1 /*
2  * Copyright (C) 2021 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.systemui.statusbar.notification.collection.render
18 
19 /**
20  * This is an object which provides callbacks for certain important events related to the
21  * notification shade, such as notifications being removed by the user, or the shade becoming empty.
22  */
23 interface NotifShadeEventSource {
24     /**
25      * Registers a callback to be invoked when the last notification has been removed from
26      * the shade for any reason
27      */
setShadeEmptiedCallbacknull28     fun setShadeEmptiedCallback(callback: Runnable)
29 
30     /**
31      * Registers a callback to be invoked when a notification has been removed from
32      * the shade by a user action
33      */
34     fun setNotifRemovedByUserCallback(callback: Runnable)
35 }