xenadmin/XenAdmin/Commands/NewVMFromTemplateCommand.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 XenAPI;
using XenAdmin.Core;
using XenAdmin.Properties;
using System.Drawing;
using System.Collections.ObjectModel;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Launches the New VM Wizard with the selected template as the source.
    /// </summary>
    internal class NewVMFromTemplateCommand : 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 NewVMFromTemplateCommand()
        {
        }

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

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

        protected override void ExecuteCore(SelectedItemCollection selection)
        {
            new NewVMCommand(MainWindowCommandInterface, selection).Execute();
        }

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

        private static bool CanExecute(VM vm)
        {
            if (vm != null && vm.is_a_template && !vm.is_a_snapshot && !vm.Locked && vm.Connection.IsConnected)
            {
                Pool pool = Helpers.GetPoolOfOne(vm.Connection);
                return (pool != null && Helpers.PoolHasEnabledHosts(pool));
            }
            return false;
        }

        public override Image MenuImage
        {
            get
            {
                return Images.StaticImages._001_CreateVM_h32bit_16;
            }
        }

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