app/src/main/java/com/stoutner/privacybrowser/activities/DomainsActivity.java

   1 /*
   2  * Copyright © 2017-2020 Soren Stoutner <soren@stoutner.com>.
   3  *
   4  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
   5  *
   6  * Privacy Browser is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Privacy Browser is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 package com.stoutner.privacybrowser.activities;
  21
  22 import android.app.Activity;
  23 import android.content.Context;
  24 import android.content.Intent;
  25 import android.content.SharedPreferences;
  26 import android.content.res.Configuration;
  27 import android.content.res.Resources;
  28 import android.database.Cursor;
  29 import android.os.Bundle;
  30 import android.os.Handler;
  31 import android.preference.PreferenceManager;
  32 import android.view.Menu;
  33 import android.view.MenuItem;
  34 import android.view.View;
  35 import android.view.ViewGroup;
  36 import android.view.WindowManager;
  37 import android.widget.CursorAdapter;
  38 import android.widget.EditText;
  39 import android.widget.ListView;
  40 import android.widget.RadioButton;
  41 import android.widget.Spinner;
  42 import android.widget.Switch;
  43 import android.widget.TextView;
  44
  45 import androidx.annotation.NonNull;
  46 import androidx.appcompat.app.ActionBar;
  47 import androidx.appcompat.app.AppCompatActivity;
  48 import androidx.appcompat.widget.Toolbar;  // The AndroidX toolbar must be used until the minimum API is >= 21.
  49 import androidx.core.app.NavUtils;
  50 import androidx.fragment.app.DialogFragment;
  51 import androidx.fragment.app.FragmentManager;  // The AndroidX dialog fragment must be used or an error is produced on API <=22.
  52
  53 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  54 import com.google.android.material.snackbar.Snackbar;
  55
  56 import com.stoutner.privacybrowser.R;
  57 import com.stoutner.privacybrowser.dialogs.AddDomainDialog;
  58 import com.stoutner.privacybrowser.fragments.DomainSettingsFragment;
  59 import com.stoutner.privacybrowser.fragments.DomainsListFragment;
  60 import com.stoutner.privacybrowser.helpers.DomainsDatabaseHelper;
  61
  62 import java.util.Objects;
  63
  64 public class DomainsActivity extends AppCompatActivity implements AddDomainDialog.AddDomainListener, DomainsListFragment.DismissSnackbarInterface {
  65     // `twoPanedMode` is public static so it can be accessed from `DomainsListFragment`.  It is also used in `onCreate()`, `onCreateOptionsMenu()`, and `populateDomainsListView()`.
  66     public static boolean twoPanedMode;
  67
  68     // `databaseId` is public static so it can be accessed from `DomainsListFragment`.  It is also used in `onCreateOptionsMenu()`, `saveDomainSettings()` and `populateDomainsListView()`.
  69     public static int currentDomainDatabaseId;
  70
  71     // `deleteMenuItem` is public static so it can be accessed from `DomainsListFragment`.  It is also used in `onCreateOptionsMenu()`, `onOptionsItemSelected()`, and `onBackPressed()`.
  72     public static MenuItem deleteMenuItem;
  73
  74     // `dismissingSnackbar` is public static so it can be accessed from `DomainsListFragment`.  It is also used in `onOptionsItemSelected()`.
  75     public static boolean dismissingSnackbar;
  76
  77     // The SSL certificate and IP address information are accessed from `DomainSettingsFragment` and `saveDomainSettings()`.
  78     public static String sslIssuedToCName;
  79     public static String sslIssuedToOName;
  80     public static String sslIssuedToUName;
  81     public static String sslIssuedByCName;
  82     public static String sslIssuedByOName;
  83     public static String sslIssuedByUName;
  84     public static long sslStartDateLong;
  85     public static long sslEndDateLong;
  86     public static String currentIpAddresses;
  87
  88
  89     // `closeActivityAfterDismissingSnackbar` is used in `onOptionsItemSelected()`, and `onBackPressed()`.
  90     private boolean closeActivityAfterDismissingSnackbar;
  91
  92     // The undelete snackbar is used in `onOptionsItemSelected()` and `onBackPressed()`.
  93     private Snackbar undoDeleteSnackbar;
  94
  95     // `domainsDatabaseHelper` is used in `onCreate()`, `saveDomainSettings()`, and `onDestroy()`.
  96     private static DomainsDatabaseHelper domainsDatabaseHelper;
  97
  98     // `domainsListView` is used in `onCreate()` and `populateDomainsList()`.
  99     private ListView domainsListView;
 100
 101     // `addDomainFAB` is used in `onCreate()`, `onCreateOptionsMenu()`, `onOptionsItemSelected()`, and `onBackPressed()`.
 102     private FloatingActionButton addDomainFAB;
 103
 104     // `deletedDomainPosition` is used in an inner and outer class in `onOptionsItemSelected()`.
 105     private int deletedDomainPosition;
 106
 107     // `restartAfterRotate` is used in `onCreate()` and `onCreateOptionsMenu()`.
 108     private boolean restartAfterRotate;
 109
 110     // `domainSettingsDisplayedBeforeRotate` is used in `onCreate()` and `onCreateOptionsMenu()`.
 111     private boolean domainSettingsDisplayedBeforeRotate;
 112
 113     // `domainSettingsDatabaseIdBeforeRotate` is used in `onCreate()` and `onCreateOptionsMenu()`.
 114     private int domainSettingsDatabaseIdBeforeRotate;
 115
 116     // `goDirectlyToDatabaseId` is used in `onCreate()` and `onCreateOptionsMenu()`.
