Source/Editors/VisualListInput.cs

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#if FRAMEWORK20
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using DevComponents.DotNetBar;

namespace DevComponents.Editors
{
    public class VisualListInput : VisualInputBase
    {
        #region Private Variables
        #endregion

        #region Events
        #endregion

        #region Constructor
        #endregion

        #region Internal Implementation
        protected override bool OnCmdKey(ref System.Windows.Forms.Message msg, System.Windows.Forms.Keys keyData)
        {
            if (keyData == System.Windows.Forms.Keys.Up)
            {
                SelectPrevious();
                return true;
            }
            else if (keyData == System.Windows.Forms.Keys.Down)
            {
                SelectNext();
                return true;
            }
            return base.OnCmdKey(ref msg, keyData);
        }

        protected override void OnMouseWheel(System.Windows.Forms.MouseEventArgs e)
        {
            if (!this.IsReadOnly)
            {
                if (e.Delta > 0)
                {
                    SelectNext();
                }
                else
                {
                    SelectPrevious();
                }
            }

            base.OnMouseWheel(e);
        }

        protected override bool ValidateNewInputStack(string s)
        {
            if (s.Length == 0 && !_AllowEmptyState)
                return false;
            return base.ValidateNewInputStack(s);
        }