]> gitweb.stoutner.com Git - PrivacyBrowserAndroid.git/blobdiff - app/src/main/java/com/stoutner/privacybrowser/activities/DomainsActivity.java
Add UltraPrivacy. https://redmine.stoutner.com/issues/310
[PrivacyBrowserAndroid.git] / app / src / main / java / com / stoutner / privacybrowser / activities / DomainsActivity.java
index 323cd83361c3c57d441a79e95bae26c8d6653b3f..80c5d4a13e48fee60e83306ee8d180fbc98da33b 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2017 Soren Stoutner <soren@stoutner.com>.
+ * Copyright © 2017-2018 Soren Stoutner <soren@stoutner.com>.
  *
  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
  *
 package com.stoutner.privacybrowser.activities;
 
 import android.content.Context;
+import android.content.Intent;
+import android.content.res.Resources;
 import android.database.Cursor;
+import android.net.http.SslCertificate;
 import android.os.Bundle;
+import android.os.Handler;
 import android.support.design.widget.FloatingActionButton;
 import android.support.design.widget.Snackbar;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.NavUtils;
 import android.support.v7.app.ActionBar;
 import android.support.v7.app.AppCompatActivity;
+// `AppCompatDialogFragment` is required instead of `DialogFragment` or an error is produced on API <=22.
 import android.support.v7.app.AppCompatDialogFragment;
 import android.support.v7.widget.Toolbar;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.WindowManager;
 import android.widget.CursorAdapter;
 import android.widget.EditText;
 import android.widget.ListView;
+import android.widget.RadioButton;
 import android.widget.Spinner;
 import android.widget.Switch;
 import android.widget.TextView;
@@ -48,22 +55,25 @@ import com.stoutner.privacybrowser.fragments.DomainsListFragment;
 import com.stoutner.privacybrowser.helpers.DomainsDatabaseHelper;
 
 public class DomainsActivity extends AppCompatActivity implements AddDomainDialog.AddDomainListener {
-    // `twoPanedMode` is public static so it can be accessed from `DomainsListFragment`.  It is also used in `onCreate()` and `populateDomainsListView()`.
+    // `twoPanedMode` is public static so it can be accessed from `DomainsListFragment`.  It is also used in `onCreate()`, `onCreateOptionsMenu()`, and `populateDomainsListView()`.
     public static boolean twoPanedMode;
 
-    // `databaseId` is public static so it can be accessed from `DomainsListFragment`.  It is also used in `saveDomainSettings()` and `populateDomainsListView()`.
+    // `databaseId` is public static so it can be accessed from `DomainsListFragment`.  It is also used in `onCreateOptionsMenu()`, `saveDomainSettings()` and `populateDomainsListView()`.
     public static int currentDomainDatabaseId;
 
-    // `domainSettingsFragmentDisplayed` is public static so it can be accessed from `DomainsListFragment`.  It is also used in `onCreate()`, `onOptionsItemSelected()`, and `onBackPressed()`.
-    public static boolean domainSettingsFragmentDisplayed;
-
     // `deleteMenuItem` is public static so it can be accessed from `DomainsListFragment`.  It is also used in `onCreateOptionsMenu()`, `onOptionsItemSelected()`, and `onBackPressed()`.
     public static MenuItem deleteMenuItem;
 
+    // `undoDeleteSnackbar` is public static so it can be accessed from `DomainsListFragment`.  It is also used in `onOptionsItemSelected()` and `onBackPressed()`.
+    public static Snackbar undoDeleteSnackbar;
+
+    // `dismissingSnackbar` is public static so it can be accessed from `DomainsListFragment`.  It is also used in `onOptionsItemSelected()`.
+    public static boolean dismissingSnackbar;
+
     // `context` is used in `onCreate()`, `onOptionsItemSelected()`, and `onAddDomain()`.
     private Context context;
 
-    // `supportFragmentManager` is used in `onCreate()`.
+    // `supportFragmentManager` is used in `onCreate()` and `onCreateOptionsMenu()`.
     private FragmentManager supportFragmentManager;
 
     // `domainsDatabaseHelper` is used in `onCreate()` and `saveDomainSettings()`.
@@ -72,11 +82,40 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
     // `domainsListView` is used in `onCreate()` and `populateDomainsList()`.
     private ListView domainsListView;
 
-    // `addDomainFAB` is used in `onCreate()`, `onOptionsItemSelected()`, and `onBackPressed()`.
+    // `addDomainFAB` is used in `onCreate()`, `onCreateOptionsMenu()`, `onOptionsItemSelected()`, and `onBackPressed()`.
     private FloatingActionButton addDomainFAB;
 
