src/com/android/browser/BrowserActivity.java

   1 /*
   2  * Copyright (C) 2006 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package com.android.browser;
  18
  19 import android.app.Activity;
  20 import android.app.AlertDialog;
  21 import android.app.ProgressDialog;
  22 import android.app.SearchManager;
  23 import android.content.ActivityNotFoundException;
  24 import android.content.BroadcastReceiver;
  25 import android.content.ComponentName;
  26 import android.content.ContentProvider;
  27 import android.content.ContentProviderClient;
  28 import android.content.ContentResolver;
  29 import android.content.ContentUris;
  30 import android.content.ContentValues;
  31 import android.content.Context;
  32 import android.content.DialogInterface;
  33 import android.content.Intent;
  34 import android.content.IntentFilter;
  35 import android.content.pm.PackageInfo;
  36 import android.content.pm.PackageManager;
  37 import android.content.pm.ResolveInfo;
  38 import android.content.res.Configuration;
  39 import android.content.res.Resources;
  40 import android.database.Cursor;
  41 import android.database.DatabaseUtils;
  42 import android.graphics.Bitmap;
  43 import android.graphics.BitmapFactory;
  44 import android.graphics.Canvas;
  45 import android.graphics.Picture;
  46 import android.graphics.PixelFormat;
  47 import android.graphics.Rect;
  48 import android.graphics.drawable.Drawable;
  49 import android.net.ConnectivityManager;
  50 import android.net.NetworkInfo;
  51 import android.net.Uri;
  52 import android.net.WebAddress;
  53 import android.net.http.SslCertificate;
  54 import android.net.http.SslError;
  55 import android.os.AsyncTask;
  56 import android.os.Bundle;
  57 import android.os.Debug;
  58 import android.os.Environment;
  59 import android.os.Handler;
  60 import android.os.Message;
  61 import android.os.PowerManager;
  62 import android.os.Process;
  63 import android.os.ServiceManager;
  64 import android.os.SystemClock;
  65 import android.provider.Browser;
  66 import android.provider.ContactsContract;
  67 import android.provider.ContactsContract.Intents.Insert;
  68 import android.provider.Downloads;
  69 import android.provider.MediaStore;
  70 import android.speech.RecognizerResultsIntent;
  71 import android.text.IClipboard;
  72 import android.text.TextUtils;
  73 import android.text.format.DateFormat;
  74 import android.util.AttributeSet;
  75 import android.util.Log;
  76 import android.util.Patterns;
  77 import android.view.ContextMenu;
  78 import android.view.Gravity;
  79 import android.view.KeyEvent;
  80 import android.view.LayoutInflater;
  81 import android.view.Menu;
  82 import android.view.MenuInflater;
  83 import android.view.MenuItem;
  84 import android.view.View;
  85 import android.view.ViewGroup;
  86 import android.view.Window;
  87 import android.view.WindowManager;
  88 import android.view.ContextMenu.ContextMenuInfo;
  89 import android.view.MenuItem.OnMenuItemClickListener;
  90 import android.webkit.CookieManager;
  91 import android.webkit.CookieSyncManager;
  92 import android.webkit.DownloadListener;
  93 import android.webkit.HttpAuthHandler;
  94 import android.webkit.PluginManager;
  95 import android.webkit.SslErrorHandler;
  96 import android.webkit.URLUtil;
  97 import android.webkit.ValueCallback;
  98 import android.webkit.WebChromeClient;
  99 import android.webkit.WebHistoryItem;
 100 import android.webkit.WebIconDatabase;
 101 import android.webkit.WebView;
 102 import android.widget.EditText;
 103 import android.widget.FrameLayout;
 104 import android.widget.LinearLayout;
 105 import android.widget.TextView;
 106 import android.widget.Toast;
 107 import android.accounts.Account;
 108 import android.accounts.AccountManager;
 109 import android.accounts.AccountManagerFuture;
 110 import android.accounts.AuthenticatorException;
 111 import android.accounts.OperationCanceledException;
 112 import android.accounts.AccountManagerCallback;
 113
 114 import com.android.common.Search;
 115 import com.android.common.speech.LoggingEvents;
 116
 117 import java.io.ByteArrayOutputStream;
 118 import java.io.File;
 119 import java.io.IOException;
 120 import java.io.InputStream;
 121 import java.net.MalformedURLException;
 122 import java.net.URI;
 123 import java.net.URISyntaxException;
 124 import java.net.URL;
 125 import java.net.URLEncoder;
 126 import java.text.ParseException;
 127 import java.util.Date;
 128 import java.util.HashMap;
 129 import java.util.HashSet;
 130 import java.util.Iterator;
 131 import java.util.List;
 132 import java.util.Map;
 133 import java.util.Set;
 134 import java.util.regex.Matcher;
 135 import java.util.regex.Pattern;
 136
 137 public class BrowserActivity extends Activity
 138     implements View.OnCreateContextMenuListener, DownloadListener {
 139
 140     /* Define some aliases to make these debugging flags easier to refer to.
 141      * This file imports android.provider.Browser, so we can't just refer to "Browser.DEBUG".
 142      */
 143     private final static boolean DEBUG = com.android.browser.Browser.DEBUG;
 144     private final static boolean LOGV_ENABLED = com.android.browser.Browser.LOGV_ENABLED;
 145     private final static boolean LOGD_ENABLED = com.android.browser.Browser.LOGD_ENABLED;
 146
 147     // These are single-character shortcuts for searching popular sources.
 148     private static final int SHORTCUT_INVALID = 0;
 149     private static final int SHORTCUT_GOOGLE_SEARCH = 1;
 150     private static final int SHORTCUT_WIKIPEDIA_SEARCH = 2;
 151     private static final int SHORTCUT_DICTIONARY_SEARCH = 3;
 152     private static final int SHORTCUT_GOOGLE_MOBILE_LOCAL_SEARCH = 4;
 153
 154     private static class ClearThumbnails extends AsyncTask<File, Void, Void> {
 155         @Override
 156         public Void doInBackground(File... files) {
 157             if (files != null) {
 158                 for (File f : files) {
 159                     if (!f.delete()) {
 160                       Log.e(LOGTAG, f.getPath() + " was not deleted");
 161                     }
 162                 }
 163             }
 164             return null;
 165         }
 166     }
 167
 168     /**
 169      * This layout holds everything you see below the status bar, including the
 170      * error console, the custom view container, and the webviews.
 171      */
 172     private FrameLayout mBrowserFrameLayout;
 173
 174     @Override
 175     public void onCreate(Bundle icicle) {
 176         if (LOGV_ENABLED) {
 177             Log.v(LOGTAG, this + " onStart");
 178         }
 179         super.onCreate(icicle);
 180         // test the browser in OpenGL
 181         // requestWindowFeature(Window.FEATURE_OPENGL);
 182
 183         // enable this to test the browser in 32bit
 184         if (false) {
 185             getWindow().setFormat(PixelFormat.RGBX_8888);
 186             BitmapFactory.setDefaultConfig(Bitmap.Config.ARGB_8888);
 187         }
 188
 189         setDefaultKeyMode(DEFAULT_KEYS_SEARCH_LOCAL);
 190
 191         mResolver = getContentResolver();
 192
 193         // If this was a web search request, pass it on to the default web
 194         // search provider and finish this activity.
 195         if (handleWebSearchIntent(getIntent())) {
 196             finish();
 197             return;
 198         }
 199
 200         mSecLockIcon = Resources.getSystem().getDrawable(
 201                 android.R.drawable.ic_secure);
 202         mMixLockIcon = Resources.getSystem().getDrawable(
 203                 android.R.drawable.ic_partial_secure);
 204
 205         FrameLayout frameLayout = (FrameLayout) getWindow().getDecorView()
 206                 .findViewById(com.android.internal.R.id.content);
 207         mBrowserFrameLayout = (FrameLayout) LayoutInflater.from(this)
 208                 .inflate(R.layout.custom_screen, null);
 209         mContentView = (FrameLayout) mBrowserFrameLayout.findViewById(
 210                 R.id.main_content);
 211         mErrorConsoleContainer = (LinearLayout) mBrowserFrameLayout
 212                 .findViewById(R.id.error_console);
 213         mCustomViewContainer = (FrameLayout) mBrowserFrameLayout
 214                 .findViewById(R.id.fullscreen_custom_content);
 215         frameLayout.addView(mBrowserFrameLayout, COVER_SCREEN_PARAMS);
 216         mTitleBar = new TitleBar(this);
 217         // mTitleBar will be always shown in the fully loaded mode
 218         mTitleBar.setProgress(100);
 219         mFakeTitleBar = new TitleBar(this);
 220
 221         // Create the tab control and our initial tab
 222         mTabControl = new TabControl(this);
 223
 224         // Open the icon database and retain all the bookmark urls for favicons
 225         retainIconsOnStartup();
 226
 227         // Keep a settings instance handy.
 228         mSettings = BrowserSettings.getInstance();
 229         mSettings.setTabControl(mTabControl);
 230
 231         PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 232         mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "Browser");
 233
 234         // Find out if the network is currently up.
 235         ConnectivityManager cm = (ConnectivityManager) getSystemService(
 236                 Context.CONNECTIVITY_SERVICE);
 237         NetworkInfo info = cm.getActiveNetworkInfo();
 238         if (info != null) {
 239             mIsNetworkUp = info.isAvailable();
 240         }
 241
 242         /* enables registration for changes in network status from
 243            http stack */
 244         mNetworkStateChangedFilter = new IntentFilter();
 245         mNetworkStateChangedFilter.addAction(
 246                 ConnectivityManager.CONNECTIVITY_ACTION);
 247         mNetworkStateIntentReceiver = new BroadcastReceiver() {
 248                 @Override
 249                 public void onReceive(Context context, Intent intent) {
 250                     if (intent.getAction().equals(
 251                             ConnectivityManager.CONNECTIVITY_ACTION)) {
 252
 253                         NetworkInfo info = intent.getParcelableExtra(
 254                                 ConnectivityManager.EXTRA_NETWORK_INFO);
 255                         String typeName = info.getTypeName();
 256                         String subtypeName = info.getSubtypeName();
 257                         sendNetworkType(typeName.toLowerCase(),
 258                                 (subtypeName != null ? subtypeName.toLowerCase() : ""));
 259
 260                         onNetworkToggle(info.isAvailable());
 261                     }
 262                 }
 263             };
 264
 265         IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
 266         filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
 267         filter.addDataScheme("package");
 268         mPackageInstallationReceiver = new BroadcastReceiver() {
 269             @Override
 270             public void onReceive(Context context, Intent intent) {
 271                 final String action = intent.getAction();
 272                 final String packageName = intent.getData()
 273                         .getSchemeSpecificPart();
 274                 final boolean replacing = intent.getBooleanExtra(
 275                         Intent.EXTRA_REPLACING, false);
 276                 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) {
 277                     // if it is replacing, refreshPlugins() when adding
 278                     return;
 279                 }
 280
 281                 if (sGoogleApps.contains(packageName)) {
 282                     BrowserActivity.this.packageChanged(packageName,
 283                             Intent.ACTION_PACKAGE_ADDED.equals(action));
 284                 }
 285
 286                 PackageManager pm = BrowserActivity.this.getPackageManager();
 287                 PackageInfo pkgInfo = null;
 288                 try {
 289                     pkgInfo = pm.getPackageInfo(packageName,
 290                             PackageManager.GET_PERMISSIONS);
 291                 } catch (PackageManager.NameNotFoundException e) {
 292                     return;
 293                 }
 294                 if (pkgInfo != null) {
 295                     String permissions[] = pkgInfo.requestedPermissions;
 296                     if (permissions == null) {
 297                         return;
 298                     }
 299                     boolean permissionOk = false;
 300                     for (String permit : permissions) {
 301                         if (PluginManager.PLUGIN_PERMISSION.equals(permit)) {
 302                             permissionOk = true;
 303                             break;
 304                         }
 305                     }
 306                     if (permissionOk) {
 307                         PluginManager.getInstance(BrowserActivity.this)
 308                                 .refreshPlugins(
 309                                         Intent.ACTION_PACKAGE_ADDED
 310                                                 .equals(action));
 311                     }
 312                 }
 313             }
 314         };
 315         registerReceiver(mPackageInstallationReceiver, filter);
 316
 317         if (!mTabControl.restoreState(icicle)) {
 318             // clear up the thumbnail directory if we can't restore the state as
 319             // none of the files in the directory are referenced any more.
 320             new ClearThumbnails().execute(
 321                     mTabControl.getThumbnailDir().listFiles());
 322             // there is no quit on Android. But if we can't restore the state,
 323             // we can treat it as a new Browser, remove the old session cookies.
 324             CookieManager.getInstance().removeSessionCookie();
 325             final Intent intent = getIntent();
 326             final Bundle extra = intent.getExtras();
 327             // Create an initial tab.
 328             // If the intent is ACTION_VIEW and data is not null, the Browser is
 329             // invoked to view the content by another application. In this case,
 330             // the tab will be close when exit.
 331             UrlData urlData = getUrlDataFromIntent(intent);
 332
 333             String action = intent.getAction();
 334             final Tab t = mTabControl.createNewTab(
 335                     (Intent.ACTION_VIEW.equals(action) &&
 336                     intent.getData() != null)
 337                     || RecognizerResultsIntent.ACTION_VOICE_SEARCH_RESULTS
 338                     .equals(action),
 339                     intent.getStringExtra(Browser.EXTRA_APPLICATION_ID), urlData.mUrl);
 340             mTabControl.setCurrentTab(t);
 341             attachTabToContentView(t);
 342             WebView webView = t.getWebView();
 343             if (extra != null) {
 344                 int scale = extra.getInt(Browser.INITIAL_ZOOM_LEVEL, 0);
 345                 if (scale > 0 && scale <= 1000) {
 346                     webView.setInitialScale(scale);
 347                 }
 348             }
 349
 350             if (urlData.isEmpty()) {
 351                 loadUrl(webView, mSettings.getHomePage());
 352             } else {
 353                 loadUrlDataIn(t, urlData);
 354             }
 355         } else {
 356             // TabControl.restoreState() will create a new tab even if
 357             // restoring the state fails.
 358             attachTabToContentView(mTabControl.getCurrentTab());
 359         }
 360
 361         // Read JavaScript flags if it exists.
 362         String jsFlags = mSettings.getJsFlags();
 363         if (jsFlags.trim().length() != 0) {
 364             mTabControl.getCurrentWebView().setJsFlags(jsFlags);
 365         }
 366         // Work out which packages are installed on the system.
 367         getInstalledPackages();
 368
 369         // Start watching the default geolocation permissions
 370         mSystemAllowGeolocationOrigins
 371                 = new SystemAllowGeolocationOrigins(getApplicationContext());
 372         mSystemAllowGeolocationOrigins.start();
 373     }
 374
 375     /**
 376      * Feed the previously stored results strings to the BrowserProvider so that
 377      * the SearchDialog will show them instead of the standard searches.
 378      * @param result String to show on the editable line of the SearchDialog.
 379      */
 380     /* package */ void showVoiceSearchResults(String result) {
 381         ContentProviderClient client = mResolver.acquireContentProviderClient(
 382                 Browser.BOOKMARKS_URI);
 383         ContentProvider prov = client.getLocalContentProvider();
 384         BrowserProvider bp = (BrowserProvider) prov;
 385         bp.setQueryResults(mTabControl.getCurrentTab().getVoiceSearchResults());
 386         client.release();
 387
 388         Bundle bundle = createGoogleSearchSourceBundle(
 389                 GOOGLE_SEARCH_SOURCE_SEARCHKEY);
 390         bundle.putBoolean(SearchManager.CONTEXT_IS_VOICE, true);
 391         startSearch(result, false, bundle, false);
 392     }
 393
 394     @Override
 395     protected void onNewIntent(Intent intent) {
 396         Tab current = mTabControl.getCurrentTab();
 397         // When a tab is closed on exit, the current tab index is set to -1.
 398         // Reset before proceed as Browser requires the current tab to be set.
 399         if (current == null) {
 400             // Try to reset the tab in case the index was incorrect.
 401             current = mTabControl.getTab(0);
 402             if (current == null) {
 403                 // No tabs at all so just ignore this intent.
 404                 return;
 405             }
 406             mTabControl.setCurrentTab(current);
 407             attachTabToContentView(current);
 408             resetTitleAndIcon(current.getWebView());
 409         }
 410         final String action = intent.getAction();
 411         final int flags = intent.getFlags();
 412         if (Intent.ACTION_MAIN.equals(action) ||
 413                 (flags & Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY) != 0) {
 414             // just resume the browser
 415             return;
 416         }
 417         // In case the SearchDialog is open.
 418         ((SearchManager) getSystemService(Context.SEARCH_SERVICE))
 419                 .stopSearch();
 420         boolean activateVoiceSearch = RecognizerResultsIntent
 421                 .ACTION_VOICE_SEARCH_RESULTS.equals(action);
 422         if (Intent.ACTION_VIEW.equals(action)
 423                 || Intent.ACTION_SEARCH.equals(action)
 424                 || MediaStore.INTENT_ACTION_MEDIA_SEARCH.equals(action)
 425                 || Intent.ACTION_WEB_SEARCH.equals(action)
 426                 || activateVoiceSearch) {
 427             if (current.isInVoiceSearchMode()) {
 428                 String title = current.getVoiceDisplayTitle();
 429                 if (title != null && title.equals(intent.getStringExtra(
 430                         SearchManager.QUERY))) {
 431                     // The user submitted the same search as the last voice
 432                     // search, so do nothing.
 433                     return;
 434                 }
 435                 if (Intent.ACTION_SEARCH.equals(action)
 436                         && current.voiceSearchSourceIsGoogle()) {
 437                     Intent logIntent = new Intent(
 438                             LoggingEvents.ACTION_LOG_EVENT);
 439                     logIntent.putExtra(LoggingEvents.EXTRA_EVENT,
 440                             LoggingEvents.VoiceSearch.QUERY_UPDATED);
 441                     logIntent.putExtra(
 442                             LoggingEvents.VoiceSearch.EXTRA_QUERY_UPDATED_VALUE,
 443                             intent.getDataString());
 444                     sendBroadcast(logIntent);
 445                     // Note, onPageStarted will revert the voice title bar
 446                     // When http://b/issue?id=2379215 is fixed, we should update
 447                     // the title bar here.
 448                 }
 449             }
 450             // If this was a search request (e.g. search query directly typed into the address bar),
 451             // pass it on to the default web search provider.
 452             if (handleWebSearchIntent(intent)) {
 453                 return;
 454             }
 455
 456             UrlData urlData = getUrlDataFromIntent(intent);
 457             if (urlData.isEmpty()) {
 458                 urlData = new UrlData(mSettings.getHomePage());
 459             }
 460
 461             final String appId = intent
 462                     .getStringExtra(Browser.EXTRA_APPLICATION_ID);
 463             if ((Intent.ACTION_VIEW.equals(action) || activateVoiceSearch)
 464                     && !getPackageName().equals(appId)
 465                     && (flags & Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) != 0) {
 466                 Tab appTab = mTabControl.getTabFromId(appId);
 467                 if (appTab != null) {
 468                     Log.i(LOGTAG, "Reusing tab for " + appId);
 469                     // Dismiss the subwindow if applicable.
 470                     dismissSubWindow(appTab);
 471                     // Since we might kill the WebView, remove it from the
 472                     // content view first.
 473                     removeTabFromContentView(appTab);
 474                     // Recreate the main WebView after destroying the old one.
 475                     // If the WebView has the same original url and is on that
 476                     // page, it can be reused.
