexedDB");
+                                            Process deleteQuotaManagerProcess = runtime.exec("rm -f " + privateDataDirectoryString + "/app_webview/QuotaManager");
+                                            Process deleteQuotaManagerJournalProcess = runtime.exec("rm -f " + privateDataDirectoryString + "/app_webview/QuotaManager-journal");
+                                            Process deleteDatabasesProcess = runtime.exec("rm -rf " + privateDataDirectoryString + "/app_webview/databases");
+
+                                            // Wait for the processes to finish.
+                                            deleteLocalStorageProcess.waitFor();
+                                            deleteIndexProcess.waitFor();
+                                            deleteQuotaManagerProcess.waitFor();
+                                            deleteQuotaManagerJournalProcess.waitFor();
+                                            deleteDatabasesProcess.waitFor();
+                                        } catch (Exception exception) {
+                                            // Do nothing if an error is thrown.
+                                        }
+                                    };
+
+                                    // Manually delete the DOM storage files after 200 milliseconds.
+                                    deleteDomStorageHandler.postDelayed(deleteDomStorageRunnable, 200);
                                 }
                             }
                         })
@@ -1674,17 +1646,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                             @SuppressLint("SwitchIntDef")  // Ignore the lint warning about not handling the other possible events as they are covered by `default:`.
                             @Override
                             public void onDismissed(Snackbar snackbar, int event) {
-                                switch (event) {
-                                    // The user pushed the undo button.
-                                    case Snackbar.Callback.DISMISS_EVENT_ACTION:
-                                        // Do nothing.
-                                        break;
-
-                                    // The snackbar was dismissed without the `Undo` button being pushed.
-                                    default:
-                                        // Delete the form data.
-                                        WebViewDatabase mainWebViewDatabase = WebViewDatabase.getInstance(getApplicationContext());
-                                        mainWebViewDatabase.clearFormData();
+                                if (event != Snackbar.Callback.DISMISS_EVENT_ACTION) {  // The snackbar was dismissed without the undo button being pushed.
+                                    // Delete the form data.
+                                    WebViewDatabase mainWebViewDatabase = WebViewDatabase.getInstance(getApplicationContext());
+                                    mainWebViewDatabase.clearFormData();
                                 }
                             }
                         })
@@ -1942,7 +1907,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     currentWebView.getSettings().setJavaScriptEnabled(true);
                 } else if (currentWebView.getDomainSettingsApplied()) {  // Night mode is disabled and domain settings are applied.  Set JavaScript according to the domain settings.
                     // Apply the JavaScript preference that was stored the last time domain settings were loaded.
-                    currentWebView.getSettings().setJavaScriptEnabled(domainSettingsJavaScriptEnabled);  // TODO.
+                    currentWebView.getSettings().setJavaScriptEnabled(currentWebView.getDomainSettingsJavaScriptEnabled());
                 } else {  // Night mode is disabled and domain settings are not applied.  Set JavaScript according to the global preference.
                     // Apply the JavaScript preference.
                     currentWebView.getSettings().setJavaScriptEnabled(sharedPreferences.getBoolean("javascript", false));
@@ -2010,16 +1975,16 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 return true;
 
             case R.id.print:
-                // Get a `PrintManager` instance.
+                // Get a print manager instance.
                 PrintManager printManager = (PrintManager) getSystemService(Context.PRINT_SERVICE);
 
-                // Create a print document adapter form the current WebView.
-                PrintDocumentAdapter printDocumentAdapter = currentWebView.createPrintDocumentAdapter();
-
-                // Remove the lint error below that `printManager` might be `null`.
+                // Remove the lint error below that print manager might be null.
                 assert printManager != null;
 
-                // Print the document.  The print attributes are `null`.
+                // Create a print document adapter from the current WebView.
+                PrintDocumentAdapter printDocumentAdapter = currentWebView.createPrintDocumentAdapter();
+
+                // Print the document.
                 printManager.print(getString(R.string.privacy_browser_web_page), printDocumentAdapter, null);
                 return true;
 
@@ -2071,12 +2036,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     }
 
     // removeAllCookies is deprecated, but it is required for API < 21.
-    @SuppressWarnings("deprecation")
     @Override
     public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
         // Get the menu item ID.
         int menuItemId = menuItem.getItemId();
 
+        // Get a handle for the shared preferences.
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+
         // Run the commands that correspond to the selected menu item.
         switch (menuItemId) {
             case R.id.close_tab:
@@ -2101,15 +2068,16 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 bookmarksCursor.close();
                 bookmarksDatabaseHelper.close();
 
-                // Get a handle for the shared preferences.
-                SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
-
                 // Get the status of the clear everything preference.
                 boolean clearEverything = sharedPreferences.getBoolean("clear_everything", true);
 
                 // Get a handle for the runtime.
                 Runtime runtime = Runtime.getRuntime();
 
+                // 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`.
+                String privateDataDirectoryString = getApplicationInfo().dataDir;
+
                 // Clear cookies.
                 if (clearEverything || sharedPreferences.getBoolean("clear_cookies", true)) {
                     // The command to remove cookies changed slightly in API 21.
@@ -2270,7 +2238,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 break;
 
             case R.id.home:
-                loadUrl(homepage);
+                // Select the homepage based on the proxy through Orbot status.
+                if (proxyThroughOrbot) {
+                    // Load the Tor homepage.
+                    loadUrl(sharedPreferences.getString("tor_homepage", getString(R.string.tor_homepage_default_value)));
+                } else {
+                    // Load the normal homepage.
+                    loadUrl(sharedPreferences.getString("homepage", getString(R.string.homepage_default_value)));
+                }
                 break;
 
             case R.id.back:
@@ -2278,8 +2253,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     // Reset the current domain name so that navigation works if third-party requests are blocked.
                     currentWebView.resetCurrentDomainName();
 
-                    // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
-                    navigatingHistory = true;
+                    // Set navigating history so that the domain settings are applied when the new URL is loaded.
+                    currentWebView.setNavigatingHistory(true);
 
                     // Load the previous website in the history.
                     currentWebView.goBack();
@@ -2291,8 +2266,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     // Reset the current domain name so that navigation works if third-party requests are blocked.
                     currentWebView.resetCurrentDomainName();
 
-                    // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
-                    navigatingHistory = true;
+                    // Set navigating history so that the domain settings are applied when the new URL is loaded.
+                    currentWebView.setNavigatingHistory(true);
 
                     // Load the next website in the history.
                     currentWebView.goForward();
@@ -2300,11 +2275,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 break;
 
             case R.id.history:
-                // Get the `WebBackForwardList`.
-                WebBackForwardList webBackForwardList = currentWebView.copyBackForwardList();
+                // Instantiate the URL history dialog.
+                DialogFragment urlHistoryDialogFragment = UrlHistoryDialog.loadBackForwardList(currentWebView.getWebViewFragmentId());
 
-                // Show the URL history dialog and name this instance `R.string.history`.
-                DialogFragment urlHistoryDialogFragment = UrlHistoryDialog.loadBackForwardList(this, webBackForwardList);
+                // Show the URL history dialog.
                 urlHistoryDialogFragment.show(getSupportFragmentManager(), getString(R.string.history));
                 break;
 
