protected override MultiSelectionVM <TItemSource, TItemVM> ProvideValue(IBehaviorContext context)
{
TSourceObject sourceObject = this.GetValueNext <TSourceObject>(context);
var vm = new MultiSelectionWithSourceVM <TSourceObject, TItemSource, TItemVM>(
_descriptor,
context.ServiceLocator
);
vm.InitializeFrom(sourceObject);
return(vm);
}
private static void HandleIsSelectedChanged(
MultiSelectionWithSourceVM <TSourceObject,
TItemSource, TItemVM> vm, ChangeArgs args
)
{
var item = (SelectableItemVM <TItemSource, TItemVM>)args.ChangedVM;
if (item.IsSelected)
{
if (!vm.SelectedItems.Contains(item))
{
vm.SelectedItems.Add(args.ChangedVM);
}
}
else
{
vm.SelectedItems.Remove(args.ChangedVM);
}
}
