NfcTile.java revision 97705ce11664e9bbe6ab1c2eca8aa7cf01bcc84c 
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
18package com.android.systemui.qs.tiles;
19
20import android.content.BroadcastReceiver;
21import android.content.Context;
22import android.content.Intent;
23import android.content.IntentFilter;
24import android.content.pm.PackageManager;
25import android.graphics.drawable.Drawable;
26import android.nfc.NfcAdapter;
27import android.provider.Settings;
28import android.widget.Switch;
29
30import com.android.internal.logging.MetricsLogger;
31import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
32import com.android.systemui.R;
33import com.android.systemui.qs.QSTile;
34
35/** Quick settings tile: Enable/Disable NFC **/
36public class NfcTile extends QSTile<QSTile.BooleanState> {
37
38    private NfcAdapter mAdapter;
39
40    private boolean mListening;
41
42    public NfcTile(Host host) {
43        super(host);
44    }
45
46    @Override
47    public BooleanState newTileState() {
48        return new BooleanState();
49    }
50
51    @Override
52    public void setListening(boolean listening) {
53        mListening = listening;
54        if (mListening) {
55            mContext.registerReceiver(mNfcReceiver,
56                    new IntentFilter(NfcAdapter.ACTION_ADAPTER_STATE_CHANGED));
57            if (mAdapter == null) {
58                try {
59                    mAdapter = NfcAdapter.getNfcAdapter(mContext);
60                } catch (UnsupportedOperationException e) {
61                    mAdapter = null;
62                }
63            }
64        } else {
65            mContext.unregisterReceiver(mNfcReceiver);
66        }
67    }
68
69    @Override
70    public boolean isAvailable() {
71        return mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_NFC);
72    }
73
74    @Override
75    protected void handleUserSwitch(int newUserId) {
76    }
77
78    @Override
79    public Intent getLongClickIntent() {
80        return new Intent(Settings.ACTION_NFC_SETTINGS);
81    }
82
83    @Override
84    protected void handleClick() {
85        if (mAdapter == null) return;
86        MetricsLogger.action(mContext, getMetricsCategory(), !mState.value);
87        if (!mAdapter.isEnabled()) {
88            mAdapter.enable();
89        } else {
90            mAdapter.disable();
91        }
92    }
93
94    @Override
95    protected void handleSecondaryClick() {
96        handleClick();
97    }
98
99    @Override
100    public CharSequence getTileLabel() {
101        return mContext.getString(R.string.quick_settings_nfc_label);
102    }
103
104    @Override
105    protected void handleUpdateState(BooleanState state, Object arg) {
106        final Drawable mEnable = mContext.getDrawable(R.drawable.ic_qs_nfc_enabled);
107        final Drawable mDisable = mContext.getDrawable(R.drawable.ic_qs_nfc_disabled);
108        state.value = mAdapter == null ? false : mAdapter.isEnabled();
109        state.label = mContext.getString(R.string.quick_settings_nfc_label);
110        state.icon = new DrawableIcon(state.value ? mEnable : mDisable);
111        state.minimalAccessibilityClassName = state.expandedAccessibilityClassName
112                = Switch.class.getName();
113        state.contentDescription = state.label;
114    }
115
116    @Override
117    public int getMetricsCategory() {
118        return MetricsEvent.QS_NFC;
119    }
120
121    @Override
122    protected String composeChangeAnnouncement() {
123        if (mState.value) {
124            return mContext.getString(R.string.quick_settings_nfc_on);
125        } else {
126            return mContext.getString(R.string.quick_settings_nfc_off);
127        }
128    }
129
130    private BroadcastReceiver mNfcReceiver = new BroadcastReceiver() {
131        @Override
132        public void onReceive(Context context, Intent intent) {
133            refreshState();
134        }
135    };
136}
137