 477                     boolean needsLoad =
 478                             mTabControl.recreateWebView(appTab, urlData);
 479
 480                     if (current != appTab) {
 481                         switchToTab(mTabControl.getTabIndex(appTab));
 482                         if (needsLoad) {
 483                             loadUrlDataIn(appTab, urlData);
 484                         }
 485                     } else {
 486                         // If the tab was the current tab, we have to attach
 487                         // it to the view system again.
 488                         attachTabToContentView(appTab);
 489                         if (needsLoad) {
 490                             loadUrlDataIn(appTab, urlData);
 491                         }
 492                     }
 493                     return;
 494                 } else {
 495                     // No matching application tab, try to find a regular tab
 496                     // with a matching url.
 497                     appTab = mTabControl.findUnusedTabWithUrl(urlData.mUrl);
 498                     if (appTab != null) {
 499                         if (current != appTab) {
 500                             switchToTab(mTabControl.getTabIndex(appTab));
 501                         }
 502                         // Otherwise, we are already viewing the correct tab.
 503                     } else {
 504                         // if FLAG_ACTIVITY_BROUGHT_TO_FRONT flag is on, the url
 505                         // will be opened in a new tab unless we have reached
 506                         // MAX_TABS. Then the url will be opened in the current
 507                         // tab. If a new tab is created, it will have "true" for
 508                         // exit on close.
 509                         openTabAndShow(urlData, true, appId);
 510                     }
 511                 }
 512             } else {
 513                 if (!urlData.isEmpty()
 514                         && urlData.mUrl.startsWith("about:debug")) {
 515                     if ("about:debug.dom".equals(urlData.mUrl)) {
 516                         current.getWebView().dumpDomTree(false);
 517                     } else if ("about:debug.dom.file".equals(urlData.mUrl)) {
 518                         current.getWebView().dumpDomTree(true);
 519                     } else if ("about:debug.render".equals(urlData.mUrl)) {
 520                         current.getWebView().dumpRenderTree(false);
 521                     } else if ("about:debug.render.file".equals(urlData.mUrl)) {
 522                         current.getWebView().dumpRenderTree(true);
 523                     } else if ("about:debug.display".equals(urlData.mUrl)) {
 524                         current.getWebView().dumpDisplayTree();
 525                     } else if (urlData.mUrl.startsWith("about:debug.drag")) {
 526                         int index = urlData.mUrl.codePointAt(16) - '0';
 527                         if (index <= 0 || index > 9) {
 528                             current.getWebView().setDragTracker(null);
 529                         } else {
 530                             current.getWebView().setDragTracker(new MeshTracker(index));
 531                         }
 532                     } else {
 533                         mSettings.toggleDebugSettings();
 534                     }
 535                     return;
 536                 }
 537                 // Get rid of the subwindow if it exists
 538                 dismissSubWindow(current);
 539                 loadUrlDataIn(current, urlData);
 540             }
 541         }
 542     }
 543
 544     private int parseUrlShortcut(String url) {
 545         if (url == null) return SHORTCUT_INVALID;
 546
 547         // FIXME: quick search, need to be customized by setting
 548         if (url.length() > 2 && url.charAt(1) == ' ') {
 549             switch (url.charAt(0)) {
 550             case 'g': return SHORTCUT_GOOGLE_SEARCH;
 551             case 'w': return SHORTCUT_WIKIPEDIA_SEARCH;
 552             case 'd': return SHORTCUT_DICTIONARY_SEARCH;
 553             case 'l': return SHORTCUT_GOOGLE_MOBILE_LOCAL_SEARCH;
 554             }
 555         }
 556         return SHORTCUT_INVALID;
 557     }
 558
 559     /**
 560      * Launches the default web search activity with the query parameters if the given intent's data
 561      * are identified as plain search terms and not URLs/shortcuts.
 562      * @return true if the intent was handled and web search activity was launched, false if not.
 563      */
 564     private boolean handleWebSearchIntent(Intent intent) {
 565         if (intent == null) return false;
 566
 567         String url = null;
 568         final String action = intent.getAction();
 569         if (RecognizerResultsIntent.ACTION_VOICE_SEARCH_RESULTS.equals(
 570                 action)) {
 571             return false;
 572         }
 573         if (Intent.ACTION_VIEW.equals(action)) {
 574             Uri data = intent.getData();
 575             if (data != null) url = data.toString();
 576         } else if (Intent.ACTION_SEARCH.equals(action)
 577                 || MediaStore.INTENT_ACTION_MEDIA_SEARCH.equals(action)
 578                 || Intent.ACTION_WEB_SEARCH.equals(action)) {
 579             url = intent.getStringExtra(SearchManager.QUERY);
 580         }
 581         return handleWebSearchRequest(url, intent.getBundleExtra(SearchManager.APP_DATA),
 582                 intent.getStringExtra(SearchManager.EXTRA_DATA_KEY));
 583     }
 584
 585     /**
 586      * Launches the default web search activity with the query parameters if the given url string
 587      * was identified as plain search terms and not URL/shortcut.
 588      * @return true if the request was handled and web search activity was launched, false if not.
 589      */
 590     private boolean handleWebSearchRequest(String inUrl, Bundle appData, String extraData) {
 591         if (inUrl == null) return false;
 592
 593         // In general, we shouldn't modify URL from Intent.
 594         // But currently, we get the user-typed URL from search box as well.
 595         String url = fixUrl(inUrl).trim();
 596
 597         // URLs and site specific search shortcuts are handled by the regular flow of control, so
 598         // return early.
 599         if (Patterns.WEB_URL.matcher(url).matches()
 600                 || ACCEPTED_URI_SCHEMA.matcher(url).matches()
 601                 || parseUrlShortcut(url) != SHORTCUT_INVALID) {
 602             return false;
 603         }
 604
 605         final ContentResolver cr = mResolver;
 606         final String newUrl = url;
 607         new AsyncTask<Void, Void, Void>() {
 608             protected Void doInBackground(Void... unused) {
 609                 Browser.updateVisitedHistory(cr, newUrl, false);
 610                 Browser.addSearchUrl(cr, newUrl);
 611                 return null;
 612             }
 613         }.execute();
 614
 615         Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
 616         intent.addCategory(Intent.CATEGORY_DEFAULT);
 617         intent.putExtra(SearchManager.QUERY, url);
 618         if (appData != null) {
 619             intent.putExtra(SearchManager.APP_DATA, appData);
 620         }
 621         if (extraData != null) {
 622             intent.putExtra(SearchManager.EXTRA_DATA_KEY, extraData);
 623         }
 624         intent.putExtra(Browser.EXTRA_APPLICATION_ID, getPackageName());
 625         startActivity(intent);
 626
 627         return true;
 628     }
 629
 630     private UrlData getUrlDataFromIntent(Intent intent) {
 631         String url = "";
 632         Map<String, String> headers = null;
 633         if (intent != null) {
 634             final String action = intent.getAction();
 635             if (Intent.ACTION_VIEW.equals(action)) {
 636                 url = smartUrlFilter(intent.getData());
 637                 if (url != null && url.startsWith("content:")) {
 638                     /* Append mimetype so webview knows how to display */
 639                     String mimeType = intent.resolveType(getContentResolver());
 640                     if (mimeType != null) {
 641                         url += "?" + mimeType;
 642                     }
 643                 }
 644                 if (url != null && url.startsWith("http")) {
 645                     final Bundle pairs = intent
 646                             .getBundleExtra(Browser.EXTRA_HEADERS);
 647                     if (pairs != null && !pairs.isEmpty()) {
 648                         Iterator<String> iter = pairs.keySet().iterator();
 649                         headers = new HashMap<String, String>();
 650                         while (iter.hasNext()) {
 651                             String key = iter.next();
 652                             headers.put(key, pairs.getString(key));
 653                         }
 654                     }
 655                 }
 656             } else if (Intent.ACTION_SEARCH.equals(action)
 657                     || MediaStore.INTENT_ACTION_MEDIA_SEARCH.equals(action)
 658                     || Intent.ACTION_WEB_SEARCH.equals(action)) {
 659                 url = intent.getStringExtra(SearchManager.QUERY);
 660                 if (url != null) {
 661                     mLastEnteredUrl = url;
 662                     // In general, we shouldn't modify URL from Intent.
 663                     // But currently, we get the user-typed URL from search box as well.
 664                     url = fixUrl(url);
 665                     url = smartUrlFilter(url);
 666                     final ContentResolver cr = mResolver;
 667                     final String newUrl = url;
 668                     new AsyncTask<Void, Void, Void>() {
 669                         protected Void doInBackground(Void... unused) {
 670                             Browser.updateVisitedHistory(cr, newUrl, false);
 671                             return null;
 672                         }
 673                     }.execute();
 674                     String searchSource = "&source=android-" + GOOGLE_SEARCH_SOURCE_SUGGEST + "&";
 675                     if (url.contains(searchSource)) {
 676                         String source = null;
 677                         final Bundle appData = intent.getBundleExtra(SearchManager.APP_DATA);
 678                         if (appData != null) {
 679                             source = appData.getString(Search.SOURCE);
 680                         }
 681                         if (TextUtils.isEmpty(source)) {
 682                             source = GOOGLE_SEARCH_SOURCE_UNKNOWN;
 683                         }
 684                         url = url.replace(searchSource, "&source=android-"+source+"&");
 685                     }
 686                 }
 687             }
 688         }
 689         return new UrlData(url, headers, intent);
 690     }
 691     /* package */ void showVoiceTitleBar(String title) {
 692         mTitleBar.setInVoiceMode(true);
 693         mFakeTitleBar.setInVoiceMode(true);
 694
 695         mTitleBar.setDisplayTitle(title);
 696         mFakeTitleBar.setDisplayTitle(title);
 697     }
 698     /* package */ void revertVoiceTitleBar() {
 699         mTitleBar.setInVoiceMode(false);
 700         mFakeTitleBar.setInVoiceMode(false);
 701
 702         mTitleBar.setDisplayTitle(mUrl);
 703         mFakeTitleBar.setDisplayTitle(mUrl);
 704     }
 705     /* package */ static String fixUrl(String inUrl) {
 706         // FIXME: Converting the url to lower case
 707         // duplicates functionality in smartUrlFilter().
 708         // However, changing all current callers of fixUrl to
 709         // call smartUrlFilter in addition may have unwanted
 710         // consequences, and is deferred for now.
 711         int colon = inUrl.indexOf(':');
 712         boolean allLower = true;
 713         for (int index = 0; index < colon; index++) {
 714             char ch = inUrl.charAt(index);
 715             if (!Character.isLetter(ch)) {
 716                 break;
 717             }
 718             allLower &= Character.isLowerCase(ch);
 719             if (index == colon - 1 && !allLower) {
 720                 inUrl = inUrl.substring(0, colon).toLowerCase()
 721                         + inUrl.substring(colon);
 722             }
 723         }
 724         if (inUrl.startsWith("http://") || inUrl.startsWith("https://"))
 725             return inUrl;
 726         if (inUrl.startsWith("http:") ||
 727                 inUrl.startsWith("https:")) {
 728             if (inUrl.startsWith("http:/") || inUrl.startsWith("https:/")) {
 729                 inUrl = inUrl.replaceFirst("/", "//");
 730             } else inUrl = inUrl.replaceFirst(":", "://");
 731         }
 732         return inUrl;
 733     }
 734
 735     @Override
 736     protected void onResume() {
 737         super.onResume();
 738         if (LOGV_ENABLED) {
 739             Log.v(LOGTAG, "BrowserActivity.onResume: this=" + this);
 740         }
 741
 742         if (!mActivityInPause) {
 743             Log.e(LOGTAG, "BrowserActivity is already resumed.");
 744             return;
 745         }
 746
 747         mTabControl.resumeCurrentTab();
 748         mActivityInPause = false;
 749         resumeWebViewTimers();
 750
 751         if (mWakeLock.isHeld()) {
 752             mHandler.removeMessages(RELEASE_WAKELOCK);
 753             mWakeLock.release();
 754         }
 755
 756         registerReceiver(mNetworkStateIntentReceiver,
 757                          mNetworkStateChangedFilter);
 758         WebView.enablePlatformNotifications();
 759     }
 760
 761     /**
 762      * Since the actual title bar is embedded in the WebView, and removing it
 763      * would change its appearance, use a different TitleBar to show overlayed
 764      * at the top of the screen, when the menu is open or the page is loading.
 765      */
 766     private TitleBar mFakeTitleBar;
 767
 768     /**
 769      * Keeps track of whether the options menu is open.  This is important in
 770      * determining whether to show or hide the title bar overlay.
 771      */
 772     private boolean mOptionsMenuOpen;
 773
 774     /**
 775      * Only meaningful when mOptionsMenuOpen is true.  This variable keeps track
 776      * of whether the configuration has changed.  The first onMenuOpened call
 777      * after a configuration change is simply a reopening of the same menu
 778      * (i.e. mIconView did not change).
 779      */
 780     private boolean mConfigChanged;
 781
 782     /**
 783      * Whether or not the options menu is in its smaller, icon menu form.  When
 784      * true, we want the title bar overlay to be up.  When false, we do not.
 785      * Only meaningful if mOptionsMenuOpen is true.
 786      */
 787     private boolean mIconView;
 788
 789     @Override
 790     public boolean onMenuOpened(int featureId, Menu menu) {
 791         if (Window.FEATURE_OPTIONS_PANEL == featureId) {
 792             if (mOptionsMenuOpen) {
 793                 if (mConfigChanged) {
 794                     // We do not need to make any changes to the state of the
 795                     // title bar, since the only thing that happened was a
 796                     // change in orientation
 797                     mConfigChanged = false;
 798                 } else {
 799                     if (mIconView) {
 800                         // Switching the menu to expanded view, so hide the
 801                         // title bar.
 802                         hideFakeTitleBar();
 803                         mIconView = false;
 804                     } else {
 805                         // Switching the menu back to icon view, so show the
 806                         // title bar once again.
 807                         showFakeTitleBar();
 808                         mIconView = true;
 809                     }
 810                 }
 811             } else {
 812                 // The options menu is closed, so open it, and show the title
 813                 showFakeTitleBar();
 814                 mOptionsMenuOpen = true;
 815                 mConfigChanged = false;
 816                 mIconView = true;
 817             }
 818         }
 819         return true;
 820     }
 821
 822     private void showFakeTitleBar() {
 823         final View decor = getWindow().peekDecorView();
 824         if (mFakeTitleBar.getParent() == null && mActiveTabsPage == null
 825                 && !mActivityInPause && decor != null
 826                 && decor.getWindowToken() != null) {
 827             Rect visRect = new Rect();
 828             if (!mBrowserFrameLayout.getGlobalVisibleRect(visRect)) {
 829                 if (LOGD_ENABLED) {
 830                     Log.d(LOGTAG, "showFakeTitleBar visRect failed");
 831                 }
 832                 return;
 833             }
 834
 835             WindowManager manager
 836                     = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
 837
 838             // Add the title bar to the window manager so it can receive touches
 839             // while the menu is up
 840             WindowManager.LayoutParams params
 841                     = new WindowManager.LayoutParams(
 842                     ViewGroup.LayoutParams.MATCH_PARENT,
 843                     ViewGroup.LayoutParams.WRAP_CONTENT,
 844                     WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL,
 845                     WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
 846                     PixelFormat.TRANSLUCENT);
 847             params.gravity = Gravity.TOP;
 848             WebView mainView = mTabControl.getCurrentWebView();
 849             boolean atTop = mainView != null && mainView.getScrollY() == 0;
 850             params.windowAnimations = atTop ? 0 : R.style.TitleBar;
 851             // XXX : Without providing an offset, the fake title bar will be
 852             // placed underneath the status bar.  Use the global visible rect
 853             // of mBrowserFrameLayout to determine the bottom of the status bar
 854             params.y = visRect.top;
 855             manager.addView(mFakeTitleBar, params);
 856         }
 857     }
 858
 859     @Override
 860     public void onOptionsMenuClosed(Menu menu) {
 861         mOptionsMenuOpen = false;
 862         if (!mInLoad) {
 863             hideFakeTitleBar();
 864         } else if (!mIconView) {
 865             // The page is currently loading, and we are in expanded mode, so
 866             // we were not showing the menu.  Show it once again.  It will be
 867             // removed when the page finishes.
 868             showFakeTitleBar();
 869         }
 870     }
 871
 872     private void hideFakeTitleBar() {
 873         if (mFakeTitleBar.getParent() == null) return;
 874         WindowManager.LayoutParams params = (WindowManager.LayoutParams)
 875                 mFakeTitleBar.getLayoutParams();
 876         WebView mainView = mTabControl.getCurrentWebView();
 877         // Although we decided whether or not to animate based on the current
 878         // scroll position, the scroll position may have changed since the
 879         // fake title bar was displayed.  Make sure it has the appropriate
 880         // animation/lack thereof before removing.
 881         params.windowAnimations = mainView != null && mainView.getScrollY() == 0
 882                 ? 0 : R.style.TitleBar;
 883         WindowManager manager
 884                     = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
 885         manager.updateViewLayout(mFakeTitleBar, params);
 886         manager.removeView(mFakeTitleBar);
 887     }
 888
 889     /**
 890      * Special method for the fake title bar to call when displaying its context
 891      * menu, since it is in its own Window, and its parent does not show a
 892      * context menu.
 893      */
 894     /* package */ void showTitleBarContextMenu() {
 895         if (null == mTitleBar.getParent()) {
 896             return;
 897         }
 898         openContextMenu(mTitleBar);
 899     }
 900
 901     @Override
 902     public void onContextMenuClosed(Menu menu) {
 903         super.onContextMenuClosed(menu);
 904         if (mInLoad) {
 905             showFakeTitleBar();
 906         }
 907     }
 908
 909     /**
 910      *  onSaveInstanceState(Bundle map)
 911      *  onSaveInstanceState is called right before onStop(). The map contains
 912      *  the saved state.
 913      */
 914     @Override
 915     protected void onSaveInstanceState(Bundle outState) {
 916         if (LOGV_ENABLED) {
 917             Log.v(LOGTAG, "BrowserActivity.onSaveInstanceState: this=" + this);
 918         }
 919         // the default implementation requires each view to have an id. As the
 920         // browser handles the state itself and it doesn't use id for the views,
 921         // don't call the default implementation. Otherwise it will trigger the
 922         // warning like this, "couldn't save which view has focus because the
 923         // focused view XXX has no id".
