Home | History | Annotate | Download | only in wifi 
      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 
     17 package com.android.settings.wifi;
     18 
     19 import android.content.BroadcastReceiver;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.content.IntentFilter;
     23 import android.net.wifi.WifiManager;
     24 import android.support.annotation.VisibleForTesting;
     25 import com.android.settings.R;
     26 import com.android.settings.widget.SummaryUpdater;
     27 import com.android.settingslib.wifi.WifiStatusTracker;
     28 
     29 import static android.net.wifi.WifiInfo.removeDoubleQuotes;
     30 
     31 /**
     32  * Helper class that listeners to wifi callback and notify client when there is update in
     33  * wifi summary info.
     34  */
     35 public final class WifiSummaryUpdater extends SummaryUpdater {
     36 
     37     private final WifiStatusTracker mWifiTracker;
     38     private final BroadcastReceiver mReceiver;
     39 
     40     private static final IntentFilter INTENT_FILTER;
     41     static {
     42         INTENT_FILTER = new IntentFilter();
     43         INTENT_FILTER.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
     44         INTENT_FILTER.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
     45         INTENT_FILTER.addAction(WifiManager.RSSI_CHANGED_ACTION);
     46     }
     47 
     48     public WifiSummaryUpdater(Context context, OnSummaryChangeListener listener) {
     49         this(context, listener, new WifiStatusTracker(context.getSystemService(WifiManager.class)));
     50     }
     51 
     52     @VisibleForTesting
     53     public WifiSummaryUpdater(Context context, OnSummaryChangeListener listener,
     54         WifiStatusTracker wifiTracker) {
     55         super(context, listener);
     56         mWifiTracker = wifiTracker;
     57         mReceiver = new BroadcastReceiver() {
     58             @Override
     59             public void onReceive(Context context, Intent intent) {
     60                 mWifiTracker.handleBroadcast(intent);
     61                 notifyChangeIfNeeded();
     62             }
     63         };
     64     }
     65 
     66     @Override
     67     public void register(boolean register) {
     68         if (register) {
     69             mContext.registerReceiver(mReceiver, INTENT_FILTER);
     70         } else {
     71             mContext.unregisterReceiver(mReceiver);
     72         }
     73     }
     74 
     75     @Override
     76     public String getSummary() {
     77         if (!mWifiTracker.enabled) {
     78             return mContext.getString(R.string.switch_off_text);
     79         }
     80         if (!mWifiTracker.connected) {
     81             return mContext.getString(R.string.disconnected);
     82         }
     83         return removeDoubleQuotes(mWifiTracker.ssid);
     84     }
     85 
     86 }
     87