3 * Copyright (C) 2007 The Android Open Source Project
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 package com.android.browser;
20 import com.google.android.providers.GoogleSettings.Partner;
22 import android.content.ContentResolver;
23 import android.content.Context;
24 import android.content.pm.ActivityInfo;
25 import android.content.SharedPreferences;
26 import android.content.SharedPreferences.Editor;
27 import android.preference.PreferenceActivity;
28 import android.preference.PreferenceScreen;
29 import android.webkit.CookieManager;
30 import android.webkit.GeolocationPermissions;
31 import android.webkit.ValueCallback;
32 import android.webkit.WebView;
33 import android.webkit.WebViewDatabase;
34 import android.webkit.WebIconDatabase;
35 import android.webkit.WebSettings;
36 import android.webkit.WebStorage;
37 import android.preference.PreferenceManager;
38 import android.provider.Browser;
40 import java.util.HashMap;
43 import java.util.Observable;
46 * Package level class for storing various WebView and Browser settings. To use
48 * BrowserSettings s = BrowserSettings.getInstance();
49 * s.addObserver(webView.getSettings());
50 * s.loadFromDb(context); // Only needed on app startup
51 * s.javaScriptEnabled = true;
52 * ... // set any other settings
53 * s.update(); // this will update all the observers
55 * To remove an observer:
56 * s.deleteObserver(webView.getSettings());
58 class BrowserSettings extends Observable {
60 // Private variables for settings
61 // NOTE: these defaults need to be kept in sync with the XML
62 // until the performance of PreferenceManager.setDefaultValues()
64 private boolean loadsImagesAutomatically = true;
65 private boolean javaScriptEnabled = true;
66 private boolean pluginsEnabled = true;
67 private boolean javaScriptCanOpenWindowsAutomatically = false;
68 private boolean showSecurityWarnings = true;
69 private boolean rememberPasswords = true;
70 private boolean saveFormData = true;
71 private boolean openInBackground = false;
72 private String defaultTextEncodingName;
73 private String homeUrl = "";
74 private boolean loginInitialized = false;
75 private boolean autoFitPage = true;
76 private boolean landscapeOnly = false;
77 private boolean loadsPageInOverviewMode = true;
78 private boolean showDebugSettings = false;
80 private boolean appCacheEnabled = true;
81 private boolean databaseEnabled = true;
82 private boolean domStorageEnabled = true;
83 private boolean geolocationEnabled = true;
84 private boolean workersEnabled = true; // only affects V8. JSC does not have a similar setting
85 // HTML5 API configuration params
86 private long appCacheMaxSize = Long.MAX_VALUE;
87 private String appCachePath; // default value set in loadFromDb().
88 private String databasePath; // default value set in loadFromDb()
89 private String geolocationDatabasePath; // default value set in loadFromDb()
90 private WebStorageSizeManager webStorageSizeManager;
92 private String jsFlags = "";
94 private final static String TAG = "BrowserSettings";
96 // Development settings
97 public WebSettings.LayoutAlgorithm layoutAlgorithm =
98 WebSettings.LayoutAlgorithm.NARROW_COLUMNS;
99 private boolean useWideViewPort = true;
100 private int userAgent = 0;
101 private boolean tracing = false;
102 private boolean lightTouch = false;
103 private boolean navDump = false;
105 // By default the error console is shown once the user navigates to about:debug.
106 // The setting can be then toggled from the settings menu.
