Initial Commit

Charts/Markers/TemplateMarkerGenerator2.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows;
+using Microsoft.Research.DynamicDataDisplay.Common;
+using System.Windows.Markup;
+using System.Windows.Controls;
+
+namespace Microsoft.Research.DynamicDataDisplay.Charts.Markers
+{
+	[ContentProperty("Template")]
+	public class TemplateMarkerGenerator2 : OldMarkerGenerator
+	{
+		private DataTemplate template;
+		[NotNull]
+		public DataTemplate Template
+		{
+			get { return template; }
+			set
+			{
+				if (value == null)
+					throw new ArgumentNullException("value");
+
+				if (template != value)
+				{
+					template = value;
+					pool.Clear();
+					RaiseChanged();
+				}
+			}
+		}
+
+		private readonly ResourcePool<FrameworkElement> pool = new ResourcePool<FrameworkElement>();
+
+		protected override FrameworkElement CreateMarkerCore(object dataItem)
+		{
+			if (template == null)
+				throw new InvalidOperationException(Strings.Exceptions.TemplateShouldNotBeNull);
+
+			FrameworkElement marker = pool.Get();
+			if (marker == null)
+			{
+				marker = (FrameworkElement)template.LoadContent();
+			}
+
+			return marker;
+		}
+
+		public override void ReleaseMarker(FrameworkElement element)
+		{
+			pool.Put(element);
+		}
+	}
+}