private void FillListTree()
{
List <long> listExpandedDefNums = new List <long>();
if (_userOdCurPref != null) //if this is the fill on load, the node count will be 0, expanded node list from pref
{
listExpandedDefNums = _userOdCurPref.ValueString.Split(',').Where(x => x != "" && x != "0").Select(x => PIn.Long(x)).ToList();
}
//clear current tree contents
treeListMain.BeginUpdate();
treeListMain.SelectedNode = null;
treeListMain.Nodes.Clear();
//add categories with all auto notes that are assigned to that category
List <long> listCatDefNums = _listAutoNoteCatDefs.Select(x => x.DefNum).ToList();
//call recursive function GetNodeAndChildren for any root cat (where def.ItemValue is blank) and any def with invalid parent def num (ItemValue)
_listAutoNoteCatDefs.FindAll(x => string.IsNullOrWhiteSpace(x.ItemValue) || !listCatDefNums.Contains(PIn.Long(x.ItemValue)))
.ForEach(x => treeListMain.Nodes.Add(CreateNodeAndChildren(x))); //child cats and categorized auto notes added in recursive function
//add any uncategorized auto notes after the categorized ones and only for the root nodes
AutoNotes.GetWhere(x => x.Category == 0 || !listCatDefNums.Contains(x.Category))
.ForEach(x => treeListMain.Nodes.Add(new TreeNode(x.AutoNoteName, 1, 1)
{
Tag = x
}));
if (listExpandedDefNums.Count > 0)
{
treeListMain.Nodes.OfType <TreeNode>().SelectMany(x => GetNodeAndChildren(x))
.Where(x => x.Tag is Def && listExpandedDefNums.Contains(((Def)x.Tag).DefNum)).ToList()
.ForEach(x => x.Expand());
}
treeListMain.EndUpdate();
}
///<summary>Recursive function, returns a tree node with all descendants, including all auto note children for this def cat and all children for
///any cat within this this cat. Auto Notes that are at the 'root' level (considered uncategorized) have to be added separately after filling the
///rest of the tree with this function and will be at the bottom of the root node list.</summary>
private TreeNode CreateNodeAndChildren(Def defCur)
{
List <TreeNode> listChildNodes = _listAutoNoteCatDefs
.Where(x => !string.IsNullOrWhiteSpace(x.ItemValue) && x.ItemValue == defCur.DefNum.ToString())
.Select(CreateNodeAndChildren).ToList();
listChildNodes.AddRange(AutoNotes.GetWhere(x => x.Category == defCur.DefNum)
.Select(x => new TreeNode(x.AutoNoteName, 1, 1)
{
Tag = x
}));
return(new TreeNode(defCur.ItemName, 0, 0, listChildNodes.OrderBy(x => x.Tag is AutoNote).ThenBy(x => x.Name).ToArray())
{
Tag = defCur
});
}