107 private boolean showConsole = true;
109 // Private preconfigured values
110 private static int minimumFontSize = 8;
111 private static int minimumLogicalFontSize = 8;
112 private static int defaultFontSize = 16;
113 private static int defaultFixedFontSize = 13;
114 private static WebSettings.TextSize textSize =
115 WebSettings.TextSize.NORMAL;
116 private static WebSettings.ZoomDensity zoomDensity =
117 WebSettings.ZoomDensity.MEDIUM;
119 // Preference keys that are used outside this class
120 public final static String PREF_CLEAR_CACHE = "privacy_clear_cache";
121 public final static String PREF_CLEAR_COOKIES = "privacy_clear_cookies";
122 public final static String PREF_CLEAR_HISTORY = "privacy_clear_history";
123 public final static String PREF_HOMEPAGE = "homepage";
124 public final static String PREF_CLEAR_FORM_DATA =
125 "privacy_clear_form_data";
126 public final static String PREF_CLEAR_PASSWORDS =
127 "privacy_clear_passwords";
128 public final static String PREF_EXTRAS_RESET_DEFAULTS =
129 "reset_default_preferences";
130 public final static String PREF_DEBUG_SETTINGS = "debug_menu";
131 public final static String PREF_WEBSITE_SETTINGS = "website_settings";
132 public final static String PREF_TEXT_SIZE = "text_size";
133 public final static String PREF_DEFAULT_ZOOM = "default_zoom";
134 public final static String PREF_DEFAULT_TEXT_ENCODING =
135 "default_text_encoding";
136 public final static String PREF_CLEAR_GEOLOCATION_ACCESS =
137 "privacy_clear_geolocation_access";
139 private static final String DESKTOP_USERAGENT = "Mozilla/5.0 (Macintosh; " +
140 "U; Intel Mac OS X 10_5_7; en-us) AppleWebKit/530.17 (KHTML, " +
141 "like Gecko) Version/4.0 Safari/530.17";
143 private static final String IPHONE_USERAGENT = "Mozilla/5.0 (iPhone; U; " +
144 "CPU iPhone OS 3_0 like Mac OS X; en-us) AppleWebKit/528.18 " +
145 "(KHTML, like Gecko) Version/4.0 Mobile/7A341 Safari/528.16";
147 // Value to truncate strings when adding them to a TextView within
149 public final static int MAX_TEXTVIEW_LEN = 80;
151 private TabControl mTabControl;
153 // Single instance of the BrowserSettings for use in the Browser app.
154 private static BrowserSettings sSingleton;
156 // Private map of WebSettings to Observer objects used when deleting an
158 private HashMap<WebSettings,Observer> mWebSettingsToObservers =
159 new HashMap<WebSettings,Observer>();
162 * An observer wrapper for updating a WebSettings object with the new
163 * settings after a call to BrowserSettings.update().
165 static class Observer implements java.util.Observer {
166 // Private WebSettings object that will be updated.
167 private WebSettings mSettings;
169 Observer(WebSettings w) {
173 public void update(Observable o, Object arg) {
174 BrowserSettings b = (BrowserSettings)o;
175 WebSettings s = mSettings;
177 s.setLayoutAlgorithm(b.layoutAlgorithm);
178 if (b.userAgent == 0) {
179 // use the default ua string
180 s.setUserAgentString(null);
181 } else if (b.userAgent == 1) {
182 s.setUserAgentString(DESKTOP_USERAGENT);
183 } else if (b.userAgent == 2) {
184 s.setUserAgentString(IPHONE_USERAGENT);
186 s.setUseWideViewPort(b.useWideViewPort);
187 s.setLoadsImagesAutomatically(b.loadsImagesAutomatically);
188 s.setJavaScriptEnabled(b.javaScriptEnabled);
189 s.setPluginsEnabled(b.pluginsEnabled);
190 s.setJavaScriptCanOpenWindowsAutomatically(
191 b.javaScriptCanOpenWindowsAutomatically);
192 s.setDefaultTextEncodingName(b.defaultTextEncodingName);
193 s.setMinimumFontSize(b.minimumFontSize);
194 s.setMinimumLogicalFontSize(b.minimumLogicalFontSize);
195 s.setDefaultFontSize(b.defaultFontSize);
196 s.setDefaultFixedFontSize(b.defaultFixedFontSize);
197 s.setNavDump(b.navDump);
198 s.setTextSize(b.textSize);
199 s.setDefaultZoom(b.zoomDensity);
200 s.setLightTouchEnabled(b.lightTouch);
201 s.setSaveFormData(b.saveFormData);
202 s.setSavePassword(b.rememberPasswords);
203 s.setLoadWithOverviewMode(b.loadsPageInOverviewMode);
205 // WebView inside Browser doesn't want initial focus to be set.