 924
 925         // Save all the tabs
 926         mTabControl.saveState(outState);
 927     }
 928
 929     @Override
 930     protected void onPause() {
 931         super.onPause();
 932
 933         if (mActivityInPause) {
 934             Log.e(LOGTAG, "BrowserActivity is already paused.");
 935             return;
 936         }
 937
 938         mTabControl.pauseCurrentTab();
 939         mActivityInPause = true;
 940         if (mTabControl.getCurrentIndex() >= 0 && !pauseWebViewTimers()) {
 941             mWakeLock.acquire();
 942             mHandler.sendMessageDelayed(mHandler
 943                     .obtainMessage(RELEASE_WAKELOCK), WAKELOCK_TIMEOUT);
 944         }
 945
 946         // FIXME: This removes the active tabs page and resets the menu to
 947         // MAIN_MENU.  A better solution might be to do this work in onNewIntent
 948         // but then we would need to save it in onSaveInstanceState and restore
 949         // it in onCreate/onRestoreInstanceState
 950         if (mActiveTabsPage != null) {
 951             removeActiveTabPage(true);
 952         }
 953
 954         cancelStopToast();
 955
 956         // unregister network state listener
 957         unregisterReceiver(mNetworkStateIntentReceiver);
 958         WebView.disablePlatformNotifications();
 959     }
 960
 961     @Override
 962     protected void onDestroy() {
 963         if (LOGV_ENABLED) {
 964             Log.v(LOGTAG, "BrowserActivity.onDestroy: this=" + this);
 965         }
 966         super.onDestroy();
 967
 968         if (mUploadMessage != null) {
 969             mUploadMessage.onReceiveValue(null);
 970             mUploadMessage = null;
 971         }
 972
 973         if (mTabControl == null) return;
 974
 975         // Remove the fake title bar if it is there
 976         hideFakeTitleBar();
 977
 978         // Remove the current tab and sub window
 979         Tab t = mTabControl.getCurrentTab();
 980         if (t != null) {
 981             dismissSubWindow(t);
 982             removeTabFromContentView(t);
 983         }
 984         // Destroy all the tabs
 985         mTabControl.destroy();
 986         WebIconDatabase.getInstance().close();
 987
 988         unregisterReceiver(mPackageInstallationReceiver);
 989
 990         // Stop watching the default geolocation permissions
 991         mSystemAllowGeolocationOrigins.stop();
 992         mSystemAllowGeolocationOrigins = null;
 993     }
 994
 995     @Override
 996     public void onConfigurationChanged(Configuration newConfig) {
 997         mConfigChanged = true;
 998         super.onConfigurationChanged(newConfig);
 999
1000         if (mPageInfoDialog != null) {
1001             mPageInfoDialog.dismiss();
1002             showPageInfo(
1003                 mPageInfoView,
1004                 mPageInfoFromShowSSLCertificateOnError);
1005         }
1006         if (mSSLCertificateDialog != null) {
1007             mSSLCertificateDialog.dismiss();
1008             showSSLCertificate(
1009                 mSSLCertificateView);
1010         }
1011         if (mSSLCertificateOnErrorDialog != null) {
1012             mSSLCertificateOnErrorDialog.dismiss();
1013             showSSLCertificateOnError(
1014                 mSSLCertificateOnErrorView,
1015                 mSSLCertificateOnErrorHandler,
1016                 mSSLCertificateOnErrorError);
1017         }
1018         if (mHttpAuthenticationDialog != null) {
1019             String title = ((TextView) mHttpAuthenticationDialog
1020                     .findViewById(com.android.internal.R.id.alertTitle)).getText()
1021                     .toString();
1022             String name = ((TextView) mHttpAuthenticationDialog
1023                     .findViewById(R.id.username_edit)).getText().toString();
1024             String password = ((TextView) mHttpAuthenticationDialog
1025                     .findViewById(R.id.password_edit)).getText().toString();
1026             int focusId = mHttpAuthenticationDialog.getCurrentFocus()
1027                     .getId();
1028             mHttpAuthenticationDialog.dismiss();
1029             showHttpAuthentication(mHttpAuthHandler, null, null, title,
1030                     name, password, focusId);
1031         }
1032     }
1033
1034     @Override
1035     public void onLowMemory() {
1036         super.onLowMemory();
1037         mTabControl.freeMemory();
1038     }
1039
1040     private void resumeWebViewTimers() {
1041         Tab tab = mTabControl.getCurrentTab();
1042         if (tab == null) return; // monkey can trigger this
1043         boolean inLoad = tab.inLoad();
1044         if ((!mActivityInPause && !inLoad) || (mActivityInPause && inLoad)) {
1045             CookieSyncManager.getInstance().startSync();
1046             WebView w = tab.getWebView();
1047             if (w != null) {
1048                 w.resumeTimers();
1049             }
1050         }
1051     }
1052
1053     private boolean pauseWebViewTimers() {
1054         Tab tab = mTabControl.getCurrentTab();
1055         boolean inLoad = tab.inLoad();
1056         if (mActivityInPause && !inLoad) {
1057             CookieSyncManager.getInstance().stopSync();
1058             WebView w = mTabControl.getCurrentWebView();
1059             if (w != null) {
1060                 w.pauseTimers();
1061             }
1062             return true;
1063         } else {
1064             return false;
1065         }
1066     }
1067
1068     // Open the icon database and retain all the icons for visited sites.
1069     private void retainIconsOnStartup() {
1070         final WebIconDatabase db = WebIconDatabase.getInstance();
1071         db.open(getDir("icons", 0).getPath());
1072         Cursor c = null;
1073         try {
1074             c = Browser.getAllBookmarks(mResolver);
1075             if (c.moveToFirst()) {
1076                 int urlIndex = c.getColumnIndex(Browser.BookmarkColumns.URL);
1077                 do {
1078                     String url = c.getString(urlIndex);
1079                     db.retainIconForPageUrl(url);
1080                 } while (c.moveToNext());
1081             }
1082         } catch (IllegalStateException e) {
1083             Log.e(LOGTAG, "retainIconsOnStartup", e);
1084         } finally {
1085             if (c!= null) c.close();
1086         }
1087     }
1088
1089     // Helper method for getting the top window.
1090     WebView getTopWindow() {
1091         return mTabControl.getCurrentTopWebView();
1092     }
1093
1094     TabControl getTabControl() {
1095         return mTabControl;
1096     }
1097
1098     @Override
1099     public boolean onCreateOptionsMenu(Menu menu) {
1100         super.onCreateOptionsMenu(menu);
1101
1102         MenuInflater inflater = getMenuInflater();
1103         inflater.inflate(R.menu.browser, menu);
1104         mMenu = menu;
1105         updateInLoadMenuItems();
1106         return true;
1107     }
1108
1109     /**
1110      * As the menu can be open when loading state changes
1111      * we must manually update the state of the stop/reload menu
1112      * item
1113      */
1114     private void updateInLoadMenuItems() {
1115         if (mMenu == null) {
1116             return;
1117         }
1118         MenuItem src = mInLoad ?
1119                 mMenu.findItem(R.id.stop_menu_id):
1120                     mMenu.findItem(R.id.reload_menu_id);
1121         MenuItem dest = mMenu.findItem(R.id.stop_reload_menu_id);
1122         dest.setIcon(src.getIcon());
1123         dest.setTitle(src.getTitle());
1124     }
1125
1126     @Override
1127     public boolean onContextItemSelected(MenuItem item) {
1128         // chording is not an issue with context menus, but we use the same
1129         // options selector, so set mCanChord to true so we can access them.
1130         mCanChord = true;
1131         int id = item.getItemId();
1132         boolean result = true;
1133         switch (id) {
1134             // For the context menu from the title bar
1135             case R.id.title_bar_copy_page_url:
1136                 Tab currentTab = mTabControl.getCurrentTab();
1137                 if (null == currentTab) {
1138                     result = false;
1139                     break;
1140                 }
1141                 WebView mainView = currentTab.getWebView();
1142                 if (null == mainView) {
1143                     result = false;
1144                     break;
1145                 }
1146                 copy(mainView.getUrl());
1147                 break;
1148             // -- Browser context menu
1149             case R.id.open_context_menu_id:
1150             case R.id.open_newtab_context_menu_id:
1151             case R.id.bookmark_context_menu_id:
1152             case R.id.save_link_context_menu_id:
1153             case R.id.share_link_context_menu_id:
1154             case R.id.copy_link_context_menu_id:
1155                 final WebView webView = getTopWindow();
1156                 if (null == webView) {
1157                     result = false;
1158                     break;
1159                 }
1160                 final HashMap hrefMap = new HashMap();
1161                 hrefMap.put("webview", webView);
1162                 final Message msg = mHandler.obtainMessage(
1163                         FOCUS_NODE_HREF, id, 0, hrefMap);
1164                 webView.requestFocusNodeHref(msg);
1165                 break;
1166
1167             default:
1168                 // For other context menus
1169                 result = onOptionsItemSelected(item);
1170         }
1171         mCanChord = false;
1172         return result;
1173     }
1174
1175     private Bundle createGoogleSearchSourceBundle(String source) {
1176         Bundle bundle = new Bundle();
1177         bundle.putString(Search.SOURCE, source);
1178         return bundle;
1179     }
1180
1181     /* package */ void editUrl() {
1182         if (mOptionsMenuOpen) closeOptionsMenu();
1183         String url = (getTopWindow() == null) ? null : getTopWindow().getUrl();
1184         startSearch(mSettings.getHomePage().equals(url) ? null : url, true,
1185                 null, false);
1186     }
1187
1188     /**
1189      * Overriding this to insert a local information bundle
1190      */
1191     @Override
1192     public void startSearch(String initialQuery, boolean selectInitialQuery,
1193             Bundle appSearchData, boolean globalSearch) {
1194         if (appSearchData == null) {
1195             appSearchData = createGoogleSearchSourceBundle(GOOGLE_SEARCH_SOURCE_TYPE);
1196         }
1197         super.startSearch(initialQuery, selectInitialQuery, appSearchData, globalSearch);
1198     }
1199
1200     /**
1201      * Switch tabs.  Called by the TitleBarSet when sliding the title bar
1202      * results in changing tabs.
1203      * @param index Index of the tab to change to, as defined by
1204      *              mTabControl.getTabIndex(Tab t).
1205      * @return boolean True if we successfully switched to a different tab.  If
1206      *                 the indexth tab is null, or if that tab is the same as
1207      *                 the current one, return false.
1208      */
1209     /* package */ boolean switchToTab(int index) {
1210         Tab tab = mTabControl.getTab(index);
1211         Tab currentTab = mTabControl.getCurrentTab();
1212         if (tab == null || tab == currentTab) {
1213             return false;
1214         }
1215         if (currentTab != null) {
1216             // currentTab may be null if it was just removed.  In that case,
1217             // we do not need to remove it
1218             removeTabFromContentView(currentTab);
1219         }
1220         mTabControl.setCurrentTab(tab);
1221         attachTabToContentView(tab);
1222         resetTitleIconAndProgress();
1223         updateLockIconToLatest();
1224         return true;
1225     }
1226
1227     /* package */ Tab openTabToHomePage() {
1228         return openTabAndShow(mSettings.getHomePage(), false, null);
1229     }
1230
1231     /* package */ void closeCurrentWindow() {
1232         final Tab current = mTabControl.getCurrentTab();
1233         if (mTabControl.getTabCount() == 1) {
1234             // This is the last tab.  Open a new one, with the home
1235             // page and close the current one.
1236             openTabToHomePage();
1237             closeTab(current);
1238             return;
1239         }
1240         final Tab parent = current.getParentTab();
1241         int indexToShow = -1;
1242         if (parent != null) {
1243             indexToShow = mTabControl.getTabIndex(parent);
1244         } else {
1245             final int currentIndex = mTabControl.getCurrentIndex();
1246             // Try to move to the tab to the right
1247             indexToShow = currentIndex + 1;
1248             if (indexToShow > mTabControl.getTabCount() - 1) {
1249                 // Try to move to the tab to the left
1250                 indexToShow = currentIndex - 1;
1251             }
1252         }
1253         if (switchToTab(indexToShow)) {
1254             // Close window
1255             closeTab(current);
1256         }
1257     }
1258
1259     private ActiveTabsPage mActiveTabsPage;
1260
1261     /**
1262      * Remove the active tabs page.
1263      * @param needToAttach If true, the active tabs page did not attach a tab
1264      *                     to the content view, so we need to do that here.
1265      */
1266     /* package */ void removeActiveTabPage(boolean needToAttach) {
1267         mContentView.removeView(mActiveTabsPage);
1268         mActiveTabsPage = null;
1269         mMenuState = R.id.MAIN_MENU;
1270         if (needToAttach) {
1271             attachTabToContentView(mTabControl.getCurrentTab());
1272         }
1273         getTopWindow().requestFocus();
1274     }
1275
1276     @Override
1277     public boolean onOptionsItemSelected(MenuItem item) {
1278         if (!mCanChord) {
1279             // The user has already fired a shortcut with this hold down of the
1280             // menu key.
1281             return false;
1282         }
1283         if (null == getTopWindow()) {
1284             return false;
1285         }
1286         if (mMenuIsDown) {
1287             // The shortcut action consumes the MENU. Even if it is still down,
1288             // it won't trigger the next shortcut action. In the case of the
1289             // shortcut action triggering a new activity, like Bookmarks, we
1290             // won't get onKeyUp for MENU. So it is important to reset it here.
1291             mMenuIsDown = false;
1292         }
1293         switch (item.getItemId()) {
1294             // -- Main menu
1295             case R.id.new_tab_menu_id:
1296                 openTabToHomePage();
1297                 break;
1298
1299             case R.id.goto_menu_id:
1300                 editUrl();
1301                 break;
1302
1303             case R.id.bookmarks_menu_id:
1304                 bookmarksOrHistoryPicker(false);
1305                 break;
1306
1307             case R.id.active_tabs_menu_id:
1308                 mActiveTabsPage = new ActiveTabsPage(this, mTabControl);
1309                 removeTabFromContentView(mTabControl.getCurrentTab());
1310                 hideFakeTitleBar();
1311                 mContentView.addView(mActiveTabsPage, COVER_SCREEN_PARAMS);
1312                 mActiveTabsPage.requestFocus();
1313                 mMenuState = EMPTY_MENU;
1314                 break;
1315
1316             case R.id.add_bookmark_menu_id:
1317                 Intent i = new Intent(BrowserActivity.this,
1318                         AddBookmarkPage.class);
1319                 WebView w = getTopWindow();
1320                 i.putExtra("url", w.getUrl());
1321                 i.putExtra("title", w.getTitle());
1322                 i.putExtra("touch_icon_url", w.getTouchIconUrl());
1323                 i.putExtra("thumbnail", createScreenshot(w));
1324                 startActivity(i);
1325                 break;
1326
1327             case R.id.stop_reload_menu_id:
1328                 if (mInLoad) {
1329                     stopLoading();
1330                 } else {
1331                     getTopWindow().reload();
1332                 }
1333                 break;
1334
1335             case R.id.back_menu_id:
1336                 getTopWindow().goBack();
1337                 break;
1338
1339             case R.id.forward_menu_id:
1340                 getTopWindow().goForward();
1341                 break;
1342
1343             case R.id.close_menu_id:
1344                 // Close the subwindow if it exists.
1345                 if (mTabControl.getCurrentSubWindow() != null) {
1346                     dismissSubWindow(mTabControl.getCurrentTab());
1347                     break;
1348                 }
1349                 closeCurrentWindow();
1350                 break;
1351
1352             case R.id.homepage_menu_id:
1353                 Tab current = mTabControl.getCurrentTab();
1354                 if (current != null) {
1355                     dismissSubWindow(current);
1356                     loadUrl(current.getWebView(), mSettings.getHomePage());
1357                 }
1358                 break;
1359
1360             case R.id.preferences_menu_id:
1361                 Intent intent = new Intent(this,
1362                         BrowserPreferencesPage.class);
1363                 intent.putExtra(BrowserPreferencesPage.CURRENT_PAGE,
1364                         getTopWindow().getUrl());
1365                 startActivityForResult(intent, PREFERENCES_PAGE);
1366                 break;
1367
1368             case R.id.find_menu_id:
1369                 if (null == mFindDialog) {
1370                     mFindDialog = new FindDialog(this);
1371                 }
1372                 mFindDialog.setWebView(getTopWindow());
1373                 mFindDialog.show();
1374                 getTopWindow().setFindIsUp(true);
1375                 mMenuState = EMPTY_MENU;
1376                 break;
1377
1378             case R.id.select_text_id:
1379                 getTopWindow().emulateShiftHeld();
1380                 break;
1381             case R.id.page_info_menu_id:
1382                 showPageInfo(mTabControl.getCurrentTab(), false);
1383                 break;
1384
1385             case R.id.classic_history_menu_id:
1386                 bookmarksOrHistoryPicker(true);
1387                 break;
1388
1389             case R.id.title_bar_share_page_url:
1390             case R.id.share_page_menu_id:
1391                 Tab currentTab = mTabControl.getCurrentTab();
1392                 if (null == currentTab) {
1393                     mCanChord = false;
1394                     return false;
1395                 }
1396                 currentTab.populatePickerData();
1397                 sharePage(this, currentTab.getTitle(),
1398                         currentTab.getUrl(), currentTab.getFavicon(),
1399                         createScreenshot(currentTab.getWebView()));
1400                 break;
1401
1402             case R.id.dump_nav_menu_id:
1403                 getTopWindow().debugDump();
1404                 break;
1405
1406             case R.id.dump_counters_menu_id:
1407                 getTopWindow().dumpV8Counters();
1408                 break;
1409
1410             case R.id.zoom_in_menu_id:
1411                 getTopWindow().zoomIn();
1412                 break;
1413
1414             case R.id.zoom_out_menu_id:
1415                 getTopWindow().zoomOut();
1416                 break;
1417
1418             case R.id.view_downloads_menu_id:
1419                 viewDownloads(null);
1420                 break;
1421
1422             case R.id.window_one_menu_id:
1423             case R.id.window_two_menu_id:
1424             case R.id.window_three_menu_id:
1425             case R.id.window_four_menu_id:
1426             case R.id.window_five_menu_id:
1427             case R.id.window_six_menu_id:
1428             case R.id.window_seven_menu_id:
1429             case R.id.window_eight_menu_id:
1430                 {
1431                     int menuid = item.getItemId();
1432                     for (int id = 0; id < WINDOW_SHORTCUT_ID_ARRAY.length; id++) {
1433                         if (WINDOW_SHORTCUT_ID_ARRAY[id] == menuid) {
1434                             Tab desiredTab = mTabControl.getTab(id);
1435                             if (desiredTab != null &&
1436                                     desiredTab != mTabControl.getCurrentTab()) {
1437                                 switchToTab(id);
1438                             }
1439                             break;
1440                         }
1441                     }
1442                 }
1443                 break;
1444
1445             default:
1446                 if (!super.onOptionsItemSelected(item)) {
1447                     return false;
1448                 }
1449                 // Otherwise fall through.
1450         }
1451         mCanChord = false;
1452         return true;
1453     }
1454
1455     public void closeFind() {
1456         mMenuState = R.id.MAIN_MENU;
1457     }
1458
1459     @Override
1460     public boolean onPrepareOptionsMenu(Menu menu) {
1461         // This happens when the user begins to hold down the menu key, so
1462         // allow them to chord to get a shortcut.
1463         mCanChord = true;
1464         // Note: setVisible will decide whether an item is visible; while
1465         // setEnabled() will decide whether an item is enabled, which also means
1466         // whether the matching shortcut key will function.
