2 * Copyright 2015-2016 Soren Stoutner <soren@stoutner.com>.
4 * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
6 * Privacy Browser is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * Privacy Browser is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Privacy Browser. If not, see <http://www.gnu.org/licenses/>.
20 package com.stoutner.privacybrowser;
22 import android.annotation.SuppressLint;
23 import android.app.Activity;
24 import android.app.DialogFragment;
25 import android.app.DownloadManager;
26 import android.content.Intent;
27 import android.content.SharedPreferences;
28 import android.content.res.Configuration;
29 import android.graphics.Bitmap;
30 import android.graphics.drawable.BitmapDrawable;
31 import android.graphics.drawable.Drawable;
32 import android.net.Uri;
33 import android.net.http.SslError;
34 import android.os.Build;
35 import android.os.Bundle;
36 import android.preference.PreferenceManager;
37 import android.support.design.widget.NavigationView;
38 import android.support.design.widget.Snackbar;
39 import android.support.v4.app.ActivityCompat;
40 import android.support.v4.content.ContextCompat;
41 import android.support.v4.view.GravityCompat;
42 import android.support.v4.widget.DrawerLayout;
43 import android.support.v4.widget.SwipeRefreshLayout;
44 import android.support.v7.app.ActionBar;
45 import android.support.v7.app.ActionBarDrawerToggle;
46 import android.support.v7.app.AppCompatActivity;
47 import android.support.v7.widget.Toolbar;
48 import android.util.Patterns;
49 import android.view.KeyEvent;
50 import android.view.Menu;
51 import android.view.MenuItem;
52 import android.view.View;
53 import android.view.inputmethod.InputMethodManager;
54 import android.webkit.CookieManager;
55 import android.webkit.DownloadListener;
56 import android.webkit.SslErrorHandler;
57 import android.webkit.WebChromeClient;
58 import android.webkit.WebStorage;
59 import android.webkit.WebView;
60 import android.webkit.WebViewClient;
61 import android.webkit.WebViewDatabase;
62 import android.widget.EditText;
63 import android.widget.FrameLayout;
64 import android.widget.ImageView;
65 import android.widget.ProgressBar;
67 import java.io.UnsupportedEncodingException;
68 import java.net.MalformedURLException;
70 import java.net.URLEncoder;
71 import java.util.HashMap;
74 // We need to use AppCompatActivity from android.support.v7.app.AppCompatActivity to have access to the SupportActionBar until the minimum API is >= 21.
75 public class MainWebViewActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener, CreateHomeScreenShortcut.CreateHomeScreenSchortcutListener, SslCertificateError.SslCertificateErrorListener {
76 // `favoriteIcon` is public static so it can be accessed from `CreateHomeScreenShortcut`, `BookmarksActivity`, `CreateBookmark`, `CreateBookmarkFolder`, and `EditBookmark`.
77 // It is also used in `onCreate()` and `onCreateHomeScreenShortcutCreate()`.
78 public static Bitmap favoriteIcon;
80 // `privacyBrowserActivity` is public static so it can be accessed from `SettingsFragment`.
81 // It is also used in `onCreate()`, `onCreateOptionsMenu()`, and `onOptionsItemSelected()`,
82 public static Activity privacyBrowserActivity;
84 // `mainWebView` is public static so it can be accessed from `SettingsFragment`.
85 // It is also used in `onCreate()`, `onOptionsItemSelected()`, `onNavigationItemSelected()`, and `loadUrlFromTextBox()`.
86 public static WebView mainWebView;
88 // `formattedUrlString` is public static so it can be accessed from `BookmarksActivity`.
89 // It is also used in `onCreate()`, `onOptionsItemSelected()`, `onCreateHomeScreenShortcutCreate()`, and `loadUrlFromTextBox()`.
90 public static String formattedUrlString;
92 // `mainMenu` is public static so it can be accessed from `SettingsFragment`. It is also used in `onCreateOptionsMenu()` and `onOptionsItemSelected()`.
93 public static Menu mainMenu;
95 // `cookieManager` is public static so it can be accessed from `SettingsFragment`. It is also used in `onCreate()`, `onOptionsItemSelected()`, and `onNavigationItemSelected()`.
96 public static CookieManager cookieManager;
98 // `javaScriptEnabled` is public static so it can be accessed from `SettingsFragment`.
99 // It is also used in `onCreate()`, `onCreateOptionsMenu()`, `onOptionsItemSelected()`, and `loadUrlFromTextBox()`.
100 public static boolean javaScriptEnabled;
102 // `firstPartyCookiesEnabled` is public static so it can be accessed from `SettingsFragment`.
103 // It is also used in `onCreate()`, `onCreateOptionsMenu()`, `onPrepareOptionsMenu()`, and `onOptionsItemSelected()`.
104 public static boolean firstPartyCookiesEnabled;
106 // `thirdPartyCookiesEnables` is public static so it can be accessed from `SettingsFragment`.
107 // It is also used in `onCreate()`, `onCreateOptionsMenu()`, `onPrepareOptionsMenu()`, and `onOptionsItemSelected()`.
108 public static boolean thirdPartyCookiesEnabled;
110 // `domStorageEnabled` is public static so it can be accessed from `SettingsFragment`. It is also used in `onCreate()`, `onCreateOptionsMenu()`, and `onOptionsItemSelected()`.
111 public static boolean domStorageEnabled;
113 // `saveFormDataEnabled` is public static so it can be accessed from `SettingsFragment`. It is also used in `onCreate()`, `onCreateOptionsMenu()`, and `onOptionsItemSelected()`.
114 public static boolean saveFormDataEnabled;
116 // `javaScriptDisabledSearchURL` is public static so it can be accessed from `SettingsFragment`. It is also used in `onCreate()` and `loadURLFromTextBox()`.
