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Add geolocation permissions to BrowserProvider
[android-x86/packages-apps-Browser.git] / src / com / android / browser / BrowserProvider.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.SearchManager;
20 import android.app.SearchableInfo;
21 import android.backup.BackupManager;
22 import android.content.ComponentName;
23 import android.content.ContentProvider;
24 import android.content.ContentResolver;
25 import android.content.ContentUris;
26 import android.content.ContentValues;
27 import android.content.Context;
28 import android.content.Intent;
29 import android.content.SharedPreferences;
30 import android.content.UriMatcher;
31 import android.content.SharedPreferences.Editor;
32 import android.content.pm.PackageManager;
33 import android.content.pm.ResolveInfo;
34 import android.database.AbstractCursor;
35 import android.database.ContentObserver;
36 import android.database.Cursor;
37 import android.database.sqlite.SQLiteDatabase;
38 import android.database.sqlite.SQLiteOpenHelper;
39 import android.net.Uri;
40 import android.os.AsyncTask;
41 import android.os.Handler;
42 import android.preference.PreferenceManager;
43 import android.provider.Browser;
44 import android.provider.Settings;
45 import android.provider.Browser.BookmarkColumns;
46 import android.speech.RecognizerResultsIntent;
47 import android.text.TextUtils;
48 import android.util.Log;
49 import android.util.TypedValue;
50 import android.webkit.GeolocationPermissions;
51
52 import com.android.common.Patterns;
53
54 import com.google.android.gsf.GoogleSettingsContract.Partner;
55
56 import java.io.File;
57 import java.io.FilenameFilter;
58 import java.util.ArrayList;
59 import java.util.Date;
60 import java.util.regex.Matcher;
61 import java.util.regex.Pattern;
62
63
64 public class BrowserProvider extends ContentProvider {
65
66     private SQLiteOpenHelper mOpenHelper;
67     private BackupManager mBackupManager;
68     private static final String sDatabaseName = "browser.db";
69     private static final String TAG = "BrowserProvider";
70     private static final String ORDER_BY = "visits DESC, date DESC";
71
72     private static final String PICASA_URL = "http://picasaweb.google.com/m/" +
73             "viewer?source=androidclient";
74
75     private static final String[] TABLE_NAMES = new String[] {
76         "bookmarks", "searches", "geolocation"
77     };
78     private static final String[] SUGGEST_PROJECTION = new String[] {
79             "_id", "url", "title", "bookmark", "user_entered"
80     };
81     private static final String SUGGEST_SELECTION =
82             "(url LIKE ? OR url LIKE ? OR url LIKE ? OR url LIKE ?"
83                 + " OR title LIKE ?) AND (bookmark = 1 OR user_entered = 1)";
84     private String[] SUGGEST_ARGS = new String[5];
85
86     // shared suggestion array index, make sure to match COLUMNS
87     private static final int SUGGEST_COLUMN_INTENT_ACTION_ID = 1;
88     private static final int SUGGEST_COLUMN_INTENT_DATA_ID = 2;
89     private static final int SUGGEST_COLUMN_TEXT_1_ID = 3;
90     private static final int SUGGEST_COLUMN_TEXT_2_ID = 4;
91     private static final int SUGGEST_COLUMN_ICON_1_ID = 5;
92     private static final int SUGGEST_COLUMN_ICON_2_ID = 6;
93     private static final int SUGGEST_COLUMN_QUERY_ID = 7;
94     private static final int SUGGEST_COLUMN_FORMAT = 8;
95     private static final int SUGGEST_COLUMN_INTENT_EXTRA_DATA = 9;
96
97     // shared suggestion columns
98     private static final String[] COLUMNS = new String[] {
99             "_id",
100             SearchManager.SUGGEST_COLUMN_INTENT_ACTION,
101             SearchManager.SUGGEST_COLUMN_INTENT_DATA,
102             SearchManager.SUGGEST_COLUMN_TEXT_1,
103             SearchManager.SUGGEST_COLUMN_TEXT_2,
104             SearchManager.SUGGEST_COLUMN_ICON_1,
105             SearchManager.SUGGEST_COLUMN_ICON_2,
106             SearchManager.SUGGEST_COLUMN_QUERY,
107             SearchManager.SUGGEST_COLUMN_FORMAT,
108             SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA};
109
110     private static final int MAX_SUGGESTION_SHORT_ENTRIES = 3;
111     private static final int MAX_SUGGESTION_LONG_ENTRIES = 6;
112     private static final String MAX_SUGGESTION_LONG_ENTRIES_STRING =
113             Integer.valueOf(MAX_SUGGESTION_LONG_ENTRIES).toString();
114
115     // make sure that these match the index of TABLE_NAMES
116     private static final int URI_MATCH_BOOKMARKS = 0;
117     private static final int URI_MATCH_SEARCHES = 1;
118     private static final int URI_MATCH_GEOLOCATION = 2;
119     // (id % 10) should match the table name index
120     private static final int URI_MATCH_BOOKMARKS_ID = 10;
121     private static final int URI_MATCH_SEARCHES_ID = 11;
122     //
123     private static final int URI_MATCH_SUGGEST = 20;
124     private static final int URI_MATCH_BOOKMARKS_SUGGEST = 21;
125
126     private static final UriMatcher URI_MATCHER;
127
128     static {
129         URI_MATCHER = new UriMatcher(UriMatcher.NO_MATCH);
130         URI_MATCHER.addURI("browser", TABLE_NAMES[URI_MATCH_BOOKMARKS],
131                 URI_MATCH_BOOKMARKS);
132         URI_MATCHER.addURI("browser", TABLE_NAMES[URI_MATCH_BOOKMARKS] + "/#",
133                 URI_MATCH_BOOKMARKS_ID);
134         URI_MATCHER.addURI("browser", TABLE_NAMES[URI_MATCH_SEARCHES],
135                 URI_MATCH_SEARCHES);
136         URI_MATCHER.addURI("browser", TABLE_NAMES[URI_MATCH_SEARCHES] + "/#",
137                 URI_MATCH_SEARCHES_ID);
138         URI_MATCHER.addURI("browser", SearchManager.SUGGEST_URI_PATH_QUERY,
139                 URI_MATCH_SUGGEST);
140         URI_MATCHER.addURI("browser",
141                 TABLE_NAMES[URI_MATCH_BOOKMARKS] + "/" + SearchManager.SUGGEST_URI_PATH_QUERY,
142                 URI_MATCH_BOOKMARKS_SUGGEST);
143         URI_MATCHER.addURI("browser", TABLE_NAMES[URI_MATCH_GEOLOCATION],
144                 URI_MATCH_GEOLOCATION);
145     }
146
147     // 1 -> 2 add cache table
148     // 2 -> 3 update history table
149     // 3 -> 4 add passwords table
150     // 4 -> 5 add settings table
151     // 5 -> 6 ?
