+ // Wait until the process has finished.
+ deleteAppWebviewProcess.waitFor();
+ } catch (Exception exception) {
+ // Do nothing if an error is thrown.
+ }
+ }
+
+ // Close Privacy Browser. `finishAndRemoveTask` also removes Privacy Browser from the recent app list.
+ finishAndRemoveTask();
+
+ // Remove the terminated program from RAM. The status code is `0`.
+ System.exit(0);
+ }
+
+ public void bookmarksBack(View view) {
+ if (currentBookmarksFolder.isEmpty()) { // The home folder is displayed.
+ // close the bookmarks drawer.
+ drawerLayout.closeDrawer(GravityCompat.END);
+ } else { // A subfolder is displayed.
+ // Place the former parent folder in `currentFolder`.
+ currentBookmarksFolder = bookmarksDatabaseHelper.getParentFolderName(currentBookmarksFolder);
+
+ // Load the new folder.
+ loadBookmarksFolder();
+ }
+ }
+
+ private void setCurrentWebView(int pageNumber) {
+ // Stop the swipe to refresh indicator if it is running
+ swipeRefreshLayout.setRefreshing(false);
+
+ // Get the WebView tab fragment.
+ WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(pageNumber);
+
+ // Get the fragment view.
+ View webViewFragmentView = webViewTabFragment.getView();
+
+ // Set the current WebView if the fragment view is not null.
+ if (webViewFragmentView != null) { // The fragment has been populated.
+ // Store the current WebView.
+ currentWebView = webViewFragmentView.findViewById(R.id.nestedscroll_webview);
+
+ // Update the status of swipe to refresh.
+ if (currentWebView.getSwipeToRefresh()) { // Swipe to refresh is enabled.
+ // Enable the swipe refresh layout if the WebView is scrolled all the way to the top. It is updated every time the scroll changes.
+ swipeRefreshLayout.setEnabled(currentWebView.getScrollY() == 0);
+ } else { // Swipe to refresh is disabled.
+ // Disable the swipe refresh layout.
+ swipeRefreshLayout.setEnabled(false);
+ }
+
+ // Get a handle for the cookie manager.
+ CookieManager cookieManager = CookieManager.getInstance();
+
+ // Set the cookie status.
+ cookieManager.setAcceptCookie(currentWebView.getAcceptCookies());
+
+ // Update the privacy icons. `true` redraws the icons in the app bar.
+ updatePrivacyIcons(true);
+
+ // Get a handle for the input method manager.
+ InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+
+ // Remove the lint warning below that the input method manager might be null.
+ assert inputMethodManager != null;
+
+ // Get the current URL.
+ String url = currentWebView.getUrl();
+
+ // Update the URL edit text if not loading a new intent. Otherwise, this will be handled by `onPageStarted()` (if called) and `onPageFinished()`.
+ if (!loadingNewIntent) { // A new intent is not being loaded.
+ if ((url == null) || url.equals("about:blank")) { // The WebView is blank.
+ // Display the hint in the URL edit text.
+ urlEditText.setText("");
+
+ // Request focus for the URL text box.
+ urlEditText.requestFocus();
+
+ // Display the keyboard.
+ inputMethodManager.showSoftInput(urlEditText, 0);
+ } else { // The WebView has a loaded URL.
+ // Clear the focus from the URL text box.
+ urlEditText.clearFocus();
+
+ // Hide the soft keyboard.
+ inputMethodManager.hideSoftInputFromWindow(currentWebView.getWindowToken(), 0);
+
+ // Display the current URL in the URL text box.
+ urlEditText.setText(url);
+
+ // Highlight the URL text.
+ highlightUrlText();
+ }
+ } else { // A new intent is being loaded.
+ // Reset the loading new intent tracker.
+ loadingNewIntent = false;
+ }
+
+ // Set the background to indicate the domain settings status.
+ if (currentWebView.getDomainSettingsApplied()) {
+ // Set a background on the URL relative layout to indicate that custom domain settings are being used.
+ urlRelativeLayout.setBackground(ResourcesCompat.getDrawable(getResources(), R.drawable.domain_settings_url_background, null));
+ } else {
+ // Remove any background on the URL relative layout.
+ urlRelativeLayout.setBackground(ResourcesCompat.getDrawable(getResources(), R.color.transparent, null));
+ }
+ } else { // The fragment has not been populated. Try again in 100 milliseconds.
+ // Create a handler to set the current WebView.
+ Handler setCurrentWebViewHandler = new Handler();
+
+ // Create a runnable to set the current WebView.
+ Runnable setCurrentWebWebRunnable = () -> {
+ // Set the current WebView.
+ setCurrentWebView(pageNumber);
+ };
+
+ // Try setting the current WebView again after 100 milliseconds.
+ setCurrentWebViewHandler.postDelayed(setCurrentWebWebRunnable, 100);
+ }
+ }
+
+ @SuppressLint("ClickableViewAccessibility")
+ @Override
+ public void initializeWebView(@NonNull NestedScrollWebView nestedScrollWebView, int pageNumber, @NonNull ProgressBar progressBar, @NonNull String url, boolean restoringState) {
+ // Get a handle for the shared preferences.
+ SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+
+ // Get the WebView theme.
+ String webViewTheme = sharedPreferences.getString(getString(R.string.webview_theme_key), getString(R.string.webview_theme_default_value));
+
+ // Get the WebView theme entry values string array.
+ String[] webViewThemeEntryValuesStringArray = getResources().getStringArray(R.array.webview_theme_entry_values);
+
+ // Set the WebView theme if device is running API >= 29 and algorithmic darkening is supported.
+ if ((Build.VERSION.SDK_INT >= 29) && WebViewFeature.isFeatureSupported(WebViewFeature.ALGORITHMIC_DARKENING)) {
+ // Set the WebView them. A switch statement cannot be used because the WebView theme entry values string array is not a compile time constant.
+ if (webViewTheme.equals(webViewThemeEntryValuesStringArray[1])) { // The light theme is selected.
+ // Turn off algorithmic darkening.
+ WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), false);
+
+ // Make the WebView visible. The WebView was created invisible in `webview_framelayout` to prevent a white background splash in night mode.
+ // If the system is currently in night mode, showing the WebView will be handled in `onProgressChanged()`.
+ nestedScrollWebView.setVisibility(View.VISIBLE);
+ } else if (webViewTheme.equals(webViewThemeEntryValuesStringArray[2])) { // The dark theme is selected.
+ // Turn on algorithmic darkening.
+ WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), true);
+ } else {
+ // The system default theme is selected.
+ int currentThemeStatus = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
+
+ // Set the algorithmic darkening according to the current system theme status.
+ if (currentThemeStatus == Configuration.UI_MODE_NIGHT_NO) { // The system is in day mode.
+ // Turn off algorithmic darkening.
+ WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), false);
+
+ // Make the WebView visible. The WebView was created invisible in `webview_framelayout` to prevent a white background splash in night mode.
+ // If the system is currently in night mode, showing the WebView will be handled in `onProgressChanged()`.
+ nestedScrollWebView.setVisibility(View.VISIBLE);
+ } else { // The system is in night mode.
+ // Turn on algorithmic darkening.
+ WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), true);
+ }
+ }
+ }
+
+ // Get a handle for the activity
+ Activity activity = this;
+
+ // Get a handle for the input method manager.
+ InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+
+ // Instantiate the blocklist helper.
+ BlocklistHelper blocklistHelper = new BlocklistHelper();
+
+ // Remove the lint warning below that the input method manager might be null.
+ assert inputMethodManager != null;
+
+ // Set the app bar scrolling.
+ nestedScrollWebView.setNestedScrollingEnabled(scrollAppBar);
+
+ // Allow pinch to zoom.
+ nestedScrollWebView.getSettings().setBuiltInZoomControls(true);
+
+ // Hide zoom controls.
+ nestedScrollWebView.getSettings().setDisplayZoomControls(false);
+
+ // Don't allow mixed content (HTTP and HTTPS) on the same website.