@@ -2336,17 +2310,44 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Set the flag to reapply the domain settings on restart when returning from Domain Settings.
                 reapplyDomainSettingsOnRestart = true;
 
-                // TODO.  Move these to `putExtra`.  The certificate can be stored as strings.
-                // Store the current SSL certificate and IP addresses in the domains activity.
-                DomainsActivity.currentSslCertificate = currentWebView.getCertificate();
-                DomainsActivity.currentIpAddresses = currentWebView.getCurrentIpAddresses();
-
                 // Launch the domains activity.
                 Intent domainsIntent = new Intent(this, DomainsActivity.class);
 
                 // Add the extra information to the intent.
                 domainsIntent.putExtra("current_url", currentWebView.getUrl());
 
+                // Get the current certificate.
+                SslCertificate sslCertificate = currentWebView.getCertificate();
+
+                // Check to see if the SSL certificate is populated.
+                if (sslCertificate != null) {
+                    // Extract the certificate to strings.
+                    String issuedToCName = sslCertificate.getIssuedTo().getCName();
+                    String issuedToOName = sslCertificate.getIssuedTo().getOName();
+                    String issuedToUName = sslCertificate.getIssuedTo().getUName();
+                    String issuedByCName = sslCertificate.getIssuedBy().getCName();
+                    String issuedByOName = sslCertificate.getIssuedBy().getOName();
+                    String issuedByUName = sslCertificate.getIssuedBy().getUName();
+                    long startDateLong = sslCertificate.getValidNotBeforeDate().getTime();
+                    long endDateLong = sslCertificate.getValidNotAfterDate().getTime();
+
+                    // Add the certificate to the intent.
+                    domainsIntent.putExtra("ssl_issued_to_cname", issuedToCName);
+                    domainsIntent.putExtra("ssl_issued_to_oname", issuedToOName);
+                    domainsIntent.putExtra("ssl_issued_to_uname", issuedToUName);
+                    domainsIntent.putExtra("ssl_issued_by_cname", issuedByCName);
+                    domainsIntent.putExtra("ssl_issued_by_oname", issuedByOName);
+                    domainsIntent.putExtra("ssl_issued_by_uname", issuedByUName);
+                    domainsIntent.putExtra("ssl_start_date", startDateLong);
+                    domainsIntent.putExtra("ssl_end_date", endDateLong);
+                }
+
+                // Check to see if the current IP addresses have been received.
+                if (currentWebView.hasCurrentIpAddresses()) {
+                    // Add the current IP addresses to the intent.
+                    domainsIntent.putExtra("current_ip_addresses", currentWebView.getCurrentIpAddresses());
+                }
+
                 // Make it so.
                 startActivity(domainsIntent);
                 break;
@@ -2382,8 +2383,17 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 break;
 
             case R.id.about:
-                // Launch `AboutActivity`.
+                // Create an intent to launch the about activity.
                 Intent aboutIntent = new Intent(this, AboutActivity.class);
+
+                // Create a string array for the blocklist versions.
+                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],
+                        ultraPrivacy.get(0).get(0)[0]};
+
+                // Add the blocklist versions to the intent.
+                aboutIntent.putExtra("blocklist_versions", blocklistVersions);
+
+                // Make it so.
                 startActivity(aboutIntent);
                 break;
         }
@@ -2442,9 +2452,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         final String imageUrl;
         final String linkUrl;
 
-        // Get handles for the the clipboard and fragment managers.
+        // Get handles for the system managers.
         final ClipboardManager clipboardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
         FragmentManager fragmentManager = getSupportFragmentManager();
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
 
         // Remove the lint errors below that the clipboard manager might be null.
         assert clipboardManager != null;
@@ -2494,7 +2505,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Add a Download URL entry.
                 menu.add(R.string.download_url).setOnMenuItemClickListener((MenuItem item) -> {
                     // Check if the download should be processed by an external app.
-                    if (downloadWithExternalApp) {  // Download with an external app.
+                    if (sharedPreferences.getBoolean("download_with_external_app", false)) {  // Download with an external app.
                         openUrlWithExternalApp(linkUrl);
                     } else {  // Download with Android's download manager.
                         // Check to see if the storage permission has already been granted.
@@ -2584,7 +2595,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Add a Download Image entry.
                 menu.add(R.string.download_image).setOnMenuItemClickListener((MenuItem item) -> {
                     // Check if the download should be processed by an external app.
-                    if (downloadWithExternalApp) {  // Download with an external app.
+                    if (sharedPreferences.getBoolean("download_with_external_app", false)) {  // Download with an external app.
                         openUrlWithExternalApp(imageUrl);
                     } else {  // Download with Android's download manager.
                         // Check to see if the storage permission has already been granted.
@@ -2658,7 +2669,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Add a `Download Image` entry.
                 menu.add(R.string.download_image).setOnMenuItemClickListener((MenuItem item) -> {
                     // Check if the download should be processed by an external app.
-                    if (downloadWithExternalApp) {  // Download with an external app.
+                    if (sharedPreferences.getBoolean("download_with_external_app", false)) {  // Download with an external app.
                         openUrlWithExternalApp(imageUrl);
                     } else {  // Download with Android's download manager.
                         // Check to see if the storage permission has already been granted.
@@ -2995,11 +3006,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Parse `imageUrl`.
             DownloadManager.Request downloadRequest = new DownloadManager.Request(Uri.parse(imageUrl));
 
+            // Get a handle for the cookie manager.
+            CookieManager cookieManager = CookieManager.getInstance();
+
             // Pass cookies to download manager if cookies are enabled.  This is required to download images from websites that require a login.
             // Code contributed 2017 Hendrik Knackstedt.  Copyright assigned to Soren Stoutner <soren@stoutner.com>.
-            if (firstPartyCookiesEnabled) {
+            if (cookieManager.acceptCookie()) {
                 // Get the cookies for `imageUrl`.
-                String cookies = CookieManager.getInstance().getCookie(imageUrl);
+                String cookies = cookieManager.getCookie(imageUrl);
 
                 // Add the cookies to `downloadRequest`.  In the HTTP request header, cookies are named `Cookie`.
                 downloadRequest.addRequestHeader("Cookie", cookies);
@@ -3047,11 +3061,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Parse `downloadUrl`.
             DownloadManager.Request downloadRequest = new DownloadManager.Request(Uri.parse(downloadUrl));
 
+            // Get a handle for the cookie manager.
+            CookieManager cookieManager = CookieManager.getInstance();
+
             // Pass cookies to download manager if cookies are enabled.  This is required to download files from websites that require a login.
             // Code contributed 2017 Hendrik Knackstedt.  Copyright assigned to Soren Stoutner <soren@stoutner.com>.
-            if (firstPartyCookiesEnabled) {
+            if (cookieManager.acceptCookie()) {
                 // Get the cookies for `downloadUrl`.
-                String cookies = CookieManager.getInstance().getCookie(downloadUrl);
+                String cookies = cookieManager.getCookie(downloadUrl);
 
