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ICSharpCode.TextEditor/Project/Src/Actions/FoldActions.cs

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+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Mike Krüger" email="mike@icsharpcode.net"/>
+//     <version>$Revision$</version>
+// </file>
+
+using System;
+using System.Collections.Generic;
+using ICSharpCode.TextEditor.Document;
+
+namespace ICSharpCode.TextEditor.Actions
+{
+	public class ToggleFolding : AbstractEditAction
+	{
+		public override void Execute(TextArea textArea)
+		{
+			List<FoldMarker> foldMarkers = textArea.Document.FoldingManager.GetFoldingsWithStart(textArea.Caret.Line);
+			if (foldMarkers.Count != 0) {
+				foreach (FoldMarker fm in foldMarkers)
+					fm.IsFolded = !fm.IsFolded;
+			} else {
+				foldMarkers = textArea.Document.FoldingManager.GetFoldingsContainsLineNumber(textArea.Caret.Line);
+				if (foldMarkers.Count != 0) {
+					FoldMarker innerMost = foldMarkers[0];
+					for (int i = 1; i < foldMarkers.Count; i++) {
+						if (new TextLocation(foldMarkers[i].StartColumn, foldMarkers[i].StartLine) >
+						    new TextLocation(innerMost.StartColumn, innerMost.StartLine))
+						{
+							innerMost = foldMarkers[i];
+						}
+					}
+					innerMost.IsFolded = !innerMost.IsFolded;
+				}
+			}
+			textArea.Document.FoldingManager.NotifyFoldingsChanged(EventArgs.Empty);
+		}
+	}
+	
+	public class ToggleAllFoldings : AbstractEditAction
+	{
+		public override void Execute(TextArea textArea)
+		{
+			bool doFold = true;
+			foreach (FoldMarker fm in  textArea.Document.FoldingManager.FoldMarker) {
+				if (fm.IsFolded) {
+					doFold = false;
+					break;
+				}
+			}
+			foreach (FoldMarker fm in  textArea.Document.FoldingManager.FoldMarker) {
+				fm.IsFolded = doFold;
+			}
+			textArea.Document.FoldingManager.NotifyFoldingsChanged(EventArgs.Empty);
+		}
+	}
+	
+	public class ShowDefinitionsOnly : AbstractEditAction
+	{
+		public override void Execute(TextArea textArea)
+		{
+			foreach (FoldMarker fm in  textArea.Document.FoldingManager.FoldMarker) {
+				fm.IsFolded = fm.FoldType == FoldType.MemberBody || fm.FoldType == FoldType.Region;
+			}
+			textArea.Document.FoldingManager.NotifyFoldingsChanged(EventArgs.Empty);
+		}
+	}
+}