Add ability to show/hide items for Special Access.

This adds five new boolean flags:
config_show_high_power_apps
config_show_device_administrators
config_show_premium_sms
config_show_data_saver
config_show_enabled_vr_listeners

Which when individually set to false, will hide the respectively item
from "Special Access" in Apps & notifications. It will also hide them
from surfacing in search results.

Bug: 70907131
Test: Updated SpecialAccessSettingsTest, and created:
HighPowerAppsControllerTest
DeviceAdministratorsControllerTest
PremiumSmsControllerTest
DataSaverControllerTest
EnabledVrListenersControllerTest

Change-Id: I5ad58755643e71d4fb71774404ad96c127440ae4

src/com/android/settings/applications/DataSaverController.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2017 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.applications;
+
+import android.content.Context;
+import android.support.annotation.VisibleForTesting;
+
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.R;
+
+public class DataSaverController extends BasePreferenceController {
+
+    @VisibleForTesting static final String KEY_DATA_SAVER = "data_saver";
+
+    public DataSaverController(Context context) {
+        super(context, KEY_DATA_SAVER);
+    }
+
+    @AvailabilityStatus
+    public int getAvailabilityStatus() {
+        return mContext.getResources().getBoolean(R.bool.config_show_data_saver)
+                ? AVAILABLE
+                : DISABLED_UNSUPPORTED;
+    }
+}

src/com/android/settings/applications/DeviceAdministratorsController.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2017 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.applications;
+
+import android.content.Context;
+import android.support.annotation.VisibleForTesting;
+
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.R;
+
+public class DeviceAdministratorsController extends BasePreferenceController {
+
+    @VisibleForTesting static final String KEY_DEVICE_ADMIN = "device_administrators";
+
+    public DeviceAdministratorsController(Context context) {
+        super(context, KEY_DEVICE_ADMIN);
+    }
+
+    @AvailabilityStatus
+    public int getAvailabilityStatus() {
+        return mContext.getResources().getBoolean(R.bool.config_show_device_administrators)
+                ? AVAILABLE
+                : DISABLED_UNSUPPORTED;
+    }
+}

src/com/android/settings/applications/EnabledVrListenersController.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2017 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.applications;
+
+import android.content.Context;
+import android.support.annotation.VisibleForTesting;
+
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.R;
+
+public class EnabledVrListenersController extends BasePreferenceController {
+
+    @VisibleForTesting static final String KEY_ENABLED_VR_LISTENERS = "enabled_vr_listeners";
+
+    public EnabledVrListenersController(Context context) {
+        super(context, KEY_ENABLED_VR_LISTENERS);
+    }
+
+    @AvailabilityStatus
+    public int getAvailabilityStatus() {
+        return mContext.getResources().getBoolean(R.bool.config_show_enabled_vr_listeners)
+                ? AVAILABLE
+                : DISABLED_UNSUPPORTED;
+    }
+}

src/com/android/settings/applications/HighPowerAppsController.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2017 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.applications;
+
+import android.content.Context;
+import android.support.annotation.VisibleForTesting;
+
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.R;
+
+public class HighPowerAppsController extends BasePreferenceController {
+
+    @VisibleForTesting static final String KEY_HIGH_POWER_APPS = "high_power_apps";
+
+    public HighPowerAppsController(Context context) {
+        super(context, KEY_HIGH_POWER_APPS);
+    }
+
+    @AvailabilityStatus
+    public int getAvailabilityStatus() {
+        return mContext.getResources().getBoolean(R.bool.config_show_high_power_apps)
+                ? AVAILABLE
+                : DISABLED_UNSUPPORTED;
+    }
+}

src/com/android/settings/applications/PremiumSmsController.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2017 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.applications;
+
+import android.content.Context;
+import android.support.annotation.VisibleForTesting;
+
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.R;
+
+public class PremiumSmsController extends BasePreferenceController {
+
+    @VisibleForTesting static final String KEY_PREMIUM_SMS = "premium_sms";
+
+    public PremiumSmsController(Context context) {
+        super(context, KEY_PREMIUM_SMS);
+    }
+
+    @AvailabilityStatus
+    public int getAvailabilityStatus() {
+        return mContext.getResources().getBoolean(R.bool.config_show_premium_sms)
+                ? AVAILABLE
+                : DISABLED_UNSUPPORTED;
+    }
+}

src/com/android/settings/applications/SpecialAccessSettings.java

@@ -17,6 +17,7 @@ package com.android.settings.applications;
 import android.app.ActivityManager;
 import android.content.Context;
 import android.os.Bundle;
+import android.support.annotation.NonNull;
 import android.provider.SearchIndexableResource;
 import android.support.v7.preference.Preference;
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
@@ -31,7 +32,6 @@ import java.util.List;
 public class SpecialAccessSettings extends DashboardFragment {
 
     private static final String TAG = "SpecialAccessSettings";
-
     private static final String[] DISABLED_FEATURES_LOW_RAM =
             new String[]{"notification_access", "zen_access", "enabled_vr_listeners",
                     "picture_in_picture"};
@@ -62,7 +62,18 @@ public class SpecialAccessSettings extends DashboardFragment {
 
     @Override
     protected List<AbstractPreferenceController> getPreferenceControllers(Context context) {
-        return null;
+        return buildPreferenceControllers(context);
+    }
+
+    private static List<AbstractPreferenceController> buildPreferenceControllers(
+            @NonNull Context context) {
+        final List<AbstractPreferenceController> controllers = new ArrayList<>();
+        controllers.add(new HighPowerAppsController(context));
+        controllers.add(new DeviceAdministratorsController(context));
+        controllers.add(new PremiumSmsController(context));
+        controllers.add(new DataSaverController(context));
+        controllers.add(new EnabledVrListenersController(context));
+        return controllers;
     }
 
     @Override
@@ -82,5 +93,11 @@ public class SpecialAccessSettings extends DashboardFragment {
                     result.add(sir);
                     return result;
                 }
+
+                @Override
+                public List<AbstractPreferenceController> getPreferenceControllers(
+                        Context context) {
+                    return buildPreferenceControllers(context);
+                }
             };
 }