#region Using declarations
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Gui;
using NinjaTrader.Gui.Chart;
using NinjaTrader.Gui.SuperDom;
using NinjaTrader.Gui.Tools;
using NinjaTrader.Data;
using NinjaTrader.NinjaScript;
using NinjaTrader.Core.FloatingPoint;
using NinjaTrader.NinjaScript.DrawingTools;
#endregion

namespace NinjaTrader.NinjaScript.Indicators
{
/// <summary>
////This indicator created by Price Headley is described in his book “Big Trends in Trading“. 
////It acts as a enveloppe bands indicator. It can be used in any timeframe on typical 20 and 80 periods. 
////It is more effective on stocks trading. 
////The wider the bands are, greater is the volatility and you should expect trend continuation.
////Buy signals are taken while the price make consecutive upper bands piercing.
/// </summary>
	public class HeadleyBands : Indicator
	{
		private Series<double> upper;
		private Series<double> lower;
		private int	period;

		protected override void OnStateChange()
		{
			if (State == State.SetDefaults)
			{
				Description					= @"Price Headley Bands";
				Name						= "HeadleyBands";
				IsOverlay					= true;
				IsSuspendedWhileInactive	= true;
				Period						= 20;

				AddPlot(Brushes.Crimson, "BUP");
				AddPlot(Brushes.Crimson, "BDOWN");
			}
			if (State == State.DataLoaded)
			{
				upper	= new Series<double>(this);
				lower	= new Series<double>(this);
			}
		}

		protected override void OnBarUpdate()
		{
			upper[0]	= (High[0]*(1+2*(((High[0]-Low[0])/((High[0]+Low[0])/2))*1000)*0.001));
			BUP[0]		= SMA(upper,Period)[0];

			lower[0]	= (Low[0]*(1-2*(((High[0]-Low[0])/((High[0]+Low[0])/2))*1000)*0.001));
			BDOWN[0]	= SMA(lower,Period)[0];
		}

		#region Properties

		[Range(1, int.MaxValue), NinjaScriptProperty]
		[Display(ResourceType = typeof(Custom.Resource), Name = "Period", GroupName = "NinjaScriptParameters", Order = 0)]
		public int Period
		{ get; set; }

		[Browsable(false)]
		[XmlIgnore()]
		public Series<double> BUP
		{
			get { return Values[1]; }
		}

		[Browsable(false)]
		[XmlIgnore()]
		public Series<double> BDOWN
		{
			get { return Values[0]; }
		}
		#endregion
	}
}

#region NinjaScript generated code. Neither change nor remove.

namespace NinjaTrader.NinjaScript.Indicators
{
	public partial class Indicator : NinjaTrader.Gui.NinjaScript.IndicatorRenderBase
	{
		private HeadleyBands[] cacheHeadleyBands;
		public HeadleyBands HeadleyBands(int period)
		{
			return HeadleyBands(Input, period);
		}

		public HeadleyBands HeadleyBands(ISeries<double> input, int period)
		{
			if (cacheHeadleyBands != null)
				for (int idx = 0; idx < cacheHeadleyBands.Length; idx++)
					if (cacheHeadleyBands[idx] != null && cacheHeadleyBands[idx].Period == period && cacheHeadleyBands[idx].EqualsInput(input))
						return cacheHeadleyBands[idx];
			return CacheIndicator<HeadleyBands>(new HeadleyBands(){ Period = period }, input, ref cacheHeadleyBands);
		}
	}
}

namespace NinjaTrader.NinjaScript.MarketAnalyzerColumns
{
	public partial class MarketAnalyzerColumn : MarketAnalyzerColumnBase
	{
		public Indicators.HeadleyBands HeadleyBands(int period)
		{
			return indicator.HeadleyBands(Input, period);
		}

		public Indicators.HeadleyBands HeadleyBands(ISeries<double> input , int period)
		{
			return indicator.HeadleyBands(input, period);
		}
	}
}

namespace NinjaTrader.NinjaScript.Strategies
{
	public partial class Strategy : NinjaTrader.Gui.NinjaScript.StrategyRenderBase
	{
		public Indicators.HeadleyBands HeadleyBands(int period)
		{
			return indicator.HeadleyBands(Input, period);
		}

		public Indicators.HeadleyBands HeadleyBands(ISeries<double> input , int period)
		{
			return indicator.HeadleyBands(input, period);
		}
	}
}

#endregion