save commit, BubbleEvents, iface.search type and ext meth for loadCtx wise searches, IncludedEvents as list, removed discarded events

39 files changed, 527 insertions, 263 deletions

diff --git a/Crow/Default.style b/Crow/Default.style
index c2b17b4b..181ed47b 100644
--- a/Crow/Default.style
+++ b/Crow/Default.style
@@ -100,8 +100,9 @@ Wrapper {
 }
 Button {
 	Template = "#Crow.Button.template";
+	//Focusable	= "true";
 	Caption 	= "Button";
-	MinimumSize = "50,22";
+	MinimumSize = "60,22";
 	Height 		= "Fit";
 	Width 		= "Fit";
 }
@@ -163,6 +164,7 @@ ListItem {
 	//Selected = "{Background=${ControlHighlight}}";
 	//Unselected = "{Background=Transparent}";
 	//Margin="1";
+	Focusable = "true";
 }
 MessageBox {
 	Background = "0.1,0.1,0.2,0.85";
@@ -362,13 +364,13 @@ TableHeaderLabel {
 
 Button, CheckBox, RadioButton, ComboBox, Expandable,
 MessageBox, Popper, Slider, Spinner, TextBox, NumericControl {
-	//Focusable = "true";
+	Focusable = "true";
 	Foreground="${ControlForeground}";
 	Height = "Fit";
 	Background = "${ControlBackground}";
 	CornerRadius = "${ControlCornerRadius}";
 	Margin="0";
-	BubbleMouseEvent="MouseWheel|Keyboard";
+	BubbleEvents="MouseWheel|Keyboard";
 }
 TemplatedControl, GenericStack {
 	CacheEnabled="true";
diff --git a/Crow/Templates/Button.template b/Crow/Templates/Button.template
index 9ad621d9..6627021e 100644
--- a/Crow/Templates/Button.template
+++ b/Crow/Templates/Button.template
@@ -1,4 +1,4 @@
 <?xml version="1.0"?>
-<Border Style="ButtonBorder" Background="{./Background}" Name="Content" CornerRadius="{../CornerRadius}" >
+<Border Style="ButtonBorder" Background="{./Background}" Name="Content" CornerRadius="{../CornerRadius}" Width="Stretched" Height="Stretched" >
 	<Label Font="{./Font}" Name="caption" Margin="${ButtonCaptionMargin}" Foreground="{./Foreground}" Text="{./Caption}"/>
 </Border>
diff --git a/Crow/Templates/CheckBox2.template b/Crow/Templates/CheckBox2.template
index 0fa0ffef..68afd0bf 100644
--- a/Crow/Templates/CheckBox2.template
+++ b/Crow/Templates/CheckBox2.template
@@ -1,7 +1,5 @@
-<Border Foreground="Transparent" MouseEnter="{Foreground=Grey}" MouseLeave="{Foreground=Transparent}">
-	<Label Font="{./Font}" Text="{./Caption}"
-		Margin="1"
-		Background="{./Background}"
-		Foreground="{./Foreground}"
-		TextAlignment="Center"/>
-</Border>
\ No newline at end of file
+<Label Font="{./Font}" Text="{./Caption}" CornerRadius="{./CornerRadius}" Width="Stretched"
+	Margin="3"
+	Background="{./Background}"
+	Foreground="{./Foreground}"
+	TextAlignment="Center"/>
\ No newline at end of file
diff --git a/Crow/Templates/ContextMenu.template b/Crow/Templates/ContextMenu.template
index 2d41ffbf..54df383c 100644
--- a/Crow/Templates/ContextMenu.template
+++ b/Crow/Templates/ContextMenu.template
@@ -3,8 +3,8 @@
 		Orientation="Vertical"
 		IsOpened ="true" IsVisible="{/IsOpened}"
 		ItemTemplate="#Crow.MenuItem.itmp">
-	<Template>		
-		<GenericStack Orientation="{./Orientation}" Name="ItemsContainer" Margin="0" Background="${MenuBackground}"/>		
+	<Template>
+		<GenericStack Orientation="{./Orientation}" Name="ItemsContainer" Margin="0" Background="${MenuBackground}"/>
 	</Template>
 </MenuItem>
 
diff --git a/Crow/Templates/FileDialog.template b/Crow/Templates/FileDialog.template
index a349905a..71ed5c2b 100644
--- a/Crow/Templates/FileDialog.template
+++ b/Crow/Templates/FileDialog.template
@@ -33,7 +33,7 @@
 											Name="ItemsContainer" Margin="0" Spacing="1"/>
 									</Scroller>
 									<ScrollBar Name="scrollbar1" Orientation="Vertical"
-										Value="{²../scroller1.ScrollY}"	Maximum="{../scroller1.MaxScrollY}" 
+										Value="{²../scroller1.ScrollY}"	Maximum="{../scroller1.MaxScrollY}"
 										CursorRatio="{../scroller1.ChildHeightRatio}"
 										LargeIncrement="{../scroller1.PageHeight}" SmallIncrement="30"
 										Width="14" />
@@ -51,8 +51,8 @@
 					<CheckBox Style="CheckBoxAlt" Name="cbShowHidden" Caption="Show Hidden" IsChecked="{²./ShowHidden}"/>
 				</HorizontalStack>
 				<HorizontalStack Fit="true" HorizontalAlignment="Right" Margin="3" Spacing="3">
-					<Button Caption="Ok" MouseClick="./onFileSelect"/>
-					<Button Caption="Cancel" MouseClick="./onCancel"/>
+					<Button Caption="Ok" Command="{./CMDOk}"/>
+					<Button Caption="Cancel" Command="{./CMDCancel}"/>
 				</HorizontalStack>
 			</VerticalStack>
 		</Container>
diff --git a/Crow/Templates/MenuButton.template b/Crow/Templates/MenuButton.template
index abc3ff2c..8025954b 100644
--- a/Crow/Templates/MenuButton.template
+++ b/Crow/Templates/MenuButton.template
@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<Button Command="{}" Width="Stretched">
+<Button Command="{}" Width="Stretched" BubbleEvents="All">
 	<Template>
 		<Label Text="{./Caption}" Width="Stretched" Height="Stretched" Margin="3"
 						MouseEnter="{Background=${ControlHighlight}}"
diff --git a/Crow/Templates/MenuItem.itmp b/Crow/Templates/MenuItem.itmp
index 7bbf2765..b1d062ab 100644
--- a/Crow/Templates/MenuItem.itmp
+++ b/Crow/Templates/MenuItem.itmp
@@ -2,6 +2,7 @@
 <ItemTemplate DataType="Crow.Command" Path="#Crow.MenuButton.template"/>
 <ItemTemplate DataType="Crow.CommandGroup" Data="Commands">
 	<Popper PopDirection="Right" Caption="{Caption}" IsEnabled="{CanExecute}" Width="Stretched"
+			BubbleEvents="All"
 			MouseEnter="{Background=${ControlHighlight}}"
 			MouseLeave="{Background=Transparent}">
 		<Template>
@@ -9,7 +10,7 @@
 				<Label Text="{./Caption}"   Width="Fit" Height="Stretched"/>
 				<Label Text="..."/>
 			</HorizontalStack>
-		</Template>		
+		</Template>
 		<VerticalStack Margin="0" Name="ItemsContainer" Fit="true" Background="${MenuBackground}"/>
 	</Popper>
 </ItemTemplate>
diff --git a/Crow/Templates/MenuItem.template b/Crow/Templates/MenuItem.template
index 4945b009..4075be94 100644
--- a/Crow/Templates/MenuItem.template
+++ b/Crow/Templates/MenuItem.template
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <ListItem>
 	<Popper Font="{./Font}" Caption="{./Caption}"  Background="{./Background}" PopDirection="{./PopDirection}"
-		Foreground = "{./Foreground}" BubbleMouseEvent="All"
+		Foreground = "{./Foreground}" BubbleEvents="All"
 		IsPopped="{²./IsOpened}" PopWidth="{./PopWidth}" PopHeight="{./PopHeight}">
 		<Template>
 			
diff --git a/Crow/Templates/Popper.template b/Crow/Templates/Popper.template
index 2a0a0de5..6f3b8440 100644
--- a/Crow/Templates/Popper.template
+++ b/Crow/Templates/Popper.template
@@ -1,8 +1,8 @@
 <?xml version="1.0"?>
 <Border Style="ControlBorder" Background="{./Background}" CornerRadius="{./CornerRadius}">
 	<HorizontalStack Spacing="1">
-		<Image Style="Icon" 
-			MouseEnter="{Background=White}" MouseLeave="{Background=Transparent}"					
+		<Image Style="Icon"
+			MouseEnter="{Background=White}" MouseLeave="{Background=Transparent}"
 			Path="#Crow.Icons.expandable.svg" SvgSub="{./IsPopped}"/>
 		<Label Style="ControlCaption" Text="{./Caption}" Foreground="{./Foreground}"/>
 	</HorizontalStack>
diff --git a/Crow/src/Colors.cs b/Crow/src/Colors.cs
index 323cba2e..d24f5e94 100644
--- a/Crow/src/Colors.cs
+++ b/Crow/src/Colors.cs
@@ -327,18 +327,18 @@ namespace Crow
 			=> value == (UInt32)other;*/
 
 		public bool Equals (Color other)
-			=> value == other.value;		
+			=> value == other.value;
 		public override int GetHashCode ()
 			=> value.GetHashCode ();
 
 		public override string ToString()
 			=> EnumsNET.Enums.IsValid<Colors> ((Colors)value) ? EnumsNET.Enums.GetName((Colors)value) : HtmlCode;
-			
+
 		public static Color FromIml (string iml)
 		{
 			Span<double> components = stackalloc double[4];
 			components[3] = 1;//init alpha to 1 so that it can be ommitted
-			ReadOnlySpan<char> c = iml.AsSpan ();			
+			ReadOnlySpan<char> c = iml.AsSpan ();
 			int i = 0;
 			int ioc = c.IndexOf (',');
 