                 // Add the cookies to `downloadRequest`.  In the HTTP request header, cookies are named `Cookie`.
                 downloadRequest.addRequestHeader("Cookie", cookies);
@@ -3089,73 +3106,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         }
     }
 
-    @Override
-    public void onHttpAuthenticationCancel() {
-        // Cancel the `HttpAuthHandler`.
-        httpAuthHandler.cancel();
-    }
-
-    @Override
-    public void onHttpAuthenticationProceed(DialogFragment dialogFragment) {
-        // Get handles for the `EditTexts`.
-        EditText usernameEditText = dialogFragment.getDialog().findViewById(R.id.http_authentication_username);
-        EditText passwordEditText = dialogFragment.getDialog().findViewById(R.id.http_authentication_password);
-
-        // Proceed with the HTTP authentication.
-        httpAuthHandler.proceed(usernameEditText.getText().toString(), passwordEditText.getText().toString());
-    }
-
-    @Override
-    public void onSslErrorCancel() {  // TODO.  How to handle this with multiple tabs?  There could be multiple errors at once.
-        sslErrorHandler.cancel();
-    }
-
-    @Override
-    public void onSslErrorProceed() {  // TODO.  How to handle this with multiple tabs?  There could be multiple errors at once.
-        sslErrorHandler.proceed();
-    }
-
-    @Override
-    public void onPinnedMismatchBack() {  // TODO.  Move this logic to the dialog.
-        if (currentWebView.canGoBack()) {  // There is a back page in the history.
-            // Reset the current domain name so that navigation works if third-party requests are blocked.
-            currentWebView.resetCurrentDomainName();
-
-            // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
-            navigatingHistory = true;  // TODO.
-
-            // Go back.
-            currentWebView.goBack();
-        } else {  // There are no pages to go back to.
-            // Load a blank page
-            loadUrl("");
-        }
-    }
-
-    @Override
-    public void onPinnedMismatchProceed() {  // TODO.  Move this logic to the dialog.
-        // Do not check the pinned information for this domain again until the domain changes.
-        currentWebView.setIgnorePinnedDomainInformation(true);
-    }
-
-    @Override
-    public void onUrlHistoryEntrySelected(int moveBackOrForwardSteps) {
-        // Reset the current domain name so that navigation works if third-party requests are blocked.
-        currentWebView.resetCurrentDomainName();
-
-        // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
-        navigatingHistory = true;
-
-        // Load the history entry.
-        currentWebView.goBackOrForward(moveBackOrForwardSteps);
-    }
-
-    @Override
-    public void onClearHistory() {
-        // Clear the history.
-        currentWebView.clearHistory();
-    }
-
     // Override `onBackPressed` to handle the navigation drawer and and the WebView.
     @Override
     public void onBackPressed() {
@@ -3180,14 +3130,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Reset the current domain name so that navigation works if third-party requests are blocked.
             currentWebView.resetCurrentDomainName();
 
-            // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
-            navigatingHistory = true;
+            // Set navigating history so that the domain settings are applied when the new URL is loaded.
+            currentWebView.setNavigatingHistory(true);
 
             // Go back.
             currentWebView.goBack();
-        } else {  // There isn't anything to do in Privacy Browser.
-            // Pass `onBackPressed()` to the system.
-            super.onBackPressed();
+        } else {  // There is nothing else to do.
+            // Load a blank website.
+            loadUrl("");
         }
     }
 
@@ -3327,13 +3277,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         proxyThroughOrbot = sharedPreferences.getBoolean("proxy_through_orbot", false);
         fullScreenBrowsingModeEnabled = sharedPreferences.getBoolean("full_screen_browsing_mode", false);
         hideAppBar = sharedPreferences.getBoolean("hide_app_bar", true);
-        downloadWithExternalApp = sharedPreferences.getBoolean("download_with_external_app", false);
 
-        // Get handles for the views that need to be modified.  `getSupportActionBar()` must be used until the minimum API >= 21.
+        // Get handles for the views that need to be modified.
         FrameLayout rootFrameLayout = findViewById(R.id.root_framelayout);
         ActionBar actionBar = getSupportActionBar();
+        LinearLayout tabsLinearLayout = findViewById(R.id.tabs_linearlayout);
 
-        // Remove the incorrect lint warnings below that the action bar might be null.
+        // Remove the incorrect lint warning below that the action bar might be null.
         assert actionBar != null;
 
         // Apply the proxy through Orbot settings.
@@ -3368,8 +3318,16 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         if (fullScreenBrowsingModeEnabled && inFullScreenBrowsingMode) {  // Privacy Browser is currently in full screen browsing mode.
             // Update the visibility of the app bar, which might have changed in the settings.
             if (hideAppBar) {
+                // Hide the tab linear layout.
+                tabsLinearLayout.setVisibility(View.GONE);
+
+                // Hide the action bar.
                 actionBar.hide();
             } else {
+                // Show the tab linear layout.
+                tabsLinearLayout.setVisibility(View.VISIBLE);
+
+                // Show the action bar.
                 actionBar.show();
             }
 
@@ -3393,7 +3351,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Reset the full screen tracker, which could be true if Privacy Browser was in full screen mode before entering settings and full screen browsing was disabled.
             inFullScreenBrowsingMode = false;
 
-            // Show the app bar.
+            // Show the tab linear layout.
+            tabsLinearLayout.setVisibility(View.VISIBLE);
+
+            // Show the action bar.
             actionBar.show();
 
             // Show the banner ad in the free flavor.
@@ -3413,7 +3374,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
     // `reloadWebsite` is used if returning from the Domains activity.  Otherwise JavaScript might not function correctly if it is newly enabled.
     @SuppressLint("SetJavaScriptEnabled")
-    private boolean applyDomainSettings(NestedScrollWebView nestedScrollWebView, String url, boolean resetFavoriteIcon, boolean reloadWebsite) {
+    private boolean applyDomainSettings(NestedScrollWebView nestedScrollWebView, String url, boolean resetTab, boolean reloadWebsite) {
         // Store a copy of the current user agent to track changes for the return boolean.
         String initialUserAgent = nestedScrollWebView.getSettings().getUserAgentString();
 
@@ -3441,30 +3402,37 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             nestedScrollWebView.clearPinnedIpAddresses();
 
             // Reset the favorite icon if specified.
-            if (resetFavoriteIcon) {
+            if (resetTab) {
                 // Initialize the favorite icon.
                 nestedScrollWebView.initializeFavoriteIcon();
 
+                // Get the current page position.
+                int currentPagePosition = webViewPagerAdapter.getPositionForId(nestedScrollWebView.getWebViewFragmentId());
+
                 // Get a handle for the tab layout.
                 TabLayout tabLayout = findViewById(R.id.tablayout);
 
-                // Get the current tab.
-                TabLayout.Tab currentTab = tabLayout.getTabAt(tabLayout.getSelectedTabPosition());  // TODO.  We need to get the tab for this WebView, which might not be the current tab.
+                // Get the corresponding tab.
+                TabLayout.Tab tab = tabLayout.getTabAt(currentPagePosition);
 
