1 /*
2  * Copyright (C) 2020 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.server.wm;
18 
19 /**
20  * Interface for listening to changes in a {@link WindowContainer}. A usage of this listener is
21  * to receive the changes and propagate them to the client side.
22  */
23 interface WindowContainerListener extends ConfigurationContainerListener {
24 
25     /** @see WindowContainer#onDisplayChanged(DisplayContent) */
onDisplayChanged(DisplayContent dc)26     default void onDisplayChanged(DisplayContent dc) {}
27 
28     /** Called when {@link WindowContainer#removeImmediately()} is invoked. */
onRemoved()29     default void onRemoved() {}
30 }
31