117 public static String javaScriptDisabledSearchURL;
119 // `javaScriptEnabledSearchURL` is public static so it can be accessed from `SettingsFragment`. It is also used in `onCreate()` and `loadURLFromTextBox()`.
120 public static String javaScriptEnabledSearchURL;
122 // `homepage` is public static so it can be accessed from `SettingsFragment`. It is also used in `onCreate()` and `onOptionsItemSelected()`.
123 public static String homepage;
125 // `swipeToRefresh` is public static so it can be accessed from SettingsFragment. It is also used in onCreate().
126 public static SwipeRefreshLayout swipeToRefresh;
128 // `swipeToRefreshEnabled` is public static so it can be accessed from `SettingsFragment`. It is also used in `onCreate()`.
129 public static boolean swipeToRefreshEnabled;
131 // `customHeader` is public static so it can be accessed from `BookmarksActivity`. It is also used in `onCreate()`, `onOptionsItemSelected()`, and `loadUrlFromTextBox()`.
132 public static Map<String, String> customHeaders = new HashMap<String, String>();
136 // `drawerToggle` is used in `onCreate()`, `onPostCreate()`, `onConfigurationChanged()`, `onNewIntent()`, and `onNavigationItemSelected()`.
137 private ActionBarDrawerToggle drawerToggle;
139 // `drawerLayout` is used in `onCreate()`, `onNewIntent()`, and `onBackPressed()`.
140 private DrawerLayout drawerLayout;
142 // `urlTextBox` is used in `onCreate()`, `onOptionsItemSelected()`, and `loadUrlFromTextBox()`.
143 private EditText urlTextBox;
145 // `adView` is used in `onCreate()` and `onConfigurationChanged()`.
148 // `sslErrorHandler` is used in `onCreate()`, `onSslErrorCancel()`, and `onSslErrorProceed`.
149 private SslErrorHandler sslErrorHandler;
151 // `sharedPreferences` is used in `onCreate()` and `onCreateOptionsMenu()`.
152 SharedPreferences sharedPreferences;
155 // Remove Android Studio's warning about the dangers of using SetJavaScriptEnabled. The whole premise of Privacy Browser is built around an understanding of these dangers.
156 @SuppressLint("SetJavaScriptEnabled")
157 protected void onCreate(Bundle savedInstanceState) {
158 super.onCreate(savedInstanceState);
159 setContentView(R.layout.main_coordinatorlayout);
161 // We need a handle for the activity, which is accessed from `SettingsFragment` and fed into `updatePrivacyIcons()`.
162 privacyBrowserActivity = this;
164 // We need to use the SupportActionBar from android.support.v7.app.ActionBar until the minimum API is >= 21.
165 Toolbar supportAppBar = (Toolbar) findViewById(R.id.appBar);
166 setSupportActionBar(supportAppBar);
167 final ActionBar appBar = getSupportActionBar();
169 // This is needed to get rid of the Android Studio warning that appBar might be null.
170 assert appBar != null;
172 // Add the custom url_bar layout, which shows the favoriteIcon, urlTextBar, and progressBar.
173 appBar.setCustomView(R.layout.url_bar);
174 appBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
176 // Set the "go" button on the keyboard to load the URL in urlTextBox.
177 urlTextBox = (EditText) appBar.getCustomView().findViewById(R.id.urlTextBox);
178 urlTextBox.setOnKeyListener(new View.OnKeyListener() {
179 public boolean onKey(View v, int keyCode, KeyEvent event) {
180 // If the event is a key-down event on the "enter" button, load the URL.
181 if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER)) {
182 // Load the URL into the mainWebView and consume the event.
184 loadUrlFromTextBox();
185 } catch (UnsupportedEncodingException e) {
188 // If the enter key was pressed, consume the event.
191 // If any other key was pressed, do not consume the event.
197 final FrameLayout fullScreenVideoFrameLayout = (FrameLayout) findViewById(R.id.fullScreenVideoFrameLayout);
199 // Implement swipe to refresh
200 swipeToRefresh = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);
201 assert swipeToRefresh != null; //This assert removes the incorrect warning on the following line that swipeToRefresh might be null.
202 swipeToRefresh.setColorSchemeResources(R.color.blue);
203 swipeToRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
205 public void onRefresh() {
206 mainWebView.reload();
210 mainWebView = (WebView) findViewById(R.id.mainWebView);
212 // Create the navigation drawer.
213 drawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
214 // The DrawerTitle identifies the drawer in accessibility mode.
215 drawerLayout.setDrawerTitle(GravityCompat.START, getString(R.string.navigation_drawer));
217 // Listen for touches on the navigation menu.
218 final NavigationView navigationView = (NavigationView) findViewById(R.id.navigationView);
219 assert navigationView != null; // This assert removes the incorrect warning on the following line that navigationView might be null.
220 navigationView.setNavigationItemSelectedListener(this);
222 // drawerToggle creates the hamburger icon at the start of the AppBar.
223 drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, supportAppBar, R.string.open_navigation, R.string.close_navigation);
225 mainWebView.setWebViewClient(new WebViewClient() {
226 // shouldOverrideUrlLoading makes this `WebView` the default handler for URLs inside the app, so that links are not kicked out to other apps.
228 public boolean shouldOverrideUrlLoading(WebView view, String url) {
229 // Use an external email program if the link begins with "mailto:".
230 if (url.startsWith("mailto:")) {
231 // We use `ACTION_SENDTO` instead of `ACTION_SEND` so that only email programs are launched.
232 Intent emailIntent = new Intent(Intent.ACTION_SENDTO);
234 // Parse the url and set it as the data for the `Intent`.
235 emailIntent.setData(Uri.parse(url));
237 // `FLAG_ACTIVITY_NEW_TASK` opens the email program in a new task instead as part of Privacy Browser.
