65 lines
2.0 KiB
Java
65 lines
2.0 KiB
Java
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.dialer.widget;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.support.annotation.Nullable;
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import android.util.AttributeSet;
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import android.widget.ScrollView;
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/** {@link ScrollView} with a max height attribute. */
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public class MaxHeightScrollView extends ScrollView {
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private final int maxHeight;
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public MaxHeightScrollView(Context context, @Nullable AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public MaxHeightScrollView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
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this(context, attrs, defStyleAttr, 0);
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}
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public MaxHeightScrollView(
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Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
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super(context, attrs, defStyleAttr, defStyleRes);
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if (isInEditMode()) {
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maxHeight = -1;
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return;
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}
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TypedArray array =
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context.getTheme().obtainStyledAttributes(attrs, R.styleable.MaxHeightScrollView, 0, 0);
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try {
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maxHeight = array.getDimensionPixelSize(R.styleable.MaxHeightScrollView_maxHeight, -1);
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} finally {
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array.recycle();
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}
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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if (maxHeight < 0) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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} else {
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super.onMeasure(
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widthMeasureSpec, MeasureSpec.makeMeasureSpec(maxHeight, MeasureSpec.AT_MOST));
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}
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}
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}
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