1467         super.onPrepareOptionsMenu(menu);
1468         switch (mMenuState) {
1469             case EMPTY_MENU:
1470                 if (mCurrentMenuState != mMenuState) {
1471                     menu.setGroupVisible(R.id.MAIN_MENU, false);
1472                     menu.setGroupEnabled(R.id.MAIN_MENU, false);
1473                     menu.setGroupEnabled(R.id.MAIN_SHORTCUT_MENU, false);
1474                 }
1475                 break;
1476             default:
1477                 if (mCurrentMenuState != mMenuState) {
1478                     menu.setGroupVisible(R.id.MAIN_MENU, true);
1479                     menu.setGroupEnabled(R.id.MAIN_MENU, true);
1480                     menu.setGroupEnabled(R.id.MAIN_SHORTCUT_MENU, true);
1481                 }
1482                 final WebView w = getTopWindow();
1483                 boolean canGoBack = false;
1484                 boolean canGoForward = false;
1485                 boolean isHome = false;
1486                 if (w != null) {
1487                     canGoBack = w.canGoBack();
1488                     canGoForward = w.canGoForward();
1489                     isHome = mSettings.getHomePage().equals(w.getUrl());
1490                 }
1491                 final MenuItem back = menu.findItem(R.id.back_menu_id);
1492                 back.setEnabled(canGoBack);
1493
1494                 final MenuItem home = menu.findItem(R.id.homepage_menu_id);
1495                 home.setEnabled(!isHome);
1496
1497                 menu.findItem(R.id.forward_menu_id)
1498                         .setEnabled(canGoForward);
1499
1500                 menu.findItem(R.id.new_tab_menu_id).setEnabled(
1501                         mTabControl.canCreateNewTab());
1502
1503                 // decide whether to show the share link option
1504                 PackageManager pm = getPackageManager();
1505                 Intent send = new Intent(Intent.ACTION_SEND);
1506                 send.setType("text/plain");
1507                 ResolveInfo ri = pm.resolveActivity(send, PackageManager.MATCH_DEFAULT_ONLY);
1508                 menu.findItem(R.id.share_page_menu_id).setVisible(ri != null);
1509
1510                 boolean isNavDump = mSettings.isNavDump();
1511                 final MenuItem nav = menu.findItem(R.id.dump_nav_menu_id);
1512                 nav.setVisible(isNavDump);
1513                 nav.setEnabled(isNavDump);
1514
1515                 boolean showDebugSettings = mSettings.showDebugSettings();
1516                 final MenuItem counter = menu.findItem(R.id.dump_counters_menu_id);
1517                 counter.setVisible(showDebugSettings);
1518                 counter.setEnabled(showDebugSettings);
1519
1520                 break;
1521         }
1522         mCurrentMenuState = mMenuState;
1523         return true;
1524     }
1525
1526     @Override
1527     public void onCreateContextMenu(ContextMenu menu, View v,
1528             ContextMenuInfo menuInfo) {
1529         if (v instanceof TitleBar) {
1530             return;
1531         }
1532         WebView webview = (WebView) v;
1533         WebView.HitTestResult result = webview.getHitTestResult();
1534         if (result == null) {
1535             return;
1536         }
1537
1538         int type = result.getType();
1539         if (type == WebView.HitTestResult.UNKNOWN_TYPE) {
1540             Log.w(LOGTAG,
1541                     "We should not show context menu when nothing is touched");
1542             return;
1543         }
1544         if (type == WebView.HitTestResult.EDIT_TEXT_TYPE) {
1545             // let TextView handles context menu
1546             return;
1547         }
1548
1549         // Note, http://b/issue?id=1106666 is requesting that
1550         // an inflated menu can be used again. This is not available
1551         // yet, so inflate each time (yuk!)
1552         MenuInflater inflater = getMenuInflater();
1553         inflater.inflate(R.menu.browsercontext, menu);
1554
1555         // Show the correct menu group
1556         String extra = result.getExtra();
1557         menu.setGroupVisible(R.id.PHONE_MENU,
1558                 type == WebView.HitTestResult.PHONE_TYPE);
1559         menu.setGroupVisible(R.id.EMAIL_MENU,
1560                 type == WebView.HitTestResult.EMAIL_TYPE);
1561         menu.setGroupVisible(R.id.GEO_MENU,
1562                 type == WebView.HitTestResult.GEO_TYPE);
1563         menu.setGroupVisible(R.id.IMAGE_MENU,
1564                 type == WebView.HitTestResult.IMAGE_TYPE
1565                 || type == WebView.HitTestResult.SRC_IMAGE_ANCHOR_TYPE);
1566         menu.setGroupVisible(R.id.ANCHOR_MENU,
1567                 type == WebView.HitTestResult.SRC_ANCHOR_TYPE
1568                 || type == WebView.HitTestResult.SRC_IMAGE_ANCHOR_TYPE);
1569
1570         // Setup custom handling depending on the type
1571         switch (type) {
1572             case WebView.HitTestResult.PHONE_TYPE:
1573                 menu.setHeaderTitle(Uri.decode(extra));
1574                 menu.findItem(R.id.dial_context_menu_id).setIntent(
1575                         new Intent(Intent.ACTION_VIEW, Uri
1576                                 .parse(WebView.SCHEME_TEL + extra)));
1577                 Intent addIntent = new Intent(Intent.ACTION_INSERT_OR_EDIT);
1578                 addIntent.putExtra(Insert.PHONE, Uri.decode(extra));
1579                 addIntent.setType(ContactsContract.Contacts.CONTENT_ITEM_TYPE);
1580                 menu.findItem(R.id.add_contact_context_menu_id).setIntent(
1581                         addIntent);
1582                 menu.findItem(R.id.copy_phone_context_menu_id).setOnMenuItemClickListener(
1583                         new Copy(extra));
1584                 break;
1585
1586             case WebView.HitTestResult.EMAIL_TYPE:
1587                 menu.setHeaderTitle(extra);
1588                 menu.findItem(R.id.email_context_menu_id).setIntent(
1589                         new Intent(Intent.ACTION_VIEW, Uri
1590                                 .parse(WebView.SCHEME_MAILTO + extra)));
1591                 menu.findItem(R.id.copy_mail_context_menu_id).setOnMenuItemClickListener(
1592                         new Copy(extra));
1593                 break;
1594
1595             case WebView.HitTestResult.GEO_TYPE:
1596                 menu.setHeaderTitle(extra);
1597                 menu.findItem(R.id.map_context_menu_id).setIntent(
1598                         new Intent(Intent.ACTION_VIEW, Uri
1599                                 .parse(WebView.SCHEME_GEO
1600                                         + URLEncoder.encode(extra))));
1601                 menu.findItem(R.id.copy_geo_context_menu_id).setOnMenuItemClickListener(
1602                         new Copy(extra));
1603                 break;
1604
1605             case WebView.HitTestResult.SRC_ANCHOR_TYPE:
1606             case WebView.HitTestResult.SRC_IMAGE_ANCHOR_TYPE:
1607                 TextView titleView = (TextView) LayoutInflater.from(this)
1608                         .inflate(android.R.layout.browser_link_context_header,
1609                         null);
1610                 titleView.setText(extra);
1611                 menu.setHeaderView(titleView);
1612                 // decide whether to show the open link in new tab option
1613                 menu.findItem(R.id.open_newtab_context_menu_id).setVisible(
1614                         mTabControl.canCreateNewTab());
1615                 menu.findItem(R.id.bookmark_context_menu_id).setVisible(
1616                         Bookmarks.urlHasAcceptableScheme(extra));
1617                 PackageManager pm = getPackageManager();
1618                 Intent send = new Intent(Intent.ACTION_SEND);
1619                 send.setType("text/plain");
1620                 ResolveInfo ri = pm.resolveActivity(send, PackageManager.MATCH_DEFAULT_ONLY);
1621                 menu.findItem(R.id.share_link_context_menu_id).setVisible(ri != null);
1622                 if (type == WebView.HitTestResult.SRC_ANCHOR_TYPE) {
1623                     break;
1624                 }
1625                 // otherwise fall through to handle image part
1626             case WebView.HitTestResult.IMAGE_TYPE:
1627                 if (type == WebView.HitTestResult.IMAGE_TYPE) {
1628                     menu.setHeaderTitle(extra);
1629                 }
1630                 menu.findItem(R.id.view_image_context_menu_id).setIntent(
1631                         new Intent(Intent.ACTION_VIEW, Uri.parse(extra)));
1632                 menu.findItem(R.id.download_context_menu_id).
1633                         setOnMenuItemClickListener(new Download(extra));
1634                 menu.findItem(R.id.set_wallpaper_context_menu_id).
1635                         setOnMenuItemClickListener(new SetAsWallpaper(extra));
1636                 break;
1637
1638             default:
1639                 Log.w(LOGTAG, "We should not get here.");
1640                 break;
1641         }
1642         hideFakeTitleBar();
1643     }
1644
1645     // Attach the given tab to the content view.
1646     // this should only be called for the current tab.
1647     private void attachTabToContentView(Tab t) {
1648         // Attach the container that contains the main WebView and any other UI
1649         // associated with the tab.
1650         t.attachTabToContentView(mContentView);
1651
1652         if (mShouldShowErrorConsole) {
1653             ErrorConsoleView errorConsole = t.getErrorConsole(true);
1654             if (errorConsole.numberOfErrors() == 0) {
1655                 errorConsole.showConsole(ErrorConsoleView.SHOW_NONE);
1656             } else {
1657                 errorConsole.showConsole(ErrorConsoleView.SHOW_MINIMIZED);
1658             }
1659
1660             mErrorConsoleContainer.addView(errorConsole,
1661                     new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
1662                                                   ViewGroup.LayoutParams.WRAP_CONTENT));
1663         }
1664
1665         WebView view = t.getWebView();
1666         view.setEmbeddedTitleBar(mTitleBar);
1667         if (t.isInVoiceSearchMode()) {
1668             showVoiceTitleBar(t.getVoiceDisplayTitle());
1669         } else {
1670             revertVoiceTitleBar();
1671         }
1672         // Request focus on the top window.
1673         t.getTopWindow().requestFocus();
1674     }
1675
1676     // Attach a sub window to the main WebView of the given tab.
1677     void attachSubWindow(Tab t) {
1678         t.attachSubWindow(mContentView);
1679         getTopWindow().requestFocus();
1680     }
1681
1682     // Remove the given tab from the content view.
1683     private void removeTabFromContentView(Tab t) {
1684         // Remove the container that contains the main WebView.
1685         t.removeTabFromContentView(mContentView);
1686
1687         ErrorConsoleView errorConsole = t.getErrorConsole(false);
1688         if (errorConsole != null) {
1689             mErrorConsoleContainer.removeView(errorConsole);
1690         }
1691
1692         WebView view = t.getWebView();
1693         if (view != null) {
1694             view.setEmbeddedTitleBar(null);
1695         }
1696     }
1697
1698     // Remove the sub window if it exists. Also called by TabControl when the
1699     // user clicks the 'X' to dismiss a sub window.
1700     /* package */ void dismissSubWindow(Tab t) {
1701         t.removeSubWindow(mContentView);
1702         // dismiss the subwindow. This will destroy the WebView.
1703         t.dismissSubWindow();
1704         getTopWindow().requestFocus();
1705     }
1706
1707     // A wrapper function of {@link #openTabAndShow(UrlData, boolean, String)}
1708     // that accepts url as string.
1709     private Tab openTabAndShow(String url, boolean closeOnExit, String appId) {
1710         return openTabAndShow(new UrlData(url), closeOnExit, appId);
1711     }
1712
1713     // This method does a ton of stuff. It will attempt to create a new tab
1714     // if we haven't reached MAX_TABS. Otherwise it uses the current tab. If
1715     // url isn't null, it will load the given url.
1716     /* package */Tab openTabAndShow(UrlData urlData, boolean closeOnExit,
1717             String appId) {
1718         final Tab currentTab = mTabControl.getCurrentTab();
1719         if (mTabControl.canCreateNewTab()) {
1720             final Tab tab = mTabControl.createNewTab(closeOnExit, appId,
1721                     urlData.mUrl);
1722             WebView webview = tab.getWebView();
1723             // If the last tab was removed from the active tabs page, currentTab
1724             // will be null.
1725             if (currentTab != null) {
1726                 removeTabFromContentView(currentTab);
1727             }
1728             // We must set the new tab as the current tab to reflect the old
1729             // animation behavior.
1730             mTabControl.setCurrentTab(tab);
1731             attachTabToContentView(tab);
1732             if (!urlData.isEmpty()) {
1733                 loadUrlDataIn(tab, urlData);
1734             }
1735             return tab;
1736         } else {
1737             // Get rid of the subwindow if it exists
1738             dismissSubWindow(currentTab);
1739             if (!urlData.isEmpty()) {
1740                 // Load the given url.
1741                 loadUrlDataIn(currentTab, urlData);
1742             }
1743             return currentTab;
1744         }
1745     }
1746
1747     private Tab openTab(String url) {
1748         if (mSettings.openInBackground()) {
1749             Tab t = mTabControl.createNewTab();
1750             if (t != null) {
1751                 WebView view = t.getWebView();
1752                 loadUrl(view, url);
1753             }
1754             return t;
1755         } else {
1756             return openTabAndShow(url, false, null);
1757         }
1758     }
1759
1760     private class Copy implements OnMenuItemClickListener {
1761         private CharSequence mText;
1762
1763         public boolean onMenuItemClick(MenuItem item) {
1764             copy(mText);
1765             return true;
1766         }
1767
1768         public Copy(CharSequence toCopy) {
1769             mText = toCopy;
1770         }
1771     }
1772
1773     private class Download implements OnMenuItemClickListener {
1774         private String mText;
1775
1776         public boolean onMenuItemClick(MenuItem item) {
1777             onDownloadStartNoStream(mText, null, null, null, -1);
1778             return true;
1779         }
1780
1781         public Download(String toDownload) {
1782             mText = toDownload;
1783         }
1784     }
1785
1786     private class SetAsWallpaper extends Thread implements
1787             OnMenuItemClickListener, DialogInterface.OnCancelListener {
1788         private URL mUrl;
1789         private ProgressDialog mWallpaperProgress;
1790         private boolean mCanceled = false;
1791
1792         public SetAsWallpaper(String url) {
1793             try {
1794                 mUrl = new URL(url);
1795             } catch (MalformedURLException e) {
1796                 mUrl = null;
1797             }
1798         }
1799
1800         public void onCancel(DialogInterface dialog) {
1801             mCanceled = true;
1802         }
1803
1804         public boolean onMenuItemClick(MenuItem item) {
1805             if (mUrl != null) {
1806                 // The user may have tried to set a image with a large file size as their
1807                 // background so it may take a few moments to perform the operation. Display
1808                 // a progress spinner while it is working.
1809                 mWallpaperProgress = new ProgressDialog(BrowserActivity.this);
1810                 mWallpaperProgress.setIndeterminate(true);
1811                 mWallpaperProgress.setMessage(getText(R.string.progress_dialog_setting_wallpaper));
1812                 mWallpaperProgress.setCancelable(true);
1813                 mWallpaperProgress.setOnCancelListener(this);
1814                 mWallpaperProgress.show();
1815                 start();
1816             }
1817             return true;
1818         }
1819
1820         public void run() {
1821             Drawable oldWallpaper = BrowserActivity.this.getWallpaper();
1822             try {
1823                 // TODO: This will cause the resource to be downloaded again, when we
1824                 // should in most cases be able to grab it from the cache. To fix this
1825                 // we should query WebCore to see if we can access a cached version and
1826                 // instead open an input stream on that. This pattern could also be used
1827                 // in the download manager where the same problem exists.
1828                 InputStream inputstream = mUrl.openStream();
1829                 if (inputstream != null) {
1830                     setWallpaper(inputstream);
1831                 }
1832             } catch (IOException e) {
1833                 Log.e(LOGTAG, "Unable to set new wallpaper");
1834                 // Act as though the user canceled the operation so we try to
1835                 // restore the old wallpaper.
1836                 mCanceled = true;
1837             }
1838
1839             if (mCanceled) {
1840                 // Restore the old wallpaper if the user cancelled whilst we were setting
1841                 // the new wallpaper.
1842                 int width = oldWallpaper.getIntrinsicWidth();
1843                 int height = oldWallpaper.getIntrinsicHeight();
1844                 Bitmap bm = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
1845                 Canvas canvas = new Canvas(bm);
1846                 oldWallpaper.setBounds(0, 0, width, height);
1847                 oldWallpaper.draw(canvas);
1848                 try {
1849                     setWallpaper(bm);
1850                 } catch (IOException e) {
1851                     Log.e(LOGTAG, "Unable to restore old wallpaper.");
1852                 }
1853                 mCanceled = false;
1854             }
1855
1856             if (mWallpaperProgress.isShowing()) {
1857                 mWallpaperProgress.dismiss();
1858             }
1859         }
1860     }
1861
1862     private void copy(CharSequence text) {
1863         try {
1864             IClipboard clip = IClipboard.Stub.asInterface(ServiceManager.getService("clipboard"));
1865             if (clip != null) {
1866                 clip.setClipboardText(text);
1867             }
1868         } catch (android.os.RemoteException e) {
1869             Log.e(LOGTAG, "Copy failed", e);
1870         }
1871     }
1872
1873     /**
1874      * Resets the browser title-view to whatever it must be
1875      * (for example, if we had a loading error)
1876      * When we have a new page, we call resetTitle, when we
1877      * have to reset the titlebar to whatever it used to be
1878      * (for example, if the user chose to stop loading), we
1879      * call resetTitleAndRevertLockIcon.
1880      */
1881     /* package */ void resetTitleAndRevertLockIcon() {
1882         mTabControl.getCurrentTab().revertLockIcon();
1883         updateLockIconToLatest();
1884         resetTitleIconAndProgress();
1885     }
1886
1887     /**
1888      * Reset the title, favicon, and progress.
1889      */
1890     private void resetTitleIconAndProgress() {
1891         WebView current = mTabControl.getCurrentWebView();
1892         if (current == null) {
1893             return;
1894         }
1895         resetTitleAndIcon(current);
1896         int progress = current.getProgress();
1897         current.getWebChromeClient().onProgressChanged(current, progress);
1898     }
1899
1900     // Reset the title and the icon based on the given item.
1901     private void resetTitleAndIcon(WebView view) {
1902         WebHistoryItem item = view.copyBackForwardList().getCurrentItem();
1903         if (item != null) {
1904             setUrlTitle(item.getUrl(), item.getTitle());
1905             setFavicon(item.getFavicon());
1906         } else {
1907             setUrlTitle(null, null);
1908             setFavicon(null);
1909         }
1910     }
1911
1912     /**
1913      * Sets a title composed of the URL and the title string.
1914      * @param url The URL of the site being loaded.
1915      * @param title The title of the site being loaded.
1916      */
1917     void setUrlTitle(String url, String title) {
1918         mUrl = url;
1919         mTitle = title;
1920
1921         // If we are in voice search mode, the title has already been set.
1922         if (mTabControl.getCurrentTab().isInVoiceSearchMode()) return;
1923         mTitleBar.setDisplayTitle(url);
1924         mFakeTitleBar.setDisplayTitle(url);
1925     }
1926
1927     /**
1928      * @param url The URL to build a title version of the URL from.
1929      * @return The title version of the URL or null if fails.
1930      * The title version of the URL can be either the URL hostname,
1931      * or the hostname with an "https://" prefix (for secure URLs),
1932      * or an empty string if, for example, the URL in question is a
1933      * file:// URL with no hostname.
1934      */
1935     /* package */ static String buildTitleUrl(String url) {
1936         String titleUrl = null;
1937
1938         if (url != null) {
1939             try {
1940                 // parse the url string
1941                 URL urlObj = new URL(url);
1942                 if (urlObj != null) {
1943                     titleUrl = "";
1944
1945                     String protocol = urlObj.getProtocol();
1946                     String host = urlObj.getHost();
1947
1948                     if (host != null && 0 < host.length()) {
1949                         titleUrl = host;
1950                         if (protocol != null) {
1951                             // if a secure site, add an "https://" prefix!
1952                             if (protocol.equalsIgnoreCase("https")) {
1953                                 titleUrl = protocol + "://" + host;
1954                             }
1955                         }
1956                     }
1957                 }
1958             } catch (MalformedURLException e) {}
1959         }
1960
1961         return titleUrl;
1962     }
1963
1964     // Set the favicon in the title bar.
1965     void setFavicon(Bitmap icon) {
1966         mTitleBar.setFavicon(icon);
1967         mFakeTitleBar.setFavicon(icon);
1968     }
1969
1970     /**
1971      * Close the tab, remove its associated title bar, and adjust mTabControl's
1972      * current tab to a valid value.
