private static bool HasCircularParent(this IDomainHierarchy parent, IDomainHierarchy originaltarget)
{
var domain = parent as IDomainObject;
if (domain.IsNullOrEmpty()) return false;
return parent.Equals(originaltarget) || HasCircularParent(parent.GetParent(), originaltarget);
}
public void Bind(ICollection<IDomainHierarchy> items, IDomainHierarchy target, bool addEmpty = false)
{
if (items == null) throw new ArgumentNullException("items");
_type = items.First().GetType().Name;
_button.Text = target.IsNullOrEmpty() ? string.Format(_defaultText, _type) : target.Title;
_button.CommandArgument = target.IsNullOrEmpty() ? string.Empty : target.Id.ToString();
AddEmpty(_tree, target, addEmpty);
using (new ObjectScope<IDomainHierarchy>(items.ToList()))
{
var roots = items.Where(i => IsRoot(i, items));
foreach (var root in roots) Bind(_tree, root, target);
}
}
private void SetImage(TreeNode node, IDomainHierarchy item, bool usedefault = false)
{
if (!AutoImage) return;
var imageprovider = item as IImageProvider;
node.ImageUrl = (imageprovider == null) ? string.Format(_imageFormat, _type) : usedefault ? imageprovider.DefaultImageUrl : imageprovider.ImageUrl;
}
private void Bind(TreeNode parent, IDomainHierarchy item, IDomainHierarchy target)
{
var node = new TreeNode {Text = item.Title, Value = item.Id.ToString(), Selected = item.Equals(target)};
SetImage(node, item);
parent.ChildNodes.Add(node);
if (node.Selected && ExpandToSelectedNode)
{
ExpandUp(node);
}
foreach (var child in item.GetChildren()) Bind(node, child as IDomainHierarchy, target);
}
private void Bind(TreeView tree, IDomainHierarchy root, IDomainHierarchy target)
{
var node = new TreeNode {Text = root.Title, Value = root.Id.ToString(), Selected = root.Equals(target)};
SetImage(node, root);
tree.Nodes.Add(node);
foreach (var child in root.GetChildren()) Bind(node, child as IDomainHierarchy, target);
}
private void AddEmpty(TreeView tree, IDomainHierarchy target, bool addEmpty)
{
if (!addEmpty) return;
var node = new TreeNode {Text = string.Format(_emptyText, _type), Value = IdManager.Empty().ToString(), Selected = false};
SetImage(node, target, true);
tree.Nodes.Add(node);
}
private static bool IsRoot(IDomainHierarchy target, ICollection<IDomainHierarchy> items)
{
if (target.IsNullOrEmpty()) return false;
var parent = target.GetParent();
if (parent.IsNullOrEmpty()) return true;
return !items.Contains(parent);
}