238 emailIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
241 startActivity(emailIntent);
243 } else { // Load the URL in Privacy Browser.
244 mainWebView.loadUrl(url, customHeaders);
249 // Update the URL in urlTextBox when the page starts to load.
251 public void onPageStarted(WebView view, String url, Bitmap favicon) {
252 urlTextBox.setText(url);
255 // Update formattedUrlString and urlTextBox. It is necessary to do this after the page finishes loading because the final URL can change during load.
257 public void onPageFinished(WebView view, String url) {
258 formattedUrlString = url;
260 // Only update urlTextBox if the user is not typing in it.
261 if (!urlTextBox.hasFocus()) {
262 urlTextBox.setText(formattedUrlString);
266 // Handle SSL Certificate errors.
268 public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
269 // Store `handler` so it can be accesses from `onSslErrorCancel()` and `onSslErrorProceed()`.
270 sslErrorHandler = handler;
272 // Display the SSL error `AlertDialog`.
273 DialogFragment sslCertificateErrorDialogFragment = SslCertificateError.displayDialog(error);
274 sslCertificateErrorDialogFragment.show(getFragmentManager(), getResources().getString(R.string.ssl_certificate_error));
278 mainWebView.setWebChromeClient(new WebChromeClient() {
279 // Update the progress bar when a page is loading.
281 public void onProgressChanged(WebView view, int progress) {
282 ProgressBar progressBar = (ProgressBar) appBar.getCustomView().findViewById(R.id.progressBar);
283 progressBar.setProgress(progress);
284 if (progress < 100) {
285 progressBar.setVisibility(View.VISIBLE);
287 progressBar.setVisibility(View.GONE);
289 //Stop the SwipeToRefresh indicator if it is running
290 swipeToRefresh.setRefreshing(false);
294 // Set the favorite icon when it changes.
296 public void onReceivedIcon(WebView view, Bitmap icon) {
297 // Save a copy of the favorite icon for use if a shortcut is added to the home screen.
300 // Place the favorite icon in the appBar.
301 ImageView imageViewFavoriteIcon = (ImageView) appBar.getCustomView().findViewById(R.id.favoriteIcon);
302 imageViewFavoriteIcon.setImageBitmap(Bitmap.createScaledBitmap(icon, 64, 64, true));
305 // Enter full screen video
307 public void onShowCustomView(View view, CustomViewCallback callback) {
310 // Show the fullScreenVideoFrameLayout.
311 assert fullScreenVideoFrameLayout != null; //This assert removes the incorrect warning on the following line that fullScreenVideoFrameLayout might be null.
312 fullScreenVideoFrameLayout.addView(view);
313 fullScreenVideoFrameLayout.setVisibility(View.VISIBLE);
315 // Hide the mainWebView.
316 mainWebView.setVisibility(View.GONE);
318 // Hide the ad if this is the free flavor.
319 BannerAd.hideAd(adView);
321 /* SYSTEM_UI_FLAG_HIDE_NAVIGATION hides the navigation bars on the bottom or right of the screen.
322 * SYSTEM_UI_FLAG_FULLSCREEN hides the status bar across the top of the screen.
323 * SYSTEM_UI_FLAG_IMMERSIVE_STICKY makes the navigation and status bars ghosted overlays and automatically rehides them.
325 view.setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
328 // Exit full screen video
329 public void onHideCustomView() {
332 // Show the mainWebView.
333 mainWebView.setVisibility(View.VISIBLE);
335 // Show the ad if this is the free flavor.
336 BannerAd.showAd(adView);
338 // Hide the fullScreenVideoFrameLayout.
339 assert fullScreenVideoFrameLayout != null; //This assert removes the incorrect warning on the following line that fullScreenVideoFrameLayout might be null.
340 fullScreenVideoFrameLayout.removeAllViews();
341 fullScreenVideoFrameLayout.setVisibility(View.GONE);
345 // Allow the downloading of files.
346 mainWebView.setDownloadListener(new DownloadListener() {
347 // Launch the Android download manager when a link leads to a download.
349 public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
350 DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
351 DownloadManager.Request requestUri = new DownloadManager.Request(Uri.parse(url));
353 // Add the URL as the description for the download.
354 requestUri.setDescription(url);
356 // Show the download notification after the download is completed.
357 requestUri.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
359 // Initiate the download and display a Snackbar.
360 downloadManager.enqueue(requestUri);
361 Snackbar.make(findViewById(R.id.mainWebView), R.string.download_started, Snackbar.LENGTH_SHORT).show();
365 // Allow pinch to zoom.
366 mainWebView.getSettings().setBuiltInZoomControls(true);
368 // Hide zoom controls.
369 mainWebView.getSettings().setDisplayZoomControls(false);
372 // Initialize the default preference values the first time the program is run.
373 PreferenceManager.setDefaultValues(this, R.xml.preferences, false);
375 // Get the shared preference values.
376 sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
378 // Set JavaScript initial status. The default value is false.
379 javaScriptEnabled = sharedPreferences.getBoolean("javascript_enabled", false);
380 mainWebView.getSettings().setJavaScriptEnabled(javaScriptEnabled);
382 // Initialize cookieManager.
383 cookieManager = CookieManager.getInstance();
385 // Set cookies initial status. The default value is false.
386 firstPartyCookiesEnabled = sharedPreferences.getBoolean("first_party_cookies_enabled", false);
387 cookieManager.setAcceptCookie(firstPartyCookiesEnabled);
389 // Set third-party cookies initial status if API >= 21. The default value is false.
390 if (Build.VERSION.SDK_INT >= 21) {
391 thirdPartyCookiesEnabled = sharedPreferences.getBoolean("third_party_cookies_enabled", false);
392 cookieManager.setAcceptThirdPartyCookies(mainWebView, thirdPartyCookiesEnabled);
395 // Set DOM storage initial status. The default value is false.