+ nestedScrollWebView.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_NEVER_ALLOW);
+
+ // Set the WebView to load in overview mode (zoomed out to the maximum width).
+ nestedScrollWebView.getSettings().setLoadWithOverviewMode(true);
+
+ // Explicitly disable geolocation.
+ nestedScrollWebView.getSettings().setGeolocationEnabled(false);
+
+ // Allow loading of file:// URLs. This is necessary for opening MHT web archives, which are copies into a temporary cache location.
+ nestedScrollWebView.getSettings().setAllowFileAccess(true);
+
+ // Create a double-tap gesture detector to toggle full-screen mode.
+ GestureDetector doubleTapGestureDetector = new GestureDetector(getApplicationContext(), new GestureDetector.SimpleOnGestureListener() {
+ // Override `onDoubleTap()`. All other events are handled using the default settings.
+ @Override
+ public boolean onDoubleTap(MotionEvent event) {
+ if (fullScreenBrowsingModeEnabled) { // Only process the double-tap if full screen browsing mode is enabled.
+ // Toggle the full screen browsing mode tracker.
+ inFullScreenBrowsingMode = !inFullScreenBrowsingMode;
+
+ // Toggle the full screen browsing mode.
+ if (inFullScreenBrowsingMode) { // Switch to full screen mode.
+ // Hide the app bar if specified.
+ if (hideAppBar) { // The app bar is hidden.
+ // Close the find on page bar if it is visible.
+ closeFindOnPage(null);
+
+ // Hide the tab linear layout.
+ tabsLinearLayout.setVisibility(View.GONE);
+
+ // Hide the action bar.
+ actionBar.hide();
+
+ // Set layout and scrolling parameters according to the position of the app bar.
+ if (bottomAppBar) { // The app bar is at the bottom.
+ // Reset the WebView padding to fill the available space.
+ swipeRefreshLayout.setPadding(0, 0, 0, 0);
+ } else { // The app bar is at the top.
+ // Check to see if the app bar is normally scrolled.
+ if (scrollAppBar) { // The app bar is scrolled when it is displayed.
+ // Get the swipe refresh layout parameters.
+ CoordinatorLayout.LayoutParams swipeRefreshLayoutParams = (CoordinatorLayout.LayoutParams) swipeRefreshLayout.getLayoutParams();
+
+ // Remove the off-screen scrolling layout.
+ swipeRefreshLayoutParams.setBehavior(null);
+ } else { // The app bar is not scrolled when it is displayed.
+ // Remove the padding from the top of the swipe refresh layout.
+ swipeRefreshLayout.setPadding(0, 0, 0, 0);
+
+ // The swipe refresh circle must be moved above the now removed status bar location.
+ swipeRefreshLayout.setProgressViewOffset(false, -200, defaultProgressViewEndOffset);
+ }
+ }
+ } else { // The app bar is not hidden.
+ // Adjust the UI for the bottom app bar.
+ if (bottomAppBar) {
+ // Adjust the UI according to the scrolling of the app bar.
+ if (scrollAppBar) {
+ // Reset the WebView padding to fill the available space.
+ swipeRefreshLayout.setPadding(0, 0, 0, 0);
+ } else {
+ // Move the WebView above the app bar layout.
+ swipeRefreshLayout.setPadding(0, 0, 0, appBarHeight);
+ }
+ }
+ }
+
+ /* Hide the system bars.
+ * SYSTEM_UI_FLAG_FULLSCREEN hides the status bar at the top of the screen.
+ * SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN makes the root frame layout fill the area that is normally reserved for the status bar.
+ * SYSTEM_UI_FLAG_HIDE_NAVIGATION hides the navigation bar on the bottom or right of the screen.
+ * SYSTEM_UI_FLAG_IMMERSIVE_STICKY makes the status and navigation bars translucent and automatically re-hides them after they are shown.
+ */
+ rootFrameLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
+ View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
+ } else { // Switch to normal viewing mode.
+ // Show the app bar if it was hidden.
+ if (hideAppBar) {
+ // Show the tab linear layout.
+ tabsLinearLayout.setVisibility(View.VISIBLE);
+
+ // Show the action bar.
+ actionBar.show();
+ }
+
+ // Set layout and scrolling parameters according to the position of the app bar.
+ if (bottomAppBar) { // The app bar is at the bottom.
+ // Adjust the UI.
+ if (scrollAppBar) {
+ // Reset the WebView padding to fill the available space.
+ swipeRefreshLayout.setPadding(0, 0, 0, 0);
+ } else {
+ // Move the WebView above the app bar layout.
+ swipeRefreshLayout.setPadding(0, 0, 0, appBarHeight);
+ }
+ } else { // The app bar is at the top.
+ // Check to see if the app bar is normally scrolled.
+ if (scrollAppBar) { // The app bar is scrolled when it is displayed.
+ // Get the swipe refresh layout parameters.
+ CoordinatorLayout.LayoutParams swipeRefreshLayoutParams = (CoordinatorLayout.LayoutParams) swipeRefreshLayout.getLayoutParams();
+
+ // Add the off-screen scrolling layout.
+ swipeRefreshLayoutParams.setBehavior(new AppBarLayout.ScrollingViewBehavior());
+ } else { // The app bar is not scrolled when it is displayed.
+ // The swipe refresh layout must be manually moved below the app bar layout.
+ swipeRefreshLayout.setPadding(0, appBarHeight, 0, 0);
+
+ // The swipe to refresh circle doesn't always hide itself completely unless it is moved up 10 pixels.
+ swipeRefreshLayout.setProgressViewOffset(false, defaultProgressViewStartOffset - 10 + appBarHeight, defaultProgressViewEndOffset + appBarHeight);
+ }
+ }
+
+ // Remove the `SYSTEM_UI` flags from the root frame layout.
+ rootFrameLayout.setSystemUiVisibility(0);
+ }
+
+ // Consume the double-tap.
+ return true;
+ } else { // Do not consume the double-tap because full screen browsing mode is disabled.
+ return false;
+ }
+ }
+
+ @Override
+ public boolean onFling(MotionEvent motionEvent1, MotionEvent motionEvent2, float velocityX, float velocityY) {
+ // Scroll the bottom app bar if enabled.
+ if (bottomAppBar && scrollAppBar && !objectAnimator.isRunning()) {
+ // Calculate the Y change.
+ float motionY = motionEvent2.getY() - motionEvent1.getY();
+
+ // Scroll the app bar if the change is greater than 50 pixels.
+ if (motionY > 50) {
+ // Animate the bottom app bar onto the screen.
+ objectAnimator = ObjectAnimator.ofFloat(appBarLayout, "translationY", 0);
+ } else if (motionY < -50) {
+ // Animate the bottom app bar off the screen.
+ objectAnimator = ObjectAnimator.ofFloat(appBarLayout, "translationY", appBarLayout.getHeight());
+ }
+
+ // Make it so.
+ objectAnimator.start();
+ }
+
+ // Do not consume the event.
+ return false;
+ }
+ });
+
+ // Pass all touch events on the WebView through the double-tap gesture detector.
+ nestedScrollWebView.setOnTouchListener((View view, MotionEvent event) -> {
+ // Call `performClick()` on the view, which is required for accessibility.
+ view.performClick();
+
+ // Send the event to the gesture detector.
+ return doubleTapGestureDetector.onTouchEvent(event);
+ });
+
+ // Register the WebView for a context menu. This is used to see link targets and download images.
+ registerForContextMenu(nestedScrollWebView);
+
+ // Allow the downloading of files.
+ nestedScrollWebView.setDownloadListener((String downloadUrl, String userAgent, String contentDisposition, String mimetype, long contentLength) -> {
+ // Check the download preference.
+ if (downloadWithExternalApp) { // Download with an external app.
+ downloadUrlWithExternalApp(downloadUrl);
+ } else { // Handle the download inside of Privacy Browser.
+ // Define a formatted file size string.
+ String formattedFileSizeString;
+
+ // Process the content length if it contains data.