 117     private int goDirectlyToDatabaseId;
 118
 119     // `closeOnBack` is used in `onCreate()`, `onOptionsItemSelected()` and `onBackPressed()`.
 120     private boolean closeOnBack;
 121
 122     // `coordinatorLayout` is use in `onCreate()`, `onOptionsItemSelected()`, and `onSaveInstanceState()`.
 123     private View coordinatorLayout;
 124
 125     // `resources` is used in `onCreate()`, `onOptionsItemSelected()`, and `onSaveInstanceState()`.
 126     private Resources resources;
 127
 128     @Override
 129     protected void onCreate(Bundle savedInstanceState) {
 130         // Get a handle for the shared preferences.
 131         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
 132
 133         // Get the screenshot preference.
 134         boolean allowScreenshots = sharedPreferences.getBoolean("allow_screenshots", false);
 135
 136         // Disable screenshots if not allowed.
 137         if (!allowScreenshots) {
 138             getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
 139         }
 140
 141         // Set the theme.
 142         setTheme(R.style.PrivacyBrowser);
 143
 144         // Run the default commands.
 145         super.onCreate(savedInstanceState);
 146
 147         // Extract the values from `savedInstanceState` if it is not `null`.
 148         if (savedInstanceState != null) {
 149             restartAfterRotate = true;
 150             domainSettingsDisplayedBeforeRotate = savedInstanceState.getBoolean("domain_settings_displayed");
 151             domainSettingsDatabaseIdBeforeRotate = savedInstanceState.getInt("domain_settings_database_id");
 152         }
 153
 154         // Get the launching intent
 155         Intent intent = getIntent();
 156
 157         // Extract the domain to load if there is one.  `-1` is the default value.
 158         goDirectlyToDatabaseId = intent.getIntExtra("load_domain", -1);
 159
 160         // Get the status of close-on-back, which is true when the domains activity is called from the options menu.
 161         closeOnBack = intent.getBooleanExtra("close_on_back", false);
 162
 163         // Get the current URL.
 164         String currentUrl = intent.getStringExtra("current_url");
 165
 166         // Store the current SSL certificate information in class variables.
 167         sslIssuedToCName = intent.getStringExtra("ssl_issued_to_cname");
 168         sslIssuedToOName = intent.getStringExtra("ssl_issued_to_oname");
 169         sslIssuedToUName = intent.getStringExtra("ssl_issued_to_uname");
 170         sslIssuedByCName = intent.getStringExtra("ssl_issued_by_cname");
 171         sslIssuedByOName = intent.getStringExtra("ssl_issued_by_oname");
 172         sslIssuedByUName = intent.getStringExtra("ssl_issued_by_uname");
 173         sslStartDateLong = intent.getLongExtra("ssl_start_date", 0);
 174         sslEndDateLong = intent.getLongExtra("ssl_end_date", 0);
 175         currentIpAddresses = intent.getStringExtra("current_ip_addresses");
 176
 177         // Set the content view.
 178         setContentView(R.layout.domains_coordinatorlayout);
 179
 180         // Populate the class variables.
 181         coordinatorLayout = findViewById(R.id.domains_coordinatorlayout);
 182         resources = getResources();
 183
 184         // `SupportActionBar` from `android.support.v7.app.ActionBar` must be used until the minimum API is >= 21.
 185         final Toolbar toolbar = findViewById(R.id.domains_toolbar);
 186         setSupportActionBar(toolbar);
 187
 188         // Get a handle for the action bar.
 189         ActionBar actionBar = getSupportActionBar();
 190
 191         // Remove the incorrect lint warning that the action bar might be null.
 192         assert actionBar != null;
 193
 194         // Set the back arrow on the action bar.
 195         actionBar.setDisplayHomeAsUpEnabled(true);
 196
 197         // Initialize the database handler.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
 198         domainsDatabaseHelper = new DomainsDatabaseHelper(this, null, null, 0);
 199
 200         // Determine if we are in two pane mode.  `domain_settings_fragment_container` does not exist on devices with a width less than 900dp.
 201         twoPanedMode = (findViewById(R.id.domain_settings_fragment_container) != null);
 202
 203         // Get a handle for the add domain floating action button.
 204         addDomainFAB = findViewById(R.id.add_domain_fab);
 205
 206         // Configure the add domain floating action button.
 207         addDomainFAB.setOnClickListener((View view) -> {
 208             // Remove the incorrect warning below that the current URL might be null.
 209             assert currentUrl != null;
 210
 211             // Create an add domain dialog.
 212             DialogFragment addDomainDialog = AddDomainDialog.addDomain(currentUrl);
 213
 214             // Show the add domain dialog.
 215             addDomainDialog.show(getSupportFragmentManager(), resources.getString(R.string.add_domain));
 216         });
 217     }
 218
 219     @Override
 220     public boolean onCreateOptionsMenu(Menu menu) {
 221         // Inflate the menu.
 222         getMenuInflater().inflate(R.menu.domains_options_menu, menu);
 223
 224         // Store `deleteMenuItem` for future use.
 225         deleteMenuItem = menu.findItem(R.id.delete_domain);
 226
 227         // Only display `deleteMenuItem` (initially) in two-paned mode.
 228         deleteMenuItem.setVisible(twoPanedMode);
 229
 230         // Get a handle for the fragment manager.
 231         FragmentManager fragmentManager = getSupportFragmentManager();
 232
 233         // Display the fragments.  This must be done from `onCreateOptionsMenu()` instead of `onCreate()` because `populateDomainsListView()` needs `deleteMenuItem` to be inflated.
 234         if (restartAfterRotate && domainSettingsDisplayedBeforeRotate) {  // The device was rotated and domain settings were displayed previously.