396 domStorageEnabled = sharedPreferences.getBoolean("dom_storage_enabled", false);
397 mainWebView.getSettings().setDomStorageEnabled(domStorageEnabled);
399 // Set the saved form data initial status. The default is false.
400 saveFormDataEnabled = sharedPreferences.getBoolean("save_form_data_enabled", false);
401 mainWebView.getSettings().setSaveFormData(saveFormDataEnabled);
403 // Set the user agent initial status.
404 String userAgentString = sharedPreferences.getString("user_agent", "Default user agent");
405 switch (userAgentString) {
406 case "Default user agent":
410 case "Custom user agent":
411 // Set the custom user agent on mainWebView, The default is "PrivacyBrowser/1.0".
412 mainWebView.getSettings().setUserAgentString(sharedPreferences.getString("custom_user_agent", "PrivacyBrowser/1.0"));
416 // Set the selected user agent on mainWebView. The default is "PrivacyBrowser/1.0".
417 mainWebView.getSettings().setUserAgentString(sharedPreferences.getString("user_agent", "PrivacyBrowser/1.0"));
421 // Set the initial string for JavaScript disabled search.
422 if (sharedPreferences.getString("javascript_disabled_search", "https://duckduckgo.com/html/?q=").equals("Custom URL")) {
423 // Get the custom URL string. The default is "".
424 javaScriptDisabledSearchURL = sharedPreferences.getString("javascript_disabled_search_custom_url", "");
426 // Use the string from javascript_disabled_search.
427 javaScriptDisabledSearchURL = sharedPreferences.getString("javascript_disabled_search", "https://duckduckgo.com/html/?q=");
430 // Set the initial string for JavaScript enabled search.
431 if (sharedPreferences.getString("javascript_enabled_search", "https://duckduckgo.com/?q=").equals("Custom URL")) {
432 // Get the custom URL string. The default is "".
433 javaScriptEnabledSearchURL = sharedPreferences.getString("javascript_enabled_search_custom_url", "");
435 // Use the string from javascript_enabled_search.
436 javaScriptEnabledSearchURL = sharedPreferences.getString("javascript_enabled_search", "https://duckduckgo.com/?q=");
440 // Set the homepage initial status. The default value is `https://www.duckduckgo.com`.
441 homepage = sharedPreferences.getString("homepage", "https://www.duckduckgo.com");
443 // Set the font size initial status. the default value is `100`.
444 String defaultFontSizeString = sharedPreferences.getString("default_font_size", "100");
445 mainWebView.getSettings().setTextZoom(Integer.valueOf(defaultFontSizeString));
447 // Set the swipe to refresh initial status. The default is `true`.
448 swipeToRefreshEnabled = sharedPreferences.getBoolean("swipe_to_refresh_enabled", true);
449 swipeToRefresh.setEnabled(swipeToRefreshEnabled);
452 // 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).
453 customHeaders.put("X-Requested-With", "");
455 // Set Do Not Track. The default is true.
456 if (sharedPreferences.getBoolean("do_not_track", true)) {
457 customHeaders.put("DNT", "1");
461 // Get the intent information that started the app.
462 final Intent intent = getIntent();
464 if (intent.getData() != null) {
465 // Get the intent data and convert it to a string.
466 final Uri intentUriData = intent.getData();
467 formattedUrlString = intentUriData.toString();
470 // If formattedUrlString is null assign the homepage to it.
471 if (formattedUrlString == null) {
472 formattedUrlString = homepage;
475 // Load the initial website.
476 mainWebView.loadUrl(formattedUrlString, customHeaders);
478 // If the favorite icon is null, load the default.
479 if (favoriteIcon == null) {
480 // We have to use `ContextCompat` until API >= 21.
481 Drawable favoriteIconDrawable = ContextCompat.getDrawable(getApplicationContext(), R.drawable.world);
482 BitmapDrawable favoriteIconBitmapDrawable = (BitmapDrawable) favoriteIconDrawable;
483 favoriteIcon = favoriteIconBitmapDrawable.getBitmap();
486 // Initialize AdView for the free flavor and request an ad. If this is not the free flavor BannerAd.requestAd() does nothing.
487 adView = findViewById(R.id.adView);
488 BannerAd.requestAd(adView);
493 protected void onNewIntent(Intent intent) {
494 // Sets the new intent as the activity intent, so that any future `getIntent()`s pick up this one instead of creating a new activity.
497 if (intent.getData() != null) {
498 // Get the intent data and convert it to a string.
499 final Uri intentUriData = intent.getData();
500 formattedUrlString = intentUriData.toString();
503 // Close the navigation drawer if it is open.
504 if (drawerLayout.isDrawerVisible(GravityCompat.START)) {
505 drawerLayout.closeDrawer(GravityCompat.START);
509 mainWebView.loadUrl(formattedUrlString, customHeaders);
511 // Clear the keyboard if displayed and remove the focus on the urlTextBar if it has it.
512 mainWebView.requestFocus();
516 public boolean onCreateOptionsMenu(Menu menu) {
517 // Inflate the menu; this adds items to the action bar if it is present.
518 getMenuInflater().inflate(R.menu.webview_options_menu, menu);
520 // Set mainMenu so it can be used by onOptionsItemSelected.
523 // Set the initial status of the privacy icon.
524 updatePrivacyIcons(privacyBrowserActivity);
526 // Get handles for the menu items.
527 MenuItem toggleFirstPartyCookies = menu.findItem(R.id.toggleFirstPartyCookies);
528 MenuItem toggleThirdPartyCookies = menu.findItem(R.id.toggleThirdPartyCookies);
529 MenuItem toggleDomStorage = menu.findItem(R.id.toggleDomStorage);
530 MenuItem toggleSaveFormData = menu.findItem(R.id.toggleSaveFormData);
532 // Set the initial status of the menu item checkboxes.
