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using System.Collections.Generic;
using XenAdmin.Core;
using XenAPI;
using XenAdmin.Actions;
using System.Drawing;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Makes the selected SR the default SR.
    /// </summary>
    internal class SetAsDefaultSRCommand : 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 SetAsDefaultSRCommand()
        {
        }

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

        public SetAsDefaultSRCommand(IMainWindow mainWindow, SR sr)
            : base(mainWindow, sr)
        {
        }

        protected override void RunCore(SelectedItemCollection selection)
        {
            new SetSrAsDefaultAction((SR)selection[0].XenObject).RunAsync();
        }

        protected override bool CanRunCore(SelectedItemCollection selection)
        {
            return selection.ContainsOneItemOfType<SR>() && selection.AtLeastOneXenObjectCan<SR>(CanRun);
        }

        private static bool CanRun(SR sr)
        {
            return sr != null
                    && sr.HasPBDs()
                    && !SR.IsDefaultSr(sr)
                    && sr.SupportsVdiCreate()
                    && (sr.shared || sr.Connection.Cache.HostCount <= 1)
                    && !HelpersGUI.GetActionInProgress(sr);
        }

        public override Image MenuImage
        {
            get
            {
                return Images.StaticImages._000_StorageDefault_h32bit_16;
            }
        }

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

    }
}