+ // Convert the favorite icon byte array stream to a byte array.
+ byte[] favoriteIconByteArray = favoriteIconByteArrayOutputStream.toByteArray();
+
+ // Display the new bookmark below the current items in the (0 indexed) list.
+ int newBookmarkDisplayOrder = bookmarksListView.getCount();
+
+ // Create the bookmark.
+ bookmarksDatabaseHelper.createBookmark(bookmarkNameString, bookmarkUrlString, currentBookmarksFolder, newBookmarkDisplayOrder, favoriteIconByteArray);
+
+ // Update the bookmarks cursor with the current contents of this folder.
+ bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
+
+ // Update the list view.
+ bookmarksCursorAdapter.changeCursor(bookmarksCursor);
+
+ // Scroll to the new bookmark.
+ bookmarksListView.setSelection(newBookmarkDisplayOrder);
+ }
+
+ @Override
+ public void onCreateBookmarkFolder(DialogFragment dialogFragment) {
+ // Get handles for the views in the dialog fragment.
+ EditText createFolderNameEditText = dialogFragment.getDialog().findViewById(R.id.create_folder_name_edittext);
+ RadioButton defaultFolderIconRadioButton = dialogFragment.getDialog().findViewById(R.id.create_folder_default_icon_radiobutton);
+ ImageView folderIconImageView = dialogFragment.getDialog().findViewById(R.id.create_folder_default_icon);
+
+ // Get new folder name string.
+ String folderNameString = createFolderNameEditText.getText().toString();
+
+ // Create a folder icon bitmap.
+ Bitmap folderIconBitmap;
+
+ // Set the folder icon bitmap according to the dialog.
+ if (defaultFolderIconRadioButton.isChecked()) { // Use the default folder icon.
+ // Get the default folder icon drawable.
+ Drawable folderIconDrawable = folderIconImageView.getDrawable();
+
+ // Convert the folder icon drawable to a bitmap drawable.
+ BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
+
+ // Convert the folder icon bitmap drawable to a bitmap.
+ folderIconBitmap = folderIconBitmapDrawable.getBitmap();
+ } else { // Use the WebView favorite icon.
+ // Get a copy of the favorite icon bitmap.
+ folderIconBitmap = favoriteIconBitmap;
+
+ // Scale the folder icon bitmap down if it is larger than 256 x 256. Filtering uses bilinear interpolation.
+ if ((folderIconBitmap.getHeight() > 256) || (folderIconBitmap.getWidth() > 256)) {
+ folderIconBitmap = Bitmap.createScaledBitmap(folderIconBitmap, 256, 256, true);
+ }
+ }
+
+ // Create a folder icon byte array output stream.
+ ByteArrayOutputStream folderIconByteArrayOutputStream = new ByteArrayOutputStream();
+
+ // Convert the folder icon bitmap to a byte array. `0` is for lossless compression (the only option for a PNG).
+ folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, folderIconByteArrayOutputStream);
+
+ // Convert the folder icon byte array stream to a byte array.
+ byte[] folderIconByteArray = folderIconByteArrayOutputStream.toByteArray();
+
+ // Move all the bookmarks down one in the display order.
+ for (int i = 0; i < bookmarksListView.getCount(); i++) {
+ int databaseId = (int) bookmarksListView.getItemIdAtPosition(i);
+ bookmarksDatabaseHelper.updateDisplayOrder(databaseId, i + 1);
+ }
+
+ // Create the folder, which will be placed at the top of the `ListView`.
+ bookmarksDatabaseHelper.createFolder(folderNameString, currentBookmarksFolder, folderIconByteArray);
+
+ // Update the bookmarks cursor with the current contents of this folder.
+ bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
+
+ // Update the `ListView`.
+ bookmarksCursorAdapter.changeCursor(bookmarksCursor);
+
+ // Scroll to the new folder.
+ bookmarksListView.setSelection(0);
+ }
+
+ @Override
+ public void onSaveBookmark(DialogFragment dialogFragment, int selectedBookmarkDatabaseId) {
+ // Get handles for the views from `dialogFragment`.