+    // `deletedDomainPosition` is used in an inner and outer class in `onOptionsItemSelected()`.
+    private int deletedDomainPosition;
+
+    // `restartAfterRotate` is used in `onCreate()` and `onCreateOptionsMenu()`.
+    private boolean restartAfterRotate;
+
+    // `domainSettingsDisplayedBeforeRotate` is used in `onCreate()` and `onCreateOptionsMenu()`.
+    private boolean domainSettingsDisplayedBeforeRotate;
+
+    // `domainSettingsDatabaseIdBeforeRotate` is used in `onCreate()` and `onCreateOptionsMenu()`.
+    private int domainSettingsDatabaseIdBeforeRotate;
+
+    // `goDirectlyToDatabaseId` is used in `onCreate()` and `onCreateOptionsMenu()`.
+    private int goDirectlyToDatabaseId;
+
+    // `closeOnBack` is used in `onCreate()`, `onOptionsItemSelected()` and `onBackPressed()`.
+    private boolean closeOnBack;
+
+    // `coordinatorLayout` is use in `onCreate()`, `onOptionsItemSelected()`, and `onSaveInstanceState()`.
+    private View coordinatorLayout;
+
+    // `resources` is used in `onCreate()`, `onOptionsItemSelected()`, and `onSaveInstanceState()`.
+    private Resources resources;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        // Disable screenshots if not allowed.
+        if (!MainWebViewActivity.allowScreenshots) {
+            getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
+        }
+
         // Set the activity theme.
         if (MainWebViewActivity.darkTheme) {
             setTheme(R.style.PrivacyBrowserDark_SecondaryActivity);
@@ -87,17 +126,33 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
         // Run the default commands.
         super.onCreate(savedInstanceState);
 
+        // Extract the values from `savedInstanceState` if it is not `null`.
+        if (savedInstanceState != null) {
+            restartAfterRotate = true;
+            domainSettingsDisplayedBeforeRotate = savedInstanceState.getBoolean("domainSettingsDisplayed");
+            domainSettingsDatabaseIdBeforeRotate = savedInstanceState.getInt("domainSettingsDatabaseId");
+        }
+
+        // Get the launching intent
+        Intent intent = getIntent();
+
+        // Extract the domain to load if there is one.  `-1` is the default value.
+        goDirectlyToDatabaseId = intent.getIntExtra("loadDomain", -1);
+
+        // Get the status of close-on-back, which is true when the domains activity is called from the options menu.
+        closeOnBack = intent.getBooleanExtra("closeOnBack", false);
+
         // Set the content view.
         setContentView(R.layout.domains_coordinatorlayout);
 
-        // Get a handle for the context.
+        // Populate the class variables.
+        coordinatorLayout = findViewById(R.id.domains_coordinatorlayout);
+        resources = getResources();
         context = this;
-
-        // Get a handle for the fragment manager.
         supportFragmentManager = getSupportFragmentManager();
 
-        // We need to use the `SupportActionBar` from `android.support.v7.app.ActionBar` until the minimum API is >= 21.
-        final Toolbar domainsAppBar = (Toolbar) findViewById(R.id.domains_toolbar);
+        // `SupportActionBar` from `android.support.v7.app.ActionBar` must be used until the minimum API is >= 21.
+        final Toolbar domainsAppBar = findViewById(R.id.domains_toolbar);
         setSupportActionBar(domainsAppBar);
 
         // Display the home arrow on `SupportActionBar`.
@@ -111,20 +166,12 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
         // Determine if we are in two pane mode.  `domain_settings_fragment_container` does not exist on devices with a width less than 900dp.
         twoPanedMode = (findViewById(R.id.domain_settings_fragment_container) != null);
 
-        // Display `DomainsListFragment`.
-        DomainsListFragment domainsListFragment = new DomainsListFragment();
-        supportFragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
-        supportFragmentManager.executePendingTransactions();
-
         // Configure `addDomainFAB`.
-        addDomainFAB = (FloatingActionButton) findViewById(R.id.add_domain_fab);
-        addDomainFAB.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View view) {
-                // Show the `AddDomainDialog` `AlertDialog` and name the instance `@string/add_domain`.
-                AppCompatDialogFragment addDomainDialog = new AddDomainDialog();
-                addDomainDialog.show(supportFragmentManager, getResources().getString(R.string.add_domain));
-            }
+        addDomainFAB = findViewById(R.id.add_domain_fab);
+        addDomainFAB.setOnClickListener((View view) -> {
+            // Show the add domain `AlertDialog`.
+            AppCompatDialogFragment addDomainDialog = new AddDomainDialog();
+            addDomainDialog.show(supportFragmentManager, resources.getString(R.string.add_domain));
         });
     }
 
@@ -139,8 +186,84 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
         // Only display `deleteMenuItem` (initially) in two-paned mode.
         deleteMenuItem.setVisible(twoPanedMode);
 
