From: Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
Date: Sun, 31 Oct 2021 11:20:31 +0000 (+0100)
Subject: cut, copy, paste
X-Git-Tag: v0.9.8-beta~2
X-Git-Url: https://git.osiis.dedyn.io/?a=commitdiff_plain;h=6f2069f51fd45b0bd15a1e6531e8089af921c29c;p=jp%2Fcrow.git

cut, copy, paste
---

diff --git a/Crow/Default.style b/Crow/Default.style
index 54c44b42..066eb21b 100644
--- a/Crow/Default.style
+++ b/Crow/Default.style
@@ -81,6 +81,7 @@ Button {
 	MinimumSize = "60,22";
 	Height 		= "Fit";
 	Width 		= "Fit";
+	BubbleEvents= "None";
 }
 ButtonBorder {
 	BorderWidth="1";
diff --git a/Crow/Templates/MenuButton.template b/Crow/Templates/MenuButton.template
index 8025954b..8bde1c59 100644
--- a/Crow/Templates/MenuButton.template
+++ b/Crow/Templates/MenuButton.template
@@ -5,4 +5,4 @@
 						MouseEnter="{Background=${ControlHighlight}}"
 						MouseLeave="{Background=Transparent}"/>
 	</Template>
-</Button>
+</Button>
\ No newline at end of file
diff --git a/Crow/Templates/MenuItem.template b/Crow/Templates/MenuItem.template
index 4075be94..a86c3538 100644
--- a/Crow/Templates/MenuItem.template
+++ b/Crow/Templates/MenuItem.template
@@ -4,17 +4,15 @@
 		Foreground = "{./Foreground}" BubbleEvents="All"
 		IsPopped="{²./IsOpened}" PopWidth="{./PopWidth}" PopHeight="{./PopHeight}">
 		<Template>
-			
-					<Border Name="border1"
-							MinimumSize = "60,0"
-							Foreground="Transparent"
-							Background="{./Background}">
-							<Label Text="{./Caption}"
-								Foreground="{./Foreground}"
-								Margin="2" HorizontalAlignment="Left"
-								Font="{./Font}"	/>
-					</Border>
-			
+			<Border Name="border1"
+					MinimumSize = "60,0"
+					Foreground="Transparent"
+					Background="{./Background}">
+					<Label Text="{./Caption}"
+						Foreground="{./Foreground}"
+						Margin="2" HorizontalAlignment="Left"
+						Font="{./Font}"	/>
+			</Border>
 		</Template>
 		<Border Foreground="DimGrey" Width="{../PopWidth}" Height="{../PopHeight}" Background="${MenuBackground}">
 			<VerticalStack Name="ItemsContainer" Width="Stretched" />
diff --git a/Crow/src/EventArgs/SelectionChangeEventArgs.cs b/Crow/src/EventArgs/SelectionChangeEventArgs.cs
index c45c880a..186de3fa 100644
--- a/Crow/src/EventArgs/SelectionChangeEventArgs.cs
+++ b/Crow/src/EventArgs/SelectionChangeEventArgs.cs
@@ -6,8 +6,11 @@ using System;
 
 namespace Crow
 {
+	/// <summary>
+	/// Occurs when the selection has changed.
+	/// </summary>
 	public class SelectionChangeEventArgs: EventArgs
-	{		
+	{
 		public object NewValue;
 
