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.services.telephony; 18 19 /** The inference used to track the hold state of a holdable object. */ 20 public interface Holdable { 21 22 /** Returns true if this holdable is a child node of other holdable. */ isChildHoldable()23 boolean isChildHoldable(); 24 25 /** 26 * Sets the holdable property for a holdable object. 27 * 28 * @param isHoldable true means this holdable object can be held. 29 */ setHoldable(boolean isHoldable)30 void setHoldable(boolean isHoldable); 31 } 32 33