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      1 /*
      2  * Copyright (c) 2016, The Android Open Source Project
      3  * Contributed by the Paranoid Android Project
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at
      8  *
      9  *     http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  */
     17 
     18 package com.android.systemui.qs.tiles;
     19 
     20 import android.content.BroadcastReceiver;
     21 import android.content.Context;
     22 import android.content.Intent;
     23 import android.content.IntentFilter;
     24 import android.content.pm.PackageManager;
     25 import android.graphics.drawable.Drawable;
     26 import android.nfc.NfcAdapter;
     27 import android.provider.Settings;
     28 import android.widget.Switch;
     29 
     30 import com.android.internal.logging.MetricsLogger;
     31 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
     32 import com.android.systemui.R;
     33 import com.android.systemui.qs.QSHost;
     34 import com.android.systemui.plugins.qs.QSTile.BooleanState;
     35 import com.android.systemui.qs.tileimpl.QSTileImpl;
     36 
     37 /** Quick settings tile: Enable/Disable NFC **/
     38 public class NfcTile extends QSTileImpl<BooleanState> {
     39 
     40     private NfcAdapter mAdapter;
     41 
     42     private boolean mListening;
     43 
     44     public NfcTile(QSHost host) {
     45         super(host);
     46     }
     47 
     48     @Override
     49     public BooleanState newTileState() {
     50         return new BooleanState();
     51     }
     52 
     53     @Override
     54     public void handleSetListening(boolean listening) {
     55         mListening = listening;
     56         if (mListening) {
     57             mContext.registerReceiver(mNfcReceiver,
     58                     new IntentFilter(NfcAdapter.ACTION_ADAPTER_STATE_CHANGED));
     59         } else {
     60             mContext.unregisterReceiver(mNfcReceiver);
     61         }
     62     }
     63 
     64     @Override
     65     public boolean isAvailable() {
     66         return mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_NFC);
     67     }
     68 
     69     @Override
     70     protected void handleUserSwitch(int newUserId) {
     71     }
     72 
     73     @Override
     74     public Intent getLongClickIntent() {
     75         return new Intent(Settings.ACTION_NFC_SETTINGS);
     76     }
     77 
     78     @Override
     79     protected void handleClick() {
     80         if (!getAdapter().isEnabled()) {
     81             getAdapter().enable();
     82         } else {
     83             getAdapter().disable();
     84         }
     85     }
     86 
     87     @Override
     88     protected void handleSecondaryClick() {
     89         handleClick();
     90     }
     91 
     92     @Override
     93     public CharSequence getTileLabel() {
     94         return mContext.getString(R.string.quick_settings_nfc_label);
     95     }
     96 
     97     @Override
     98     protected void handleUpdateState(BooleanState state, Object arg) {
     99         final Drawable mEnable = mContext.getDrawable(R.drawable.ic_qs_nfc_enabled);
    100         final Drawable mDisable = mContext.getDrawable(R.drawable.ic_qs_nfc_disabled);
    101 
    102         if (getAdapter() == null) return;
    103         state.value = getAdapter().isEnabled();
    104         state.label = mContext.getString(R.string.quick_settings_nfc_label);
    105         state.icon = new DrawableIcon(state.value ? mEnable : mDisable);
    106         state.expandedAccessibilityClassName = Switch.class.getName();
    107         state.contentDescription = state.label;
    108     }
    109 
    110     @Override
    111     public int getMetricsCategory() {
    112         return MetricsEvent.QS_NFC;
    113     }
    114 
    115     @Override
    116     protected String composeChangeAnnouncement() {
    117         if (mState.value) {
    118             return mContext.getString(R.string.quick_settings_nfc_on);
    119         } else {
    120             return mContext.getString(R.string.quick_settings_nfc_off);
    121         }
    122     }
    123 
    124     private NfcAdapter getAdapter() {
    125         if (mAdapter == null) {
    126             try {
    127                 mAdapter = NfcAdapter.getNfcAdapter(mContext);
    128             } catch (UnsupportedOperationException e) {
    129                 mAdapter = null;
    130             }
    131         }
    132         return mAdapter;
    133     }
    134 
    135     private BroadcastReceiver mNfcReceiver = new BroadcastReceiver() {
    136         @Override
    137         public void onReceive(Context context, Intent intent) {
    138             refreshState();
    139         }
    140     };
    141 }
    142