 		public SelectionChangeEventArgs (object _newValue) : base()
diff --git a/Crow/src/EventArgs/TextSelectionChangeEventArgs.cs b/Crow/src/EventArgs/TextSelectionChangeEventArgs.cs
new file mode 100644
index 00000000..979c7109
--- /dev/null
+++ b/Crow/src/EventArgs/TextSelectionChangeEventArgs.cs
@@ -0,0 +1,26 @@
+// Copyright (c) 2013-2021  Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
+//
+// This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
+
+using Crow.Text;
+using System;
+
+namespace Crow
+{
+	/// <summary>
+	/// Occurs in the TextBox widget and Label when the current selected text has changed.
+	/// </summary>
+	public class TextSelectionChangeEventArgs: EventArgs
+	{
+		/// <summary>
+		/// The text span of the current selection.
+		/// </summary>
+		public TextSpan Selection;
+
+		public TextSelectionChangeEventArgs (TextSpan newSelection) : base()
+		{
+			Selection = newSelection;
+		}
+	}
+}
+
diff --git a/Crow/src/Widgets/Button.cs b/Crow/src/Widgets/Button.cs
index cdd9c590..607e0337 100644
--- a/Crow/src/Widgets/Button.cs
+++ b/Crow/src/Widgets/Button.cs
@@ -106,7 +106,7 @@ namespace Crow
 		public override void onMouseClick (object sender, MouseButtonEventArgs e)
 		{
 			command?.Execute (this);
-			e.Handled = true;
+			//e.Handled = true;
 			base.onMouseClick (sender, e);
 		}
 
diff --git a/Crow/src/Widgets/Label.cs b/Crow/src/Widgets/Label.cs
index 7bd16b92..15a38357 100644
--- a/Crow/src/Widgets/Label.cs
+++ b/Crow/src/Widgets/Label.cs
@@ -26,11 +26,19 @@ namespace Crow
 		/// Occurs when Text has changed.
 		/// </summary>
 		public event EventHandler<TextChangeEventArgs> TextChanged;
+		/// <summary>
+		/// Occurs when the current selected text has changed
+		/// </summary>
+		public event EventHandler<TextSelectionChangeEventArgs> SelectionChanged;
 
 		public virtual void OnTextChanged(Object sender, TextChangeEventArgs e)
 		{
 			TextChanged.Raise (this, e);
 		}
+		public virtual void OnSelectionChanged(Object sender, TextSelectionChangeEventArgs e)
+		{
+			SelectionChanged.Raise (this, e);
+		}
         //TODO:change protected to private
 
 		#region private and protected fields
@@ -54,6 +62,8 @@ namespace Crow
 				currentLoc = value;
 				NotifyValueChanged ("CurrentLine", CurrentLine);
 				NotifyValueChanged ("CurrentColumn", CurrentColumn);
+				if (SelectionChanged != null)
+					OnSelectionChanged (this, new TextSelectionChangeEventArgs (Selection));
             }
         }
 		public virtual int CurrentLine {
@@ -137,7 +147,7 @@ namespace Crow
 				_textAlignment = value;
 
 				CurrentLoc?.ResetVisualX ();
-				selectionStart?.ResetVisualX ();
+				SelectionStart?.ResetVisualX ();
 
 				RegisterForRedraw ();
 				NotifyValueChangedAuto (_textAlignment);
@@ -170,10 +180,10 @@ namespace Crow
         }
 
