Source/AdvTree/Design/NodeDesigner.cs

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using System;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Windows.Forms;
using System.Windows.Forms.Design;

namespace DevComponents.AdvTree.Design
{
	/// <summary>
	/// Represents Windows Forms designer for Node object.
	/// </summary>
	public class NodeDesigner:ComponentDesigner
	{
		/// <summary>
		/// Initializes designer with given component.
		/// </summary>
		/// <param name="component">Component to initialize designer with.</param>
		public override void Initialize(IComponent component) 
		{
			base.Initialize(component);
			if(!component.Site.DesignMode)
				return;

			ISelectionService ss =(ISelectionService)GetService(typeof(ISelectionService));
			if(ss!=null)
				ss.SelectionChanged+=new EventHandler(OnSelectionChanged);
			
			Node n=component as Node;
			if(n!=null)
				this.Visible=n.Visible;
		}
		private void OnSelectionChanged(object sender, EventArgs e) 
		{
			ISelectionService ss = (ISelectionService)sender;
            if (this.Component != null && ss.PrimarySelection != this.Component)
            {
                Node node = this.Component as Node;
                if (ss.PrimarySelection is Node)
                {
                    Node selected = ss.PrimarySelection as Node;

                    if (selected.TreeControl != node.TreeControl)
                    {
                        node.TreeControl.SelectedNode = null;
                    }
                }
                else if (node != null && node.TreeControl != null)
                    node.TreeControl.SelectedNode = null;
            }
		}

		protected override void PreFilterProperties(System.Collections.IDictionary properties)
		{
			base.PreFilterProperties(properties);
			properties["Visible"] = TypeDescriptor.CreateProperty(typeof(NodeDesigner),(PropertyDescriptor)properties["Visible"], new Attribute[]
				{
					new DefaultValueAttribute(true),
					new BrowsableAttribute(true),
					new CategoryAttribute("Layout")});