Add search provider for system dashboard fragment.

Bug: 31801428
Test: manual
Test:make RunSettingsRoboTests
Change-Id: I6a80d64ed9755f4ddcfde33a82be04cfcbf0495b

res/xml/system_dashboard_fragment.xml

@@ -14,7 +14,9 @@
      limitations under the License.
 -->
 
-<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+<PreferenceScreen
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:title="@string/header_category_system">
 
     <!-- System updates -->
     <com.android.settings.dashboard.DashboardTilePreference

src/com/android/settings/dashboard/DashboardAdapter.java

@@ -176,7 +176,8 @@ public class DashboardAdapter extends RecyclerView.Adapter<DashboardAdapter.Dash
         resetCount();
         for (int i = 0; mCategories != null && i < mCategories.size(); i++) {
             DashboardCategory category = mCategories.get(i);
-            countItem(category, R.layout.dashboard_category, mIsShowingAll, NS_ITEMS);
+            countItem(category, R.layout.dashboard_category, mIsShowingAll
+                    && !TextUtils.isEmpty(category.title), NS_ITEMS);
             for (int j = 0; j < category.tiles.size(); j++) {
                 Tile tile = category.tiles.get(j);
                 countItem(tile, R.layout.dashboard_tile, mIsShowingAll

src/com/android/settings/search/Ranking.java

@@ -51,6 +51,7 @@ import com.android.settings.notification.ZenModeSettings;
 import com.android.settings.notification.ZenModeVisualInterruptionSettings;
 import com.android.settings.print.PrintSettingsFragment;
 import com.android.settings.sim.SimSettings;
+import com.android.settings.system.SystemDashboardFragment;
 import com.android.settings.users.UserSettings;
 import com.android.settings.wifi.AdvancedWifiSettings;
 import com.android.settings.wifi.SavedAccessPointsWifiSettings;
@@ -185,6 +186,8 @@ public final class Ranking {
         sRankMap.put(DeviceInfoSettings.class.getName(), RANK_DEVICE_INFO);
         sRankMap.put(LegalSettings.class.getName(), RANK_DEVICE_INFO);
 
+        sRankMap.put(SystemDashboardFragment.class.getName(), RANK_DEVICE_INFO);
+
         sBaseRankMap.put("com.android.settings", 0);
     }
 

src/com/android/settings/search/SearchIndexableResources.java

@@ -51,6 +51,7 @@ import com.android.settings.notification.ZenModeSettings;
 import com.android.settings.notification.ZenModeVisualInterruptionSettings;
 import com.android.settings.print.PrintSettingsFragment;
 import com.android.settings.sim.SimSettings;
+import com.android.settings.system.SystemDashboardFragment;
 import com.android.settings.users.UserSettings;
 import com.android.settings.wifi.AdvancedWifiSettings;
 import com.android.settings.wifi.SavedAccessPointsWifiSettings;
@@ -326,6 +327,13 @@ public final class SearchIndexableResources {
                         R.xml.zen_mode_visual_interruptions_settings,
                         ZenModeVisualInterruptionSettings.class.getName(),
                         R.drawable.ic_settings_notifications));
+
+        sResMap.put(SystemDashboardFragment.class.getName(),
+                new SearchIndexableResource(
+                        Ranking.getRankForClassName(SystemDashboardFragment.class.getName()),
+                        NO_DATA_RES_ID,
+                        SystemDashboardFragment.class.getName(),
+                        R.drawable.ic_settings_about));
     }
 
     private SearchIndexableResources() {

src/com/android/settings/system/SystemDashboardFragment.java

@@ -19,6 +19,7 @@ import android.app.Activity;
 import android.content.Context;
 import android.os.Bundle;
 import android.os.UserManager;
+import android.provider.SearchIndexableResource;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceScreen;
 import android.text.TextUtils;
@@ -30,11 +31,14 @@ import com.android.settings.dashboard.DashboardFeatureProvider;
 import com.android.settings.dashboard.DashboardTilePreference;
 import com.android.settings.deviceinfo.SystemUpdatePreferenceController;
 import com.android.settings.overlay.FeatureFactory;
+import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.search.Indexable;
 import com.android.settingslib.drawer.DashboardCategory;
 import com.android.settingslib.drawer.SettingsDrawerActivity;
 import com.android.settingslib.drawer.Tile;
 
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 public class SystemDashboardFragment extends SettingsPreferenceFragment
@@ -135,4 +139,35 @@ public class SystemDashboardFragment extends SettingsPreferenceFragment
             screen.addPreference(pref);
         }
     }
+
+    /**
+     * For Search.
+     */
+    public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+            new BaseSearchIndexProvider() {
+                @Override
+                public List<SearchIndexableResource> getXmlResourcesToIndex(
+                        Context context, boolean enabled) {
+                    if (!FeatureFactory.getFactory(context).getDashboardFeatureProvider(context)
+                            .isEnabled()) {
+                        return null;
+                    }
+                    final SearchIndexableResource sir = new SearchIndexableResource(context);
+                    sir.xmlResId = R.xml.system_dashboard_fragment;
+                    return Arrays.asList(sir);
+                }
+
+                @Override
+                public List<String> getNonIndexableKeys(Context context) {
+                    if (!FeatureFactory.getFactory(context).getDashboardFeatureProvider(context)
+                            .isEnabled()) {
+                        return null;
+                    }
+                    final SystemUpdatePreferenceController systemUpdatePreferenceController =
+                            new SystemUpdatePreferenceController(context, UserManager.get(context));
+                    final List<String> keys = new ArrayList<>();
+                    systemUpdatePreferenceController.updateNonIndexableKeys(keys);
+                    return keys;
+                }
+            };
 }