namespace NinjaTrader.Indicator
{
 [Description("EMA colored green when rising and red when falling.")]
 public class jhlEMAColored : Indicator
 {
    #region Variables
    // Wizard generated variables
    private int period = 14; // Default setting for Period
    // User defined variables (add any user defined variables below)
    private JHL.Utility.EMA ema;
    private double prior;
    private int priorBar = -1;
    #endregion


    protected override void Initialize()
    {
       ema = new JHL.Utility.EMA(Period);
       Add(new Plot(Color.FromKnownColor(KnownColor.Green), PlotStyle.Hash, "Rising"));
       Add(new Plot(Color.FromKnownColor(KnownColor.Red), PlotStyle.Hash, "Falling"));
       Overlay = true;
    }

    protected override void OnBarUpdate()
    {
       if ( CurrentBar == 0 ) {
          prior = Input[0];
          return;
       }
 
       double a = ema.set(Input[0], CurrentBar);
       if ( a > prior ) {
          Rising.Set(a);
          if ( Plots[0].PlotStyle == PlotStyle.Line && !Rising.ContainsValue(1) ) 
             Rising.Set(1, Falling[1]);
       }
       else if ( a < prior ) {
          Falling.Set(a);
          if ( Plots[1].PlotStyle == PlotStyle.Line && !Falling.ContainsValue(1) )
             Falling.Set(1, Rising[1]);
       }
       else { // Equality, set both and let NT deal with it?
          Rising.Set(a);
          Falling.Set(a);
       }
 
       if ( CurrentBar > priorBar ) {
          prior = a;
          priorBar = CurrentBar;
       }
    }
 
    #region Properties
    [Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
    [XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
    public DataSeries Rising
    {
       get { return Values[0]; }
    }
    [Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
    [XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
    public DataSeries Falling
    {
       get { return Values[1]; }
    }
    [Description("Number of periods in calculations.")]
    [GridCategory("Parameters")]
    publicint Period
    {
       get { return period; }
       set { period = Math.Max(1, value); }
    }
    #endregion
 }
}