1 /*
2  * Copyright (C) 2024 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.shade.shared.model
18 
19 /** Enumerates all known modes of operation of the shade. */
20 sealed interface ShadeMode {
21 
22     /**
23      * The single or "accordion" shade where the QS and notification parts are in two vertically
24      * stacked panels and the user can swipe up and down to expand or collapse between the two
25      * parts.
26      */
27     data object Single : ShadeMode
28 
29     /**
30      * The split shade where, on large screens and unfolded foldables, the QS and notification parts
31      * are placed side-by-side and expand/collapse as a single panel.
32      */
33     data object Split : ShadeMode
34 
35     /**
36      * The dual shade where the QS and notification parts each have their own independently
37      * expandable/collapsible panel on either side of the large screen / unfolded device or sharing
38      * a space on a small screen or folded device.
39      */
40     data object Dual : ShadeMode
41 
42     companion object {
dualnull43         @JvmStatic fun dual(): Dual = Dual
44     }
45 }
46