1973      */
1974     /* package */ void closeTab(Tab t) {
1975         int currentIndex = mTabControl.getCurrentIndex();
1976         int removeIndex = mTabControl.getTabIndex(t);
1977         mTabControl.removeTab(t);
1978         if (currentIndex >= removeIndex && currentIndex != 0) {
1979             currentIndex--;
1980         }
1981         mTabControl.setCurrentTab(mTabControl.getTab(currentIndex));
1982         resetTitleIconAndProgress();
1983     }
1984
1985     /* package */ void goBackOnePageOrQuit() {
1986         Tab current = mTabControl.getCurrentTab();
1987         if (current == null) {
1988             /*
1989              * Instead of finishing the activity, simply push this to the back
1990              * of the stack and let ActivityManager to choose the foreground
1991              * activity. As BrowserActivity is singleTask, it will be always the
1992              * root of the task. So we can use either true or false for
1993              * moveTaskToBack().
1994              */
1995             moveTaskToBack(true);
1996             return;
1997         }
1998         WebView w = current.getWebView();
1999         if (w.canGoBack()) {
2000             w.goBack();
2001         } else {
2002             // Check to see if we are closing a window that was created by
2003             // another window. If so, we switch back to that window.
2004             Tab parent = current.getParentTab();
2005             if (parent != null) {
2006                 switchToTab(mTabControl.getTabIndex(parent));
2007                 // Now we close the other tab
2008                 closeTab(current);
2009             } else {
2010                 if (current.closeOnExit()) {
2011                     // force the tab's inLoad() to be false as we are going to
2012                     // either finish the activity or remove the tab. This will
2013                     // ensure pauseWebViewTimers() taking action.
2014                     mTabControl.getCurrentTab().clearInLoad();
2015                     if (mTabControl.getTabCount() == 1) {
2016                         finish();
2017                         return;
2018                     }
2019                     // call pauseWebViewTimers() now, we won't be able to call
2020                     // it in onPause() as the WebView won't be valid.
2021                     // Temporarily change mActivityInPause to be true as
2022                     // pauseWebViewTimers() will do nothing if mActivityInPause
2023                     // is false.
2024                     boolean savedState = mActivityInPause;
2025                     if (savedState) {
2026                         Log.e(LOGTAG, "BrowserActivity is already paused "
2027                                 + "while handing goBackOnePageOrQuit.");
2028                     }
2029                     mActivityInPause = true;
2030                     pauseWebViewTimers();
2031                     mActivityInPause = savedState;
2032                     removeTabFromContentView(current);
2033                     mTabControl.removeTab(current);
2034                 }
2035                 /*
2036                  * Instead of finishing the activity, simply push this to the back
2037                  * of the stack and let ActivityManager to choose the foreground
2038                  * activity. As BrowserActivity is singleTask, it will be always the
2039                  * root of the task. So we can use either true or false for
2040                  * moveTaskToBack().
2041                  */
2042                 moveTaskToBack(true);
2043             }
2044         }
2045     }
2046
2047     boolean isMenuDown() {
2048         return mMenuIsDown;
2049     }
2050
2051     @Override
2052     public boolean onKeyDown(int keyCode, KeyEvent event) {
2053         // Even if MENU is already held down, we need to call to super to open
2054         // the IME on long press.
2055         if (KeyEvent.KEYCODE_MENU == keyCode) {
2056             mMenuIsDown = true;
2057             return super.onKeyDown(keyCode, event);
2058         }
2059         // The default key mode is DEFAULT_KEYS_SEARCH_LOCAL. As the MENU is
2060         // still down, we don't want to trigger the search. Pretend to consume
2061         // the key and do nothing.
2062         if (mMenuIsDown) return true;
2063
2064         switch(keyCode) {
2065             case KeyEvent.KEYCODE_SPACE:
2066                 // WebView/WebTextView handle the keys in the KeyDown. As
2067                 // the Activity's shortcut keys are only handled when WebView
2068                 // doesn't, have to do it in onKeyDown instead of onKeyUp.
2069                 if (event.isShiftPressed()) {
2070                     getTopWindow().pageUp(false);
2071                 } else {
2072                     getTopWindow().pageDown(false);
2073                 }
2074                 return true;
2075             case KeyEvent.KEYCODE_BACK:
2076                 if (event.getRepeatCount() == 0) {
2077                     event.startTracking();
2078                     return true;
2079                 } else if (mCustomView == null && mActiveTabsPage == null
2080                         && event.isLongPress()) {
2081                     bookmarksOrHistoryPicker(true);
2082                     return true;
2083                 }
2084                 break;
2085         }
2086         return super.onKeyDown(keyCode, event);
2087     }
2088
2089     @Override
2090     public boolean onKeyUp(int keyCode, KeyEvent event) {
2091         switch(keyCode) {
2092             case KeyEvent.KEYCODE_MENU:
2093                 mMenuIsDown = false;
2094                 break;
2095             case KeyEvent.KEYCODE_BACK:
2096                 if (event.isTracking() && !event.isCanceled()) {
2097                     if (mCustomView != null) {
2098                         // if a custom view is showing, hide it
2099                         mTabControl.getCurrentWebView().getWebChromeClient()
2100                                 .onHideCustomView();
2101                     } else if (mActiveTabsPage != null) {
2102                         // if tab page is showing, hide it
2103                         removeActiveTabPage(true);
2104                     } else {
2105                         WebView subwindow = mTabControl.getCurrentSubWindow();
2106                         if (subwindow != null) {
2107                             if (subwindow.canGoBack()) {
2108                                 subwindow.goBack();
2109                             } else {
2110                                 dismissSubWindow(mTabControl.getCurrentTab());
2111                             }
2112                         } else {
2113                             goBackOnePageOrQuit();
2114                         }
2115                     }
2116                     return true;
2117                 }
2118                 break;
2119         }
2120         return super.onKeyUp(keyCode, event);
2121     }
2122
2123     /* package */ void stopLoading() {
2124         mDidStopLoad = true;
2125         resetTitleAndRevertLockIcon();
2126         WebView w = getTopWindow();
2127         w.stopLoading();
2128         // FIXME: before refactor, it is using mWebViewClient. So I keep the
2129         // same logic here. But for subwindow case, should we call into the main
2130         // WebView's onPageFinished as we never call its onPageStarted and if
2131         // the page finishes itself, we don't call onPageFinished.
2132         mTabControl.getCurrentWebView().getWebViewClient().onPageFinished(w,
2133                 w.getUrl());
2134
2135         cancelStopToast();
2136         mStopToast = Toast
2137                 .makeText(this, R.string.stopping, Toast.LENGTH_SHORT);
2138         mStopToast.show();
2139     }
2140
2141     boolean didUserStopLoading() {
2142         return mDidStopLoad;
2143     }
2144
2145     private void cancelStopToast() {
2146         if (mStopToast != null) {
2147             mStopToast.cancel();
2148             mStopToast = null;
2149         }
2150     }
2151
2152     // called by a UI or non-UI thread to post the message
2153     public void postMessage(int what, int arg1, int arg2, Object obj,
2154             long delayMillis) {
2155         mHandler.sendMessageDelayed(mHandler.obtainMessage(what, arg1, arg2,
2156                 obj), delayMillis);
2157     }
2158
2159     // called by a UI or non-UI thread to remove the message
2160     void removeMessages(int what, Object object) {
2161         mHandler.removeMessages(what, object);
2162     }
2163
2164     // public message ids
2165     public final static int LOAD_URL                = 1001;
2166     public final static int STOP_LOAD               = 1002;
2167
2168     // Message Ids
2169     private static final int FOCUS_NODE_HREF         = 102;
2170     private static final int RELEASE_WAKELOCK        = 107;
2171
2172     static final int UPDATE_BOOKMARK_THUMBNAIL       = 108;
2173
2174     // Private handler for handling javascript and saving passwords
2175     private Handler mHandler = new Handler() {
2176
2177         public void handleMessage(Message msg) {
2178             switch (msg.what) {
2179                 case FOCUS_NODE_HREF:
2180                 {
2181                     String url = (String) msg.getData().get("url");
2182                     String title = (String) msg.getData().get("title");
2183                     if (url == null || url.length() == 0) {
2184                         break;
2185                     }
2186                     HashMap focusNodeMap = (HashMap) msg.obj;
2187                     WebView view = (WebView) focusNodeMap.get("webview");
2188                     // Only apply the action if the top window did not change.
2189                     if (getTopWindow() != view) {
2190                         break;
2191                     }
2192                     switch (msg.arg1) {
2193                         case R.id.open_context_menu_id:
2194                         case R.id.view_image_context_menu_id:
2195                             loadUrlFromContext(getTopWindow(), url);
2196                             break;
2197                         case R.id.open_newtab_context_menu_id:
2198                             final Tab parent = mTabControl.getCurrentTab();
2199                             final Tab newTab = openTab(url);
2200                             if (newTab != parent) {
2201                                 parent.addChildTab(newTab);
2202                             }
2203                             break;
2204                         case R.id.bookmark_context_menu_id:
2205                             Intent intent = new Intent(BrowserActivity.this,
2206                                     AddBookmarkPage.class);
2207                             intent.putExtra("url", url);
2208                             intent.putExtra("title", title);
2209                             startActivity(intent);
2210                             break;
2211                         case R.id.share_link_context_menu_id:
2212                             // See if this site has been visited before
2213                             StringBuilder sb = new StringBuilder(
2214                                     Browser.BookmarkColumns.URL + " = ");
2215                             DatabaseUtils.appendEscapedSQLString(sb, url);
2216                             Cursor c = mResolver.query(Browser.BOOKMARKS_URI,
2217                                     Browser.HISTORY_PROJECTION,
2218                                     sb.toString(),
2219                                     null,
2220                                     null);
2221                             if (c.moveToFirst()) {
2222                                 // The site has been visited before, so grab the
2223                                 // info from the database.
2224                                 Bitmap favicon = null;
2225                                 Bitmap thumbnail = null;
2226                                 String linkTitle = c.getString(Browser.
2227                                         HISTORY_PROJECTION_TITLE_INDEX);
2228                                 byte[] data = c.getBlob(Browser.
2229                                         HISTORY_PROJECTION_FAVICON_INDEX);
2230                                 if (data != null) {
2231                                     favicon = BitmapFactory.decodeByteArray(
2232                                             data, 0, data.length);
2233                                 }
2234                                 data = c.getBlob(Browser.
2235                                         HISTORY_PROJECTION_THUMBNAIL_INDEX);
2236                                 if (data != null) {
2237                                     thumbnail = BitmapFactory.decodeByteArray(
2238                                             data, 0, data.length);
2239                                 }
2240                                 sharePage(BrowserActivity.this,
2241                                         linkTitle, url, favicon, thumbnail);
2242                             } else {
2243                                 Browser.sendString(BrowserActivity.this, url,
2244                                         getString(
2245                                         R.string.choosertitle_sharevia));
2246                             }
2247                             break;
2248                         case R.id.copy_link_context_menu_id:
2249                             copy(url);
2250                             break;
2251                         case R.id.save_link_context_menu_id:
2252                         case R.id.download_context_menu_id:
2253                             onDownloadStartNoStream(url, null, null, null, -1);
2254                             break;
2255                     }
2256                     break;
2257                 }
2258
2259                 case LOAD_URL:
2260                     loadUrlFromContext(getTopWindow(), (String) msg.obj);
2261                     break;
2262
2263                 case STOP_LOAD:
2264                     stopLoading();
2265                     break;
2266
2267                 case RELEASE_WAKELOCK:
2268                     if (mWakeLock.isHeld()) {
2269                         mWakeLock.release();
2270                         // if we reach here, Browser should be still in the
2271                         // background loading after WAKELOCK_TIMEOUT (5-min).
2272                         // To avoid burning the battery, stop loading.
2273                         mTabControl.stopAllLoading();
2274                     }
2275                     break;
2276
2277                 case UPDATE_BOOKMARK_THUMBNAIL:
2278                     WebView view = (WebView) msg.obj;
2279                     if (view != null) {
2280                         updateScreenshot(view);
2281                     }
2282                     break;
2283             }
2284         }
2285     };
2286
2287     /**
2288      * Share a page, providing the title, url, favicon, and a screenshot.  Uses
2289      * an {@link Intent} to launch the Activity chooser.
2290      * @param c Context used to launch a new Activity.
2291      * @param title Title of the page.  Stored in the Intent with
2292      *          {@link Intent#EXTRA_SUBJECT}
2293      * @param url URL of the page.  Stored in the Intent with
2294      *          {@link Intent#EXTRA_TEXT}
2295      * @param favicon Bitmap of the favicon for the page.  Stored in the Intent
2296      *          with {@link Browser#EXTRA_SHARE_FAVICON}
2297      * @param screenshot Bitmap of a screenshot of the page.  Stored in the
2298      *          Intent with {@link Browser#EXTRA_SHARE_SCREENSHOT}
2299      */
2300     public static final void sharePage(Context c, String title, String url,
2301             Bitmap favicon, Bitmap screenshot) {
2302         Intent send = new Intent(Intent.ACTION_SEND);
2303         send.setType("text/plain");
2304         send.putExtra(Intent.EXTRA_TEXT, url);
2305         send.putExtra(Intent.EXTRA_SUBJECT, title);
2306         send.putExtra(Browser.EXTRA_SHARE_FAVICON, favicon);
2307         send.putExtra(Browser.EXTRA_SHARE_SCREENSHOT, screenshot);
2308         try {
2309             c.startActivity(Intent.createChooser(send, c.getString(
2310                     R.string.choosertitle_sharevia)));
2311         } catch(android.content.ActivityNotFoundException ex) {
2312             // if no app handles it, do nothing
2313         }
2314     }
2315
2316     private void updateScreenshot(WebView view) {
2317         // If this is a bookmarked site, add a screenshot to the database.
2318         // FIXME: When should we update?  Every time?
2319         // FIXME: Would like to make sure there is actually something to
2320         // draw, but the API for that (WebViewCore.pictureReady()) is not
2321         // currently accessible here.
2322
2323         ContentResolver cr = getContentResolver();
2324         final Cursor c = BrowserBookmarksAdapter.queryBookmarksForUrl(
2325                 cr, view.getOriginalUrl(), view.getUrl(), true);
2326         if (c != null) {
2327             boolean succeed = c.moveToFirst();
2328             ContentValues values = null;
2329             while (succeed) {
2330                 if (values == null) {
2331                     final ByteArrayOutputStream os
2332                             = new ByteArrayOutputStream();
2333                     Bitmap bm = createScreenshot(view);
2334                     if (bm == null) {
2335                         c.close();
2336                         return;
2337                     }
2338                     bm.compress(Bitmap.CompressFormat.PNG, 100, os);
2339                     values = new ContentValues();
2340                     values.put(Browser.BookmarkColumns.THUMBNAIL,
2341                             os.toByteArray());
2342                 }
2343                 cr.update(ContentUris.withAppendedId(Browser.BOOKMARKS_URI,
2344                         c.getInt(0)), values, null, null);
2345                 succeed = c.moveToNext();
2346             }
2347             c.close();
2348         }
2349     }
2350
2351     /**
2352      * Values for the size of the thumbnail created when taking a screenshot.
2353      * Lazily initialized.  Instead of using these directly, use
2354      * getDesiredThumbnailWidth() or getDesiredThumbnailHeight().
2355      */
2356     private static int THUMBNAIL_WIDTH = 0;
2357     private static int THUMBNAIL_HEIGHT = 0;
2358
2359     /**
2360      * Return the desired width for thumbnail screenshots, which are stored in
2361      * the database, and used on the bookmarks screen.
2362      * @param context Context for finding out the density of the screen.
2363      * @return int desired width for thumbnail screenshot.
2364      */
2365     /* package */ static int getDesiredThumbnailWidth(Context context) {
2366         if (THUMBNAIL_WIDTH == 0) {
2367             float density = context.getResources().getDisplayMetrics().density;
2368             THUMBNAIL_WIDTH = (int) (90 * density);
2369             THUMBNAIL_HEIGHT = (int) (80 * density);
2370         }
2371         return THUMBNAIL_WIDTH;
2372     }
2373
2374     /**
2375      * Return the desired height for thumbnail screenshots, which are stored in
2376      * the database, and used on the bookmarks screen.
2377      * @param context Context for finding out the density of the screen.
2378      * @return int desired height for thumbnail screenshot.
2379      */
2380     /* package */ static int getDesiredThumbnailHeight(Context context) {
2381         // To ensure that they are both initialized.
2382         getDesiredThumbnailWidth(context);
2383         return THUMBNAIL_HEIGHT;
2384     }
2385
2386     private Bitmap createScreenshot(WebView view) {
2387         Picture thumbnail = view.capturePicture();
2388         if (thumbnail == null) {
2389             return null;
2390         }
2391         Bitmap bm = Bitmap.createBitmap(getDesiredThumbnailWidth(this),
2392                 getDesiredThumbnailHeight(this), Bitmap.Config.ARGB_4444);
2393         Canvas canvas = new Canvas(bm);
2394         // May need to tweak these values to determine what is the
2395         // best scale factor
2396         int thumbnailWidth = thumbnail.getWidth();
2397         int thumbnailHeight = thumbnail.getHeight();
2398         float scaleFactorX = 1.0f;
2399         float scaleFactorY = 1.0f;
2400         if (thumbnailWidth > 0) {
2401             scaleFactorX = (float) getDesiredThumbnailWidth(this) /
2402                     (float)thumbnailWidth;
2403         } else {
2404             return null;
2405         }
2406
2407         if (view.getWidth() > view.getHeight() &&
2408                 thumbnailHeight < view.getHeight() && thumbnailHeight > 0) {
2409             // If the device is in landscape and the page is shorter
2410             // than the height of the view, stretch the thumbnail to fill the
2411             // space.
2412             scaleFactorY = (float) getDesiredThumbnailHeight(this) /
2413                     (float)thumbnailHeight;
2414         } else {
2415             // In the portrait case, this looks nice.
2416             scaleFactorY = scaleFactorX;
2417         }
2418
2419         canvas.scale(scaleFactorX, scaleFactorY);
2420
2421         thumbnail.draw(canvas);
2422         return bm;
2423     }
2424
2425     // -------------------------------------------------------------------------
2426     // Helper function for WebViewClient.
2427     //-------------------------------------------------------------------------
2428
2429     // Use in overrideUrlLoading
2430     /* package */ final static String SCHEME_WTAI = "wtai://wp/";
2431     /* package */ final static String SCHEME_WTAI_MC = "wtai://wp/mc;";
2432     /* package */ final static String SCHEME_WTAI_SD = "wtai://wp/sd;";
2433     /* package */ final static String SCHEME_WTAI_AP = "wtai://wp/ap;";
2434
2435     // Keep this initial progress in sync with initialProgressValue (* 100)
2436     // in ProgressTracker.cpp
2437     private final static int INITIAL_PROGRESS = 10;
2438
2439     void onPageStarted(WebView view, String url, Bitmap favicon) {
2440         // when BrowserActivity just starts, onPageStarted may be called before
2441         // onResume as it is triggered from onCreate. Call resumeWebViewTimers
2442         // to start the timer. As we won't switch tabs while an activity is in
2443         // pause state, we can ensure calling resume and pause in pair.