-                // Remove the warning below that the current tab might be null.
-                assert currentTab != null;
+                // Remove the warning below that the tab might be null.
+                assert tab != null;
 
-                // Get the current tab custom view.
-                View currentTabCustomView = currentTab.getCustomView();
+                // Get the tab custom view.
+                View tabCustomView = tab.getCustomView();
 
-                // Remove the warning below that the current tab custom view might be null.
-                assert currentTabCustomView != null;
+                // Remove the warning below that the tab custom view might be null.
+                assert tabCustomView != null;
 
-                // Get the current tab favorite icon image view.
-                ImageView currentTabFavoriteIconImageView = currentTabCustomView.findViewById(R.id.favorite_icon_imageview);
+                // Get the tab views.
+                ImageView tabFavoriteIconImageView = tabCustomView.findViewById(R.id.favorite_icon_imageview);
+                TextView tabTitleTextView = tabCustomView.findViewById(R.id.title_textview);
 
                 // Set the default favorite icon as the favorite icon for this tab.
-                currentTabFavoriteIconImageView.setImageBitmap(Bitmap.createScaledBitmap(nestedScrollWebView.getFavoriteOrDefaultIcon(), 64, 64, true));
+                tabFavoriteIconImageView.setImageBitmap(Bitmap.createScaledBitmap(nestedScrollWebView.getFavoriteOrDefaultIcon(), 64, 64, true));
+
+                // Set the loading title text.
+                tabTitleTextView.setText(R.string.loading);
             }
 
             // Initialize the database handler.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
@@ -3529,6 +3497,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             String defaultUserAgentName = sharedPreferences.getString("user_agent", getString(R.string.user_agent_default_value));
             boolean defaultSwipeToRefresh = sharedPreferences.getBoolean("swipe_to_refresh", true);
             boolean displayWebpageImages = sharedPreferences.getBoolean("display_webpage_images", true);
+            boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false);
 
             // Get a handle for the cookie manager.
             CookieManager cookieManager = CookieManager.getInstance();
@@ -3548,8 +3517,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                 // Get the settings from the cursor.
                 nestedScrollWebView.setDomainSettingsDatabaseId(currentDomainSettingsCursor.getInt(currentDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper._ID)));
-                boolean domainJavaScriptEnabled = (currentDomainSettingsCursor.getInt(currentDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)) == 1);
-                firstPartyCookiesEnabled = (currentDomainSettingsCursor.getInt(currentDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)) == 1);  // TODO.
+                nestedScrollWebView.setDomainSettingsJavaScriptEnabled(currentDomainSettingsCursor.getInt(currentDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)) == 1);
+                nestedScrollWebView.setAcceptFirstPartyCookies(currentDomainSettingsCursor.getInt(currentDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)) == 1);
                 boolean domainThirdPartyCookiesEnabled = (currentDomainSettingsCursor.getInt(currentDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES)) == 1);
                 nestedScrollWebView.getSettings().setDomStorageEnabled(currentDomainSettingsCursor.getInt(currentDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)) == 1);
                 // Form data can be removed once the minimum API >= 26.
@@ -3628,24 +3597,25 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                         break;
                 }
 
-                // TODO.
-                // Store the domain JavaScript status.  This is used by the options menu night mode toggle.
-                domainSettingsJavaScriptEnabled = domainJavaScriptEnabled;
-
                 // Enable JavaScript if night mode is enabled.
                 if (nestedScrollWebView.getNightMode()) {
                     // Enable JavaScript.
                     nestedScrollWebView.getSettings().setJavaScriptEnabled(true);
                 } else {
                     // Set JavaScript according to the domain settings.
-                    nestedScrollWebView.getSettings().setJavaScriptEnabled(domainJavaScriptEnabled);
+                    nestedScrollWebView.getSettings().setJavaScriptEnabled(nestedScrollWebView.getDomainSettingsJavaScriptEnabled());
                 }
 
-                // Close `currentHostDomainSettingsCursor`.
+                // Close the current host domain settings cursor.
                 currentDomainSettingsCursor.close();
 
                 // Apply the domain settings.
-                cookieManager.setAcceptCookie(firstPartyCookiesEnabled);  //TODO  This could be bad.
+                cookieManager.setAcceptCookie(nestedScrollWebView.getAcceptFirstPartyCookies());
+
+                // Set third-party cookies status if API >= 21.
+                if (Build.VERSION.SDK_INT >= 21) {
+                    cookieManager.setAcceptThirdPartyCookies(nestedScrollWebView, domainThirdPartyCookiesEnabled);
+                }
 
                 // Apply the form data setting if the API < 26.
                 if (Build.VERSION.SDK_INT < 26) {
@@ -3659,11 +3629,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     nestedScrollWebView.getSettings().setTextZoom(fontSize);
                 }
 
-                // Set third-party cookies status if API >= 21.
-                if (Build.VERSION.SDK_INT >= 21) {
-                    cookieManager.setAcceptThirdPartyCookies(nestedScrollWebView, domainThirdPartyCookiesEnabled);
-                }
-
                 // Only set the user agent if the webpage is not currently loading.  Otherwise, changing the user agent on redirects can cause the original website to reload.
                 // <https://redmine.stoutner.com/issues/160>
                 if (nestedScrollWebView.getProgress() == 100) {  // A URL is not loading.
@@ -3764,7 +3729,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             } else {  // The new URL does not have custom domain settings.  Load the defaults.
                 // Store the values from the shared preferences.
                 boolean defaultJavaScriptEnabled = sharedPreferences.getBoolean("javascript", false);
-                firstPartyCookiesEnabled = sharedPreferences.getBoolean("first_party_cookies", false);  // TODO.
+                nestedScrollWebView.setAcceptFirstPartyCookies(sharedPreferences.getBoolean("first_party_cookies", false));
                 boolean defaultThirdPartyCookiesEnabled = sharedPreferences.getBoolean("third_party_cookies", false);
                 nestedScrollWebView.getSettings().setDomStorageEnabled(sharedPreferences.getBoolean("dom_storage", false));
                 boolean saveFormData = sharedPreferences.getBoolean("save_form_data", false);  // Form data can be removed once the minimum API >= 26.
@@ -3786,20 +3751,20 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 }
 
                 // Apply the default settings.
-                cookieManager.setAcceptCookie(firstPartyCookiesEnabled);  // TODO.
+                cookieManager.setAcceptCookie(nestedScrollWebView.getAcceptFirstPartyCookies());
                 nestedScrollWebView.getSettings().setTextZoom(Integer.valueOf(defaultFontSizeString));
 
+                // Apply the form data setting if the API < 26.
+                if (Build.VERSION.SDK_INT < 26) {
+                    nestedScrollWebView.getSettings().setSaveFormData(saveFormData);
+                }
+
                 // Store the swipe to refresh status in the nested scroll WebView.
                 nestedScrollWebView.setSwipeToRefresh(defaultSwipeToRefresh);
 
                 // Apply swipe to refresh according to the default.
                 swipeRefreshLayout.setEnabled(defaultSwipeToRefresh);
 
