private static SelectionHelperBehavior _getBehavior(FasterMultiSelectListBox obj)
{
var res = (SelectionHelperBehavior)obj.GetValue(_behaviorProperty);
if (res == null)
{
res = new SelectionHelperBehavior(obj);
_setBehavior(obj, res);
var b1 = new Binding()
{
Path = new PropertyPath(ItemsControl.ItemsSourceProperty),
Mode = BindingMode.OneWay,
Source = obj
};
obj.SetBinding(_itemsSourceProperty, b1);
var b2 = new Binding()
{
Path = new PropertyPath(Selector.SelectedValuePathProperty),
Mode = BindingMode.OneWay,
Source = obj
};
obj.SetBinding(_selectedValuePathProperty, b2);
res.SetOnCleanup(() =>
{
obj.ClearValue(_itemsSourceProperty);
obj.ClearValue(_selectedValuePathProperty);
obj.ClearValue(_behaviorProperty);
});
}
return(res);
}
private static void _setBehavior(FasterMultiSelectListBox obj, SelectionHelperBehavior value)
{
obj.SetValue(_behaviorProperty, value);
}