-        // Populate the list of domains.  We have to do this from `onCreateOptionsMenu()` instead of `onCreate()` because `populateDomainsListView()` needs the `deleteMenuItem` to be inflated.  `-1` highlights the first domain.
-        populateDomainsListView(-1);
+        // Display the fragments.  This must be done from `onCreateOptionsMenu()` instead of `onCreate()` because `populateDomainsListView()` needs `deleteMenuItem` to be inflated.
+        if (restartAfterRotate && domainSettingsDisplayedBeforeRotate) {  // The device was rotated and domain settings were displayed previously.
+            if (twoPanedMode) {  // The device is in two-paned mode.
+                // Reset `restartAfterRotate`.
+                restartAfterRotate = false;
+
+                // Display `DomainsListFragment`.
+                DomainsListFragment domainsListFragment = new DomainsListFragment();
+                supportFragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
+                supportFragmentManager.executePendingTransactions();
+
+                // Populate the list of domains.  `domainSettingsDatabaseId` highlights the domain that was highlighted before the rotation.
+                populateDomainsListView(domainSettingsDatabaseIdBeforeRotate);
+            } else {  // The device is in single-paned mode.
+                // Reset `restartAfterRotate`.
+                restartAfterRotate = false;
+
+                // Store the current domain database ID.
+                currentDomainDatabaseId = domainSettingsDatabaseIdBeforeRotate;
+
+                // Add `currentDomainDatabaseId` to `argumentsBundle`.
+                Bundle argumentsBundle = new Bundle();
+                argumentsBundle.putInt(DomainSettingsFragment.DATABASE_ID, currentDomainDatabaseId);
+
+                // Add `argumentsBundle` to `domainSettingsFragment`.
+                DomainSettingsFragment domainSettingsFragment = new DomainSettingsFragment();
+                domainSettingsFragment.setArguments(argumentsBundle);
+
+                // Show `deleteMenuItem`.
+                deleteMenuItem.setVisible(true);
+
+                // Hide `add_domain_fab`.
+                addDomainFAB.setVisibility(View.GONE);
+
+                // Display `domainSettingsFragment`.
+                supportFragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainSettingsFragment).commit();
+            }
+        } else {  // The device was not rotated or, if it was, domain settings were not displayed previously.
+            if (goDirectlyToDatabaseId >=0) {  // Load the indicated domain settings.
+                // Store the current domain database ID.
+                currentDomainDatabaseId = goDirectlyToDatabaseId;
+
+                if (twoPanedMode) {  // The device is in two-paned mode.
+                    // Display `DomainsListFragment`.
+                    DomainsListFragment domainsListFragment = new DomainsListFragment();
+                    supportFragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
+                    supportFragmentManager.executePendingTransactions();
+
+                    // Populate the list of domains.  `domainSettingsDatabaseId` highlights the domain that was highlighted before the rotation.
+                    populateDomainsListView(goDirectlyToDatabaseId);
+                } else {  // The device is in single-paned mode.
+                    // Add the domain ID to be loaded to `argumentsBundle`.
+                    Bundle argumentsBundle = new Bundle();
+                    argumentsBundle.putInt(DomainSettingsFragment.DATABASE_ID, goDirectlyToDatabaseId);
+
+                    // Add `argumentsBundle` to `domainSettingsFragment`.
+                    DomainSettingsFragment domainSettingsFragment = new DomainSettingsFragment();
+                    domainSettingsFragment.setArguments(argumentsBundle);
+
+                    // Show `deleteMenuItem`.
+                    deleteMenuItem.setVisible(true);
+
+                    // Hide `add_domain_fab`.
+                    addDomainFAB.setVisibility(View.GONE);
+
+                    // Display `domainSettingsFragment`.
+                    supportFragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainSettingsFragment).commit();
+                }
+            } else {  // Highlight the first domain.
+                // Display `DomainsListFragment`.
+                DomainsListFragment domainsListFragment = new DomainsListFragment();
+                supportFragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
+                supportFragmentManager.executePendingTransactions();
+
+                // Populate the list of domains.  `-1` highlights the first domain.
+                populateDomainsListView(-1);
+            }
+        }
 
         // Success!
         return true;
@@ -154,18 +277,39 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
         switch (menuItemID) {
             case android.R.id.home:  // The home arrow is identified as `android.R.id.home`, not just `R.id.home`.
                 if (twoPanedMode) {  // The device is in two-paned mode.
-                    // If there is at least one domain, save the current domain settings.
-                    if (domainsListView.getCount() > 0) {
-                        saveDomainSettings();
+                    // Save the current domain settings if the domain settings fragment is displayed.
+                    if (findViewById(R.id.domain_settings_scrollview) != null) {
+                        saveDomainSettings(coordinatorLayout, resources);
+                    }
+
+                    // Dismiss the undo delete `SnackBar` if it is shown.
+                    if (undoDeleteSnackbar != null && undoDeleteSnackbar.isShown()) {
+                        undoDeleteSnackbar.dismiss();
+
+                        // Create a `Runnable` to return to the main activity.
+                        Runnable navigateHomeRunnable = () -> {
+                            // Go home.
+                            NavUtils.navigateUpFromSameTask(this);
+                        };
+
+                        // Navigate home after 300 milliseconds to make sure that the previous domain has been deleted from the database.
+                        Handler handler = new Handler();
+                        handler.postDelayed(navigateHomeRunnable, 300);
+                    } else {
+                        // Go home.
+                        NavUtils.navigateUpFromSameTask(this);
                     }
+                } else if (closeOnBack) {  // Go directly back to the main WebView activity because the domains activity was launched from the options menu.
+                    // Save the current domain settings.
+                    saveDomainSettings(coordinatorLayout, resources);
 
                     // Go home.
                     NavUtils.navigateUpFromSameTask(this);
-                } else if (domainSettingsFragmentDisplayed) {  // The device is in single-paned mode and `DomainSettingsFragment` is displayed.
+                } else if (findViewById(R.id.domain_settings_scrollview) != null) {  // The device is in single-paned mode and the domain settings fragment is displayed.
                     // Save the current domain settings.
-                    saveDomainSettings();
+                    saveDomainSettings(coordinatorLayout, resources);
 
