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.PreferenceControllerMixin; 28 import com.android.settingslib.core.AbstractPreferenceController; 29 import com.android.settingslib.core.lifecycle.Lifecycle; 30 import com.android.settingslib.core.lifecycle.LifecycleObserver; 31 import com.android.settingslib.core.lifecycle.events.OnPause; 32 import com.android.settingslib.core.lifecycle.events.OnResume; 33 34 /** 35 * {@link PreferenceControllerMixin} to toggle Wifi Direct preference on Wi-Fi state. 36 */ 37 public class WifiP2pPreferenceController extends AbstractPreferenceController 38 implements PreferenceControllerMixin, LifecycleObserver, OnPause, OnResume { 39 40 private static final String KEY_WIFI_DIRECT = "wifi_direct"; 41 42 private final WifiManager mWifiManager; 43 @VisibleForTesting 44 final BroadcastReceiver mReceiver = new BroadcastReceiver() { 45 @Override 46 public void onReceive(Context context, Intent intent) { 47 togglePreferences(); 48 } 49 }; 50 private final IntentFilter mFilter = new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION); 51 52 private Preference mWifiDirectPref; 53 WifiP2pPreferenceController( Context context, Lifecycle lifecycle, WifiManager wifiManager)54 public WifiP2pPreferenceController( 55 Context context, Lifecycle lifecycle, WifiManager wifiManager) { 56 super(context); 57 mWifiManager = wifiManager; 58 lifecycle.addObserver(this); 59 } 60 61 @Override displayPreference(PreferenceScreen screen)62 public void displayPreference(PreferenceScreen screen) { 63 super.displayPreference(screen); 64 mWifiDirectPref = screen.findPreference(KEY_WIFI_DIRECT); 65 togglePreferences(); 66 } 67 68 @Override onResume()69 public void onResume() { 70 mContext.registerReceiver(mReceiver, mFilter); 71 } 72 73 @Override onPause()74 public void onPause() { 75 mContext.unregisterReceiver(mReceiver); 76 } 77 78 @Override isAvailable()79 public boolean isAvailable() { 80 // Always show preference. 81 return true; 82 } 83 @Override getPreferenceKey()84 public String getPreferenceKey() { 85 return KEY_WIFI_DIRECT; 86 } 87 togglePreferences()88 private void togglePreferences() { 89 if (mWifiDirectPref != null) { 90 mWifiDirectPref.setEnabled(mWifiManager.isWifiEnabled()); 91 } 92 } 93 } 94