 		void constraintsLocations () {
-			if (selectionStart.HasValue) {
+			if (SelectionStart.HasValue) {
 				CharLocation loc = CurrentLoc.Value;
 				int l = Math.Min (loc.Line, lines.Count - 1);
-				selectionStart = new CharLocation (l, Math.Min (loc.Column, lines[l].Length - 1));
+				SelectionStart = new CharLocation (l, Math.Min (loc.Column, lines[l].Length - 1));
 			}
 			if (CurrentLoc.HasValue) {
 				CharLocation loc = CurrentLoc.Value;
@@ -308,27 +318,27 @@ namespace Crow
 		public TextSpan Selection {
 			set {
 				if (value.IsEmpty)
-					selectionStart = null;
+					SelectionStart = null;
 				else
-					selectionStart = lines.GetLocation (value.Start);
+					SelectionStart = lines.GetLocation (value.Start);
 				CurrentLoc = lines.GetLocation (value.End);
 			}
 			get {
 				if (CurrentLoc == null)
 					return default;
 				CharLocation selStart = CurrentLoc.Value, selEnd = CurrentLoc.Value;
-				if (selectionStart.HasValue) {
-					if (CurrentLoc.Value.Line < selectionStart.Value.Line) {
+				if (SelectionStart.HasValue) {
+					if (CurrentLoc.Value.Line < SelectionStart.Value.Line) {
 						selStart = CurrentLoc.Value;
-						selEnd = selectionStart.Value;
-					} else if (CurrentLoc.Value.Line > selectionStart.Value.Line) {
-						selStart = selectionStart.Value;
+						selEnd = SelectionStart.Value;
+					} else if (CurrentLoc.Value.Line > SelectionStart.Value.Line) {
+						selStart = SelectionStart.Value;
 						selEnd = CurrentLoc.Value;
-					} else if (CurrentLoc.Value.Column < selectionStart.Value.Column) {
+					} else if (CurrentLoc.Value.Column < SelectionStart.Value.Column) {
 						selStart = CurrentLoc.Value;
-						selEnd = selectionStart.Value;
+						selEnd = SelectionStart.Value;
 					} else {
-						selStart = selectionStart.Value;
+						selStart = SelectionStart.Value;
 						selEnd = CurrentLoc.Value;
 					}
 				}
@@ -341,7 +351,17 @@ namespace Crow
 				return selection.IsEmpty ? "" : Text.AsSpan (selection.Start, selection.Length).ToString ();
 			}
         }
-		public bool SelectionIsEmpty => selectionStart.HasValue ? Selection.IsEmpty : true;
+		public bool SelectionIsEmpty => SelectionStart.HasValue ? Selection.IsEmpty : true;
+		public CharLocation? SelectionStart {
+			get => selectionStart;
+			set {
+				if (selectionStart == value)
+					return;
+				selectionStart = value;
+				if (SelectionChanged != null)
+					OnSelectionChanged (this, new TextSelectionChangeEventArgs (Selection));
+			}
+		}
 
 		protected virtual void measureTextBounds (Context gr) {
 			fe = gr.FontExtents;
@@ -380,23 +400,23 @@ namespace Crow
 					NotifyValueChanged ("CurrentColumn", CurrentColumn);
 				} else
 					updateLocation (gr, cb.Width, ref currentLoc);
-				if (selectionStart.HasValue) {
+				if (SelectionStart.HasValue) {
 					updateLocation (gr, cb.Width, ref selectionStart);
-					if (CurrentLoc.Value != selectionStart.Value)
+					if (CurrentLoc.Value != SelectionStart.Value)
 						selectionNotEmpty = true;
 				}
 				if (selectionNotEmpty) {
-					if (CurrentLoc.Value.Line < selectionStart.Value.Line) {
+					if (CurrentLoc.Value.Line < SelectionStart.Value.Line) {
 						selStart = CurrentLoc.Value;
-						selEnd = selectionStart.Value;
-					} else if (CurrentLoc.Value.Line > selectionStart.Value.Line) {
-						selStart = selectionStart.Value;
+						selEnd = SelectionStart.Value;
+					} else if (CurrentLoc.Value.Line > SelectionStart.Value.Line) {
+						selStart = SelectionStart.Value;
 						selEnd = CurrentLoc.Value;
-					} else if (CurrentLoc.Value.Column < selectionStart.Value.Column) {
+					} else if (CurrentLoc.Value.Column < SelectionStart.Value.Column) {
 						selStart = CurrentLoc.Value;
-						selEnd = selectionStart.Value;
+						selEnd = SelectionStart.Value;
 					} else {
-						selStart = selectionStart.Value;
+						selStart = SelectionStart.Value;
 						selEnd = CurrentLoc.Value;
 					}
 				} else
@@ -600,10 +620,10 @@ namespace Crow
 		}
 		protected void checkShift (Modifier modifier) {
 			if (modifier.HasFlag (Modifier.Shift)) {
-				if (!selectionStart.HasValue)
-					selectionStart = CurrentLoc;
+				if (!SelectionStart.HasValue)
+					SelectionStart = CurrentLoc;
 			} else
-				selectionStart = null;
+				SelectionStart = null;
 		}
 
