1 /*
2  * Copyright 2019 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.car.apps.common;
18 
19 import androidx.annotation.Nullable;
20 
21 /**
22  * Provides methods for interacting with a control bar that can be expanded or collapsed
23  */
24 public interface ExpandableControlBar extends CarControlBar {
25 
26     /**
27      * Callback for when the control bar is expanded or collapsed. This is called before the
28      * ControlBar begins animating.
29      */
30     interface ExpandCollapseCallback {
onExpandCollapse(boolean expanding)31         void onExpandCollapse(boolean expanding);
32     }
33 
34     /**
35      * Register a listener for expand/collapse. Callback can be unregistered by passing null.
36      */
registerExpandCollapseCallback(@ullable ExpandCollapseCallback callback)37     void registerExpandCollapseCallback(@Nullable ExpandCollapseCallback callback);
38 
39     /**
40      * Collapses the control bar.
41      */
close()42     void close();
43 }
44