xenadmin/XenAdmin/Commands/NewVMFromSnapshotCommand.cs

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using System;
using System.Collections.Generic;
using System.Text;
using XenAdmin.Properties;
using System.Drawing;
using XenAPI;
using System.Collections.ObjectModel;


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

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

        public NewVMFromSnapshotCommand(IMainWindow mainWindow, VM snapshot)
            : base(mainWindow, new SelectedItem(snapshot, snapshot.Connection, null, null))
        {
        }

        protected override void ExecuteCore(SelectedItemCollection selection)
        {
            VM snapshot = (VM)selection[0].XenObject;
            
            new NewVMCommand(MainWindowCommandInterface, snapshot.Connection, null, snapshot).Execute();
        }

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

                return vm != null && vm.is_a_snapshot;
            }
            return false;
        }

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

        public override Image MenuImage
        {
            get
            {
                return Resources._001_CreateVM_h32bit_16;
            }
        }
    }
}