]> gitweb.stoutner.com Git - PrivacyBrowserAndroid.git/blobdiff - app/src/main/java/com/stoutner/privacybrowser/activities/MainWebViewActivity.java
Reorder the options menu. Implements https://redmine.stoutner.com/issues/105.
[PrivacyBrowserAndroid.git] / app / src / main / java / com / stoutner / privacybrowser / activities / MainWebViewActivity.java
index 2cad4b6d1e79c88f909c69e8d80b72eb127f7349..2b8009f0d4d7b706d1dcfa5f28055fb965845416 100644 (file)
@@ -32,6 +32,7 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.SharedPreferences;
 import android.content.res.Configuration;
+import android.database.Cursor;
 import android.graphics.Bitmap;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
@@ -94,6 +95,7 @@ import com.stoutner.privacybrowser.dialogs.CreateHomeScreenShortcutDialog;
 import com.stoutner.privacybrowser.dialogs.DownloadImageDialog;
 import com.stoutner.privacybrowser.dialogs.UrlHistoryDialog;
 import com.stoutner.privacybrowser.dialogs.ViewSslCertificateDialog;
+import com.stoutner.privacybrowser.helpers.DomainsDatabaseHelper;
 import com.stoutner.privacybrowser.helpers.OrbotProxyHelper;
 import com.stoutner.privacybrowser.dialogs.DownloadFileDialog;
 import com.stoutner.privacybrowser.dialogs.SslCertificateErrorDialog;
@@ -123,8 +125,8 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
     // It is also used in `onCreate()` and `onCreateHomeScreenShortcutCreate()`.
     public static Bitmap favoriteIcon;
 
-    // `formattedUrlString` is public static so it can be accessed from `BookmarksActivity`.
-    // It is also used in `onCreate()`, `onOptionsItemSelected()`, `onCreateHomeScreenShortcutCreate()`, and `loadUrlFromTextBox()`.
+    // `formattedUrlString` is public static so it can be accessed from `BookmarksActivity`, `CreateBookmarkDialog`, and `AddDomainDialog`.
+    // It is also used in `onCreate()`, `onOptionsItemSelected()`, `onNavigationItemSelected()`, `onCreateHomeScreenShortcutCreate()`, and `loadUrlFromTextBox()`.
     public static String formattedUrlString;
 
     // `sslCertificate` is public static so it can be accessed from `ViewSslCertificateDialog`.  It is also used in `onCreate()`.
@@ -133,6 +135,12 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
     // `orbotStatus` is public static so it can be accessed from `OrbotProxyHelper`.  It is also used in `onCreate()`.
     public static String orbotStatus;
 
+    // `webViewTitle` is public static so it can be accessed from `CreateBookmarkDialog` and `CreateHomeScreenShortcutDialog`.  It is also used in `onCreate()`.
+    public static String webViewTitle;
+
+
+    // `navigatingHistory` is used in `onCreate()` and `onNavigationItemSelected()`.
+    private boolean navigatingHistory;
 
     // `drawerLayout` is used in `onCreate()`, `onNewIntent()`, and `onBackPressed()`.
     private DrawerLayout drawerLayout;
@@ -149,10 +157,10 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
     // `swipeRefreshLayout` is used in `onCreate()`, `onPrepareOptionsMenu`, and `onRestart()`.
     private SwipeRefreshLayout swipeRefreshLayout;
 
-    // `cookieManager` is used in `onCreate()`, `onOptionsItemSelected()`, and `onNavigationItemSelected()`, `onDownloadImage()`, `onDownloadFile()`, and `onRestart()`.
+    // `cookieManager` is used in `onCreate()`, `onOptionsItemSelected()`, and `onNavigationItemSelected()`, `loadUrlFromTextBox()`, `onDownloadImage()`, `onDownloadFile()`, and `onRestart()`.
     private CookieManager cookieManager;
 
-    // `customHeader` is used in `onCreate()`, `onOptionsItemSelected()`, `onCreateContextMenu()`, and `loadUrlFromTextBox()`.
+    // `customHeader` is used in `onCreate()`, `onOptionsItemSelected()`, `onCreateContextMenu()`, and `loadUrl()`.
     private final Map<String, String> customHeaders = new HashMap<>();
 