-                // Apply the form data setting if the API < 26.
-                if (Build.VERSION.SDK_INT < 26) {
-                    nestedScrollWebView.getSettings().setSaveFormData(saveFormData);
-                }
-
                 // Reset the pinned variables.
                 nestedScrollWebView.setDomainSettingsDatabaseId(-1);
 
@@ -3864,13 +3829,12 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Get a handle for the shared preferences.
         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
 
-        // Get the search preferences.
-        String homepageString = sharedPreferences.getString("homepage", getString(R.string.homepage_default_value));
-        String torHomepageString = sharedPreferences.getString("tor_homepage", getString(R.string.tor_homepage_default_value));
+        // Get the search and theme preferences.
         String torSearchString = sharedPreferences.getString("tor_search", getString(R.string.tor_search_default_value));
         String torSearchCustomUrlString = sharedPreferences.getString("tor_search_custom_url", getString(R.string.tor_search_custom_url_default_value));
         String searchString = sharedPreferences.getString("search", getString(R.string.search_default_value));
         String searchCustomUrlString = sharedPreferences.getString("search_custom_url", getString(R.string.search_custom_url_default_value));
+        boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false);
 
         // Get a handle for the action bar.  `getSupportActionBar()` must be used until the minimum API >= 21.
         ActionBar actionBar = getSupportActionBar();
@@ -3880,9 +3844,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
         // Set the homepage, search, and proxy options.
         if (proxyThroughOrbot) {  // Set the Tor options.
-            // Set `torHomepageString` as `homepage`.
-            homepage = torHomepageString;
-
             // Set the search URL.
             if (torSearchString.equals("Custom URL")) {  // Get the custom URL string.
                 searchURL = torSearchCustomUrlString;
@@ -3909,15 +3870,12 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 currentWebView.getSettings().setUseWideViewPort(false);
 
                 // Load a waiting page.  `null` specifies no encoding, which defaults to ASCII.
-                currentWebView.loadData(waitingForOrbotHtmlString, "text/html", null);
+                currentWebView.loadData("<html><body><br/><center><h1>" + getString(R.string.waiting_for_orbot) + "</h1></center></body></html>", "text/html", null);
             } else if (reloadWebsite) {  // Orbot is ready and the website should be reloaded.
                 // Reload the website.
                 currentWebView.reload();
             }
         } else {  // Set the non-Tor options.
-            // Set `homepageString` as `homepage`.
-            homepage = homepageString;
-
             // Set the search URL.
             if (searchString.equals("Custom URL")) {  // Get the custom URL string.
                 searchURL = searchCustomUrlString;
@@ -3964,6 +3922,12 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     private void updatePrivacyIcons(boolean runInvalidateOptionsMenu) {
         // Only update the privacy icons if the options menu and the current WebView have already been populated.
         if ((optionsMenu != null) && (currentWebView != null)) {
+            // Get a handle for the shared preferences.
+            SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+
+            // Get the theme and screenshot preferences.
+            boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false);
+
             // Get handles for the menu items.
             MenuItem privacyMenuItem = optionsMenu.findItem(R.id.toggle_javascript);
             MenuItem firstPartyCookiesMenuItem = optionsMenu.findItem(R.id.toggle_first_party_cookies);
@@ -3973,14 +3937,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Update the privacy icon.
             if (currentWebView.getSettings().getJavaScriptEnabled()) {  // JavaScript is enabled.
                 privacyMenuItem.setIcon(R.drawable.javascript_enabled);
-            } else if (firstPartyCookiesEnabled) {  // JavaScript is disabled but cookies are enabled.
+            } else if (currentWebView.getAcceptFirstPartyCookies()) {  // JavaScript is disabled but cookies are enabled.
                 privacyMenuItem.setIcon(R.drawable.warning);
             } else {  // All the dangerous features are disabled.
                 privacyMenuItem.setIcon(R.drawable.privacy_mode);
             }
 
             // Update the first-party cookies icon.
-            if (firstPartyCookiesEnabled) {  // First-party cookies are enabled.
+            if (currentWebView.getAcceptFirstPartyCookies()) {  // First-party cookies are enabled.
                 firstPartyCookiesMenuItem.setIcon(R.drawable.cookies_enabled);
             } else {  // First-party cookies are disabled.
                 if (darkTheme) {
@@ -4202,13 +4166,19 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         assert newTab != null;
 
         // Set a custom view on the new tab.
-        newTab.setCustomView(R.layout.custom_tab_view);
+        newTab.setCustomView(R.layout.tab_custom_view);
 
         // Add the new WebView page.
         webViewPagerAdapter.addPage(newTabNumber, webViewPager);
     }
 
     private void setCurrentWebView(int pageNumber) {
+        // Get a handle for the shared preferences.
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+
+        // Get the theme preference.
+        boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false);
+
         // Get handles for the URL views.
         RelativeLayout urlRelativeLayout = findViewById(R.id.url_relativelayout);
         EditText urlEditText = findViewById(R.id.url_edittext);
@@ -4223,57 +4193,63 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Get the fragment view.
         View fragmentView = webViewTabFragment.getView();
 
-        // Remove the incorrect lint warning below that the fragment view might be null.
-        assert fragmentView != null;
+        // Set the current WebView if the fragment view is not null.
+        if (fragmentView != null) {
+            // Store the current WebView.
+            currentWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
 
-        // Store the current WebView.
-        currentWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
-
-        // Update the status of swipe to refresh.
-        if (currentWebView.getSwipeToRefresh()) {  // Swipe to refresh is enabled.
-            if (Build.VERSION.SDK_INT >= 23) {  // For API >= 23, swipe refresh layout is continuously updated with an on scroll change listener and only enabled if the WebView is scrolled to the top.
-                // Enable the swipe refresh layout if the WebView is scrolled all the way to the top.
-                swipeRefreshLayout.setEnabled(currentWebView.getY() == 0);
-            } else {
-                // Enable the swipe refresh layout.
-                swipeRefreshLayout.setEnabled(true);
+            // Update the status of swipe to refresh.
+            if (currentWebView.getSwipeToRefresh()) {  // Swipe to refresh is enabled.
+                if (Build.VERSION.SDK_INT >= 23) {  // For API >= 23, swipe refresh layout is continuously updated with an on scroll change listener and only enabled if the WebView is scrolled to the top.
+                    // Enable the swipe refresh layout if the WebView is scrolled all the way to the top.
+                    swipeRefreshLayout.setEnabled(currentWebView.getY() == 0);
+                } else {
+                    // Enable the swipe refresh layout.
+                    swipeRefreshLayout.setEnabled(true);
+                }
+            } else {  // Swipe to refresh is disabled.
+                // Disable the swipe refresh layout.
+                swipeRefreshLayout.setEnabled(false);
             }
-        } else {  // Swipe to refresh is disabled.
-            // Disable the swipe refresh layout.
-            swipeRefreshLayout.setEnabled(false);
-        }
 
-        // Update the privacy icons.  `true` redraws the icons in the app bar.
-        updatePrivacyIcons(true);
+            // Get a handle for the cookie manager.
+            CookieManager cookieManager = CookieManager.getInstance();
 