 235             if (twoPanedMode) {  // The device is in two-paned mode.
 236                 // Reset `restartAfterRotate`.
 237                 restartAfterRotate = false;
 238
 239                 // Display `DomainsListFragment`.
 240                 DomainsListFragment domainsListFragment = new DomainsListFragment();
 241                 fragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
 242                 fragmentManager.executePendingTransactions();
 243
 244                 // Populate the list of domains.  `domainSettingsDatabaseId` highlights the domain that was highlighted before the rotation.
 245                 populateDomainsListView(domainSettingsDatabaseIdBeforeRotate);
 246             } else {  // The device is in single-paned mode.
 247                 // Reset `restartAfterRotate`.
 248                 restartAfterRotate = false;
 249
 250                 // Store the current domain database ID.
 251                 currentDomainDatabaseId = domainSettingsDatabaseIdBeforeRotate;
 252
 253                 // Add `currentDomainDatabaseId` to `argumentsBundle`.
 254                 Bundle argumentsBundle = new Bundle();
 255                 argumentsBundle.putInt(DomainSettingsFragment.DATABASE_ID, currentDomainDatabaseId);
 256
 257                 // Add `argumentsBundle` to `domainSettingsFragment`.
 258                 DomainSettingsFragment domainSettingsFragment = new DomainSettingsFragment();
 259                 domainSettingsFragment.setArguments(argumentsBundle);
 260
 261                 // Show `deleteMenuItem`.
 262                 deleteMenuItem.setVisible(true);
 263
 264                 // Hide the add domain floating action button.
 265                 addDomainFAB.hide();
 266
 267                 // Display `domainSettingsFragment`.
 268                 fragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainSettingsFragment).commit();
 269             }
 270         } else {  // The device was not rotated or, if it was, domain settings were not displayed previously.
 271             if (goDirectlyToDatabaseId >=0) {  // Load the indicated domain settings.
 272                 // Store the current domain database ID.
 273                 currentDomainDatabaseId = goDirectlyToDatabaseId;
 274
 275                 if (twoPanedMode) {  // The device is in two-paned mode.
 276                     // Display `DomainsListFragment`.
 277                     DomainsListFragment domainsListFragment = new DomainsListFragment();
 278                     fragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
 279                     fragmentManager.executePendingTransactions();
 280
 281                     // Populate the list of domains.  `domainSettingsDatabaseId` highlights the domain that was highlighted before the rotation.
 282                     populateDomainsListView(goDirectlyToDatabaseId);
 283                 } else {  // The device is in single-paned mode.
 284                     // Add the domain ID to be loaded to `argumentsBundle`.
 285                     Bundle argumentsBundle = new Bundle();
 286                     argumentsBundle.putInt(DomainSettingsFragment.DATABASE_ID, goDirectlyToDatabaseId);
 287
 288                     // Add `argumentsBundle` to `domainSettingsFragment`.
 289                     DomainSettingsFragment domainSettingsFragment = new DomainSettingsFragment();
 290                     domainSettingsFragment.setArguments(argumentsBundle);
 291
 292                     // Show `deleteMenuItem`.
 293                     deleteMenuItem.setVisible(true);
 294
 295                     // Hide the add domain floating action button.
 296                     addDomainFAB.hide();
 297
 298                     // Display `domainSettingsFragment`.
 299                     fragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainSettingsFragment).commit();
 300                 }
 301             } else {  // Highlight the first domain.
 302                 // Display `DomainsListFragment`.
 303                 DomainsListFragment domainsListFragment = new DomainsListFragment();
 304                 fragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
 305                 fragmentManager.executePendingTransactions();
 306
 307                 // Populate the list of domains.  `-1` highlights the first domain.
 308                 populateDomainsListView(-1);
 309             }
 310         }
 311
 312         // Success!
 313         return true;
 314     }
 315
 316     @Override
 317     public boolean onOptionsItemSelected(MenuItem menuItem) {
 318         // Get the ID of the menu item that was selected.
 319         int menuItemID = menuItem.getItemId();
 320
 321         // Get a handle for the fragment manager.
 322         FragmentManager fragmentManager = getSupportFragmentManager();
 323
 324         switch (menuItemID) {
 325             case android.R.id.home:  // The home arrow is identified as `android.R.id.home`, not just `R.id.home`.
 326                 if (twoPanedMode) {  // The device is in two-paned mode.
 327                     // Save the current domain settings if the domain settings fragment is displayed.
 328                     if (findViewById(R.id.domain_settings_scrollview) != null) {
 329                         saveDomainSettings(coordinatorLayout, resources);
 330                     }
 331
 332                     // Dismiss the undo delete `SnackBar` if it is shown.
 333                     if (undoDeleteSnackbar != null && undoDeleteSnackbar.isShown()) {
 334                         // Set the close flag.
 335                         closeActivityAfterDismissingSnackbar = true;
 336
 337                         // Dismiss the snackbar.
 338                         undoDeleteSnackbar.dismiss();
 339                     } else {
 340                         // Go home.
 341                         NavUtils.navigateUpFromSameTask(this);
 342                     }
 343                 } else if (closeOnBack) {  // Go directly back to the main WebView activity because the domains activity was launched from the options menu.
 344                     // Save the current domain settings.
 345                     saveDomainSettings(coordinatorLayout, resources);
 346
 347                     // Go home.
 348                     NavUtils.navigateUpFromSameTask(this);
 349                 } else if (findViewById(R.id.domain_settings_scrollview) != null) {  // The device is in single-paned mode and the domain settings fragment is displayed.
 350                     // Save the current domain settings.
