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 // Browser only settings
110 private boolean doFlick = false;
112 // Private preconfigured values
113 private static int minimumFontSize = 8;
114 private static int minimumLogicalFontSize = 8;
115 private static int defaultFontSize = 16;
116 private static int defaultFixedFontSize = 13;
117 private static WebSettings.TextSize textSize =
118 WebSettings.TextSize.NORMAL;
119 private static WebSettings.ZoomDensity zoomDensity =
120 WebSettings.ZoomDensity.MEDIUM;
122 // Preference keys that are used outside this class
123 public final static String PREF_CLEAR_CACHE = "privacy_clear_cache";
124 public final static String PREF_CLEAR_COOKIES = "privacy_clear_cookies";
125 public final static String PREF_CLEAR_HISTORY = "privacy_clear_history";
126 public final static String PREF_HOMEPAGE = "homepage";
127 public final static String PREF_CLEAR_FORM_DATA =
128 "privacy_clear_form_data";
129 public final static String PREF_CLEAR_PASSWORDS =
130 "privacy_clear_passwords";
131 public final static String PREF_EXTRAS_RESET_DEFAULTS =
132 "reset_default_preferences";
133 public final static String PREF_DEBUG_SETTINGS = "debug_menu";
134 public final static String PREF_WEBSITE_SETTINGS = "website_settings";
135 public final static String PREF_TEXT_SIZE = "text_size";
136 public final static String PREF_DEFAULT_ZOOM = "default_zoom";
137 public final static String PREF_DEFAULT_TEXT_ENCODING =
138 "default_text_encoding";
139 public final static String PREF_CLEAR_GEOLOCATION_ACCESS =
140 "privacy_clear_geolocation_access";
142 private static final String DESKTOP_USERAGENT = "Mozilla/5.0 (Macintosh; " +
143 "U; Intel Mac OS X 10_5_7; en-us) AppleWebKit/530.17 (KHTML, " +
144 "like Gecko) Version/4.0 Safari/530.17";
146 private static final String IPHONE_USERAGENT = "Mozilla/5.0 (iPhone; U; " +
147 "CPU iPhone OS 3_0 like Mac OS X; en-us) AppleWebKit/528.18 " +
148 "(KHTML, like Gecko) Version/4.0 Mobile/7A341 Safari/528.16";
150 // Value to truncate strings when adding them to a TextView within
152 public final static int MAX_TEXTVIEW_LEN = 80;
154 private TabControl mTabControl;
156 // Single instance of the BrowserSettings for use in the Browser app.
157 private static BrowserSettings sSingleton;
159 // Private map of WebSettings to Observer objects used when deleting an
161 private HashMap<WebSettings,Observer> mWebSettingsToObservers =
162 new HashMap<WebSettings,Observer>();
165 * An observer wrapper for updating a WebSettings object with the new
166 * settings after a call to BrowserSettings.update().
168 static class Observer implements java.util.Observer {
169 // Private WebSettings object that will be updated.
170 private WebSettings mSettings;
172 Observer(WebSettings w) {
176 public void update(Observable o, Object arg) {
177 BrowserSettings b = (BrowserSettings)o;
178 WebSettings s = mSettings;
180 s.setLayoutAlgorithm(b.layoutAlgorithm);
181 if (b.userAgent == 0) {
182 // use the default ua string
183 s.setUserAgentString(null);
184 } else if (b.userAgent == 1) {
185 s.setUserAgentString(DESKTOP_USERAGENT);
186 } else if (b.userAgent == 2) {
187 s.setUserAgentString(IPHONE_USERAGENT);
189 s.setUseWideViewPort(b.useWideViewPort);
190 s.setLoadsImagesAutomatically(b.loadsImagesAutomatically);
191 s.setJavaScriptEnabled(b.javaScriptEnabled);
192 s.setPluginsEnabled(b.pluginsEnabled);
193 s.setJavaScriptCanOpenWindowsAutomatically(
194 b.javaScriptCanOpenWindowsAutomatically);
195 s.setDefaultTextEncodingName(b.defaultTextEncodingName);
196 s.setMinimumFontSize(b.minimumFontSize);
197 s.setMinimumLogicalFontSize(b.minimumLogicalFontSize);
198 s.setDefaultFontSize(b.defaultFontSize);
199 s.setDefaultFixedFontSize(b.defaultFixedFontSize);
200 s.setNavDump(b.navDump);
201 s.setTextSize(b.textSize);
202 s.setDefaultZoom(b.zoomDensity);
203 s.setLightTouchEnabled(b.lightTouch);
204 s.setSaveFormData(b.saveFormData);
205 s.setSavePassword(b.rememberPasswords);
206 s.setLoadWithOverviewMode(b.loadsPageInOverviewMode);
208 // WebView inside Browser doesn't want initial focus to be set.