-        // Clear the focus from the URL text box.
-        urlEditText.clearFocus();
+            // Set the first-party cookie status.
+            cookieManager.setAcceptCookie(currentWebView.getAcceptFirstPartyCookies());
 
-        // Get a handle for the input method manager.
-        InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+            // Update the privacy icons.  `true` redraws the icons in the app bar.
+            updatePrivacyIcons(true);
 
-        // Remove the lint warning below that the input method manager might be null.
-        assert inputMethodManager != null;
+            // Clear the focus from the URL text box.
+            urlEditText.clearFocus();
 
-        // Hide the soft keyboard.
-        inputMethodManager.hideSoftInputFromWindow(currentWebView.getWindowToken(), 0);
+            // Get a handle for the input method manager.
+            InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
 
-        // Display the current URL in the URL text box.
-        urlEditText.setText(currentWebView.getUrl());
+            // Remove the lint warning below that the input method manager might be null.
+            assert inputMethodManager != null;
 
-        // Highlight the URL text.
-        highlightUrlText();
+            // Hide the soft keyboard.
+            inputMethodManager.hideSoftInputFromWindow(currentWebView.getWindowToken(), 0);
 
-        // Set the background to indicate the domain settings status.
-        if (currentWebView.getDomainSettingsApplied()) {
-            // Set a green background on the URL relative layout to indicate that custom domain settings are being used. The deprecated `.getDrawable()` must be used until the minimum API >= 21.
-            if (darkTheme) {
-                urlRelativeLayout.setBackground(getResources().getDrawable(R.drawable.url_bar_background_dark_blue));
+            // Display the current URL in the URL text box.
+            urlEditText.setText(currentWebView.getUrl());
+
+            // Highlight the URL text.
+            highlightUrlText();
+
+            // Set the background to indicate the domain settings status.
+            if (currentWebView.getDomainSettingsApplied()) {
+                // Set a green background on the URL relative layout to indicate that custom domain settings are being used. The deprecated `.getDrawable()` must be used until the minimum API >= 21.
+                if (darkTheme) {
+                    urlRelativeLayout.setBackground(getResources().getDrawable(R.drawable.url_bar_background_dark_blue));
+                } else {
+                    urlRelativeLayout.setBackground(getResources().getDrawable(R.drawable.url_bar_background_light_green));
+                }
             } else {
-                urlRelativeLayout.setBackground(getResources().getDrawable(R.drawable.url_bar_background_light_green));
+                urlRelativeLayout.setBackground(getResources().getDrawable(R.color.transparent));
             }
-        } else {
-            urlRelativeLayout.setBackground(getResources().getDrawable(R.color.transparent));
         }
     }
 
@@ -4284,11 +4260,12 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         DrawerLayout drawerLayout = findViewById(R.id.drawerlayout);
         RelativeLayout mainContentRelativeLayout = findViewById(R.id.main_content_relativelayout);
         ActionBar actionBar = getSupportActionBar();
+        LinearLayout tabsLinearLayout = findViewById(R.id.tabs_linearlayout);
         EditText urlEditText = findViewById(R.id.url_edittext);
         TabLayout tabLayout = findViewById(R.id.tablayout);
         SwipeRefreshLayout swipeRefreshLayout = findViewById(R.id.swiperefreshlayout);
 
-        // Remove the incorrect lint warnings below that the some of the views might be null.
+        // Remove the incorrect lint warning below that the action bar might be null.
         assert actionBar != null;
 
         // Get a handle for the activity
@@ -4297,6 +4274,9 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Get a handle for the input method manager.
         InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
 
+        // Instantiate the blocklist helper.
+        BlockListHelper blockListHelper = new BlockListHelper();
+
         // Remove the lint warning below that the input method manager might be null.
         assert inputMethodManager != null;
 
@@ -4345,6 +4325,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     if (inFullScreenBrowsingMode) {  // Switch to full screen mode.
                         // Hide the app bar if specified.
                         if (hideAppBar) {
+                            // Hide the tab linear layout.
+                            tabsLinearLayout.setVisibility(View.GONE);
+
+                            // Hide the action bar.
                             actionBar.hide();
                         }
 
@@ -4365,7 +4349,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                         rootFrameLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
                                 View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
                     } else {  // Switch to normal viewing mode.
-                        // Show the app bar.
+                        // Show the tab linear layout.
+                        tabsLinearLayout.setVisibility(View.VISIBLE);
+
+                        // Show the action bar.
                         actionBar.show();
 
                         // Show the banner ad in the free flavor.
@@ -4505,7 +4492,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                             }
                         };
 
-                        // Displaying of `mainWebView` after 500 milliseconds.
+                        // Display the WebView after 500 milliseconds.
                         displayWebViewHandler.postDelayed(displayWebViewRunnable, 500);
                     });
                 }
@@ -4547,20 +4534,20 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     // Get the current tab.
                     TabLayout.Tab tab = tabLayout.getTabAt(currentPosition);
 
-                    // Remove the lint warning below that the current tab might be null.
-                    assert tab != null;
-
-                    // Get the custom view from the tab.
-                    View tabView = tab.getCustomView();
-
-                    // Remove the incorrect warning below that the current tab view might be null.
-                    assert tabView != null;
+                    // Check to see if the tab has been populated.
+                    if (tab != null) {
+                        // Get the custom view from the tab.
+                        View tabView = tab.getCustomView();
 
-                    // Get the favorite icon image view from the tab.
-                    ImageView tabFavoriteIconImageView = tabView.findViewById(R.id.favorite_icon_imageview);
+                        // Check to see if the custom tab view has been populated.
+                        if (tabView != null) {
+                            // Get the favorite icon image view from the tab.
+                            ImageView tabFavoriteIconImageView = tabView.findViewById(R.id.favorite_icon_imageview);
 
-                    // Display the favorite icon in the tab.
-                    tabFavoriteIconImageView.setImageBitmap(Bitmap.createScaledBitmap(icon, 64, 64, true));
+                            // Display the favorite icon in the tab.
+                            tabFavoriteIconImageView.setImageBitmap(Bitmap.createScaledBitmap(icon, 64, 64, true));
+                        }
+                    }
                 }
             }
 
@@ -4656,10 +4643,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Show the main content relative layout.
                 mainContentRelativeLayout.setVisibility(View.VISIBLE);
 
-                // Apply the appropriate full screen mode the `SYSTEM_UI` flags.
+                // Apply the appropriate full screen mode flags.
                 if (fullScreenBrowsingModeEnabled && inFullScreenBrowsingMode) {  // Privacy Browser is currently in full screen browsing mode.
                     // Hide the app bar if specified.
                     if (hideAppBar) {
+                        // Hide the tab linear layout.
+                        tabsLinearLayout.setVisibility(View.GONE);
+
+                        // Hide the action bar.
                         actionBar.hide();
                     }
 