152     // 6 -> 7 ?
153     // 7 -> 8 drop proxy table
154     // 8 -> 9 drop settings table
155     // 9 -> 10 add form_urls and form_data
156     // 10 -> 11 add searches table
157     // 11 -> 12 modify cache table
158     // 12 -> 13 modify cache table
159     // 13 -> 14 correspond with Google Bookmarks schema
160     // 14 -> 15 move couple of tables to either browser private database or webview database
161     // 15 -> 17 Set it up for the SearchManager
162     // 17 -> 18 Added favicon in bookmarks table for Home shortcuts
163     // 18 -> 19 Remove labels table
164     // 19 -> 20 Added thumbnail
165     // 20 -> 21 Added touch_icon
166     // 21 -> 22 Remove "clientid"
167     // 22 -> 23 Added user_entered
168     private static final int DATABASE_VERSION = 23;
169
170     // Regular expression which matches http://, followed by some stuff, followed by
171     // optionally a trailing slash, all matched as separate groups.
172     private static final Pattern STRIP_URL_PATTERN = Pattern.compile("^(http://)(.*?)(/$)?");
173
174     private SearchManager mSearchManager;
175
176     // The ID of the ColorStateList to be applied to urls of website suggestions, as derived from
177     // the current theme. This is not set until/unless beautifyUrl is called, at which point
178     // this variable caches the color value.
179     private static String mSearchUrlColorId;
180
181     public BrowserProvider() {
182     }
183
184
185     private static CharSequence replaceSystemPropertyInString(Context context, CharSequence srcString) {
186         StringBuffer sb = new StringBuffer();
187         int lastCharLoc = 0;
188
189         final String client_id = Partner.getString(context.getContentResolver(),
190                                                     Partner.CLIENT_ID, "android-google");
191
192         for (int i = 0; i < srcString.length(); ++i) {
193             char c = srcString.charAt(i);
194             if (c == '{') {
195                 sb.append(srcString.subSequence(lastCharLoc, i));
196                 lastCharLoc = i;
197           inner:
198                 for (int j = i; j < srcString.length(); ++j) {
199                     char k = srcString.charAt(j);
200                     if (k == '}') {
201                         String propertyKeyValue = srcString.subSequence(i + 1, j).toString();
202                         if (propertyKeyValue.equals("CLIENT_ID")) {
203                             sb.append(client_id);
204                         } else {
205                             sb.append("unknown");
206                         }
207                         lastCharLoc = j + 1;
208                         i = j;
209                         break inner;
210                     }
211                 }
212             }
213         }
214         if (srcString.length() - lastCharLoc > 0) {
215             // Put on the tail, if there is one
216             sb.append(srcString.subSequence(lastCharLoc, srcString.length()));
217         }
218         return sb;
219     }
220
221     private static class DatabaseHelper extends SQLiteOpenHelper {
222         private Context mContext;
223
224         public DatabaseHelper(Context context) {
225             super(context, sDatabaseName, null, DATABASE_VERSION);
226             mContext = context;
227         }
228
229         @Override
230         public void onCreate(SQLiteDatabase db) {
231             db.execSQL("CREATE TABLE bookmarks (" +
232                     "_id INTEGER PRIMARY KEY," +
233                     "title TEXT," +
234                     "url TEXT," +
235                     "visits INTEGER," +
236                     "date LONG," +
237                     "created LONG," +
238                     "description TEXT," +
239                     "bookmark INTEGER," +
240                     "favicon BLOB DEFAULT NULL," +
241                     "thumbnail BLOB DEFAULT NULL," +
242                     "touch_icon BLOB DEFAULT NULL," +
243                     "user_entered INTEGER" +
244                     ");");
245
246             final CharSequence[] bookmarks = mContext.getResources()
247                     .getTextArray(R.array.bookmarks);
248             int size = bookmarks.length;
249             try {
250                 for (int i = 0; i < size; i = i + 2) {
251                     CharSequence bookmarkDestination = replaceSystemPropertyInString(mContext, bookmarks[i + 1]);
252                     db.execSQL("INSERT INTO bookmarks (title, url, visits, " +
253                             "date, created, bookmark)" + " VALUES('" +
254                             bookmarks[i] + "', '" + bookmarkDestination +
255                             "', 0, 0, 0, 1);");
256                 }
257             } catch (ArrayIndexOutOfBoundsException e) {
258             }
259
260             db.execSQL("CREATE TABLE searches (" +
261                     "_id INTEGER PRIMARY KEY," +
262                     "search TEXT," +
263                     "date LONG" +
264                     ");");
265         }
266
267         @Override
268         public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
269             Log.w(TAG, "Upgrading database from version " + oldVersion + " to "
270                     + newVersion);
271             if (oldVersion == 18) {
272                 db.execSQL("DROP TABLE IF EXISTS labels");
273             }
274             if (oldVersion <= 19) {
275                 db.execSQL("ALTER TABLE bookmarks ADD COLUMN thumbnail BLOB DEFAULT NULL;");
276             }
277             if (oldVersion < 21) {
