xenadmin/XenAdmin/Commands/ConvertToThinSRCommand.cs

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using System;
using System.Collections.Generic;
using System.Text;
using XenAPI;
using XenAdmin.Core;
using XenAdmin.Network;
using XenAdmin.Wizards.NewVMWizard;
using XenAdmin.Properties;
using System.Drawing;
using System.Collections.ObjectModel;
using System.Windows.Forms;
using XenAdmin.Dialogs;
using XenAdmin.Actions;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Launches the New VM Wizard.
    /// </summary>
    internal class ConvertToThinSRCommand : Command
    {
        SR SR { get;  set; }
 
        /// <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 ConvertToThinSRCommand()
        {
        }

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


        protected override void ExecuteCore(SelectedItemCollection selection)
        {
            SR = GetFirstThickSRFromSelection(selection);
            
            var dialog = new ConvertToThinSRDialog(this.SR.Connection, SR);
            dialog.Show();
        }

        protected override bool ConfirmationRequired
        {
            get
            {
                return false;
            }
        }

        protected override bool CanExecuteCore(SelectedItemCollection selection)
        {
            var sr = GetFirstThickSRFromSelection(selection);

            return sr != null && sr.Provisioning == SrProvisioning.Thick && (sr.type == "lvmohba" || sr.type == "lvmoiscsi");
        }

        private SR GetFirstThickSRFromSelection(SelectedItemCollection selection)
        {
            foreach (SelectedItem item in selection)
            {
                var sr = item.XenObject as SR;

                if (sr != null && !sr.IsThinProvisioned)
                    return sr;
            }

            return null;
        }

        public override string MenuText
        {
            get
            {
                return ContextMenuText;
            }
        }

        public override string ContextMenuText
        {
            get
            {
                return Messages.MAINWINDOW_SR_CONVERT_TO_THIN_CONTEXT_MENU;
            }
        }
    }
}