 		#region Widget overrides
@@ -670,7 +690,7 @@ namespace Crow
 		{
 			base.onFocused (sender, e);
 			if (CurrentLoc == null) {
-				selectionStart = new CharLocation (0, 0);
+				SelectionStart = new CharLocation (0, 0);
 				CurrentLoc = new CharLocation (lines.Count - 1, lines[lines.Count - 1].Length);
 			}
 			RegisterForRedraw ();
@@ -702,9 +722,9 @@ namespace Crow
 				targetColumn = -1;
 				if (HasFocus) {
 					if (!IFace.Shift)
-						selectionStart = hoverLoc;
-					else if (!selectionStart.HasValue)
-						selectionStart = CurrentLoc;
+						SelectionStart = hoverLoc;
+					else if (!SelectionStart.HasValue)
+						SelectionStart = CurrentLoc;
 					CurrentLoc = hoverLoc;
 					IFace.forceTextCursor = true;
 					RegisterForRedraw ();
@@ -718,10 +738,10 @@ namespace Crow
 		public override void onMouseUp (object sender, MouseButtonEventArgs e)
 		{
 			base.onMouseUp (sender, e);
-			if (e.Button != MouseButton.Left || !HasFocus || !selectionStart.HasValue)
+			if (e.Button != MouseButton.Left || !HasFocus || !SelectionStart.HasValue)
 				return;
-			if (selectionStart.Value == CurrentLoc.Value)
-				selectionStart = null;
+			if (SelectionStart.Value == CurrentLoc.Value)
+				SelectionStart = null;
 		}
 		public override void onMouseDoubleClick (object sender, MouseButtonEventArgs e)
 		{
@@ -730,7 +750,7 @@ namespace Crow
 				return;
 
 			GotoWordStart ();
-			selectionStart = CurrentLoc;
+			SelectionStart = CurrentLoc;
 			GotoWordEnd ();
 			RegisterForRedraw ();
 		}
@@ -741,7 +761,7 @@ namespace Crow
 
 			switch (e.Key) {
 			case Key.Escape:
-				selectionStart = null;
+				SelectionStart = null;
 				RegisterForRedraw ();
 				break;
 			case Key.Home:
diff --git a/Crow/src/Widgets/MenuItem.cs b/Crow/src/Widgets/MenuItem.cs
index 91c4677c..4fc6d86a 100644
--- a/Crow/src/Widgets/MenuItem.cs
+++ b/Crow/src/Widgets/MenuItem.cs
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2020  Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
+// Copyright (c) 2013-2021  Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
 //
 // This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
 
@@ -25,7 +25,7 @@ namespace Crow
 		#region Public properties
 		[DefaultValue(false)]
 		public bool IsOpened {
-			get { return isOpened; }
+			get => isOpened;
 			set {
 				if (isOpened == value)
 					return;
@@ -149,7 +149,7 @@ namespace Crow
 		{
 			if (command != null) {
 				command.Execute (this);
-				closeMenu ();
+				CloseMenu ();
 			}
 			if (hasClick)
 				base.onMouseClick (sender, e);
@@ -159,8 +159,8 @@ namespace Crow
 					m.AutomaticOpening = false;
 
 		}
-		void closeMenu () {
-			MenuItem tmp = LogicalParent as MenuItem;
+		public void CloseMenu () {
+			MenuItem tmp = this;
 			while (tmp != null) {
 				tmp.IsOpened = false;
 				tmp.Background = Colors.Transparent;
diff --git a/Crow/src/Widgets/TextBox.cs b/Crow/src/Widgets/TextBox.cs
index 900075ff..e3fac1b4 100644
--- a/Crow/src/Widgets/TextBox.cs
+++ b/Crow/src/Widgets/TextBox.cs
@@ -298,7 +298,7 @@ namespace Crow
 					OnValidate (this, new ValidateEventArgs (_text));
 				break;
 			case Key.Escape:
-				selectionStart = null;
+				SelectionStart = null;
 				CurrentLoc = lines.GetLocation (selection.Start);
 				RegisterForRedraw ();
 				break;
@@ -349,7 +349,7 @@ namespace Crow
 				_text = tmp.ToString ();
 				lines.Update (change);
 				//lines.Update (_text);
-				selectionStart = null;
+				SelectionStart = null;
 