278                 db.execSQL("ALTER TABLE bookmarks ADD COLUMN touch_icon BLOB DEFAULT NULL;");
279             }
280             if (oldVersion < 22) {
281                 db.execSQL("DELETE FROM bookmarks WHERE (bookmark = 0 AND url LIKE \"%.google.%client=ms-%\")");
282                 removeGears();
283             }
284             if (oldVersion < 23) {
285                 db.execSQL("ALTER TABLE bookmarks ADD COLUMN user_entered INTEGER;");
286             } else {
287                 db.execSQL("DROP TABLE IF EXISTS bookmarks");
288                 db.execSQL("DROP TABLE IF EXISTS searches");
289                 onCreate(db);
290             }
291         }
292
293         private void removeGears() {
294             AsyncTask<Void, Void, Void> task = new AsyncTask<Void, Void, Void>() {
295                 public Void doInBackground(Void... unused) {
296                     String browserDataDirString = mContext.getApplicationInfo().dataDir;
297                     final String appPluginsDirString = "app_plugins";
298                     final String gearsPrefix = "gears";
299                     File appPluginsDir = new File(browserDataDirString + File.separator
300                             + appPluginsDirString);
301                     if (!appPluginsDir.exists()) {
302                         return null;
303                     }
304                     // Delete the Gears plugin files
305                     File[] gearsFiles = appPluginsDir.listFiles(new FilenameFilter() {
306                         public boolean accept(File dir, String filename) {
307                             return filename.startsWith(gearsPrefix);
308                         }
309                     });
310                     for (int i = 0; i < gearsFiles.length; ++i) {
311                         if (gearsFiles[i].isDirectory()) {
312                             deleteDirectory(gearsFiles[i]);
313                         } else {
314                             gearsFiles[i].delete();
315                         }
316                     }
317                     // Delete the Gears data files
318                     File gearsDataDir = new File(browserDataDirString + File.separator
319                             + gearsPrefix);
320                     if (!gearsDataDir.exists()) {
321                         return null;
322                     }
323                     deleteDirectory(gearsDataDir);
324                     return null;
325                 }
326
327                 private void deleteDirectory(File currentDir) {
328                     File[] files = currentDir.listFiles();
329                     for (int i = 0; i < files.length; ++i) {
330                         if (files[i].isDirectory()) {
331                             deleteDirectory(files[i]);
332                         }
333                         files[i].delete();
334                     }
335                     currentDir.delete();
336                 }
337             };
338
339             task.execute();
340         }
341     }
342
343     @Override
344     public boolean onCreate() {
345         final Context context = getContext();
346         mOpenHelper = new DatabaseHelper(context);
347         mBackupManager = new BackupManager(context);
348         // we added "picasa web album" into default bookmarks for version 19.
349         // To avoid erasing the bookmark table, we added it explicitly for
350         // version 18 and 19 as in the other cases, we will erase the table.
351         if (DATABASE_VERSION == 18 || DATABASE_VERSION == 19) {
352             SharedPreferences p = PreferenceManager
353                     .getDefaultSharedPreferences(context);
354             boolean fix = p.getBoolean("fix_picasa", true);
355             if (fix) {
356                 fixPicasaBookmark();
357                 Editor ed = p.edit();
358                 ed.putBoolean("fix_picasa", false);
359                 ed.commit();
360             }
361         }
362         mSearchManager = (SearchManager) context.getSystemService(Context.SEARCH_SERVICE);
363         mShowWebSuggestionsSettingChangeObserver
364             = new ShowWebSuggestionsSettingChangeObserver();
365         context.getContentResolver().registerContentObserver(
366                 Settings.System.getUriFor(
367                         Settings.System.SHOW_WEB_SUGGESTIONS),
368                 true, mShowWebSuggestionsSettingChangeObserver);
369         updateShowWebSuggestions();
370         return true;
371     }
372
373     /**
374      * This Observer will ensure that if the user changes the system
375      * setting of whether to display web suggestions, we will
376      * change accordingly.
377      */
378     /* package */ class ShowWebSuggestionsSettingChangeObserver
379             extends ContentObserver {
380         public ShowWebSuggestionsSettingChangeObserver() {
381             super(new Handler());
382         }
383
384         @Override
385         public void onChange(boolean selfChange) {
386             updateShowWebSuggestions();
387         }
388     }
389
390     private ShowWebSuggestionsSettingChangeObserver
391             mShowWebSuggestionsSettingChangeObserver;
392
393     // If non-null, then the system is set to show web suggestions,
394     // and this is the SearchableInfo to use to get them.
395     private SearchableInfo mSearchableInfo;
396
397     /**
398      * Check the system settings to see whether web suggestions are
399      * allowed.  If so, store the SearchableInfo to grab suggestions
400      * while the user is typing.
