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 * 
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 *     following disclaimer. 
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 *     copyright notice, this list of conditions and the 
 *     following disclaimer in the documentation and/or other 
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 * 
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using System;
using System.Collections.Generic;
using System.Text;
using XenAPI;
using System.Collections.ObjectModel;
using XenAdmin.Core;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Shows the ExportVMDialog dialog for the selected template.
    /// </summary>
    internal class ExportTemplateCommand : Command
    {
        /// <summary>
        /// Initializes a new instance of this Command. The parameter-less constructor is required if 
        /// this Command is to be attached to a ToolStrip menu item or button. It should not be used in any other scenario.
        /// </summary>
        public ExportTemplateCommand()
        {
        }

        public ExportTemplateCommand(IMainWindow mainWindow, IEnumerable<SelectedItem> selection)
            : base(mainWindow, selection)
        {
        }

        public ExportTemplateCommand(IMainWindow mainWindow, VM template)
            : base(mainWindow, template)
        {
        }

        protected override void ExecuteCore(SelectedItemCollection selection)
        {
            VM vm = (VM)selection[0].XenObject;
            Host host = vm.Home();
            Pool pool = Helpers.GetPool(vm.Connection);

            if (host == null && pool != null)
            {
                host = pool.Connection.Resolve(pool.master);
            }

            new ExportVMCommand(MainWindowCommandInterface, new SelectedItem(vm, selection[0].Connection, host, null)).Execute();
        }

        protected override bool CanExecuteCore(SelectedItemCollection selection)
        {
            if (selection.Count == 1)
            {
                VM vm = selection[0].XenObject as VM;

                if (vm != null && vm.is_a_template && !vm.is_a_snapshot && !vm.Locked)
                {
                    if (vm.allowed_operations != null && vm.allowed_operations.Contains(vm_operations.export))
                    {
                        return true;
                    }
                }
            }
            return false;

        }

        public override string MenuText
        {
            get
            {
                return Messages.MAINWINDOW_EXPORT_TEMPLATE;
            }
        }
    }
}