     // `javaScriptEnabled` is also used in `onCreate()`, `onCreateOptionsMenu()`, `onOptionsItemSelected()`, `loadUrlFromTextBox()`, and `applySettings()`.
@@ -201,6 +209,9 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
     // `proxyThroughOrbot` is used in `onCreate()` and `applySettings()`
     private boolean proxyThroughOrbot;
 
+    // `currentDomain` is used in `onCreate() and `applyDomainSettings()`.
+    private String currentDomain;
+
     // `pendingUrl` is used in `onCreate()` and `applySettings()`
     private static String pendingUrl;
 
@@ -222,7 +233,7 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
     // `supportAppBar` is used in `onCreate()`, `onOptionsItemSelected()`, and `closeFindOnPage()`.
     private Toolbar supportAppBar;
 
-    // `urlTextBox` is used in `onCreate()`, `onOptionsItemSelected()`, and `loadUrlFromTextBox()`.
+    // `urlTextBox` is used in `onCreate()`, `onOptionsItemSelected()`, `loadUrlFromTextBox()`, and `loadUrl()`.
     private EditText urlTextBox;
 
     // `adView` is used in `onCreate()` and `onConfigurationChanged()`.
@@ -284,10 +295,9 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
         // Set `waitingForOrbotHTMLString`.
         waitingForOrbotHTMLString = "<html><body><br/><center><h1>" + getString(R.string.waiting_for_orbot) + "</h1></center></body></html>";
 
-        // Initialize `pendingUrl`.
+        // Initialize `currentDomain`, `pendingUrl`, and `orbotStatus`.
+        currentDomain = "";
         pendingUrl = "";
-
-        // Set the initial Orbot status.
         orbotStatus = "unknown";
 
         // Create an Orbot status `BroadcastReceiver`.
@@ -312,7 +322,7 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
                     pendingUrl = "";
 
                     // Load `formattedUrlString
-                    mainWebView.loadUrl(formattedUrlString, customHeaders);
+                    loadUrl(formattedUrlString);
                 }
             }
         };
@@ -566,7 +576,7 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
                     startActivity(emailIntent);
                     return true;
                 } else {  // Load the URL in Privacy Browser.
-                    mainWebView.loadUrl(url, customHeaders);
+                    loadUrl(url);
                     return true;
                 }
             }
@@ -580,12 +590,12 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
                     Uri requestUri = Uri.parse(url);
                     String requestHost = requestUri.getHost();
 
-                    // Create a variable to track if this is an ad server.
+                    // Initialize a variable to track if this is an ad server.
                     boolean requestHostIsAdServer = false;
 
-                    // Check all the subdomains of `requestHost` if it is not `null`.
+                    // Check all the subdomains of `requestHost` if it is not `null` against the ad server database.
                     if (requestHost != null) {
-                        while (requestHost.contains(".")) {
+                        while (requestHost.contains(".") && !requestHostIsAdServer) {  // Stop checking if we run out of `.` or if we already know that `requestHostIsAdServer` is `true`.
                             if (adServersSet.contains(requestHost)) {
                                 requestHostIsAdServer = true;
                             }
@@ -618,6 +628,11 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
 
                     // Display the loading URL is the URL text box.
                     urlTextBox.setText(url);
+
+                    // Apply any custom domain settings if the URL was loaded by navigating history.
+                    if (navigatingHistory) {
+                        applyDomainSettings(url);
+                    }
                 }
             }
 
@@ -669,7 +684,7 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
             // Set the favorite icon when it changes.
             @Override
             public void onReceivedIcon(WebView view, Bitmap icon) {
-                // Save a copy of the favorite icon for use if a shortcut is added to the home screen.
+                // Save a copy of the favorite icon.
                 favoriteIcon = icon;
 
                 // Place the favorite icon in the appBar.
@@ -677,6 +692,13 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
                 imageViewFavoriteIcon.setImageBitmap(Bitmap.createScaledBitmap(icon, 64, 64, true));
             }
 