401      */
402     private void updateShowWebSuggestions() {
403         mSearchableInfo = null;
404         Context context = getContext();
405         if (Settings.System.getInt(context.getContentResolver(),
406                 Settings.System.SHOW_WEB_SUGGESTIONS,
407                 1 /* default on */) == 1) {
408             Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
409             intent.addCategory(Intent.CATEGORY_DEFAULT);
410             ResolveInfo info = context.getPackageManager().resolveActivity(
411                     intent, PackageManager.MATCH_DEFAULT_ONLY);
412             if (info != null) {
413                 ComponentName googleSearchComponent =
414                         new ComponentName(info.activityInfo.packageName,
415                                 info.activityInfo.name);
416                 mSearchableInfo = mSearchManager.getSearchableInfo(
417                         googleSearchComponent, false);
418             }
419         }
420     }
421
422     private void fixPicasaBookmark() {
423         SQLiteDatabase db = mOpenHelper.getWritableDatabase();
424         Cursor cursor = db.rawQuery("SELECT _id FROM bookmarks WHERE " +
425                 "bookmark = 1 AND url = ?", new String[] { PICASA_URL });
426         try {
427             if (!cursor.moveToFirst()) {
428                 // set "created" so that it will be on the top of the list
429                 db.execSQL("INSERT INTO bookmarks (title, url, visits, " +
430                         "date, created, bookmark)" + " VALUES('" +
431                         getContext().getString(R.string.picasa) + "', '"
432                         + PICASA_URL + "', 0, 0, " + new Date().getTime()
433                         + ", 1);");
434             }
435         } finally {
436             if (cursor != null) {
437                 cursor.close();
438             }
439         }
440     }
441
442     /*
443      * Subclass AbstractCursor so we can combine multiple Cursors and add
444      * "Google Search".
445      * Here are the rules.
446      * 1. We only have MAX_SUGGESTION_LONG_ENTRIES in the list plus
447      *      "Google Search";
448      * 2. If bookmark/history entries are less than
449      *      (MAX_SUGGESTION_SHORT_ENTRIES -1), we include Google suggest.
450      */
451     private class MySuggestionCursor extends AbstractCursor {
452         private Cursor  mHistoryCursor;
453         private Cursor  mSuggestCursor;
454         private int     mHistoryCount;
455         private int     mSuggestionCount;
456         private boolean mIncludeWebSearch;
457         private String  mString;
458         private int     mSuggestText1Id;
459         private int     mSuggestText2Id;
460         private int     mSuggestQueryId;
461         private int     mSuggestIntentExtraDataId;
462
463         public MySuggestionCursor(Cursor hc, Cursor sc, String string) {
464             mHistoryCursor = hc;
465             mSuggestCursor = sc;
466             mHistoryCount = hc.getCount();
467             mSuggestionCount = sc != null ? sc.getCount() : 0;
468             if (mSuggestionCount > (MAX_SUGGESTION_LONG_ENTRIES - mHistoryCount)) {
469                 mSuggestionCount = MAX_SUGGESTION_LONG_ENTRIES - mHistoryCount;
470             }
471             mString = string;
472             mIncludeWebSearch = string.length() > 0;
473
474             // Some web suggest providers only give suggestions and have no description string for
475             // items. The order of the result columns may be different as well. So retrieve the
476             // column indices for the fields we need now and check before using below.
477             if (mSuggestCursor == null) {
478                 mSuggestText1Id = -1;
479                 mSuggestText2Id = -1;
480                 mSuggestQueryId = -1;
481                 mSuggestIntentExtraDataId = -1;
482             } else {
483                 mSuggestText1Id = mSuggestCursor.getColumnIndex(
484                                 SearchManager.SUGGEST_COLUMN_TEXT_1);
485                 mSuggestText2Id = mSuggestCursor.getColumnIndex(
486                                 SearchManager.SUGGEST_COLUMN_TEXT_2);
487                 mSuggestQueryId = mSuggestCursor.getColumnIndex(
488                                 SearchManager.SUGGEST_COLUMN_QUERY);
489                 mSuggestIntentExtraDataId = mSuggestCursor.getColumnIndex(
490                                 SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA);
491             }
492         }
493
494         @Override
495         public boolean onMove(int oldPosition, int newPosition) {
496             if (mHistoryCursor == null) {
497                 return false;
498             }
499             if (mIncludeWebSearch) {
500                 if (newPosition == 0) {
501                     return true;
502                 } else {
503                     newPosition--;
504                 }
505             }
506             if (mHistoryCount > newPosition) {
507                 mHistoryCursor.moveToPosition(newPosition);
508             } else {
509                 mSuggestCursor.moveToPosition(newPosition - mHistoryCount);
510             }
511             return true;
512         }
513
514         @Override
515         public int getCount() {
516             if (mIncludeWebSearch) {
517                 return mHistoryCount + mSuggestionCount + 1;
518             } else {
519                 return mHistoryCount + mSuggestionCount;
520             }
521         }
522
523         @Override
524         public String[] getColumnNames() {
525             return COLUMNS;
526         }
527
528         @Override
529         public String getString(int columnIndex) {
530             if ((mPos != -1 && mHistoryCursor != null)) {
531                 int position = mIncludeWebSearch ? mPos - 1 : mPos;
532                 switch(columnIndex) {
533                     case SUGGEST_COLUMN_INTENT_ACTION_ID:
534                         if (position >= 0 && position < mHistoryCount) {
535                             return Intent.ACTION_VIEW;
536                         } else {
537                             return Intent.ACTION_SEARCH;
538                         }
539
540                     case SUGGEST_COLUMN_INTENT_DATA_ID:
541                         if (position >= 0 && position < mHistoryCount) {
542                             return mHistoryCursor.getString(1);
543                         } else {
544                             return null;
545                         }
546
547                     case SUGGEST_COLUMN_TEXT_1_ID:
548                         if (position < 0) {
549                             return mString;
550                         } else if (mHistoryCount > position) {
551                             return getHistoryTitle();
552                         } else {
553                             if (mSuggestText1Id == -1) return null;
554                             return mSuggestCursor.getString(mSuggestText1Id);
