1 files changed, 89 insertions, 0 deletions
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Editing/SelectionSegment.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Editing/SelectionSegment.cs
new file mode 100644
index 000000000..46c560b34
--- /dev/null
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Editing/SelectionSegment.cs
@@ -0,0 +1,89 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using Tango.Scripting.Editors.Document;
+
+namespace Tango.Scripting.Editors.Editing
+{
+	/// <summary>
+	/// Represents a selected segment.
+	/// </summary>
+	public class SelectionSegment : ISegment
+	{
+		readonly int startOffset, endOffset;
+		readonly int startVC, endVC;
+		
+		/// <summary>
+		/// Creates a SelectionSegment from two offsets.
+		/// </summary>
+		public SelectionSegment(int startOffset, int endOffset)
+		{
+			this.startOffset = Math.Min(startOffset, endOffset);
+			this.endOffset = Math.Max(startOffset, endOffset);
+			this.startVC = this.endVC = -1;
+		}
+		
+		/// <summary>
+		/// Creates a SelectionSegment from two offsets and visual columns.
+		/// </summary>
+		public SelectionSegment(int startOffset, int startVC, int endOffset, int endVC)
+		{
+			if (startOffset < endOffset || (startOffset == endOffset && startVC <= endVC)) {
+				this.startOffset = startOffset;
+				this.startVC = startVC;
+				this.endOffset = endOffset;
+				this.endVC = endVC;
+			} else {
+				this.startOffset = endOffset;
+				this.startVC = endVC;
+				this.endOffset = startOffset;
+				this.endVC = startVC;
+			}
+		}
+		
+		/// <summary>
+		/// Gets the start offset.
+		/// </summary>
+		public int StartOffset {
+			get { return startOffset; }
+		}
+		
+		/// <summary>
+		/// Gets the end offset.
+		/// </summary>
+		public int EndOffset {
+			get { return endOffset; }
+		}
+		
+		/// <summary>
+		/// Gets the start visual column.
+		/// </summary>
+		public int StartVisualColumn {
+			get { return startVC; }
+		}
+		
+		/// <summary>
+		/// Gets the end visual column.
+		/// </summary>
+		public int EndVisualColumn {
+			get { return endVC; }
+		}
+		
+		/// <inheritdoc/>
+		int ISegment.Offset {
+			get { return startOffset; }
+		}
+		
+		/// <inheritdoc/>
+		public int Length {
+			get { return endOffset - startOffset; }
+		}
+		
+		/// <inheritdoc/>
+		public override string ToString()
+		{
+			return string.Format("[SelectionSegment StartOffset={0}, EndOffset={1}, StartVC={2}, EndVC={3}]", startOffset, endOffset, startVC, endVC);
+		}
+	}
+}