2444         if (mActivityInPause) resumeWebViewTimers();
2445
2446         resetLockIcon(url);
2447         setUrlTitle(url, null);
2448         setFavicon(favicon);
2449         // Show some progress so that the user knows the page is beginning to
2450         // load
2451         onProgressChanged(view, INITIAL_PROGRESS);
2452         mDidStopLoad = false;
2453         if (!mIsNetworkUp) createAndShowNetworkDialog();
2454
2455         if (mSettings.isTracing()) {
2456             String host;
2457             try {
2458                 WebAddress uri = new WebAddress(url);
2459                 host = uri.mHost;
2460             } catch (android.net.ParseException ex) {
2461                 host = "browser";
2462             }
2463             host = host.replace('.', '_');
2464             host += ".trace";
2465             mInTrace = true;
2466             Debug.startMethodTracing(host, 20 * 1024 * 1024);
2467         }
2468
2469         // Performance probe
2470         if (false) {
2471             mStart = SystemClock.uptimeMillis();
2472             mProcessStart = Process.getElapsedCpuTime();
2473             long[] sysCpu = new long[7];
2474             if (Process.readProcFile("/proc/stat", SYSTEM_CPU_FORMAT, null,
2475                     sysCpu, null)) {
2476                 mUserStart = sysCpu[0] + sysCpu[1];
2477                 mSystemStart = sysCpu[2];
2478                 mIdleStart = sysCpu[3];
2479                 mIrqStart = sysCpu[4] + sysCpu[5] + sysCpu[6];
2480             }
2481             mUiStart = SystemClock.currentThreadTimeMillis();
2482         }
2483     }
2484
2485     void onPageFinished(WebView view, String url) {
2486         // Reset the title and icon in case we stopped a provisional load.
2487         resetTitleAndIcon(view);
2488         // Update the lock icon image only once we are done loading
2489         updateLockIconToLatest();
2490         // pause the WebView timer and release the wake lock if it is finished
2491         // while BrowserActivity is in pause state.
2492         if (mActivityInPause && pauseWebViewTimers()) {
2493             if (mWakeLock.isHeld()) {
2494                 mHandler.removeMessages(RELEASE_WAKELOCK);
2495                 mWakeLock.release();
2496             }
2497         }
2498
2499         // Performance probe
2500         if (false) {
2501             long[] sysCpu = new long[7];
2502             if (Process.readProcFile("/proc/stat", SYSTEM_CPU_FORMAT, null,
2503                     sysCpu, null)) {
2504                 String uiInfo = "UI thread used "
2505                         + (SystemClock.currentThreadTimeMillis() - mUiStart)
2506                         + " ms";
2507                 if (LOGD_ENABLED) {
2508                     Log.d(LOGTAG, uiInfo);
2509                 }
2510                 //The string that gets written to the log
2511                 String performanceString = "It took total "
2512                         + (SystemClock.uptimeMillis() - mStart)
2513                         + " ms clock time to load the page."
2514                         + "\nbrowser process used "
2515                         + (Process.getElapsedCpuTime() - mProcessStart)
2516                         + " ms, user processes used "
2517                         + (sysCpu[0] + sysCpu[1] - mUserStart) * 10
2518                         + " ms, kernel used "
2519                         + (sysCpu[2] - mSystemStart) * 10
2520                         + " ms, idle took " + (sysCpu[3] - mIdleStart) * 10
2521                         + " ms and irq took "
2522                         + (sysCpu[4] + sysCpu[5] + sysCpu[6] - mIrqStart)
2523                         * 10 + " ms, " + uiInfo;
2524                 if (LOGD_ENABLED) {
2525                     Log.d(LOGTAG, performanceString + "\nWebpage: " + url);
2526                 }
2527                 if (url != null) {
2528                     // strip the url to maintain consistency
2529                     String newUrl = new String(url);
2530                     if (newUrl.startsWith("http://www.")) {
2531                         newUrl = newUrl.substring(11);
2532                     } else if (newUrl.startsWith("http://")) {
2533                         newUrl = newUrl.substring(7);
2534                     } else if (newUrl.startsWith("https://www.")) {
2535                         newUrl = newUrl.substring(12);
2536                     } else if (newUrl.startsWith("https://")) {
2537                         newUrl = newUrl.substring(8);
2538                     }
2539                     if (LOGD_ENABLED) {
2540                         Log.d(LOGTAG, newUrl + " loaded");
2541                     }
2542                 }
2543             }
2544          }
2545
2546         if (mInTrace) {
2547             mInTrace = false;
2548             Debug.stopMethodTracing();
2549         }
2550     }
2551
2552     boolean shouldOverrideUrlLoading(WebView view, String url) {
2553         if (url.startsWith(SCHEME_WTAI)) {
2554             // wtai://wp/mc;number
2555             // number=string(phone-number)
2556             if (url.startsWith(SCHEME_WTAI_MC)) {
2557                 Intent intent = new Intent(Intent.ACTION_VIEW,
2558                         Uri.parse(WebView.SCHEME_TEL +
2559                         url.substring(SCHEME_WTAI_MC.length())));
2560                 startActivity(intent);
2561                 return true;
2562             }
2563             // wtai://wp/sd;dtmf
2564             // dtmf=string(dialstring)
2565             if (url.startsWith(SCHEME_WTAI_SD)) {
2566                 // TODO: only send when there is active voice connection
2567                 return false;
2568             }
2569             // wtai://wp/ap;number;name
2570             // number=string(phone-number)
2571             // name=string
2572             if (url.startsWith(SCHEME_WTAI_AP)) {
2573                 // TODO
2574                 return false;
2575             }
2576         }
2577
2578         // The "about:" schemes are internal to the browser; don't want these to
2579         // be dispatched to other apps.
2580         if (url.startsWith("about:")) {
2581             return false;
2582         }
2583
2584         Intent intent;
2585         // perform generic parsing of the URI to turn it into an Intent.
2586         try {
2587             intent = Intent.parseUri(url, Intent.URI_INTENT_SCHEME);
2588         } catch (URISyntaxException ex) {
2589             Log.w("Browser", "Bad URI " + url + ": " + ex.getMessage());
2590             return false;
2591         }
2592
2593         // check whether the intent can be resolved. If not, we will see
2594         // whether we can download it from the Market.
2595         if (getPackageManager().resolveActivity(intent, 0) == null) {
2596             String packagename = intent.getPackage();
2597             if (packagename != null) {
2598                 intent = new Intent(Intent.ACTION_VIEW, Uri
2599                         .parse("market://search?q=pname:" + packagename));
2600                 intent.addCategory(Intent.CATEGORY_BROWSABLE);
2601                 startActivity(intent);
2602                 return true;
2603             } else {
2604                 return false;
2605             }
2606         }
2607
2608         // sanitize the Intent, ensuring web pages can not bypass browser
2609         // security (only access to BROWSABLE activities).
2610         intent.addCategory(Intent.CATEGORY_BROWSABLE);
2611         intent.setComponent(null);
2612         try {
2613             if (startActivityIfNeeded(intent, -1)) {
2614                 return true;
2615             }
2616         } catch (ActivityNotFoundException ex) {
2617             // ignore the error. If no application can handle the URL,
2618             // eg about:blank, assume the browser can handle it.
2619         }
2620
2621         if (mMenuIsDown) {
2622             openTab(url);
2623             closeOptionsMenu();
2624             return true;
2625         }
2626         return false;
2627     }
2628
2629     // -------------------------------------------------------------------------
2630     // Helper function for WebChromeClient
2631     // -------------------------------------------------------------------------
2632
2633     void onProgressChanged(WebView view, int newProgress) {
2634         mFakeTitleBar.setProgress(newProgress);
2635
2636         if (newProgress == 100) {
2637             // onProgressChanged() may continue to be called after the main
2638             // frame has finished loading, as any remaining sub frames continue
2639             // to load. We'll only get called once though with newProgress as
2640             // 100 when everything is loaded. (onPageFinished is called once
2641             // when the main frame completes loading regardless of the state of
2642             // any sub frames so calls to onProgressChanges may continue after
2643             // onPageFinished has executed)
2644             if (mInLoad) {
2645                 mInLoad = false;
2646                 updateInLoadMenuItems();
2647                 // If the options menu is open, leave the title bar
2648                 if (!mOptionsMenuOpen || !mIconView) {
2649                     hideFakeTitleBar();
2650                 }
2651             }
2652         } else {
2653             if (!mInLoad) {
2654                 // onPageFinished may have already been called but a subframe is
2655                 // still loading and updating the progress. Reset mInLoad and
2656                 // update the menu items.
2657                 mInLoad = true;
2658                 updateInLoadMenuItems();
2659             }
2660             // When the page first begins to load, the Activity may still be
2661             // paused, in which case showFakeTitleBar will do nothing.  Call
2662             // again as the page continues to load so that it will be shown.
2663             // (Calling it will the fake title bar is already showing will also
2664             // do nothing.
2665             if (!mOptionsMenuOpen || mIconView) {
2666                 // This page has begun to load, so show the title bar
2667                 showFakeTitleBar();
2668             }
2669         }
2670     }
2671
2672     void onShowCustomView(View view, WebChromeClient.CustomViewCallback callback) {
2673         // if a view already exists then immediately terminate the new one
2674         if (mCustomView != null) {
2675             callback.onCustomViewHidden();
2676             return;
2677         }
2678
2679         // Add the custom view to its container.
2680         mCustomViewContainer.addView(view, COVER_SCREEN_GRAVITY_CENTER);
2681         mCustomView = view;
2682         mCustomViewCallback = callback;
2683         // Save the menu state and set it to empty while the custom
2684         // view is showing.
2685         mOldMenuState = mMenuState;
2686         mMenuState = EMPTY_MENU;
2687         // Hide the content view.
2688         mContentView.setVisibility(View.GONE);
2689         // Finally show the custom view container.
2690         setStatusBarVisibility(false);
2691         mCustomViewContainer.setVisibility(View.VISIBLE);
2692         mCustomViewContainer.bringToFront();
2693     }
2694
2695     void onHideCustomView() {
2696         if (mCustomView == null)
2697             return;
2698
2699         // Hide the custom view.
2700         mCustomView.setVisibility(View.GONE);
2701         // Remove the custom view from its container.
2702         mCustomViewContainer.removeView(mCustomView);
2703         mCustomView = null;
2704         // Reset the old menu state.
2705         mMenuState = mOldMenuState;
2706         mOldMenuState = EMPTY_MENU;
2707         mCustomViewContainer.setVisibility(View.GONE);
2708         mCustomViewCallback.onCustomViewHidden();
2709         // Show the content view.
2710         setStatusBarVisibility(true);
2711         mContentView.setVisibility(View.VISIBLE);
2712     }
2713
2714     Bitmap getDefaultVideoPoster() {
2715         if (mDefaultVideoPoster == null) {
2716             mDefaultVideoPoster = BitmapFactory.decodeResource(
2717                     getResources(), R.drawable.default_video_poster);
2718         }
2719         return mDefaultVideoPoster;
2720     }
2721
2722     View getVideoLoadingProgressView() {
2723         if (mVideoProgressView == null) {
2724             LayoutInflater inflater = LayoutInflater.from(BrowserActivity.this);
2725             mVideoProgressView = inflater.inflate(
2726                     R.layout.video_loading_progress, null);
2727         }
2728         return mVideoProgressView;
2729     }
2730
2731     /*
2732      * The Object used to inform the WebView of the file to upload.
2733      */
2734     private ValueCallback<Uri> mUploadMessage;
2735
2736     void openFileChooser(ValueCallback<Uri> uploadMsg) {
2737         if (mUploadMessage != null) return;
2738         mUploadMessage = uploadMsg;
2739         Intent i = new Intent(Intent.ACTION_GET_CONTENT);
2740         i.addCategory(Intent.CATEGORY_OPENABLE);
2741         i.setType("*/*");
2742         BrowserActivity.this.startActivityForResult(Intent.createChooser(i,
2743                 getString(R.string.choose_upload)), FILE_SELECTED);
2744     }
2745
2746     // -------------------------------------------------------------------------
2747     // Implement functions for DownloadListener
2748     // -------------------------------------------------------------------------
2749
2750     /**
2751      * Notify the host application a download should be done, or that
2752      * the data should be streamed if a streaming viewer is available.
2753      * @param url The full url to the content that should be downloaded
2754      * @param contentDisposition Content-disposition http header, if
2755      *                           present.
2756      * @param mimetype The mimetype of the content reported by the server
2757      * @param contentLength The file size reported by the server
2758      */
2759     public void onDownloadStart(String url, String userAgent,
2760             String contentDisposition, String mimetype, long contentLength) {
2761         // if we're dealing wih A/V content that's not explicitly marked
2762         //     for download, check if it's streamable.
2763         if (contentDisposition == null
2764                 || !contentDisposition.regionMatches(
2765                         true, 0, "attachment", 0, 10)) {
2766             // query the package manager to see if there's a registered handler
2767             //     that matches.
2768             Intent intent = new Intent(Intent.ACTION_VIEW);
2769             intent.setDataAndType(Uri.parse(url), mimetype);
2770             ResolveInfo info = getPackageManager().resolveActivity(intent,
2771                     PackageManager.MATCH_DEFAULT_ONLY);
2772             if (info != null) {
2773                 ComponentName myName = getComponentName();
2774                 // If we resolved to ourselves, we don't want to attempt to
2775                 // load the url only to try and download it again.
2776                 if (!myName.getPackageName().equals(
2777                         info.activityInfo.packageName)
2778                         || !myName.getClassName().equals(
2779                                 info.activityInfo.name)) {
2780                     // someone (other than us) knows how to handle this mime
2781                     // type with this scheme, don't download.
2782                     try {
2783                         startActivity(intent);
2784                         return;
2785                     } catch (ActivityNotFoundException ex) {
2786                         if (LOGD_ENABLED) {
2787                             Log.d(LOGTAG, "activity not found for " + mimetype
2788                                     + " over " + Uri.parse(url).getScheme(),
2789                                     ex);
2790                         }
2791                         // Best behavior is to fall back to a download in this
2792                         // case
2793                     }
2794                 }
2795             }
2796         }
2797         onDownloadStartNoStream(url, userAgent, contentDisposition, mimetype, contentLength);
2798     }
2799
2800     // This is to work around the fact that java.net.URI throws Exceptions
2801     // instead of just encoding URL's properly
2802     // Helper method for onDownloadStartNoStream
2803     private static String encodePath(String path) {
2804         char[] chars = path.toCharArray();
2805
2806         boolean needed = false;
2807         for (char c : chars) {
2808             if (c == '[' || c == ']') {
2809                 needed = true;
2810                 break;
2811             }
2812         }
2813         if (needed == false) {
2814             return path;
2815         }
2816
2817         StringBuilder sb = new StringBuilder("");
2818         for (char c : chars) {
2819             if (c == '[' || c == ']') {
2820                 sb.append('%');
2821                 sb.append(Integer.toHexString(c));
2822             } else {
2823                 sb.append(c);
2824             }
2825         }
2826
2827         return sb.toString();
2828     }
2829
2830     /**
2831      * Notify the host application a download should be done, even if there
2832      * is a streaming viewer available for thise type.
2833      * @param url The full url to the content that should be downloaded
2834      * @param contentDisposition Content-disposition http header, if
2835      *                           present.
2836      * @param mimetype The mimetype of the content reported by the server
2837      * @param contentLength The file size reported by the server
2838      */
2839     /*package */ void onDownloadStartNoStream(String url, String userAgent,
2840             String contentDisposition, String mimetype, long contentLength) {
2841
2842         String filename = URLUtil.guessFileName(url,
2843                 contentDisposition, mimetype);
2844
2845         // Check to see if we have an SDCard
2846         String status = Environment.getExternalStorageState();
2847         if (!status.equals(Environment.MEDIA_MOUNTED)) {
2848             int title;
2849             String msg;
2850
2851             // Check to see if the SDCard is busy, same as the music app
2852             if (status.equals(Environment.MEDIA_SHARED)) {
2853                 msg = getString(R.string.download_sdcard_busy_dlg_msg);
2854                 title = R.string.download_sdcard_busy_dlg_title;
2855             } else {
2856                 msg = getString(R.string.download_no_sdcard_dlg_msg, filename);
2857                 title = R.string.download_no_sdcard_dlg_title;
2858             }
2859
2860             new AlertDialog.Builder(this)
2861                 .setTitle(title)
2862                 .setIcon(android.R.drawable.ic_dialog_alert)
2863                 .setMessage(msg)
2864                 .setPositiveButton(R.string.ok, null)
2865                 .show();
2866             return;
2867         }
2868
2869         // java.net.URI is a lot stricter than KURL so we have to encode some
2870         // extra characters. Fix for b 2538060 and b 1634719
2871         WebAddress webAddress;
2872         try {
2873             webAddress = new WebAddress(url);
2874             webAddress.mPath = encodePath(webAddress.mPath);
2875         } catch (Exception e) {
2876             // This only happens for very bad urls, we want to chatch the
2877             // exception here
2878             Log.e(LOGTAG, "Exception trying to parse url:" + url);
2879             return;
2880         }
2881
2882         // XXX: Have to use the old url since the cookies were stored using the
2883         // old percent-encoded url.
2884         String cookies = CookieManager.getInstance().getCookie(url);
2885
2886         ContentValues values = new ContentValues();
2887         values.put(Downloads.Impl.COLUMN_URI, webAddress.toString());
2888         values.put(Downloads.Impl.COLUMN_COOKIE_DATA, cookies);
2889         values.put(Downloads.Impl.COLUMN_USER_AGENT, userAgent);
2890         values.put(Downloads.Impl.COLUMN_NOTIFICATION_PACKAGE,
2891                 getPackageName());
2892         values.put(Downloads.Impl.COLUMN_NOTIFICATION_CLASS,
2893                 BrowserDownloadPage.class.getCanonicalName());
2894         values.put(Downloads.Impl.COLUMN_VISIBILITY,
2895                 Downloads.Impl.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
2896         values.put(Downloads.Impl.COLUMN_MIME_TYPE, mimetype);
2897         values.put(Downloads.Impl.COLUMN_FILE_NAME_HINT, filename);
2898         values.put(Downloads.Impl.COLUMN_DESCRIPTION, webAddress.mHost);
2899         if (contentLength > 0) {
2900             values.put(Downloads.Impl.COLUMN_TOTAL_BYTES, contentLength);
2901         }
2902         if (mimetype == null) {
2903             // We must have long pressed on a link or image to download it. We
2904             // are not sure of the mimetype in this case, so do a head request
2905             new FetchUrlMimeType(this).execute(values);
2906         } else {
2907             final Uri contentUri =
2908                     getContentResolver().insert(Downloads.Impl.CONTENT_URI, values);
2909         }
2910         Toast.makeText(this, R.string.download_pending, Toast.LENGTH_SHORT)
2911                 .show();
2912     }
2913
2914     // -------------------------------------------------------------------------
2915
2916     /**
2917      * Resets the lock icon. This method is called when we start a new load and
2918      * know the url to be loaded.
2919      */
2920     private void resetLockIcon(String url) {
2921         // Save the lock-icon state (we revert to it if the load gets cancelled)
2922         mTabControl.getCurrentTab().resetLockIcon(url);
2923         updateLockIconImage(LOCK_ICON_UNSECURE);
2924     }
2925
2926     /**
2927      * Update the lock icon to correspond to our latest state.
2928      */
2929     private void updateLockIconToLatest() {
2930         updateLockIconImage(mTabControl.getCurrentTab().getLockIconType());
2931     }
2932
2933     /**
2934      * Updates the lock-icon image in the title-bar.
2935      */
2936     private void updateLockIconImage(int lockIconType) {
2937         Drawable d = null;
2938         if (lockIconType == LOCK_ICON_SECURE) {
2939             d = mSecLockIcon;
2940         } else if (lockIconType == LOCK_ICON_MIXED) {
2941             d = mMixLockIcon;
2942         }
2943         mTitleBar.setLock(d);
2944         mFakeTitleBar.setLock(d);
2945     }
2946
2947     /**
2948      * Displays a page-info dialog.
2949      * @param tab The tab to show info about
2950      * @param fromShowSSLCertificateOnError The flag that indicates whether
2951      * this dialog was opened from the SSL-certificate-on-error dialog or
2952      * not. This is important, since we need to know whether to return to
2953      * the parent dialog or simply dismiss.