555                         }
556
557                     case SUGGEST_COLUMN_TEXT_2_ID:
558                         if (position < 0) {
559                             return getContext().getString(R.string.search_the_web);
560                         } else if (mHistoryCount > position) {
561                             return getHistorySubtitle();
562                         } else {
563                             if (mSuggestText2Id == -1) return null;
564                             return mSuggestCursor.getString(mSuggestText2Id);
565                         }
566
567                     case SUGGEST_COLUMN_ICON_1_ID:
568                         if (position >= 0 && position < mHistoryCount) {
569                             if (mHistoryCursor.getInt(3) == 1) {
570                                 return Integer.valueOf(
571                                         R.drawable.ic_search_category_bookmark)
572                                         .toString();
573                             } else {
574                                 return Integer.valueOf(
575                                         R.drawable.ic_search_category_history)
576                                         .toString();
577                             }
578                         } else {
579                             return Integer.valueOf(
580                                     R.drawable.ic_search_category_suggest)
581                                     .toString();
582                         }
583
584                     case SUGGEST_COLUMN_ICON_2_ID:
585                         return "0";
586
587                     case SUGGEST_COLUMN_QUERY_ID:
588                         if (position < 0) {
589                             return mString;
590                         } else if (mHistoryCount > position) {
591                             // Return the url in the intent query column. This is ignored
592                             // within the browser because our searchable is set to
593                             // android:searchMode="queryRewriteFromData", but it is used by
594                             // global search for query rewriting.
595                             return mHistoryCursor.getString(1);
596                         } else {
597                             if (mSuggestQueryId == -1) return null;
598                             return mSuggestCursor.getString(mSuggestQueryId);
599                         }
600
601                     case SUGGEST_COLUMN_FORMAT:
602                         return "html";
603
604                     case SUGGEST_COLUMN_INTENT_EXTRA_DATA:
605                         if (position < 0) {
606                             return null;
607                         } else if (mHistoryCount > position) {
608                             return null;
609                         } else {
610                             if (mSuggestIntentExtraDataId == -1) return null;
611                             return mSuggestCursor.getString(mSuggestIntentExtraDataId);
612                         }
613                 }
614             }
615             return null;
616         }
617
618         @Override
619         public double getDouble(int column) {
620             throw new UnsupportedOperationException();
621         }
622
623         @Override
624         public float getFloat(int column) {
625             throw new UnsupportedOperationException();
626         }
627
628         @Override
629         public int getInt(int column) {
630             throw new UnsupportedOperationException();
631         }
632
633         @Override
634         public long getLong(int column) {
635             if ((mPos != -1) && column == 0) {
636                 return mPos;        // use row# as the _Id
637             }
638             throw new UnsupportedOperationException();
639         }
640
641         @Override
642         public short getShort(int column) {
643             throw new UnsupportedOperationException();
644         }
645
646         @Override
647         public boolean isNull(int column) {
648             throw new UnsupportedOperationException();
649         }
650
651         // TODO Temporary change, finalize after jq's changes go in
652         public void deactivate() {
653             if (mHistoryCursor != null) {
654                 mHistoryCursor.deactivate();
655             }
656             if (mSuggestCursor != null) {
657                 mSuggestCursor.deactivate();
658             }
659             super.deactivate();
660         }
661
662         public boolean requery() {
663             return (mHistoryCursor != null ? mHistoryCursor.requery() : false) |
664                     (mSuggestCursor != null ? mSuggestCursor.requery() : false);
665         }
666
667         // TODO Temporary change, finalize after jq's changes go in
668         public void close() {
669             super.close();
670             if (mHistoryCursor != null) {
671                 mHistoryCursor.close();
672                 mHistoryCursor = null;
673             }
674             if (mSuggestCursor != null) {
675                 mSuggestCursor.close();
676                 mSuggestCursor = null;
677             }
678         }
679
680         /**
681          * Provides the title (text line 1) for a browser suggestion, which should be the
682          * webpage title. If the webpage title is empty, returns the stripped url instead.
683          *
684          * @return the title string to use
685          */
686         private String getHistoryTitle() {
687             String title = mHistoryCursor.getString(2 /* webpage title */);
688             if (TextUtils.isEmpty(title) || TextUtils.getTrimmedLength(title) == 0) {
689                 title = beautifyUrl(mHistoryCursor.getString(1 /* url */));
690             }
691             return title;
692         }
693
694         /**
695          * Provides the subtitle (text line 2) for a browser suggestion, which should be the
696          * webpage url. If the webpage title is empty, then the url should go in the title
697          * instead, and the subtitle should be empty, so this would return null.
698          *
699          * @return the subtitle string to use, or null if none
700          */
701         private String getHistorySubtitle() {
702             String title = mHistoryCursor.getString(2 /* webpage title */);
703             if (TextUtils.isEmpty(title) || TextUtils.getTrimmedLength(title) == 0) {
704                 return null;
705             } else {
706                 return beautifyUrl(mHistoryCursor.getString(1 /* url */));
707             }
708         }
709
710         /**
711          * Strips "http://" from the beginning of a url and "/" from the end,
712          * and adds html formatting to make it green.
713          */
714         private String beautifyUrl(String url) {
715             if (mSearchUrlColorId == null) {
716                 // Get the color used for this purpose from the current theme.