-                    // Display `DomainsListFragment`.
+                    // Display the domains list fragment.
                     DomainsListFragment domainsListFragment = new DomainsListFragment();
                     supportFragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
                     supportFragmentManager.executePendingTransactions();
@@ -173,29 +317,44 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
                     // Populate the list of domains.  `-1` highlights the first domain if in two-paned mode.  It has no effect in single-paned mode.
                     populateDomainsListView(-1);
 
-                    // Update `domainSettingsFragmentDisplayed`.
-                    domainSettingsFragmentDisplayed = false;
-
-                    // Display `addDomainFAB`.
+                    // Display the add domain FAB.
                     addDomainFAB.setVisibility(View.VISIBLE);
 
-                    // Hide `deleteMenuItem`.
+                    // Hide the delete menu item.
                     deleteMenuItem.setVisible(false);
                 } else {  // The device is in single-paned mode and `DomainsListFragment` is displayed.
-                    // Go home.
-                    NavUtils.navigateUpFromSameTask(this);
+                    // Dismiss the undo delete `SnackBar` if it is shown.
+                    if (undoDeleteSnackbar != null && undoDeleteSnackbar.isShown()) {
+                        undoDeleteSnackbar.dismiss();
+
+                        // Create a `Runnable` to return to the main activity.
+                        Runnable navigateHomeRunnable = () -> {
+                            // Go home.
+                            NavUtils.navigateUpFromSameTask(this);
+                        };
+
+                        // Navigate home after 300 milliseconds to make sure that the previous domain has been deleted from the database.
+                        Handler handler = new Handler();
+                        handler.postDelayed(navigateHomeRunnable, 300);
+                    } else {
+                        // Go home.
+                        NavUtils.navigateUpFromSameTask(this);
+                    }
                 }
                 break;
 
             case R.id.delete_domain:
+                // Reset close-on-back, which otherwise can cause errors if the system attempts to save settings for a domain that no longer exists.
+                closeOnBack = false;
+
                 // Store a copy of `currentDomainDatabaseId` because it could change while the `Snackbar` is displayed.
                 final int databaseIdToDelete = currentDomainDatabaseId;
 
-                // Store the deleted domain position, which is needed if `Undo` is selected in the `Snackbar`.
-                final int deletedDomainPosition = domainsListView.getCheckedItemPosition();
-
                 // Update the fragments and menu items.
                 if (twoPanedMode) {  // Two-paned mode.
+                    // Store the deleted domain position, which is needed if `Undo` is selected in the `Snackbar`.
+                    deletedDomainPosition = domainsListView.getCheckedItemPosition();
+
                     // Disable the options `MenuItems`.
                     deleteMenuItem.setEnabled(false);
                     deleteMenuItem.setIcon(R.drawable.delete_blue);
@@ -208,9 +367,6 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
                     supportFragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
                     supportFragmentManager.executePendingTransactions();
 
-                    // Update `domainSettingsFragmentDisplayed`.
-                    domainSettingsFragmentDisplayed = false;
-
                     // Display `addDomainFAB`.
                     addDomainFAB.setVisibility(View.VISIBLE);
 
@@ -233,24 +389,21 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
                     public void bindView(View view, Context context, Cursor cursor) {
                         // Set the domain name.
                         String domainNameString = cursor.getString(cursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME));
-                        TextView domainNameTextView = (TextView) view.findViewById(R.id.domain_name_textview);
+                        TextView domainNameTextView = view.findViewById(R.id.domain_name_textview);
                         domainNameTextView.setText(domainNameString);
                     }
                 };
 
                 // Update the handle for the current `domains_listview`.
-                domainsListView = (ListView) findViewById(R.id.domains_listview);
+                domainsListView = findViewById(R.id.domains_listview);
 
                 // Update the `ListView`.
                 domainsListView.setAdapter(domainsPendingDeleteCursorAdapter);
 
                 // Display a `Snackbar`.
-                Snackbar.make(domainsListView, R.string.domain_deleted, Snackbar.LENGTH_LONG)
-                        .setAction(R.string.undo, new View.OnClickListener() {
-                            @Override
-                            public void onClick(View v) {
-                                // Do nothing because everything will be handled by `onDismissed()` below.
-                            }
+                undoDeleteSnackbar = Snackbar.make(domainsListView, R.string.domain_deleted, Snackbar.LENGTH_LONG)
+                        .setAction(R.string.undo, (View v) -> {
+                            // Do nothing because everything will be handled by `onDismissed()` below.
                         })
                         .addCallback(new Snackbar.Callback() {
                             @Override
@@ -283,7 +436,7 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
                                                 public void bindView(View view, Context context, Cursor cursor) {
                                                     // Set the domain name.
                                                     String domainNameString = cursor.getString(cursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME));
-                                                    TextView domainNameTextView = (TextView) view.findViewById(R.id.domain_name_textview);
+                                                    TextView domainNameTextView = view.findViewById(R.id.domain_name_textview);
                                                     domainNameTextView.setText(domainNameString);
                                                 }
                                             };
@@ -304,15 +457,12 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
                                             supportFragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainSettingsFragment).commit();
 
