private void GenerateTree(IDialogNodeElement elemenetToExpandOn = null)
{
if (elemenetToExpandOn == null)
{
var selectedItem = treeDialog.SelectedNode;
if (selectedItem == null)
elemenetToExpandOn = _rootDialogNode;
else
elemenetToExpandOn = (IDialogNodeElement)selectedItem.Tag;
}
treeDialog.Nodes.Clear();
var root = CreateTreeNodeFromDialogNode(_rootDialogNode);
treeDialog.Nodes.Add(root);
// Using a recursive approach, we'll generate our tree in the best way we can
RecurisveAdd(root, _rootDialogNode);
// Perform a deep search for the node
var select = FindTreeNodeWithElement(elemenetToExpandOn, root);
// Expand all and select it
if (select != null)
{
treeDialog.SelectedNode = select;
select.ExpandAll();
}
}
private TreeNode FindTreeNodeWithElement(IDialogNodeElement elementToFind, TreeNode currentNode)
{
if (currentNode.Tag == elementToFind)
return currentNode;
var dialogNode = currentNode.Tag as DialogNode;
for (int index = 0; index < dialogNode.Links.Count; index++)
{
var link = dialogNode.Links[index];
if (link == elementToFind)
return currentNode.Nodes[index].Nodes[0];
TreeNode result;
if (link.NextNode != null)
{
result = FindTreeNodeWithElement(elementToFind, currentNode.Nodes[index].Nodes[0]);
if (result != null)
return result;
}
}
return null;
}
