xenadmin/XenAdmin/Commands/ReconnectHostCommand.cs

/* Copyright (c) Citrix Systems, Inc. 
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using System;
using System.Collections.Generic;
using System.Text;
using XenAdmin.Network;
using System.Collections.ObjectModel;
using System.Windows.Forms;
using XenAPI;
using XenAdmin.Core;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Reconnects the selected Hosts.
    /// </summary>
    internal class ReconnectHostCommand : 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 ReconnectHostCommand()
        {
        }

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

        public ReconnectHostCommand(IMainWindow mainWindow, IXenConnection connection)
            : base(mainWindow, new SelectedItem(null, connection, null, null))
        {
        }

        protected override void ExecuteCore(SelectedItemCollection selection)
        {
            foreach (SelectedItem item in selection)
            {
                if (item.Connection != null && !item.Connection.IsConnected)
                {
                    if (selection.Count == 1)
                    {
                        item.Connection.CachePopulated += Connection_CachePopulated;
                    }
                    XenConnectionUI.BeginConnect(item.Connection, true, null, false);
                }
            }

            MainWindowCommandInterface.RequestRefreshTreeView();
        }

        private void Connection_CachePopulated(object sender, EventArgs e)
        {
            IXenConnection c = (IXenConnection)sender;
            c.CachePopulated -= Connection_CachePopulated;

            MainWindowCommandInterface.TrySelectNewObjectInTree(c, true, true, false);
        }

        protected override bool CanExecuteCore(SelectedItemCollection selection)
        {
            foreach (SelectedItem item in selection)
            {
                if (item.Connection != null && !item.Connection.IsConnected)
                {
                    return true;
                }
            }
            return false;
        }

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