+ EditText editBookmarkNameEditText = dialogFragment.getDialog().findViewById(R.id.edit_bookmark_name_edittext);
+ EditText editBookmarkUrlEditText = dialogFragment.getDialog().findViewById(R.id.edit_bookmark_url_edittext);
+ RadioButton currentBookmarkIconRadioButton = dialogFragment.getDialog().findViewById(R.id.edit_bookmark_current_icon_radiobutton);
+
+ // Store the bookmark strings.
+ String bookmarkNameString = editBookmarkNameEditText.getText().toString();
+ String bookmarkUrlString = editBookmarkUrlEditText.getText().toString();
+
+ // Update the bookmark.
+ if (currentBookmarkIconRadioButton.isChecked()) { // Update the bookmark without changing the favorite icon.
+ bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString);
+ } else { // Update the bookmark using the `WebView` favorite icon.
+ // Get a copy of the favorite icon bitmap.
+ Bitmap favoriteIcon = favoriteIconBitmap;
+
+ // Scale the favorite icon bitmap down if it is larger than 256 x 256. Filtering uses bilinear interpolation.
+ if ((favoriteIcon.getHeight() > 256) || (favoriteIcon.getWidth() > 256)) {
+ favoriteIcon = Bitmap.createScaledBitmap(favoriteIcon, 256, 256, true);
+ }
+
+ // Create a favorite icon byte array output stream.
+ ByteArrayOutputStream newFavoriteIconByteArrayOutputStream = new ByteArrayOutputStream();
+
+ // Convert the favorite icon bitmap to a byte array. `0` is for lossless compression (the only option for a PNG).
+ favoriteIcon.compress(Bitmap.CompressFormat.PNG, 0, newFavoriteIconByteArrayOutputStream);
+
+ // Convert the favorite icon byte array stream to a byte array.
+ byte[] newFavoriteIconByteArray = newFavoriteIconByteArrayOutputStream.toByteArray();
+
+ // Update the bookmark and the favorite icon.
+ bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString, newFavoriteIconByteArray);
+ }
+
+ // Update the bookmarks cursor with the current contents of this folder.
+ bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
+
+ // Update the list view.
+ bookmarksCursorAdapter.changeCursor(bookmarksCursor);
+ }
+
+ @Override
+ public void onSaveBookmarkFolder(DialogFragment dialogFragment, int selectedFolderDatabaseId) {
+ // Get handles for the views from `dialogFragment`.
+ EditText editFolderNameEditText = dialogFragment.getDialog().findViewById(R.id.edit_folder_name_edittext);
+ RadioButton currentFolderIconRadioButton = dialogFragment.getDialog().findViewById(R.id.edit_folder_current_icon_radiobutton);
+ RadioButton defaultFolderIconRadioButton = dialogFragment.getDialog().findViewById(R.id.edit_folder_default_icon_radiobutton);
+ ImageView defaultFolderIconImageView = dialogFragment.getDialog().findViewById(R.id.edit_folder_default_icon_imageview);
+
+ // Get the new folder name.
+ String newFolderNameString = editFolderNameEditText.getText().toString();
+
+ // Check if the favorite icon has changed.
+ if (currentFolderIconRadioButton.isChecked()) { // Only the name has changed.
+ // Update the name in the database.
+ bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, oldFolderNameString, newFolderNameString);
+ } else if (!currentFolderIconRadioButton.isChecked() && newFolderNameString.equals(oldFolderNameString)) { // Only the icon has changed.
+ // Create the new folder icon Bitmap.
+ Bitmap folderIconBitmap;
+
+ // Populate the new folder icon bitmap.
+ if (defaultFolderIconRadioButton.isChecked()) {
+ // Get the default folder icon drawable.
+ Drawable folderIconDrawable = defaultFolderIconImageView.getDrawable();
+
+ // Convert the folder icon drawable to a bitmap drawable.
+ BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
+
+ // Convert the folder icon bitmap drawable to a bitmap.
+ folderIconBitmap = folderIconBitmapDrawable.getBitmap();
+ } else { // Use the `WebView` favorite icon.
+ // Get a copy of the favorite icon bitmap.
+ folderIconBitmap = MainWebViewActivity.favoriteIconBitmap;
+
+ // Scale the folder icon bitmap down if it is larger than 256 x 256. Filtering uses bilinear interpolation.