533 toggleFirstPartyCookies.setChecked(firstPartyCookiesEnabled);
534 toggleThirdPartyCookies.setChecked(thirdPartyCookiesEnabled);
535 toggleDomStorage.setChecked(domStorageEnabled);
536 toggleSaveFormData.setChecked(saveFormDataEnabled);
538 // Set the status of the additional app bar icons. The default is `false`.
539 if (sharedPreferences.getBoolean("display_additional_app_bar_icons", false)) {
540 toggleFirstPartyCookies.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
541 toggleThirdPartyCookies.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
542 toggleDomStorage.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
543 toggleSaveFormData.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
544 } else { //Do not display the additional icons.
545 toggleFirstPartyCookies.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
546 toggleThirdPartyCookies.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
547 toggleDomStorage.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
548 toggleSaveFormData.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
555 public boolean onPrepareOptionsMenu(Menu menu) {
556 // Only enable Third-Party Cookies if SDK >= 21 and First-Party Cookies are enabled.
557 MenuItem toggleThirdPartyCookies = menu.findItem(R.id.toggleThirdPartyCookies);
558 if ((Build.VERSION.SDK_INT >= 21) && firstPartyCookiesEnabled) {
559 toggleThirdPartyCookies.setEnabled(true);
561 toggleThirdPartyCookies.setEnabled(false);
564 // Enable DOM Storage if JavaScript is enabled.
565 MenuItem toggleDomStorage = menu.findItem(R.id.toggleDomStorage);
566 toggleDomStorage.setEnabled(javaScriptEnabled);
568 // Enable Clear Cookies if there are any.
569 MenuItem clearCookies = menu.findItem(R.id.clearCookies);
570 clearCookies.setEnabled(cookieManager.hasCookies());
572 // Enable Clear Form Data is there is any.
573 MenuItem clearFormData = menu.findItem(R.id.clearFormData);
574 WebViewDatabase mainWebViewDatabase = WebViewDatabase.getInstance(this);
575 clearFormData.setEnabled(mainWebViewDatabase.hasFormData());
577 // Initialize font size variables.
578 int fontSize = mainWebView.getSettings().getTextZoom();
579 String fontSizeTitle;
580 MenuItem selectedFontSizeMenuItem;
582 // Prepare the font size title and current size menu item.
585 fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.fifty_percent);
586 selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeFiftyPercent);
590 fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.seventy_five_percent);
591 selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeSeventyFivePercent);
595 fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.one_hundred_percent);
596 selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeOneHundredPercent);
600 fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.one_hundred_twenty_five_percent);
601 selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeOneHundredTwentyFivePercent);
605 fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.one_hundred_fifty_percent);
606 selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeOneHundredFiftyPercent);
610 fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.one_hundred_seventy_five_percent);
611 selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeOneHundredSeventyFivePercent);
615 fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.two_hundred_percent);
616 selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeTwoHundredPercent);
620 fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.one_hundred_percent);
621 selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeOneHundredPercent);
625 // Set the font size title and select the current size menu item.
626 MenuItem fontSizeMenuItem = menu.findItem(R.id.fontSize);
627 fontSizeMenuItem.setTitle(fontSizeTitle);
628 selectedFontSizeMenuItem.setChecked(true);
630 // Only show `Refresh` if `swipeToRefresh` is disabled.
631 MenuItem refreshMenuItem = menu.findItem(R.id.refresh);
632 refreshMenuItem.setVisible(!swipeToRefreshEnabled);
634 // Run all the other default commands.
635 super.onPrepareOptionsMenu(menu);
637 // `return true` displays the menu.
642 // Remove Android Studio's warning about the dangers of using SetJavaScriptEnabled.
643 @SuppressLint("SetJavaScriptEnabled")
644 // removeAllCookies is deprecated, but it is required for API < 21.
645 @SuppressWarnings("deprecation")
646 public boolean onOptionsItemSelected(MenuItem menuItem) {
647 int menuItemId = menuItem.getItemId();
649 // Set the commands that relate to the menu entries.
650 switch (menuItemId) {
651 case R.id.toggleJavaScript:
652 // Switch the status of javaScriptEnabled.
653 javaScriptEnabled = !javaScriptEnabled;
655 // Apply the new JavaScript status.
656 mainWebView.getSettings().setJavaScriptEnabled(javaScriptEnabled);
658 // Update the privacy icon.
659 updatePrivacyIcons(privacyBrowserActivity);
661 // Display a `Snackbar`.
662 if (javaScriptEnabled) {
663 Snackbar.make(findViewById(R.id.mainWebView), R.string.javascript_enabled, Snackbar.LENGTH_SHORT).show();
665 if (firstPartyCookiesEnabled) {
666 Snackbar.make(findViewById(R.id.mainWebView), R.string.javascript_disabled, Snackbar.LENGTH_SHORT).show();
668 Snackbar.make(findViewById(R.id.mainWebView), R.string.privacy_mode, Snackbar.LENGTH_SHORT).show();
672 // Reload the WebView.
673 mainWebView.reload();
676 case R.id.toggleFirstPartyCookies:
677 // Switch the status of firstPartyCookiesEnabled.
678 firstPartyCookiesEnabled = !firstPartyCookiesEnabled;
680 // Update the menu checkbox.
681 menuItem.setChecked(firstPartyCookiesEnabled);
683 // Apply the new cookie status.
684 cookieManager.setAcceptCookie(firstPartyCookiesEnabled);
686 // Update the privacy icon.
687 updatePrivacyIcons(privacyBrowserActivity);
689 // Display a `Snackbar`.
