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using System;
using System.Collections.Generic;
using System.Text;
using XenAPI;
using XenAdmin.Dialogs;
using XenAdmin.Network;
using System.Collections.ObjectModel;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Shows the reconnect-as dialog.
    /// </summary>
    internal class HostReconnectAsCommand : 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 HostReconnectAsCommand()
        {
        }

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

        public HostReconnectAsCommand(IMainWindow mainWindow, Host host)
            : base(mainWindow, host)
        {
        }

        protected override void ExecuteCore(SelectedItemCollection selection)
        {
            new ReconnectAsDialog(selection[0].Connection).ShowDialog(Parent);
        }

        protected override bool CanExecuteCore(SelectedItemCollection selection)
        {
            if (selection.Count == 1)
            {
                IXenConnection connection = selection[0].Connection;
                if (!XenAdmin.Core.Helpers.GeorgeOrGreater(connection))
                    return false;
                bool connected = connection != null && connection.IsConnected;
                Host host = selection[0].XenObject as Host;
                bool is_host = (host != null);
                bool is_master = is_host && host.IsMaster();
                return (connected && is_master) || (connection != null && connection.InProgress && !connection.IsConnected);
            }
            return false;
        }

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