public Option <IEnumerable <ModelEntity> > Select(PackageTree entities)
{
entityTree.Nodes.Clear();
entityTree.Nodes.Add(CreateNode(entities));
var res = ShowDialog();
if (res == System.Windows.Forms.DialogResult.OK)
{
return(Options.Some(SelectedEntities(entityTree.Nodes.Cast <TreeNode>())));
}
else
{
return(Options.None <IEnumerable <ModelEntity> >());
}
}
private TreeNode CreateNode(PackageTree entityTree)
{
var node = new TreeNode(
entityTree.Entity.ToString(),
entityTree.Children.Select(CreateNode).ToArray());
if (entityTree.Selectable)
{
node.ImageIndex = 0;
node.SelectedImageIndex = 0;
}
else
{
node.ForeColor = SystemColors.GrayText;
node.ImageIndex = 2;
node.SelectedImageIndex = 2;
}
node.Tag = entityTree;
node.Expand();
return(node);
}
