diff --git a/src/Toplo-Examples/ToSandBox.class.st b/src/Toplo-Examples/ToSandBox.class.st
index 6c32cf4e..f69fa923 100644
--- a/src/Toplo-Examples/ToSandBox.class.st
+++ b/src/Toplo-Examples/ToSandBox.class.st
@@ -2603,7 +2603,7 @@ ToSandBox class >> example_ThemeSelect [
 		('Select a Toplo theme' asRopedText foreground: Color lightGray).
 	select
 		addEventHandlerOn: ToSingleSelectChangedEvent
-		do: [ :event | self inform: event selectedData asString ].
+		do: [ :event | event selectedData asString traceCr ].
 	select selecter selectIndex: 4.
 	select allowDeselection: false.
 	select openInSpace
@@ -3887,12 +3887,15 @@ ToSandBox class >> example_selectWithEditingMultiSelectionWithAllClassNames [
 					  fontSize: 24;
 					  foreground: Color lightGray;
 					  yourself)) ].
-
+	select sieve dataFilter: [ :aClass :aPattern |
+		aClass name
+			includesSubstring: aPattern asString
+			caseSensitive: false ].
 	innerWindow := ToInnerWindow new.
 	select popupWindowManager anchorRoot: innerWindow root.
 	select hMatchParent.
 	select popupListElement dataAccessor updateAllWith:
-		(Smalltalk globals allClasses collect: [ :cls | cls name ]).
+		Smalltalk globals allClasses.
 
 	innerWindow pane addChild: select.
 	innerWindow height: 800.
diff --git a/src/Toplo-Widget-List/ToSievedListElementEventHandler.class.st b/src/Toplo-Widget-List/ToSievedListElementEventHandler.class.st
index 49b89582..88c3667b 100644
--- a/src/Toplo-Widget-List/ToSievedListElementEventHandler.class.st
+++ b/src/Toplo-Widget-List/ToSievedListElementEventHandler.class.st
@@ -63,7 +63,7 @@ ToSievedListElementEventHandler >> listSelectionCommandAppliedEvent: aPreNotific
 	" the list selection change event is about to be dispatched.
 	I take care of the sieve internal selectionSet according to the list element selection model"
 
-	| listElement listSelModel touchedIndexes |
+	| listElement listSelModel |
 	listElement := aPreNotification currentTarget.
 	listSelModel := listElement selectionModel.
 	" first check if the request is for the primary selection model "
@@ -80,15 +80,12 @@ ToSievedListElementEventHandler >> listSelectionCommandAppliedEvent: aPreNotific
 	- if not empty, the selection set is computed according to the current list node list "
 	sieve pattern
 		ifEmpty: [
-			touchedIndexes := aPreNotification command indexes.
 			sieveSelectionModel copySelectionFrom: listSelModel ]
 		ifNotEmpty: [
-			touchedIndexes := OrderedCollection new.
 			aPreNotification command indexes do: [ :localIndex |
 				| originalIndex dataItem |
 				dataItem := listElement dataAccessor at: localIndex.
 				originalIndex := dataPositionIndex at: dataItem.
-				touchedIndexes add: originalIndex.
 				listSelModel
 					transferSelectionFromIndex: localIndex
 					toIndex: originalIndex
diff --git a/src/Toplo-Widget-Select/ToMultiSelectListElement.class.st b/src/Toplo-Widget-Select/ToMultiSelectListElement.class.st
index 31d01e50..e36e5a4d 100644
--- a/src/Toplo-Widget-Select/ToMultiSelectListElement.class.st
+++ b/src/Toplo-Widget-Select/ToMultiSelectListElement.class.st
@@ -6,7 +6,7 @@ Class {
 