 351                     saveDomainSettings(coordinatorLayout, resources);
 352
 353                     // Display the domains list fragment.
 354                     DomainsListFragment domainsListFragment = new DomainsListFragment();
 355                     fragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
 356                     fragmentManager.executePendingTransactions();
 357
 358                     // Populate the list of domains.  `-1` highlights the first domain if in two-paned mode.  It has no effect in single-paned mode.
 359                     populateDomainsListView(-1);
 360
 361                     // Show the add domain floating action button.
 362                     addDomainFAB.show();
 363
 364                     // Hide the delete menu item.
 365                     deleteMenuItem.setVisible(false);
 366                 } else {  // The device is in single-paned mode and `DomainsListFragment` is displayed.
 367                     // Dismiss the undo delete `SnackBar` if it is shown.
 368                     if (undoDeleteSnackbar != null && undoDeleteSnackbar.isShown()) {
 369                         // Set the close flag.
 370                         closeActivityAfterDismissingSnackbar = true;
 371
 372                         // Dismiss the snackbar.
 373                         undoDeleteSnackbar.dismiss();
 374                     } else {
 375                         // Go home.
 376                         NavUtils.navigateUpFromSameTask(this);
 377                     }
 378                 }
 379                 break;
 380
 381             case R.id.delete_domain:
 382                 // Reset close-on-back, which otherwise can cause errors if the system attempts to save settings for a domain that no longer exists.
 383                 closeOnBack = false;
 384
 385                 // Store a copy of `currentDomainDatabaseId` because it could change while the `Snackbar` is displayed.
 386                 final int databaseIdToDelete = currentDomainDatabaseId;
 387
 388                 // Update the fragments and menu items.
 389                 if (twoPanedMode) {  // Two-paned mode.
 390                     // Store the deleted domain position, which is needed if `Undo` is selected in the `Snackbar`.
 391                     deletedDomainPosition = domainsListView.getCheckedItemPosition();
 392
 393                     // Disable the options `MenuItems`.
 394                     deleteMenuItem.setEnabled(false);
 395                     deleteMenuItem.setIcon(R.drawable.delete_disabled);
 396
 397                     // Remove the domain settings fragment.
 398                     fragmentManager.beginTransaction().remove(Objects.requireNonNull(fragmentManager.findFragmentById(R.id.domain_settings_fragment_container))).commit();
 399                 } else {  // Single-paned mode.
 400                     // Display `DomainsListFragment`.
 401                     DomainsListFragment domainsListFragment = new DomainsListFragment();
 402                     fragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
 403                     fragmentManager.executePendingTransactions();
 404
 405                     // Show the add domain floating action button.
 406                     addDomainFAB.show();
 407
 408                     // Hide `deleteMenuItem`.
 409                     deleteMenuItem.setVisible(false);
 410                 }
 411
 412                 // Get a `Cursor` that does not show the domain to be deleted.
 413                 Cursor domainsPendingDeleteCursor = domainsDatabaseHelper.getDomainNameCursorOrderedByDomainExcept(databaseIdToDelete);
 414
 415                 // Setup `domainsPendingDeleteCursorAdapter` with `this` context.  `false` disables `autoRequery`.
 416                 CursorAdapter domainsPendingDeleteCursorAdapter = new CursorAdapter(this, domainsPendingDeleteCursor, false) {
 417                     @Override
 418                     public View newView(Context context, Cursor cursor, ViewGroup parent) {
 419                         // Inflate the individual item layout.  `false` does not attach it to the root.
 420                         return getLayoutInflater().inflate(R.layout.domain_name_linearlayout, parent, false);
 421                     }
 422
 423                     @Override
 424                     public void bindView(View view, Context context, Cursor cursor) {
 425                         // Set the domain name.
 426                         String domainNameString = cursor.getString(cursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME));
 427                         TextView domainNameTextView = view.findViewById(R.id.domain_name_textview);
 428                         domainNameTextView.setText(domainNameString);
 429                     }
 430                 };
 431
 432                 // Update the handle for the current `domains_listview`.
 433                 domainsListView = findViewById(R.id.domains_listview);
 434
 435                 // Update the `ListView`.
 436                 domainsListView.setAdapter(domainsPendingDeleteCursorAdapter);
 437
 438                 // Get a handle for the activity.
 439                 Activity activity = this;
 440
 441                 // Display a snackbar.
 442                 undoDeleteSnackbar = Snackbar.make(domainsListView, R.string.domain_deleted, Snackbar.LENGTH_LONG)
 443                         .setAction(R.string.undo, (View v) -> {
 444                             // Do nothing because everything will be handled by `onDismissed()` below.
 445                         })
 446                         .addCallback(new Snackbar.Callback() {
 447                             @Override
 448                             public void onDismissed(Snackbar snackbar, int event) {
 449                                 // Run commands based on the event.
 450                                 if (event == Snackbar.Callback.DISMISS_EVENT_ACTION) {  // The user pushed the `Undo` button.
 451                                     // Store the database ID in arguments bundle.
 452                                     Bundle argumentsBundle = new Bundle();
 453                                     argumentsBundle.putInt(DomainSettingsFragment.DATABASE_ID, databaseIdToDelete);
 454
 455                                     // Add the arguments bundle to the domain settings fragment.
 456                                     DomainSettingsFragment domainSettingsFragment = new DomainSettingsFragment();
 457                                     domainSettingsFragment.setArguments(argumentsBundle);
 458
 459                                     // Display the correct fragments.
 460                                     if (twoPanedMode) {  // The device in in two-paned mode.
 461                                         // Get a `Cursor` with the current contents of the domains database.
