/// <summary>
/// Action to be executd for calculating indicator
/// </summary>
/// <returns>for future usage. Must be ignored at this time.</returns>
protected override bool TrueAction()
{
// Validate
int size = _chartPanel._chartX.RecordCount;
if (size == 0)
{
return(false);
}
if (ParamInt(1) < 1 || ParamInt(1) > size / 2)
{
ProcessError("Invalid Periods for indicator " + FullName, IndicatorErrorType.ShowErrorMessage);
return(false);
}
if (ParamInt(2) < 0 || ParamInt(2) > 10)
{
ProcessError("Invalid Standard Deviations for indicator " + FullName, IndicatorErrorType.ShowErrorMessage);
return(false);
}
if (ParamInt(3) < (int)Constants.MA_START || ParamInt(3) > (int)Constants.MA_END)
{
ProcessError("Invalid Moving Average Type for indicator " + FullName, IndicatorErrorType.ShowErrorMessage);
return(false);
}
Field pSource = SeriesToField("Source", ParamStr(0), size);
if (!EnsureField(pSource, ParamStr(0)))
{
return(false);
}
Navigator pNav = new Navigator();
Recordset pRS = new Recordset();
pRS.AddField(pSource);
pNav.Recordset_ = pRS;
// Calculate the indicator
Bands ta = new Bands();
Recordset pInd = ta.BollingerBands(pNav, pSource, ParamInt(1), ParamInt(2), (IndicatorType)ParamInt(3));
// Output the indicator values
Clear();
Series series = _chartPanel._chartX.GetSeriesByName(ParamStr(0));
TwinIndicator pTop = (TwinIndicator)EnsureSeries(FullName + " Top");
pTop.SetStrokeColor(StrokeColor, false);
pTop.SetStrokeThickness(StrokeThickness, false);
pTop.SetStrokePattern(_strokePattern, false);
TwinIndicator pBottom = (TwinIndicator)EnsureSeries(FullName + " Bottom");
pBottom.SetStrokeColor(StrokeColor, false);
pBottom.SetStrokeThickness(StrokeThickness, false);
pBottom.SetStrokePattern(_strokePattern, false);
int paramInt1 = ParamInt(1);
for (int n = 0; n < size; ++n)
{
double?top;
double?median;
double?bottom;
if (n < paramInt1)
{
top = null;
median = null;
bottom = null;
}
else
{
top = pInd.Value("Bollinger Band Top", n + 1);
median = pInd.Value("Bollinger Band Median", n + 1);
bottom = pInd.Value("Bollinger Band Bottom", n + 1);
}
AppendValue(series[n].TimeStamp, median);
pTop.AppendValue(series[n].TimeStamp, top);
pBottom.AppendValue(series[n].TimeStamp, bottom);
}
return(_calculateResult = PostCalculate());
}