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using System;
using System.Collections.Generic;
using System.Linq.Expressions;
namespace Xamarin.Forms
{
public class BoundsConstraint
{
Func<Rectangle> _measureFunc;
BoundsConstraint()
{
}
internal IEnumerable<View> RelativeTo { get; set; }
public static BoundsConstraint FromExpression(Expression<Func<Rectangle>> expression, IEnumerable<View> parents = null)
{
Func<Rectangle> compiled = expression.Compile();
var result = new BoundsConstraint
{
_measureFunc = compiled,
RelativeTo = parents ?? ExpressionSearch.Default.FindObjects<View>(expression).ToArray() // make sure we have our own copy
};
return result;
}
internal Rectangle Compute()
{
return _measureFunc();
}
}
}
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