xenadmin/XenAdmin/Commands/InstantVMFromTemplateCommand.cs

/* Copyright (c) Citrix Systems Inc. 
 * All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met: 
 * 
 * *   Redistributions of source code must retain the above 
 *     copyright notice, this list of conditions and the 
 *     following disclaimer. 
 * *   Redistributions in binary form must reproduce the above 
 *     copyright notice, this list of conditions and the 
 *     following disclaimer in the documentation and/or other 
 *     materials provided with the distribution. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE.
 */

using System;
using System.Collections.Generic;
using System.Text;

using XenAdmin.Actions;

using XenAPI;
using XenAdmin.Actions.VMActions;
using System.Collections.ObjectModel;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Creates a VM from the specified template.
    /// </summary>
    internal class InstantVMFromTemplateCommand : 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 InstantVMFromTemplateCommand()
        {
        }

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

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

        protected override void ExecuteCore(SelectedItemCollection selection)
        {
           var createAction= new CreateVMFastAction(selection[0].Connection, selection[0].XenObject as VM);
           createAction.Completed += createAction_Completed;
            createAction.RunAsync();
        }

        static void createAction_Completed(ActionBase sender)
        {
            CreateVMFastAction action = (CreateVMFastAction) sender;
            var startAction = new VMStartAction(action.Connection.Resolve(new XenRef<VM>(action.Result)), VMOperationCommand.WarningDialogHAInvalidConfig, VMOperationCommand.StartDiagnosisForm);
            startAction.RunAsync();
        }

        protected override bool CanExecuteCore(SelectedItemCollection selection)
        {
            return selection.ContainsOneItemOfType<VM>() && selection.AtLeastOneXenObjectCan<VM>(CanExecute);
        }

        private static bool CanExecute(VM vm)
        {
            return vm != null && vm.is_a_template && !vm.Locked && !vm.is_a_snapshot && vm.InstantTemplate;
        }

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