Initial Commit

Common/UndoSystem/DependencyPropertyChangedUndoAction.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows;
+
+namespace Microsoft.Research.DynamicDataDisplay.Common.UndoSystem
+{
+	public class DependencyPropertyChangedUndoAction : UndoAction
+	{
+		private readonly DependencyProperty property;
+		private readonly DependencyObject target;
+		private readonly object oldValue;
+		private readonly object newValue;
+
+		public DependencyPropertyChangedUndoAction(DependencyObject target, DependencyProperty property, object oldValue, object newValue)
+		{
+			this.target = target;
+			this.property = property;
+			this.oldValue = oldValue;
+			this.newValue = newValue;
+		}
+
+		public DependencyPropertyChangedUndoAction(DependencyObject target, DependencyPropertyChangedEventArgs e)
+		{
+			this.target = target;
+			this.property = e.Property;
+			this.oldValue = e.OldValue;
+			this.newValue = e.NewValue;
+		}
+
+		public override void Do()
+		{
+			target.SetValue(property, newValue);
+		}
+
+		public override void Undo()
+		{
+			target.SetValue(property, oldValue);
+		}
+	}
+}