@@ -347,7 +347,7 @@ namespace Crow
 				c = c.Slice (ioc + 1);
 				ioc = c.IndexOf (',');
 			}
-			components[i++] = double.Parse (c);			
+			components[i++] = double.Parse (c);
 			return new Color (components);
 		}
 
diff --git a/Crow/src/DebugUtils/DbgEvent.cs b/Crow/src/DebugUtils/DbgEvent.cs
index 1b6144f2..e3144d90 100644
--- a/Crow/src/DebugUtils/DbgEvent.cs
+++ b/Crow/src/DebugUtils/DbgEvent.cs
@@ -50,7 +50,7 @@ namespace Crow.DebugLogger
 				return null;
 			string [] tmp = str.Trim ().Split (';', StringSplitOptions.None);
 
-			DbgEvtType evtType = (DbgEvtType)Enum.Parse (typeof (DbgEvtType), tmp [3]);			
+			DbgEvtType evtType = (DbgEvtType)Enum.Parse (typeof (DbgEvtType), tmp [3]);
 
 			if (evtType.HasFlag (DbgEvtType.Widget)) {
 				if (evtType.HasFlag (DbgEvtType.Layouting))
@@ -109,13 +109,13 @@ namespace Crow.DebugLogger
 				case DbgEvtType.Update:
 					return Colors.Grey;
 				case DbgEvtType.IFaceLoad:
-					return Colors.Teal;				
+					return Colors.Teal;
 				default:
 					if (type.HasFlag(DbgEvtType.Mouse))
 						return Colors.DeepPink;
 					return Colors.White;
 				}
 			}
-		}		
+		}
 	}
 }
\ No newline at end of file
diff --git a/Crow/src/DebugUtils/DbgEvtType.cs b/Crow/src/DebugUtils/DbgEvtType.cs
index 4acd1d27..dff68490 100644
--- a/Crow/src/DebugUtils/DbgEvtType.cs
+++ b/Crow/src/DebugUtils/DbgEvtType.cs
@@ -9,25 +9,25 @@ namespace Crow
 	[Flags]
 	public enum DbgEvtType : Int32 {
 		None							= 0,
-		IFace							= 0x40000000,
-		Widget 							= 0x20000000,
+		IFace							= 0x00000100,
+		Widget 							= 0x00000200,
 
-		Warning 						= 0x10000000,
-		Error							= 0x08000000,
+		Warning 						= 0x00000400,
+		Error							= 0x00000800,
 
-		Binding							= 0x800000,
-		Lock 							= 0x400000,
-		Layouting	 					= 0x200000,
-		Clipping						= 0x100000,
-		Drawing							= 0x080000,
+		Binding							= 0x00001000,
+		Lock 							= 0x00002000,
+		Layouting	 					= 0x00004000,
+		Clipping						= 0x00008000,
+		Drawing							= 0x00010000,
 
-		Focus							= 0x040000,
-		Override						= 0x020000,
-		TemplatedGroup					= 0x010000,
-		Dispose		 					= 0x008000,
-		Mouse		 					= 0x004000,
+		Focus							= 0x00020000,
+		Override						= 0x00040000,
+		TemplatedGroup					= 0x00080000,
+		Dispose		 					= 0x00100000,
+		Mouse		 					= 0x00200000,
 
-		Update							= IFace | 0x004000,
+		Update							= IFace | 0x00100000,
 		ProcessLayouting				= IFace | Update | Lock | Layouting,
 		ClippingRegistration			= IFace | Update | Lock | Clipping,
 		ProcessDrawing					= IFace | Update | Lock | Drawing,
@@ -90,9 +90,14 @@ namespace Crow
 		MouseDown						= IFace | Mouse | 0x01,
 		MouseUp							= IFace | Mouse | 0x02,
 		MouseMove						= IFace | Mouse | 0x03,
-		GOMouseDown						= Widget | Mouse | 0x01,
-		GOMouseUp						= Widget | Mouse | 0x02,
-		GOMouseMove						= Widget | Mouse | 0x03,
+		MouseEnter						= Widget | Mouse | 0x01,
+		MouseLeave						= Widget | Mouse | 0x02,
+		WidgetMouseMove					= Widget | Mouse | 0x03,
+		WidgetMouseDown					= Widget | Mouse | 0x04,
+		WidgetMouseUp					= Widget | Mouse | 0x05,
+		WidgetMouseWheel				= Widget | Mouse | 0x06,
+		WidgetMouseClick				= Widget | Mouse | 0x07,
+		WidgetMouseDblClick				= Widget | Mouse | 0x08,
 
 		All = 0x7FFFFF00
 	}
diff --git a/Crow/src/DebugUtils/DbgWidgetEvent.cs b/Crow/src/DebugUtils/DbgWidgetEvent.cs
index d147ba25..cf61a79b 100644
--- a/Crow/src/DebugUtils/DbgWidgetEvent.cs
+++ b/Crow/src/DebugUtils/DbgWidgetEvent.cs
@@ -6,7 +6,7 @@ using System.Collections.Generic;
 using System.Threading;
 
 namespace Crow.DebugLogger
-{	
+{
 	public class DbgWidgetEvent : DbgEvent
 	{
 		public int InstanceIndex;
@@ -17,7 +17,7 @@ namespace Crow.DebugLogger
 			InstanceIndex = widgetInstanceIndex;
 		}
 		//public override string Print() => $"{base.Print()}:{InstanceIndex}"
-		
+
         public override string ToString ()
 			=> $"{base.ToString ()};{InstanceIndex}";
 		public override Color Color {
@@ -76,6 +76,6 @@ namespace Crow.DebugLogger
 					return Colors.White;
 				}
 			}
-		}			
-	}	
+		}
+	}
 }
\ No newline at end of file
diff --git a/Crow/src/DebugUtils/DebugLogger.cs b/Crow/src/DebugUtils/DebugLogger.cs
index b84077a6..d549e19d 100644
--- a/Crow/src/DebugUtils/DebugLogger.cs
+++ b/Crow/src/DebugUtils/DebugLogger.cs
@@ -1,8 +1,7 @@
-using System.Text;
-// Copyright (c) 2013-2021  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)
-
+using System.Text;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
@@ -16,18 +15,21 @@ namespace Crow
 {
 	public static class DbgLogger
 	{
-		public static DbgEvtType IncludeEvents = DbgEvtType.All;
-		public static DbgEvtType DiscardEvents = DbgEvtType.Focus;
+		/*public static DbgEvtType IncludeEvents = DbgEvtType.All;
+		public static DbgEvtType DiscardEvents = DbgEvtType.Focus;*/
+
+		public static List<DbgEvtType> IncludedEvents = new List<DbgEvtType> ();
 		public static bool ConsoleOutput = true;
 
 
 #if DEBUG_LOG
-		static bool logevt (DbgEvtType evtType)
-			//=> IncludeEvents != DbgEvtType.None && (evtType & DiscardEvents) == 0 && (evtType & IncludeEvents) == IncludeEvents;
-			//=> IncludeEvents != DbgEvtType.None && (evtType & DiscardEvents) == 0 && (evtType & IncludeEvents) == IncludeEvents;
-			=> IncludeEvents == DbgEvtType.All || (IncludeEvents != DbgEvtType.None && (evtType & IncludeEvents) != 0);
-
-
+		static bool logevt (DbgEvtType evtType) {
+			foreach (DbgEvtType et in IncludedEvents) {
+				if ((et & evtType) == et)
+					return true;
+			}
+			return false;
+		}
 
 		static object logMutex = new object ();
 		static Stopwatch chrono = Stopwatch.StartNew ();
diff --git a/Crow/src/IML/CompilerServices.cs b/Crow/src/IML/CompilerServices.cs
index 69c74e42..3888ceaf 100644
--- a/Crow/src/IML/CompilerServices.cs
+++ b/Crow/src/IML/CompilerServices.cs
@@ -386,29 +386,34 @@ namespace Crow.IML
 		}
 		internal static MethodInfo SearchExtMethod (Type t, string methodName)
 		{
-			string key = t.Name + "." + methodName;
-			lock (knownExtMethods) {
-				if (knownExtMethods.ContainsKey (key))
-					return knownExtMethods [key];
+			try {
+				string key = t.Name + "." + methodName;
+				lock (knownExtMethods) {
+					if (knownExtMethods.ContainsKey (key))
+						return knownExtMethods [key];
 
-				//System.Diagnostics.Console.WriteLine ($"*** search extension method: {t};{methodName} => key={key}");
+					//System.Diagnostics.Console.WriteLine ($"*** search extension method: {t};{methodName} => key={key}");
 
