+ 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.getInstance().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.getInstance().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 current domain name so that navigation works if third-party requests are blocked.
+ currentWebView.resetCurrentDomainName();
+
+ // 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 current domain name so that navigation works if third-party requests are blocked.
+ currentWebView.resetCurrentDomainName();
+
+ // 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 and the WebView.
+ @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 current domain name so that navigation works if third-party requests are blocked.
+ currentWebView.resetCurrentDomainName();
+
+ // 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();
+
+ // Initialize the formatted URL string.
+ String url = "";
+
+ // Check to see if `unformattedUrlString` is a valid URL. Otherwise, convert it into a search.
+ if (unformattedUrlString.startsWith("content://")) { // This is a Content URL.
+ // Load the entire content URL.
+ url = unformattedUrlString;
+ } else if (Patterns.WEB_URL.matcher(unformattedUrlString).matches() || unformattedUrlString.startsWith("http://") || unformattedUrlString.startsWith("https://") ||
+ unformattedUrlString.startsWith("file://")) { // This is a standard URL.
+ // 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 uri = new Uri.Builder();
+ uri.scheme(scheme).authority(authority).path(path).query(query).fragment(fragment);
+
+ // Decode the URI as a UTF-8 string in.
+ try {
+ url = URLDecoder.decode(uri.build().toString(), "UTF-8");
+ } catch (UnsupportedEncodingException exception) {
+ // Do nothing. The formatted URL string will remain blank.
+ }
+ } else if (!unformattedUrlString.isEmpty()){ // This is not a URL, but rather a search string.
+ // Create an encoded URL String.
+ String encodedUrlString;
+
+ // Sanitize the search input.
+ try {
+ encodedUrlString = URLEncoder.encode(unformattedUrlString, "UTF-8");
+ } catch (UnsupportedEncodingException exception) {
+ encodedUrlString = "";
+ }
+
+ // Add the base search URL.
+ url = searchURL + encodedUrlString;
+ }
+
+ // Clear the focus from the URL edit text. Otherwise, proximate typing in the box will retain the colorized formatting instead of being reset during refocus.
+ urlEditText.clearFocus();
+
+ // Make it so.
+ loadUrl(url);
+ }
+
+ private void loadUrl(String url) {
+ // Apply the domain settings.
+ applyDomainSettings(currentWebView, url, true, false);
+
+ // Load the URL.
+ currentWebView.loadUrl(url, customHeaders);
+ }
+
+ public void findPreviousOnPage(View view) {
+ // Go to the previous highlighted phrase on the page. `false` goes backwards instead of forwards.
+ currentWebView.findNext(false);
+ }
+
+ public void findNextOnPage(View view) {
+ // Go to the next highlighted phrase on the page. `true` goes forwards instead of backwards.
+ currentWebView.findNext(true);
+ }
+
+ public void closeFindOnPage(View view) {
+ // Get a handle for the views.
+ Toolbar toolbar = findViewById(R.id.toolbar);
+ LinearLayout findOnPageLinearLayout = findViewById(R.id.find_on_page_linearlayout);
+ EditText findOnPageEditText = findViewById(R.id.find_on_page_edittext);
+
+ // Delete the contents of `find_on_page_edittext`.
+ findOnPageEditText.setText(null);
+
+ // Clear the highlighted phrases.
+ currentWebView.clearMatches();
+
+ // Hide the find on page linear layout.
+ findOnPageLinearLayout.setVisibility(View.GONE);
+
+ // Show the toolbar.
+ toolbar.setVisibility(View.VISIBLE);
+
+ // 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;
+
+ // Hide the keyboard.
+ inputMethodManager.hideSoftInputFromWindow(currentWebView.getWindowToken(), 0);
+ }
+
+ private void applyAppSettings() {
+ // Get a handle for the shared preferences.
+ SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+
+ // Store the values from the shared preferences in variables.
+ incognitoModeEnabled = sharedPreferences.getBoolean("incognito_mode", false);
+ boolean doNotTrackEnabled = sharedPreferences.getBoolean("do_not_track", false);
+ proxyThroughOrbot = sharedPreferences.getBoolean("proxy_through_orbot", false);
+ fullScreenBrowsingModeEnabled = sharedPreferences.getBoolean("full_screen_browsing_mode", false);
+ hideAppBar = sharedPreferences.getBoolean("hide_app_bar", true);
+ downloadWithExternalApp = sharedPreferences.getBoolean("download_with_external_app", false);
+
+ // Get handles for the views that need to be modified. `getSupportActionBar()` must be used until the minimum API >= 21.
+ FrameLayout rootFrameLayout = findViewById(R.id.root_framelayout);
+ ActionBar actionBar = getSupportActionBar();
+
+ // Remove the incorrect lint warnings below that the action bar might be null.
+ assert actionBar != null;
+
+ // Apply the proxy through Orbot settings.
+ applyProxyThroughOrbot(false);
+
+ // Set Do Not Track status.
+ if (doNotTrackEnabled) {
+ customHeaders.put("DNT", "1");
+ } else {
+ customHeaders.remove("DNT");
+ }
+
+ // Set the app bar scrolling for each WebView.
+ for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
+ // Get the WebView tab fragment.
+ WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
+
+ // Get the fragment view.
+ View fragmentView = webViewTabFragment.getView();
+
+ // Only modify the WebViews if they exist.
+ if (fragmentView != null) {
+ // Get the nested scroll WebView from the tab fragment.
+ NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
+
+ // Set the app bar scrolling.
+ nestedScrollWebView.setNestedScrollingEnabled(sharedPreferences.getBoolean("scroll_app_bar", true));
+ }
+ }
+
+ // Update the full screen browsing mode settings.
+ if (fullScreenBrowsingModeEnabled && inFullScreenBrowsingMode) { // Privacy Browser is currently in full screen browsing mode.
+ // Update the visibility of the app bar, which might have changed in the settings.
+ if (hideAppBar) {
+ actionBar.hide();
+ } else {
+ actionBar.show();
+ }
+
+ // Hide the banner ad in the free flavor.
+ if (BuildConfig.FLAVOR.contentEquals("free")) {
+ AdHelper.hideAd(findViewById(R.id.adview));
+ }
+
+ // Remove the translucent status flag. This is necessary so the root frame layout can fill the entire screen.
+ getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
+
+ /* 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 { // Privacy Browser is not in full screen browsing mode.
+ // Reset the full screen tracker, which could be true if Privacy Browser was in full screen mode before entering settings and full screen browsing was disabled.
+ inFullScreenBrowsingMode = false;
+
+ // Show the app bar.
+ actionBar.show();