Add external Preferences indexing

- define SettingsSearchIndexablesProvider as an internal
SearchIndexablesProvider
- protect access thru using android.permission.READ_SEARCH_INDEXABLES
- update WallpaperTypeSettings and WifiSettings for taking care of
the new model
- update the Dashboard for taking care about external Icons for the
search result
- update sqlite model/version for taking care about Intents
(enable launching external applications for showing the settings)

Change-Id: I2e38599327e6480f1754f52666becce0884cee9d

src/com/android/settings/SettingsActivity.java

@@ -94,14 +94,12 @@ import com.android.settings.dashboard.DashboardSummary;
 import com.android.settings.deviceinfo.Memory;
 import com.android.settings.deviceinfo.UsbSettings;
 import com.android.settings.fuelgauge.PowerUsageSummary;
-import com.android.settings.indexer.Index;
-import com.android.settings.indexer.IndexableRef;
+import com.android.settings.search.Index;
 import com.android.settings.inputmethod.InputMethodAndLanguageSettings;
 import com.android.settings.inputmethod.KeyboardLayoutPickerFragment;
 import com.android.settings.inputmethod.SpellCheckersSettings;
 import com.android.settings.inputmethod.UserDictionaryList;
 import com.android.settings.location.LocationSettings;
-import com.android.settings.net.DataUsageMeteredSettings;
 import com.android.settings.nfc.AndroidBeam;
 import com.android.settings.nfc.PaymentSettings;
 import com.android.settings.print.PrintJobSettingsFragment;
@@ -342,76 +340,6 @@ public class SettingsActivity extends Activity
         }
     };
 
-    private static int NO_DATA_RES_ID = 0;
-
-    /**
-     * Indexable data description.
-     *
-     * Known restriction: we are only searching (for now) the first level of Settings.
-     */
-    private static IndexableRef[] INDEXABLE_REFS = new IndexableRef[] {
-            new IndexableRef(1, NO_DATA_RES_ID,
-                    WifiSettings.class.getName(),
-                    R.drawable.ic_settings_wireless),
-            new IndexableRef(2, R.xml.bluetooth_settings,
-                    BluetoothSettings.class.getName(),
-                    R.drawable.ic_settings_bluetooth2),
-            new IndexableRef(3, R.xml.data_usage_metered_prefs,
-                    DataUsageMeteredSettings.class.getName(),
-                    R.drawable.ic_settings_data_usage),
-            new IndexableRef(4, R.xml.wireless_settings,
-                    WirelessSettings.class.getName(),
-                    R.drawable.empty_icon),
-            new IndexableRef(5, R.xml.home_selection,
-                    HomeSettings.class.getName(),
-                    R.drawable.ic_settings_home),
-            new IndexableRef(6, R.xml.sound_settings,
-                    SoundSettings.class.getName(),
-                    R.drawable.ic_settings_sound),
-            new IndexableRef(7, R.xml.display_settings,
-                    DisplaySettings.class.getName(),
-                    R.drawable.ic_settings_display),
-            new IndexableRef(7, NO_DATA_RES_ID,
-                    WallpaperTypeSettings.class.getName(),
-                    R.drawable.ic_settings_display),
-            new IndexableRef(8, R.xml.device_info_memory,
-                    Memory.class.getName(),
-                    R.drawable.ic_settings_storage),
-            new IndexableRef(9, R.xml.power_usage_summary,
-                    PowerUsageSummary.class.getName(),
-                    R.drawable.ic_settings_battery),
-            new IndexableRef(10, R.xml.user_settings,
-                    UserSettings.class.getName(),
-                    R.drawable.ic_settings_multiuser),
-            new IndexableRef(11, R.xml.location_settings,
-                    LocationSettings.class.getName(),
-                    R.drawable.ic_settings_location),
-            new IndexableRef(12, R.xml.security_settings,
-                    SecuritySettings.class.getName(),
-                    R.drawable.ic_settings_security),
-            new IndexableRef(13, R.xml.language_settings,
-                    InputMethodAndLanguageSettings.class.getName(),
-                    R.drawable.ic_settings_language),
-            new IndexableRef(14, R.xml.privacy_settings,
-                    PrivacySettings.class.getName(),
-                    R.drawable.ic_settings_backup),
-            new IndexableRef(15, R.xml.date_time_prefs,
-                    DateTimeSettings.class.getName(),
-                    R.drawable.ic_settings_date_time),
-            new IndexableRef(16, R.xml.accessibility_settings,
-                    AccessibilitySettings.class.getName(),
-                    R.drawable.ic_settings_accessibility),
-            new IndexableRef(17, R.xml.print_settings,
-                    PrintSettingsFragment.class.getName(),
-                    com.android.internal.R.drawable.ic_print),
-            new IndexableRef(18, R.xml.development_prefs,
-                    DevelopmentSettings.class.getName(),
-                    R.drawable.ic_settings_development),
-            new IndexableRef(19, R.xml.device_info_settings,
-                    DeviceInfoSettings.class.getName(),
-                    R.drawable.ic_settings_about),
-    };
-
     @Override
     public boolean onPreferenceStartFragment(PreferenceFragment caller, Preference pref) {
         // Override the fragment title for Wallpaper settings
@@ -552,7 +480,6 @@ public class SettingsActivity extends Activity
             getWindow().setUiOptions(getIntent().getIntExtra(EXTRA_UI_OPTIONS, 0));
         }
 
-        Index.getInstance(this).addIndexableData(INDEXABLE_REFS);
         Index.getInstance(this).update();
 
         mAuthenticatorHelper = new AuthenticatorHelper();
@@ -913,22 +840,6 @@ public class SettingsActivity extends Activity
         }
     }
 
-    /**
-     * Switch the fragment pane to show the given preference fragment.
-     *
-     * (used for initial fragment)
-     *
-     * @param fragmentName The name of the fragment to display.
-     * @param args Optional arguments to supply to the fragment.
-     * @param validate true means that the fragment's Header needs to be validated.
-     * @param title The title of the fragment to display.
-     */
-    private void switchToHeader(String fragmentName, Bundle args, boolean validate,
-                                CharSequence title) {
-        setSelectedHeader(null);
-        switchToHeaderInner(fragmentName, args, validate, false, title);
-    }
-
     /**
      * Switch to a specific Header with taking care of validation, Title and BackStack
      */