-				MethodInfo mi = null;
-				if (!TryGetExtensionMethods (Assembly.GetEntryAssembly (), t, methodName, out mi)) {
-					if (!TryGetExtensionMethods (t.Module.Assembly, t, methodName, out mi)) {
-						foreach (Assembly a in Interface.crowAssemblies) {
-							if (TryGetExtensionMethods (a, t, methodName, out mi))
-								break;
+					MethodInfo mi = null;
+					if (!TryGetExtensionMethods (Assembly.GetEntryAssembly (), t, methodName, out mi)) {
+						if (!TryGetExtensionMethods (t.Module.Assembly, t, methodName, out mi)) {
+							foreach (Assembly a in Interface.crowAssemblies) {
+								if (TryGetExtensionMethods (a, t, methodName, out mi))
+									break;
+							}
+							if (mi == null)
+								TryGetExtensionMethods (Assembly.GetExecutingAssembly (), t, methodName, out mi);//crow Assembly
 						}
-						if (mi == null)
-							TryGetExtensionMethods (Assembly.GetExecutingAssembly (), t, methodName, out mi);//crow Assembly
 					}
-				}
 
-				//add key even if mi is null to prevent searching again and again for propertyless bindings
-				knownExtMethods.Add (key, mi);
-				return mi;
+					//add key even if mi is null to prevent searching again and again for propertyless bindings
+					knownExtMethods.Add (key, mi);
+					return mi;
+				}
+			} catch (Exception e) {//added this catch for CrowEdit, ext method should be search with appropriate LoadContext.
+				Debug.WriteLine ($"[CompilerServices.SearchExtMethod]{e}");
 			}
+			return null;
 		}
 
 		public static bool TryGetExtensionMethods (Assembly assembly, Type extendedType, string methodName, out MethodInfo foundMI)
diff --git a/Crow/src/IML/Instantiator.cs b/Crow/src/IML/Instantiator.cs
index 07ebfd3c..2acace29 100644
--- a/Crow/src/IML/Instantiator.cs
+++ b/Crow/src/IML/Instantiator.cs
@@ -214,7 +214,7 @@ namespace Crow.IML {
 			while (reader.NodeType != XmlNodeType.Element)
 				reader.Read ();
 			root = reader.Name;
-			Type t = GetWidgetTypeFromName (root);
+			Type t = iface.GetWidgetTypeFromName (root);
 			if (t == null)
 				throw new Exception ("IML parsing error: undefined root type (" + root + ")");
 			return t;
@@ -323,7 +323,8 @@ namespace Crow.IML {
 				}
 				if (itemTemplateIds.Count == 0) {
 					//try to load ItemTemplate(s) from ItemTemplate property of TemplatedGroup
-					if (!string.IsNullOrEmpty (itemTemplatePath)) {
+					//but don't if it's an binding expression
+					if (!string.IsNullOrEmpty (itemTemplatePath) && !itemTemplatePath.StartsWith('{')) {
 						//check if it is already loaded in cache as a single itemTemplate instantiator
 						if (iface.ItemTemplates.ContainsKey (itemTemplatePath))
 							itemTemplateIds.Add (new string [] { "default", itemTemplatePath, "" });
@@ -357,23 +358,30 @@ namespace Crow.IML {
 				}
 			}
 		}
+		//TODO(09/2021):output an ItemTemplateDecl object instead of an array of string
 		public static IEnumerable<string[]> loadItemTemplatesFromTemplatedGroupProperty (Interface iface, string itemTemplatePath) {
 			using (Stream stream = iface.GetStreamFromPath (itemTemplatePath)) {
-				//itemtemplate files may have multiple root nodes
-				XmlReaderSettings itrSettings = new XmlReaderSettings { ConformanceLevel = ConformanceLevel.Fragment };
-				using (XmlReader itr = XmlReader.Create (stream, itrSettings)) {
-					while (itr.Read ()) {
-						if (!itr.IsStartElement ())
-							continue;
-						if (itr.NodeType == XmlNodeType.Element) {
-							if (itr.Name != NT_iTemp) {
-								//the file contains a single template to use as default
-								iface.ItemTemplates [itemTemplatePath] = new ItemTemplate (iface, itr);
-								yield return new string [] { "default", itemTemplatePath, "", "TypeOf" };
-								break;//we should be at the end of the file
-							}
-							yield return parseItemTemplateTag (iface, itr, itemTemplatePath);
+				foreach (string[] item in loadItemTemplatesFromTemplatedGroupProperty (iface, stream, itemTemplatePath))
+					yield return item;
+			}
+		}
+		public static IEnumerable<string[]> loadItemTemplatesFromTemplatedGroupProperty (Interface iface, Stream stream, string itemTemplatePath = null) {
+			if (string.IsNullOrEmpty (itemTemplatePath))
+				itemTemplatePath = Guid.NewGuid().ToString();
+			//itemtemplate files may have multiple root nodes
+			XmlReaderSettings itrSettings = new XmlReaderSettings { ConformanceLevel = ConformanceLevel.Fragment };
+			using (XmlReader itr = XmlReader.Create (stream, itrSettings)) {
+				while (itr.Read ()) {
+					if (!itr.IsStartElement ())
+						continue;
+					if (itr.NodeType == XmlNodeType.Element) {
+						if (itr.Name != NT_iTemp) {
+							//the file contains a single template to use as default
+							iface.ItemTemplates [itemTemplatePath] = new ItemTemplate (iface, itr);
+							yield return new string [] { "default", itemTemplatePath, "", "TypeOf" };
+							break;//we should be at the end of the file
 						}
+						yield return parseItemTemplateTag (iface, itr, itemTemplatePath);
 					}
 				}
 			}
@@ -543,7 +551,7 @@ namespace Crow.IML {
 					ctx.il.Emit (OpCodes.Ldloc_0);
 					ctx.il.Emit (OpCodes.Ldloc_0);
 
-					Type t = GetWidgetTypeFromName (reader.Name);
+					Type t = iface.GetWidgetTypeFromName (reader.Name);
 					if (t == null)
 						throw new Exception (reader.Name + " type not found");
 					ConstructorInfo ci = t.GetConstructor (
diff --git a/Crow/src/Input/KeyPressEventArgs.cs b/Crow/src/Input/KeyPressEventArgs.cs
index cb4e534c..17d1fee2 100644
--- a/Crow/src/Input/KeyPressEventArgs.cs
+++ b/Crow/src/Input/KeyPressEventArgs.cs
@@ -13,7 +13,7 @@ namespace Crow
     public class KeyPressEventArgs : CrowEventArgs
     {
         char key_char;
-        
+
         /// <summary>
         /// Constructs a new instance.
         /// </summary>
diff --git a/Crow/src/Interface.cs b/Crow/src/Interface.cs
index ede2927e..46645dee 100644
--- a/Crow/src/Interface.cs
+++ b/Crow/src/Interface.cs
@@ -360,8 +360,46 @@ namespace Crow
 			}
 		}
 
-		internal Dictionary<string, MethodInfo> knownExtMethods = new Dictionary<string, MethodInfo> ();
-		internal MethodInfo SearchExtMethod (Type t, string methodName) {
+		protected Dictionary<string, MethodInfo> knownExtMethods;
+		protected Dictionary<string, Type> knownCrowWidgetTypes;
+
+		/// <summary>
+		/// search for graphic object type in crow assembly, if not found,
+		/// search for type independently of namespace in all the loaded assemblies
+		/// </summary>
+		/// <remarks>
+		/// </remarks>
+		/// <returns>the corresponding type object</returns>
+		/// <param name="typeName">graphic object type name without its namespace</param>
+		public virtual Type GetWidgetTypeFromName (string typeName){
+			if (knownCrowWidgetTypes.ContainsKey (typeName))
+				return knownCrowWidgetTypes [typeName];
+			Type t = Type.GetType ("Crow." + typeName);
+			if (t != null) {
+				knownCrowWidgetTypes.Add (typeName, t);
+				return t;
+			}
+
+			foreach (Type expT in Assembly.GetEntryAssembly ().GetExportedTypes ()) {
+				if (expT.Name != typeName)
+					continue;
+				knownCrowWidgetTypes.Add (typeName, expT);
+				return expT;
+			}
+
+			foreach (Assembly a in Interface.crowAssemblies) {
+				foreach (Type expT in a.GetExportedTypes ()) {
+					if (expT.Name != typeName)
+						continue;
+					knownCrowWidgetTypes.Add (typeName, expT);
+					return expT;
+				}
+			}
+			return null;
+		}
+
+
+		public virtual MethodInfo SearchExtMethod (Type t, string methodName) {
 			string key = t.Name + "." + methodName;
 			if (knownExtMethods.ContainsKey (key))
 				return knownExtMethods [key];
@@ -790,6 +828,8 @@ namespace Crow
 			DefaultValuesLoader = new Dictionary<string, LoaderInvoker> (initCapacity);
 			Instantiators = new Dictionary<string, Instantiator> (initCapacity);
 			ItemTemplates = new Dictionary<string, ItemTemplate> (initCapacity);
+			knownCrowWidgetTypes = new Dictionary<string, Type> (initCapacity);
+			knownExtMethods = new Dictionary<string, MethodInfo> (initCapacity);
 		}
 		void loadThemeFiles () {
 			if (string.IsNullOrEmpty (Theme))
@@ -1033,6 +1073,9 @@ namespace Crow
 				}
 
