+
+ @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. This removes any text selection markers and context menus, which otherwise draw above the open drawers.
+ urlEditText.clearFocus();
+
+ // Clear the focus from from the WebView if it is not null, which can happen if a user opens a drawer while the browser is being resumed.
+ if (currentWebView != null) {
+ // Clearing the focus from the WebView removes any text selection markers and context menus, which otherwise draw above the open drawers.
+ currentWebView.clearFocus();
+ }
+ }
+ }
+ });
+
+ // 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(getString(R.string.incognito_mode_key), false);
+ sanitizeTrackingQueries = sharedPreferences.getBoolean(getString(R.string.tracking_queries_key), true);
+ sanitizeAmpRedirects = sharedPreferences.getBoolean(getString(R.string.amp_redirects_key), true);
+ proxyMode = sharedPreferences.getString(getString(R.string.proxy_key), getString(R.string.proxy_default_value));
+ fullScreenBrowsingModeEnabled = sharedPreferences.getBoolean(getString(R.string.full_screen_browsing_mode_key), false);
+ hideAppBar = sharedPreferences.getBoolean(getString(R.string.hide_app_bar_key), true);
+ downloadWithExternalApp = sharedPreferences.getBoolean(getString(R.string.download_with_external_app_key), false);
+ scrollAppBar = sharedPreferences.getBoolean(getString(R.string.scroll_app_bar_key), 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(getString(R.string.search_key), getString(R.string.search_default_value));
+
+ // Set the search string.
+ if (searchString.equals(getString(R.string.custom_url_item)))
+ searchURL = sharedPreferences.getString(getString(R.string.search_custom_url_key), getString(R.string.search_custom_url_default_value));
+ else
+ searchURL = searchString;
+
+ // Apply the proxy.
+ applyProxy(false);
+
+ // Adjust the layout and scrolling parameters 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);
+
+ // Show the app bar if it is scrolled off the screen.
+ if (appBarLayout.getTranslationY() != 0) {
+ // Animate the bottom app bar onto the screen.
+ objectAnimator = ObjectAnimator.ofFloat(appBarLayout, "translationY", 0);
+
+ // Make it so.
+ objectAnimator.start();
+ }
+ }
+ } else { // The app bar is on the top.
+ // 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);