717                 TypedValue colorValue = new TypedValue();
718                 getContext().getTheme().resolveAttribute(
719                         com.android.internal.R.attr.textColorSearchUrl, colorValue, true);
720                 mSearchUrlColorId = Integer.toString(colorValue.resourceId);
721             }
722
723             return "<font color=\"@" + mSearchUrlColorId + "\">" + stripUrl(url) + "</font>";
724         }
725     }
726
727     private static class ResultsCursor extends AbstractCursor {
728         // Array indices for RESULTS_COLUMNS
729         private static final int RESULT_ACTION_ID = 1;
730         private static final int RESULT_DATA_ID = 2;
731         private static final int RESULT_TEXT_ID = 3;
732         private static final int RESULT_ICON_ID = 4;
733         private static final int RESULT_EXTRA_ID = 5;
734
735         private static final String[] RESULTS_COLUMNS = new String[] {
736                 "_id",
737                 SearchManager.SUGGEST_COLUMN_INTENT_ACTION,
738                 SearchManager.SUGGEST_COLUMN_INTENT_DATA,
739                 SearchManager.SUGGEST_COLUMN_TEXT_1,
740                 SearchManager.SUGGEST_COLUMN_ICON_1,
741                 SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA
742         };
743         private final ArrayList<String> mResults;
744         public ResultsCursor(ArrayList<String> results) {
745             mResults = results;
746         }
747         public int getCount() { return mResults.size(); }
748
749         public String[] getColumnNames() {
750             return RESULTS_COLUMNS;
751         }
752
753         public String getString(int column) {
754             switch (column) {
755                 case RESULT_ACTION_ID:
756                     return RecognizerResultsIntent.ACTION_VOICE_SEARCH_RESULTS;
757                 case RESULT_TEXT_ID:
758                 // The data is used when the phone is in landscape mode.  We
759                 // still want to show the result string.
760                 case RESULT_DATA_ID:
761                     return mResults.get(mPos);
762                 case RESULT_EXTRA_ID:
763                     // The Intent's extra data will store the index into
764                     // mResults so the BrowserActivity will know which result to
765                     // use.
766                     return Integer.toString(mPos);
767                 case RESULT_ICON_ID:
768                     return Integer.valueOf(R.drawable.magnifying_glass)
769                             .toString();
770                 default:
771                     return null;
772             }
773         }
774         public short getShort(int column) {
775             throw new UnsupportedOperationException();
776         }
777         public int getInt(int column) {
778             throw new UnsupportedOperationException();
779         }
780         public long getLong(int column) {
781             if ((mPos != -1) && column == 0) {
782                 return mPos;        // use row# as the _id
783             }
784             throw new UnsupportedOperationException();
785         }
786         public float getFloat(int column) {
787             throw new UnsupportedOperationException();
788         }
789         public double getDouble(int column) {
790             throw new UnsupportedOperationException();
791         }
792         public boolean isNull(int column) {
793             throw new UnsupportedOperationException();
794         }
795     }
796
797     private ResultsCursor mResultsCursor;
798
799     /**
800      * Provide a set of results to be returned to query, intended to be used
801      * by the SearchDialog when the BrowserActivity is in voice search mode.
802      * @param results Strings to display in the dropdown from the SearchDialog
803      */
804     /* package */ void setQueryResults(ArrayList<String> results) {
805         if (results == null) {
806             mResultsCursor = null;
807         } else {
808             mResultsCursor = new ResultsCursor(results);
809         }
810     }
811
812     @Override
813     public Cursor query(Uri url, String[] projectionIn, String selection,
814             String[] selectionArgs, String sortOrder)
815             throws IllegalStateException {
816         int match = URI_MATCHER.match(url);
817         if (match == -1) {
818             throw new IllegalArgumentException("Unknown URL");
819         }
820         if (match == URI_MATCH_GEOLOCATION) {
821             throw new UnsupportedOperationException("query() not supported for geolocation");
822         }
823         if (match == URI_MATCH_SUGGEST && mResultsCursor != null) {
824             Cursor results = mResultsCursor;
825             mResultsCursor = null;
826             return results;
827         }
828         SQLiteDatabase db = mOpenHelper.getReadableDatabase();
829
830         if (match == URI_MATCH_SUGGEST || match == URI_MATCH_BOOKMARKS_SUGGEST) {
831             String suggestSelection;
832             String [] myArgs;
833             if (selectionArgs[0] == null || selectionArgs[0].equals("")) {
834                 suggestSelection = null;
835                 myArgs = null;
836             } else {
837                 String like = selectionArgs[0] + "%";
838                 if (selectionArgs[0].startsWith("http")
839                         || selectionArgs[0].startsWith("file")) {
840                     myArgs = new String[1];
841                     myArgs[0] = like;
842                     suggestSelection = selection;
843                 } else {
844                     SUGGEST_ARGS[0] = "http://" + like;
845                     SUGGEST_ARGS[1] = "http://www." + like;
846                     SUGGEST_ARGS[2] = "https://" + like;
847                     SUGGEST_ARGS[3] = "https://www." + like;
848                     // To match against titles.