+ if (contentLength > 0) { // The content length is greater than 0.
+ // Format the content length as a string.
+ formattedFileSizeString = NumberFormat.getInstance().format(contentLength) + " " + getString(R.string.bytes);
+ } else { // The content length is not greater than 0.
+ // Set the formatted file size string to be `unknown size`.
+ formattedFileSizeString = getString(R.string.unknown_size);
+ }
+
+ // Get the file name from the content disposition.
+ String fileNameString = PrepareSaveDialog.getFileNameFromHeaders(this, contentDisposition, mimetype, downloadUrl);
+
+ // Instantiate the save dialog.
+ DialogFragment saveDialogFragment = SaveDialog.saveUrl(downloadUrl, formattedFileSizeString, fileNameString, userAgent,
+ nestedScrollWebView.getAcceptCookies());
+
+ // Try to show the dialog. The download listener continues to function even when the WebView is paused. Attempting to display a dialog in that state leads to a crash.
+ try {
+ // Show the save dialog. It must be named `save_dialog` so that the file picker can update the file name.
+ saveDialogFragment.show(getSupportFragmentManager(), getString(R.string.save_dialog));
+ } catch (Exception exception) { // The dialog could not be shown.
+ // Add the dialog to the pending dialog array list. It will be displayed in `onStart()`.
+ pendingDialogsArrayList.add(new PendingDialog(saveDialogFragment, getString(R.string.save_dialog)));
+ }
+ }
+ });
+
+ // Update the find on page count.
+ nestedScrollWebView.setFindListener(new WebView.FindListener() {
+ // Get a handle for `findOnPageCountTextView`.
+ final TextView findOnPageCountTextView = findViewById(R.id.find_on_page_count_textview);
+
+ @Override
+ public void onFindResultReceived(int activeMatchOrdinal, int numberOfMatches, boolean isDoneCounting) {
+ if ((isDoneCounting) && (numberOfMatches == 0)) { // There are no matches.
+ // Set `findOnPageCountTextView` to `0/0`.
+ findOnPageCountTextView.setText(R.string.zero_of_zero);
+ } else if (isDoneCounting) { // There are matches.
+ // `activeMatchOrdinal` is zero-based.
+ int activeMatch = activeMatchOrdinal + 1;
+
+ // Build the match string.
+ String matchString = activeMatch + "/" + numberOfMatches;
+
+ // Set `findOnPageCountTextView`.
+ findOnPageCountTextView.setText(matchString);
+ }
+ }
+ });
+
+ // Process scroll changes.
+ nestedScrollWebView.setOnScrollChangeListener((view, scrollX, scrollY, oldScrollX, oldScrollY) -> {
+ // Set the swipe to refresh status.
+ if (nestedScrollWebView.getSwipeToRefresh()) {
+ // Only enable swipe to refresh if the WebView is scrolled to the top.
+ swipeRefreshLayout.setEnabled(nestedScrollWebView.getScrollY() == 0);
+ } else {
+ // Disable swipe to refresh.
+ swipeRefreshLayout.setEnabled(false);
+ }
+
+ // Reinforce the system UI visibility flags if in full screen browsing mode.
+ // This hides the status and navigation bars, which are displayed if other elements are shown, like dialog boxes, the options menu, or the keyboard.
+ if (inFullScreenBrowsingMode) {
+ /* Hide the system bars.
+ * SYSTEM_UI_FLAG_FULLSCREEN hides the status bar at the top of the screen.
+ * SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN makes the root frame layout fill the area that is normally reserved for the status bar.
+ * SYSTEM_UI_FLAG_HIDE_NAVIGATION hides the navigation bar on the bottom or right of the screen.
+ * SYSTEM_UI_FLAG_IMMERSIVE_STICKY makes the status and navigation bars translucent and automatically re-hides them after they are shown.
+ */
+ rootFrameLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
+ View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
+ }
+ });
+
+ // Set the web chrome client.
+ nestedScrollWebView.setWebChromeClient(new WebChromeClient() {
+ // Update the progress bar when a page is loading.
+ @Override
+ public void onProgressChanged(WebView view, int progress) {
+ // Update the progress bar.
+ progressBar.setProgress(progress);
+
+ // Set the visibility of the progress bar.
+ if (progress < 100) {
+ // Show the progress bar.
+ progressBar.setVisibility(View.VISIBLE);
+ } else {
+ // Hide the progress bar.
+ progressBar.setVisibility(View.GONE);
+
+ //Stop the swipe to refresh indicator if it is running
+ swipeRefreshLayout.setRefreshing(false);
+
+ // Make the current WebView visible. If this is a new tab, the current WebView would have been created invisible in `webview_framelayout` to prevent a white background splash in night mode.
+ nestedScrollWebView.setVisibility(View.VISIBLE);
+ }
+ }
+
+ // Set the favorite icon when it changes.
+ @Override
+ public void onReceivedIcon(WebView view, Bitmap icon) {
+ // Only update the favorite icon if the website has finished loading.
+ if (progressBar.getVisibility() == View.GONE) {
+ // Store the new favorite icon.
+ nestedScrollWebView.setFavoriteOrDefaultIcon(icon);
+
+ // Get the current page position.
+ int currentPosition = webViewPagerAdapter.getPositionForId(nestedScrollWebView.getWebViewFragmentId());
+
+ // Get the current tab.
+ TabLayout.Tab tab = tabLayout.getTabAt(currentPosition);
+
+ // Check to see if the tab has been populated.
+ if (tab != null) {
+ // Get the custom view from the tab.
+ View tabView = tab.getCustomView();
+
+ // Check to see if the custom tab view has been populated.
+ if (tabView != null) {
+ // Get the favorite icon image view from the tab.
+ ImageView tabFavoriteIconImageView = tabView.findViewById(R.id.favorite_icon_imageview);
+
+ // Display the favorite icon in the tab.
+ tabFavoriteIconImageView.setImageBitmap(Bitmap.createScaledBitmap(icon, 64, 64, true));
+ }
+ }
+ }
+ }
+
+ // Save a copy of the title when it changes.
+ @Override
+ public void onReceivedTitle(WebView view, String title) {
+ // Get the current page position.
+ int currentPosition = webViewPagerAdapter.getPositionForId(nestedScrollWebView.getWebViewFragmentId());
+
+ // Get the current tab.
+ TabLayout.Tab tab = tabLayout.getTabAt(currentPosition);
+
+ // Only populate the title text view if the tab has been fully created.
+ if (tab != null) {
+ // Get the custom view from the tab.
+ View tabView = tab.getCustomView();
+
+ // Only populate the title text view if the tab view has been fully populated.
+ if (tabView != null) {
+ // Get the title text view from the tab.
+ TextView tabTitleTextView = tabView.findViewById(R.id.title_textview);
+
+ // Set the title according to the URL.
+ if (title.equals("about:blank")) {
+ // Set the title to indicate a new tab.
+ tabTitleTextView.setText(R.string.new_tab);
+ } else {
+ // Set the title as the tab text.
+ tabTitleTextView.setText(title);
+ }
+ }
+ }
+ }
+
+ // Enter full screen video.
+ @Override
+ public void onShowCustomView(View video, CustomViewCallback callback) {
+ // Set the full screen video flag.
+ displayingFullScreenVideo = true;
+
+ // Hide the keyboard.
+ inputMethodManager.hideSoftInputFromWindow(nestedScrollWebView.getWindowToken(), 0);
+
+ // Hide the coordinator layout.
+ coordinatorLayout.setVisibility(View.GONE);
+
+ /* Hide the system bars.
+ * SYSTEM_UI_FLAG_FULLSCREEN hides the status bar at the top of the screen.
+ * SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN makes the root frame layout fill the area that is normally reserved for the status bar.
+ * SYSTEM_UI_FLAG_HIDE_NAVIGATION hides the navigation bar on the bottom or right of the screen.
+ * SYSTEM_UI_FLAG_IMMERSIVE_STICKY makes the status and navigation bars translucent and automatically re-hides them after they are shown.
