+ // The drawer listener is used to update the navigation menu.
+ drawerLayout.addDrawerListener(new DrawerLayout.DrawerListener() {
+ @Override
+ public void onDrawerSlide(@NonNull View drawerView, float slideOffset) {
+ }
+
+ @Override
+ public void onDrawerOpened(@NonNull View drawerView) {
+ }
+
+ @Override
+ public void onDrawerClosed(@NonNull View drawerView) {
+ // Reset the drawer icon when the drawer is closed. Otherwise, it is an arrow if the drawer is open when the app is restarted.
+ actionBarDrawerToggle.syncState();
+ }
+
+ @Override
+ public void onDrawerStateChanged(int newState) {
+ if ((newState == DrawerLayout.STATE_SETTLING) || (newState == DrawerLayout.STATE_DRAGGING)) { // A drawer is opening or closing.
+ // Update the navigation menu items if the WebView is not null.
+ if (currentWebView != null) {
+ navigationBackMenuItem.setEnabled(currentWebView.canGoBack());
+ navigationForwardMenuItem.setEnabled(currentWebView.canGoForward());
+ navigationHistoryMenuItem.setEnabled((currentWebView.canGoBack() || currentWebView.canGoForward()));
+ navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + currentWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+
+ // Hide the keyboard (if displayed).
+ inputMethodManager.hideSoftInputFromWindow(currentWebView.getWindowToken(), 0);
+ }
+
+ // Clear the focus from from the URL text box and the WebView. This removes any text selection markers and context menus, which otherwise draw above the open drawers.
+ urlEditText.clearFocus();
+ currentWebView.clearFocus();
+ }
+ }
+ });
+
+ // Replace the header that `WebView` creates for `X-Requested-With` with a null value. The default value is the application ID (com.stoutner.privacybrowser.standard).
+ customHeaders.put("X-Requested-With", "");
+
+ // Inflate a bare WebView to get the default user agent. It is not used to render content on the screen.
+ @SuppressLint("InflateParams") View webViewLayout = getLayoutInflater().inflate(R.layout.bare_webview, null, false);
+
+ // Get a handle for the WebView.
+ WebView bareWebView = webViewLayout.findViewById(R.id.bare_webview);
+
+ // Store the default user agent.
+ webViewDefaultUserAgent = bareWebView.getSettings().getUserAgentString();
+
+ // Destroy the bare WebView.
+ bareWebView.destroy();
+ }
+
+ 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);
+ sanitizeGoogleAnalytics = sharedPreferences.getBoolean("google_analytics", true);
+ sanitizeFacebookClickIds = sharedPreferences.getBoolean("facebook_click_ids", true);
+ sanitizeTwitterAmpRedirects = sharedPreferences.getBoolean("twitter_amp_redirects", true);
+ proxyMode = sharedPreferences.getString("proxy", getString(R.string.proxy_default_value));
+ fullScreenBrowsingModeEnabled = sharedPreferences.getBoolean("full_screen_browsing_mode", false);
+ hideAppBar = sharedPreferences.getBoolean("hide_app_bar", true);
+ scrollAppBar = sharedPreferences.getBoolean("scroll_app_bar", true);
+
+ // Apply the saved proxy mode if the app has been restarted.
+ if (savedProxyMode != null) {
+ // Apply the saved proxy mode.
+ proxyMode = savedProxyMode;
+
+ // Reset the saved proxy mode.
+ savedProxyMode = null;
+ }
+
+ // Get the search string.
+ String searchString = sharedPreferences.getString("search", getString(R.string.search_default_value));
+
+ // Set the search string.
+ if (searchString.equals("Custom URL")) { // A custom search string is used.
+ searchURL = sharedPreferences.getString("search_custom_url", getString(R.string.search_custom_url_default_value));
+ } else { // A custom search string is not used.
+ searchURL = searchString;
+ }
+
+ // Apply the proxy.
+ applyProxy(false);
+
+ // Set Do Not Track status.
+ if (doNotTrackEnabled) {
+ customHeaders.put("DNT", "1");
+ } else {
+ customHeaders.remove("DNT");
+ }
+
+ // Get the current layout parameters. Using coordinator layout parameters allows the `setBehavior()` command and using app bar layout parameters allows the `setScrollFlags()` command.
+ CoordinatorLayout.LayoutParams swipeRefreshLayoutParams = (CoordinatorLayout.LayoutParams) swipeRefreshLayout.getLayoutParams();
+ AppBarLayout.LayoutParams toolbarLayoutParams = (AppBarLayout.LayoutParams) toolbar.getLayoutParams();
+ AppBarLayout.LayoutParams findOnPageLayoutParams = (AppBarLayout.LayoutParams) findOnPageLinearLayout.getLayoutParams();
+ AppBarLayout.LayoutParams tabsLayoutParams = (AppBarLayout.LayoutParams) tabsLinearLayout.getLayoutParams();
+
+ // Add the scrolling behavior to the layout parameters.
+ if (scrollAppBar) {
+ // Enable scrolling of the app bar.
+ swipeRefreshLayoutParams.setBehavior(new AppBarLayout.ScrollingViewBehavior());
+ toolbarLayoutParams.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS | AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
+ findOnPageLayoutParams.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS | AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
+ tabsLayoutParams.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS | AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
+ } else {
+ // Disable scrolling of the app bar.
+ swipeRefreshLayoutParams.setBehavior(null);
+ toolbarLayoutParams.setScrollFlags(0);
+ findOnPageLayoutParams.setScrollFlags(0);
+ tabsLayoutParams.setScrollFlags(0);
+
+ // Expand the app bar if it is currently collapsed.
+ appBarLayout.setExpanded(true);
+ }
+
+ // Apply the modified layout parameters.
+ swipeRefreshLayout.setLayoutParams(swipeRefreshLayoutParams);
+ toolbar.setLayoutParams(toolbarLayoutParams);
+ findOnPageLinearLayout.setLayoutParams(findOnPageLayoutParams);
+ tabsLinearLayout.setLayoutParams(tabsLayoutParams);
+
+ // 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);