 				_hoverWidget = value;
+				if (_hoverWidget.ToString() == "HelloWorld.Program.vs2.Border12")
+					Debugger.Break();
+
 
 				NotifyValueChanged ("HoverWidget", _hoverWidget);
 				DbgLogger.AddEvent (DbgEvtType.HoverWidget, _hoverWidget);
@@ -1840,10 +1883,12 @@ namespace Crow
 					return true;
 				}
 
-				if (doubleClickTriggered)
-					_activeWidget.onMouseDoubleClick (_activeWidget, new MouseButtonEventArgs (MousePosition.X, MousePosition.Y, button, InputAction.Press));
-				else
-					_activeWidget.onMouseClick (_activeWidget, new MouseButtonEventArgs (MousePosition.X, MousePosition.Y, button, InputAction.Press));
+				if (_focusedWidget != null &&_focusedWidget.MouseIsIn(MousePosition)) {
+					if (doubleClickTriggered)
+						_activeWidget.onMouseDoubleClick (_activeWidget, new MouseButtonEventArgs (MousePosition.X, MousePosition.Y, button, InputAction.Press));
+					else
+						_activeWidget.onMouseClick (_activeWidget, new MouseButtonEventArgs (MousePosition.X, MousePosition.Y, button, InputAction.Press));
+				}
 
 				ActiveWidget = null;
 				//			if (!lastActive.MouseIsIn (Mouse.Position)) {
@@ -2057,7 +2102,7 @@ namespace Crow
 				else
 					ctxMenuContainer.IsOpened = true;
 
-				ctxMenuContainer.BubbleMouseEvent = DeviceEventType.None;
+				ctxMenuContainer.BubbleEvents = DeviceEventType.None;
 				ctxMenuContainer.LogicalParent = go;
 				ctxMenuContainer.DataSource = go;
 
diff --git a/Crow/src/ItemTemplate.cs b/Crow/src/ItemTemplate.cs
index 9fcbd7fb..c263b656 100644
--- a/Crow/src/ItemTemplate.cs
+++ b/Crow/src/ItemTemplate.cs
@@ -14,7 +14,10 @@ using System.Diagnostics;
 using System.Linq;
 using Crow.IML;
 using System.Collections;
-
+//TODO(09/2021): itemTemplate are created  with datatest and datatype only to be able
+//to get their original iml, but itor part takes no advantage of it.
+//One advantage could be to set the DataSourceType (which speed bindings by bypassing reflection)
+//at the root level of the item template if the dataTest is 'typeOf'...
 namespace Crow
 {
 	/// <summary> Test func on data, return yes if there's children </summary>
diff --git a/Crow/src/Text/SpanCharReader.cs b/Crow/src/Text/SpanCharReader.cs
index 6c6fcde0..5b206575 100644
--- a/Crow/src/Text/SpanCharReader.cs
+++ b/Crow/src/Text/SpanCharReader.cs
@@ -32,27 +32,27 @@ namespace Crow.Text
 			return true;
 		}
 		public bool TryRead (char c) => EndOfSpan ? false : Read() == c;
-					
+
 		public ReadOnlySpan<char> Read (int length) => buffer.Slice (curPos += length, length);
 		public void Advance (int increment = 1) => curPos += increment;
-		public bool TryAdvance (int increment = 1) {			
+		public bool TryAdvance (int increment = 1) {
 			curPos += increment;
 			return curPos < buffer.Length;
 		}
-		
+
 		public bool TryReadUntil (ReadOnlySpan<char> str, StringComparison comparison = StringComparison.Ordinal) {
 			int startPos = curPos;
 			while (curPos < buffer.Length - str.Length) {
 				if (buffer[curPos] == str[0] && buffer.Slice(curPos + 1, str.Length - 1).Equals(str.Slice (1), comparison))
 					return true;
-				curPos++;			
+				curPos++;
 			}
 			return false;
 		}
 		public bool TryReadUntil (char c) {
 			int startPos = curPos;
 			while (curPos < buffer.Length && buffer[curPos] != c)
-				curPos++;			
+				curPos++;
 			return curPos < buffer.Length;
 		}
 		public bool TryRead (int length, out ReadOnlySpan<char> str) {
@@ -63,7 +63,7 @@ namespace Crow.Text
 			str = default;
 			return false;
 		}
-		
+
 		/// <summary>
 		/// Try read expected string and advance reader position in any case
 		/// </summary>
@@ -81,22 +81,68 @@ namespace Crow.Text
 		}
 		public bool TryPeak (ReadOnlySpan<char> expectedString, StringComparison comparison = StringComparison.Ordinal) =>
 			 (buffer.Length < curPos + expectedString.Length)? false :
-						buffer.Slice(curPos, expectedString.Length).Equals (expectedString, comparison);			
-			
+						buffer.Slice(curPos, expectedString.Length).Equals (expectedString, comparison);
+
+		/// <summary>
+		/// Retrieve a span of that buffer from provided starting position to the current reader position.
+		/// </summary>
+		/// <param name="fromPosition"></param>
+		/// <returns></returns>
         public ReadOnlySpan<char> Get (int fromPosition) => buffer.Slice (fromPosition, curPos - fromPosition);
-        public bool EndOfSpan => curPos >= buffer.Length;
+        /// <summary>
+        /// Current reader position is further the end of the buffer.
+        /// </summary>
+		public bool EndOfSpan => curPos >= buffer.Length;
 		public bool TryPeak (char c) => !EndOfSpan && Peak == c;
+		/// <summary>
+		/// Try peak one char, return false if end of span, true otherwise.
+		/// </summary>
+		/// <param name="c"></param>
+		/// <returns></returns>
 		public bool TryPeak (ref char c) {
 			if (EndOfSpan)
 				return false;
 			c = buffer[curPos];
 			return true;
 		}
+		/// <summary>
+		/// test if next char is one of the provided one as parameter
+		/// </summary>
+		/// <param name="chars"></param>
+		/// <returns></returns>
  		public bool IsNextCharIn (params char[] chars) {
 			for (int i = 0; i < chars.Length; i++)
 				if (chars[i] == buffer[curPos])
 					return true;
 			return false;
 		}
+		/// <summary>
+		/// increment reader position just before the next end of line
+		/// </summary>
+		public void AdvanceUntilEol () {
+			while(!EndOfSpan) {
+				switch (Peak) {
+					case '\x85':
+					case '\x2028':
+					case '\xA':
+						return;
+					case '\xD':
+						int nextPos = curPos + 1;
+						if (nextPos == buffer.Length || buffer[nextPos] == '\xA' || buffer[nextPos] == '\x85')
+							return;
+						break;
+				}
+				Advance ();
+			}
+		}
+		/// <summary>
+		/// Next char or pair of chars is end of line.
+		/// </summary>
+		/// <returns></returns>
+		public bool Eol () {
+			return Peak == '\x85' || Peak == '\x2028' || Peak == '\xA' || curPos + 1 == buffer.Length ||
+				(Peak == '\xD' && (buffer [curPos + 1]  == '\xA' || buffer [curPos + 1]  == '\x85'));
+
+		}
     }
 }
diff --git a/Crow/src/Widgets/Expandable.cs b/Crow/src/Widgets/Expandable.cs
index 95e743ea..62b0f1c3 100644
--- a/Crow/src/Widgets/Expandable.cs
+++ b/Crow/src/Widgets/Expandable.cs
@@ -58,6 +58,7 @@ namespace Crow
 		public void onClickForExpand (object sender, MouseButtonEventArgs e)
 		{
 			IsExpanded = !IsExpanded;
+			e.Handled = true;
 		}
 
 		#region Public properties
diff --git a/Crow/src/Widgets/FileDialog.cs b/Crow/src/Widgets/FileDialog.cs
index bc6b46c0..302818bf 100644
--- a/Crow/src/Widgets/FileDialog.cs
+++ b/Crow/src/Widgets/FileDialog.cs
@@ -14,9 +14,17 @@ namespace Crow
 	public class FileDialog: Window
 	{
 		#region CTOR
-		protected FileDialog() : base(){}
+		protected FileDialog() : base() {}
 		public FileDialog (Interface iface) : base(iface){}
 		#endregion
+		protected override void loadTemplate(Widget template = null)
+		{
+			if (CMDOk == null) {
+ 				CMDOk = new ActionCommand (this, "Ok", validate, null, new KeyBinding (Glfw.Key.Enter));
+				CMDCancel = new ActionCommand (this, "Cancel", () => IFace.DeleteWidget (this), null, new KeyBinding (Glfw.Key.Escape));
+			}
+			base.loadTemplate(template);
+		}
 
 		string searchPattern, curDir, _selectedFile, _selectedDir;
 		bool showHidden, showFiles;
@@ -25,6 +33,9 @@ namespace Crow
 		public event EventHandler OkClicked;
 		#endregion
 
+		[XmlIgnore]public ActionCommand CMDOk { get; set;}
+		[XmlIgnore]public ActionCommand CMDCancel { get; set;}
+
 		public string SelectedFileFullPath {
 			get { return Path.Combine (SelectedDirectory, SelectedFile); }
 		}
@@ -115,20 +126,22 @@ namespace Crow
 			CurrentDirectory = SelectedDirectory;
 		}
 