+ */
+ rootFrameLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
+ View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
+
+ // Disable the sliding drawers.
+ drawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
+
+ // Add the video view to the full screen video frame layout.
+ fullScreenVideoFrameLayout.addView(video);
+
+ // Show the full screen video frame layout.
+ fullScreenVideoFrameLayout.setVisibility(View.VISIBLE);
+
+ // Disable the screen timeout while the video is playing. YouTube does this automatically, but not all other videos do.
+ fullScreenVideoFrameLayout.setKeepScreenOn(true);
+ }
+
+ // Exit full screen video.
+ @Override
+ public void onHideCustomView() {
+ // Exit the full screen video.
+ exitFullScreenVideo();
+ }
+
+ // Upload files.
+ @Override
+ public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {
+ // Store the file path callback.
+ fileChooserCallback = filePathCallback;
+
+ // Create an intent to open a chooser based on the file chooser parameters.
+ Intent fileChooserIntent = fileChooserParams.createIntent();
+
+ // Get a handle for the package manager.
+ PackageManager packageManager = getPackageManager();
+
+ // Check to see if the file chooser intent resolves to an installed package.
+ if (fileChooserIntent.resolveActivity(packageManager) != null) { // The file chooser intent is fine.
+ // Start the file chooser intent.
+ startActivityForResult(fileChooserIntent, BROWSE_FILE_UPLOAD_REQUEST_CODE);
+ } else { // The file chooser intent will cause a crash.
+ // Create a generic intent to open a chooser.
+ Intent genericFileChooserIntent = new Intent(Intent.ACTION_GET_CONTENT);
+
+ // Request an openable file.
+ genericFileChooserIntent.addCategory(Intent.CATEGORY_OPENABLE);
+
+ // Set the file type to everything.
+ genericFileChooserIntent.setType("*/*");
+
+ // Start the generic file chooser intent.
+ startActivityForResult(genericFileChooserIntent, BROWSE_FILE_UPLOAD_REQUEST_CODE);
+ }
+ return true;
+ }
+ });
+
+ nestedScrollWebView.setWebViewClient(new WebViewClient() {
+ // `shouldOverrideUrlLoading` makes this WebView the default handler for URLs inside the app, so that links are not kicked out to other apps.
+ // The deprecated `shouldOverrideUrlLoading` must be used until API >= 24.
+ @Override
+ public boolean shouldOverrideUrlLoading(WebView view, String url) {
+ // Sanitize the url.
+ url = sanitizeUrl(url);
+
+ // Handle the URL according to the type.
+ if (url.startsWith("http")) { // Load the URL in Privacy Browser.
+ // Load the URL. By using `loadUrl()`, instead of `loadUrlFromBase()`, the Referer header will never be sent.
+ loadUrl(nestedScrollWebView, url);
+
+ // Returning true indicates that Privacy Browser is manually handling the loading of the URL.
+ // Custom headers cannot be added if false is returned and the WebView handles the loading of the URL.
+ return true;
+ } else if (url.startsWith("mailto:")) { // Load the email address in an external email program.
+ // Use `ACTION_SENDTO` instead of `ACTION_SEND` so that only email programs are launched.
+ Intent emailIntent = new Intent(Intent.ACTION_SENDTO);
+
+ // Parse the url and set it as the data for the intent.
+ emailIntent.setData(Uri.parse(url));
+
+ // Open the email program in a new task instead of as part of Privacy Browser.
+ emailIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+ try {
+ // Make it so.
+ startActivity(emailIntent);
+ } catch (ActivityNotFoundException exception) {
+ // Display a snackbar.
+ Snackbar.make(currentWebView, getString(R.string.error) + " " + exception, Snackbar.LENGTH_INDEFINITE).show();
+ }
+
+
+ // Returning true indicates Privacy Browser is handling the URL by creating an intent.
+ return true;
+ } else if (url.startsWith("tel:")) { // Load the phone number in the dialer.
+ // Open the dialer and load the phone number, but wait for the user to place the call.
+ Intent dialIntent = new Intent(Intent.ACTION_DIAL);
+
+ // Add the phone number to the intent.
+ dialIntent.setData(Uri.parse(url));
+
+ // Open the dialer in a new task instead of as part of Privacy Browser.
+ dialIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+ try {
+ // Make it so.
+ startActivity(dialIntent);
+ } catch (ActivityNotFoundException exception) {
+ // Display a snackbar.
+ Snackbar.make(currentWebView, getString(R.string.error) + " " + exception, Snackbar.LENGTH_INDEFINITE).show();
+ }
+
+ // Returning true indicates Privacy Browser is handling the URL by creating an intent.
+ return true;
+ } else { // Load a system chooser to select an app that can handle the URL.
+ // Open an app that can handle the URL.
+ Intent genericIntent = new Intent(Intent.ACTION_VIEW);
+
+ // Add the URL to the intent.
+ genericIntent.setData(Uri.parse(url));
+
+ // List all apps that can handle the URL instead of just opening the first one.
+ genericIntent.addCategory(Intent.CATEGORY_BROWSABLE);
+
+ // Open the app in a new task instead of as part of Privacy Browser.
+ genericIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+ // Start the app or display a snackbar if no app is available to handle the URL.
+ try {
+ startActivity(genericIntent);
+ } catch (ActivityNotFoundException exception) {
+ Snackbar.make(nestedScrollWebView, getString(R.string.unrecognized_url) + " " + url, Snackbar.LENGTH_SHORT).show();
+ }
+
+ // Returning true indicates Privacy Browser is handling the URL by creating an intent.
+ return true;
+ }
+ }
+
+ // Check requests against the block lists. The deprecated `shouldInterceptRequest()` must be used until minimum API >= 21.
+ @Override
+ public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest webResourceRequest) {
+ // Get the URL.
+ String url = webResourceRequest.getUrl().toString();
+
+ // Check to see if the resource request is for the main URL.
+ if (url.equals(nestedScrollWebView.getCurrentUrl())) {
+ // `return null` loads the resource request, which should never be blocked if it is the main URL.
+ return null;
+ }
+
+ // Wait until the blocklists have been populated. When Privacy Browser is being resumed after having the process killed in the background it will try to load the URLs immediately.
+ while (ultraPrivacy == null) {
+ // The wait must be synchronized, which only lets one thread run on it at a time, or `java.lang.IllegalMonitorStateException` is thrown.
+ synchronized (this) {
+ try {
+ // Check to see if the blocklists have been populated after 100 ms.
+ wait(100);
+ } catch (InterruptedException exception) {
+ // Do nothing.
+ }
+ }
+ }
+
+ // Create an empty web resource response to be used if the resource request is blocked.
+ WebResourceResponse emptyWebResourceResponse = new WebResourceResponse("text/plain", "utf8", new ByteArrayInputStream("".getBytes()));
+
+ // Reset the whitelist results tracker.
+ String[] whitelistResultStringArray = null;
+
+ // Initialize the third party request tracker.
+ boolean isThirdPartyRequest = false;
+
+ // Get the current URL. `.getUrl()` throws an error because operations on the WebView cannot be made from this thread.
+ String currentBaseDomain = nestedScrollWebView.getCurrentDomainName();
+
+ // Store a copy of the current domain for use in later requests.
+ String currentDomain = currentBaseDomain;
+
+ // Get the request host name.
+ String requestBaseDomain = webResourceRequest.getUrl().getHost();
+
+ // Only check for third-party requests if the current base domain is not empty and the request domain is not null.
+ if (!currentBaseDomain.isEmpty() && (requestBaseDomain != null)) {
+ // Determine the current base domain.
+ while (currentBaseDomain.indexOf(".", currentBaseDomain.indexOf(".") + 1) > 0) { // There is at least one subdomain.
+ // Remove the first subdomain.
+ currentBaseDomain = currentBaseDomain.substring(currentBaseDomain.indexOf(".") + 1);
+ }
+
+ // Determine the request base domain.
+ while (requestBaseDomain.indexOf(".", requestBaseDomain.indexOf(".") + 1) > 0) { // There is at least one subdomain.