 { #category : #'private - commands' }
 ToMultiSelectListElement >> applyDataSourceSieveCommand: aDataSourceCommand [
-	" update the selection according to the sieve selection model"
+	" update the selection and the select list according to the sieve selection model"
 
 	super applyDataSourceSieveCommand: aDataSourceCommand.
 	selectElement checkHideSelectionFromListElement.
diff --git a/src/Toplo-Widget-Select/ToSelectPopupWindowManager.class.st b/src/Toplo-Widget-Select/ToSelectPopupWindowManager.class.st
index 8d4b51de..4e4e2800 100644
--- a/src/Toplo-Widget-Select/ToSelectPopupWindowManager.class.st
+++ b/src/Toplo-Widget-Select/ToSelectPopupWindowManager.class.st
@@ -87,6 +87,13 @@ ToSelectPopupWindowManager >> minHeight: aNumber [
 	listElement minHeight: aNumber
 ]
 
+{ #category : #'mouse handlers' }
+ToSelectPopupWindowManager >> mouseDownInElementEvent: anEvent [
+
+	super mouseDownInElementEvent: anEvent.
+	element filterTextField requestFocus
+]
+
 { #category : #initialization }
 ToSelectPopupWindowManager >> newListElement [
 
diff --git a/src/Toplo-Widget-Select/ToSingleSelectChangedEvent.class.st b/src/Toplo-Widget-Select/ToSingleSelectChangedEvent.class.st
index 8117e314..a2e4ade0 100644
--- a/src/Toplo-Widget-Select/ToSingleSelectChangedEvent.class.st
+++ b/src/Toplo-Widget-Select/ToSingleSelectChangedEvent.class.st
@@ -2,8 +2,8 @@ Class {
 	#name : #ToSingleSelectChangedEvent,
 	#superclass : #BlEvent,
 	#instVars : [
-		'selectedData',
-		'selectedIndex'
+		'selectedDataArray',
+		'selectedIndexes'
 	],
 	#category : #'Toplo-Widget-Select-Single'
 }
@@ -11,23 +11,23 @@ Class {
 { #category : #accessing }
 ToSingleSelectChangedEvent >> selectedData [
 
-	^ selectedData
+	^ selectedDataArray ifNotEmpty: [ :s | s anyOne ] ifEmpty: [  ]
 ]
 
 { #category : #accessing }
-ToSingleSelectChangedEvent >> selectedData: aData [
+ToSingleSelectChangedEvent >> selectedDataArray: aDataArray [
 
-	selectedData := aData
+	selectedDataArray := aDataArray
 ]
 
 { #category : #accessing }
 ToSingleSelectChangedEvent >> selectedIndex [
 
-	^ selectedIndex
+	^ selectedIndexes ifNotEmpty: [ :s | s anyOne ] ifEmpty: [ 0 ]
 ]
 
 { #category : #accessing }
-ToSingleSelectChangedEvent >> selectedIndex: anInteger [
+ToSingleSelectChangedEvent >> selectedIndexes: anArray [
 
-	selectedIndex := anInteger
+	selectedIndexes := anArray
 ]
diff --git a/src/Toplo-Widget-Select/ToSingleSelectInnerContainerElement.class.st b/src/Toplo-Widget-Select/ToSingleSelectInnerContainerElement.class.st
index 32f0038a..25d6e4db 100644
--- a/src/Toplo-Widget-Select/ToSingleSelectInnerContainerElement.class.st
+++ b/src/Toplo-Widget-Select/ToSingleSelectInnerContainerElement.class.st
@@ -148,14 +148,14 @@ ToSingleSelectInnerContainerElement >> refreshFromPopupListSelection [
 	dataView removeChildren.
 
 	selectedIndex isZero
-		ifTrue: [  ]
 		ifFalse: [
 			dataItem := originalData at: selectedIndex.
 			dataViewBuilder cull: dataView cull: dataItem ].
 
 	changedEvent := ToSingleSelectChangedEvent new.
-	changedEvent selectedData: dataItem.
-	changedEvent selectedIndex: selectedIndex.
+	changedEvent selectedDataArray:
+		(dataItem ifNil: [ #(  ) ] ifNotNil: [ { dataItem } ]).
+	changedEvent selectedIndexes: { selectedIndex }.
 	selectElement dispatchEvent: changedEvent
 ]