-		void onFileSelect (object sender, MouseButtonEventArgs e){
+		void validate () {
 			if (ShowFiles) {
 				if (string.IsNullOrEmpty (SelectedFile)) {
 					CurrentDirectory = SelectedDirectory;
 					return;
-				} 									
+				}
 			}
 			OkClicked.Raise (this, null);
 			IFace.DeleteWidget (this);
 		}
-		void onCancel(object sender, MouseButtonEventArgs e){
-			IFace.DeleteWidget (this);
+		protected override void Dispose(bool disposing)
+		{
+			CMDOk?.Dispose ();
+			CMDCancel?.Dispose ();
+			base.Dispose(disposing);
 		}
-
 	}
 }
 
diff --git a/Crow/src/Widgets/MenuItem.cs b/Crow/src/Widgets/MenuItem.cs
index e9160095..fd5a4984 100644
--- a/Crow/src/Widgets/MenuItem.cs
+++ b/Crow/src/Widgets/MenuItem.cs
@@ -140,7 +140,8 @@ namespace Crow
 		{
 			if (IsOpened)
 				IsOpened = false;
-			base.onMouseLeave (this, e);
+			if (mouseIsEntered)
+				base.onMouseLeave (this, e);
 		}
 		public override void onMouseClick (object sender, MouseButtonEventArgs e)
 		{
diff --git a/Crow/src/Widgets/TemplatedGroup.cs b/Crow/src/Widgets/TemplatedGroup.cs
index 6621c27c..e67625fe 100644
--- a/Crow/src/Widgets/TemplatedGroup.cs
+++ b/Crow/src/Widgets/TemplatedGroup.cs
@@ -6,6 +6,7 @@ using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.ComponentModel;
+using System.IO;
 using System.Linq;
 using System.Threading;
 
@@ -114,13 +115,33 @@ namespace Crow {
 			ItemTemplates.Clear();
 			if (string.IsNullOrEmpty (_itemTemplate))
 				return;
-			foreach	(string[] itempIds in Instantiator.loadItemTemplatesFromTemplatedGroupProperty (IFace, _itemTemplate)) {
-				ItemTemplate itemp = IFace.GetItemTemplate (itempIds[1]);
-				ItemTemplates.Add (itempIds[0], itemp);
-				if (string.IsNullOrEmpty (itempIds[2]))
-					continue;
-				itemp.CreateExpandDelegate (this);
+			if (_itemTemplate.Trim().StartsWith('<')) {//iml fragment in property
+				using (Stream stream = new MemoryStream (System.Text.Encoding.UTF8.GetBytes (_itemTemplate))) {
+					foreach	(string[] itempIds in Instantiator.loadItemTemplatesFromTemplatedGroupProperty (IFace, stream)) {
+						ItemTemplate itemp = IFace.GetItemTemplate (itempIds[1]);
+						ItemTemplates.Add (itempIds[0], itemp);
+						if (string.IsNullOrEmpty (itempIds[2]))
+							continue;
+						itemp.CreateExpandDelegate (this);
+					}
+				}
+			} else {
+				foreach	(string[] itempIds in Instantiator.loadItemTemplatesFromTemplatedGroupProperty (IFace, _itemTemplate)) {
+					ItemTemplate itemp = IFace.GetItemTemplate (itempIds[1]);
+					ItemTemplates.Add (itempIds[0], itemp);
+					if (string.IsNullOrEmpty (itempIds[2]))
+						continue;
+					itemp.CreateExpandDelegate (this);
+				}
 			}
+			realoadDatas ();
+		}
+		void realoadDatas () {
+			if (data == null)
+				return;
+			IEnumerable dataSave = data;
+			Data = null;
+			Data = dataSave;
 		}
 		protected override void loadTemplate(Widget template = null)
 		{
@@ -234,8 +255,10 @@ namespace Crow {
 				lock (IFace.UpdateMutex)
 					ClearItems ();
 
-				if (data == null)
+				if (data == null) {
+					NotifyValueChanged ("HasItems", false);
 					return;
+				}
 
 				if (data is ICollection c) {
 					if (c.Count == 0) {
@@ -504,7 +527,7 @@ namespace Crow {
 					itempKey = dataType.FullName;//fallback to full type name
 				}
 			}
-			if (ItemTemplates.ContainsKey (itempKey))
+			if (!string.IsNullOrEmpty (itempKey) && ItemTemplates.ContainsKey (itempKey))
 				iTemp = ItemTemplates [itempKey];
 			else {
 				if (_dataTest == "TypeOf") {//item template selection on full type name
diff --git a/Crow/src/Widgets/Widget.cs b/Crow/src/Widgets/Widget.cs
index 0b5b4463..1f7c1b08 100644
--- a/Crow/src/Widgets/Widget.cs
+++ b/Crow/src/Widgets/Widget.cs
@@ -27,7 +27,7 @@ namespace Crow
 	/// <summary>
 	/// The base class for all the graphic tree elements.
 	/// </summary>
-	public class Widget : ILayoutable, IValueChange, IDisposable
+	public class Widget : ILayoutable, ICommandHost, IDisposable
 	{
 		internal ReaderWriterLockSlim parentRWLock = new ReaderWriterLockSlim(LockRecursionPolicy.SupportsRecursion);
 #if DEBUG_LOG
@@ -140,9 +140,7 @@ namespace Crow
 			}
 			return di;
 		}
-		public string DesignName {
-			get { return GetType ().Name + design_id; }
-		}
+		public string DesignName => LogName + design_id;
 #endif
 
 		#region IDisposable implementation
@@ -558,7 +556,7 @@ namespace Crow
 		public virtual string Name {
 			get {
 #if DEBUG_LOG
-				return string.IsNullOrEmpty(name) ? this.GetType().Name + GraphicObjects.IndexOf(this).ToString () : name;
+				return string.IsNullOrEmpty(name) ? this.LogName + GraphicObjects.IndexOf(this).ToString () : name;
 #else
 				return name;
 #endif
@@ -774,7 +772,7 @@ namespace Crow
 		/// </summary>
 		[DesignCategory ("Behaviour")]
 		[DefaultValue (DeviceEventType.All)]
-		public virtual DeviceEventType BubbleMouseEvent {
+		public virtual DeviceEventType BubbleEvents {
 			get => bubbledEvents;
 			set {
 				if (bubbledEvents == value)
@@ -1971,7 +1969,6 @@ namespace Crow
 				ctx.Fill ();
 				ctx.Operator = Operator.Over;
 			}
-
 			ctx.SetSource (bmp, rb.X, rb.Y);
 			ctx.Paint ();
 #if VKVG
@@ -2060,19 +2057,19 @@ namespace Crow
 		public virtual void onKeyDown(object sender, KeyEventArgs e){
 			if (KeyDown != null)
 				KeyDown.Invoke (this, e);
-			else if (!e.Handled && BubbleMouseEvent.HasFlag (DeviceEventType.KeyDown))
+			else if (!e.Handled && BubbleEvents.HasFlag (DeviceEventType.KeyDown))
 				FocusParent?.onKeyDown (sender, e);
 		}
 		public virtual void onKeyUp(object sender, KeyEventArgs e){
 			if (KeyUp != null)
 				KeyUp.Invoke (this, e);
-			else if (!e.Handled && BubbleMouseEvent.HasFlag (DeviceEventType.KeyUp))
+			else if (!e.Handled && BubbleEvents.HasFlag (DeviceEventType.KeyUp))
 				FocusParent?.onKeyUp (sender, e);
 		}
 		public virtual void onKeyPress(object sender, KeyPressEventArgs e){
 			if (KeyPress != null)
 				KeyPress.Invoke (this, e);
-			else if (!e.Handled && BubbleMouseEvent.HasFlag (DeviceEventType.KeyPress))
+			else if (!e.Handled && BubbleEvents.HasFlag (DeviceEventType.KeyPress))
 				FocusParent?.onKeyPress (sender, e);
 		}
 		#endregion
@@ -2123,7 +2120,7 @@ namespace Crow
 
 			if (MouseMove != null)
 				MouseMove.Invoke (this, e);
-			else if (!e.Handled && BubbleMouseEvent.HasFlag (DeviceEventType.MouseMove))
+			else if (!e.Handled && BubbleEvents.HasFlag (DeviceEventType.MouseMove))
 				FocusParent?.onMouseMove (sender, e);
 		}
 		/// <summary>
@@ -2135,7 +2132,8 @@ namespace Crow
 		/// <param name="sender">Sender of the event</param>
 		/// <param name="e">mouse button pressed event arguments</param>
 		public virtual void onMouseDown(object sender, MouseButtonEventArgs e){
-			if (Focusable) {
+			DbgLogger.AddEvent (DbgEvtType.MouseDown, this);
+			if (Focusable && !HasFocus) {
 				IFace.FocusedWidget = this;
 				e.Handled = true;
 			}
@@ -2145,9 +2143,8 @@ namespace Crow
 				e.Handled = true;
 			}
 