+ // Remove the first subdomain.
+ requestBaseDomain = requestBaseDomain.substring(requestBaseDomain.indexOf(".") + 1);
+ }
+
+ // Update the third party request tracker.
+ isThirdPartyRequest = !currentBaseDomain.equals(requestBaseDomain);
+ }
+
+ // Get the current WebView page position.
+ int webViewPagePosition = webViewPagerAdapter.getPositionForId(nestedScrollWebView.getWebViewFragmentId());
+
+ // Determine if the WebView is currently displayed.
+ boolean webViewDisplayed = (webViewPagePosition == tabLayout.getSelectedTabPosition());
+
+ // Block third-party requests if enabled.
+ if (isThirdPartyRequest && nestedScrollWebView.getBlockAllThirdPartyRequests()) {
+ // Add the result to the resource requests.
+ nestedScrollWebView.addResourceRequest(new String[]{BlocklistHelper.REQUEST_THIRD_PARTY, url});
+
+ // Increment the blocked requests counters.
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.THIRD_PARTY_REQUESTS);
+
+ // Update the titles of the blocklist menu items if the WebView is currently displayed.
+ if (webViewDisplayed) {
+ // Updating the UI must be run from the UI thread.
+ activity.runOnUiThread(() -> {
+ // Update the menu item titles.
+ navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+
+ // Update the options menu if it has been populated.
+ if (optionsMenu != null) {
+ optionsBlocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+ optionsBlockAllThirdPartyRequestsMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.THIRD_PARTY_REQUESTS) + " - " +
+ getString(R.string.block_all_third_party_requests));
+ }
+ });
+ }
+
+ // Return an empty web resource response.
+ return emptyWebResourceResponse;
+ }
+
+ // Check UltraList if it is enabled.
+ if (nestedScrollWebView.getUltraListEnabled()) {
+ // Check the URL against UltraList.
+ String[] ultraListResults = blocklistHelper.checkBlocklist(currentDomain, url, isThirdPartyRequest, ultraList);
+
+ // Process the UltraList results.
+ if (ultraListResults[0].equals(BlocklistHelper.REQUEST_BLOCKED)) { // The resource request matched UltraList's blacklist.
+ // Add the result to the resource requests.
+ nestedScrollWebView.addResourceRequest(new String[] {ultraListResults[0], ultraListResults[1], ultraListResults[2], ultraListResults[3], ultraListResults[4], ultraListResults[5]});
+
+ // Increment the blocked requests counters.
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.ULTRALIST);
+
+ // Update the titles of the blocklist menu items if the WebView is currently displayed.
+ if (webViewDisplayed) {
+ // Updating the UI must be run from the UI thread.
+ activity.runOnUiThread(() -> {
+ // Update the menu item titles.
+ navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+
+ // Update the options menu if it has been populated.
+ if (optionsMenu != null) {
+ optionsBlocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+ optionsUltraListMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.ULTRALIST) + " - " + getString(R.string.ultralist));
+ }
+ });
+ }
+
+ // The resource request was blocked. Return an empty web resource response.
+ return emptyWebResourceResponse;
+ } else if (ultraListResults[0].equals(BlocklistHelper.REQUEST_ALLOWED)) { // The resource request matched UltraList's whitelist.
+ // Add a whitelist entry to the resource requests array.
+ nestedScrollWebView.addResourceRequest(new String[] {ultraListResults[0], ultraListResults[1], ultraListResults[2], ultraListResults[3], ultraListResults[4], ultraListResults[5]});
+
+ // The resource request has been allowed by UltraPrivacy. `return null` loads the requested resource.
+ return null;
+ }
+ }
+
+ // Check UltraPrivacy if it is enabled.
+ if (nestedScrollWebView.getUltraPrivacyEnabled()) {
+ // Check the URL against UltraPrivacy.
+ String[] ultraPrivacyResults = blocklistHelper.checkBlocklist(currentDomain, url, isThirdPartyRequest, ultraPrivacy);
+
+ // Process the UltraPrivacy results.
+ if (ultraPrivacyResults[0].equals(BlocklistHelper.REQUEST_BLOCKED)) { // The resource request matched UltraPrivacy's blacklist.
+ // Add the result to the resource requests.
+ nestedScrollWebView.addResourceRequest(new String[] {ultraPrivacyResults[0], ultraPrivacyResults[1], ultraPrivacyResults[2], ultraPrivacyResults[3], ultraPrivacyResults[4],
+ ultraPrivacyResults[5]});
+
+ // Increment the blocked requests counters.
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.ULTRAPRIVACY);
+
+ // Update the titles of the blocklist menu items if the WebView is currently displayed.
+ if (webViewDisplayed) {
+ // Updating the UI must be run from the UI thread.
+ activity.runOnUiThread(() -> {
+ // Update the menu item titles.
+ navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+
+ // Update the options menu if it has been populated.
+ if (optionsMenu != null) {
+ optionsBlocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+ optionsUltraPrivacyMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.ULTRAPRIVACY) + " - " + getString(R.string.ultraprivacy));
+ }
+ });
+ }
+
+ // The resource request was blocked. Return an empty web resource response.
+ return emptyWebResourceResponse;
+ } else if (ultraPrivacyResults[0].equals(BlocklistHelper.REQUEST_ALLOWED)) { // The resource request matched UltraPrivacy's whitelist.
+ // Add a whitelist entry to the resource requests array.
+ nestedScrollWebView.addResourceRequest(new String[] {ultraPrivacyResults[0], ultraPrivacyResults[1], ultraPrivacyResults[2], ultraPrivacyResults[3], ultraPrivacyResults[4],
+ ultraPrivacyResults[5]});
+
+ // The resource request has been allowed by UltraPrivacy. `return null` loads the requested resource.
+ return null;
+ }
+ }
+
+ // Check EasyList if it is enabled.
+ if (nestedScrollWebView.getEasyListEnabled()) {
+ // Check the URL against EasyList.
+ String[] easyListResults = blocklistHelper.checkBlocklist(currentDomain, url, isThirdPartyRequest, easyList);
+
+ // Process the EasyList results.
+ if (easyListResults[0].equals(BlocklistHelper.REQUEST_BLOCKED)) { // The resource request matched EasyList's blacklist.
+ // Add the result to the resource requests.
+ nestedScrollWebView.addResourceRequest(new String[] {easyListResults[0], easyListResults[1], easyListResults[2], easyListResults[3], easyListResults[4], easyListResults[5]});
+
+ // Increment the blocked requests counters.
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.EASYLIST);
+
+ // Update the titles of the blocklist menu items if the WebView is currently displayed.
+ if (webViewDisplayed) {
+ // Updating the UI must be run from the UI thread.
+ activity.runOnUiThread(() -> {
+ // Update the menu item titles.
+ navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+
+ // Update the options menu if it has been populated.
+ if (optionsMenu != null) {
+ optionsBlocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+ optionsEasyListMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.EASYLIST) + " - " + getString(R.string.easylist));
+ }
+ });
+ }
+
+ // The resource request was blocked. Return an empty web resource response.
+ return emptyWebResourceResponse;
+ } else if (easyListResults[0].equals(BlocklistHelper.REQUEST_ALLOWED)) { // The resource request matched EasyList's whitelist.
+ // Update the whitelist result string array tracker.
+ whitelistResultStringArray = new String[] {easyListResults[0], easyListResults[1], easyListResults[2], easyListResults[3], easyListResults[4], easyListResults[5]};
+ }
+ }
+
+ // Check EasyPrivacy if it is enabled.
+ if (nestedScrollWebView.getEasyPrivacyEnabled()) {
+ // Check the URL against EasyPrivacy.
+ String[] easyPrivacyResults = blocklistHelper.checkBlocklist(currentDomain, url, isThirdPartyRequest, easyPrivacy);
+
+ // Process the EasyPrivacy results.
+ if (easyPrivacyResults[0].equals(BlocklistHelper.REQUEST_BLOCKED)) { // The resource request matched EasyPrivacy's blacklist.