@@ -4715,7 +4706,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         nestedScrollWebView.setWebViewClient(new WebViewClient() {
             // `shouldOverrideUrlLoading` makes this `WebView` the default handler for URLs inside the app, so that links are not kicked out to other apps.
             // The deprecated `shouldOverrideUrlLoading` must be used until API >= 24.
-            @SuppressWarnings("deprecation")
             @Override
             public boolean shouldOverrideUrlLoading(WebView view, String url) {
                 if (url.startsWith("http")) {  // Load the URL in Privacy Browser.
@@ -4789,7 +4779,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             }
 
             // Check requests against the block lists.  The deprecated `shouldInterceptRequest()` must be used until minimum API >= 21.
-            @SuppressWarnings("deprecation")
             @Override
             public WebResourceResponse shouldInterceptRequest(WebView view, String url) {
                 // Get a handle for the navigation view.
@@ -4864,9 +4853,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                         activity.runOnUiThread(() -> {
                             // Update the menu item titles.
                             navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
-                            blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
-                            blockAllThirdPartyRequestsMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.THIRD_PARTY_REQUESTS) + " - " +
-                                    getString(R.string.block_all_third_party_requests));
+
+                            // Update the options menu if it has been populated.
+                            if (optionsMenu != null) {
+                                optionsMenu.findItem(R.id.blocklists).setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                optionsMenu.findItem(R.id.block_all_third_party_requests).setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.THIRD_PARTY_REQUESTS) + " - " +
+                                        getString(R.string.block_all_third_party_requests));
+                            }
                         });
                     }
 
@@ -4895,8 +4888,12 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                             activity.runOnUiThread(() -> {
                                 // Update the menu item titles.
                                 navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
-                                blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
-                                ultraPrivacyMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.ULTRA_PRIVACY) + " - " + getString(R.string.ultraprivacy));
+
+                                // Update the options menu if it has been populated.
+                                if (optionsMenu != null) {
+                                    optionsMenu.findItem(R.id.blocklists).setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                    optionsMenu.findItem(R.id.ultraprivacy).setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.ULTRA_PRIVACY) + " - " + getString(R.string.ultraprivacy));
+                                }
                             });
                         }
 
@@ -4932,8 +4929,12 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                             activity.runOnUiThread(() -> {
                                 // Update the menu item titles.
                                 navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
-                                blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
-                                easyListMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.EASY_LIST) + " - " + getString(R.string.easylist));
+
+                                // Update the options menu if it has been populated.
+                                if (optionsMenu != null) {
+                                    optionsMenu.findItem(R.id.blocklists).setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                    optionsMenu.findItem(R.id.easylist).setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.EASY_LIST) + " - " + getString(R.string.easylist));
+                                }
                             });
                         }
 
@@ -4966,8 +4967,12 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                             activity.runOnUiThread(() -> {
                                 // Update the menu item titles.
                                 navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
-                                blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
-                                easyPrivacyMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.EASY_PRIVACY) + " - " + getString(R.string.easyprivacy));
+
+                                // Update the options menu if it has been populated.
+                                if (optionsMenu != null) {
+                                    optionsMenu.findItem(R.id.blocklists).setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                    optionsMenu.findItem(R.id.easyprivacy).setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.EASY_PRIVACY) + " - " + getString(R.string.easyprivacy));
+                                }
                             });
                         }
 
@@ -5000,9 +5005,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                             activity.runOnUiThread(() -> {
                                 // Update the menu item titles.
                                 navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
-                                blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
-                                fanboysAnnoyanceListMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST) + " - " +
-                                        getString(R.string.fanboys_annoyance_list));
+
+                                // Update the options menu if it has been populated.
+                                if (optionsMenu != null) {
+                                    optionsMenu.findItem(R.id.blocklists).setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                    optionsMenu.findItem(R.id.fanboys_annoyance_list).setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST) + " - " +
+                                            getString(R.string.fanboys_annoyance_list));
+                                }
                             });
                         }
 
@@ -5033,9 +5042,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                             activity.runOnUiThread(() -> {
                                 // Update the menu item titles.
                                 navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
-                                blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
-                                fanboysSocialBlockingListMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST) + " - " +
-                                        getString(R.string.fanboys_social_blocking_list));
+
+                                // Update the options menu if it has been populated.
+                                if (optionsMenu != null) {
+                                    optionsMenu.findItem(R.id.blocklists).setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                    optionsMenu.findItem(R.id.fanboys_social_blocking_list).setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST) + " - " +
+                                            getString(R.string.fanboys_social_blocking_list));
+                                }
                             });
                         }
 
@@ -5062,16 +5075,21 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Handle HTTP authentication requests.
             @Override
             public void onReceivedHttpAuthRequest(WebView view, HttpAuthHandler handler, String host, String realm) {
-                // Store `handler` so it can be accessed from `onHttpAuthenticationCancel()` and `onHttpAuthenticationProceed()`.
-                httpAuthHandler = handler;
+                // Store the handler.
+                nestedScrollWebView.setHttpAuthHandler(handler);
+
+                // Instantiate an HTTP authentication dialog.
+                DialogFragment httpAuthenticationDialogFragment = HttpAuthenticationDialog.displayDialog(host, realm, nestedScrollWebView.getWebViewFragmentId());
 
-                // Display the HTTP authentication dialog.
-                DialogFragment httpAuthenticationDialogFragment = HttpAuthenticationDialog.displayDialog(host, realm);
+                // Show the HTTP authentication dialog.
                 httpAuthenticationDialogFragment.show(getSupportFragmentManager(), getString(R.string.http_authentication));
             }
 
             @Override
             public void onPageStarted(WebView view, String url, Bitmap favicon) {
+                // Get the theme preference.
+                boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false);
+
                 // Reset the list of resource requests.
                 nestedScrollWebView.clearResourceRequests();
 
@@ -5088,11 +5106,17 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                 // Check to see if Privacy Browser is waiting on Orbot.
                 if (!waitingForOrbot) {  // Process the URL.
-                    // Display the formatted URL text.
-                    urlEditText.setText(url);
+                    // Get the current page position.
+                    int currentPagePosition = webViewPagerAdapter.getPositionForId(nestedScrollWebView.getWebViewFragmentId());
 
-                    // Apply text highlighting to `urlTextBox`.
-                    highlightUrlText();
+                    // Update the URL text bar if the page is currently selected.
+                    if (tabLayout.getSelectedTabPosition() == currentPagePosition) {
+                        // Display the formatted URL text.
+                        urlEditText.setText(url);
+
+                        // Apply text highlighting to `urlTextBox`.
+                        highlightUrlText();
+                    }
 
                     // Reset the list of host IP addresses.
                     nestedScrollWebView.clearCurrentIpAddresses();
@@ -5104,13 +5128,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     new GetHostIpAddresses(activity, getSupportFragmentManager(), nestedScrollWebView).execute(currentUri.getHost());
 
                     // Apply any custom domain settings if the URL was loaded by navigating history.
-                    if (navigatingHistory) {
+                    if (nestedScrollWebView.getNavigatingHistory()) {
+                        // Reset navigating history.
+                        nestedScrollWebView.setNavigatingHistory(false);
+
                         // Apply the domain settings.
                         boolean userAgentChanged = applyDomainSettings(nestedScrollWebView, url, true, false);
 
