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 import javax.inject.Inject
20 
21 /** An interface by which the pipeline can make updates to the notification root view. */
22 interface NotifStackController {
23     /** Provides stats about the list of notifications attached to the shade */
24     fun setNotifStats(stats: NotifStats)
25 }
26 
27 /** Data provided to the NotificationRootController whenever the pipeline runs */
28 data class NotifStats(
29     val numActiveNotifs: Int,
30     val hasNonClearableAlertingNotifs: Boolean,
31     val hasClearableAlertingNotifs: Boolean,
32     val hasNonClearableSilentNotifs: Boolean,
33     val hasClearableSilentNotifs: Boolean
34 ) {
35     companion object {
36         @JvmStatic
37         val empty = NotifStats(0, false, false, false, false)
38     }
39 }
40 
41 /**
42  * An implementation of NotifStackController which provides default, no-op implementations of each
43  * method.  This is used by ArcSystemUI so that that implementation can opt-in to overriding
44  * methods, rather than forcing us to add no-op implementations in their implementation every time
45  * a method is added.
46  */
47 open class DefaultNotifStackController @Inject constructor() : NotifStackController {
48     override fun setNotifStats(stats: NotifStats) {}
49 }