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 
22 import com.android.settingslib.widget.MainSwitchPreference;
23 
24 /**
25  * NfcEnabler is a helper to manage the Nfc on/off checkbox preference. It turns on/off Nfc
26  * and ensures the summary of the preference reflects the current state.
27  */
28 public class NfcEnabler extends BaseNfcEnabler {
29     private final MainSwitchPreference mPreference;
30 
NfcEnabler(Context context, MainSwitchPreference preference)31     public NfcEnabler(Context context, MainSwitchPreference preference) {
32         super(context);
33         mPreference = preference;
34     }
35 
36     @Override
handleNfcStateChanged(int newState)37     protected void handleNfcStateChanged(int newState) {
38         switch (newState) {
39             case NfcAdapter.STATE_OFF:
40                 mPreference.updateStatus(false);
41                 mPreference.setEnabled(true);
42                 break;
43             case NfcAdapter.STATE_ON:
44                 mPreference.updateStatus(true);
45                 mPreference.setEnabled(true);
46                 break;
47             case NfcAdapter.STATE_TURNING_ON:
48                 mPreference.updateStatus(true);
49                 mPreference.setEnabled(false);
50                 break;
51             case NfcAdapter.STATE_TURNING_OFF:
52                 mPreference.updateStatus(false);
53                 mPreference.setEnabled(false);
54                 break;
55         }
56     }
57 }
58