-                        // Reset `navigatingHistory`.
-                        navigatingHistory = false;
-
                         // Manually load the URL if the user agent has changed, which will have caused the previous URL to be reloaded.
                         if (userAgentChanged) {
                             loadUrl(url);
@@ -5125,7 +5149,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                         // Set the title.
                         refreshMenuItem.setTitle(R.string.stop);
 
-                        // Get the status of the additional AppBar icons.
+                        // Get the app bar and theme preferences.
                         boolean displayAdditionalAppBarIcons = sharedPreferences.getBoolean("display_additional_app_bar_icons", false);
 
                         // If the icon is displayed in the AppBar, set it according to the theme.
@@ -5148,8 +5172,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     nestedScrollWebView.getSettings().setUseWideViewPort(url.startsWith("http"));
                 }
 
-                // Flush any cookies to persistent storage.  `CookieManager` has become very lazy about flushing cookies in recent versions.
-                if (firstPartyCookiesEnabled && Build.VERSION.SDK_INT >= 21) {
+                // Flush any cookies to persistent storage.  The cookie manager has become very lazy about flushing cookies in recent versions.
+                if (nestedScrollWebView.getAcceptFirstPartyCookies() && Build.VERSION.SDK_INT >= 21) {
                     CookieManager.getInstance().flush();
                 }
 
@@ -5161,8 +5185,9 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     // Reset the Refresh title.
                     refreshMenuItem.setTitle(R.string.refresh);
 
-                    // Get the status of the additional AppBar icons.
+                    // Get the app bar and theme preferences.
                     boolean displayAdditionalAppBarIcons = sharedPreferences.getBoolean("display_additional_app_bar_icons", false);
+                    boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false);
 
                     // If the icon is displayed in the AppBar, reset it according to the theme.
                     if (displayAdditionalAppBarIcons) {
@@ -5174,7 +5199,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     }
                 }
 
-
                 // Clear the cache and history if Incognito Mode is enabled.
                 if (incognitoModeEnabled) {
                     // Clear the cache.  `true` includes disk files.
@@ -5185,6 +5209,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                     // Manually delete cache folders.
                     try {
+                        // 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`.
+                        String privateDataDirectoryString = getApplicationInfo().dataDir;
+
                         // Delete the main cache directory.
                         Runtime.getRuntime().exec("rm -rf " + privateDataDirectoryString + "/cache");
 
@@ -5198,30 +5226,36 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                 // Update the URL text box and apply domain settings if not waiting on Orbot.
                 if (!waitingForOrbot) {
-                    // Check to see if `WebView` has set `url` to be `about:blank`.
-                    if (url.equals("about:blank")) {  // The WebView is blank.
-                        // Display the hint in the URL edit text.
-                        urlEditText.setText("");
-
-                        // Request focus for `urlTextBox`.
-                        urlEditText.requestFocus();
-
-                        // Display the keyboard.
-                        inputMethodManager.showSoftInput(urlEditText, 0);
-
-                        // Hide the WebView, which causes the default background color to be displayed according to the theme.
-                        nestedScrollWebView.setVisibility(View.GONE);
-
-                        // Apply the domain settings.  This clears any settings from the previous domain.
-                        applyDomainSettings(nestedScrollWebView, "", true, false);
-                    } else {  // The WebView has loaded a webpage.
-                        // Only update the URL text box if the user is not typing in it.
-                        if (!urlEditText.hasFocus()) {
-                            // Display the final URL.  Getting the URL from the WebView instead of using the one provided by `onPageFinished` makes websites like YouTube function correctly.
-                            urlEditText.setText(nestedScrollWebView.getUrl());
-
-                            // Apply text highlighting to `urlTextBox`.
-                            highlightUrlText();
+                    // Get the current page position.
+                    int currentPagePosition = webViewPagerAdapter.getPositionForId(nestedScrollWebView.getWebViewFragmentId());
+
+                    // Update the URL text bar if the page is currently selected.
+                    if (tabLayout.getSelectedTabPosition() == currentPagePosition) {
+                        // Check to see if the URL is `about:blank`.
+                        if (url.equals("about:blank")) {  // The WebView is blank.
+                            // Display the hint in the URL edit text.
+                            urlEditText.setText("");
+
+                            // Request focus for the URL text box.
+                            urlEditText.requestFocus();
+
+                            // Display the keyboard.
+                            inputMethodManager.showSoftInput(urlEditText, 0);
+
+                            // Hide the WebView, which causes the default background color to be displayed according to the theme.  // TODO
+                            nestedScrollWebView.setVisibility(View.GONE);
+
+                            // Apply the domain settings.  This clears any settings from the previous domain.
+                            applyDomainSettings(nestedScrollWebView, "", true, false);
+                        } else {  // The WebView has loaded a webpage.
+                            // Only update the URL text box if the user is not typing in it.
+                            if (!urlEditText.hasFocus()) {
+                                // Display the final URL.  Getting the URL from the WebView instead of using the one provided by `onPageFinished()` makes websites like YouTube function correctly.
+                                urlEditText.setText(nestedScrollWebView.getUrl());
+
+                                // Apply text highlighting to the URL.
+                                highlightUrlText();
+                            }
                         }
                     }
 
@@ -5268,11 +5302,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                         handler.proceed();
                     }
                 } else {  // Either there isn't a pinned SSL certificate or it doesn't match the current website certificate.
-                    // Store `handler` so it can be accesses from `onSslErrorCancel()` and `onSslErrorProceed()`.
-                    sslErrorHandler = handler;  // TODO.  We need to pass this in instead of using a static variable.  Because multiple could be displayed at once from different tabs.
+                    // Store the SSL error handler.
+                    nestedScrollWebView.setSslErrorHandler(handler);
 
-                    // Display the SSL error `AlertDialog`.
-                    DialogFragment sslCertificateErrorDialogFragment = SslCertificateErrorDialog.displayDialog(error);
+                    // Instantiate an SSL certificate error alert dialog.
+                    DialogFragment sslCertificateErrorDialogFragment = SslCertificateErrorDialog.displayDialog(error, nestedScrollWebView.getWebViewFragmentId());
+
+                    // Show the SSL certificate error dialog.
                     sslCertificateErrorDialogFragment.show(getSupportFragmentManager(), getString(R.string.ssl_certificate_error));
                 }
             }
@@ -5313,8 +5349,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     // Load the URL from the intent.
                     loadUrl(launchingIntentUriData.toString());
                 } else {  // The is no URL in the intent.
-                    // Load the homepage.
-                    loadUrl(homepage);
+                    // Select the homepage based on the proxy through Orbot status.
+                    if (proxyThroughOrbot) {
+                        // Load the Tor homepage.
+                        loadUrl(sharedPreferences.getString("tor_homepage", getString(R.string.tor_homepage_default_value)));
+                    } else {
+                        // Load the normal homepage.
+                        loadUrl(sharedPreferences.getString("homepage", getString(R.string.homepage_default_value)));
+                    }
                 }
             }
         }