1 /* 2 * Copyright (C) 2013 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.systemui.settings; 18 19 import android.app.ActivityManager; 20 import android.content.BroadcastReceiver; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.content.IntentFilter; 24 import android.os.UserHandle; 25 26 public abstract class CurrentUserTracker extends BroadcastReceiver { 27 28 private Context mContext; 29 private int mCurrentUserId; 30 31 public CurrentUserTracker(Context context) { 32 mContext = context; 33 } 34 35 public int getCurrentUserId() { 36 return mCurrentUserId; 37 } 38 39 @Override 40 public void onReceive(Context context, Intent intent) { 41 if (Intent.ACTION_USER_SWITCHED.equals(intent.getAction())) { 42 int oldUserId = mCurrentUserId; 43 mCurrentUserId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0); 44 if (oldUserId != mCurrentUserId) { 45 onUserSwitched(mCurrentUserId); 46 } 47 } 48 } 49 50 public void startTracking() { 51 mCurrentUserId = ActivityManager.getCurrentUser(); 52 IntentFilter filter = new IntentFilter(Intent.ACTION_USER_SWITCHED); 53 mContext.registerReceiver(this, filter); 54 } 55 56 public void stopTracking() { 57 mContext.unregisterReceiver(this); 58 } 59 60 public abstract void onUserSwitched(int newUserId); 61 62 public boolean isCurrentUserOwner() { 63 return mCurrentUserId == UserHandle.USER_OWNER; 64 } 65 } 66
