/// <summary>
/// Set the STNode node that needs to be displayed
/// </summary>
/// <param name="node">target node</param>
public void SetNode(STNode node)
{
if (node == this._STNode)
{
return;
}
m_nInfoOffsetY = m_nPropertyOffsetY = 0;
m_nInfoVHeight = m_nPropertyVHeight = 0;
m_rect_link = m_rect_help = Rectangle.Empty;
m_str_desc = m_str_err = null;
this._STNode = node;
if (node != null)
{
m_type = node.GetType();
m_lst_item = this.GetProperties(node);
m_node_attribute = this.GetNodeAttribute(node);
this.SetItemRectangle();
m_b_current_draw_info = m_lst_item.Count == 0 || this._InfoFirstOnDraw;
if (this._AutoColor)
{
this._ItemSelectedColor = this._STNode.TitleColor;
}
}
else
{
m_type = null;
m_lst_item.Clear();
m_node_attribute = null;
}
this.Invalidate();
}
private STNodeAttribute GetNodeAttribute(STNode node)
{
if (node == null)
{
return(null);
}
Type t = node.GetType();
foreach (var v in t.GetCustomAttributes(true))
{
if (!(v is STNodeAttribute))
{
continue;
}
return((STNodeAttribute)v);
}
return(null);
}
private List <STNodePropertyDescriptor> GetProperties(STNode node)
{
List <STNodePropertyDescriptor> lst = new List <STNodePropertyDescriptor>();
if (node == null)
{
return(lst);
}
Type t = node.GetType();
foreach (var p in t.GetProperties())
{
var attrs = p.GetCustomAttributes(true);
foreach (var a in attrs)
{
if (!(a is STNodePropertyAttribute))
{
continue;
}
var attr = a as STNodePropertyAttribute;
object obj = Activator.CreateInstance(attr.DescriptorType);
if (!(obj is STNodePropertyDescriptor))
{
throw new ArgumentException("[STNodePropertyAttribute.DescriptorType] parameter value must be the type of [STNodePropertyDescriptor] or its subclass");
}
var desc = (STNodePropertyDescriptor)Activator.CreateInstance(attr.DescriptorType);
desc.Node = node;
desc.Name = attr.Name;
desc.Description = attr.Description;
desc.PropertyInfo = p;
desc.Control = this;
lst.Add(desc);
}
}
return(lst);
}