+ // Add the result to the resource requests.
+ nestedScrollWebView.addResourceRequest(new String[] {easyPrivacyResults[0], easyPrivacyResults[1], easyPrivacyResults[2], easyPrivacyResults[3], easyPrivacyResults[4],
+ easyPrivacyResults[5]});
+
+ // Increment the blocked requests counters.
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.EASYPRIVACY);
+
+ // Update the titles of the blocklist menu items if the WebView is currently displayed.
+ if (webViewDisplayed) {
+ // Updating the UI must be run from the UI thread.
+ activity.runOnUiThread(() -> {
+ // Update the menu item titles.
+ navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+
+ // Update the options menu if it has been populated.
+ if (optionsMenu != null) {
+ optionsBlocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+ optionsEasyPrivacyMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.EASYPRIVACY) + " - " + getString(R.string.easyprivacy));
+ }
+ });
+ }
+
+ // The resource request was blocked. Return an empty web resource response.
+ return emptyWebResourceResponse;
+ } else if (easyPrivacyResults[0].equals(BlocklistHelper.REQUEST_ALLOWED)) { // The resource request matched EasyPrivacy's whitelist.
+ // Update the whitelist result string array tracker.
+ whitelistResultStringArray = new String[] {easyPrivacyResults[0], easyPrivacyResults[1], easyPrivacyResults[2], easyPrivacyResults[3], easyPrivacyResults[4], easyPrivacyResults[5]};
+ }
+ }
+
+ // Check Fanboy’s Annoyance List if it is enabled.
+ if (nestedScrollWebView.getFanboysAnnoyanceListEnabled()) {
+ // Check the URL against Fanboy's Annoyance List.
+ String[] fanboysAnnoyanceListResults = blocklistHelper.checkBlocklist(currentDomain, url, isThirdPartyRequest, fanboysAnnoyanceList);
+
+ // Process the Fanboy's Annoyance List results.
+ if (fanboysAnnoyanceListResults[0].equals(BlocklistHelper.REQUEST_BLOCKED)) { // The resource request matched Fanboy's Annoyance List's blacklist.
+ // Add the result to the resource requests.
+ nestedScrollWebView.addResourceRequest(new String[] {fanboysAnnoyanceListResults[0], fanboysAnnoyanceListResults[1], fanboysAnnoyanceListResults[2], fanboysAnnoyanceListResults[3],
+ fanboysAnnoyanceListResults[4], fanboysAnnoyanceListResults[5]});
+
+ // Increment the blocked requests counters.
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST);
+
+ // Update the titles of the blocklist menu items if the WebView is currently displayed.
+ if (webViewDisplayed) {
+ // Updating the UI must be run from the UI thread.
+ activity.runOnUiThread(() -> {
+ // Update the menu item titles.
+ navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+
+ // Update the options menu if it has been populated.
+ if (optionsMenu != null) {
+ optionsBlocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+ optionsFanboysAnnoyanceListMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST) + " - " +
+ getString(R.string.fanboys_annoyance_list));
+ }
+ });
+ }
+
+ // The resource request was blocked. Return an empty web resource response.
+ return emptyWebResourceResponse;
+ } else if (fanboysAnnoyanceListResults[0].equals(BlocklistHelper.REQUEST_ALLOWED)){ // The resource request matched Fanboy's Annoyance List's whitelist.
+ // Update the whitelist result string array tracker.
+ whitelistResultStringArray = new String[] {fanboysAnnoyanceListResults[0], fanboysAnnoyanceListResults[1], fanboysAnnoyanceListResults[2], fanboysAnnoyanceListResults[3],
+ fanboysAnnoyanceListResults[4], fanboysAnnoyanceListResults[5]};
+ }
+ } else if (nestedScrollWebView.getFanboysSocialBlockingListEnabled()) { // Only check Fanboy’s Social Blocking List if Fanboy’s Annoyance List is disabled.
+ // Check the URL against Fanboy's Annoyance List.
+ String[] fanboysSocialListResults = blocklistHelper.checkBlocklist(currentDomain, url, isThirdPartyRequest, fanboysSocialList);
+
+ // Process the Fanboy's Social Blocking List results.
+ if (fanboysSocialListResults[0].equals(BlocklistHelper.REQUEST_BLOCKED)) { // The resource request matched Fanboy's Social Blocking List's blacklist.
+ // Add the result to the resource requests.
+ nestedScrollWebView.addResourceRequest(new String[] {fanboysSocialListResults[0], fanboysSocialListResults[1], fanboysSocialListResults[2], fanboysSocialListResults[3],
+ fanboysSocialListResults[4], fanboysSocialListResults[5]});
+
+ // Increment the blocked requests counters.
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+ nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST);
+
+ // Update the titles of the blocklist menu items if the WebView is currently displayed.
+ if (webViewDisplayed) {
+ // Updating the UI must be run from the UI thread.
+ activity.runOnUiThread(() -> {
+ // Update the menu item titles.
+ navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+
+ // Update the options menu if it has been populated.
+ if (optionsMenu != null) {
+ optionsBlocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+ optionsFanboysSocialBlockingListMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST) + " - " +
+ getString(R.string.fanboys_social_blocking_list));
+ }
+ });
+ }
+
+ // The resource request was blocked. Return an empty web resource response.
+ return emptyWebResourceResponse;
+ } else if (fanboysSocialListResults[0].equals(BlocklistHelper.REQUEST_ALLOWED)) { // The resource request matched Fanboy's Social Blocking List's whitelist.
+ // Update the whitelist result string array tracker.
+ whitelistResultStringArray = new String[] {fanboysSocialListResults[0], fanboysSocialListResults[1], fanboysSocialListResults[2], fanboysSocialListResults[3],
+ fanboysSocialListResults[4], fanboysSocialListResults[5]};
+ }
+ }
+
+ // Add the request to the log because it hasn't been processed by any of the previous checks.
+ if (whitelistResultStringArray != null) { // The request was processed by a whitelist.
+ nestedScrollWebView.addResourceRequest(whitelistResultStringArray);
+ } else { // The request didn't match any blocklist entry. Log it as a default request.
+ nestedScrollWebView.addResourceRequest(new String[]{BlocklistHelper.REQUEST_DEFAULT, url});
+ }
+
+ // The resource request has not been blocked. `return null` loads the requested resource.
+ return null;
+ }
+
+ // Handle HTTP authentication requests.
+ @Override
+ public void onReceivedHttpAuthRequest(WebView view, HttpAuthHandler handler, String host, String realm) {
+ // Store the handler.
+ nestedScrollWebView.setHttpAuthHandler(handler);
+
+ // Instantiate an HTTP authentication dialog.
+ DialogFragment httpAuthenticationDialogFragment = HttpAuthenticationDialog.displayDialog(host, realm, nestedScrollWebView.getWebViewFragmentId());
+
+ // Show the HTTP authentication dialog.
+ httpAuthenticationDialogFragment.show(getSupportFragmentManager(), getString(R.string.http_authentication));
+ }
+
+ @Override
+ public void onPageStarted(WebView view, String url, Bitmap favicon) {
+ // Get the app bar layout height. This can't be done in `applyAppSettings()` because the app bar is not yet populated there.
+ // This should only be populated if it is greater than 0 because otherwise it will be reset to 0 if the app bar is hidden in full screen browsing mode.
+ if (appBarLayout.getHeight() > 0) appBarHeight = appBarLayout.getHeight();
+
+ // Set the padding and layout settings according to the position of the app bar.
+ if (bottomAppBar) { // The app bar is on the bottom.
+ // Adjust the UI.
+ if (scrollAppBar || (inFullScreenBrowsingMode && hideAppBar)) { // The app bar scrolls or full screen browsing mode is engaged with the app bar hidden.
+ // Reset the WebView padding to fill the available space.
+ swipeRefreshLayout.setPadding(0, 0, 0, 0);
+ } else { // The app bar doesn't scroll or full screen browsing mode is not engaged with the app bar hidden.