 462                                         Cursor undoDeleteDomainsCursor = domainsDatabaseHelper.getDomainNameCursorOrderedByDomain();
 463
 464                                         // Setup `domainsCursorAdapter` with `this` context.  `false` disables `autoRequery`.
 465                                         CursorAdapter undoDeleteDomainsCursorAdapter = new CursorAdapter(getApplicationContext(), undoDeleteDomainsCursor, false) {
 466                                             @Override
 467                                             public View newView(Context context, Cursor cursor, ViewGroup parent) {
 468                                                 // Inflate the individual item layout.  `false` does not attach it to the root.
 469                                                 return getLayoutInflater().inflate(R.layout.domain_name_linearlayout, parent, false);
 470                                             }
 471
 472                                             @Override
 473                                             public void bindView(View view, Context context, Cursor cursor) {
 474                                                 // Set the domain name.
 475                                                 String domainNameString = cursor.getString(cursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME));
 476                                                 TextView domainNameTextView = view.findViewById(R.id.domain_name_textview);
 477                                                 domainNameTextView.setText(domainNameString);
 478                                             }
 479                                         };
 480
 481                                         // Update the domains list view.
 482                                         domainsListView.setAdapter(undoDeleteDomainsCursorAdapter);
 483
 484                                         // Select the previously deleted domain in the list view.
 485                                         domainsListView.setItemChecked(deletedDomainPosition, true);
 486
 487                                         // Display the domain settings fragment.
 488                                         fragmentManager.beginTransaction().replace(R.id.domain_settings_fragment_container, domainSettingsFragment).commit();
 489
 490                                         // Enable the options delete menu item.
 491                                         deleteMenuItem.setEnabled(true);
 492
 493                                         // Get the current theme status.
 494                                         int currentThemeStatus = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
 495
 496                                         // Set the delete menu item icon according to the theme.
 497                                         if (currentThemeStatus == Configuration.UI_MODE_NIGHT_YES) {
 498                                             deleteMenuItem.setIcon(R.drawable.delete_night);
 499                                         } else {
 500                                             deleteMenuItem.setIcon(R.drawable.delete_day);
 501                                         }
 502                                     } else {  // The device in in one-paned mode.
 503                                         // Display `domainSettingsFragment`.
 504                                         fragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainSettingsFragment).commit();
 505
 506                                         // Hide the add domain floating action button.
 507                                         addDomainFAB.hide();
 508
 509                                         // Show and enable `deleteMenuItem`.
 510                                         deleteMenuItem.setVisible(true);
 511
 512                                         // Display `domainSettingsFragment`.
 513                                         fragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainSettingsFragment).commit();
 514                                     }
 515                                 } else {  // The snackbar was dismissed without the undo button being pushed.
 516                                     // Delete the selected domain.
 517                                     domainsDatabaseHelper.deleteDomain(databaseIdToDelete);
 518
 519                                     // Enable the delete menu item if the system was waiting for a snackbar to be dismissed.
 520                                     if (dismissingSnackbar) {
 521                                         // Create a `Runnable` to enable the delete menu item.
 522                                         Runnable enableDeleteMenuItemRunnable = () -> {
 523                                             // Enable the delete menu item according to the display mode.
 524                                             if (twoPanedMode) {  // Two-paned mode.
 525                                                 // Enable the delete menu item.
 526                                                 deleteMenuItem.setEnabled(true);
 527
 528                                                 // Get the current theme status.
 529                                                 int currentThemeStatus = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
 530
 531                                                 // Set the delete menu item icon according to the theme.
 532                                                 if (currentThemeStatus == Configuration.UI_MODE_NIGHT_YES) {
 533                                                     deleteMenuItem.setIcon(R.drawable.delete_night);
 534                                                 } else {
 535                                                     deleteMenuItem.setIcon(R.drawable.delete_day);
 536                                                 }
 537                                             } else {  // Single-paned mode.
 538                                                 // Show the delete menu item.
 539                                                 deleteMenuItem.setVisible(true);
 540                                             }
 541
 542                                             // Reset the dismissing snackbar tracker.
 543                                             dismissingSnackbar = false;
 544                                         };
 545
 546                                         // Enable the delete menu icon after 100 milliseconds to make sure that the previous domain has been deleted from the database.
 547                                         Handler handler = new Handler();
 548                                         handler.postDelayed(enableDeleteMenuItemRunnable, 100);
 549                                     }
 550
 551                                     // Close the activity if back was pressed.
 552                                     if (closeActivityAfterDismissingSnackbar) {
 553                                         // Go home.
 554                                         NavUtils.navigateUpFromSameTask(activity);
 555                                     }
 556                                 }
 557                             }
 558                         });
 559
 560                 // Show the Snackbar.
 561                 undoDeleteSnackbar.show();
 562                 break;
 563         }
 564
 565         // Consume the event.
 566         return true;
 567     }
 568
 569     @Override
 570     protected void onSaveInstanceState(@NonNull Bundle outState) {
 571         // Store the current `DomainSettingsFragment` state in `outState`.
 572         if (findViewById(R.id.domain_settings_scrollview) != null) {  // `DomainSettingsFragment` is displayed.
 573             // Save any changes that have been made to the domain settings.
 574             saveDomainSettings(coordinatorLayout, resources);
 575
 576             // Store `DomainSettingsDisplayed`.
 577             outState.putBoolean("domain_settings_displayed", true);
 578             outState.putInt("domain_settings_database_id", DomainSettingsFragment.databaseId);
 579         } else {  // `DomainSettingsFragment` is not displayed.
 580             outState.putBoolean("domain_settings_displayed", false);
 581             outState.putInt("domain_settings_database_id", -1);
 582         }
 583
 584         super.onSaveInstanceState(outState);
 585     }
 586
 587     // Control what the navigation bar back button does.