 				CurrentLoc = lines.GetLocation (change.Start + change.ChangedText.Length);
 				textMeasureIsUpToDate = false;
diff --git a/Samples/ShowCase/ShowCase.cs b/Samples/ShowCase/ShowCase.cs
index 06fca837..6774314a 100644
--- a/Samples/ShowCase/ShowCase.cs
+++ b/Samples/ShowCase/ShowCase.cs
@@ -111,7 +111,7 @@ namespace ShowCase
 		}
 
 		void showError (Exception ex) {
-			Console.WriteLine (ex);
+			Debug.WriteLine (ex);
 			NotifyValueChanged ("ErrorMessage", ex);
 			NotifyValueChanged ("ShowError", true);
 		}
@@ -127,7 +127,7 @@ namespace ShowCase
 
 			Load ("#ShowCase.showcase.crow").DataSource = this;
 			crowContainer = FindByName ("CrowContainer") as Container;
-			editor = FindByName ("tb") as TextBox;
+			editor = FindByName ("tb") as Editor;
 
 			if (!File.Exists (CurrentFile))
 				newFile ();
diff --git a/Samples/ShowCase/ui/showcase.crow b/Samples/ShowCase/ui/showcase.crow
index 19939654..692ce88e 100644
--- a/Samples/ShowCase/ui/showcase.crow
+++ b/Samples/ShowCase/ui/showcase.crow
@@ -83,9 +83,9 @@
 				<Button Style="IcoButton" Command="{CMDSaveAs}" />
 				<Button Style="IcoButton" Command="{CMDUndo}" />
 				<Button Style="IcoButton" Command="{CMDRedo}" />
-				<!--<Button Style="IcoButton" Command="{CMDCut}" />
+				<Button Style="IcoButton" Command="{CMDCut}" />
 				<Button Style="IcoButton" Command="{CMDCopy}" />
-				<Button Style="IcoButton" Command="{CMDPaste}" />-->
+				<Button Style="IcoButton" Command="{CMDPaste}" />
 				<Popper RootDataLevel="true" IsVisible="{DebugLoggingEnabled}" Fit="true">
 					<Template>
 						<CheckBox IsChecked="{²./IsPopped}">
@@ -146,7 +146,7 @@
 						</Border>
 					</Template>
 					<VerticalStack Width="200" Height="200" Background="Jet" Margin="5">
-						<CheckBox Caption="Embed source in templated control" IsChecked="{²EncloseInTemplatedControl}"/>
+						<CheckBox Caption="Embed source in template" IsChecked="{²EncloseInTemplatedControl}"/>
 						<TextBox BubbleEvents="None" Text="{²TemplateContainerSource}" Width="Stretched" Height="Stretched" Multiline="true"
 							Tooltip="Add '*source* where you want to load the source in the editor."/>
 					</VerticalStack>
@@ -155,8 +155,8 @@
 			<HorizontalStack>
 				<Editor Name="tb" Text="{Source}" Multiline="true" Font="consolas, 12" Focusable="true" Height="Stretched" Width="Stretched"
 						TextChanged="onTextChanged" KeyDown="textView_KeyDown" ContextCommands="{EditorCommands}"
+						SelectionChanged="onEditorSelectionChanged"
 						Foreground="DarkGrey" Background="White" MouseWheelSpeed="20"/>
-						<!--SelectionChanged="onSelectedTextChanged"-->
 				<ScrollBar Value="{²../tb.ScrollY}"
 						LargeIncrement="{../tb.PageHeight}" SmallIncrement="1"
 						CursorRatio="{../tb.ChildHeightRatio}" Maximum="{../tb.MaxScrollY}" />
diff --git a/Samples/common/src/Editor.cs b/Samples/common/src/Editor.cs
index 25a15c5a..90335d83 100644
--- a/Samples/common/src/Editor.cs
+++ b/Samples/common/src/Editor.cs
@@ -210,7 +210,7 @@ namespace Crow
 					if (attrib.ValueToken.HasValue) {
 						TextChange tc = new TextChange (currentToken.Start, currentToken.Length, selectedSugg);
 						update (tc);
-						selectionStart = lines.GetLocation (attrib.ValueToken.Value.Start + tc.CharDiff + 1);
+						SelectionStart = lines.GetLocation (attrib.ValueToken.Value.Start + tc.CharDiff + 1);
 						CurrentLoc = lines.GetLocation (attrib.ValueToken.Value.End + tc.CharDiff - 1);
 					} else {
 						update (new TextChange (currentToken.Start, currentToken.Length, selectedSugg + "=\"\""));
@@ -224,7 +224,10 @@ namespace Crow
 			hideOverlay ();
 			base.onMouseDown (sender, e);
 		}
-
+		public override void onMouseEnter(object sender, MouseMoveEventArgs e) {
+			base.onMouseEnter (sender, e);
+			HasFocus = true;
+		}
 		public override void onKeyDown(object sender, KeyEventArgs e)
 		{
 			TextSpan selection = Selection;
@@ -280,7 +283,7 @@ namespace Crow
 						update (new TextChange (lines[l].Start, 0, "\t"));
 				}
 
