using System.Collections.Specialized;
using System.ComponentModel;
using CoreGraphics;
using Microsoft.Maui.Controls.Platform;
using Microsoft.Maui.Controls.Shapes;
 
#if __MOBILE__
namespace Microsoft.Maui.Controls.Compatibility.Platform.iOS
#else
namespace Microsoft.Maui.Controls.Compatibility.Platform.MacOS
#endif
{
	[System.Obsolete(Compatibility.Hosting.MauiAppBuilderExtensions.UseMapperInstead)]
	public class PolylineRenderer : ShapeRenderer<Polyline, PolylineView>
	{
		PointCollection _points;
 
		[Microsoft.Maui.Controls.Internals.Preserve(Conditional = true)]
		public PolylineRenderer()
		{
 
		}
 
		protected override void OnElementChanged(ElementChangedEventArgs<Polyline> args)
		{
			if (Control == null && args.NewElement != null)
			{
				SetNativeControl(new PolylineView());
			}
 
			base.OnElementChanged(args);
 
			if (args.NewElement != null)
			{
				UpdatePoints();
				UpdateFillRule();
			}
		}
 
		protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs args)
		{
			base.OnElementPropertyChanged(sender, args);
 
			if (args.PropertyName == Polyline.PointsProperty.PropertyName)
				UpdatePoints();
			else if (args.PropertyName == Polyline.FillRuleProperty.PropertyName)
				UpdateFillRule();
		}
 
		protected override void Dispose(bool disposing)
		{
			base.Dispose(disposing);
 
			if (disposing)
			{
				if (_points != null)
				{
					_points.CollectionChanged -= OnCollectionChanged;
					_points = null;
				}
			}
		}
 
		void UpdatePoints()
		{
			if (_points != null)
				_points.CollectionChanged -= OnCollectionChanged;
 
			_points = Element.Points;
 
			_points.CollectionChanged += OnCollectionChanged;
 
			Control.UpdatePoints(_points.ToCGPoints());
		}
 
		public void UpdateFillRule()
		{
			Control.UpdateFillMode(Element.FillRule == FillRule.Nonzero);
		}
 
		void OnCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
		{
			UpdatePoints();
		}
	}
 
	public class PolylineView : ShapeView
	{
		public void UpdatePoints(CGPoint[] points)
		{
			var path = new CGPath();
			path.AddLines(points);
			ShapeLayer.UpdateShape(path);
		}
 
		public void UpdateFillMode(bool fillMode)
		{
			ShapeLayer.UpdateFillMode(fillMode);
		}
	}
}