+ if ((folderIconBitmap.getHeight() > 256) || (folderIconBitmap.getWidth() > 256)) {
+ folderIconBitmap = Bitmap.createScaledBitmap(folderIconBitmap, 256, 256, true);
+ }
+ }
+
+ // Create a folder icon byte array output stream.
+ ByteArrayOutputStream newFolderIconByteArrayOutputStream = new ByteArrayOutputStream();
+
+ // Convert the folder icon bitmap to a byte array. `0` is for lossless compression (the only option for a PNG).
+ folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, newFolderIconByteArrayOutputStream);
+
+ // Convert the folder icon byte array stream to a byte array.
+ byte[] newFolderIconByteArray = newFolderIconByteArrayOutputStream.toByteArray();
+
+ // Update the folder icon in the database.
+ bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, newFolderIconByteArray);
+ } else { // The folder icon and the name have changed.
+ // Get the new folder icon `Bitmap`.
+ Bitmap folderIconBitmap;
+ if (defaultFolderIconRadioButton.isChecked()) {
+ // Get the default folder icon drawable.
+ Drawable folderIconDrawable = defaultFolderIconImageView.getDrawable();
+
+ // Convert the folder icon drawable to a bitmap drawable.
+ BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable;
+
+ // Convert the folder icon bitmap drawable to a bitmap.
+ folderIconBitmap = folderIconBitmapDrawable.getBitmap();
+ } else { // Use the `WebView` favorite icon.
+ // Get a copy of the favorite icon bitmap.
+ folderIconBitmap = MainWebViewActivity.favoriteIconBitmap;
+
+ // Scale the folder icon bitmap down if it is larger than 256 x 256. Filtering uses bilinear interpolation.
+ if ((folderIconBitmap.getHeight() > 256) || (folderIconBitmap.getWidth() > 256)) {
+ folderIconBitmap = Bitmap.createScaledBitmap(folderIconBitmap, 256, 256, true);
+ }
+ }
+
+ // Create a folder icon byte array output stream.
+ ByteArrayOutputStream newFolderIconByteArrayOutputStream = new ByteArrayOutputStream();
+
+ // Convert the folder icon bitmap to a byte array. `0` is for lossless compression (the only option for a PNG).
+ folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, newFolderIconByteArrayOutputStream);
+
+ // Convert the folder icon byte array stream to a byte array.
+ byte[] newFolderIconByteArray = newFolderIconByteArrayOutputStream.toByteArray();
+
+ // Update the folder name and icon in the database.
+ bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, oldFolderNameString, newFolderNameString, newFolderIconByteArray);
+ }
+
+ // Update the bookmarks cursor with the current contents of this folder.
+ bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
+
+ // Update the `ListView`.
+ bookmarksCursorAdapter.changeCursor(bookmarksCursor);
+ }
+
+ @Override
+ public void onCloseDownloadLocationPermissionDialog(int downloadType) {
+ switch (downloadType) {
+ case DownloadLocationPermissionDialog.DOWNLOAD_FILE:
+ // Request the WRITE_EXTERNAL_STORAGE permission with a file request code.
+ ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE}, DOWNLOAD_FILE_REQUEST_CODE);
+ break;
+
+ case DownloadLocationPermissionDialog.DOWNLOAD_IMAGE:
+ // Request the WRITE_EXTERNAL_STORAGE permission with an image request code.
+ ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE}, DOWNLOAD_IMAGE_REQUEST_CODE);
+ break;
+ }
+ }
+
+ @Override
+ public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+ // Get a handle for the fragment manager.
+ FragmentManager fragmentManager = getSupportFragmentManager();
+
+ switch (requestCode) {
+ case DOWNLOAD_FILE_REQUEST_CODE:
+ // Show the download file alert dialog. When the dialog closes, the correct command will be used based on the permission status.
+ DialogFragment downloadFileDialogFragment = DownloadFileDialog.fromUrl(downloadUrl, downloadContentDisposition, downloadContentLength);
+
+ // On API 23, displaying the fragment must be delayed or the app will crash.
+ if (Build.VERSION.SDK_INT == 23) {
+ new Handler().postDelayed(() -> downloadFileDialogFragment.show(fragmentManager, getString(R.string.download)), 500);
+ } else {
+ downloadFileDialogFragment.show(fragmentManager, getString(R.string.download));
+ }
+
+ // Reset the download variables.
