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 * 
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 *     following disclaimer. 
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 * 
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 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
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using System.ComponentModel;

namespace XenAdmin.Controls.DataGridViewEx
{
    /// <summary>
    /// Class that performs a default sort of the CollapsingPoolHostDataGridViewRows
    /// Order being pools, hosts and if equal, use the classes comaprison method
    /// </summary>
    public sealed class CollapsingPoolHostDataGridViewRowDefaultSorter : CollapsingPoolHostDataGridViewRowSorter
    {
        public CollapsingPoolHostDataGridViewRowDefaultSorter() { }

        public CollapsingPoolHostDataGridViewRowDefaultSorter(ListSortDirection direction) : base(direction) { }

        protected override int PerformSort()
        {
            return ComparePoolsThenHosts();
        }

        private int ComparePoolsThenHosts()
        {
            if (Lhs.IsAPoolRow && Rhs.IsAHostRow)
                return -1;

            if (Lhs.IsAHostRow && Rhs.IsAPoolRow)
                return 1;

            if (Lhs.IsAPoolRow && Rhs.IsAPoolRow)
            {
                return ComparePools();
            }

            if (Lhs.IsAHostRow && Rhs.IsAHostRow)
            {
                return CompareHosts();
            }

            return 0;
        }

        private int ComparePools()
        {
            return Lhs.UnderlyingPool.CompareTo(Rhs.UnderlyingPool);
        }

        private int CompareHosts()
        {
            return Lhs.UnderlyingHost.CompareTo(Rhs.UnderlyingHost);
        }

    }
}