+ // Move the WebView above the app bar layout.
+ swipeRefreshLayout.setPadding(0, 0, 0, appBarHeight);
+ }
+ } else { // The app bar is on the top.
+ // Set the top padding of the swipe refresh layout according to the app bar scrolling preference. This can't be done in `appAppSettings()` because the app bar is not yet populated there.
+ if (scrollAppBar || (inFullScreenBrowsingMode && hideAppBar)) {
+ // No padding is needed because it will automatically be placed below the app bar layout due to the scrolling layout behavior.
+ swipeRefreshLayout.setPadding(0, 0, 0, 0);
+
+ // The swipe to refresh circle doesn't always hide itself completely unless it is moved up 10 pixels.
+ swipeRefreshLayout.setProgressViewOffset(false, defaultProgressViewStartOffset - 10, defaultProgressViewEndOffset);
+ } else {
+ // The swipe refresh layout must be manually moved below the app bar layout.
+ swipeRefreshLayout.setPadding(0, appBarHeight, 0, 0);
+
+ // The swipe to refresh circle doesn't always hide itself completely unless it is moved up 10 pixels.
+ swipeRefreshLayout.setProgressViewOffset(false, defaultProgressViewStartOffset - 10 + appBarHeight, defaultProgressViewEndOffset + appBarHeight);
+ }
+ }
+
+ // Reset the list of resource requests.
+ nestedScrollWebView.clearResourceRequests();
+
+ // Reset the requests counters.
+ nestedScrollWebView.resetRequestsCounters();
+
+ // Get the current page position.
+ int currentPagePosition = webViewPagerAdapter.getPositionForId(nestedScrollWebView.getWebViewFragmentId());
+
+ // Update the URL text bar if the page is currently selected and the URL edit text is not currently being edited.
+ if ((tabLayout.getSelectedTabPosition() == currentPagePosition) && !urlEditText.hasFocus()) {
+ // Display the formatted URL text.
+ urlEditText.setText(url);
+
+ // Apply text highlighting to the URL text box.
+ highlightUrlText();
+
+ // Hide the keyboard.
+ inputMethodManager.hideSoftInputFromWindow(nestedScrollWebView.getWindowToken(), 0);
+ }
+
+ // Reset the list of host IP addresses.
+ nestedScrollWebView.setCurrentIpAddresses("");
+
+ // Get a URI for the current URL.
+ Uri currentUri = Uri.parse(url);
+
+ // Get the IP addresses for the host.
+ new GetHostIpAddresses(activity, getSupportFragmentManager(), nestedScrollWebView).execute(currentUri.getHost());
+
+ // Replace Refresh with Stop if the options menu has been created. (The first WebView typically begins loading before the menu items are instantiated.)
+ if (optionsMenu != null) {
+ // Set the title.
+ optionsRefreshMenuItem.setTitle(R.string.stop);
+
+ // Set the icon if it is displayed in the AppBar.
+ if (displayAdditionalAppBarIcons)
+ optionsRefreshMenuItem.setIcon(R.drawable.close_blue);
+ }
+ }
+
+ @Override
+ public void onPageFinished(WebView view, String url) {
+ // Flush any cookies to persistent storage. The cookie manager has become very lazy about flushing cookies in recent versions.
+ if (nestedScrollWebView.getAcceptCookies()) {
+ CookieManager.getInstance().flush();
+ }
+
+ // Update the Refresh menu item if the options menu has been created.
+ if (optionsMenu != null) {
+ // Reset the Refresh title.
+ optionsRefreshMenuItem.setTitle(R.string.refresh);
+
+ // Reset the icon if it is displayed in the app bar.
+ if (displayAdditionalAppBarIcons)
+ optionsRefreshMenuItem.setIcon(R.drawable.refresh_enabled);
+ }
+
+ // Get the application's private data directory, which will be something like `/data/user/0/com.stoutner.privacybrowser.standard`,
+ // which links to `/data/data/com.stoutner.privacybrowser.standard`.
+ String privateDataDirectoryString = getApplicationInfo().dataDir;
+
+ // Clear the cache, history, and logcat if Incognito Mode is enabled.
+ if (incognitoModeEnabled) {
+ // Clear the cache. `true` includes disk files.
+ nestedScrollWebView.clearCache(true);
+
+ // Clear the back/forward history.
+ nestedScrollWebView.clearHistory();
+
+ // Manually delete cache folders.
+ try {
+ // Delete the main cache directory.
+ Runtime.getRuntime().exec("rm -rf " + privateDataDirectoryString + "/cache");
+ } catch (IOException exception) {
+ // Do nothing if an error is thrown.
+ }
+
+ // Clear the logcat.
+ try {
+ // Clear the logcat. `-c` clears the logcat. `-b all` clears all the buffers (instead of just crash, main, and system).
+ Runtime.getRuntime().exec("logcat -b all -c");
+ } catch (IOException exception) {
+ // Do nothing.
+ }
+ }
+
+ // Clear the `Service Worker` directory.
+ try {
+ // A `String[]` must be used because the directory contains a space and `Runtime.exec` will not escape the string correctly otherwise.
+ Runtime.getRuntime().exec(new String[]{"rm", "-rf", privateDataDirectoryString + "/app_webview/Default/Service Worker/"});
+ } catch (IOException exception) {
+ // Do nothing.
+ }
+
+ // Get the current page position.
+ int currentPagePosition = webViewPagerAdapter.getPositionForId(nestedScrollWebView.getWebViewFragmentId());
+
+ // Get the current URL from the nested scroll WebView. This is more accurate than using the URL passed into the method, which is sometimes not the final one.
+ String currentUrl = nestedScrollWebView.getUrl();
+
+ // Get the current tab.
+ TabLayout.Tab tab = tabLayout.getTabAt(currentPagePosition);
+
+ // Update the URL text bar if the page is currently selected and the user is not currently typing in the URL edit text.
+ // Crash records show that, in some crazy way, it is possible for the current URL to be blank at this point.
+ // Probably some sort of race condition when Privacy Browser is being resumed.
+ if ((tabLayout.getSelectedTabPosition() == currentPagePosition) && !urlEditText.hasFocus() && (currentUrl != null)) {
+ // Check to see if the URL is `about:blank`.
+ if (currentUrl.equals("about:blank")) { // The WebView is blank.
+ // Display the hint in the URL edit text.
+ urlEditText.setText("");
+
+ // Request focus for the URL text box.
+ urlEditText.requestFocus();
+
+ // Display the keyboard.
+ inputMethodManager.showSoftInput(urlEditText, 0);
+
+ // Apply the domain settings. This clears any settings from the previous domain.
+ applyDomainSettings(nestedScrollWebView, "", true, false, false);
+
+ // Only populate the title text view if the tab has been fully created.
+ if (tab != null) {
+ // Get the custom view from the tab.
+ View tabView = tab.getCustomView();
+
+ // Remove the incorrect warning below that the current tab view might be null.
+ assert tabView != null;
+
+ // Get the title text view from the tab.
+ TextView tabTitleTextView = tabView.findViewById(R.id.title_textview);
+
+ // Set the title as the tab text.
+ tabTitleTextView.setText(R.string.new_tab);
+ }
+ } else { // The WebView has loaded a webpage.
+ // Update the URL edit text if it is not currently being edited.
+ if (!urlEditText.hasFocus()) {
+ // Sanitize the current URL. This removes unwanted URL elements that were added by redirects, so that they won't be included if the URL is shared.
+ String sanitizedUrl = sanitizeUrl(currentUrl);
+
+ // Display the final URL. Getting the URL from the WebView instead of using the one provided by `onPageFinished()` makes websites like YouTube function correctly.
+ urlEditText.setText(sanitizedUrl);
+
+ // Apply text highlighting to the URL.
+ highlightUrlText();
+ }
+
+ // Only populate the title text view if the tab has been fully created.
+ if (tab != null) {
+ // Get the custom view from the tab.