-				selectionStart = new CharLocation (lineStart, 0);
+				SelectionStart = new CharLocation (lineStart, 0);
 				CurrentLoc = new CharLocation (lineEnd, lines[lineEnd].Length);
 
 				disableSuggestions = false;
@@ -305,7 +308,7 @@ namespace Crow
 					CharLocation selStart = default, selEnd = default;
 					bool selectionNotEmpty = false;
 
-					if (HasFocus) {
+					//if (HasFocus) {
 						if (currentLoc?.Column < 0) {
 							updateLocation (gr, cb.Width, ref currentLoc);
 							NotifyValueChanged ("CurrentColumn", CurrentColumn);
@@ -322,28 +325,28 @@ namespace Crow
 								overlay.Top = p.Y;
 							}
 						}
-						if (selectionStart.HasValue) {
+						if (SelectionStart.HasValue) {
 							updateLocation (gr, cb.Width, ref selectionStart);
-							if (CurrentLoc.Value != selectionStart.Value)
+							if (CurrentLoc.Value != SelectionStart.Value)
 								selectionNotEmpty = true;
 						}
 						if (selectionNotEmpty) {
-							if (CurrentLoc.Value.Line < selectionStart.Value.Line) {
+							if (CurrentLoc.Value.Line < SelectionStart.Value.Line) {
 								selStart = CurrentLoc.Value;
-								selEnd = selectionStart.Value;
-							} else if (CurrentLoc.Value.Line > selectionStart.Value.Line) {
-								selStart = selectionStart.Value;
+								selEnd = SelectionStart.Value;
+							} else if (CurrentLoc.Value.Line > SelectionStart.Value.Line) {
+								selStart = SelectionStart.Value;
 								selEnd = CurrentLoc.Value;
-							} else if (CurrentLoc.Value.Column < selectionStart.Value.Column) {
+							} else if (CurrentLoc.Value.Column < SelectionStart.Value.Column) {
 								selStart = CurrentLoc.Value;
-								selEnd = selectionStart.Value;
+								selEnd = SelectionStart.Value;
 							} else {
-								selStart = selectionStart.Value;
+								selStart = SelectionStart.Value;
 								selEnd = CurrentLoc.Value;
 							}
 						} else
 							IFace.forceTextCursor = true;
-					}
+					//}
 
 					double spacePixelWidth = gr.TextExtents (" ").XAdvance;
 					int x = 0, y = 0;
@@ -429,7 +432,7 @@ namespace Crow
 							tok = source.Tokens[tokPtr];
 						}
 
