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.systemui.globalactions;
18 
19 import android.content.Context;
20 import android.util.AttributeSet;
21 import android.view.View;
22 import android.widget.ScrollView;
23 
24 /**
25  * When measured, this view sets the minimum height of its first child to be equal to its own
26  * target height.
27  *
28  * This ensures fall-through click handlers can be placed on this view's child component.
29  */
30 public class MinHeightScrollView extends ScrollView {
MinHeightScrollView(Context context, AttributeSet attrs)31     public MinHeightScrollView(Context context, AttributeSet attrs) {
32         super(context, attrs);
33     }
34 
35     @Override
onMeasure(int widthMeasureSpec, int heightMeasureSpec)36     public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
37         View firstChild = getChildAt(0);
38         if (firstChild != null) {
39             firstChild.setMinimumHeight(MeasureSpec.getSize(heightMeasureSpec));
40         }
41         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
42     }
43 }
44