+ View tabView = tab.getCustomView();
+
+ // Remove the incorrect warning below that the current tab view might be null.
+ assert tabView != null;
+
+ // Get the title text view from the tab.
+ TextView tabTitleTextView = tabView.findViewById(R.id.title_textview);
+
+ // Set the title as the tab text. Sometimes `onReceivedTitle()` is not called, especially when navigating history.
+ tabTitleTextView.setText(nestedScrollWebView.getTitle());
+ }
+ }
+ }
+ }
+
+ // Handle SSL Certificate errors. Suppress the lint warning that ignoring the error might be dangerous.
+ @SuppressLint("WebViewClientOnReceivedSslError")
+ @Override
+ public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
+ // Get the current website SSL certificate.
+ SslCertificate currentWebsiteSslCertificate = error.getCertificate();
+
+ // Extract the individual pieces of information from the current website SSL certificate.
+ String currentWebsiteIssuedToCName = currentWebsiteSslCertificate.getIssuedTo().getCName();
+ String currentWebsiteIssuedToOName = currentWebsiteSslCertificate.getIssuedTo().getOName();
+ String currentWebsiteIssuedToUName = currentWebsiteSslCertificate.getIssuedTo().getUName();
+ String currentWebsiteIssuedByCName = currentWebsiteSslCertificate.getIssuedBy().getCName();
+ String currentWebsiteIssuedByOName = currentWebsiteSslCertificate.getIssuedBy().getOName();
+ String currentWebsiteIssuedByUName = currentWebsiteSslCertificate.getIssuedBy().getUName();
+ Date currentWebsiteSslStartDate = currentWebsiteSslCertificate.getValidNotBeforeDate();
+ Date currentWebsiteSslEndDate = currentWebsiteSslCertificate.getValidNotAfterDate();
+
+ // Proceed to the website if the current SSL website certificate matches the pinned domain certificate.
+ if (nestedScrollWebView.hasPinnedSslCertificate()) {
+ // Get the pinned SSL certificate.
+ Pair<String[], Date[]> pinnedSslCertificatePair = nestedScrollWebView.getPinnedSslCertificate();
+
+ // Extract the arrays from the array list.
+ String[] pinnedSslCertificateStringArray = pinnedSslCertificatePair.getFirst();
+ Date[] pinnedSslCertificateDateArray = pinnedSslCertificatePair.getSecond();
+
+ // Check if the current SSL certificate matches the pinned certificate.
+ if (currentWebsiteIssuedToCName.equals(pinnedSslCertificateStringArray[0]) && currentWebsiteIssuedToOName.equals(pinnedSslCertificateStringArray[1]) &&
+ currentWebsiteIssuedToUName.equals(pinnedSslCertificateStringArray[2]) && currentWebsiteIssuedByCName.equals(pinnedSslCertificateStringArray[3]) &&
+ currentWebsiteIssuedByOName.equals(pinnedSslCertificateStringArray[4]) && currentWebsiteIssuedByUName.equals(pinnedSslCertificateStringArray[5]) &&
+ currentWebsiteSslStartDate.equals(pinnedSslCertificateDateArray[0]) && currentWebsiteSslEndDate.equals(pinnedSslCertificateDateArray[1])) {
+
+ // An SSL certificate is pinned and matches the current domain certificate. Proceed to the website without displaying an error.
+ handler.proceed();
+ }
+ } else { // Either there isn't a pinned SSL certificate or it doesn't match the current website certificate.
+ // Store the SSL error handler.
+ nestedScrollWebView.setSslErrorHandler(handler);
+
+ // Instantiate an SSL certificate error alert dialog.
+ DialogFragment sslCertificateErrorDialogFragment = SslCertificateErrorDialog.displayDialog(error, nestedScrollWebView.getWebViewFragmentId());
+
+ // Try to show the dialog. The SSL error handler continues to function even when the WebView is paused. Attempting to display a dialog in that state leads to a crash.
+ try {
+ // Show the SSL certificate error dialog.
+ sslCertificateErrorDialogFragment.show(getSupportFragmentManager(), getString(R.string.ssl_certificate_error));
+ } catch (Exception exception) {
+ // Add the dialog to the pending dialog array list. It will be displayed in `onStart()`.
+ pendingDialogsArrayList.add(new PendingDialog(sslCertificateErrorDialogFragment, getString(R.string.ssl_certificate_error)));
+ }
+ }
+ }
+ });
+
+ // Check to see if the state is being restored.
+ if (restoringState) { // The state is being restored.
+ // Resume the nested scroll WebView JavaScript timers.
+ nestedScrollWebView.resumeTimers();
+ } else if (pageNumber == 0) { // The first page is being loaded.
+ // Set this nested scroll WebView as the current WebView.
+ currentWebView = nestedScrollWebView;
+
+ // Initialize the URL to load string.
+ String urlToLoadString;
+
+ // Get the intent that started the app.
+ Intent launchingIntent = getIntent();
+
+ // Reset the intent. This prevents a duplicate tab from being created on restart.
+ setIntent(new Intent());
+
+ // Get the information from the intent.
+ String launchingIntentAction = launchingIntent.getAction();
+ Uri launchingIntentUriData = launchingIntent.getData();
+ String launchingIntentStringExtra = launchingIntent.getStringExtra(Intent.EXTRA_TEXT);
+
+ // Parse the launching intent URL.
+ if ((launchingIntentAction != null) && launchingIntentAction.equals(Intent.ACTION_WEB_SEARCH)) { // The intent contains a search string.
+ // Create an encoded URL string.
+ String encodedUrlString;
+
+ // Sanitize the search input and convert it to a search.
+ try {
+ encodedUrlString = URLEncoder.encode(launchingIntent.getStringExtra(SearchManager.QUERY), "UTF-8");
+ } catch (UnsupportedEncodingException exception) {
+ encodedUrlString = "";
+ }
+
+ // Store the web search as the URL to load.
+ urlToLoadString = searchURL + encodedUrlString;
+ } else if (launchingIntentUriData != null) { // The launching intent contains a URL formatted as a URI.
+ // Store the URI as a URL.
+ urlToLoadString = launchingIntentUriData.toString();
+ } else if (launchingIntentStringExtra != null) { // The launching intent contains text that might be a URL.
+ // Store the URL.
+ urlToLoadString = launchingIntentStringExtra;
+ } else if (!url.equals("")) { // The activity has been restarted.
+ // Load the saved URL.
+ urlToLoadString = url;
+ } else { // The is no URL in the intent.
+ // Store the homepage to be loaded.
+ urlToLoadString = sharedPreferences.getString("homepage", getString(R.string.homepage_default_value));
+ }
+
+ // Load the website if not waiting for the proxy.
+ if (waitingForProxy) { // Store the URL to be loaded in the Nested Scroll WebView.
+ nestedScrollWebView.setWaitingForProxyUrlString(urlToLoadString);
+ } else { // Load the URL.
+ loadUrl(nestedScrollWebView, urlToLoadString);
+ }
+
+ // Reset the intent. This prevents a duplicate tab from being created on a subsequent restart if loading an link from a new intent on restart.
+ // For example, this prevents a duplicate tab if a link is loaded from the Guide after changing the theme in the guide and then changing the theme again in the main activity.
+ setIntent(new Intent());
+ } else { // This is not the first tab.
+ // Load the URL.
+ loadUrl(nestedScrollWebView, url);
+
+ // Set the focus and display the keyboard if the URL is blank.
+ if (url.equals("")) {
+ // Request focus for the URL text box.
+ urlEditText.requestFocus();
+
+ // Create a display keyboard handler.
+ Handler displayKeyboardHandler = new Handler();
+
+ // Create a display keyboard runnable.
+ Runnable displayKeyboardRunnable = () -> {
+ // Display the keyboard.
+ inputMethodManager.showSoftInput(urlEditText, 0);
+ };
+
+ // Display the keyboard after 100 milliseconds, which leaves enough time for the tab to transition.
+ displayKeyboardHandler.postDelayed(displayKeyboardRunnable, 100);
+ }