private void InsertChildren(HtmlGenericControl container, Item item, int level)
{
++level;
IEnumerable <Node> childItems = _origTree[item.Id];
HtmlGenericControl newUl = null;
if (childItems.Count() > 0)
{
container.Attributes.Add("class", "hiddenUl");
container.Controls.AddAt(0, TreeStructureCreator.CreateExpander(item.Id, item.Term, item.ParentId, item.Attributes, "divinsideli", "expand", "spaninsidediv"));
newUl = new HtmlGenericControl("ul");
}
else if (childItems.Count() == 0)
{
container = TreeStructureCreator.CreateLiContainer(container, item.Id, item.Term, item.ParentId, item.Attributes, "spaninsidediv solo");
return;
}
foreach (Node tItem in childItems)
{
Item itemToAdd = new Item {
Id = tItem.Id, Term = tItem.Term, ParentId = tItem.ParentId, Attributes = tItem.Attributes, Level = level
};
HtmlGenericControl newLi = TreeStructureCreator.CreateLi(string.Empty, string.Empty, string.Empty);
newUl.Controls.Add(newLi);
this.InsertChildren(newLi, itemToAdd, level);
}
container.Controls.Add(newUl);
}
public string Build(List <Node> originalTree)
{
if (originalTree == null)
{
throw new Exception("List is empty. Can't build a tree.");
}
else
{
_origTree = originalTree.ToLookup(x => x.ParentId);
}
IList <Node> treeWithoutParents = originalTree.Where(x => String.IsNullOrEmpty(x.ParentId)).OrderBy(x => x.Term).ToList();
//Base root.
HtmlGenericControl ulContainer = TreeStructureCreator.CreateUl(_treeViewSettings);
#if DEBUG
DateTime start = DateTime.Now;
#endif
//Leafs
foreach (Node item in treeWithoutParents)
{
Item newItem = new Item {
Id = item.Id, Term = item.Term, ParentId = item.ParentId, Level = 0, Attributes = item.Attributes
};
HtmlGenericControl newLi = TreeStructureCreator.CreateLi(string.Empty, string.Empty, string.Empty);
ulContainer.Controls.Add(newLi);
this.InsertChildren(newLi, newItem, 0);
}
//Tree
HtmlGenericControl tree = TreeStructureCreator.CreateTree(_treeViewSettings, ulContainer, originalTree);
StringBuilder generatedHtml = new StringBuilder();
HtmlTextWriter htw = new HtmlTextWriter(new StringWriter(generatedHtml));
tree.RenderControl(htw);
string output = generatedHtml.ToString();
#if DEBUG
DateTime end = DateTime.Now;
output = output + "<br/><span>Loading time is " + (end - start).TotalMilliseconds + "</span></br/>";
#endif
return(output);
}
