1 files changed, 76 insertions, 0 deletions
diff --git a/main/src/addins/CSharpBinding/MonoDevelop.CSharp.Completion/CastCompletionData.cs b/main/src/addins/CSharpBinding/MonoDevelop.CSharp.Completion/CastCompletionData.cs
new file mode 100644
index 0000000000..33e486a9f8
--- /dev/null
+++ b/main/src/addins/CSharpBinding/MonoDevelop.CSharp.Completion/CastCompletionData.cs
@@ -0,0 +1,76 @@
+// 
+// CSharpCompletionTextEditorExtension.cs
+//  
+// Author:
+//       Mike Krüger <mkrueger@xamarin.com>
+// 
+// Copyright (c) 2011 Xamarin <http://xamarin.com>
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+using System;
+using Microsoft.CodeAnalysis;
+using MonoDevelop.Core;
+using MonoDevelop.Ide.CodeCompletion;
+using System.Collections.Generic;
+using System.Linq;
+using MonoDevelop.Ide.TypeSystem;
+using MonoDevelop.Ide.Editor.Extension;
+
+namespace MonoDevelop.CSharp.Completion
+{
+	class CastCompletionData : RoslynCompletionData
+	{
+		readonly CSharpCompletionTextEditorExtension ext;
+		readonly SemanticModel semanticModel;
+		readonly ISymbol member;
+		readonly SyntaxNode nodeToCast;
+		readonly ITypeSymbol targetType;
+
+		public CastCompletionData (ICSharpCode.NRefactory6.CSharp.Completion.ICompletionKeyHandler keyHandler, CSharpCompletionTextEditorExtension ext, SemanticModel semanticModel, ISymbol member, SyntaxNode nodeToCast, ITypeSymbol targetType) : base(keyHandler)
+		{
+			this.targetType = targetType;
+			this.nodeToCast = nodeToCast;
+			this.member = member;
+			this.semanticModel = semanticModel;
+			this.ext = ext;
+			this.DisplayText = member.Name;
+		}
+
+		public override string GetDisplayDescription (bool isSelected)
+		{
+			var description = "<small>(cast to " + targetType.ToMinimalDisplayString (semanticModel, nodeToCast.SpanStart, Ambience.LabelFormat) + ")</small>";
+			if (isSelected)
+				return description;
+			return "<span foreground=\"darkgray\">" + description + "</span>";
+		}
+
+		public override void InsertCompletionText (CompletionListWindow window, ref KeyActions ka, KeyDescriptor descriptor)
+		{
+			var editor = ext.Editor;
+			var offset = window.CodeCompletionContext.TriggerOffset;
+			using (var undo = editor.OpenUndoGroup ()) {
+				editor.ReplaceText (offset, editor.CaretOffset - offset, member.Name);
+				var span = nodeToCast.Span;
+				var type = targetType.ToMinimalDisplayString (semanticModel, nodeToCast.SpanStart, Ambience.LabelFormat);
+				editor.ReplaceText (span.Start, span.Length, "((" + type + ")" + nodeToCast + ")");
+			}
+		}
+	}
+}