690 if (firstPartyCookiesEnabled) {
691 Snackbar.make(findViewById(R.id.mainWebView), R.string.first_party_cookies_enabled, Snackbar.LENGTH_SHORT).show();
693 if (javaScriptEnabled) {
694 Snackbar.make(findViewById(R.id.mainWebView), R.string.first_party_cookies_disabled, Snackbar.LENGTH_SHORT).show();
696 Snackbar.make(findViewById(R.id.mainWebView), R.string.privacy_mode, Snackbar.LENGTH_SHORT).show();
700 // Reload the WebView.
701 mainWebView.reload();
704 case R.id.toggleThirdPartyCookies:
705 if (Build.VERSION.SDK_INT >= 21) {
706 // Switch the status of thirdPartyCookiesEnabled.
707 thirdPartyCookiesEnabled = !thirdPartyCookiesEnabled;
709 // Update the menu checkbox.
710 menuItem.setChecked(thirdPartyCookiesEnabled);
712 // Apply the new cookie status.
713 cookieManager.setAcceptThirdPartyCookies(mainWebView, thirdPartyCookiesEnabled);
715 // Display a `Snackbar`.
716 if (thirdPartyCookiesEnabled) {
717 Snackbar.make(findViewById(R.id.mainWebView), R.string.third_party_cookies_enabled, Snackbar.LENGTH_SHORT).show();
719 Snackbar.make(findViewById(R.id.mainWebView), R.string.third_party_cookies_disabled, Snackbar.LENGTH_SHORT).show();
722 // Reload the WebView.
723 mainWebView.reload();
724 } // Else do nothing because SDK < 21.
727 case R.id.toggleDomStorage:
728 // Switch the status of domStorageEnabled.
729 domStorageEnabled = !domStorageEnabled;
731 // Update the menu checkbox.
732 menuItem.setChecked(domStorageEnabled);
734 // Apply the new DOM Storage status.
735 mainWebView.getSettings().setDomStorageEnabled(domStorageEnabled);
737 // Display a `Snackbar`.
738 if (domStorageEnabled) {
739 Snackbar.make(findViewById(R.id.mainWebView), R.string.dom_storage_enabled, Snackbar.LENGTH_SHORT).show();
741 Snackbar.make(findViewById(R.id.mainWebView), R.string.dom_storage_disabled, Snackbar.LENGTH_SHORT).show();
744 // Reload the WebView.
745 mainWebView.reload();
748 case R.id.toggleSaveFormData:
749 // Switch the status of saveFormDataEnabled.
750 saveFormDataEnabled = !saveFormDataEnabled;
752 // Update the menu checkbox.
753 menuItem.setChecked(saveFormDataEnabled);
755 // Apply the new form data status.
756 mainWebView.getSettings().setSaveFormData(saveFormDataEnabled);
758 // Display a `Snackbar`.
759 if (saveFormDataEnabled) {
760 Snackbar.make(findViewById(R.id.mainWebView), R.string.form_data_enabled, Snackbar.LENGTH_SHORT).show();
762 Snackbar.make(findViewById(R.id.mainWebView), R.string.form_data_disabled, Snackbar.LENGTH_SHORT).show();
765 // Reload the WebView.
766 mainWebView.reload();
769 case R.id.clearCookies:
770 if (Build.VERSION.SDK_INT < 21) {
771 cookieManager.removeAllCookie();
773 cookieManager.removeAllCookies(null);
775 Snackbar.make(findViewById(R.id.mainWebView), R.string.cookies_deleted, Snackbar.LENGTH_SHORT).show();
778 case R.id.clearDomStorage:
779 WebStorage webStorage = WebStorage.getInstance();
780 webStorage.deleteAllData();
781 Snackbar.make(findViewById(R.id.mainWebView), R.string.dom_storage_deleted, Snackbar.LENGTH_SHORT).show();
784 case R.id.clearFormData:
785 WebViewDatabase mainWebViewDatabase = WebViewDatabase.getInstance(this);
786 mainWebViewDatabase.clearFormData();
787 mainWebView.reload();
790 case R.id.fontSizeFiftyPercent:
791 mainWebView.getSettings().setTextZoom(50);
794 case R.id.fontSizeSeventyFivePercent:
795 mainWebView.getSettings().setTextZoom(75);
798 case R.id.fontSizeOneHundredPercent:
799 mainWebView.getSettings().setTextZoom(100);
802 case R.id.fontSizeOneHundredTwentyFivePercent:
803 mainWebView.getSettings().setTextZoom(125);
806 case R.id.fontSizeOneHundredFiftyPercent:
807 mainWebView.getSettings().setTextZoom(150);
810 case R.id.fontSizeOneHundredSeventyFivePercent:
811 mainWebView.getSettings().setTextZoom(175);
814 case R.id.fontSizeTwoHundredPercent:
815 mainWebView.getSettings().setTextZoom(200);
819 Intent shareIntent = new Intent();
820 shareIntent.setAction(Intent.ACTION_SEND);
821 shareIntent.putExtra(Intent.EXTRA_TEXT, urlTextBox.getText().toString());
822 shareIntent.setType("text/plain");
823 startActivity(Intent.createChooser(shareIntent, "Share URL"));
826 case R.id.addToHomescreen:
827 // Show the `CreateHomeScreenShortcut` `AlertDialog` and name this instance `@string/create_shortcut`.
828 DialogFragment createHomeScreenShortcutDialogFragment = new CreateHomeScreenShortcut();
829 createHomeScreenShortcutDialogFragment.show(getFragmentManager(), getResources().getString(R.string.create_shortcut));
831 //Everything else will be handled by CreateHomeScreenShortcut and the associated listeners below.
835 mainWebView.reload();
839 // Don't consume the event.
840 return super.onOptionsItemSelected(menuItem);
845 // removeAllCookies is deprecated, but it is required for API < 21.