-			if (MouseDown != null)
-				MouseDown?.Invoke (this, e);
-			else if (!e.Handled && BubbleMouseEvent.HasFlag (DeviceEventType.ButtonDown))
+			MouseDown?.Invoke (this, e);
+			if (!e.Handled && BubbleEvents.HasFlag (DeviceEventType.ButtonDown))
 				FocusParent?.onMouseDown (sender, e);
 		}
 		/// <summary>
@@ -2159,10 +2156,10 @@ namespace Crow
 		/// <param name="sender">Sender of the event</param>
 		/// <param name="e">mouse button release event arguments</param>
 		public virtual void onMouseUp(object sender, MouseButtonEventArgs e){
-
+			DbgLogger.AddEvent (DbgEvtType.WidgetMouseUp, this);
 			if (MouseUp != null)
 				MouseUp.Invoke (this, e);
-			else if (!e.Handled && BubbleMouseEvent.HasFlag (DeviceEventType.ButtonUp))
+			if (!e.Handled && BubbleEvents.HasFlag (DeviceEventType.ButtonUp))
 				FocusParent?.onMouseUp (sender, e);
 		}
 		/// <summary>
@@ -2171,9 +2168,10 @@ namespace Crow
 		/// <param name="sender">The Sender of the event</param>
 		/// <param name="e">event arguments</param>
 		public virtual void onMouseClick(object sender, MouseButtonEventArgs e){
+			DbgLogger.AddEvent (DbgEvtType.WidgetMouseClick, this);
 			if (MouseClick != null)
 				MouseClick.Invoke (this, e);
-			else if (!e.Handled && BubbleMouseEvent.HasFlag (DeviceEventType.MouseClick))
+			if (!e.Handled && BubbleEvents.HasFlag (DeviceEventType.MouseClick))
 				FocusParent?.onMouseClick (sender, e);
 		}
 		/// <summary>
@@ -2183,19 +2181,24 @@ namespace Crow
 		/// <param name="sender">The Sender of the event</param>
 		/// <param name="e">event arguments</param>
 		public virtual void onMouseDoubleClick(object sender, MouseButtonEventArgs e){
+			DbgLogger.AddEvent (DbgEvtType.WidgetMouseDblClick, this);
 			if (MouseDoubleClick != null)
 				MouseDoubleClick.Invoke (this, e);
-			else if (!e.Handled && BubbleMouseEvent.HasFlag (DeviceEventType.MouseClick))
+			if (!e.Handled && BubbleEvents.HasFlag (DeviceEventType.MouseClick))
 				FocusParent?.onMouseDoubleClick (sender, e);
 		}
 		public virtual void onMouseWheel(object sender, MouseWheelEventArgs e){
+			DbgLogger.AddEvent (DbgEvtType.WidgetMouseWheel, this);
 			if (MouseWheelChanged != null)
 				MouseWheelChanged.Invoke (this, e);
-			else if (!e.Handled && BubbleMouseEvent.HasFlag (DeviceEventType.MouseWheel))
+			if (!e.Handled && BubbleEvents.HasFlag (DeviceEventType.MouseWheel))
 				FocusParent?.onMouseWheel (sender, e);
 		}
+		protected bool mouseIsEntered;
 		public virtual void onMouseEnter(object sender, MouseMoveEventArgs e)
 		{
+			DbgLogger.AddEvent (DbgEvtType.MouseEnter, this);
+			mouseIsEntered = true;
 			IFace.MouseCursor = MouseCursor;
 			/*if (IFace.DragAndDropOperation != null) {
 				Widget g = this;
@@ -2216,6 +2219,8 @@ namespace Crow
 		}
 		public virtual void onMouseLeave(object sender, MouseMoveEventArgs e)
 		{
+			DbgLogger.AddEvent (DbgEvtType.MouseLeave, this);
+			mouseIsEntered = false;
 			MouseLeave.Raise (this, e);
 		}
 
@@ -2312,8 +2317,8 @@ namespace Crow
 						w = w.FocusParent;
 					}
 					this.onMouseLeave (this, e);
-					IFace.HoverWidget = null;
-					IFace.OnMouseMove (IFace.MousePosition.X, IFace.MousePosition.Y);
+					IFace.HoverWidget = FocusParent;
+					//IFace.OnMouseMove (IFace.MousePosition.X, IFace.MousePosition.Y);
 				}
 			}
 
diff --git a/Crow/src/styling/StyleReader.cs b/Crow/src/styling/StyleReader.cs
index 23e3047c..a056283a 100644
--- a/Crow/src/styling/StyleReader.cs
+++ b/Crow/src/styling/StyleReader.cs
@@ -54,7 +54,7 @@ namespace Crow
 			return (Char)Peek();
 		}
 		void SkipWhiteSpaceAndLineBreak (){
-			while (!EndOfStream){				
+			while (!EndOfStream){
 				if (!PeekChar ().IsWhiteSpaceOrNewLine ())
 					break;
 				if (ReadChar () == '\n') {
@@ -102,108 +102,108 @@ namespace Crow
 					}else
 						throw new ParserException (line, column, $"Unexpected char '{PeekChar ()}'", resId);
 					break;
-				case ',':
-					ReadChar ();
-					if (curState != States.classNames || token.Length == 0)
-						throw new ParserException (line, column, "Unexpected char ','", resId);
-					targetsClasses.Add (token.ToString());
-					token.Clear();
-					curState = States.classNames;
-					break;
-				case '{':
-					ReadChar ();
-					if (curState != States.classNames || token.Length == 0)
-						throw new ParserException (line, column, "Unexpected char '{'", resId);
-					targetsClasses.Add (token.ToString());
-					token.Clear();
-					curState = States.members;
-					break;
-				case '}':
-					ReadChar ();
-					if (curState != States.members)
-						throw new ParserException (line, column, "Unexpected char '}'", resId);
-					curState = States.classNames;
-					targetsClasses.Clear ();
-					break;
-				case '=':
-					ReadChar ();
-					if (!(curState == States.members || curState == States.classNames) || token.Length == 0)
-						throw new ParserException (line, column, "Unexpected char '='", resId);
-					currentProperty = token.ToString ();
-					token.Clear ();
-					curState = States.value;
-					break;
-				case '"':
-					if (curState != States.value)
-						throw new ParserException (line, column, "Unexpected char '\"'", resId);
-					ReadChar ();
+					case ',':
+						ReadChar ();
+						if (curState != States.classNames || token.Length == 0)
+							throw new ParserException (line, column, "Unexpected char ','", resId);
+						targetsClasses.Add (token.ToString());
+						token.Clear();
+						curState = States.classNames;
+						break;
+					case '{':
+						ReadChar ();
+						if (curState != States.classNames || token.Length == 0)
+							throw new ParserException (line, column, "Unexpected char '{'", resId);
+						targetsClasses.Add (token.ToString());
+						token.Clear();
+						curState = States.members;
+						break;
+					case '}':
+						ReadChar ();
+						if (curState != States.members)
+							throw new ParserException (line, column, "Unexpected char '}'", resId);
+						curState = States.classNames;
+						targetsClasses.Clear ();
+						break;
+					case '=':
+						ReadChar ();
+						if (!(curState == States.members || curState == States.classNames) || token.Length == 0)
+							throw new ParserException (line, column, "Unexpected char '='", resId);
+						currentProperty = token.ToString ();
+						token.Clear ();
+						curState = States.value;
+						break;
+					case '"':
+						if (curState != States.value)
+							throw new ParserException (line, column, "Unexpected char '\"'", resId);
+						ReadChar ();
 
