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

namespace xmltv_parser
{
    public class ListViewSorter : System.Collections.IComparer
    {
        public ListViewSorter() { }
        public int Compare(object o1, object o2)
        {
            if (!(o1 is ListViewItem))
                return (0);
            if (!(o2 is ListViewItem))
                return (0);

            ListViewItem lvi1 = (ListViewItem)o2;
            string str1 = lvi1.SubItems[CurrentColumn].Text;
            ListViewItem lvi2 = (ListViewItem)o1;
            string str2 = lvi2.SubItems[CurrentColumn].Text;

            int result;
            if (lvi1.ListView.Sorting == SortOrder.Ascending)
                result = String.Compare(str1, str2);
            else
                result = String.Compare(str2, str1);

            LastColumn = CurrentColumn;

            return (result);
        }

        int _LastColumn;
        public int LastColumn
        {
            get { return _LastColumn; }
            set { _LastColumn = value; }
        }        

        int _CurrentColumn = 0;
        public int CurrentColumn
        {
            get { return _CurrentColumn; }
            set { _CurrentColumn = value; }
        }
        
    } 
}