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