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 package com.android.settings.wifi.p2p; 17 18 import android.content.BroadcastReceiver; 19 import android.content.Context; 20 import android.content.Intent; 21 import android.content.IntentFilter; 22 import android.net.wifi.WifiManager; 23 import android.support.annotation.VisibleForTesting; 24 import android.support.v7.preference.Preference; 25 import android.support.v7.preference.PreferenceScreen; 26 27 import com.android.settings.core.PreferenceController; 28 import com.android.settings.core.lifecycle.Lifecycle; 29 import com.android.settings.core.lifecycle.LifecycleObserver; 30 import com.android.settings.core.lifecycle.events.OnPause; 31 import com.android.settings.core.lifecycle.events.OnResume; 32 33 /** 34 * {@link PreferenceController} to toggle Wifi Direct preference on Wi-Fi state. 35 */ 36 public class WifiP2pPreferenceController extends PreferenceController implements 37 LifecycleObserver, OnPause, OnResume { 38 39 private static final String KEY_WIFI_DIRECT = "wifi_direct"; 40 41 private final WifiManager mWifiManager; 42 @VisibleForTesting 43 final BroadcastReceiver mReceiver = new BroadcastReceiver() { 44 @Override 45 public void onReceive(Context context, Intent intent) { 46 togglePreferences(); 47 } 48 }; 49 private final IntentFilter mFilter = new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION); 50 51 private Preference mWifiDirectPref; 52 WifiP2pPreferenceController( Context context, Lifecycle lifecycle, WifiManager wifiManager)53 public WifiP2pPreferenceController( 54 Context context, Lifecycle lifecycle, WifiManager wifiManager) { 55 super(context); 56 mWifiManager = wifiManager; 57 lifecycle.addObserver(this); 58 } 59 60 @Override displayPreference(PreferenceScreen screen)61 public void displayPreference(PreferenceScreen screen) { 62 super.displayPreference(screen); 63 mWifiDirectPref = screen.findPreference(KEY_WIFI_DIRECT); 64 togglePreferences(); 65 } 66 67 @Override onResume()68 public void onResume() { 69 mContext.registerReceiver(mReceiver, mFilter); 70 } 71 72 @Override onPause()73 public void onPause() { 74 mContext.unregisterReceiver(mReceiver); 75 } 76 77 @Override isAvailable()78 public boolean isAvailable() { 79 // Always show preference. 80 return true; 81 } 82 @Override getPreferenceKey()83 public String getPreferenceKey() { 84 return KEY_WIFI_DIRECT; 85 } 86 togglePreferences()87 private void togglePreferences() { 88 if (mWifiDirectPref != null) { 89 mWifiDirectPref.setEnabled(mWifiManager.isWifiEnabled()); 90 } 91 } 92 } 93