+            // Save a copy of the title when it changes.
+            @Override
+            public void onReceivedTitle(WebView view, String title) {
+                // Save a copy of the title.
+                webViewTitle = title;
+            }
+
             // Enter full screen video
             @Override
             public void onShowCustomView(View view, CustomViewCallback callback) {
@@ -773,12 +795,19 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
         // Initialize AdView for the free flavor.
         adView = findViewById(R.id.adView);
 
-        // Apply the settings from the shared preferences.
-        applySettings();
+        // Initialize the privacy settings variables.
+        javaScriptEnabled = false;
+        firstPartyCookiesEnabled = false;
+        thirdPartyCookiesEnabled = false;
+        domStorageEnabled = false;
+        saveFormDataEnabled = false;
+
+        // Apply the app settings from the shared preferences.
+        applyAppSettings();
 
         // Load `formattedUrlString` if we are not proxying through Orbot and waiting for Orbot to connect.
         if (!(proxyThroughOrbot && !orbotStatus.equals("ON"))) {
-            mainWebView.loadUrl(formattedUrlString, customHeaders);
+            loadUrl(formattedUrlString);
         }
 
         // If the favorite icon is null, load the default.
@@ -808,7 +837,7 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
         }
 
         // Load the website.
-        mainWebView.loadUrl(formattedUrlString, customHeaders);
+        loadUrl(formattedUrlString);
 
         // Clear the keyboard if displayed and remove the focus on the urlTextBar if it has it.
         mainWebView.requestFocus();
@@ -831,7 +860,7 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
         MenuItem toggleDomStorage = menu.findItem(R.id.toggleDomStorage);
         MenuItem toggleSaveFormData = menu.findItem(R.id.toggleSaveFormData);
 
-        // Only display third-Party Cookies if SDK >= 21
+        // Only display third-party cookies if SDK >= 21
         toggleThirdPartyCookies.setVisible(Build.VERSION.SDK_INT >= 21);
 
         // Get the shared preference values.  `this` references the current context.
@@ -1123,6 +1152,14 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
                 mainWebView.getSettings().setTextZoom(200);
                 return true;
 
+            case R.id.share:
+                Intent shareIntent = new Intent();
+                shareIntent.setAction(Intent.ACTION_SEND);
+                shareIntent.putExtra(Intent.EXTRA_TEXT, urlTextBox.getText().toString());
+                shareIntent.setType("text/plain");
+                startActivity(Intent.createChooser(shareIntent, "Share URL"));
+                return true;
+
             case R.id.find_on_page:
                 // Hide the URL app bar.
                 supportAppBar.setVisibility(View.GONE);
@@ -1146,20 +1183,8 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
                 }, 200);
                 return true;
 
-            case R.id.share:
-                Intent shareIntent = new Intent();
-                shareIntent.setAction(Intent.ACTION_SEND);
-                shareIntent.putExtra(Intent.EXTRA_TEXT, urlTextBox.getText().toString());
-                shareIntent.setType("text/plain");
-                startActivity(Intent.createChooser(shareIntent, "Share URL"));
-                return true;
-
-            case R.id.addToHomescreen:
-                // Show the `CreateHomeScreenShortcutDialog` `AlertDialog` and name this instance `R.string.create_shortcut`.
-                AppCompatDialogFragment createHomeScreenShortcutDialogFragment = new CreateHomeScreenShortcutDialog();
-                createHomeScreenShortcutDialogFragment.show(getSupportFragmentManager(), getResources().getString(R.string.create_shortcut));
-
-                //Everything else will be handled by `CreateHomeScreenShortcutDialog` and the associated listener below.
+            case R.id.refresh:
+                mainWebView.reload();
                 return true;
 
             case R.id.print:
@@ -1173,8 +1198,12 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
                 printManager.print(getResources().getString(R.string.privacy_browser_web_page), printDocumentAdapter, null);
                 return true;
 
