1 /* 2 * Copyright (C) 2016 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.users; 17 18 import android.content.Context; 19 import android.provider.Settings.Global; 20 import android.support.v7.preference.Preference; 21 22 import com.android.settings.core.PreferenceControllerMixin; 23 import com.android.settingslib.RestrictedSwitchPreference; 24 import com.android.settingslib.core.AbstractPreferenceController; 25 import com.android.settingslib.core.lifecycle.Lifecycle; 26 import com.android.settingslib.core.lifecycle.LifecycleObserver; 27 import com.android.settingslib.core.lifecycle.events.OnPause; 28 import com.android.settingslib.core.lifecycle.events.OnResume; 29 30 public class AddUserWhenLockedPreferenceController extends AbstractPreferenceController 31 implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener, 32 LifecycleObserver, OnPause, OnResume { 33 34 private final String mPrefKey; 35 private final UserCapabilities mUserCaps; 36 private boolean mShouldUpdateUserList; 37 AddUserWhenLockedPreferenceController(Context context, String key, Lifecycle lifecycle)38 public AddUserWhenLockedPreferenceController(Context context, String key, Lifecycle lifecycle) { 39 super(context); 40 mPrefKey = key; 41 mUserCaps = UserCapabilities.create(context); 42 if (lifecycle != null) { 43 lifecycle.addObserver(this); 44 } 45 } 46 47 @Override updateState(Preference preference)48 public void updateState(Preference preference) { 49 RestrictedSwitchPreference restrictedSwitchPreference = 50 (RestrictedSwitchPreference) preference; 51 int value = Global.getInt(mContext.getContentResolver(), Global.ADD_USERS_WHEN_LOCKED, 0); 52 restrictedSwitchPreference.setChecked(value == 1); 53 restrictedSwitchPreference.setDisabledByAdmin( 54 mUserCaps.disallowAddUser() ? mUserCaps.getEnforcedAdmin() : null); 55 } 56 57 @Override onPreferenceChange(Preference preference, Object newValue)58 public boolean onPreferenceChange(Preference preference, Object newValue) { 59 Boolean value = (Boolean) newValue; 60 Global.putInt(mContext.getContentResolver(), 61 Global.ADD_USERS_WHEN_LOCKED, value != null && value ? 1 : 0); 62 return true; 63 } 64 65 @Override onPause()66 public void onPause() { 67 mShouldUpdateUserList = true; 68 } 69 70 @Override onResume()71 public void onResume() { 72 if (mShouldUpdateUserList) { 73 mUserCaps.updateAddUserCapabilities(mContext); 74 } 75 } 76 77 @Override isAvailable()78 public boolean isAvailable() { 79 return mUserCaps.isAdmin() && 80 (!mUserCaps.disallowAddUser() || mUserCaps.disallowAddUserSetByAdmin()); 81 } 82 83 @Override getPreferenceKey()84 public String getPreferenceKey() { 85 return mPrefKey; 86 } 87 } 88