+ downloadUrl = "";
+ downloadContentDisposition = "";
+ downloadContentLength = 0;
+ break;
+
+ case DOWNLOAD_IMAGE_REQUEST_CODE:
+ // Show the download image alert dialog. When the dialog closes, the correct command will be used based on the permission status.
+ DialogFragment downloadImageDialogFragment = DownloadImageDialog.imageUrl(downloadImageUrl);
+
+ // On API 23, displaying the fragment must be delayed or the app will crash.
+ if (Build.VERSION.SDK_INT == 23) {
+ new Handler().postDelayed(() -> downloadImageDialogFragment.show(fragmentManager, getString(R.string.download)), 500);
+ } else {
+ downloadImageDialogFragment.show(fragmentManager, getString(R.string.download));
+ }
+
+ // Reset the image URL variable.
+ downloadImageUrl = "";
+ break;
+ }
+ }
+
+ @Override
+ public void onDownloadImage(DialogFragment dialogFragment, String imageUrl) {
+ // Download the image if it has an HTTP or HTTPS URI.
+ if (imageUrl.startsWith("http")) {
+ // Get a handle for the system `DOWNLOAD_SERVICE`.
+ DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
+
+ // Parse `imageUrl`.
+ DownloadManager.Request downloadRequest = new DownloadManager.Request(Uri.parse(imageUrl));
+
+ // Pass cookies to download manager if cookies are enabled. This is required to download images from websites that require a login.
+ // Code contributed 2017 Hendrik Knackstedt. Copyright assigned to Soren Stoutner <soren@stoutner.com>.
+ if (firstPartyCookiesEnabled) {
+ // Get the cookies for `imageUrl`.
+ String cookies = cookieManager.getCookie(imageUrl);
+
+ // Add the cookies to `downloadRequest`. In the HTTP request header, cookies are named `Cookie`.
+ downloadRequest.addRequestHeader("Cookie", cookies);
+ }
+
+ // Get the file name from the dialog fragment.
+ EditText downloadImageNameEditText = dialogFragment.getDialog().findViewById(R.id.download_image_name);
+ String imageName = downloadImageNameEditText.getText().toString();
+
+ // Specify the download location.
+ if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) { // External write permission granted.
+ // Download to the public download directory.
+ downloadRequest.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, imageName);
+ } else { // External write permission denied.
+ // Download to the app's external download directory.
+ downloadRequest.setDestinationInExternalFilesDir(this, Environment.DIRECTORY_DOWNLOADS, imageName);
+ }
+
+ // Allow `MediaScanner` to index the download if it is a media file.
+ downloadRequest.allowScanningByMediaScanner();
+
+ // Add the URL as the description for the download.
+ downloadRequest.setDescription(imageUrl);
+
+ // Show the download notification after the download is completed.
+ downloadRequest.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
+
+ // Remove the lint warning below that `downloadManager` might be `null`.
+ assert downloadManager != null;
+
+ // Initiate the download.
+ downloadManager.enqueue(downloadRequest);
+ } else { // The image is not an HTTP or HTTPS URI.
+ Snackbar.make(currentWebView, R.string.cannot_download_image, Snackbar.LENGTH_INDEFINITE).show();
+ }
+ }
+
+ @Override
+ public void onDownloadFile(DialogFragment dialogFragment, String downloadUrl) {
+ // Download the file if it has an HTTP or HTTPS URI.
+ if (downloadUrl.startsWith("http")) {
+ // Get a handle for the system `DOWNLOAD_SERVICE`.
+ DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
+
+ // Parse `downloadUrl`.
+ DownloadManager.Request downloadRequest = new DownloadManager.Request(Uri.parse(downloadUrl));
+
+ // Pass cookies to download manager if cookies are enabled. This is required to download files from websites that require a login.
+ // Code contributed 2017 Hendrik Knackstedt. Copyright assigned to Soren Stoutner <soren@stoutner.com>.
+ if (firstPartyCookiesEnabled) {
+ // Get the cookies for `downloadUrl`.
+ String cookies = cookieManager.getCookie(downloadUrl);
+
+ // Add the cookies to `downloadRequest`. In the HTTP request header, cookies are named `Cookie`.