                                             // Hide `add_domain_fab`.
-                                            FloatingActionButton addDomainFAB = (FloatingActionButton) findViewById(R.id.add_domain_fab);
+                                            FloatingActionButton addDomainFAB = findViewById(R.id.add_domain_fab);
                                             addDomainFAB.setVisibility(View.GONE);
 
                                             // Show and enable `deleteMenuItem`.
                                             deleteMenuItem.setVisible(true);
 
-                                            // Set `domainSettingsFragmentDisplayed`.
-                                            domainSettingsFragmentDisplayed = true;
-
                                             // Display `domainSettingsFragment`.
                                             supportFragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainSettingsFragment).commit();
                                         }
@@ -322,11 +472,40 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
                                     default:
                                         // Delete the selected domain.
                                         domainsDatabaseHelper.deleteDomain(databaseIdToDelete);
+
+                                        // enable `deleteMenuItem` if the system was waiting for a `Snackbar` to be dismissed.
+                                        if (dismissingSnackbar) {
+                                            // Create a `Runnable` to enable the delete menu item.
+                                            Runnable enableDeleteMenuItemRunnable = () -> {
+                                                // Enable `deleteMenuItem` according to the display mode.
+                                                if (twoPanedMode) {  // Two-paned mode.
+                                                    // Enable `deleteMenuItem`.
+                                                    deleteMenuItem.setEnabled(true);
+
+                                                    // Set the delete icon according to the theme.
+                                                    if (MainWebViewActivity.darkTheme) {
+                                                        deleteMenuItem.setIcon(R.drawable.delete_dark);
+                                                    } else {
+                                                        deleteMenuItem.setIcon(R.drawable.delete_light);
+                                                    }
+                                                } else {  // Single-paned mode.
+                                                    // Show `deleteMenuItem`.
+                                                    deleteMenuItem.setVisible(true);
+                                                }
+
+                                                // Reset `dismissingSnackbar`.
+                                                dismissingSnackbar = false;
+                                            };
+
+                                            // Run `enableDeleteMenuItemRunnable` after 100 milliseconds to make sure that the previous domain has been deleted from the database.
+                                            Handler handler = new Handler();
+                                            handler.postDelayed(enableDeleteMenuItemRunnable, 100);
+                                        }
                                         break;
                                 }
                             }
-                        })
-                        .show();
+                        });
+                undoDeleteSnackbar.show();
                 break;
         }
 
@@ -334,22 +513,58 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
         return true;
     }
 
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        // Store the current `DomainSettingsFragment` state in `outState`.
+        if (findViewById(R.id.domain_settings_scrollview) != null) {  // `DomainSettingsFragment` is displayed.
+            // Save any changes that have been made to the domain settings.
+            saveDomainSettings(coordinatorLayout, resources);
+
+            // Store `DomainSettingsDisplayed`.
+            outState.putBoolean("domainSettingsDisplayed", true);
+            outState.putInt("domainSettingsDatabaseId", DomainSettingsFragment.databaseId);
+        } else {  // `DomainSettingsFragment` is not displayed.
+            outState.putBoolean("domainSettingsDisplayed", false);
+            outState.putInt("domainSettingsDatabaseId", -1);
+        }
+
+        super.onSaveInstanceState(outState);
+    }
+
     // Control what the navigation bar back button does.
     @Override
     public void onBackPressed() {
         if (twoPanedMode) {  // The device is in two-paned mode.
-            // If there is at least one domain, save the current domain settings.
-            if (domainsListView.getCount() > 0) {
-                saveDomainSettings();
+            // Save the current domain settings if the domain settings fragment is displayed.
+            if (findViewById(R.id.domain_settings_scrollview) != null) {
+                saveDomainSettings(coordinatorLayout, resources);
             }
 
-            // Go home.
-            NavUtils.navigateUpFromSameTask(this);
-        } else if (domainSettingsFragmentDisplayed) {  // The device is in single-paned mode and `DomainSettingsFragment` is displayed.
+            // Dismiss the undo delete SnackBar if it is shown.
+            if (undoDeleteSnackbar != null && undoDeleteSnackbar.isShown()) {
+                undoDeleteSnackbar.dismiss();
+
+                // Create a runnable to return to the main activity.
+                Runnable navigateHomeRunnable = super::onBackPressed;
+
+                // Navigate home after 300 milliseconds to make sure that the previous domain has been deleted from the database.
+                Handler handler = new Handler();
+                handler.postDelayed(navigateHomeRunnable, 300);
+            } else {
+                // Pass `onBackPressed()` to the system.
+                super.onBackPressed();
+            }
+        } else if (closeOnBack) {  // Go directly back to the main WebView activity because the domains activity was launched from the options menu.
+            // Save the current domain settings.
+            saveDomainSettings(coordinatorLayout, resources);
+
+            // Pass `onBackPressed()` to the system.
+            super.onBackPressed();
+        } else if (findViewById(R.id.domain_settings_scrollview) != null) {  // The device is in single-paned mode and domain settings fragment is displayed.
             // Save the current domain settings.
-            saveDomainSettings();
+            saveDomainSettings(coordinatorLayout, resources);
 
