1 /* 2 * Copyright (C) 2018 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.os.UserHandle; 22 import android.os.UserManager; 23 24 import com.android.settings.R; 25 import com.android.settingslib.RestrictedLockUtilsInternal; 26 import com.android.settingslib.RestrictedPreference; 27 28 /** 29 * AndroidBeanEnabler is a helper to manage the Android Beam preference. It turns on/off 30 * Android Beam and ensures the summary of the preference reflects the current state. 31 */ 32 public class AndroidBeamEnabler extends BaseNfcEnabler { 33 private final boolean mBeamDisallowedBySystem; 34 private final RestrictedPreference mPreference; 35 AndroidBeamEnabler(Context context, RestrictedPreference preference)36 public AndroidBeamEnabler(Context context, RestrictedPreference preference) { 37 super(context); 38 mPreference = preference; 39 mBeamDisallowedBySystem = RestrictedLockUtilsInternal.hasBaseUserRestriction(context, 40 UserManager.DISALLOW_OUTGOING_BEAM, UserHandle.myUserId()); 41 if (!isNfcAvailable()) { 42 // NFC is not supported 43 mPreference.setEnabled(false); 44 return; 45 } 46 if (mBeamDisallowedBySystem) { 47 mPreference.setEnabled(false); 48 } 49 } 50 51 @Override handleNfcStateChanged(int newState)52 protected void handleNfcStateChanged(int newState) { 53 switch (newState) { 54 case NfcAdapter.STATE_OFF: 55 mPreference.setEnabled(false); 56 mPreference.setSummary(R.string.nfc_disabled_summary); 57 break; 58 case NfcAdapter.STATE_ON: 59 if (mBeamDisallowedBySystem) { 60 mPreference.setDisabledByAdmin(null); 61 mPreference.setEnabled(false); 62 } else { 63 mPreference.checkRestrictionAndSetDisabled(UserManager.DISALLOW_OUTGOING_BEAM); 64 } 65 if (mNfcAdapter.isNdefPushEnabled() && mPreference.isEnabled()) { 66 mPreference.setSummary(R.string.android_beam_on_summary); 67 } else { 68 mPreference.setSummary(R.string.android_beam_off_summary); 69 } 70 break; 71 case NfcAdapter.STATE_TURNING_ON: 72 mPreference.setEnabled(false); 73 break; 74 case NfcAdapter.STATE_TURNING_OFF: 75 mPreference.setEnabled(false); 76 break; 77 } 78 } 79 } 80