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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.cellbroadcastreceiver;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.ScrollView;
/**
* Custom scroll view to display text with a max height inside a {@link CellBroadcastAlertDialog}
*/
public class CustomHeightScrollView extends ScrollView {
private int mMaximumHeight = 0;
public CustomHeightScrollView(Context context) {
super(context);
}
public CustomHeightScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public CustomHeightScrollView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public void setMaximumHeight(int height) {
mMaximumHeight = height;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
if (mMaximumHeight > 0) {
int measuredHeight = getMeasuredHeight();
if (getLayoutParams().height != LayoutParams.MATCH_PARENT) {
if (measuredHeight > mMaximumHeight) {
setMeasuredDimension(getMeasuredWidth(), mMaximumHeight);
return;
}
}
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
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