-            // Display `DomainsListFragment`.
+            // Display the domains list fragment.
             DomainsListFragment domainsListFragment = new DomainsListFragment();
             supportFragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
             supportFragmentManager.executePendingTransactions();
@@ -357,24 +572,38 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
             // Populate the list of domains.  `-1` highlights the first domain if in two-paned mode.  It has no effect in single-paned mode.
             populateDomainsListView(-1);
 
-            // Update `domainSettingsFragmentDisplayed`.
-            domainSettingsFragmentDisplayed = false;
-
-            // Display `addDomainFAB`.
+            // Display the add domain FAB.
             addDomainFAB.setVisibility(View.VISIBLE);
 
-            // Hide `deleteMenuItem`.
+            // Hide the delete menu item.
             deleteMenuItem.setVisible(false);
-        } else {  // The device is in single-paned mode and `DomainsListFragment` is displayed.
-            // Pass `onBackPressed()` to the system.
-            super.onBackPressed();
+        } else {  // The device is in single-paned mode and the domain list fragment is displayed.
+            // Dismiss the undo delete SnackBar if it is shown.
+            if (undoDeleteSnackbar != null && undoDeleteSnackbar.isShown()) {
+                undoDeleteSnackbar.dismiss();
+
+                // Create a runnable to return to the main activity.
+                Runnable navigateHomeRunnable = super::onBackPressed;
+
+                // Navigate home after 300 milliseconds to make sure that the previous domain has been deleted from the database.
+                Handler handler = new Handler();
+                handler.postDelayed(navigateHomeRunnable, 300);
+            } else {
+                // Pass `onBackPressed()` to the system.
+                super.onBackPressed();
+            }
         }
     }
 
     @Override
     public void onAddDomain(AppCompatDialogFragment dialogFragment) {
-        // Get the `domainNameEditText` from `dialogFragment` and extract the string.
-        EditText domainNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.domain_name_edittext);
+        // Dismiss the undo delete snackbar if it is currently displayed.
+        if ((undoDeleteSnackbar != null) && (undoDeleteSnackbar.isShown())) {
+            undoDeleteSnackbar.dismiss();
+        }
+
+        // Get the new domain name String from the dialog fragment.
+        EditText domainNameEditText = dialogFragment.getDialog().findViewById(R.id.domain_name_edittext);
         String domainNameString = domainNameEditText.getText().toString();
 
         // Create the domain and store the database ID in `currentDomainDatabaseId`.
@@ -390,9 +619,6 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
             // Show and enable `deleteMenuItem`.
             DomainsActivity.deleteMenuItem.setVisible(true);
 
-            // Set `domainSettingsFragmentDisplayed`.
-            DomainsActivity.domainSettingsFragmentDisplayed = true;
-
             // Add `currentDomainDatabaseId` to `argumentsBundle`.
             Bundle argumentsBundle = new Bundle();
             argumentsBundle.putInt(DomainSettingsFragment.DATABASE_ID, currentDomainDatabaseId);
@@ -406,48 +632,113 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
         }
     }
 
-    private void saveDomainSettings() {
+    public void saveDomainSettings(View view, Resources resources) {
         // Get handles for the domain settings.
-        EditText domainNameEditText = (EditText) findViewById(R.id.domain_settings_name_edittext);
-        Switch javaScriptEnabledSwitch = (Switch) findViewById(R.id.domain_settings_javascript_switch);
-        Switch firstPartyCookiesEnabledSwitch = (Switch) findViewById(R.id.domain_settings_first_party_cookies_switch);
-        Switch thirdPartyCookiesEnabledSwitch = (Switch) findViewById(R.id.domain_settings_third_party_cookies_switch);
-        Switch domStorageEnabledSwitch = (Switch) findViewById(R.id.domain_settings_dom_storage_switch);
-        Switch formDataEnabledSwitch = (Switch) findViewById(R.id.domain_settings_form_data_switch);
-        Spinner userAgentSpinner = (Spinner) findViewById(R.id.domain_settings_user_agent_spinner);
-        EditText customUserAgentEditText = (EditText) findViewById(R.id.domain_settings_custom_user_agent_edittext);
-        Spinner fontSizeSpinner = (Spinner) findViewById(R.id.domain_settings_font_size_spinner);
-        Spinner displayWebpageImagesSpinner = (Spinner) findViewById(R.id.domain_settings_display_webpage_images_spinner);
+        EditText domainNameEditText = view.findViewById(R.id.domain_settings_name_edittext);
+        Switch javaScriptSwitch = view.findViewById(R.id.domain_settings_javascript_switch);
+        Switch firstPartyCookiesSwitch = view.findViewById(R.id.domain_settings_first_party_cookies_switch);
+        Switch thirdPartyCookiesSwitch = view.findViewById(R.id.domain_settings_third_party_cookies_switch);
+        Switch domStorageSwitch = view.findViewById(R.id.domain_settings_dom_storage_switch);
+        Switch formDataSwitch = view.findViewById(R.id.domain_settings_form_data_switch);  // Form data can be removed once the minimum API >= 26.
+        Switch easyListSwitch = view.findViewById(R.id.domain_settings_easylist_switch);
+        Switch easyPrivacySwitch = view.findViewById(R.id.domain_settings_easyprivacy_switch);
+        Switch fanboysAnnoyanceSwitch = view.findViewById(R.id.domain_settings_fanboys_annoyance_list_switch);
+        Switch fanboysSocialBlockingSwitch = view.findViewById(R.id.domain_settings_fanboys_social_blocking_list_switch);
+        Switch ultraPrivacySwitch = view.findViewById(R.id.domain_settings_ultraprivacy_switch);
+        Switch blockAllThirdPartyRequestsSwitch = view.findViewById(R.id.domain_settings_block_all_third_party_requests_switch);
+        Spinner userAgentSpinner = view.findViewById(R.id.domain_settings_user_agent_spinner);
+        EditText customUserAgentEditText = view.findViewById(R.id.domain_settings_custom_user_agent_edittext);
+        Spinner fontSizeSpinner = view.findViewById(R.id.domain_settings_font_size_spinner);
+        Spinner swipeToRefreshSpinner = view.findViewById(R.id.domain_settings_swipe_to_refresh_spinner);
+        Spinner displayWebpageImagesSpinner = view.findViewById(R.id.domain_settings_display_webpage_images_spinner);
+        Spinner nightModeSpinner = view.findViewById(R.id.domain_settings_night_mode_spinner);
+        Switch pinnedSslCertificateSwitch = view.findViewById(R.id.domain_settings_pinned_ssl_certificate_switch);
+        RadioButton savedSslCertificateRadioButton = view.findViewById(R.id.saved_ssl_certificate_radiobutton);
+        RadioButton currentWebsiteCertificateRadioButton = view.findViewById(R.id.current_website_certificate_radiobutton);
 