-            case R.id.refresh:
-                mainWebView.reload();
+            case R.id.addToHomescreen:
+                // Show the `CreateHomeScreenShortcutDialog` `AlertDialog` and name this instance `R.string.create_shortcut`.
+                AppCompatDialogFragment createHomeScreenShortcutDialogFragment = new CreateHomeScreenShortcutDialog();
+                createHomeScreenShortcutDialogFragment.show(getSupportFragmentManager(), getResources().getString(R.string.create_shortcut));
+
+                //Everything else will be handled by `CreateHomeScreenShortcutDialog` and the associated listener below.
                 return true;
 
             default:
@@ -1191,17 +1220,25 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
 
         switch (menuItemId) {
             case R.id.home:
-                mainWebView.loadUrl(homepage, customHeaders);
+                loadUrl(homepage);
                 break;
 
             case R.id.back:
                 if (mainWebView.canGoBack()) {
+                    // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
+                    navigatingHistory = true;
+
+                    // Load the previous website in the history.
                     mainWebView.goBack();
                 }
                 break;
 
             case R.id.forward:
                 if (mainWebView.canGoForward()) {
+                    // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
+                    navigatingHistory = true;
+
+                    // Load the next website in the history.
                     mainWebView.goForward();
                 }
                 break;
@@ -1371,7 +1408,7 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
                 menu.add(R.string.load_url).setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
                     @Override
                     public boolean onMenuItemClick(MenuItem item) {
-                        mainWebView.loadUrl(linkUrl, customHeaders);
+                        loadUrl(linkUrl);
                         return false;
                     }
                 });
@@ -1448,7 +1485,7 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
                 menu.add(R.string.view_image).setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
                     @Override
                     public boolean onMenuItemClick(MenuItem item) {
-                        mainWebView.loadUrl(imageUrl, customHeaders);
+                        loadUrl(imageUrl);
                         return false;
                     }
                 });
@@ -1494,7 +1531,7 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
                 menu.add(R.string.view_image).setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
                     @Override
                     public boolean onMenuItemClick(MenuItem item) {
-                        mainWebView.loadUrl(imageUrl, customHeaders);
+                        loadUrl(imageUrl);
                         return false;
                     }
                 });
@@ -1659,6 +1696,9 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
 
     @Override
     public void onUrlHistoryEntrySelected(int moveBackOrForwardSteps) {
+        // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
+        navigatingHistory = true;
+
         // Load the history entry.
         mainWebView.goBackOrForward(moveBackOrForwardSteps);
     }
@@ -1678,6 +1718,10 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
         } else {
             // Load the previous URL if available.
             if (mainWebView.canGoBack()) {
+                // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
+                navigatingHistory = true;
+
+                // Go back.
                 mainWebView.goBack();
             } else {
                 // Pass `onBackPressed()` to the system.
@@ -1723,7 +1767,7 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
         super.onRestart();
 
         // Apply the settings from shared preferences, which might have been changed in `SettingsActivity`.
-        applySettings();
+        applyAppSettings();
 
         // Update the privacy icon.  `true` runs `invalidateOptionsMenu` as the last step.
         updatePrivacyIcons(true);
@@ -1772,12 +1816,181 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
             }
         }
 
-        mainWebView.loadUrl(formattedUrlString, customHeaders);
+        loadUrl(formattedUrlString);
 
         // Hide the keyboard so we can see the webpage.  `0` indicates no additional flags.
         inputMethodManager.hideSoftInputFromWindow(mainWebView.getWindowToken(), 0);
     }
 