-						if (HasFocus && selectionNotEmpty) {
+						if (selectionNotEmpty) {
 							RectangleD lineRect = new RectangleD (cb.X,	lineHeight * y + cb.Top, pixX, lineHeight);
 							RectangleD selRect = lineRect;
 
diff --git a/Samples/common/src/SampleBaseForEditor.cs b/Samples/common/src/SampleBaseForEditor.cs
index 92d0634c..b207eea3 100644
--- a/Samples/common/src/SampleBaseForEditor.cs
+++ b/Samples/common/src/SampleBaseForEditor.cs
@@ -27,12 +27,11 @@ namespace Samples
 
 			if (string.IsNullOrEmpty (CurrentDir))
 				CurrentDir = Path.Combine (Directory.GetCurrentDirectory (), "Interfaces");
-
 		}
 
 		protected const string _defaultFileName = "unnamed.txt";
 		protected string source = "", origSource;
-		protected TextBox editor;
+		protected Editor editor;
 		bool debugLogRecording;
 
 
@@ -148,7 +147,10 @@ namespace Samples
 		protected TextSpan selection;
 		protected string SelectedText =>
 				selection.IsEmpty ? "" : Source.AsSpan (selection.Start, selection.Length).ToString ();
-
+		public void onEditorSelectionChanged(Object sender, TextSelectionChangeEventArgs e) {
+			selection = e.Selection;
+			CMDCut.CanExecute = CMDCopy.CanExecute = !selection.IsEmpty;
+		}
 		protected void undo () {
 			if (undoStack.TryPop (out TextChange tch)) {
 				redoStack.Push (tch.Inverse (source));
@@ -182,6 +184,7 @@ namespace Samples
 		}
 		protected void copy () {
 			Clipboard = SelectedText;
+			CMDPaste.CanExecute = !string.IsNullOrEmpty (Clipboard);
 		}
 		protected void paste () {
 			applyChange (new TextChange (selection.Start, selection.Length, Clipboard));
@@ -276,6 +279,10 @@ namespace Samples
 			disableTextChangedEvent = true;
 			Source = tmp.ToString ();
 			disableTextChangedEvent = false;
+			editor.SelectionStart = null;
+			editor.SetCursorPosition (change.Start + change.ChangedText.Length);
+
+			forceTextCursor = true;
 		}
 		protected void applyChange (TextChange change) {
 			undoStack.Push (change.Inverse (source));
@@ -316,12 +323,6 @@ namespace Samples
 				return;
 			applyChange (e.Change);
 		}
-
-		protected void onSelectedTextChanged (object sender, EventArgs e) {
-			selection = (sender as Label).Selection;
-			Console.WriteLine($"selection:{selection.Start} length:{selection.Length}");
-			CMDCut.CanExecute = CMDCopy.CanExecute = !selection.IsEmpty;
-		}
 		protected void textView_KeyDown (object sender, Crow.KeyEventArgs e) {
 			if (Ctrl) {
 				if (e.Key == Glfw.Key.W) {
diff --git a/Samples/common/ui/Interfaces/TemplatedGroup/menu3.crow b/Samples/common/ui/Interfaces/TemplatedGroup/menu3.crow
index d58c9653..ba7a8e0c 100644
--- a/Samples/common/ui/Interfaces/TemplatedGroup/menu3.crow
+++ b/Samples/common/ui/Interfaces/TemplatedGroup/menu3.crow
@@ -13,7 +13,7 @@
 					</Template>
 					<VerticalStack Margin="0" Name="ItemsContainer" Fit="true" Background="Jet"/>
 				</Popper>
-			</Template>		
+			</Template>
 			<ItemTemplate DataType="Crow.Command" Path="#Crow.MenuButton.template"/>
 			<ItemTemplate DataType="Crow.CommandGroup" Data="Commands">
 				<Popper PopDirection="Right" Caption="{Caption}" IsEnabled="{CanExecute}" Width="Stretched"
@@ -25,10 +25,10 @@
 							<Label Text="{./Caption}"   Width="Fit" Height="Stretched"/>
 							<Label Text="..."/>
 						</HorizontalStack>
-					</Template>		
+					</Template>
 					<VerticalStack Margin="0" Name="ItemsContainer" Width="{../PopWidth}" Height="{../PopHeight}" Background="${MenuBackground}"/>
 				</Popper>
-			</ItemTemplate>						
+			</ItemTemplate>
 		</MenuItem>
 	</ItemTemplate>
 </Menu>
\ No newline at end of file