         // Extract the data for the domain settings.
         String domainNameString = domainNameEditText.getText().toString();
-        boolean javaScriptEnabledBoolean = javaScriptEnabledSwitch.isChecked();
-        boolean firstPartyCookiesEnabledBoolean = firstPartyCookiesEnabledSwitch.isChecked();
-        boolean thirdPartyCookiesEnabledBoolean = thirdPartyCookiesEnabledSwitch.isChecked();
-        boolean domStorageEnabledEnabledBoolean  = domStorageEnabledSwitch.isChecked();
-        boolean formDataEnabledBoolean = formDataEnabledSwitch.isChecked();
-        int userAgentPositionInt = userAgentSpinner.getSelectedItemPosition();
-        int fontSizePositionInt = fontSizeSpinner.getSelectedItemPosition();
+        boolean javaScriptEnabled = javaScriptSwitch.isChecked();
+        boolean firstPartyCookiesEnabled = firstPartyCookiesSwitch.isChecked();
+        boolean thirdPartyCookiesEnabled = thirdPartyCookiesSwitch.isChecked();
+        boolean domStorageEnabled  = domStorageSwitch.isChecked();
+        boolean formDataEnabled = formDataSwitch.isChecked();  // Form data can be removed once the minimum API >= 26.
+        boolean easyListEnabled = easyListSwitch.isChecked();
+        boolean easyPrivacyEnabled = easyPrivacySwitch.isChecked();
+        boolean fanboysAnnoyanceEnabled = fanboysAnnoyanceSwitch.isChecked();
+        boolean fanboysSocialBlockingEnabled = fanboysSocialBlockingSwitch.isChecked();
+        boolean ultraPrivacyEnabled = ultraPrivacySwitch.isChecked();
+        boolean blockAllThirdPartyRequests = blockAllThirdPartyRequestsSwitch.isChecked();
+        int userAgentPosition = userAgentSpinner.getSelectedItemPosition();
+        int fontSizePosition = fontSizeSpinner.getSelectedItemPosition();
+        int swipeToRefreshInt = swipeToRefreshSpinner.getSelectedItemPosition();
         int displayWebpageImagesInt = displayWebpageImagesSpinner.getSelectedItemPosition();
+        int nightModeInt = nightModeSpinner.getSelectedItemPosition();
+        boolean pinnedSslCertificate = pinnedSslCertificateSwitch.isChecked();
+
+        // Initialize the user agent name string.
+        String userAgentName;
 
-        // Get the data for the `Spinners` from the entry values string arrays.
-        String userAgentString = getResources().getStringArray(R.array.domain_settings_user_agent_entry_values)[userAgentPositionInt];
-        int fontSizeInt = Integer.parseInt(getResources().getStringArray(R.array.domain_settings_font_size_entry_values)[fontSizePositionInt]);
+        // Set the user agent name.
+        switch (userAgentPosition) {
+            case MainWebViewActivity.DOMAINS_SYSTEM_DEFAULT_USER_AGENT:
+                // Set the user agent name to be `System default user agent`.
+                userAgentName = resources.getString(R.string.system_default_user_agent);
+                break;
+
+            case MainWebViewActivity.DOMAINS_CUSTOM_USER_AGENT:
+                // Set the user agent name to be the custom user agent.
+                userAgentName = customUserAgentEditText.getText().toString();
+                break;
 
-        // Check to see if we are using a custom user agent.
-        if (userAgentString.equals("Custom user agent")) {
-            // Set `userAgentString` to the custom user agent string.
-            userAgentString = customUserAgentEditText.getText().toString();
+            default:
+                // Get the array of user agent names.
+                String[] userAgentNameArray = resources.getStringArray(R.array.user_agent_names);
+
+                // Set the user agent name from the array.  The domain spinner has one more entry than the name array, so the position must be decremented.
+                userAgentName = userAgentNameArray[userAgentPosition - 1];
         }
 