-					while (!EndOfStream) {
-						char c = ReadChar ();
-						if (c == '$') {
-							if (PeekChar () == '{') {
-								ReadChar ();
-								//constant replacement
-								while (!EndOfStream) {
-									c = ReadChar ();
-									if (c == '}')
-										break;
-									constantId.Append (c);
+						while (!EndOfStream) {
+							char c = ReadChar ();
+							if (c == '$') {
+								if (PeekChar () == '{') {
+									ReadChar ();
+									//constant replacement
+									while (!EndOfStream) {
+										c = ReadChar ();
+										if (c == '}')
+											break;
+										constantId.Append (c);
+									}
+									if (constantId.Length == 0)
+										throw new ParserException (line, column, "Empty constant id in styling", resId);
+									string cst = constantId.ToString ();
+									constantId.Clear ();
+									if (!StylingConstants.ContainsKey (cst))
+										throw new ParserException (line, column, $"Constant id not found in styling ({cst})", resId);
+									token.Append (StylingConstants[cst]);
+									continue;
 								}
-								if (constantId.Length == 0)
-									throw new ParserException (line, column, "Empty constant id in styling", resId);
-								string cst = constantId.ToString ();
-								constantId.Clear ();
-								if (!StylingConstants.ContainsKey (cst))
-									throw new ParserException (line, column, $"Constant id not found in styling ({cst})", resId);
-								token.Append (StylingConstants[cst]);
-								continue;
+							} else if (c == '\"') {
+								curState = States.endOfStatement;
+								break;
 							}
-						} else if (c == '\"') {
-							curState = States.endOfStatement;
-							break;
+							token.Append (c);
 						}
-						token.Append (c);
-					}
-					break;
-				case ';':
-					if (curState != States.endOfStatement)
-						throw new ParserException (line, column, "Unexpected end of statement", resId);
-					ReadChar ();
-					if (targetsClasses.Count == 0) {
-						//only first style constants kept.
-						if (!StylingConstants.ContainsKey (currentProperty))
-							StylingConstants[currentProperty] = token.ToString ();
-						curState = States.classNames;
-					} else {
-						foreach (string tc in targetsClasses) {
-							if (!Styling.ContainsKey (tc))
-								Styling [tc] = new Style ();
-							if (!Styling[tc].ContainsKey (currentProperty)) {
-								Styling[tc][currentProperty] = token.ToString ();
-#if DESIGN_MODE
-								Styling [tc].Locations[currentProperty] = new FileLocation(resId, line, column - token.Length - 1, token.Length);
-#endif
+						break;
+					case ';':
+						if (curState != States.endOfStatement)
+							throw new ParserException (line, column, "Unexpected end of statement", resId);
+						ReadChar ();
+						if (targetsClasses.Count == 0) {
+							//only first style constants kept.
+							if (!StylingConstants.ContainsKey (currentProperty))
+								StylingConstants[currentProperty] = token.ToString ();
+							curState = States.classNames;
+						} else {
+							foreach (string tc in targetsClasses) {
+								if (!Styling.ContainsKey (tc))
+									Styling [tc] = new Style ();
+								if (!Styling[tc].ContainsKey (currentProperty)) {
+									Styling[tc][currentProperty] = token.ToString ();
+	#if DESIGN_MODE
+									Styling [tc].Locations[currentProperty] = new FileLocation(resId, line, column - token.Length - 1, token.Length);
+	#endif
+								}
 							}
+							curState = States.members;
 						}
-						curState = States.members;
-					}
-					token.Clear ();
-					currentProperty = null;
-					break;
-				default:
-					if (curState == States.value)
-						throw new ParserException (line, column, "expecting value enclosed in '\"'", resId);
-					if (curState == States.endOfStatement)
-						throw new ParserException (line, column, "expecting end of statement", resId);
+						token.Clear ();
+						currentProperty = null;
+						break;
+					default:
+						if (curState == States.value)
+							throw new ParserException (line, column, "expecting value enclosed in '\"'", resId);
+						if (curState == States.endOfStatement)
+							throw new ParserException (line, column, "expecting end of statement", resId);
 
-					if (nextCharIsValidCharStartName) {
-						token.Append (ReadChar ());
-						while (nextCharIsValidCharName)
+						if (nextCharIsValidCharStartName) {
 							token.Append (ReadChar ());
+							while (nextCharIsValidCharName)
+								token.Append (ReadChar ());
+						}
+						break;
 					}
-					break;
-				}
 			}
 
 		}
diff --git a/Directory.Build.props b/Directory.Build.props
index a0ea5fb5..ba354726 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -15,7 +15,7 @@
 
 		<!-- Compile with logging enabled, this will slow down apps, use this only
 			 for debugging purpose-->
-		<CrowDebugLogEnabled>false</CrowDebugLogEnabled>
+		<CrowDebugLogEnabled>true</CrowDebugLogEnabled>
 
 		<!-- Collect several statistics on widgets-->
 		<CrowDebugStatsEnabled>false</CrowDebugStatsEnabled>
diff --git a/README.md b/README.md
index 28d28b50..98b4dc8a 100644
--- a/README.md
+++ b/README.md
@@ -3,10 +3,10 @@
   <a href="http://www.amitmerchant.com/electron-markdownify">
     <img src="https://github.com/jpbruyere/Crow/blob/master/Images/crow.png" alt="C.R.O.W." width="140">
   </a>
-  <br>  
+  <br>
     <br>
   C# Rapid Open Widgets
-  <br>  
+  <br>
 <p align="center">
   <a href="https://www.nuget.org/packages/Crow"><img src="https://buildstats.info/nuget/Crow"></a>
   <a href="https://travis-ci.org/jpbruyere/Crow">
@@ -20,7 +20,7 @@
   </a>
   <a href="https://gitter.im/CSharpRapidOpenWidgets?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge">
     <img src="https://badges.gitter.im/CSharpRapidOpenWidgets.svg">
-  </a>    
+  </a>
 </p>
 </h1>
 
diff --git a/Samples/HelloWorld/main.cs b/Samples/HelloWorld/main.cs
index e2be248e..dc5e2a13 100644
--- a/Samples/HelloWorld/main.cs
+++ b/Samples/HelloWorld/main.cs
@@ -5,7 +5,18 @@ using Samples;
 namespace HelloWorld
 {
 	class Program : SampleBase {
+		public CommandGroup CMDTest = new CommandGroup (
+			new ActionCommand("Action", ()=> Console.WriteLine ("Action executed"))
+		);
 		static void Main (string[] args) {
+			DbgLogger.IncludedEvents.AddRange ( new DbgEvtType[] {
+				DbgEvtType.MouseEnter,
+				DbgEvtType.MouseLeave,
+				DbgEvtType.WidgetMouseDown,
+				DbgEvtType.WidgetMouseUp,
+				DbgEvtType.WidgetMouseClick,
+				DbgEvtType.HoverWidget
+			});
 			using (Interface app = new Program ()) {
 				app.Initialized += (sender, e) => (sender as Interface).Load ("#HelloWorld.helloworld.crow").DataSource = sender;
 				app.Run ();
diff --git a/Samples/HelloWorld/ui/helloworld.crow b/Samples/HelloWorld/ui/helloworld.crow
index fe05d1e2..a9dad40c 100644
--- a/Samples/HelloWorld/ui/helloworld.crow
+++ b/Samples/HelloWorld/ui/helloworld.crow
@@ -1,2 +1,40 @@
 <?xml version="1.0"?>
-<Label Text="Hello World"/>
\ No newline at end of file
+<VerticalStack Margin="50" Spacing="20">
+	<HorizontalStack Height="Fit">
+		<Label Text="Hover:" Width="50" Foreground="Grey"/>
+		<Label Text="{HoverWidget}" Font="mono, 8"/>
+	</HorizontalStack>
+	<HorizontalStack Height="Fit">
+		<Label Text="Focus:" Width="50" Foreground="Grey"/>
+		<Label Text="{FocusedWidget}" Font="mono, 8"/>
+	</HorizontalStack>
+	<HorizontalStack Height="Fit">
+		<Label Text="Active:" Width="50" Foreground="Grey"/>
+		<Label Text="{ActiveWidget}" Font="mono, 8"/>
+	</HorizontalStack>
+	<Border Height="Fit" Margin="2" Background="Blue" ContextCommands="{CMDTest}" Focusable="true"
+			MouseEnter="{Background=Red}"
+			MouseLeave="{Background=Blue}">
+		<Label Margin="5" Text="Hello World" />
+	</Border>
+	<Border Height="Fit" Margin="2" Background="Blue" ContextCommands="{CMDTest}" Focusable="true"
+			MouseEnter="{Background=Red}"
+			MouseLeave="{Background=Blue}">
+		<Label Margin="5" Text="Hello World" />
+	</Border>
+	<Border Height="Fit" Margin="2" Background="Blue" ContextCommands="{CMDTest}" Focusable="true"
+			MouseEnter="{Background=Red}"
+			MouseLeave="{Background=Blue}">
+		<Label Margin="5" Text="Hello World" />
+	</Border>
+	<Border Height="Fit" Margin="2" Background="Blue" ContextCommands="{CMDTest}" Focusable="true"
+			MouseEnter="{Background=Red}"
+			MouseLeave="{Background=Blue}">
+		<Label Margin="5" Text="Hello World" />
+	</Border>
+	<Border Height="Fit" Margin="2" Background="Blue" ContextCommands="{CMDTest}" Focusable="true"
+			MouseEnter="{Background=Red}"
+			MouseLeave="{Background=Blue}">
+		<Label Margin="5" Text="Hello World" />
+	</Border>
+</VerticalStack>
diff --git a/Samples/ShowCase/ShowCase.cs b/Samples/ShowCase/ShowCase.cs
index cb094e4a..37582cfe 100644
--- a/Samples/ShowCase/ShowCase.cs
+++ b/Samples/ShowCase/ShowCase.cs
@@ -19,6 +19,13 @@ namespace ShowCase
 {
 	class Showcase : SampleBaseForEditor
 	{
+		DbgEvtType[] logEvts = {
+			DbgEvtType.MouseEnter,
+			DbgEvtType.MouseLeave,
+			DbgEvtType.WidgetMouseDown,
+			DbgEvtType.WidgetMouseUp,
+			DbgEvtType.WidgetMouseClick,
+		};
 		static void Main ()
 		{
 			initDebugLog ();
@@ -116,15 +123,13 @@ namespace ShowCase
                 return true;
             case Key.F6:
 				if (DebugLogRecording) {
-					DbgLogger.IncludeEvents = DbgEvtType.None;
-					DbgLogger.DiscardEvents = DbgEvtType.All;
+					DbgLogger.IncludedEvents.Clear();
 					if (DebugLogToFile && !string.IsNullOrEmpty(DebugLogFilePath))
 	                	DbgLogger.Save (this, DebugLogFilePath);
 					DebugLogRecording = false;
  				} else {
 					DbgLogger.Reset ();
-					DbgLogger.IncludeEvents = RecordedEvents;
-					DbgLogger.DiscardEvents = DiscardedEvents;
+					DbgLogger.IncludedEvents = new List<DbgEvtType> (logEvts);
 					DebugLogRecording = true;
 				}
                 return true;
diff --git a/Samples/ShowCase/ui/Button.template b/Samples/ShowCase/ui/Button.template
index c7e2fa06..9ef1001d 100644
--- a/Samples/ShowCase/ui/Button.template
+++ b/Samples/ShowCase/ui/Button.template
@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<Border Background="{./Background}" MinimumSize="50,20" Name="Content"
+<Border Background="{./Background}" MinimumSize="50,20" Name="Content" Width="Stretched"
 							Foreground="Transparent" CornerRadius="{../CornerRadius}" BorderWidth="1"
 							MouseEnter="{Foreground=vgradient|0:White|0.2:Grey|0.9:Grey|1:Black};{caption.Foreground=White}"
 							MouseLeave="{Foreground=Transparent};{caption.Foreground=LightGrey}"
diff --git a/Samples/ShowCase/ui/showcase.crow b/Samples/ShowCase/ui/showcase.crow
index c64fa740..23368ced 100644
--- a/Samples/ShowCase/ui/showcase.crow
+++ b/Samples/ShowCase/ui/showcase.crow
@@ -25,7 +25,7 @@
 								<ListItem ContextCommands="{GetCommands}"
 										Selected="{/exp.Background=${ControlHighlight}}"
 										Unselected="{/exp.Background=Transparent}">
-									<Expandable Name="exp" Caption="{Name}" MouseDoubleClick="/onClickForExpand" BubbleMouseEvent="MouseWheel|Keyboard|ButtonDown">
+									<Expandable Name="exp" Caption="{Name}" MouseDoubleClick="/onClickForExpand" BubbleEvents="MouseWheel|Keyboard|MouseClick|ButtonDown">
 										<Template>
 											<VerticalStack>
 												<Border CornerRadius="2" Margin="0" Height="Fit" MouseDoubleClick="./onClickForExpand"
@@ -44,7 +44,7 @@
 														<Label Text="{./Caption}"/>
 													</HorizontalStack>
 												</Border>
-												<Container Name="Content" Visible="false"/>
+												<Container Name="Content" Visible="false" BubbleEvents="MouseWheel|Keyboard"/>
 											</VerticalStack>
 										</Template>
 										<HorizontalStack Height="Fit">
diff --git a/Samples/common/src/Editor.cs b/Samples/common/src/Editor.cs
index e56914f8..0c702745 100644
--- a/Samples/common/src/Editor.cs
+++ b/Samples/common/src/Editor.cs
@@ -52,13 +52,13 @@ namespace Crow
 
