1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
5  * except in compliance with the License. You may obtain a copy of the License at
6  *
7  *      http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software distributed under the
10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
11  * KIND, either express or implied. See the License for the specific language governing
12  * permissions and limitations under the License.
13  */
14 package com.android.settings.display;
15 
16 import android.app.ActivityManager;
17 import android.content.Context;
18 import android.content.pm.PackageManager;
19 import android.provider.Settings;
20 import android.support.v7.preference.Preference;
21 
22 import com.android.settings.R;
23 import com.android.settings.core.PreferenceController;
24 
25 public class VrDisplayPreferenceController extends PreferenceController {
26 
27     private static final String KEY_VR_DISPLAY_PREF = "vr_display_pref";
28 
VrDisplayPreferenceController(Context context)29     public VrDisplayPreferenceController(Context context) {
30         super(context);
31     }
32 
33     @Override
isAvailable()34     public boolean isAvailable() {
35         final PackageManager pm = mContext.getPackageManager();
36         return pm.hasSystemFeature(PackageManager.FEATURE_VR_MODE_HIGH_PERFORMANCE);
37     }
38 
39     @Override
getPreferenceKey()40     public String getPreferenceKey() {
41         return KEY_VR_DISPLAY_PREF;
42     }
43 
44     @Override
updateState(Preference preference)45     public void updateState(Preference preference) {
46         int currentUser = ActivityManager.getCurrentUser();
47         int current = Settings.Secure.getIntForUser(mContext.getContentResolver(),
48                 Settings.Secure.VR_DISPLAY_MODE, Settings.Secure.VR_DISPLAY_MODE_LOW_PERSISTENCE,
49                 currentUser);
50         if (current == 0) {
51             preference.setSummary(R.string.display_vr_pref_low_persistence);
52         } else {
53             preference.setSummary(R.string.display_vr_pref_off);
54         }
55     }
56 }
57