2954      */
2955     private void showPageInfo(final Tab tab,
2956                               final boolean fromShowSSLCertificateOnError) {
2957         final LayoutInflater factory = LayoutInflater
2958                 .from(this);
2959
2960         final View pageInfoView = factory.inflate(R.layout.page_info, null);
2961
2962         final WebView view = tab.getWebView();
2963
2964         String url = null;
2965         String title = null;
2966
2967         if (view == null) {
2968             url = tab.getUrl();
2969             title = tab.getTitle();
2970         } else if (view == mTabControl.getCurrentWebView()) {
2971              // Use the cached title and url if this is the current WebView
2972             url = mUrl;
2973             title = mTitle;
2974         } else {
2975             url = view.getUrl();
2976             title = view.getTitle();
2977         }
2978
2979         if (url == null) {
2980             url = "";
2981         }
2982         if (title == null) {
2983             title = "";
2984         }
2985
2986         ((TextView) pageInfoView.findViewById(R.id.address)).setText(url);
2987         ((TextView) pageInfoView.findViewById(R.id.title)).setText(title);
2988
2989         mPageInfoView = tab;
2990         mPageInfoFromShowSSLCertificateOnError = fromShowSSLCertificateOnError;
2991
2992         AlertDialog.Builder alertDialogBuilder =
2993             new AlertDialog.Builder(this)
2994             .setTitle(R.string.page_info).setIcon(android.R.drawable.ic_dialog_info)
2995             .setView(pageInfoView)
2996             .setPositiveButton(
2997                 R.string.ok,
2998                 new DialogInterface.OnClickListener() {
2999                     public void onClick(DialogInterface dialog,
3000                                         int whichButton) {
3001                         mPageInfoDialog = null;
3002                         mPageInfoView = null;
3003
3004                         // if we came here from the SSL error dialog
3005                         if (fromShowSSLCertificateOnError) {
3006                             // go back to the SSL error dialog
3007                             showSSLCertificateOnError(
3008                                 mSSLCertificateOnErrorView,
3009                                 mSSLCertificateOnErrorHandler,
3010                                 mSSLCertificateOnErrorError);
3011                         }
3012                     }
3013                 })
3014             .setOnCancelListener(
3015                 new DialogInterface.OnCancelListener() {
3016                     public void onCancel(DialogInterface dialog) {
3017                         mPageInfoDialog = null;
3018                         mPageInfoView = null;
3019
3020                         // if we came here from the SSL error dialog
3021                         if (fromShowSSLCertificateOnError) {
3022                             // go back to the SSL error dialog
3023                             showSSLCertificateOnError(
3024                                 mSSLCertificateOnErrorView,
3025                                 mSSLCertificateOnErrorHandler,
3026                                 mSSLCertificateOnErrorError);
3027                         }
3028                     }
3029                 });
3030
3031         // if we have a main top-level page SSL certificate set or a certificate
3032         // error
3033         if (fromShowSSLCertificateOnError ||
3034                 (view != null && view.getCertificate() != null)) {
3035             // add a 'View Certificate' button
3036             alertDialogBuilder.setNeutralButton(
3037                 R.string.view_certificate,
3038                 new DialogInterface.OnClickListener() {
3039                     public void onClick(DialogInterface dialog,
3040                                         int whichButton) {
3041                         mPageInfoDialog = null;
3042                         mPageInfoView = null;
3043
3044                         // if we came here from the SSL error dialog
3045                         if (fromShowSSLCertificateOnError) {
3046                             // go back to the SSL error dialog
3047                             showSSLCertificateOnError(
3048                                 mSSLCertificateOnErrorView,
3049                                 mSSLCertificateOnErrorHandler,
3050                                 mSSLCertificateOnErrorError);
3051                         } else {
3052                             // otherwise, display the top-most certificate from
3053                             // the chain
3054                             if (view.getCertificate() != null) {
3055                                 showSSLCertificate(tab);
3056                             }
3057                         }
3058                     }
3059                 });
3060         }
3061
3062         mPageInfoDialog = alertDialogBuilder.show();
3063     }
3064
3065        /**
3066      * Displays the main top-level page SSL certificate dialog
3067      * (accessible from the Page-Info dialog).
3068      * @param tab The tab to show certificate for.
3069      */
3070     private void showSSLCertificate(final Tab tab) {
3071         final View certificateView =
3072                 inflateCertificateView(tab.getWebView().getCertificate());
3073         if (certificateView == null) {
3074             return;
3075         }
3076
3077         LayoutInflater factory = LayoutInflater.from(this);
3078
3079         final LinearLayout placeholder =
3080                 (LinearLayout)certificateView.findViewById(R.id.placeholder);
3081
3082         LinearLayout ll = (LinearLayout) factory.inflate(
3083             R.layout.ssl_success, placeholder);
3084         ((TextView)ll.findViewById(R.id.success))
3085             .setText(R.string.ssl_certificate_is_valid);
3086
3087         mSSLCertificateView = tab;
3088         mSSLCertificateDialog =
3089             new AlertDialog.Builder(this)
3090                 .setTitle(R.string.ssl_certificate).setIcon(
3091                     R.drawable.ic_dialog_browser_certificate_secure)
3092                 .setView(certificateView)
3093                 .setPositiveButton(R.string.ok,
3094                         new DialogInterface.OnClickListener() {
3095                             public void onClick(DialogInterface dialog,
3096                                     int whichButton) {
3097                                 mSSLCertificateDialog = null;
3098                                 mSSLCertificateView = null;
3099
3100                                 showPageInfo(tab, false);
3101                             }
3102                         })
3103                 .setOnCancelListener(
3104                         new DialogInterface.OnCancelListener() {
3105                             public void onCancel(DialogInterface dialog) {
3106                                 mSSLCertificateDialog = null;
3107                                 mSSLCertificateView = null;
3108
3109                                 showPageInfo(tab, false);
3110                             }
3111                         })
3112                 .show();
3113     }
3114
3115     /**
3116      * Displays the SSL error certificate dialog.
3117      * @param view The target web-view.
3118      * @param handler The SSL error handler responsible for cancelling the
3119      * connection that resulted in an SSL error or proceeding per user request.
3120      * @param error The SSL error object.
3121      */
3122     void showSSLCertificateOnError(
3123         final WebView view, final SslErrorHandler handler, final SslError error) {
3124
3125         final View certificateView =
3126             inflateCertificateView(error.getCertificate());
3127         if (certificateView == null) {
3128             return;
3129         }
3130
3131         LayoutInflater factory = LayoutInflater.from(this);
3132
3133         final LinearLayout placeholder =
3134                 (LinearLayout)certificateView.findViewById(R.id.placeholder);
3135
3136         if (error.hasError(SslError.SSL_UNTRUSTED)) {
3137             LinearLayout ll = (LinearLayout)factory
3138                 .inflate(R.layout.ssl_warning, placeholder);
3139             ((TextView)ll.findViewById(R.id.warning))
3140                 .setText(R.string.ssl_untrusted);
3141         }
3142
3143         if (error.hasError(SslError.SSL_IDMISMATCH)) {
3144             LinearLayout ll = (LinearLayout)factory
3145                 .inflate(R.layout.ssl_warning, placeholder);
3146             ((TextView)ll.findViewById(R.id.warning))
3147                 .setText(R.string.ssl_mismatch);
3148         }
3149
3150         if (error.hasError(SslError.SSL_EXPIRED)) {
3151             LinearLayout ll = (LinearLayout)factory
3152                 .inflate(R.layout.ssl_warning, placeholder);
3153             ((TextView)ll.findViewById(R.id.warning))
3154                 .setText(R.string.ssl_expired);
3155         }
3156
3157         if (error.hasError(SslError.SSL_NOTYETVALID)) {
3158             LinearLayout ll = (LinearLayout)factory
3159                 .inflate(R.layout.ssl_warning, placeholder);
3160             ((TextView)ll.findViewById(R.id.warning))
3161                 .setText(R.string.ssl_not_yet_valid);
3162         }
3163
3164         mSSLCertificateOnErrorHandler = handler;
3165         mSSLCertificateOnErrorView = view;
3166         mSSLCertificateOnErrorError = error;
3167         mSSLCertificateOnErrorDialog =
3168             new AlertDialog.Builder(this)
3169                 .setTitle(R.string.ssl_certificate).setIcon(
3170                     R.drawable.ic_dialog_browser_certificate_partially_secure)
3171                 .setView(certificateView)
3172                 .setPositiveButton(R.string.ok,
3173                         new DialogInterface.OnClickListener() {
3174                             public void onClick(DialogInterface dialog,
3175                                     int whichButton) {
3176                                 mSSLCertificateOnErrorDialog = null;
3177                                 mSSLCertificateOnErrorView = null;
3178                                 mSSLCertificateOnErrorHandler = null;
3179                                 mSSLCertificateOnErrorError = null;
3180
3181                                 view.getWebViewClient().onReceivedSslError(
3182                                                 view, handler, error);
3183                             }
3184                         })
3185                  .setNeutralButton(R.string.page_info_view,
3186                         new DialogInterface.OnClickListener() {
3187                             public void onClick(DialogInterface dialog,
3188                                     int whichButton) {
3189                                 mSSLCertificateOnErrorDialog = null;
3190
3191                                 // do not clear the dialog state: we will
3192                                 // need to show the dialog again once the
3193                                 // user is done exploring the page-info details
3194
3195                                 showPageInfo(mTabControl.getTabFromView(view),
3196                                         true);
3197                             }
3198                         })
3199                 .setOnCancelListener(
3200                         new DialogInterface.OnCancelListener() {
3201                             public void onCancel(DialogInterface dialog) {
3202                                 mSSLCertificateOnErrorDialog = null;
3203                                 mSSLCertificateOnErrorView = null;
3204                                 mSSLCertificateOnErrorHandler = null;
3205                                 mSSLCertificateOnErrorError = null;
3206
3207                                 view.getWebViewClient().onReceivedSslError(
3208                                                 view, handler, error);
3209                             }
3210                         })
3211                 .show();
3212     }
3213
3214     /**
3215      * Inflates the SSL certificate view (helper method).
3216      * @param certificate The SSL certificate.
3217      * @return The resultant certificate view with issued-to, issued-by,
3218      * issued-on, expires-on, and possibly other fields set.
3219      * If the input certificate is null, returns null.
3220      */
3221     private View inflateCertificateView(SslCertificate certificate) {
3222         if (certificate == null) {
3223             return null;
3224         }
3225
3226         LayoutInflater factory = LayoutInflater.from(this);
3227
3228         View certificateView = factory.inflate(
3229             R.layout.ssl_certificate, null);
3230
3231         // issued to:
3232         SslCertificate.DName issuedTo = certificate.getIssuedTo();
3233         if (issuedTo != null) {
3234             ((TextView) certificateView.findViewById(R.id.to_common))
3235                 .setText(issuedTo.getCName());
3236             ((TextView) certificateView.findViewById(R.id.to_org))
3237                 .setText(issuedTo.getOName());
3238             ((TextView) certificateView.findViewById(R.id.to_org_unit))
3239                 .setText(issuedTo.getUName());
3240         }
3241
3242         // issued by:
3243         SslCertificate.DName issuedBy = certificate.getIssuedBy();
3244         if (issuedBy != null) {
3245             ((TextView) certificateView.findViewById(R.id.by_common))
3246                 .setText(issuedBy.getCName());
3247             ((TextView) certificateView.findViewById(R.id.by_org))
3248                 .setText(issuedBy.getOName());
3249             ((TextView) certificateView.findViewById(R.id.by_org_unit))
3250                 .setText(issuedBy.getUName());
3251         }
3252
3253         // issued on:
3254         String issuedOn = formatCertificateDate(
3255             certificate.getValidNotBeforeDate());
3256         ((TextView) certificateView.findViewById(R.id.issued_on))
3257             .setText(issuedOn);
3258
3259         // expires on:
3260         String expiresOn = formatCertificateDate(
3261             certificate.getValidNotAfterDate());
3262         ((TextView) certificateView.findViewById(R.id.expires_on))
3263             .setText(expiresOn);
3264
3265         return certificateView;
3266     }
3267
3268     /**
3269      * Formats the certificate date to a properly localized date string.
3270      * @return Properly localized version of the certificate date string and
3271      * the "" if it fails to localize.
3272      */
3273     private String formatCertificateDate(Date certificateDate) {
3274       if (certificateDate == null) {
3275           return "";
3276       }
3277       String formattedDate = DateFormat.getDateFormat(this).format(certificateDate);
3278       if (formattedDate == null) {
3279           return "";
3280       }
3281       return formattedDate;
3282     }
3283
3284     /**
3285      * Displays an http-authentication dialog.
3286      */
3287     void showHttpAuthentication(final HttpAuthHandler handler,
3288             final String host, final String realm, final String title,
3289             final String name, final String password, int focusId) {
3290         LayoutInflater factory = LayoutInflater.from(this);
3291         final View v = factory
3292                 .inflate(R.layout.http_authentication, null);
3293         if (name != null) {
3294             ((EditText) v.findViewById(R.id.username_edit)).setText(name);
3295         }
3296         if (password != null) {
3297             ((EditText) v.findViewById(R.id.password_edit)).setText(password);
3298         }
3299
3300         String titleText = title;
3301         if (titleText == null) {
3302             titleText = getText(R.string.sign_in_to).toString().replace(
3303                     "%s1", host).replace("%s2", realm);
3304         }
3305
3306         mHttpAuthHandler = handler;
3307         AlertDialog dialog = new AlertDialog.Builder(this)
3308                 .setTitle(titleText)
3309                 .setIcon(android.R.drawable.ic_dialog_alert)
3310                 .setView(v)
3311                 .setPositiveButton(R.string.action,
3312                         new DialogInterface.OnClickListener() {
3313                              public void onClick(DialogInterface dialog,
3314                                      int whichButton) {
3315                                 String nm = ((EditText) v
3316                                         .findViewById(R.id.username_edit))
3317                                         .getText().toString();
3318                                 String pw = ((EditText) v
3319                                         .findViewById(R.id.password_edit))
3320                                         .getText().toString();
3321                                 BrowserActivity.this.setHttpAuthUsernamePassword
3322                                         (host, realm, nm, pw);
3323                                 handler.proceed(nm, pw);
3324                                 mHttpAuthenticationDialog = null;
3325                                 mHttpAuthHandler = null;
3326                             }})
3327                 .setNegativeButton(R.string.cancel,
3328                         new DialogInterface.OnClickListener() {
3329                             public void onClick(DialogInterface dialog,
3330                                     int whichButton) {
3331                                 handler.cancel();
3332                                 BrowserActivity.this.resetTitleAndRevertLockIcon();
3333                                 mHttpAuthenticationDialog = null;
3334                                 mHttpAuthHandler = null;
3335                             }})
3336                 .setOnCancelListener(new DialogInterface.OnCancelListener() {
3337                         public void onCancel(DialogInterface dialog) {
3338                             handler.cancel();
3339                             BrowserActivity.this.resetTitleAndRevertLockIcon();
3340                             mHttpAuthenticationDialog = null;
3341                             mHttpAuthHandler = null;
3342                         }})
3343                 .create();
3344         // Make the IME appear when the dialog is displayed if applicable.
3345         dialog.getWindow().setSoftInputMode(
3346                 WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
3347         dialog.show();
3348         if (focusId != 0) {
3349             dialog.findViewById(focusId).requestFocus();
3350         } else {
3351             v.findViewById(R.id.username_edit).requestFocus();
3352         }
3353         mHttpAuthenticationDialog = dialog;
3354     }
3355
3356     public int getProgress() {
3357         WebView w = mTabControl.getCurrentWebView();
3358         if (w != null) {
3359             return w.getProgress();
3360         } else {
3361             return 100;
3362         }
3363     }
3364
3365     /**
3366      * Set HTTP authentication password.
3367      *
3368      * @param host The host for the password
3369      * @param realm The realm for the password
3370      * @param username The username for the password. If it is null, it means
3371      *            password can't be saved.
3372      * @param password The password
3373      */
3374     public void setHttpAuthUsernamePassword(String host, String realm,
3375                                             String username,
3376                                             String password) {
3377         WebView w = getTopWindow();
3378         if (w != null) {
3379             w.setHttpAuthUsernamePassword(host, realm, username, password);
3380         }
3381     }
3382
3383     /**
3384      * connectivity manager says net has come or gone... inform the user
3385      * @param up true if net has come up, false if net has gone down
3386      */
3387     public void onNetworkToggle(boolean up) {
3388         if (up == mIsNetworkUp) {
3389             return;
3390         } else if (up) {
3391             mIsNetworkUp = true;
3392             if (mAlertDialog != null) {
3393                 mAlertDialog.cancel();
3394                 mAlertDialog = null;
3395             }
3396         } else {
3397             mIsNetworkUp = false;
3398             if (mInLoad) {
3399                 createAndShowNetworkDialog();
3400            }
3401         }
3402         WebView w = mTabControl.getCurrentWebView();
3403         if (w != null) {
3404             w.setNetworkAvailable(up);
3405         }
3406     }
3407
3408     boolean isNetworkUp() {
3409         return mIsNetworkUp;
3410     }
3411
3412     // This method shows the network dialog alerting the user that the net is
3413     // down. It will only show the dialog if mAlertDialog is null.
3414     private void createAndShowNetworkDialog() {
3415         if (mAlertDialog == null) {
3416             mAlertDialog = new AlertDialog.Builder(this)
3417                     .setTitle(R.string.loadSuspendedTitle)
3418                     .setMessage(R.string.loadSuspended)
3419                     .setPositiveButton(R.string.ok, null)
3420                     .show();
3421         }
3422     }
3423
3424     @Override
3425     protected void onActivityResult(int requestCode, int resultCode,
3426                                     Intent intent) {
3427         if (getTopWindow() == null) return;
3428
3429         switch (requestCode) {
3430             case COMBO_PAGE:
3431                 if (resultCode == RESULT_OK && intent != null) {
3432                     String data = intent.getAction();
3433                     Bundle extras = intent.getExtras();
3434                     if (extras != null && extras.getBoolean("new_window", false)) {
3435                         openTab(data);
3436                     } else {
3437                         final Tab currentTab =
3438                                 mTabControl.getCurrentTab();
3439                         dismissSubWindow(currentTab);
3440                         if (data != null && data.length() != 0) {
3441                             loadUrl(getTopWindow(), data);
3442                         }
3443                     }
3444                 }
3445                 // Deliberately fall through to PREFERENCES_PAGE, since the
3446                 // same extra may be attached to the COMBO_PAGE
3447             case PREFERENCES_PAGE:
3448                 if (resultCode == RESULT_OK && intent != null) {
3449                     String action = intent.getStringExtra(Intent.EXTRA_TEXT);
3450                     if (BrowserSettings.PREF_CLEAR_HISTORY.equals(action)) {
3451                         mTabControl.removeParentChildRelationShips();
3452                     }
3453                 }
3454                 break;
3455             // Choose a file from the file picker.
3456             case FILE_SELECTED:
3457                 if (null == mUploadMessage) break;
3458                 Uri result = intent == null || resultCode != RESULT_OK ? null
3459                         : intent.getData();
3460                 mUploadMessage.onReceiveValue(result);
3461                 mUploadMessage = null;
3462                 break;
3463             default:
3464                 break;
3465         }
3466         getTopWindow().requestFocus();
3467     }
3468
3469     /*
3470      * This method is called as a result of the user selecting the options
3471      * menu to see the download window. It shows the download window on top of
3472      * the current window.