206 s.setNeedInitialFocus(false);
207 // Browser supports multiple windows
208 s.setSupportMultipleWindows(true);
211 s.setAppCacheEnabled(b.appCacheEnabled);
212 s.setDatabaseEnabled(b.databaseEnabled);
213 s.setDomStorageEnabled(b.domStorageEnabled);
214 s.setWorkersEnabled(b.workersEnabled); // This only affects V8.
215 s.setGeolocationEnabled(b.geolocationEnabled);
217 // HTML5 configuration parameters.
218 s.setAppCacheMaxSize(b.appCacheMaxSize);
219 s.setAppCachePath(b.appCachePath);
220 s.setDatabasePath(b.databasePath);
221 s.setGeolocationDatabasePath(b.geolocationDatabasePath);
223 // Enable/Disable the error console.
224 b.mTabControl.getBrowserActivity().setShouldShowErrorConsole(
225 b.showDebugSettings && b.showConsole);
230 * Load settings from the browser app's database.
231 * NOTE: Strings used for the preferences must match those specified
232 * in the browser_preferences.xml
233 * @param ctx A Context object used to query the browser's settings
234 * database. If the database exists, the saved settings will be
235 * stored in this BrowserSettings object. This will update all
236 * observers of this object.
238 public void loadFromDb(Context ctx) {
239 SharedPreferences p =
240 PreferenceManager.getDefaultSharedPreferences(ctx);
241 // Set the default value for the Application Caches path.
242 appCachePath = ctx.getDir("appcache", 0).getPath();
243 // Determine the maximum size of the application cache.
244 webStorageSizeManager = new WebStorageSizeManager(
246 new WebStorageSizeManager.StatFsDiskInfo(appCachePath),
247 new WebStorageSizeManager.WebKitAppCacheInfo(appCachePath));
248 appCacheMaxSize = webStorageSizeManager.getAppCacheMaxSize();
249 // Set the default value for the Database path.
250 databasePath = ctx.getDir("databases", 0).getPath();
251 // Set the default value for the Geolocation database path.
252 geolocationDatabasePath = ctx.getDir("geolocation", 0).getPath();
254 homeUrl = getFactoryResetHomeUrl(ctx);
256 // Load the defaults from the xml
257 // This call is TOO SLOW, need to manually keep the defaults
259 //PreferenceManager.setDefaultValues(ctx, R.xml.browser_preferences);
260 syncSharedPreferences(p);
263 /* package */ void syncSharedPreferences(SharedPreferences p) {
266 p.getString(PREF_HOMEPAGE, homeUrl);
268 loadsImagesAutomatically = p.getBoolean("load_images",
269 loadsImagesAutomatically);
270 javaScriptEnabled = p.getBoolean("enable_javascript",
272 pluginsEnabled = p.getBoolean("enable_plugins",
274 javaScriptCanOpenWindowsAutomatically = !p.getBoolean(
275 "block_popup_windows",
276 !javaScriptCanOpenWindowsAutomatically);
277 showSecurityWarnings = p.getBoolean("show_security_warnings",
278 showSecurityWarnings);
279 rememberPasswords = p.getBoolean("remember_passwords",
281 saveFormData = p.getBoolean("save_formdata",
283 boolean accept_cookies = p.getBoolean("accept_cookies",
284 CookieManager.getInstance().acceptCookie());
285 CookieManager.getInstance().setAcceptCookie(accept_cookies);
286 openInBackground = p.getBoolean("open_in_background", openInBackground);
287 loginInitialized = p.getBoolean("login_initialized", loginInitialized);
288 textSize = WebSettings.TextSize.valueOf(
289 p.getString(PREF_TEXT_SIZE, textSize.name()));
290 zoomDensity = WebSettings.ZoomDensity.valueOf(
291 p.getString(PREF_DEFAULT_ZOOM, zoomDensity.name()));
292 autoFitPage = p.getBoolean("autofit_pages", autoFitPage);
293 loadsPageInOverviewMode = p.getBoolean("load_page",
294 loadsPageInOverviewMode);
295 boolean landscapeOnlyTemp =
296 p.getBoolean("landscape_only", landscapeOnly);
297 if (landscapeOnlyTemp != landscapeOnly) {
298 landscapeOnly = landscapeOnlyTemp;
