public override bool CanExecute(object parameter)
{
var context = parameter as LayoutTreeViewContext;
if (context == null)
{
return(false);
}
if (!context.TreeViewItems.All(i => i is PlaceHolderTreeViewItem))
{
return(false);
}
if (context.TreeViewItems.Count() != 1)
{
return(false);
}
Context = context;
return(true);
}
public override void ContextMenuClosed()
{
Context = null;
}
