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ICSharpCode.TextEditor/Project/Src/Actions/SelectionActions.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.Drawing;
+using ICSharpCode.TextEditor.Document;
+
+namespace ICSharpCode.TextEditor.Actions
+{
+	public class ShiftCaretRight : CaretRight
+	{
+		public override void Execute(TextArea textArea)
+		{
+			TextLocation oldCaretPos  = textArea.Caret.Position;
+			base.Execute(textArea);
+			textArea.AutoClearSelection = false;
+			textArea.SelectionManager.ExtendSelection(oldCaretPos, textArea.Caret.Position);
+		}
+	}
+	
+	public class ShiftCaretLeft : CaretLeft
+	{
+		public override void Execute(TextArea textArea)
+		{
+			TextLocation oldCaretPos  = textArea.Caret.Position;
+			base.Execute(textArea);
+			textArea.AutoClearSelection = false;
+			textArea.SelectionManager.ExtendSelection(oldCaretPos, textArea.Caret.Position);
+		}
+	}
+	
+	public class ShiftCaretUp : CaretUp
+	{
+		public override void Execute(TextArea textArea)
+		{
+			TextLocation oldCaretPos  = textArea.Caret.Position;
+			base.Execute(textArea);
+			textArea.AutoClearSelection = false;
+			textArea.SelectionManager.ExtendSelection(oldCaretPos, textArea.Caret.Position);
+		}
+	}
+	
+	public class ShiftCaretDown : CaretDown
+	{
+		public override void Execute(TextArea textArea)
+		{
+			TextLocation oldCaretPos  = textArea.Caret.Position;
+			base.Execute(textArea);
+			textArea.AutoClearSelection = false;
+			textArea.SelectionManager.ExtendSelection(oldCaretPos, textArea.Caret.Position);
+		}
+	}
+	
+	public class ShiftWordRight : WordRight
+	{
+		public override void Execute(TextArea textArea)
+		{
+			TextLocation oldCaretPos  = textArea.Caret.Position;
+			base.Execute(textArea);
+			textArea.AutoClearSelection = false;
+			textArea.SelectionManager.ExtendSelection(oldCaretPos, textArea.Caret.Position);
+		}
+	}
+	
+	public class ShiftWordLeft : WordLeft
+	{
+		public override void Execute(TextArea textArea)
+		{
+			TextLocation oldCaretPos  = textArea.Caret.Position;
+			base.Execute(textArea);
+			textArea.AutoClearSelection = false;
+			textArea.SelectionManager.ExtendSelection(oldCaretPos, textArea.Caret.Position);
+		}
+	}
+	
+	public class ShiftHome : Home
+	{
+		public override void Execute(TextArea textArea)
+		{
+			TextLocation oldCaretPos  = textArea.Caret.Position;
+			base.Execute(textArea);
+			textArea.AutoClearSelection = false;
+			textArea.SelectionManager.ExtendSelection(oldCaretPos, textArea.Caret.Position);
+		}
+	}
+	
+	public class ShiftEnd : End
+	{
+		public override void Execute(TextArea textArea)
+		{
+			TextLocation oldCaretPos  = textArea.Caret.Position;
+			base.Execute(textArea);
+			textArea.AutoClearSelection = false;
+			textArea.SelectionManager.ExtendSelection(oldCaretPos, textArea.Caret.Position);
+		}
+	}
+	
+	public class ShiftMoveToStart : MoveToStart
+	{
+		public override void Execute(TextArea textArea)
+		{
+			TextLocation oldCaretPos  = textArea.Caret.Position;
+			base.Execute(textArea);
+			textArea.AutoClearSelection = false;
+			textArea.SelectionManager.ExtendSelection(oldCaretPos, textArea.Caret.Position);
+		}
+	}
+	
+	public class ShiftMoveToEnd : MoveToEnd
+	{
+		public override void Execute(TextArea textArea)
+		{
+			TextLocation oldCaretPos  = textArea.Caret.Position;
+			base.Execute(textArea);
+			textArea.AutoClearSelection = false;
+			textArea.SelectionManager.ExtendSelection(oldCaretPos, textArea.Caret.Position);
+		}
+	}
+	
+	public class ShiftMovePageUp : MovePageUp
+	{
+		public override void Execute(TextArea textArea)
+		{
+			TextLocation oldCaretPos  = textArea.Caret.Position;
+			base.Execute(textArea);
+			textArea.AutoClearSelection = false;
+			textArea.SelectionManager.ExtendSelection(oldCaretPos, textArea.Caret.Position);
+		}
+	}
+	
+	public class ShiftMovePageDown : MovePageDown
+	{
+		public override void Execute(TextArea textArea)
+		{
+			TextLocation oldCaretPos  = textArea.Caret.Position;
+			base.Execute(textArea);
+			textArea.AutoClearSelection = false;
+			textArea.SelectionManager.ExtendSelection(oldCaretPos, textArea.Caret.Position);
+		}
+	}
+	
+	public class SelectWholeDocument : AbstractEditAction
+	{
+		public override void Execute(TextArea textArea)
+		{
+			textArea.AutoClearSelection = false;
+			TextLocation startPoint = new TextLocation(0, 0);
+			TextLocation endPoint   = textArea.Document.OffsetToPosition(textArea.Document.TextLength);
+			if (textArea.SelectionManager.HasSomethingSelected) {
+				if (textArea.SelectionManager.SelectionCollection[0].StartPosition == startPoint &&
+				    textArea.SelectionManager.SelectionCollection[0].EndPosition   == endPoint) {
+					return;
+				}
+			}
+			textArea.Caret.Position = textArea.SelectionManager.NextValidPosition(endPoint.Y);
+			textArea.SelectionManager.ExtendSelection(startPoint, endPoint);
+			// after a SelectWholeDocument selection, the caret is placed correctly,
+			// but it is not positioned internally.  The effect is when the cursor
+			// is moved up or down a line, the caret will take on the column that
+			// it was in before the SelectWholeDocument
+			textArea.SetDesiredColumn();
+		}
+	}
+	
+	public class ClearAllSelections : AbstractEditAction
+	{
+		public override void Execute(TextArea textArea)
+		{
+			textArea.SelectionManager.ClearSelection();
+		}
+	}
+}