 588     @Override
 589     public void onBackPressed() {
 590         // Get a handle for the fragment manager.
 591         FragmentManager fragmentManager = getSupportFragmentManager();
 592
 593         if (twoPanedMode) {  // The device is in two-paned mode.
 594             // Save the current domain settings if the domain settings fragment is displayed.
 595             if (findViewById(R.id.domain_settings_scrollview) != null) {
 596                 saveDomainSettings(coordinatorLayout, resources);
 597             }
 598
 599             // Dismiss the undo delete SnackBar if it is shown.
 600             if ((undoDeleteSnackbar != null) && undoDeleteSnackbar.isShown()) {
 601                 // Set the close flag.
 602                 closeActivityAfterDismissingSnackbar = true;
 603
 604                 // Dismiss the snackbar.
 605                 undoDeleteSnackbar.dismiss();
 606             } else {
 607                 // Pass `onBackPressed()` to the system.
 608                 super.onBackPressed();
 609             }
 610         } else if (closeOnBack) {  // Go directly back to the main WebView activity because the domains activity was launched from the options menu.
 611             // Save the current domain settings.
 612             saveDomainSettings(coordinatorLayout, resources);
 613
 614             // Pass `onBackPressed()` to the system.
 615             super.onBackPressed();
 616         } else if (findViewById(R.id.domain_settings_scrollview) != null) {  // The device is in single-paned mode and domain settings fragment is displayed.
 617             // Save the current domain settings.
 618             saveDomainSettings(coordinatorLayout, resources);
 619
 620             // Display the domains list fragment.
 621             DomainsListFragment domainsListFragment = new DomainsListFragment();
 622             fragmentManager.beginTransaction().replace(R.id.domains_listview_fragment_container, domainsListFragment).commit();
 623             fragmentManager.executePendingTransactions();
 624
 625             // Populate the list of domains.  `-1` highlights the first domain if in two-paned mode.  It has no effect in single-paned mode.
 626             populateDomainsListView(-1);
 627
 628             // Show the add domain floating action button.
 629             addDomainFAB.show();
 630
 631             // Hide the delete menu item.
 632             deleteMenuItem.setVisible(false);
 633         } else {  // The device is in single-paned mode and the domain list fragment is displayed.
 634             // Dismiss the undo delete SnackBar if it is shown.
 635             if ((undoDeleteSnackbar != null) && undoDeleteSnackbar.isShown()) {
 636                 // Set the close flag.
 637                 closeActivityAfterDismissingSnackbar = true;
 638
 639                 // Dismiss the snackbar.
 640                 undoDeleteSnackbar.dismiss();
 641             } else {
 642                 // Pass `onBackPressed()` to the system.
 643                 super.onBackPressed();
 644             }
 645         }
 646     }
 647
 648     @Override
 649     public void onAddDomain(@NonNull DialogFragment dialogFragment) {
 650         // Dismiss the undo delete snackbar if it is currently displayed.
 651         if ((undoDeleteSnackbar != null) && undoDeleteSnackbar.isShown()) {
 652             undoDeleteSnackbar.dismiss();
 653         }
 654
 655         // Remove the incorrect lint warning below that the dialog might be null.
 656         assert dialogFragment.getDialog() != null;
 657
 658         // Get a handle for the domain name edit text.
 659         EditText domainNameEditText = dialogFragment.getDialog().findViewById(R.id.domain_name_edittext);
 660
 661         // Get the domain name string.
 662         String domainNameString = domainNameEditText.getText().toString();
 663
 664         // Create the domain and store the database ID in `currentDomainDatabaseId`.
 665         currentDomainDatabaseId = domainsDatabaseHelper.addDomain(domainNameString);
 666
 667         // Display the newly created domain.
 668         if (twoPanedMode) {  // The device in in two-paned mode.
 669             populateDomainsListView(currentDomainDatabaseId);
 670         } else {  // The device is in single-paned mode.
 671             // Hide the add domain floating action button.
 672             addDomainFAB.hide();
 673
 674             // Show and enable `deleteMenuItem`.
 675             DomainsActivity.deleteMenuItem.setVisible(true);
 676
 677             // Add the current domain database ID to the arguments bundle.
 678             Bundle argumentsBundle = new Bundle();
 679             argumentsBundle.putInt(DomainSettingsFragment.DATABASE_ID, currentDomainDatabaseId);
 680
 681             // Add and arguments bundle to the domain setting fragment.
 682             DomainSettingsFragment domainSettingsFragment = new DomainSettingsFragment();
 683             domainSettingsFragment.setArguments(argumentsBundle);
 684
 685             // Display the domain settings fragment.
 686             getSupportFragmentManager().beginTransaction().replace(R.id.domains_listview_fragment_container, domainSettingsFragment).commit();
 687         }
 688     }
 689
 690     public void saveDomainSettings(View view, Resources resources) {
 691         // Get handles for the domain settings.
 692         EditText domainNameEditText = view.findViewById(R.id.domain_settings_name_edittext);
 693         Switch javaScriptSwitch = view.findViewById(R.id.javascript_switch);
 694         Switch firstPartyCookiesSwitch = view.findViewById(R.id.first_party_cookies_switch);
 695         Switch thirdPartyCookiesSwitch = view.findViewById(R.id.third_party_cookies_switch);
 696         Switch domStorageSwitch = view.findViewById(R.id.dom_storage_switch);
 697         Switch formDataSwitch = view.findViewById(R.id.form_data_switch);  // Form data can be removed once the minimum API >= 26.
