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 *     following disclaimer. 
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using System.Collections.Generic;
using XenAdmin.Controls;
using XenAPI;
using System.Windows.Forms;

namespace XenAdmin.Commands
{
    internal class DragDropRemoveHostFromPoolCommand : DragDropCommand
    {
        public DragDropRemoveHostFromPoolCommand(IMainWindow mainWindow, VirtualTreeNode targetNode, IDataObject dragData)
            : base(mainWindow, targetNode, dragData)
        {
        }

        protected override bool CanExecuteCore()
        {
            List<Host> draggedHosts = GetDraggedItemsAsXenObjects<Host>();

            // user must drag to XenCenter Node
            if (draggedHosts.Count > 0 && TargetNode != null && TargetNode.Tag == null)
            {
                return new RemoveHostFromPoolCommand(MainWindowCommandInterface, draggedHosts).CanExecute();
            }
            return false;
        }

        protected override void ExecuteCore()
        {
            new RemoveHostFromPoolCommand(MainWindowCommandInterface, GetDraggedItemsAsXenObjects<Host>()).Execute();
        }
    }
}