- aggiunta selezione multipla su MTable

- aggiunto bottone link in MTable - aggiunto sposta con salto in MTable
2025-02-06 10:38:07 +01:00
parent 5cddbffb45
commit bd3cdf7ea0
4 changed files with 288 additions and 24 deletions
@@ -0,0 +1,80 @@
+Imports System.Windows.Controls.Primitives
+Imports System.ComponentModel
+
+
+Public Class MultiSelectorBehaviours
+
+   Public Shared ReadOnly SynchronizedSelectedItemsProperty As DependencyProperty = DependencyProperty.RegisterAttached("SynchronizedSelectedItems", GetType(IList), GetType(MultiSelectorBehaviours), New PropertyMetadata(Nothing, AddressOf OnSynchronizedSelectedItemsChanged))
+   Public Shared ReadOnly SynchronizationManagerProperty As DependencyProperty = DependencyProperty.RegisterAttached("SynchronizationManager", GetType(SynchronizationManager), GetType(MultiSelectorBehaviours), New PropertyMetadata(Nothing))
+
+
+   Public Shared Function GetSynchronizedSelectedItems(ByVal dependencyObject As DependencyObject) As IList
+      Return CType(dependencyObject.GetValue(SynchronizedSelectedItemsProperty), IList)
+   End Function
+
+   Public Shared Sub SetSynchronizedSelectedItems(ByVal dependencyObject As DependencyObject, ByVal value As IList)
+      dependencyObject.SetValue(SynchronizedSelectedItemsProperty, value)
+   End Sub
+
+   Private Shared Function GetSynchronizationManager(ByVal dependencyObject As DependencyObject) As SynchronizationManager
+      Return CType(dependencyObject.GetValue(SynchronizationManagerProperty), SynchronizationManager)
+   End Function
+
+   Private Shared Sub SetSynchronizationManager(ByVal dependencyObject As DependencyObject, ByVal value As SynchronizationManager)
+      dependencyObject.SetValue(SynchronizationManagerProperty, value)
+   End Sub
+
+   Private Shared Sub OnSynchronizedSelectedItemsChanged(ByVal dependencyObject As DependencyObject, ByVal e As DependencyPropertyChangedEventArgs)
+      If e.OldValue IsNot Nothing Then
+         Dim synchronizer As SynchronizationManager = GetSynchronizationManager(dependencyObject)
+         synchronizer.StopSynchronizing()
+         SetSynchronizationManager(dependencyObject, Nothing)
+      End If
+
+      Dim list As IList = TryCast(e.NewValue, IList)
+      Dim selector As Selector = TryCast(dependencyObject, Selector)
+
+      If list IsNot Nothing AndAlso selector IsNot Nothing Then
+         Dim synchronizer As SynchronizationManager = GetSynchronizationManager(dependencyObject)
+
+         If synchronizer Is Nothing Then
+            synchronizer = New SynchronizationManager(selector)
+            SetSynchronizationManager(dependencyObject, synchronizer)
+         End If
+
+         synchronizer.StartSynchronizingList()
+      End If
+   End Sub
+
+   Private Class SynchronizationManager
+      Private ReadOnly _multiSelector As Selector
+      Private _synchronizer As TwoListSynchronizer
+
+      Friend Sub New(ByVal selector As Selector)
+         _multiSelector = selector
+      End Sub
+
+      Public Sub StartSynchronizingList()
+         Dim list As IList = GetSynchronizedSelectedItems(_multiSelector)
+
+         If list IsNot Nothing Then
+            _synchronizer = New TwoListSynchronizer(GetSelectedItemsCollection(_multiSelector), list)
+            _synchronizer.StartSynchronizing()
+         End If
+      End Sub
+
+      Public Sub StopSynchronizing()
+         _synchronizer.StopSynchronizing()
+      End Sub
+
+      Public Shared Function GetSelectedItemsCollection(ByVal selector As Selector) As IList
+         If TypeOf selector Is MultiSelector Then
+            Return (TryCast(selector, MultiSelector)).SelectedItems
+         ElseIf TypeOf selector Is ListBox Then
+            Return (TryCast(selector, ListBox)).SelectedItems
+         Else
+            Throw New InvalidOperationException("Target object has no SelectedItems property to bind.")
+         End If
+      End Function
+   End Class
+End Class