846 @SuppressWarnings("deprecation")
847 public boolean onNavigationItemSelected(MenuItem menuItem) {
848 int menuItemId = menuItem.getItemId();
850 switch (menuItemId) {
852 mainWebView.loadUrl(homepage, customHeaders);
856 if (mainWebView.canGoBack()) {
857 mainWebView.goBack();
862 if (mainWebView.canGoForward()) {
863 mainWebView.goForward();
868 // Launch BookmarksActivity.
869 Intent bookmarksIntent = new Intent(this, BookmarksActivity.class);
870 startActivity(bookmarksIntent);
874 // Launch the system Download Manager.
875 Intent downloadManagerIntent = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS);
877 // Launch as a new task so that Download Manager and Privacy Browser show as separate windows in the recent tasks list.
878 downloadManagerIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
880 startActivity(downloadManagerIntent);
884 // Launch `SettingsActivity`.
885 Intent settingsIntent = new Intent(this, SettingsActivity.class);
886 startActivity(settingsIntent);
890 // Launch `GuideActivity`.
891 Intent guideIntent = new Intent(this, GuideActivity.class);
892 startActivity(guideIntent);
896 // Launch `AboutActivity`.
897 Intent aboutIntent = new Intent(this, AboutActivity.class);
898 startActivity(aboutIntent);
901 case R.id.clearAndExit:
902 // Clear cookies. The commands changed slightly in API 21.
903 if (Build.VERSION.SDK_INT >= 21) {
904 cookieManager.removeAllCookies(null);
906 cookieManager.removeAllCookie();
909 // Clear DOM storage.
910 WebStorage domStorage = WebStorage.getInstance();
911 domStorage.deleteAllData();
914 WebViewDatabase formData = WebViewDatabase.getInstance(this);
915 formData.clearFormData();
917 // Clear cache. The argument of "true" includes disk files.
918 mainWebView.clearCache(true);
920 // Clear the back/forward history.
921 mainWebView.clearHistory();
923 // Clear any SSL certificate preferences.
924 MainWebViewActivity.mainWebView.clearSslPreferences();
926 // Clear `formattedUrlString`.
927 formattedUrlString = null;
929 // Clear `customHeaders`.
930 customHeaders.clear();
932 // Destroy the internal state of the webview.
933 mainWebView.destroy();
935 // Close Privacy Browser. finishAndRemoveTask also removes Privacy Browser from the recent app list.
936 if (Build.VERSION.SDK_INT >= 21) {
937 finishAndRemoveTask();
947 // Close the navigation drawer.
948 drawerLayout.closeDrawer(GravityCompat.START);
953 public void onPostCreate(Bundle savedInstanceState) {
954 super.onPostCreate(savedInstanceState);
956 // Sync the state of the DrawerToggle after onRestoreInstanceState has finished.
957 drawerToggle.syncState();
961 public void onConfigurationChanged(Configuration newConfig) {
962 super.onConfigurationChanged(newConfig);
964 // Reload the ad if this is the free flavor.
965 BannerAd.reloadAfterRotate(adView, getApplicationContext(), getString(R.string.ad_id));
967 // Reinitialize the adView variable, as the View will have been removed and re-added in the free flavor by BannerAd.reloadAfterRotate().
968 adView = findViewById(R.id.adView);
970 // `invalidateOptionsMenu` should recalculate the number of action buttons from the menu to display on the app bar, but it doesn't because of the this bug: https://code.google.com/p/android/issues/detail?id=20493#c8
971 invalidateOptionsMenu();
975 public void onCancelCreateHomeScreenShortcut(DialogFragment dialogFragment) {
976 // Do nothing because the user selected "Cancel".
980 public void onCreateHomeScreenShortcut(DialogFragment dialogFragment) {
981 // Get shortcutNameEditText from the alert dialog.
982 EditText shortcutNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.shortcut_name_edittext);
984 // Create the bookmark shortcut based on formattedUrlString.
985 Intent bookmarkShortcut = new Intent();
986 bookmarkShortcut.setAction(Intent.ACTION_VIEW);
987 bookmarkShortcut.setData(Uri.parse(formattedUrlString));
989 // Place the bookmark shortcut on the home screen.
990 Intent placeBookmarkShortcut = new Intent();
991 placeBookmarkShortcut.putExtra("android.intent.extra.shortcut.INTENT", bookmarkShortcut);
992 placeBookmarkShortcut.putExtra("android.intent.extra.shortcut.NAME", shortcutNameEditText.getText().toString());
993 placeBookmarkShortcut.putExtra("android.intent.extra.shortcut.ICON", favoriteIcon);
994 placeBookmarkShortcut.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
995 sendBroadcast(placeBookmarkShortcut);
998 public void viewSslCertificate(View view) {
999 // Show the `ViewSslCertificate` `AlertDialog` and name this instance `@string/view_ssl_certificate`.
1000 DialogFragment viewSslCertificateDialogFragment = new ViewSslCertificate();
1001 viewSslCertificateDialogFragment.show(getFragmentManager(), getResources().getString(R.string.view_ssl_certificate));
1005 public void onSslErrorCancel() {
1006 sslErrorHandler.cancel();
1010 public void onSslErrorProceed() {
1011 sslErrorHandler.proceed();
1014 // Override onBackPressed to handle the navigation drawer and mainWebView.
1016 public void onBackPressed() {
1017 final WebView mainWebView = (WebView) findViewById(R.id.mainWebView);
1019 // Close the navigation drawer if it is available. GravityCompat.START is the drawer on the left on Left-to-Right layout text.
1020 if (drawerLayout.isDrawerVisible(GravityCompat.START)) {
1021 drawerLayout.closeDrawer(GravityCompat.START);
1023 // Load the previous URL if available.
1024 assert mainWebView != null; //This assert removes the incorrect warning in Android Studio on the following line that mainWebView might be null.