209 s.setNeedInitialFocus(false);
210 // Browser supports multiple windows
211 s.setSupportMultipleWindows(true);
214 s.setAppCacheEnabled(b.appCacheEnabled);
215 s.setDatabaseEnabled(b.databaseEnabled);
216 s.setDomStorageEnabled(b.domStorageEnabled);
217 s.setWorkersEnabled(b.workersEnabled); // This only affects V8.
218 s.setGeolocationEnabled(b.geolocationEnabled);
220 // HTML5 configuration parameters.
221 s.setAppCacheMaxSize(b.appCacheMaxSize);
222 s.setAppCachePath(b.appCachePath);
223 s.setDatabasePath(b.databasePath);
224 s.setGeolocationDatabasePath(b.geolocationDatabasePath);
226 // Enable/Disable the error console.
227 b.mTabControl.getBrowserActivity().setShouldShowErrorConsole(
228 b.showDebugSettings && b.showConsole);
233 * Load settings from the browser app's database.
234 * NOTE: Strings used for the preferences must match those specified
235 * in the browser_preferences.xml
236 * @param ctx A Context object used to query the browser's settings
237 * database. If the database exists, the saved settings will be
238 * stored in this BrowserSettings object. This will update all
239 * observers of this object.
241 public void loadFromDb(Context ctx) {
242 SharedPreferences p =
243 PreferenceManager.getDefaultSharedPreferences(ctx);
244 // Set the default value for the Application Caches path.
245 appCachePath = ctx.getDir("appcache", 0).getPath();
246 // Determine the maximum size of the application cache.
247 webStorageSizeManager = new WebStorageSizeManager(
249 new WebStorageSizeManager.StatFsDiskInfo(appCachePath),
250 new WebStorageSizeManager.WebKitAppCacheInfo(appCachePath));
251 appCacheMaxSize = webStorageSizeManager.getAppCacheMaxSize();
252 // Set the default value for the Database path.
253 databasePath = ctx.getDir("databases", 0).getPath();
254 // Set the default value for the Geolocation database path.
255 geolocationDatabasePath = ctx.getDir("geolocation", 0).getPath();
257 homeUrl = getFactoryResetHomeUrl(ctx);
259 // Load the defaults from the xml
260 // This call is TOO SLOW, need to manually keep the defaults
262 //PreferenceManager.setDefaultValues(ctx, R.xml.browser_preferences);
263 syncSharedPreferences(p);
266 /* package */ void syncSharedPreferences(SharedPreferences p) {
269 p.getString(PREF_HOMEPAGE, homeUrl);
271 loadsImagesAutomatically = p.getBoolean("load_images",
272 loadsImagesAutomatically);
273 javaScriptEnabled = p.getBoolean("enable_javascript",
275 pluginsEnabled = p.getBoolean("enable_plugins",
277 javaScriptCanOpenWindowsAutomatically = !p.getBoolean(
278 "block_popup_windows",
279 !javaScriptCanOpenWindowsAutomatically);
280 showSecurityWarnings = p.getBoolean("show_security_warnings",
281 showSecurityWarnings);
282 rememberPasswords = p.getBoolean("remember_passwords",
284 saveFormData = p.getBoolean("save_formdata",
286 boolean accept_cookies = p.getBoolean("accept_cookies",
287 CookieManager.getInstance().acceptCookie());
288 CookieManager.getInstance().setAcceptCookie(accept_cookies);
289 openInBackground = p.getBoolean("open_in_background", openInBackground);
290 loginInitialized = p.getBoolean("login_initialized", loginInitialized);
291 textSize = WebSettings.TextSize.valueOf(
292 p.getString(PREF_TEXT_SIZE, textSize.name()));
293 zoomDensity = WebSettings.ZoomDensity.valueOf(
294 p.getString(PREF_DEFAULT_ZOOM, zoomDensity.name()));
295 autoFitPage = p.getBoolean("autofit_pages", autoFitPage);
296 loadsPageInOverviewMode = p.getBoolean("load_page",
297 loadsPageInOverviewMode);
298 boolean landscapeOnlyTemp =
299 p.getBoolean("landscape_only", landscapeOnly);
300 if (landscapeOnlyTemp != landscapeOnly) {
301 landscapeOnly = landscapeOnlyTemp;
302 mTabControl.getBrowserActivity().setRequestedOrientation(
