using System;

using System.Collections.Generic;

using Assistance.Drawing;

namespace Assistance {

	public class Modifier: ActivePoint.Owner {

		public static readonly Pen pen = new Pen("Light Gray");

		public Modifier(Document document): base(document) {

			document.modifiers.Add(this);

		}

		public override void remove() {

			base.remove();

			document.modifiers.Remove(this);

		}

		public override void bringToFront() {

			document.modifiers.Remove(this);

			document.modifiers.Add(this);

		}

		public virtual void draw(Cairo.Context context) { }

		public virtual void getTransformFuncs(List<geometry.transformfunc> transformFuncs) { }</geometry.transformfunc>

		public List<track> modify(List<track> tracks) {

			List<track> outTracks = new List<track>();

			List<geometry.transformfunc> transformFuncs = new List<geometry.transformfunc>();</geometry.transformfunc></geometry.transformfunc>

			getTransformFuncs(transformFuncs);

			foreach(Track track in tracks)

				foreach(Geometry.TransformFunc transformFunc in transformFuncs)

					outTracks.Add(track.createChild(transformFunc));

			return outTracks;

		}

	}

}