+
+    private void loadUrl(String url) {
+        // Apply any custom domain settings.
+        applyDomainSettings(url);
+
+        // Load the URL.
+        mainWebView.loadUrl(url, customHeaders);
+    }
+
+    // We have to use the deprecated `.getColor()` until the minimum API >= 23.
+    @SuppressWarnings("deprecation")
+    private void applyDomainSettings(String url) {
+        // Parse the URL into a URI.
+        Uri uri = Uri.parse(url);
+
+        // Extract the domain from `uri`.
+        String hostname = uri.getHost();
+
+        // Only apply the domain settings if `hostname` is not the same as `currentDomain`.  This allows the user to set temporary settings for JavaScript, Cookies, DOM Storage, etc.
+        if (!hostname.equals(currentDomain)) {
+            // Set the new `hostname` as the `currentDomain`.
+            currentDomain = hostname;
+
+            // Initialize the database handler.  `this` specifies the context.  The two `nulls` do not specify the database name or a `CursorFactory`.
+            // The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
+            DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(this, null, null, 0);
+
+            // Get a full cursor from `domainsDatabaseHelper`.
+            Cursor domainNameCursor = domainsDatabaseHelper.getDomainNameCursorOrderedByDomain();
+
+            // Initialize `domainSettingsSet`.
+            Set<String> domainSettingsSet = new HashSet<>();
+
+            // Get the domain name column index.
+            int domainNameColumnIndex = domainNameCursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME);
+
+            // Populate `domainSettingsSet`.
+            for (int i = 0; i < domainNameCursor.getCount(); i++) {
+                // Move `domainsCursor` to the current row.
+                domainNameCursor.moveToPosition(i);
+
+                // Store the domain name in `domainSettingsSet`.
+                domainSettingsSet.add(domainNameCursor.getString(domainNameColumnIndex));
+            }
+
+            // Close `domainNameCursor.
+            domainNameCursor.close();
+
+            // Initialize variables to track if this domain has stored domain settings, and if so, under which name.
+            boolean hostHasDomainSettings = false;
+            String domainNameInDatabase = null;
+
+            // Check the hostname.
+            if (domainSettingsSet.contains(hostname)) {
+                hostHasDomainSettings = true;
+                domainNameInDatabase = hostname;
+            }
+
+            // Check all the subdomains of `hostname` against wildcard domains in `domainCursor`.
+            while (hostname.contains(".") && !hostHasDomainSettings) {  // Stop checking if we run out of  `.` or if we already know that `hostHasDomainSettings` is `true`.
+                if (domainSettingsSet.contains("*." + hostname)) {  // Check the host name prepended by `*.`.
+                    hostHasDomainSettings = true;
+                    domainNameInDatabase = "*." + hostname;
+                }
+
+                // Strip out the lowest subdomain of `host`.
+                hostname = hostname.substring(hostname.indexOf(".") + 1);
+            }
+
+            FrameLayout urlAppBarFrameLayout = (FrameLayout) findViewById(R.id.url_app_bar_framelayout);
+
+            if (hostHasDomainSettings) {  // The url we are loading has custom domain settings.
+                // Get a cursor for the current host and move it to the first position.
+                Cursor currentHostDomainSettingsCursor = domainsDatabaseHelper.getCursorForDomainName(domainNameInDatabase);
+                currentHostDomainSettingsCursor.moveToFirst();
+
+                // Get the settings from the cursor.
+                javaScriptEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)) == 1);
+                firstPartyCookiesEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)) == 1);
+                thirdPartyCookiesEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES)) == 1);
+                domStorageEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)) == 1);
+                saveFormDataEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)) == 1);
+                String userAgentString = (currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT)));
+                int fontSize = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE)));
+
+                // Close `currentHostDomainSettingsCursor`.
+                currentHostDomainSettingsCursor.close();
+
+                // Apply the domain settings.
+                mainWebView.getSettings().setJavaScriptEnabled(javaScriptEnabled);
+                cookieManager.setAcceptCookie(firstPartyCookiesEnabled);
+                mainWebView.getSettings().setDomStorageEnabled(domStorageEnabled);
