validation and profiles

lib/oscillators/dem/Dem.Quantower.cs

@@ -0,0 +1,50 @@
+using System.Drawing;
+using System.Runtime.CompilerServices;
+using TradingPlatform.BusinessLayer;
+
+namespace QuanTAlib;
+
+[SkipLocalsInit]
+public sealed class DemIndicator : Indicator, IWatchlistIndicator
+{
+    [InputParameter("Period", sortIndex: 1, 1, 5000, 1, 0)]
+    public int Period { get; set; } = 14;
+
+    [InputParameter("Show cold values", sortIndex: 21)]
+    public bool ShowColdValues { get; set; } = true;
+
+    private Dem _dem = null!;
+    private readonly LineSeries _demLine;
+
+    public static int MinHistoryDepths => 0;
+    int IWatchlistIndicator.MinHistoryDepths => MinHistoryDepths;
+
+    public override string ShortName => $"DEM ({Period})";
+    public override string SourceCodeLink => "https://github.com/mihakralj/QuanTAlib/blob/main/lib/oscillators/dem/Dem.Quantower.cs";
+
+    public DemIndicator()
+    {
+        OnBackGround = true;
+        SeparateWindow = true;
+        Name = "DEM - DeMarker Oscillator";
+        Description = "Bounded [0,1] oscillator comparing sequential highs and lows. Values near 0.3 indicate oversold; near 0.7 indicate overbought.";
+
+        _demLine = new LineSeries("DEM", Color.Yellow, 2, LineStyle.Solid);
+        AddLineSeries(_demLine);
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    protected override void OnInit()
+    {
+        _dem = new Dem(Period);
+        base.OnInit();
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    protected override void OnUpdate(UpdateArgs args)
+    {
+        _ = _dem.Update(this.GetInputBar(args), args.IsNewBar());
+
+        _demLine.SetValue(_dem.Last.Value, _dem.IsHot, ShowColdValues);
+    }
+}