+ downloadRequest.addRequestHeader("Cookie", cookies);
+ }
+
+ // Get the file name from the dialog fragment.
+ EditText downloadFileNameEditText = dialogFragment.getDialog().findViewById(R.id.download_file_name);
+ String fileName = downloadFileNameEditText.getText().toString();
+
+ // Specify the download location.
+ if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) { // External write permission granted.
+ // Download to the public download directory.
+ downloadRequest.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);
+ } else { // External write permission denied.
+ // Download to the app's external download directory.
+ downloadRequest.setDestinationInExternalFilesDir(this, Environment.DIRECTORY_DOWNLOADS, fileName);
+ }
+
+ // Allow `MediaScanner` to index the download if it is a media file.
+ downloadRequest.allowScanningByMediaScanner();
+
+ // Add the URL as the description for the download.
+ downloadRequest.setDescription(downloadUrl);
+
+ // Show the download notification after the download is completed.
+ downloadRequest.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
+
+ // Remove the lint warning below that `downloadManager` might be `null`.
+ assert downloadManager != null;
+
+ // Initiate the download.
+ downloadManager.enqueue(downloadRequest);
+ } else { // The download is not an HTTP or HTTPS URI.
+ Snackbar.make(currentWebView, R.string.cannot_download_file, Snackbar.LENGTH_INDEFINITE).show();
+ }
+ }
+
+ @Override
+ public void onHttpAuthenticationCancel() {
+ // Cancel the `HttpAuthHandler`.
+ httpAuthHandler.cancel();
+ }
+
+ @Override
+ public void onHttpAuthenticationProceed(DialogFragment dialogFragment) {
+ // Get handles for the `EditTexts`.
+ EditText usernameEditText = dialogFragment.getDialog().findViewById(R.id.http_authentication_username);
+ EditText passwordEditText = dialogFragment.getDialog().findViewById(R.id.http_authentication_password);
+
+ // Proceed with the HTTP authentication.
+ httpAuthHandler.proceed(usernameEditText.getText().toString(), passwordEditText.getText().toString());
+ }
+
+ @Override
+ public void onSslErrorCancel() { // TODO. How to handle this with multiple tabs? There could be multiple errors at once.
+ sslErrorHandler.cancel();
+ }
+
+ @Override
+ public void onSslErrorProceed() { // TODO. How to handle this with multiple tabs? There could be multiple errors at once.
+ sslErrorHandler.proceed();
+ }
+
+ @Override
+ public void onPinnedMismatchBack() { // TODO. Move this logic to the dialog.
+ if (currentWebView.canGoBack()) { // There is a back page in the history.
+ // Reset the formatted URL string so the page will load correctly if blocking of third-party requests is enabled.
+ formattedUrlString = ""; // TODO.
+
+ // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
+ navigatingHistory = true; // TODO.
+
+ // Go back.
+ currentWebView.goBack();
+ } else { // There are no pages to go back to.
+ // Load a blank page
+ loadUrl("");
+ }
+ }
+
+ @Override
+ public void onPinnedMismatchProceed() { // TODO. Move this logic to the dialog.
+ // Do not check the pinned information for this domain again until the domain changes.
+ currentWebView.setIgnorePinnedDomainInformation(true);
+ }
+
+ @Override
+ public void onUrlHistoryEntrySelected(int moveBackOrForwardSteps) {
+ // Reset the formatted URL string so the page will load correctly if blocking of third-party requests is enabled.
+ formattedUrlString = "";
+
+ // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
+ navigatingHistory = true;
+
+ // Load the history entry.
+ currentWebView.goBackOrForward(moveBackOrForwardSteps);
+ }
+
+ @Override
+ public void onClearHistory() {
+ // Clear the history.
+ currentWebView.clearHistory();
+ }
+
+ // Override `onBackPressed` to handle the navigation drawer and `mainWebView`.
+ @Override
+ public void onBackPressed() {
+ // Get a handle for the drawer layout.
+ DrawerLayout drawerLayout = findViewById(R.id.drawerlayout);
+
+ if (drawerLayout.isDrawerVisible(GravityCompat.START)) { // The navigation drawer is open.
+ // Close the navigation drawer.