+                mainWebView.getSettings().setSaveFormData(saveFormDataEnabled);
+                mainWebView.getSettings().setTextZoom(fontSize);
+
+                // Set third-party cookies status if API >= 21.
+                if (Build.VERSION.SDK_INT >= 21) {
+                    cookieManager.setAcceptThirdPartyCookies(mainWebView, thirdPartyCookiesEnabled);
+                }
+
+                // Set the user agent.
+                if (userAgentString.equals("WebView default user agent")) {
+                    // Set the user agent to `""`, which uses the default value.
+                    mainWebView.getSettings().setUserAgentString("");
+                } else {
+                    // Use the selected user agent.
+                    mainWebView.getSettings().setUserAgentString(userAgentString);
+                }
+
+                // Set a green background on `urlTextBox` to indicate that custom domain settings are being used.  We have to use the deprecated `.getColor()` until the minimum API >= 23.
+                urlAppBarFrameLayout.setBackgroundColor(getResources().getColor(R.color.green_100));
+            } else {  // The URL we are loading does not have custom domain settings.  Load the defaults.
+                // Get the shared preference values.  `this` references the current context.
+                SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+
+                // Store the values from `sharedPreferences` in variables.
+                javaScriptEnabled = sharedPreferences.getBoolean("javascript_enabled", false);
+                firstPartyCookiesEnabled = sharedPreferences.getBoolean("first_party_cookies_enabled", false);
+                thirdPartyCookiesEnabled = sharedPreferences.getBoolean("third_party_cookies_enabled", false);
+                domStorageEnabled = sharedPreferences.getBoolean("dom_storage_enabled", false);
+                saveFormDataEnabled = sharedPreferences.getBoolean("save_form_data_enabled", false);
+                String userAgentString = sharedPreferences.getString("user_agent", "PrivacyBrowser/1.0");
+                String customUserAgentString = sharedPreferences.getString("custom_user_agent", "PrivacyBrowser/1.0");
+                String defaultFontSizeString = sharedPreferences.getString("default_font_size", "100");
+
+                // Apply the default settings.
+                mainWebView.getSettings().setJavaScriptEnabled(javaScriptEnabled);
+                cookieManager.setAcceptCookie(firstPartyCookiesEnabled);
+                mainWebView.getSettings().setDomStorageEnabled(domStorageEnabled);
+                mainWebView.getSettings().setSaveFormData(saveFormDataEnabled);
+                mainWebView.getSettings().setTextZoom(Integer.valueOf(defaultFontSizeString));
+
+                // Set third-party cookies status if API >= 21.
+                if (Build.VERSION.SDK_INT >= 21) {
+                    cookieManager.setAcceptThirdPartyCookies(mainWebView, thirdPartyCookiesEnabled);
+                }
+
+                // Set the default user agent.
+                switch (userAgentString) {
+                    case "WebView default user agent":
+                        // Set the user agent to `""`, which uses the default value.
+                        mainWebView.getSettings().setUserAgentString("");
+                        break;
+
+                    case "Custom user agent":
+                        // Set the custom user agent.
+                        mainWebView.getSettings().setUserAgentString(customUserAgentString);
+                        break;
+
+                    default:
+                        // Use the selected user agent.
+                        mainWebView.getSettings().setUserAgentString(userAgentString);
+                        break;
+                }
+
+                // Set a transparent background on `urlTextBox`.  We have to use the deprecated `.getColor()` until the minimum API >= 23.
+                urlAppBarFrameLayout.setBackgroundColor(getResources().getColor(R.color.transparent));
+            }
+
+            // Close `domainsDatabaseHelper`.
+            domainsDatabaseHelper.close();
+
+            // Update the privacy icons, but only if `mainMenu` has already been populated.
+            if (mainMenu != null) {
+                updatePrivacyIcons(true);
+            }
+        }
+    }
+
     public void findPreviousOnPage(View view) {
         // Go to the previous highlighted phrase on the page.  `false` goes backwards instead of forwards.
         mainWebView.findNext(false);
@@ -1805,13 +2018,11 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
         inputMethodManager.hideSoftInputFromWindow(mainWebView.getWindowToken(), 0);
     }
 
