Add a few pages to search index.

- Data saver
- A few special permission access pages
   - Picture-in-picture
   - Premium sms
   - do not disturb access
- And a unrelated cleanup: move EmptyTextFragment from
  notification/ to widget/

Bug: 70720645
Test: robotests
Change-Id: I6a87f712bf81f9fd32fa9a3826fba851ca748409

src/com/android/settings/notification/EmptyTextSettings.java

@@ -1,50 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.settings.notification;
-
-import android.annotation.Nullable;
-import android.os.Bundle;
-import android.util.TypedValue;
-import android.view.Gravity;
-import android.view.View;
-import android.view.ViewGroup;
-import android.view.ViewGroup.LayoutParams;
-import android.widget.TextView;
-
-import com.android.settings.SettingsPreferenceFragment;
-
-public abstract class EmptyTextSettings extends SettingsPreferenceFragment {
-
-    private TextView mEmpty;
-
-    @Override
-    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
-        super.onViewCreated(view, savedInstanceState);
-        mEmpty = new TextView(getContext());
-        mEmpty.setGravity(Gravity.CENTER);
-        TypedValue value = new TypedValue();
-        getContext().getTheme().resolveAttribute(android.R.attr.textAppearanceMedium, value, true);
-        mEmpty.setTextAppearance(value.resourceId);
-        ((ViewGroup) view.findViewById(android.R.id.list_container)).addView(mEmpty,
-                new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
-        setEmptyView(mEmpty);
-    }
-
-    protected void setEmptyText(int text) {
-        mEmpty.setText(text);
-    }
-}

src/com/android/settings/notification/ZenAccessSettings.java

@@ -36,6 +36,7 @@ import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.RemoteException;
+import android.provider.SearchIndexableResource;
 import android.provider.Settings.Secure;
 import android.text.TextUtils;
 import android.util.ArraySet;
@@ -47,7 +48,11 @@ import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
 import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
 import com.android.settings.overlay.FeatureFactory;
+import com.android.settings.search.BaseSearchIndexProvider;
+import com.android.settings.search.Indexable;
 import com.android.settings.widget.AppSwitchPreference;
+import com.android.settings.widget.EmptyTextSettings;
+import com.android.settingslib.search.SearchIndexable;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -58,6 +63,7 @@ import androidx.preference.Preference.OnPreferenceChangeListener;
 import androidx.preference.PreferenceScreen;
 import androidx.preference.SwitchPreference;
 
+@SearchIndexable
 public class ZenAccessSettings extends EmptyTextSettings {
     private final String TAG = "ZenAccessSettings";
 
@@ -336,4 +342,18 @@ public class ZenAccessSettings extends EmptyTextSettings {
                     .create();
         }
     }
+
+    public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+            new BaseSearchIndexProvider() {
+                @Override
+                public List<SearchIndexableResource> getXmlResourcesToIndex(Context context,
+                        boolean enabled) {
+                    final ArrayList<SearchIndexableResource> result = new ArrayList<>();
+
+                    final SearchIndexableResource sir = new SearchIndexableResource(context);
+                    sir.xmlResId = R.xml.zen_access_settings;
+                    result.add(sir);
+                    return result;
+                }
+            };
 }