+ drawerLayout.closeDrawer(GravityCompat.START);
+ } else if (drawerLayout.isDrawerVisible(GravityCompat.END)){ // The bookmarks drawer is open.
+ 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();
+ }
+
+ } else if (currentWebView.canGoBack()) { // There is at least one item in the current WebView history.
+ // Reset the formatted URL string so the page will load correctly if blocking of third-party requests is enabled.
+ formattedUrlString = "";
+
+ // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
+ navigatingHistory = true;
+
+ // Go back.
+ currentWebView.goBack();
+ } else { // There isn't anything to do in Privacy Browser.
+ // Pass `onBackPressed()` to the system.
+ super.onBackPressed();
+ }
+ }
+
+ // Process the results of an upload file chooser. Currently there is only one `startActivityForResult` in this activity, so the request code, used to differentiate them, is ignored.
+ @Override
+ public void onActivityResult(int requestCode, int resultCode, Intent data) {
+ // File uploads only work on API >= 21.
+ if (Build.VERSION.SDK_INT >= 21) {
+ // Pass the file to the WebView.
+ fileChooserCallback.onReceiveValue(WebChromeClient.FileChooserParams.parseResult(resultCode, data));
+ }
+ }
+
+ private void loadUrlFromTextBox() {
+ // Get a handle for the URL edit text.
+ EditText urlEditText = findViewById(R.id.url_edittext);
+
+ // Get the text from urlTextBox and convert it to a string. trim() removes white spaces from the beginning and end of the string.
+ String unformattedUrlString = urlEditText.getText().toString().trim();
+
+ // Check to see if `unformattedUrlString` is a valid URL. Otherwise, convert it into a search.
+ if (unformattedUrlString.startsWith("content://")) {
+ // Load the entire content URL.
+ formattedUrlString = unformattedUrlString;
+ } else if (Patterns.WEB_URL.matcher(unformattedUrlString).matches() || unformattedUrlString.startsWith("http://") || unformattedUrlString.startsWith("https://")
+ || unformattedUrlString.startsWith("file://")) {
+ // Add `https://` at the beginning if there is no protocol. Otherwise the app will segfault.
+ if (!unformattedUrlString.startsWith("http") && !unformattedUrlString.startsWith("file://") && !unformattedUrlString.startsWith("content://")) {
+ unformattedUrlString = "https://" + unformattedUrlString;
+ }
+
+ // Initialize `unformattedUrl`.
+ URL unformattedUrl = null;
+
+ // Convert `unformattedUrlString` to a `URL`, then to a `URI`, and then back to a `String`, which sanitizes the input and adds in any missing components.
+ try {
+ unformattedUrl = new URL(unformattedUrlString);
+ } catch (MalformedURLException e) {
+ e.printStackTrace();
+ }
+
+ // The ternary operator (? :) makes sure that a null pointer exception is not thrown, which would happen if `.get` was called on a `null` value.
+ String scheme = unformattedUrl != null ? unformattedUrl.getProtocol() : null;
+ String authority = unformattedUrl != null ? unformattedUrl.getAuthority() : null;
+ String path = unformattedUrl != null ? unformattedUrl.getPath() : null;
+ String query = unformattedUrl != null ? unformattedUrl.getQuery() : null;
+ String fragment = unformattedUrl != null ? unformattedUrl.getRef() : null;
+
+ // Build the URI.
+ Uri.Builder formattedUri = new Uri.Builder();
+ formattedUri.scheme(scheme).authority(authority).path(path).query(query).fragment(fragment);
+
+ // Decode `formattedUri` as a `String` in `UTF-8`.
+ try {
+ formattedUrlString = URLDecoder.decode(formattedUri.build().toString(), "UTF-8");
+ } catch (UnsupportedEncodingException exception) {
+ // Load a blank string.
+ formattedUrlString = "";
+ }
+ } else if (unformattedUrlString.isEmpty()){ // Load a blank web site.
+ // Load a blank string.
+ formattedUrlString = "";
+ } else { // Search for the contents of the URL box.
+ // Create an encoded URL String.
+ String encodedUrlString;
+
+ // Sanitize the search input.
+ try {
+ encodedUrlString = URLEncoder.encode(unformattedUrlString, "UTF-8");
+ } catch (UnsupportedEncodingException exception) {
+ encodedUrlString = "";
+ }