849                     SUGGEST_ARGS[4] = like;
850                     myArgs = SUGGEST_ARGS;
851                     suggestSelection = SUGGEST_SELECTION;
852                 }
853             }
854
855             Cursor c = db.query(TABLE_NAMES[URI_MATCH_BOOKMARKS],
856                     SUGGEST_PROJECTION, suggestSelection, myArgs, null, null,
857                     ORDER_BY, MAX_SUGGESTION_LONG_ENTRIES_STRING);
858
859             if (match == URI_MATCH_BOOKMARKS_SUGGEST
860                     || Patterns.WEB_URL.matcher(selectionArgs[0]).matches()) {
861                 return new MySuggestionCursor(c, null, "");
862             } else {
863                 // get Google suggest if there is still space in the list
864                 if (myArgs != null && myArgs.length > 1
865                         && mSearchableInfo != null
866                         && c.getCount() < (MAX_SUGGESTION_SHORT_ENTRIES - 1)) {
867                     Cursor sc = mSearchManager.getSuggestions(mSearchableInfo, selectionArgs[0]);
868                     return new MySuggestionCursor(c, sc, selectionArgs[0]);
869                 }
870                 return new MySuggestionCursor(c, null, selectionArgs[0]);
871             }
872         }
873
874         String[] projection = null;
875         if (projectionIn != null && projectionIn.length > 0) {
876             projection = new String[projectionIn.length + 1];
877             System.arraycopy(projectionIn, 0, projection, 0, projectionIn.length);
878             projection[projectionIn.length] = "_id AS _id";
879         }
880
881         StringBuilder whereClause = new StringBuilder(256);
882         if (match == URI_MATCH_BOOKMARKS_ID || match == URI_MATCH_SEARCHES_ID) {
883             whereClause.append("(_id = ").append(url.getPathSegments().get(1))
884                     .append(")");
885         }
886
887         // Tack on the user's selection, if present
888         if (selection != null && selection.length() > 0) {
889             if (whereClause.length() > 0) {
890                 whereClause.append(" AND ");
891             }
892
893             whereClause.append('(');
894             whereClause.append(selection);
895             whereClause.append(')');
896         }
897         Cursor c = db.query(TABLE_NAMES[match % 10], projection,
898                 whereClause.toString(), selectionArgs, null, null, sortOrder,
899                 null);
900         c.setNotificationUri(getContext().getContentResolver(), url);
901         return c;
902     }
903
904     @Override
905     public String getType(Uri url) {
906         int match = URI_MATCHER.match(url);
907         switch (match) {
908             case URI_MATCH_BOOKMARKS:
909                 return "vnd.android.cursor.dir/bookmark";
910
911             case URI_MATCH_BOOKMARKS_ID:
912                 return "vnd.android.cursor.item/bookmark";
913
914             case URI_MATCH_SEARCHES:
915                 return "vnd.android.cursor.dir/searches";
916
917             case URI_MATCH_SEARCHES_ID:
918                 return "vnd.android.cursor.item/searches";
919
920             case URI_MATCH_SUGGEST:
921                 return SearchManager.SUGGEST_MIME_TYPE;
922
923             case URI_MATCH_GEOLOCATION:
924                 return "vnd.android.cursor.dir/geolocation";
925
926             default:
927                 throw new IllegalArgumentException("Unknown URL");
928         }
929     }
930
931     @Override
932     public Uri insert(Uri url, ContentValues initialValues) {
933         boolean isBookmarkTable = false;
934         SQLiteDatabase db = mOpenHelper.getWritableDatabase();
935
936         int match = URI_MATCHER.match(url);
937         Uri uri = null;
938         switch (match) {
939             case URI_MATCH_BOOKMARKS: {
940                 // Insert into the bookmarks table
941                 long rowID = db.insert(TABLE_NAMES[URI_MATCH_BOOKMARKS], "url",
942                         initialValues);
943                 if (rowID > 0) {
944                     uri = ContentUris.withAppendedId(Browser.BOOKMARKS_URI,
945                             rowID);
946                 }
947                 isBookmarkTable = true;
948                 break;
949             }
950
951             case URI_MATCH_SEARCHES: {
952                 // Insert into the searches table
953                 long rowID = db.insert(TABLE_NAMES[URI_MATCH_SEARCHES], "url",
954                         initialValues);
955                 if (rowID > 0) {
956                     uri = ContentUris.withAppendedId(Browser.SEARCHES_URI,
957                             rowID);
958                 }
959                 break;
960             }
961
962             case URI_MATCH_GEOLOCATION:
963                 String origin = initialValues.getAsString(Browser.GeolocationColumns.ORIGIN);
964                 if (TextUtils.isEmpty(origin)) {
965                     throw new IllegalArgumentException("Empty origin");
966                 }
967                 GeolocationPermissions.getInstance().allow(origin);
968                 // TODO: Should we have one URI per permission?
969                 uri = Browser.GEOLOCATION_URI;
970                 break;
971
972             default:
973                 throw new IllegalArgumentException("Unknown URL");
974         }
975
976         if (uri == null) {
977             throw new IllegalArgumentException("Unknown URL");
978         }
979         getContext().getContentResolver().notifyChange(uri, null);
980
981         // Back up the new bookmark set if we just inserted one.
982         // A row created when bookmarks are added from scratch will have
983         // bookmark=1 in the initial value set.