303 landscapeOnly ? ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
304 : ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
306 useWideViewPort = true; // use wide view port for either setting
308 layoutAlgorithm = WebSettings.LayoutAlgorithm.NARROW_COLUMNS;
310 layoutAlgorithm = WebSettings.LayoutAlgorithm.NORMAL;
312 defaultTextEncodingName =
313 p.getString(PREF_DEFAULT_TEXT_ENCODING,
314 defaultTextEncodingName);
317 p.getBoolean(PREF_DEBUG_SETTINGS, showDebugSettings);
318 // Debug menu items have precidence if the menu is visible
319 if (showDebugSettings) {
320 boolean small_screen = p.getBoolean("small_screen",
322 WebSettings.LayoutAlgorithm.SINGLE_COLUMN);
324 layoutAlgorithm = WebSettings.LayoutAlgorithm.SINGLE_COLUMN;
326 boolean normal_layout = p.getBoolean("normal_layout",
327 layoutAlgorithm == WebSettings.LayoutAlgorithm.NORMAL);
329 layoutAlgorithm = WebSettings.LayoutAlgorithm.NORMAL;
332 WebSettings.LayoutAlgorithm.NARROW_COLUMNS;
335 useWideViewPort = p.getBoolean("wide_viewport", useWideViewPort);
336 tracing = p.getBoolean("enable_tracing", tracing);
337 lightTouch = p.getBoolean("enable_light_touch", lightTouch);
338 navDump = p.getBoolean("enable_nav_dump", navDump);
339 doFlick = p.getBoolean("enable_flick", doFlick);
340 userAgent = Integer.parseInt(p.getString("user_agent", "0"));
342 // JS flags is loaded from DB even if showDebugSettings is false,
343 // so that it can be set once and be effective all the time.
344 jsFlags = p.getString("js_engine_flags", "");
346 // Read the setting for showing/hiding the JS Console always so that should the
347 // user enable debug settings, we already know if we should show the console.
348 // The user will never see the console unless they navigate to about:debug,
349 // regardless of the setting we read here. This setting is only used after debug
351 showConsole = p.getBoolean("javascript_console", showConsole);
352 mTabControl.getBrowserActivity().setShouldShowErrorConsole(
353 showDebugSettings && showConsole);
356 appCacheEnabled = p.getBoolean("enable_appcache", appCacheEnabled);
357 databaseEnabled = p.getBoolean("enable_database", databaseEnabled);
358 domStorageEnabled = p.getBoolean("enable_domstorage", domStorageEnabled);
359 geolocationEnabled = p.getBoolean("enable_geolocation", geolocationEnabled);
360 workersEnabled = p.getBoolean("enable_workers", workersEnabled);
365 public String getHomePage() {
369 public String getJsFlags() {
373 public WebStorageSizeManager getWebStorageSizeManager() {
374 return webStorageSizeManager;
377 public void setHomePage(Context context, String url) {
378 Editor ed = PreferenceManager.
379 getDefaultSharedPreferences(context).edit();
380 ed.putString(PREF_HOMEPAGE, url);
385 public boolean isLoginInitialized() {
386 return loginInitialized;
389 public void setLoginInitialized(Context context) {
390 loginInitialized = true;
391 Editor ed = PreferenceManager.
392 getDefaultSharedPreferences(context).edit();
393 ed.putBoolean("login_initialized", loginInitialized);
397 public WebSettings.TextSize getTextSize() {
401 public WebSettings.ZoomDensity getDefaultZoom() {
405 public boolean openInBackground() {
406 return openInBackground;
409 public boolean showSecurityWarnings() {
410 return showSecurityWarnings;
413 public boolean isTracing() {
417 public boolean isLightTouch() {
421 public boolean isNavDump() {
425 public boolean doFlick() {
429 public boolean showDebugSettings() {
430 return showDebugSettings;
433 public void toggleDebugSettings() {
434 showDebugSettings = !showDebugSettings;
435 navDump = showDebugSettings;
440 * Add a WebSettings object to the list of observers that will be updated
441 * when update() is called.
