Signal-Android/app/src/main/java/org/thoughtcrime/securesms/components/MaxHeightScrollView.java

43 lines
1.2 KiB
Java

package org.thoughtcrime.securesms.components;
import android.content.Context;
import android.content.res.TypedArray;
import androidx.annotation.Nullable;
import android.util.AttributeSet;
import android.widget.ScrollView;
import org.thoughtcrime.securesms.R;
public class MaxHeightScrollView extends ScrollView {
private int maxHeight = -1;
public MaxHeightScrollView(Context context) {
super(context);
initialize(null);
}
public MaxHeightScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
initialize(attrs);
}
private void initialize(@Nullable AttributeSet attrs) {
if (attrs != null) {
TypedArray typedArray = getContext().getTheme().obtainStyledAttributes(attrs, R.styleable.MaxHeightScrollView, 0, 0);
maxHeight = typedArray.getDimensionPixelOffset(R.styleable.MaxHeightScrollView_scrollView_maxHeight, -1);
typedArray.recycle();
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (maxHeight >= 0) {
heightMeasureSpec = MeasureSpec.makeMeasureSpec(maxHeight, MeasureSpec.AT_MOST);
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}