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 *     following disclaimer. 
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using System;
using System.Collections.Generic;
using System.Linq;
using XenAdmin.Controls;
using XenAdmin.Wizards.GenericPages;
using XenAPI;

namespace XenAdmin.Wizards.CrossPoolMigrateWizard
{
    class CrossPoolMigrateStoragePage : SelectVMStorageWithMultipleVirtualDisksPage
    {
        public CrossPoolMigrateStoragePage()
        {
            DisplayDiskCapacity = false;
        }

        protected override bool ImplementsIsDirty()
        {
            return true;
        }

        protected override bool SrIsSuitable(SR sr)
        {
            return sr != null && !sr.HBALunPerVDI;
        }

        /// <summary>
        /// Gets the page's title (headline)
        /// </summary>
        public override string PageTitle { get { return Messages.CPM_WIZARD_SELECT_STORAGE_PAGE_TITLE; } }

        /// <summary>
        /// Gets the page's label in the (left hand side) wizard progress panel
        /// </summary>
        public override string Text { get { return Messages.CPM_WIZARD_SELECT_STORAGE_PAGE_TEXT; } }

        protected override string IntroductionText { get { return Messages.CPM_WIZARD_STORAGE_INSTRUCTIONS; } }
        protected override string AllOnSameSRRadioButtonText { get { return Messages.CPM_WIZARD_ALL_ON_SAME_SR_RADIO; } }
        protected override string OnSpecificSRRadioButtonText { get { return Messages.CPM_WIZARD_SPECIFIC_SR_RADIO; } }

        /// <summary>
        /// Gets the value by which the help files section for this page is identified
        /// </summary>
        public override string HelpID { get { return "Storage"; } }

        public override StorageResourceContainer ResourceData(string sysId)
        {
            VM vm = Connection.Resolve(new XenRef<VM>(sysId));

            if (vm == null)
                return null;

            List<VDI> vdis = Connection.ResolveAll(vm.VBDs).Select(v => vm.Connection.Resolve(v.VDI)).ToList();
            vdis.RemoveAll(vdi => vdi == null || Connection.Resolve(vdi.SR).GetSRType(true) == SR.SRTypes.iso);
            return new CrossPoolMigrationStorageResourceContainer(vdis);
        }

        public override void PageLeave(PageLoadedDirection direction, ref bool cancel)
        {
            if (!CrossPoolMigrateWizard.AllVMsAvailable(VmMappings, Connection))
            {
                cancel = true;
                SetButtonNextEnabled(false);
                SetButtonPreviousEnabled(false);
            }

            base.PageLeave(direction, ref cancel);
        }
    }
}