984         if (isBookmarkTable
985                 && initialValues.containsKey(BookmarkColumns.BOOKMARK)
986                 && initialValues.getAsInteger(BookmarkColumns.BOOKMARK) != 0) {
987             mBackupManager.dataChanged();
988         }
989         return uri;
990     }
991
992     @Override
993     public int delete(Uri url, String where, String[] whereArgs) {
994         SQLiteDatabase db = mOpenHelper.getWritableDatabase();
995
996         int match = URI_MATCHER.match(url);
997         if (match == -1 || match == URI_MATCH_SUGGEST) {
998             throw new IllegalArgumentException("Unknown URL");
999         }
1000
1001         if (match == URI_MATCH_GEOLOCATION) {
1002             return deleteGeolocation(url, where, whereArgs);
1003         }
1004
1005         // need to know whether it's the bookmarks table for a couple of reasons
1006         boolean isBookmarkTable = (match == URI_MATCH_BOOKMARKS_ID);
1007         String id = null;
1008
1009         if (isBookmarkTable || match == URI_MATCH_SEARCHES_ID) {
1010             StringBuilder sb = new StringBuilder();
1011             if (where != null && where.length() > 0) {
1012                 sb.append("( ");
1013                 sb.append(where);
1014                 sb.append(" ) AND ");
1015             }
1016             id = url.getPathSegments().get(1);
1017             sb.append("_id = ");
1018             sb.append(id);
1019             where = sb.toString();
1020         }
1021
1022         ContentResolver cr = getContext().getContentResolver();
1023
1024         // we'lll need to back up the bookmark set if we are about to delete one
1025         if (isBookmarkTable) {
1026             Cursor cursor = cr.query(Browser.BOOKMARKS_URI,
1027                     new String[] { BookmarkColumns.BOOKMARK },
1028                     "_id = " + id, null, null);
1029             if (cursor.moveToNext()) {
1030                 if (cursor.getInt(0) != 0) {
1031                     // yep, this record is a bookmark
1032                     mBackupManager.dataChanged();
1033                 }
1034             }
1035             cursor.close();
1036         }
1037
1038         int count = db.delete(TABLE_NAMES[match % 10], where, whereArgs);
1039         cr.notifyChange(url, null);
1040         return count;
1041     }
1042
1043     private int deleteGeolocation(Uri uri, String where, String[] whereArgs) {
1044         if (whereArgs.length != 1) {
1045             throw new IllegalArgumentException("Bad where arguments");
1046         }
1047         String origin = whereArgs[0];
1048         if (TextUtils.isEmpty(origin)) {
1049             throw new IllegalArgumentException("Empty origin");
1050         }
1051         GeolocationPermissions.getInstance().clear(origin);
1052         getContext().getContentResolver().notifyChange(Browser.GEOLOCATION_URI, null);
1053         return 1;  // We always return 1, to avoid having to check whether anything was actually removed
1054     }
1055
1056     @Override
1057     public int update(Uri url, ContentValues values, String where,
1058             String[] whereArgs) {
1059         SQLiteDatabase db = mOpenHelper.getWritableDatabase();
1060
1061         int match = URI_MATCHER.match(url);
1062         if (match == -1 || match == URI_MATCH_SUGGEST) {
1063             throw new IllegalArgumentException("Unknown URL");
1064         }
1065
1066         String id = null;
1067         boolean isBookmarkTable = (match == URI_MATCH_BOOKMARKS_ID);
1068         boolean changingBookmarks = false;
1069
1070         if (isBookmarkTable || match == URI_MATCH_SEARCHES_ID) {
1071             StringBuilder sb = new StringBuilder();
1072             if (where != null && where.length() > 0) {
1073                 sb.append("( ");
1074                 sb.append(where);
1075                 sb.append(" ) AND ");
1076             }
1077             id = url.getPathSegments().get(1);
1078             sb.append("_id = ");
1079             sb.append(id);
1080             where = sb.toString();
1081         }
1082
1083         ContentResolver cr = getContext().getContentResolver();
1084
1085         // Not all bookmark-table updates should be backed up.  Look to see
1086         // whether we changed the title, url, or "is a bookmark" state, and
1087         // request a backup if so.
1088         if (isBookmarkTable) {
1089             // Alterations to the bookmark field inherently change the bookmark
1090             // set, so we don't need to query the record; we know a priori that
1091             // we will need to back up this change.
1092             if (values.containsKey(BookmarkColumns.BOOKMARK)) {
1093                 changingBookmarks = true;
1094             }
1095             // changing the title or URL of a bookmark record requires a backup,
1096             // but we don't know wether such an update is on a bookmark without
1097             // querying the record
1098             if (!changingBookmarks &&
1099                     (values.containsKey(BookmarkColumns.TITLE)
1100                      || values.containsKey(BookmarkColumns.URL))) {
1101                 // when isBookmarkTable is true, the 'id' var was assigned above
1102                 Cursor cursor = cr.query(Browser.BOOKMARKS_URI,
1103                         new String[] { BookmarkColumns.BOOKMARK },
1104                         "_id = " + id, null, null);
1105                 if (cursor.moveToNext()) {
1106                     changingBookmarks = (cursor.getInt(0) != 0);
1107                 }
1108                 cursor.close();
1109             }
1110
1111             // if this *is* a bookmark row we're altering, we need to back it up.
1112             if (changingBookmarks) {
1113                 mBackupManager.dataChanged();
1114             }
1115         }
1116
1117         int ret = db.update(TABLE_NAMES[match % 10], values, where, whereArgs);
1118         cr.notifyChange(url, null);
1119         return ret;
1120     }
1121
1122     /**
1123      * Strips the provided url of preceding "http://" and any trailing "/". Does not
1124      * strip "https://". If the provided string cannot be stripped, the original string
1125      * is returned.
1126      *
1127      * TODO: Put this in TextUtils to be used by other packages doing something similar.
1128      *
1129      * @param url a url to strip, like "http://www.google.com/"
1130      * @return a stripped url like "www.google.com", or the original string if it could
1131      *         not be stripped
1132      */
1133     private static String stripUrl(String url) {
1134         if (url == null) return null;
1135         Matcher m = STRIP_URL_PATTERN.matcher(url);
1136         if (m.matches() && m.groupCount() == 3) {
1137             return m.group(2);
1138         } else {
1139             return url;
1140         }
1141     }
1142
1143 }