 698         Switch easyListSwitch = view.findViewById(R.id.easylist_switch);
 699         Switch easyPrivacySwitch = view.findViewById(R.id.easyprivacy_switch);
 700         Switch fanboysAnnoyanceSwitch = view.findViewById(R.id.fanboys_annoyance_list_switch);
 701         Switch fanboysSocialBlockingSwitch = view.findViewById(R.id.fanboys_social_blocking_list_switch);
 702         Switch ultraListSwitch = view.findViewById(R.id.ultralist_switch);
 703         Switch ultraPrivacySwitch = view.findViewById(R.id.ultraprivacy_switch);
 704         Switch blockAllThirdPartyRequestsSwitch = view.findViewById(R.id.block_all_third_party_requests_switch);
 705         Spinner userAgentSpinner = view.findViewById(R.id.user_agent_spinner);
 706         EditText customUserAgentEditText = view.findViewById(R.id.custom_user_agent_edittext);
 707         Spinner fontSizeSpinner = view.findViewById(R.id.font_size_spinner);
 708         EditText customFontSizeEditText = view.findViewById(R.id.custom_font_size_edittext);
 709         Spinner swipeToRefreshSpinner = view.findViewById(R.id.swipe_to_refresh_spinner);
 710         Spinner nightModeSpinner = view.findViewById(R.id.night_mode_spinner);
 711         Spinner wideViewportSpinner = view.findViewById(R.id.wide_viewport_spinner);
 712         Spinner displayWebpageImagesSpinner = view.findViewById(R.id.display_webpage_images_spinner);
 713         Switch pinnedSslCertificateSwitch = view.findViewById(R.id.pinned_ssl_certificate_switch);
 714         RadioButton currentWebsiteCertificateRadioButton = view.findViewById(R.id.current_website_certificate_radiobutton);
 715         Switch pinnedIpAddressesSwitch = view.findViewById(R.id.pinned_ip_addresses_switch);
 716         RadioButton currentIpAddressesRadioButton = view.findViewById(R.id.current_ip_addresses_radiobutton);
 717
 718         // Extract the data for the domain settings.
 719         String domainNameString = domainNameEditText.getText().toString();
 720         boolean javaScript = javaScriptSwitch.isChecked();
 721         boolean firstPartyCookies = firstPartyCookiesSwitch.isChecked();
 722         boolean thirdPartyCookies = thirdPartyCookiesSwitch.isChecked();
 723         boolean domStorage  = domStorageSwitch.isChecked();
 724         boolean formData = formDataSwitch.isChecked();  // Form data can be removed once the minimum API >= 26.
 725         boolean easyList = easyListSwitch.isChecked();
 726         boolean easyPrivacy = easyPrivacySwitch.isChecked();
 727         boolean fanboysAnnoyance = fanboysAnnoyanceSwitch.isChecked();
 728         boolean fanboysSocialBlocking = fanboysSocialBlockingSwitch.isChecked();
 729         boolean ultraList = ultraListSwitch.isChecked();
 730         boolean ultraPrivacy = ultraPrivacySwitch.isChecked();
 731         boolean blockAllThirdPartyRequests = blockAllThirdPartyRequestsSwitch.isChecked();
 732         int userAgentSwitchPosition = userAgentSpinner.getSelectedItemPosition();
 733         int fontSizeSwitchPosition = fontSizeSpinner.getSelectedItemPosition();
 734         int swipeToRefreshInt = swipeToRefreshSpinner.getSelectedItemPosition();
 735         int nightModeInt = nightModeSpinner.getSelectedItemPosition();
 736         int wideViewportInt = wideViewportSpinner.getSelectedItemPosition();
 737         int displayWebpageImagesInt = displayWebpageImagesSpinner.getSelectedItemPosition();
 738         boolean pinnedSslCertificate = pinnedSslCertificateSwitch.isChecked();
 739         boolean pinnedIpAddress = pinnedIpAddressesSwitch.isChecked();
 740
 741         // Initialize the user agent name string.
 742         String userAgentName;
 743
 744         // Set the user agent name.
 745         switch (userAgentSwitchPosition) {
 746             case MainWebViewActivity.DOMAINS_SYSTEM_DEFAULT_USER_AGENT:
 747                 // Set the user agent name to be `System default user agent`.
 748                 userAgentName = resources.getString(R.string.system_default_user_agent);
 749                 break;
 750
 751             case MainWebViewActivity.DOMAINS_CUSTOM_USER_AGENT:
 752                 // Set the user agent name to be the custom user agent.
 753                 userAgentName = customUserAgentEditText.getText().toString();
 754                 break;
 755
 756             default:
 757                 // Get the array of user agent names.
 758                 String[] userAgentNameArray = resources.getStringArray(R.array.user_agent_names);
 759
 760                 // 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.
 761                 userAgentName = userAgentNameArray[userAgentSwitchPosition - 1];
 762         }
 763
 764         // Initialize the font size integer.  `0` indicates the system default font size.
 765         int fontSizeInt = 0;
 766
 767         // Use a custom font size if it is selected.
 768         if (fontSizeSwitchPosition == 1) {  // A custom font size is specified.
 769             // Get the custom font size from the edit text.
 770             fontSizeInt = Integer.parseInt(customFontSizeEditText.getText().toString());
 771         }
 772
 773         // Save the domain settings.
 774         domainsDatabaseHelper.updateDomain(DomainsActivity.currentDomainDatabaseId, domainNameString, javaScript, firstPartyCookies, thirdPartyCookies, domStorage, formData, easyList, easyPrivacy,
 775                 fanboysAnnoyance, fanboysSocialBlocking, ultraList, ultraPrivacy, blockAllThirdPartyRequests, userAgentName, fontSizeInt, swipeToRefreshInt, nightModeInt, wideViewportInt,
 776                 displayWebpageImagesInt, pinnedSslCertificate, pinnedIpAddress);
 777
 778         // Update the pinned SSL certificate if a new one is checked.