 
 		IEnumerable<MemberInfo> getAllCrowTypeMembers (string crowTypeName) {
-			Type crowType = IML.Instantiator.GetWidgetTypeFromName (crowTypeName);
+			Type crowType = IFace.GetWidgetTypeFromName (crowTypeName);
 			return crowType.GetMembers (BindingFlags.Public | BindingFlags.Instance).
 				Where (m=>((m is PropertyInfo pi && pi.CanWrite) || (m is EventInfo)) &&
 						m.GetCustomAttribute<XmlIgnoreAttribute>() == null);
 		}
 		MemberInfo getCrowTypeMember (string crowTypeName, string memberName) {
-			Type crowType = IML.Instantiator.GetWidgetTypeFromName (crowTypeName);
+			Type crowType = IFace.GetWidgetTypeFromName (crowTypeName);
 			return crowType.GetMember (memberName, BindingFlags.Public | BindingFlags.Instance).FirstOrDefault ();
 		}
 
diff --git a/Samples/common/src/SampleBase.cs b/Samples/common/src/SampleBase.cs
index b44bb8f5..3e0ef714 100644
--- a/Samples/common/src/SampleBase.cs
+++ b/Samples/common/src/SampleBase.cs
@@ -94,6 +94,17 @@ namespace Samples
 				new ActionCommand("Action A", () => MessageBox.ShowModal(this, MessageBox.Type.Information, "context menu A clicked"))
 			);
 		}
+		DeviceEventType deviceEventTypeEnum;
+		public DeviceEventType DeviceEventTypeEnum {
+			get => deviceEventTypeEnum;
+			set {
+				if (deviceEventTypeEnum == value)
+					return;
+				deviceEventTypeEnum = value;
+				NotifyValueChanged ("DeviceEventTypeEnum", deviceEventTypeEnum);
+			}
+
+		}
 		public int intValue = 500;
 		VerticalAlignment currentVAlign;
 
diff --git a/Samples/common/src/SampleBaseForEditor.cs b/Samples/common/src/SampleBaseForEditor.cs
index e1cadc0a..a63ba54e 100644
--- a/Samples/common/src/SampleBaseForEditor.cs
+++ b/Samples/common/src/SampleBaseForEditor.cs
@@ -67,7 +67,7 @@ namespace Samples
 		}
 		public bool DebugLoggingEnabled => DbgLogger.IsEnabled;
 
-		public DbgEvtType RecordedEvents {
+		/*public DbgEvtType RecordedEvents {
 			get => Configuration.Global.Get<DbgEvtType> (nameof (RecordedEvents));
 			set {
 				if (RecordedEvents == value)
@@ -88,7 +88,7 @@ namespace Samples
 					DbgLogger.DiscardEvents = DiscardedEvents;
 				NotifyValueChanged(DiscardedEvents);
 			}
-		}
+		}*/
 		public bool DebugLogRecording {
 			get => debugLogRecording;
 			set {
@@ -119,9 +119,6 @@ namespace Samples
 		}
 
 		protected static void initDebugLog () {
-			DbgLogger.IncludeEvents = DbgEvtType.None;
-			DbgLogger.DiscardEvents = DbgEvtType.All;
-			//DbgLogger.DiscardEvents = DbgEvtType.All;
 			DbgLogger.ConsoleOutput = !Configuration.Global.Get<bool> (nameof (DebugLogToFile));
 		}
 
diff --git a/Samples/common/ui/Interfaces/Experimental/buttonSizing.crow b/Samples/common/ui/Interfaces/Experimental/buttonSizing.crow
new file mode 100644
index 00000000..04139b1b
--- /dev/null
+++ b/Samples/common/ui/Interfaces/Experimental/buttonSizing.crow
@@ -0,0 +1,9 @@
+<VerticalStack Fit="true" Background="Onyx" Margin="0">
+	<Button Caption='Ok' Background='MediumSeaGreen' Width="Stretched" MouseClick="{Background=Red}">
+		<Template>
+			<Border Style="ButtonBorder" Background="{./Background}" Name="Content" CornerRadius="{../CornerRadius}" Width="Stretched">
+				<Label Font="{./Font}" Name="caption" Margin="${ButtonCaptionMargin}" Foreground="{./Foreground}" Text="{./Caption}"/>
+			</Border>
+		</Template>
+	</Button>
+</VerticalStack>
\ No newline at end of file
diff --git a/Samples/common/ui/Interfaces/Experimental/enumSelector2.crow b/Samples/common/ui/Interfaces/Experimental/enumSelector2.crow
new file mode 100644
index 00000000..adaf0870
--- /dev/null
+++ b/Samples/common/ui/Interfaces/Experimental/enumSelector2.crow
@@ -0,0 +1,18 @@
+<VerticalStack>
+	<Label Text="{DeviceEventTypeEnum}"/>
+	<EnumSelector Caption="Device Events:" EnumValue="{²DeviceEventTypeEnum}" ItemStyle="CheckBox3" Width="Fit"  Background="Jet">
+		<Template>
+			<Border Style="ControlBorder" Background="{./Background}" CornerRadius="{./CornerRadius}">
+				<HorizontalStack>
+					<Label Text="{./Caption}"/>
+					<Popper Caption="{./EnumValue}" PopDirection="BottomLeft" >
+						<Template>
+							<Label Style="ControlCaption" Text="{./Caption}" Foreground="{./Foreground}" MinimumSize="80,1" TextAlignment="Center"/>
+						</Template>
+						<VerticalStack Fit="true" Name="Content" Background="Onyx" Width="{../PopWidth}" Margin="5"/>
+					</Popper>
+				</HorizontalStack>
+			</Border>
+		</Template>
+	</EnumSelector>
+</VerticalStack>
diff --git a/Samples/common/ui/Interfaces/Experimental/fileDialog.crow b/Samples/common/ui/Interfaces/Experimental/fileDialog.crow
new file mode 100644
index 00000000..90f9c70c
--- /dev/null
+++ b/Samples/common/ui/Interfaces/Experimental/fileDialog.crow
@@ -0,0 +1,17 @@
+<VerticalStack> 
+	<HorizontalStack Height="Fit">
+		<Label Text="Hover:" Width="50" Foreground="Grey"/>
+		<Label Text="{HoverWidget}" Font="mono, 8"/>
+	</HorizontalStack>
+	<HorizontalStack Height="Fit">
+		<Label Text="Focus:" Width="50" Foreground="Grey"/>
+		<Label Text="{FocusedWidget}" Font="mono, 8"/>
+	</HorizontalStack>
+	<HorizontalStack Height="Fit">
+		<Label Text="Active:" Width="50" Foreground="Grey"/>
+		<Label Text="{ActiveWidget}" Font="mono, 8"/>
+	</HorizontalStack>
+	<Container>
+	<FileDialog Focusable="true" Resizable="true"/>
+	</Container>
+</VerticalStack>
\ No newline at end of file