+        // Get the font size integer.
+        int fontSizeInt = Integer.parseInt(resources.getStringArray(R.array.domain_settings_font_size_entry_values)[fontSizePosition]);
+
         // Save the domain settings.
-        domainsDatabaseHelper.saveDomain(currentDomainDatabaseId, domainNameString, javaScriptEnabledBoolean, firstPartyCookiesEnabledBoolean, thirdPartyCookiesEnabledBoolean, domStorageEnabledEnabledBoolean, formDataEnabledBoolean, userAgentString, fontSizeInt,
-                displayWebpageImagesInt);
+        if (savedSslCertificateRadioButton.isChecked()) {  // The current certificate is being used.
+            // Update the database except for the certificate.
+            domainsDatabaseHelper.updateDomainExceptCertificate(DomainsActivity.currentDomainDatabaseId, domainNameString, javaScriptEnabled, firstPartyCookiesEnabled, thirdPartyCookiesEnabled,
+                    domStorageEnabled, formDataEnabled, easyListEnabled, easyPrivacyEnabled, fanboysAnnoyanceEnabled, fanboysSocialBlockingEnabled, ultraPrivacyEnabled, blockAllThirdPartyRequests,
+                    userAgentName, fontSizeInt, swipeToRefreshInt, nightModeInt, displayWebpageImagesInt, pinnedSslCertificate);
+        } else if (currentWebsiteCertificateRadioButton.isChecked()) {  // The certificate is being updated with the current website certificate.
+            // Get the current website SSL certificate.
+            SslCertificate currentWebsiteSslCertificate = MainWebViewActivity.sslCertificate;
+
+            // Store the values from the SSL certificate.
+            String issuedToCommonName = currentWebsiteSslCertificate.getIssuedTo().getCName();
+            String issuedToOrganization = currentWebsiteSslCertificate.getIssuedTo().getOName();
+            String issuedToOrganizationalUnit = currentWebsiteSslCertificate.getIssuedTo().getUName();
+            String issuedByCommonName = currentWebsiteSslCertificate.getIssuedBy().getCName();
+            String issuedByOrganization = currentWebsiteSslCertificate.getIssuedBy().getOName();
+            String issuedByOrganizationalUnit = currentWebsiteSslCertificate.getIssuedBy().getUName();
+            long startDateLong = currentWebsiteSslCertificate.getValidNotBeforeDate().getTime();
+            long endDateLong = currentWebsiteSslCertificate.getValidNotAfterDate().getTime();
+
+            // Update the database.
+            domainsDatabaseHelper.updateDomainWithCertificate(currentDomainDatabaseId, domainNameString, javaScriptEnabled, firstPartyCookiesEnabled, thirdPartyCookiesEnabled, domStorageEnabled,
+                    formDataEnabled, easyListEnabled, easyPrivacyEnabled, fanboysAnnoyanceEnabled, fanboysSocialBlockingEnabled, ultraPrivacyEnabled, blockAllThirdPartyRequests, userAgentName, fontSizeInt,
+                    swipeToRefreshInt, nightModeInt, displayWebpageImagesInt, pinnedSslCertificate, issuedToCommonName, issuedToOrganization, issuedToOrganizationalUnit, issuedByCommonName,
+                    issuedByOrganization, issuedByOrganizationalUnit, startDateLong, endDateLong);
+
+        } else {  // No certificate is selected.
+            // Update the database, with PINNED_SSL_CERTIFICATE set to false.
+            domainsDatabaseHelper.updateDomainExceptCertificate(currentDomainDatabaseId, domainNameString, javaScriptEnabled, firstPartyCookiesEnabled, thirdPartyCookiesEnabled, domStorageEnabled,
+                    formDataEnabled, easyListEnabled, easyPrivacyEnabled, fanboysAnnoyanceEnabled, fanboysSocialBlockingEnabled, ultraPrivacyEnabled, blockAllThirdPartyRequests, userAgentName, fontSizeInt,
+                    swipeToRefreshInt, nightModeInt, displayWebpageImagesInt,false);
+        }
     }
 
     private void populateDomainsListView(final int highlightedDomainDatabaseId) {
         // get a handle for the current `domains_listview`.
-        domainsListView = (ListView) findViewById(R.id.domains_listview);
+        domainsListView = findViewById(R.id.domains_listview);
 
         // Get a `Cursor` with the current contents of the domains database.
         Cursor domainsCursor = domainsDatabaseHelper.getDomainNameCursorOrderedByDomain();
@@ -464,7 +755,7 @@ public class DomainsActivity extends AppCompatActivity implements AddDomainDialo
             public void bindView(View view, Context context, Cursor cursor) {
                 // Set the domain name.
                 String domainNameString = cursor.getString(cursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME));
-                TextView domainNameTextView = (TextView) view.findViewById(R.id.domain_name_textview);
+                TextView domainNameTextView = view.findViewById(R.id.domain_name_textview);
                 domainNameTextView.setText(domainNameString);
             }
         };