MERGE

1 files changed, 50 insertions, 0 deletions

diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Editing/NoReadOnlySections.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Editing/NoReadOnlySections.cs
new file mode 100644
index 000000000..35cd1dd1b
--- /dev/null
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Editing/NoReadOnlySections.cs
@@ -0,0 +1,50 @@
+// 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 System.Linq;
+using System.Collections.Generic;
+using Tango.Scripting.Editors.Document;
+using Tango.Scripting.Editors.Utils;
+
+namespace Tango.Scripting.Editors.Editing
+{
+	/// <summary>
+	/// <see cref="IReadOnlySectionProvider"/> that has no read-only sections; all text is editable.
+	/// </summary>
+	sealed class NoReadOnlySections : IReadOnlySectionProvider
+	{
+		public static readonly NoReadOnlySections Instance = new NoReadOnlySections();
+		
+		public bool CanInsert(int offset)
+		{
+			return true;
+		}
+		
+		public IEnumerable<ISegment> GetDeletableSegments(ISegment segment)
+		{
+			if (segment == null)
+				throw new ArgumentNullException("segment");
+			// the segment is always deletable
+			return ExtensionMethods.Sequence(segment);
+		}
+	}
+	
+	/// <summary>
+	/// <see cref="IReadOnlySectionProvider"/> that completely disables editing.
+	/// </summary>
+	sealed class ReadOnlyDocument : IReadOnlySectionProvider
+	{
+		public static readonly ReadOnlyDocument Instance = new ReadOnlyDocument();
+		
+		public bool CanInsert(int offset)
+		{
+			return false;
+		}
+		
+		public IEnumerable<ISegment> GetDeletableSegments(ISegment segment)
+		{
+			return Enumerable.Empty<ISegment>();
+		}
+	}
+}