299 mTabControl.getBrowserActivity().setRequestedOrientation(
300 landscapeOnly ? ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
301 : ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
303 useWideViewPort = true; // use wide view port for either setting
305 layoutAlgorithm = WebSettings.LayoutAlgorithm.NARROW_COLUMNS;
307 layoutAlgorithm = WebSettings.LayoutAlgorithm.NORMAL;
309 defaultTextEncodingName =
310 p.getString(PREF_DEFAULT_TEXT_ENCODING,
311 defaultTextEncodingName);
314 p.getBoolean(PREF_DEBUG_SETTINGS, showDebugSettings);
315 // Debug menu items have precidence if the menu is visible
316 if (showDebugSettings) {
317 boolean small_screen = p.getBoolean("small_screen",
319 WebSettings.LayoutAlgorithm.SINGLE_COLUMN);
321 layoutAlgorithm = WebSettings.LayoutAlgorithm.SINGLE_COLUMN;
323 boolean normal_layout = p.getBoolean("normal_layout",
324 layoutAlgorithm == WebSettings.LayoutAlgorithm.NORMAL);
326 layoutAlgorithm = WebSettings.LayoutAlgorithm.NORMAL;
329 WebSettings.LayoutAlgorithm.NARROW_COLUMNS;
332 useWideViewPort = p.getBoolean("wide_viewport", useWideViewPort);
333 tracing = p.getBoolean("enable_tracing", tracing);
334 lightTouch = p.getBoolean("enable_light_touch", lightTouch);
335 navDump = p.getBoolean("enable_nav_dump", navDump);
336 userAgent = Integer.parseInt(p.getString("user_agent", "0"));
338 // JS flags is loaded from DB even if showDebugSettings is false,
339 // so that it can be set once and be effective all the time.
340 jsFlags = p.getString("js_engine_flags", "");
342 // Read the setting for showing/hiding the JS Console always so that should the
343 // user enable debug settings, we already know if we should show the console.
344 // The user will never see the console unless they navigate to about:debug,
345 // regardless of the setting we read here. This setting is only used after debug
347 showConsole = p.getBoolean("javascript_console", showConsole);
348 mTabControl.getBrowserActivity().setShouldShowErrorConsole(
349 showDebugSettings && showConsole);
352 appCacheEnabled = p.getBoolean("enable_appcache", appCacheEnabled);
353 databaseEnabled = p.getBoolean("enable_database", databaseEnabled);
354 domStorageEnabled = p.getBoolean("enable_domstorage", domStorageEnabled);
355 geolocationEnabled = p.getBoolean("enable_geolocation", geolocationEnabled);
356 workersEnabled = p.getBoolean("enable_workers", workersEnabled);
361 public String getHomePage() {
365 public String getJsFlags() {
369 public WebStorageSizeManager getWebStorageSizeManager() {
370 return webStorageSizeManager;
373 public void setHomePage(Context context, String url) {
374 Editor ed = PreferenceManager.
375 getDefaultSharedPreferences(context).edit();
376 ed.putString(PREF_HOMEPAGE, url);
381 public boolean isLoginInitialized() {
382 return loginInitialized;
385 public void setLoginInitialized(Context context) {
386 loginInitialized = true;
387 Editor ed = PreferenceManager.
388 getDefaultSharedPreferences(context).edit();
389 ed.putBoolean("login_initialized", loginInitialized);
393 public WebSettings.TextSize getTextSize() {
397 public WebSettings.ZoomDensity getDefaultZoom() {
401 public boolean openInBackground() {
402 return openInBackground;
405 public boolean showSecurityWarnings() {
406 return showSecurityWarnings;
409 public boolean isTracing() {
413 public boolean isLightTouch() {
417 public boolean isNavDump() {
421 public boolean showDebugSettings() {
422 return showDebugSettings;
425 public void toggleDebugSettings() {
426 showDebugSettings = !showDebugSettings;
427 navDump = showDebugSettings;
432 * Add a WebSettings object to the list of observers that will be updated
433 * when update() is called.