3473      */
3474     private void viewDownloads(Uri downloadRecord) {
3475         Intent intent = new Intent(this,
3476                 BrowserDownloadPage.class);
3477         intent.setData(downloadRecord);
3478         startActivityForResult(intent, BrowserActivity.DOWNLOAD_PAGE);
3479
3480     }
3481
3482     /**
3483      * Open the Go page.
3484      * @param startWithHistory If true, open starting on the history tab.
3485      *                         Otherwise, start with the bookmarks tab.
3486      */
3487     /* package */ void bookmarksOrHistoryPicker(boolean startWithHistory) {
3488         WebView current = mTabControl.getCurrentWebView();
3489         if (current == null) {
3490             return;
3491         }
3492         Intent intent = new Intent(this,
3493                 CombinedBookmarkHistoryActivity.class);
3494         String title = current.getTitle();
3495         String url = current.getUrl();
3496         Bitmap thumbnail = createScreenshot(current);
3497
3498         // Just in case the user opens bookmarks before a page finishes loading
3499         // so the current history item, and therefore the page, is null.
3500         if (null == url) {
3501             url = mLastEnteredUrl;
3502             // This can happen.
3503             if (null == url) {
3504                 url = mSettings.getHomePage();
3505             }
3506         }
3507         // In case the web page has not yet received its associated title.
3508         if (title == null) {
3509             title = url;
3510         }
3511         intent.putExtra("title", title);
3512         intent.putExtra("url", url);
3513         intent.putExtra("thumbnail", thumbnail);
3514         // Disable opening in a new window if we have maxed out the windows
3515         intent.putExtra("disable_new_window", !mTabControl.canCreateNewTab());
3516         intent.putExtra("touch_icon_url", current.getTouchIconUrl());
3517         if (startWithHistory) {
3518             intent.putExtra(CombinedBookmarkHistoryActivity.STARTING_TAB,
3519                     CombinedBookmarkHistoryActivity.HISTORY_TAB);
3520         }
3521         startActivityForResult(intent, COMBO_PAGE);
3522     }
3523
3524     // Called when loading from context menu or LOAD_URL message
3525     private void loadUrlFromContext(WebView view, String url) {
3526         // In case the user enters nothing.
3527         if (url != null && url.length() != 0 && view != null) {
3528             url = smartUrlFilter(url);
3529             if (!view.getWebViewClient().shouldOverrideUrlLoading(view, url)) {
3530                 loadUrl(view, url);
3531             }
3532         }
3533     }
3534
3535     /**
3536      * Load the URL into the given WebView and update the title bar
3537      * to reflect the new load.  Call this instead of WebView.loadUrl
3538      * directly.
3539      * @param view The WebView used to load url.
3540      * @param url The URL to load.
3541      */
3542     private void loadUrl(WebView view, String url) {
3543         updateTitleBarForNewLoad(view, url);
3544         view.loadUrl(url);
3545     }
3546
3547     /**
3548      * Load UrlData into a Tab and update the title bar to reflect the new
3549      * load.  Call this instead of UrlData.loadIn directly.
3550      * @param t The Tab used to load.
3551      * @param data The UrlData being loaded.
3552      */
3553     private void loadUrlDataIn(Tab t, UrlData data) {
3554         updateTitleBarForNewLoad(t.getWebView(), data.mUrl);
3555         data.loadIn(t);
3556     }
3557
3558     /**
3559      * If the WebView is the top window, update the title bar to reflect
3560      * loading the new URL.  i.e. set its text, clear the favicon (which
3561      * will be set once the page begins loading), and set the progress to
3562      * INITIAL_PROGRESS to show that the page has begun to load. Called
3563      * by loadUrl and loadUrlDataIn.
3564      * @param view The WebView that is starting a load.
3565      * @param url The URL that is being loaded.
3566      */
3567     private void updateTitleBarForNewLoad(WebView view, String url) {
3568         if (view == getTopWindow()) {
3569             setUrlTitle(url, null);
3570             setFavicon(null);
3571             onProgressChanged(view, INITIAL_PROGRESS);
3572         }
3573     }
3574
3575     private String smartUrlFilter(Uri inUri) {
3576         if (inUri != null) {
3577             return smartUrlFilter(inUri.toString());
3578         }
3579         return null;
3580     }
3581
3582     protected static final Pattern ACCEPTED_URI_SCHEMA = Pattern.compile(
3583             "(?i)" + // switch on case insensitive matching
3584             "(" +    // begin group for schema
3585             "(?:http|https|file):\\/\\/" +
3586             "|(?:inline|data|about|content|javascript):" +
3587             ")" +
3588             "(.*)" );
3589
3590     /**
3591      * Attempts to determine whether user input is a URL or search
3592      * terms.  Anything with a space is passed to search.
3593      *
3594      * Converts to lowercase any mistakenly uppercased schema (i.e.,
3595      * "Http://" converts to "http://"
3596      *
3597      * @return Original or modified URL
3598      *
3599      */
3600     String smartUrlFilter(String url) {
3601
3602         String inUrl = url.trim();
3603         boolean hasSpace = inUrl.indexOf(' ') != -1;
3604
3605         Matcher matcher = ACCEPTED_URI_SCHEMA.matcher(inUrl);
3606         if (matcher.matches()) {
3607             // force scheme to lowercase
3608             String scheme = matcher.group(1);
3609             String lcScheme = scheme.toLowerCase();
3610             if (!lcScheme.equals(scheme)) {
3611                 inUrl = lcScheme + matcher.group(2);
3612             }
3613             if (hasSpace) {
3614                 inUrl = inUrl.replace(" ", "%20");
3615             }
3616             return inUrl;
3617         }
3618         if (hasSpace) {
3619             // FIXME: Is this the correct place to add to searches?
3620             // what if someone else calls this function?
3621             int shortcut = parseUrlShortcut(inUrl);
3622             if (shortcut != SHORTCUT_INVALID) {
3623                 Browser.addSearchUrl(mResolver, inUrl);
3624                 String query = inUrl.substring(2);
3625                 switch (shortcut) {
3626                 case SHORTCUT_GOOGLE_SEARCH:
3627                     return URLUtil.composeSearchUrl(query, QuickSearch_G, QUERY_PLACE_HOLDER);
3628                 case SHORTCUT_WIKIPEDIA_SEARCH:
3629                     return URLUtil.composeSearchUrl(query, QuickSearch_W, QUERY_PLACE_HOLDER);
3630                 case SHORTCUT_DICTIONARY_SEARCH:
3631                     return URLUtil.composeSearchUrl(query, QuickSearch_D, QUERY_PLACE_HOLDER);
3632                 case SHORTCUT_GOOGLE_MOBILE_LOCAL_SEARCH:
3633                     // FIXME: we need location in this case
3634                     return URLUtil.composeSearchUrl(query, QuickSearch_L, QUERY_PLACE_HOLDER);
3635                 }
3636             }
3637         } else {
3638             if (Patterns.WEB_URL.matcher(inUrl).matches()) {
3639                 return URLUtil.guessUrl(inUrl);
3640             }
3641         }
3642
3643         Browser.addSearchUrl(mResolver, inUrl);
3644         return URLUtil.composeSearchUrl(inUrl, QuickSearch_G, QUERY_PLACE_HOLDER);
3645     }
3646
3647     /* package */ void setShouldShowErrorConsole(boolean flag) {
3648         if (flag == mShouldShowErrorConsole) {
3649             // Nothing to do.
3650             return;
3651         }
3652
3653         mShouldShowErrorConsole = flag;
3654
3655         ErrorConsoleView errorConsole = mTabControl.getCurrentTab()
3656                 .getErrorConsole(true);
3657
3658         if (flag) {
3659             // Setting the show state of the console will cause it's the layout to be inflated.
3660             if (errorConsole.numberOfErrors() > 0) {
3661                 errorConsole.showConsole(ErrorConsoleView.SHOW_MINIMIZED);
3662             } else {
3663                 errorConsole.showConsole(ErrorConsoleView.SHOW_NONE);
3664             }
3665
3666             // Now we can add it to the main view.
3667             mErrorConsoleContainer.addView(errorConsole,
3668                     new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
3669                                                   ViewGroup.LayoutParams.WRAP_CONTENT));
3670         } else {
3671             mErrorConsoleContainer.removeView(errorConsole);
3672         }
3673
3674     }
3675
3676     boolean shouldShowErrorConsole() {
3677         return mShouldShowErrorConsole;
3678     }
3679
3680     private void setStatusBarVisibility(boolean visible) {
3681         int flag = visible ? 0 : WindowManager.LayoutParams.FLAG_FULLSCREEN;
3682         getWindow().setFlags(flag, WindowManager.LayoutParams.FLAG_FULLSCREEN);
3683     }
3684
3685
3686     private void sendNetworkType(String type, String subtype) {
3687         WebView w = mTabControl.getCurrentWebView();
3688         if (w != null) {
3689             w.setNetworkType(type, subtype);
3690         }
3691     }
3692
3693     private void packageChanged(String packageName, boolean wasAdded) {
3694         WebView w = mTabControl.getCurrentWebView();
3695         if (w == null) {
3696             return;
3697         }
3698
3699         if (wasAdded) {
3700             w.addPackageName(packageName);
3701         } else {
3702             w.removePackageName(packageName);
3703         }
3704     }
3705
3706     private void addPackageNames(Set<String> packageNames) {
3707         WebView w = mTabControl.getCurrentWebView();
3708         if (w == null) {
3709             return;
3710         }
3711
3712         w.addPackageNames(packageNames);
3713     }
3714
3715     private void getInstalledPackages() {
3716         AsyncTask<Void, Void, Set<String> > task =
3717             new AsyncTask<Void, Void, Set<String> >() {
3718             protected Set<String> doInBackground(Void... unused) {
3719                 Set<String> installedPackages = new HashSet<String>();
3720                 PackageManager pm = BrowserActivity.this.getPackageManager();
3721                 if (pm != null) {
3722                     List<PackageInfo> packages = pm.getInstalledPackages(0);
3723                     for (PackageInfo p : packages) {
3724                         if (BrowserActivity.this.sGoogleApps.contains(p.packageName)) {
3725                             installedPackages.add(p.packageName);
3726                         }
3727                     }
3728                 }
3729
3730                 return installedPackages;
3731             }
3732
3733             // Executes on the UI thread
3734             protected void onPostExecute(Set<String> installedPackages) {
3735                 addPackageNames(installedPackages);
3736             }
3737         };
3738         task.execute();
3739     }
3740
3741     final static int LOCK_ICON_UNSECURE = 0;
3742     final static int LOCK_ICON_SECURE   = 1;
3743     final static int LOCK_ICON_MIXED    = 2;
3744
3745     private BrowserSettings mSettings;
3746     private TabControl      mTabControl;
3747     private ContentResolver mResolver;
3748     private FrameLayout     mContentView;
3749     private View            mCustomView;
3750     private FrameLayout     mCustomViewContainer;
3751     private WebChromeClient.CustomViewCallback mCustomViewCallback;
3752
3753     // FIXME, temp address onPrepareMenu performance problem. When we move everything out of
3754     // view, we should rewrite this.
3755     private int mCurrentMenuState = 0;
3756     private int mMenuState = R.id.MAIN_MENU;
3757     private int mOldMenuState = EMPTY_MENU;
3758     private static final int EMPTY_MENU = -1;
3759     private Menu mMenu;
3760
3761     private FindDialog mFindDialog;
3762     // Used to prevent chording to result in firing two shortcuts immediately
3763     // one after another.  Fixes bug 1211714.
3764     boolean mCanChord;
3765
3766     private boolean mInLoad;
3767     private boolean mIsNetworkUp;
3768     private boolean mDidStopLoad;
3769
3770     /* package */ boolean mActivityInPause = true;
3771
3772     private boolean mMenuIsDown;
3773
3774     private static boolean mInTrace;
3775
3776     // Performance probe
3777     private static final int[] SYSTEM_CPU_FORMAT = new int[] {
3778             Process.PROC_SPACE_TERM | Process.PROC_COMBINE,
3779             Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG, // 1: user time
3780             Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG, // 2: nice time
3781             Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG, // 3: sys time
3782             Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG, // 4: idle time
3783             Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG, // 5: iowait time
3784             Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG, // 6: irq time
3785             Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG  // 7: softirq time
3786     };
3787
3788     private long mStart;
3789     private long mProcessStart;
3790     private long mUserStart;
3791     private long mSystemStart;
3792     private long mIdleStart;
3793     private long mIrqStart;
3794
3795     private long mUiStart;
3796
3797     private Drawable    mMixLockIcon;
3798     private Drawable    mSecLockIcon;
3799
3800     /* hold a ref so we can auto-cancel if necessary */
3801     private AlertDialog mAlertDialog;
3802
3803     // The up-to-date URL and title (these can be different from those stored
3804     // in WebView, since it takes some time for the information in WebView to
3805     // get updated)
3806     private String mUrl;
3807     private String mTitle;
3808
3809     // As PageInfo has different style for landscape / portrait, we have
3810     // to re-open it when configuration changed
3811     private AlertDialog mPageInfoDialog;
3812     private Tab mPageInfoView;
3813     // If the Page-Info dialog is launched from the SSL-certificate-on-error
3814     // dialog, we should not just dismiss it, but should get back to the
3815     // SSL-certificate-on-error dialog. This flag is used to store this state
3816     private boolean mPageInfoFromShowSSLCertificateOnError;
3817
3818     // as SSLCertificateOnError has different style for landscape / portrait,
3819     // we have to re-open it when configuration changed
3820     private AlertDialog mSSLCertificateOnErrorDialog;
3821     private WebView mSSLCertificateOnErrorView;
3822     private SslErrorHandler mSSLCertificateOnErrorHandler;
3823     private SslError mSSLCertificateOnErrorError;
3824
3825     // as SSLCertificate has different style for landscape / portrait, we
3826     // have to re-open it when configuration changed
3827     private AlertDialog mSSLCertificateDialog;
3828     private Tab mSSLCertificateView;
3829
3830     // as HttpAuthentication has different style for landscape / portrait, we
3831     // have to re-open it when configuration changed
3832     private AlertDialog mHttpAuthenticationDialog;
3833     private HttpAuthHandler mHttpAuthHandler;
3834
3835     /*package*/ static final FrameLayout.LayoutParams COVER_SCREEN_PARAMS =
3836                                             new FrameLayout.LayoutParams(
3837                                             ViewGroup.LayoutParams.MATCH_PARENT,
3838                                             ViewGroup.LayoutParams.MATCH_PARENT);
3839     /*package*/ static final FrameLayout.LayoutParams COVER_SCREEN_GRAVITY_CENTER =
3840                                             new FrameLayout.LayoutParams(
3841                                             ViewGroup.LayoutParams.MATCH_PARENT,
3842                                             ViewGroup.LayoutParams.MATCH_PARENT,
3843                                             Gravity.CENTER);
3844     // Google search
3845     final static String QuickSearch_G = "http://www.google.com/m?q=%s";
3846     // Wikipedia search
3847     final static String QuickSearch_W = "http://en.wikipedia.org/w/index.php?search=%s&go=Go";
3848     // Dictionary search
3849     final static String QuickSearch_D = "http://dictionary.reference.com/search?q=%s";
3850     // Google Mobile Local search
3851     final static String QuickSearch_L = "http://www.google.com/m/search?site=local&q=%s&near=mountain+view";
3852
3853     final static String QUERY_PLACE_HOLDER = "%s";
3854
3855     // "source" parameter for Google search through search key
3856     final static String GOOGLE_SEARCH_SOURCE_SEARCHKEY = "browser-key";
3857     // "source" parameter for Google search through goto menu
3858     final static String GOOGLE_SEARCH_SOURCE_GOTO = "browser-goto";
3859     // "source" parameter for Google search through simplily type
3860     final static String GOOGLE_SEARCH_SOURCE_TYPE = "browser-type";
3861     // "source" parameter for Google search suggested by the browser
3862     final static String GOOGLE_SEARCH_SOURCE_SUGGEST = "browser-suggest";
3863     // "source" parameter for Google search from unknown source
3864     final static String GOOGLE_SEARCH_SOURCE_UNKNOWN = "unknown";
3865
3866     private final static String LOGTAG = "browser";
3867
3868     private String mLastEnteredUrl;
3869
3870     private PowerManager.WakeLock mWakeLock;
3871     private final static int WAKELOCK_TIMEOUT = 5 * 60 * 1000; // 5 minutes
3872
3873     private Toast mStopToast;
3874
3875     private TitleBar mTitleBar;
3876
3877     private LinearLayout mErrorConsoleContainer = null;
3878     private boolean mShouldShowErrorConsole = false;
3879
3880     // As the ids are dynamically created, we can't guarantee that they will
3881     // be in sequence, so this static array maps ids to a window number.
3882     final static private int[] WINDOW_SHORTCUT_ID_ARRAY =
3883     { R.id.window_one_menu_id, R.id.window_two_menu_id, R.id.window_three_menu_id,
3884       R.id.window_four_menu_id, R.id.window_five_menu_id, R.id.window_six_menu_id,
3885       R.id.window_seven_menu_id, R.id.window_eight_menu_id };
3886
3887     // monitor platform changes
3888     private IntentFilter mNetworkStateChangedFilter;
3889     private BroadcastReceiver mNetworkStateIntentReceiver;
3890
3891     private BroadcastReceiver mPackageInstallationReceiver;
3892
3893     private SystemAllowGeolocationOrigins mSystemAllowGeolocationOrigins;
3894
3895     // activity requestCode
3896     final static int COMBO_PAGE                 = 1;
3897     final static int DOWNLOAD_PAGE              = 2;
3898     final static int PREFERENCES_PAGE           = 3;
3899     final static int FILE_SELECTED              = 4;
3900
3901     // the default <video> poster
3902     private Bitmap mDefaultVideoPoster;
3903     // the video progress view
3904     private View mVideoProgressView;
3905
3906     // The Google packages we monitor for the navigator.isApplicationInstalled()
3907     // API. Add as needed.
3908     private static Set<String> sGoogleApps;
3909     static {
3910         sGoogleApps = new HashSet<String>();
3911         sGoogleApps.add("com.google.android.youtube");
3912     }
3913
3914     /**
3915      * A UrlData class to abstract how the content will be set to WebView.
3916      * This base class uses loadUrl to show the content.
3917      */
3918     /* package */ static class UrlData {
3919         final String mUrl;
3920         final Map<String, String> mHeaders;
3921         final Intent mVoiceIntent;
3922
3923         UrlData(String url) {
3924             this.mUrl = url;
3925             this.mHeaders = null;
3926             this.mVoiceIntent = null;
3927         }
3928
3929         UrlData(String url, Map<String, String> headers, Intent intent) {
3930             this.mUrl = url;
3931             this.mHeaders = headers;
3932             if (RecognizerResultsIntent.ACTION_VOICE_SEARCH_RESULTS
3933                     .equals(intent.getAction())) {
3934                 this.mVoiceIntent = intent;
3935             } else {
3936                 this.mVoiceIntent = null;
3937             }
3938         }
3939
3940         boolean isEmpty() {
3941             return mVoiceIntent == null && (mUrl == null || mUrl.length() == 0);
3942         }
3943
3944         /**
3945          * Load this UrlData into the given Tab.  Use loadUrlDataIn to update
3946          * the title bar as well.
3947          */
3948         public void loadIn(Tab t) {
3949             if (mVoiceIntent != null) {
3950                 t.activateVoiceSearchMode(mVoiceIntent);
3951             } else {
3952                 t.getWebView().loadUrl(mUrl, mHeaders);
3953             }
3954         }
3955     };
3956
3957     /* package */ static final UrlData EMPTY_URL_DATA = new UrlData(null);
3958 }