1025 if (mainWebView.canGoBack()) {
1026 mainWebView.goBack();
1028 // Pass onBackPressed to the system.
1029 super.onBackPressed();
1035 public void onPause() {
1036 // We need to pause the adView or it will continue to consume resources in the background on the free flavor.
1037 BannerAd.pauseAd(adView);
1043 public void onResume() {
1046 // We need to resume the adView for the free flavor.
1047 BannerAd.resumeAd(adView);
1050 private void loadUrlFromTextBox() throws UnsupportedEncodingException {
1051 // Get the text from urlTextBox and convert it to a string. trim() removes white spaces from the beginning and end of the string.
1052 String unformattedUrlString = urlTextBox.getText().toString().trim();
1054 URL unformattedUrl = null;
1055 Uri.Builder formattedUri = new Uri.Builder();
1057 // Check to see if unformattedUrlString is a valid URL. Otherwise, convert it into a Duck Duck Go search.
1058 if (Patterns.WEB_URL.matcher(unformattedUrlString).matches()) {
1059 // Add http:// at the beginning if it is missing. Otherwise the app will segfault.
1060 if (!unformattedUrlString.startsWith("http")) {
1061 unformattedUrlString = "http://" + unformattedUrlString;
1064 // 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.
1066 unformattedUrl = new URL(unformattedUrlString);
1067 } catch (MalformedURLException e) {
1068 e.printStackTrace();
1071 // The ternary operator (? :) makes sure that a null pointer exception is not thrown, which would happen if .get was called on a null value.
1072 final String scheme = unformattedUrl != null ? unformattedUrl.getProtocol() : null;
1073 final String authority = unformattedUrl != null ? unformattedUrl.getAuthority() : null;
1074 final String path = unformattedUrl != null ? unformattedUrl.getPath() : null;
1075 final String query = unformattedUrl != null ? unformattedUrl.getQuery() : null;
1076 final String fragment = unformattedUrl != null ? unformattedUrl.getRef() : null;
1078 formattedUri.scheme(scheme).authority(authority).path(path).query(query).fragment(fragment);
1079 formattedUrlString = formattedUri.build().toString();
1081 // Sanitize the search input and convert it to a DuckDuckGo search.
1082 final String encodedUrlString = URLEncoder.encode(unformattedUrlString, "UTF-8");
1084 // Use the correct search URL based on javaScriptEnabled.
1085 if (javaScriptEnabled) {
1086 formattedUrlString = javaScriptEnabledSearchURL + encodedUrlString;
1087 } else { // JavaScript is disabled.
1088 formattedUrlString = javaScriptDisabledSearchURL + encodedUrlString;
1092 mainWebView.loadUrl(formattedUrlString, customHeaders);
1094 // Hides the keyboard so we can see the webpage.
1095 InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Activity.INPUT_METHOD_SERVICE);
1096 inputMethodManager.hideSoftInputFromWindow(mainWebView.getWindowToken(), 0);
1099 public static void updatePrivacyIcons(Activity activity) {
1100 // Get handles for the icons.
1101 MenuItem privacyIcon = mainMenu.findItem(R.id.toggleJavaScript);
1102 MenuItem firstPartyCookiesIcon = mainMenu.findItem(R.id.toggleFirstPartyCookies);
1103 MenuItem thirdPartyCookiesIcon = mainMenu.findItem(R.id.toggleThirdPartyCookies);
1104 MenuItem domStorageIcon = mainMenu.findItem(R.id.toggleDomStorage);
1105 MenuItem formDataIcon = mainMenu.findItem(R.id.toggleSaveFormData);
1107 // Update `privacyIcon`.
1108 if (javaScriptEnabled) {
1109 // `JavaScript` is enabled.
1110 privacyIcon.setIcon(R.drawable.javascript_enabled);
1112 if (firstPartyCookiesEnabled) {
1113 // `JavaScript` is disabled but cookies are enabled.
1114 privacyIcon.setIcon(R.drawable.warning);
1116 // All the dangerous features are disabled.
1117 privacyIcon.setIcon(R.drawable.privacy_mode);
1121 // Update `firstPartyCookiesIcon`.
1122 if (firstPartyCookiesEnabled) {
1123 // First-party cookies are enabled.
1124 firstPartyCookiesIcon.setIcon(R.drawable.cookies_warning);
1126 // First-party cookies are disabled.
1127 firstPartyCookiesIcon.setIcon(R.drawable.cookies_disabled);
1130 // Update `thirdPartyCookiesIcon`.
1131 if (firstPartyCookiesEnabled) {
1132 if (thirdPartyCookiesEnabled) {
1133 // Third-party cookies are enabled. Bad!
1134 thirdPartyCookiesIcon.setIcon(R.drawable.cookies_critical);
1136 // Third-party cookies are disabled.
1137 thirdPartyCookiesIcon.setIcon(R.drawable.cookies_disabled);
1140 // First-party cookies are disabled, so third-party cookies are ghosted.
1141 thirdPartyCookiesIcon.setIcon(R.drawable.cookies_ghosted);
1144 // Update `domStorageIcon`.
1145 if (javaScriptEnabled) {
1146 if (domStorageEnabled) {
1147 domStorageIcon.setIcon(R.drawable.dom_storage_enabled);
1149 domStorageIcon.setIcon(R.drawable.dom_storage_disabled);
1152 domStorageIcon.setIcon(R.drawable.dom_storage_ghosted);
1155 // Update `formDataIcon`.
1156 if (saveFormDataEnabled) {
1157 formDataIcon.setIcon(R.drawable.form_data_enabled);
1159 formDataIcon.setIcon(R.drawable.form_data_disabled);
1162 // `invalidateOptionsMenu` calls `onPrepareOptionsMenu()` and redraws the icons in the `AppBar`.
1163 ActivityCompat.invalidateOptionsMenu(activity);