435 * @param s A WebSettings object that is strictly tied to the life of a
438 public Observer addObserver(WebSettings s) {
439 Observer old = mWebSettingsToObservers.get(s);
441 super.deleteObserver(old);
443 Observer o = new Observer(s);
444 mWebSettingsToObservers.put(s, o);
445 super.addObserver(o);
450 * Delete the given WebSettings observer from the list of observers.
451 * @param s The WebSettings object to be deleted.
453 public void deleteObserver(WebSettings s) {
454 Observer o = mWebSettingsToObservers.get(s);
456 mWebSettingsToObservers.remove(s);
457 super.deleteObserver(o);
462 * Package level method for obtaining a single app instance of the
465 /*package*/ static BrowserSettings getInstance() {
466 if (sSingleton == null ) {
467 sSingleton = new BrowserSettings();
473 * Package level method for associating the BrowserSettings with TabControl
475 /* package */void setTabControl(TabControl tabControl) {
476 mTabControl = tabControl;
480 * Update all the observers of the object.
482 /*package*/ void update() {
487 /*package*/ void clearCache(Context context) {
488 WebIconDatabase.getInstance().removeAllIcons();
489 if (mTabControl != null) {
490 WebView current = mTabControl.getCurrentWebView();
491 if (current != null) {
492 current.clearCache(true);
497 /*package*/ void clearCookies(Context context) {
498 CookieManager.getInstance().removeAllCookie();
501 /* package */void clearHistory(Context context) {
502 ContentResolver resolver = context.getContentResolver();
503 Browser.clearHistory(resolver);
504 Browser.clearSearches(resolver);
507 /* package */ void clearFormData(Context context) {
508 WebViewDatabase.getInstance(context).clearFormData();
509 if (mTabControl != null) {
510 mTabControl.getCurrentTopWebView().clearFormData();
514 /*package*/ void clearPasswords(Context context) {
515 WebViewDatabase db = WebViewDatabase.getInstance(context);
516 db.clearUsernamePassword();
517 db.clearHttpAuthUsernamePassword();
520 private void maybeDisableWebsiteSettings(Context context) {
521 PreferenceActivity activity = (PreferenceActivity) context;
522 final PreferenceScreen screen = (PreferenceScreen)
523 activity.findPreference(BrowserSettings.PREF_WEBSITE_SETTINGS);
524 screen.setEnabled(false);
525 WebStorage.getInstance().getOrigins(new ValueCallback<Map>() {
526 public void onReceiveValue(Map webStorageOrigins) {
527 if ((webStorageOrigins != null) && !webStorageOrigins.isEmpty()) {
528 screen.setEnabled(true);
533 GeolocationPermissions.getInstance().getOrigins(new ValueCallback<Set>() {
534 public void onReceiveValue(Set geolocationOrigins) {
535 if ((geolocationOrigins != null) && !geolocationOrigins.isEmpty()) {
536 screen.setEnabled(true);
542 /*package*/ void clearDatabases(Context context) {
543 WebStorage.getInstance().deleteAllData();
544 maybeDisableWebsiteSettings(context);
547 /*package*/ void clearLocationAccess(Context context) {
548 GeolocationPermissions.getInstance().clearAll();
549 maybeDisableWebsiteSettings(context);
552 /*package*/ void resetDefaultPreferences(Context ctx) {
553 SharedPreferences p =
554 PreferenceManager.getDefaultSharedPreferences(ctx);
555 p.edit().clear().commit();
556 PreferenceManager.setDefaultValues(ctx, R.xml.browser_preferences,
559 setHomePage(ctx, getFactoryResetHomeUrl(ctx));
560 // reset appcache max size
561 appCacheMaxSize = webStorageSizeManager.getAppCacheMaxSize();
564 private String getFactoryResetHomeUrl(Context context) {
565 String url = context.getResources().getString(R.string.homepage_base);
566 if (url.indexOf("{CID}") != -1) {
567 url = url.replace("{CID}", Partner.getString(context
568 .getContentResolver(), Partner.CLIENT_ID, "android-google"));
573 // Private constructor that does nothing.
574 private BrowserSettings() {