Source/AdvTree/KeyNavigation.cs

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using System;
using System.Windows.Forms;
using System.Drawing;

namespace DevComponents.AdvTree
{
	/// <summary>
	/// Provides AdvTree Keyboard handling.
	/// </summary>
	internal class KeyNavigation
	{
		public static void KeyDown(AdvTree tree, KeyEventArgs e)
		{
			switch(e.KeyCode)
			{
				case Keys.Space:
					{
						SpaceKeyDown(tree, e);
						e.Handled = true;
						break;
					}
                case Keys.F2:
                    {
                        F2KeyDown(tree, e);
                        break;
                    }
			}
		}

        private static void F2KeyDown(AdvTree tree, KeyEventArgs e)
        {
            if (tree.EditSelectedCell(eTreeAction.Keyboard))
                e.Handled = true;
        }

        public static void SpaceKeyDown(AdvTree tree, KeyEventArgs e)
        {
            Node node = tree.SelectedNode;
            if (node != null && node.CheckBoxVisible && node.Enabled)
            {
                if (node.CheckBoxThreeState)
                {
                    if (node.CheckState == CheckState.Checked)
                        node.SetChecked(CheckState.Indeterminate, eTreeAction.Keyboard);
                    else if (node.CheckState == CheckState.Unchecked)
                        node.SetChecked(CheckState.Checked, eTreeAction.Keyboard);
                    else if (node.CheckState == CheckState.Indeterminate)
                        node.SetChecked(CheckState.Unchecked, eTreeAction.Keyboard);
                }
                else
                    node.SetChecked(!node.Checked, eTreeAction.Keyboard);
                e.Handled = true;
            }
        }
		
		public static void EnterKeyDown(AdvTree tree, KeyEventArgs e)
		{
            if (tree.SelectedNode != null && tree.SelectedNode.Nodes.Count > 0)
            {
                tree.SelectedNode.Toggle(eTreeAction.Keyboard);