Index wi-fi preferences.

- Add xml file to index "Saved network" and "Wifi data usage"
preferences.
- Disable the "Saved network" if the access points is empty.
- Disable the "Wifi data usage" if there is no wifi radio.

Fixes: 146823365
Test: manual
Change-Id: I049d0463fd58f186dae1d5f54dcc914f52031da7

res/values/strings.xml

@@ -7319,6 +7319,8 @@
     <string name="keywords_wifi">wifi, wi-fi, network connection, internet, wireless, data, wi fi</string>
     <!-- Search keyword for "Open Network Notification" settings. [CHAR_LIMIT=NONE]-->
     <string name="keywords_wifi_notify_open_networks">Wi\u2011Fi notification, wifi notification</string>
+    <!-- Search keyword for "Wi-fi data usage" settings. [CHAR_LIMIT=NONE]-->
+    <string name="keywords_wifi_data_usage">data usage</string>
     <!-- Search keyword for "Vibrate on touch" settings. [CHAR_LIMIT=NONE]-->
     <string name="keywords_vibrate_on_touch">Stop vibration, tap, keyboard</string>
     <!-- Search keyword for "Time format" settings. [CHAR_LIMIT=NONE]-->

res/xml/wifi_settings.xml

@@ -17,19 +17,21 @@
 <PreferenceScreen
         xmlns:android="http://schemas.android.com/apk/res/android"
         xmlns:settings="http://schemas.android.com/apk/res-auto"
-        android:title="@string/wifi_settings"
+        android:title="@string/wifi_settings">
-        settings:keywords="@string/keywords_wifi">
 
     <com.android.settings.wifi.LinkablePreference
-        android:key="wifi_status_message"/>
+        android:key="wifi_status_message"
+        settings:searchable="false"/>
 
     <PreferenceCategory
         android:key="connected_access_point"
-        android:layout="@layout/preference_category_no_label"/>
+        android:layout="@layout/preference_category_no_label"
+        settings:searchable="false"/>
 
     <PreferenceCategory
         android:key="access_points"
-        android:layout="@layout/preference_category_no_label"/>
+        android:layout="@layout/preference_category_no_label"
+        settings:searchable="false"/>
 
     <Preference
         android:key="configure_settings"
@@ -44,5 +46,6 @@
 
     <com.android.settings.datausage.DataUsagePreference
         android:key="wifi_data_usage"
-        android:title="@string/wifi_data_usage"/>
+        android:title="@string/wifi_data_usage"
+        settings:keywords="@string/keywords_wifi_data_usage"/>
 </PreferenceScreen>

src/com/android/settings/wifi/WifiSettings.java

@@ -493,7 +493,7 @@ public class WifiSettings extends RestrictedSettingsFragment
             // could only be disconnected and be put in blacklists so it won't be used again.
             if (mSelectedAccessPoint.isSaved() || mSelectedAccessPoint.isEphemeral()) {
                 final int stringId = mSelectedAccessPoint.isEphemeral() ?
-                    R.string.wifi_disconnect_button_text : R.string.forget;
+                        R.string.wifi_disconnect_button_text : R.string.forget;
                 menu.add(Menu.NONE, MENU_ID_FORGET, 0 /* order */, stringId);
             }
 
@@ -1210,28 +1210,6 @@ public class WifiSettings extends RestrictedSettingsFragment
         ((AccessPointPreference) accessPoint.getTag()).onLevelChanged();
     }
 
-    public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
-            new BaseSearchIndexProvider() {
-                @Override
-                public List<SearchIndexableRaw> getRawDataToIndex(Context context,
-                        boolean enabled) {
-                    final List<SearchIndexableRaw> result = new ArrayList<>();
-                    final Resources res = context.getResources();
-
-                    // Add fragment title if we are showing this fragment
-                    if (res.getBoolean(R.bool.config_show_wifi_settings)) {
-                        SearchIndexableRaw data = new SearchIndexableRaw(context);
-                        data.title = res.getString(R.string.wifi_settings);
-                        data.screenTitle = res.getString(R.string.wifi_settings);
-                        data.keywords = res.getString(R.string.keywords_wifi);
-                        data.key = DATA_KEY_REFERENCE;
-                        result.add(data);
-                    }
-
-                    return result;
-                }
-            };
-
     private void handleConfigNetworkSubmitEvent(Intent data) {
         final WifiConfiguration wifiConfiguration = data.getParcelableExtra(
                 ConfigureAccessPointFragment.NETWORK_CONFIG_KEY);
@@ -1257,4 +1235,42 @@ public class WifiSettings extends RestrictedSettingsFragment
                 .setResultListener(this, CONFIG_NETWORK_REQUEST)
                 .launch();
     }
+
+    public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+            new BaseSearchIndexProvider(R.xml.wifi_settings) {
+                @Override
+                public List<SearchIndexableRaw> getRawDataToIndex(Context context,
+                        boolean enabled) {
+                    final List<SearchIndexableRaw> result = new ArrayList<>();
+                    final Resources res = context.getResources();
+
+                    // Add fragment title if we are showing this fragment
+                    if (res.getBoolean(R.bool.config_show_wifi_settings)) {
+                        SearchIndexableRaw data = new SearchIndexableRaw(context);
+                        data.title = res.getString(R.string.wifi_settings);
+                        data.screenTitle = res.getString(R.string.wifi_settings);
+                        data.keywords = res.getString(R.string.keywords_wifi);
+                        data.key = DATA_KEY_REFERENCE;
+                        result.add(data);
+                    }
+                    return result;
+                }
+
+                @Override
+                public List<String> getNonIndexableKeys(Context context) {
+                    final List<String> keys = super.getNonIndexableKeys(context);
+
+                    final WifiManager wifiManager = context.getSystemService(WifiManager.class);
+                    final List<AccessPoint> accessPoints = WifiSavedConfigUtils.getAllConfigs(
+                            context, wifiManager);
+                    if (accessPoints == null || accessPoints.size() <= 0) {
+                        keys.add(PREF_KEY_SAVED_NETWORKS);
+                    }
+
+                    if (!DataUsageUtils.hasWifiRadio(context)) {
+                        keys.add(PREF_KEY_DATA_USAGE);
+                    }
+                    return keys;
+                }
+            };
 }