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.core; 18 19 /** 20 * @deprecated This interface allows a {@link android.support.v7.preference.PreferenceGroup}'s 21 * controller to observe the availability of the {@link android.support.v7.preference.Preference}s 22 * inside it, hiding the group when all preferences become unavailable. In the future, 23 * {@link android.support.v7.preference.PreferenceGroup} will have native support for that 24 * functionality, removing the need for this interface. 25 */ 26 public interface PreferenceAvailabilityObserver { 27 28 /** 29 * Notifies the observer that the availability of the preference identified by {@code key} has 30 * been updated. 31 */ onPreferenceAvailabilityUpdated(String key, boolean available)32 void onPreferenceAvailabilityUpdated(String key, boolean available); 33 } 34