WifiSummaryUpdater.java revision c4c9f4d50eec659eb50f8ed671c27d8c6ef0c924 
1/*
2 * Copyright (C) 2017 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
17package com.android.settings.wifi;
18
19import android.content.BroadcastReceiver;
20import android.content.Context;
21import android.content.Intent;
22import android.content.IntentFilter;
23import android.net.wifi.WifiManager;
24import android.support.annotation.VisibleForTesting;
25import com.android.settings.R;
26import com.android.settings.widget.SummaryUpdater;
27import com.android.settingslib.wifi.WifiStatusTracker;
28
29/**
30 * Helper class that listeners to wifi callback and notify client when there is update in
31 * wifi summary info.
32 */
33public final class WifiSummaryUpdater extends SummaryUpdater {
34
35    private final WifiStatusTracker mWifiTracker;
36    private final BroadcastReceiver mReceiver;
37
38    private static final IntentFilter INTENT_FILTER;
39    static {
40        INTENT_FILTER = new IntentFilter();
41        INTENT_FILTER.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
42        INTENT_FILTER.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
43        INTENT_FILTER.addAction(WifiManager.RSSI_CHANGED_ACTION);
44    }
45
46    public WifiSummaryUpdater(Context context, OnSummaryChangeListener listener) {
47        this(context, listener, new WifiStatusTracker(context.getSystemService(WifiManager.class)));
48    }
49
50    @VisibleForTesting
51    public WifiSummaryUpdater(Context context, OnSummaryChangeListener listener,
52        WifiStatusTracker wifiTracker) {
53        super(context, listener);
54        mWifiTracker = wifiTracker;
55        mReceiver = new BroadcastReceiver() {
56            @Override
57            public void onReceive(Context context, Intent intent) {
58                mWifiTracker.handleBroadcast(intent);
59                notifyChangeIfNeeded();
60            }
61        };
62    }
63
64    @Override
65    public void register(boolean register) {
66        if (register) {
67            mContext.registerReceiver(mReceiver, INTENT_FILTER);
68        } else {
69            mContext.unregisterReceiver(mReceiver);
70        }
71    }
72
73    @Override
74    public String getSummary() {
75        if (!mWifiTracker.enabled) {
76            return mContext.getString(R.string.wifi_disabled_generic);
77        }
78        if (!mWifiTracker.connected) {
79            return mContext.getString(R.string.disconnected);
80        }
81        return mWifiTracker.ssid;
82    }
83
84}
85