private TreeNodeViewModel PrevVisibleSibling()
{
var _parent = this.Parent;
if (_parent != null)
{
TreeNodeViewModel result = null;
for (int i = 0; i < _parent.Items.Count && i < this.Index; i++)
{
var current = _parent.Items[i];
if (current.IsVisible)
{
result = current;
}
}
if (result != null)
{
return(result);
}
else
{
return(this.Parent.PrevVisibleSibling());
}
}
else
{
var _rootParent = GetRootParent();
if (_rootParent != null)
{
for (int i = 0; i < _rootParent.Items.Count && i < this.Index; i++)
{
var current = _rootParent.Items[i];
if (current.IsVisible)
{
return(current);
}
}
return(null);
}
else
{
return(null);
}
}
}
private TreeNodeViewModel LastVisibleChild()
{
TreeNodeViewModel result = null;
for (int i = 0; i < this.Items.Count; i++)
{
var current = this.Items[i];
if (current.IsVisible)
{
result = current;
}
else
{
this.Items[i].NextVisibleChild();
}
}
return(result);
}
public TreeNodeViewModel Add(TreeNodeViewModel node)
{
return(Add(node.Name, node.Text, node.ImageIndex));
}
public TreeNodeViewModel Add(TreeNodeViewModel node)
{
return(Add(node.Name, node.Text));
}