 779         if (currentWebsiteCertificateRadioButton.isChecked()) {
 780             // Update the database.
 781             domainsDatabaseHelper.updatePinnedSslCertificate(currentDomainDatabaseId, sslIssuedToCName, sslIssuedToOName, sslIssuedToUName, sslIssuedByCName, sslIssuedByOName, sslIssuedByUName,
 782                     sslStartDateLong, sslEndDateLong);
 783         }
 784
 785         // Update the pinned IP addresses if new ones are checked.
 786         if (currentIpAddressesRadioButton.isChecked()) {
 787             // Update the database.
 788             domainsDatabaseHelper.updatePinnedIpAddresses(currentDomainDatabaseId, currentIpAddresses);
 789         }
 790     }
 791
 792     private void populateDomainsListView(final int highlightedDomainDatabaseId) {
 793         // get a handle for the current `domains_listview`.
 794         domainsListView = findViewById(R.id.domains_listview);
 795
 796         // Get a `Cursor` with the current contents of the domains database.
 797         Cursor domainsCursor = domainsDatabaseHelper.getDomainNameCursorOrderedByDomain();
 798
 799         // Setup `domainsCursorAdapter` with `this` context.  `false` disables `autoRequery`.
 800         CursorAdapter domainsCursorAdapter = new CursorAdapter(getApplicationContext(), domainsCursor, false) {
 801             @Override
 802             public View newView(Context context, Cursor cursor, ViewGroup parent) {
 803                 // Inflate the individual item layout.  `false` does not attach it to the root.
 804                 return getLayoutInflater().inflate(R.layout.domain_name_linearlayout, parent, false);
 805             }
 806
 807             @Override
 808             public void bindView(View view, Context context, Cursor cursor) {
 809                 // Set the domain name.
 810                 String domainNameString = cursor.getString(cursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME));
 811                 TextView domainNameTextView = view.findViewById(R.id.domain_name_textview);
 812                 domainNameTextView.setText(domainNameString);
 813             }
 814         };
 815
 816         // Update the list view.
 817         domainsListView.setAdapter(domainsCursorAdapter);
 818
 819         // Display the domain settings in the second pane if operating in two pane mode and the database contains at least one domain.
 820         if (DomainsActivity.twoPanedMode && (domainsCursor.getCount() > 0)) {  // Two-paned mode is enabled and there is at least one domain.
 821             // Initialize `highlightedDomainPosition`.
 822             int highlightedDomainPosition = 0;
 823
 824             // Get the cursor position for the highlighted domain.
 825             for (int i = 0; i < domainsCursor.getCount(); i++) {
 826                 // Move to position `i` in the cursor.
 827                 domainsCursor.moveToPosition(i);
 828
 829                 // Get the database ID for this position.
 830                 int currentDatabaseId = domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper._ID));
 831
 832                 // Set `highlightedDomainPosition` if the database ID for this matches `highlightedDomainDatabaseId`.
 833                 if (highlightedDomainDatabaseId == currentDatabaseId) {
 834                     highlightedDomainPosition = i;
 835                 }
 836             }
 837
 838             // Select the highlighted domain.
 839             domainsListView.setItemChecked(highlightedDomainPosition, true);
 840
 841             // Get the database ID for the highlighted domain.
 842             domainsCursor.moveToPosition(highlightedDomainPosition);
 843             currentDomainDatabaseId = domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper._ID));
 844
 845             // Store the database ID in the arguments bundle.
 846             Bundle argumentsBundle = new Bundle();
 847             argumentsBundle.putInt(DomainSettingsFragment.DATABASE_ID, currentDomainDatabaseId);
 848
 849             // Add and arguments bundle to the domain settings fragment.
 850             DomainSettingsFragment domainSettingsFragment = new DomainSettingsFragment();
 851             domainSettingsFragment.setArguments(argumentsBundle);
 852
 853             // Display the domain settings fragment.
 854             getSupportFragmentManager().beginTransaction().replace(R.id.domain_settings_fragment_container, domainSettingsFragment).commit();
 855
 856             // Enable the delete options menu items.
 857             deleteMenuItem.setEnabled(true);
 858
 859             // Get the current theme status.
 860             int currentThemeStatus = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
 861
 862             // Set the delete icon according to the theme.
 863             if (currentThemeStatus == Configuration.UI_MODE_NIGHT_YES) {
 864                 deleteMenuItem.setIcon(R.drawable.delete_night);
 865             } else {
 866                 deleteMenuItem.setIcon(R.drawable.delete_day);
 867             }
 868         } else if (twoPanedMode) {  // Two-paned mode is enabled but there are no domains.
 869             // Disable the options `MenuItems`.
 870             deleteMenuItem.setEnabled(false);
 871             deleteMenuItem.setIcon(R.drawable.delete_disabled);
 872         }
 873     }
 874
 875     @Override
 876     public void dismissSnackbar() {
 877         // Dismiss the undo delete snackbar if it is shown.
 878         if (undoDeleteSnackbar != null && undoDeleteSnackbar.isShown()) {
 879             // Dismiss the snackbar.
 880             undoDeleteSnackbar.dismiss();
 881         }
 882     }
 883
 884     @Override
 885     public void onDestroy() {
 886         // Close the domains database helper.
 887         domainsDatabaseHelper.close();
 888
 889         // Run the default commands.
 890         super.onDestroy();
 891     }
 892 }