1 /*
2  * Copyright (C) 2010 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.settings.nfc;
18 
19 import android.content.Context;
20 import android.nfc.NfcAdapter;
21 import android.provider.Settings;
22 
23 import androidx.annotation.VisibleForTesting;
24 import androidx.preference.SwitchPreference;
25 
26 /**
27  * NfcEnabler is a helper to manage the Nfc on/off checkbox preference. It turns on/off Nfc
28  * and ensures the summary of the preference reflects the current state.
29  */
30 public class NfcEnabler extends BaseNfcEnabler {
31     private final SwitchPreference mPreference;
32 
NfcEnabler(Context context, SwitchPreference preference)33     public NfcEnabler(Context context, SwitchPreference preference) {
34         super(context);
35         mPreference = preference;
36     }
37 
38     @Override
handleNfcStateChanged(int newState)39     protected void handleNfcStateChanged(int newState) {
40         switch (newState) {
41             case NfcAdapter.STATE_OFF:
42                 mPreference.setChecked(false);
43                 mPreference.setEnabled(isToggleable());
44                 break;
45             case NfcAdapter.STATE_ON:
46                 mPreference.setChecked(true);
47                 mPreference.setEnabled(true);
48                 break;
49             case NfcAdapter.STATE_TURNING_ON:
50                 mPreference.setChecked(true);
51                 mPreference.setEnabled(false);
52                 break;
53             case NfcAdapter.STATE_TURNING_OFF:
54                 mPreference.setChecked(false);
55                 mPreference.setEnabled(false);
56                 break;
57         }
58     }
59 
60     @VisibleForTesting
isToggleable()61     boolean isToggleable() {
62         if (NfcPreferenceController.isToggleableInAirplaneMode(mContext)
63                 || !NfcPreferenceController.shouldTurnOffNFCInAirplaneMode(mContext)) {
64             return true;
65         }
66         final int airplaneMode = Settings.Global.getInt(
67                 mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0);
68         return airplaneMode != 1;
69     }
70 }
71