-    private void applySettings() {
+    private void applyAppSettings() {
         // Get the shared preference values.  `this` references the current context.
         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
 
         // Store the values from `sharedPreferences` in variables.
-        String userAgentString = sharedPreferences.getString("user_agent", "PrivacyBrowser/1.0");
-        String customUserAgentString = sharedPreferences.getString("custom_user_agent", "PrivacyBrowser/1.0");
         String javaScriptDisabledSearchString = sharedPreferences.getString("javascript_disabled_search", "https://duckduckgo.com/html/?q=");
         String javaScriptDisabledSearchCustomURLString = sharedPreferences.getString("javascript_disabled_search_custom_url", "");
         String javaScriptEnabledSearchString = sharedPreferences.getString("javascript_enabled_search", "https://duckduckgo.com/?q=");
@@ -1822,7 +2033,6 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
         String torJavaScriptDisabledSearchCustomURLString = sharedPreferences.getString("tor_javascript_disabled_search_custom_url", "");
         String torJavaScriptEnabledSearchString = sharedPreferences.getString("tor_javascript_enabled_search", "https://3g2upl4pq6kufc4m.onion/?q=");
         String torJavaScriptEnabledSearchCustomURLString = sharedPreferences.getString("tor_javascript_enabled_search_custom_url", "");
-        String defaultFontSizeString = sharedPreferences.getString("default_font_size", "100");
         swipeToRefreshEnabled = sharedPreferences.getBoolean("swipe_to_refresh_enabled", false);
         adBlockerEnabled = sharedPreferences.getBoolean("block_ads", true);
         boolean doNotTrackEnabled = sharedPreferences.getBoolean("do_not_track", false);
@@ -1831,28 +2041,6 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
         hideSystemBarsOnFullscreen = sharedPreferences.getBoolean("hide_system_bars", false);
         translucentNavigationBarOnFullscreen = sharedPreferences.getBoolean("translucent_navigation_bar", true);
 
-        // Because they can be modified on-the-fly by the user, these default settings are only applied when the program first runs.
-        if (javaScriptEnabled == null) {  // If `javaScriptEnabled` is null the program is just starting.
-            // Get the values from `sharedPreferences`.
-            javaScriptEnabled = sharedPreferences.getBoolean("javascript_enabled", false);
-            firstPartyCookiesEnabled = sharedPreferences.getBoolean("first_party_cookies_enabled", false);
-            thirdPartyCookiesEnabled = sharedPreferences.getBoolean("third_party_cookies_enabled", false);
-            domStorageEnabled = sharedPreferences.getBoolean("dom_storage_enabled", false);
-            saveFormDataEnabled = sharedPreferences.getBoolean("save_form_data_enabled", false);
-
-            // Apply the default settings.
-            mainWebView.getSettings().setJavaScriptEnabled(javaScriptEnabled);
-            cookieManager.setAcceptCookie(firstPartyCookiesEnabled);
-            mainWebView.getSettings().setDomStorageEnabled(domStorageEnabled);
-            mainWebView.getSettings().setSaveFormData(saveFormDataEnabled);
-            mainWebView.getSettings().setTextZoom(Integer.valueOf(defaultFontSizeString));
-
-            // Set third-party cookies status if API >= 21.
-            if (Build.VERSION.SDK_INT >= 21) {
-                cookieManager.setAcceptThirdPartyCookies(mainWebView, thirdPartyCookiesEnabled);
-            }
-        }
-
         // Set the homepage, search, and proxy options.
         if (proxyThroughOrbot) {  // Set the Tor options.
             // Set `torHomepageString` as `homepage`.
@@ -1924,24 +2112,6 @@ public class MainWebViewActivity extends AppCompatActivity implements Navigation
         // Set swipe to refresh.
         swipeRefreshLayout.setEnabled(swipeToRefreshEnabled);
 
-        // Set the user agent initial status.
-        switch (userAgentString) {
-            case "Default user agent":
-                // Set the user agent to `""`, which uses the default value.
-                mainWebView.getSettings().setUserAgentString("");
-                break;
-
-            case "Custom user agent":
-                // Set the custom user agent.
-                mainWebView.getSettings().setUserAgentString(customUserAgentString);
-                break;
-
-            default:
-                // Use the selected user agent.
-                mainWebView.getSettings().setUserAgentString(userAgentString);
-                break;
-        }
-
         // Set Do Not Track status.
         if (doNotTrackEnabled) {
             customHeaders.put("DNT", "1");