Little Registry Cleaner/Common Tools/TreeViewAdv/Tree/Input/NormalInputState.cs

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using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;

namespace Common_Tools.TreeViewAdv.Tree
{
	internal class NormalInputState : InputState
	{
		private bool _mouseDownFlag = false;

		public NormalInputState(TreeViewAdv tree) : base(tree)
		{
		}

		public override void KeyDown(KeyEventArgs args)
		{
			if (Tree.CurrentNode == null && Tree.Root.Nodes.Count > 0)
				Tree.CurrentNode = Tree.Root.Nodes[0];

			if (Tree.CurrentNode != null)
			{
				switch (args.KeyCode)
				{
					case Keys.Right:
						if (!Tree.CurrentNode.IsExpanded)
							Tree.CurrentNode.IsExpanded = true;
						else if (Tree.CurrentNode.Nodes.Count > 0)
							Tree.SelectedNode = Tree.CurrentNode.Nodes[0];
						args.Handled = true;
						break;
					case Keys.Left:
						if (Tree.CurrentNode.IsExpanded)
							Tree.CurrentNode.IsExpanded = false;
						else if (Tree.CurrentNode.Parent != Tree.Root)
							Tree.SelectedNode = Tree.CurrentNode.Parent;
						args.Handled = true;
						break;
					case Keys.Down:
						NavigateForward(1);
						args.Handled = true;
						break;
					case Keys.Up:
						NavigateBackward(1);
						args.Handled = true;
						break;
					case Keys.PageDown:
						NavigateForward(Math.Max(1, Tree.CurrentPageSize - 1));
						args.Handled = true;
						break;
					case Keys.PageUp:
						NavigateBackward(Math.Max(1, Tree.CurrentPageSize - 1));
						args.Handled = true;
						break;
					case Keys.Home:
						if (Tree.RowMap.Count > 0)
							FocusRow(Tree.RowMap[0]);
						args.Handled = true;
						break;
					case Keys.End:
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