using System;
using Microsoft.Maui.Graphics;
using static Microsoft.Maui.Primitives.Dimension;
 
namespace Microsoft.Maui.Layouts
{
	public abstract class LayoutManager : ILayoutManager
	{
		public LayoutManager(ILayout layout)
		{
			Layout = layout;
		}
 
		public ILayout Layout { get; }
 
		public abstract Size Measure(double widthConstraint, double heightConstraint);
		public abstract Size ArrangeChildren(Rect bounds);
 
		public static double ResolveConstraints(double externalConstraint, double explicitLength, double measuredLength, double min = Minimum, double max = Maximum)
		{
			var length = IsExplicitSet(explicitLength) ? explicitLength : measuredLength;
 
			if (max < length)
			{
				length = max;
			}
 
			if (min > length)
			{
				length = min;
			}
 
			return Math.Min(length, externalConstraint);
		}
	}
}