public override bool MoveToNextFlatNode()
{
if (this.node == null)
{
return(false);
}
TreeGridNode nextNode = this.node;
if (nextNode.IsExpanded && nextNode.items.Count > 0)
{
// We're on a node that is expanded. Move to its first child.
nextNode = nextNode.GetOrCreateChildNode(0);
}
else
{
while (nextNode.Parent == null || nextNode.childIndex == nextNode.Parent.items.Count - 1)
{
// Reached the end of this node. Pop up a level. If we're already at the top, we're done.
if (nextNode.Parent == null)
{
return(false);
}
nextNode = nextNode.Parent;
}
nextNode = nextNode.Parent.GetOrCreateChildNode(nextNode.childIndex + 1);
}
nextNode.AddExternalReference();
this.node.ReleaseExternalReference();
this.node = nextNode;
return(true);
}
static TreeGridNode FindLastNode(TreeGridNode node)
{
if (node.IsExpanded && node.items != null && node.items.Count > 0)
{
var lastChild = node.GetOrCreateChildNode(node.items.Count - 1);
return(FindLastNode(lastChild));
}
return(node);
}
static TreeGridNode FindLastNode(TreeGridNode node)
{
if (node.IsExpanded && node.items != null && node.items.Count > 0)
{
var lastChild = node.GetOrCreateChildNode(node.items.Count - 1);
return FindLastNode(lastChild);
}
return node;
}