443 * @param s A WebSettings object that is strictly tied to the life of a
446 public Observer addObserver(WebSettings s) {
447 Observer old = mWebSettingsToObservers.get(s);
449 super.deleteObserver(old);
451 Observer o = new Observer(s);
452 mWebSettingsToObservers.put(s, o);
453 super.addObserver(o);
458 * Delete the given WebSettings observer from the list of observers.
459 * @param s The WebSettings object to be deleted.
461 public void deleteObserver(WebSettings s) {
462 Observer o = mWebSettingsToObservers.get(s);
464 mWebSettingsToObservers.remove(s);
465 super.deleteObserver(o);
470 * Package level method for obtaining a single app instance of the
473 /*package*/ static BrowserSettings getInstance() {
474 if (sSingleton == null ) {
475 sSingleton = new BrowserSettings();
481 * Package level method for associating the BrowserSettings with TabControl
483 /* package */void setTabControl(TabControl tabControl) {
484 mTabControl = tabControl;
488 * Update all the observers of the object.
490 /*package*/ void update() {
495 /*package*/ void clearCache(Context context) {
496 WebIconDatabase.getInstance().removeAllIcons();
497 if (mTabControl != null) {
498 WebView current = mTabControl.getCurrentWebView();
499 if (current != null) {
500 current.clearCache(true);
505 /*package*/ void clearCookies(Context context) {
506 CookieManager.getInstance().removeAllCookie();
509 /* package */void clearHistory(Context context) {
510 ContentResolver resolver = context.getContentResolver();
511 Browser.clearHistory(resolver);
512 Browser.clearSearches(resolver);
515 /* package */ void clearFormData(Context context) {
516 WebViewDatabase.getInstance(context).clearFormData();
517 if (mTabControl != null) {
518 mTabControl.getCurrentTopWebView().clearFormData();
522 /*package*/ void clearPasswords(Context context) {
523 WebViewDatabase db = WebViewDatabase.getInstance(context);
524 db.clearUsernamePassword();
525 db.clearHttpAuthUsernamePassword();
528 private void maybeDisableWebsiteSettings(Context context) {
529 PreferenceActivity activity = (PreferenceActivity) context;
530 final PreferenceScreen screen = (PreferenceScreen)
531 activity.findPreference(BrowserSettings.PREF_WEBSITE_SETTINGS);
532 screen.setEnabled(false);
533 WebStorage.getInstance().getOrigins(new ValueCallback<Map>() {
534 public void onReceiveValue(Map webStorageOrigins) {
535 if ((webStorageOrigins != null) && !webStorageOrigins.isEmpty()) {
536 screen.setEnabled(true);
541 GeolocationPermissions.getInstance().getOrigins(new ValueCallback<Set>() {
542 public void onReceiveValue(Set geolocationOrigins) {
543 if ((geolocationOrigins != null) && !geolocationOrigins.isEmpty()) {
544 screen.setEnabled(true);
550 /*package*/ void clearDatabases(Context context) {
551 WebStorage.getInstance().deleteAllData();
552 maybeDisableWebsiteSettings(context);
555 /*package*/ void clearLocationAccess(Context context) {
556 GeolocationPermissions.getInstance().clearAll();
557 maybeDisableWebsiteSettings(context);
560 /*package*/ void resetDefaultPreferences(Context ctx) {
561 SharedPreferences p =
562 PreferenceManager.getDefaultSharedPreferences(ctx);
563 p.edit().clear().commit();
564 PreferenceManager.setDefaultValues(ctx, R.xml.browser_preferences,
567 setHomePage(ctx, getFactoryResetHomeUrl(ctx));
568 // reset appcache max size
569 appCacheMaxSize = webStorageSizeManager.getAppCacheMaxSize();
572 private String getFactoryResetHomeUrl(Context context) {
573 String url = context.getResources().getString(R.string.homepage_base);
574 if (url.indexOf("{CID}") != -1) {
575 url = url.replace("{CID}", Partner.getString(context
576 .getContentResolver(), Partner.CLIENT_ID, "android-google"));
581 // Private constructor that does nothing.
582 private BrowserSettings() {