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/*
* Copyright (C) 2018 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.dialer.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.widget.ScrollView;
/** {@link ScrollView} with a max height attribute. */
public class MaxHeightScrollView extends ScrollView {
private final int maxHeight;
public MaxHeightScrollView(Context context, @Nullable AttributeSet attrs) {
this(context, attrs, 0);
}
public MaxHeightScrollView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
this(context, attrs, defStyleAttr, 0);
}
public MaxHeightScrollView(
Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
if (isInEditMode()) {
maxHeight = -1;
return;
}
TypedArray array =
context.getTheme().obtainStyledAttributes(attrs, R.styleable.MaxHeightScrollView, 0, 0);
try {
maxHeight = array.getDimensionPixelSize(R.styleable.MaxHeightScrollView_maxHeight, -1);
} finally {
array.recycle();
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (maxHeight < 0) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
} else {
super.onMeasure(
widthMeasureSpec, MeasureSpec.makeMeasureSpec(maxHeight, MeasureSpec.AT_MOST));
}
}
}
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