xenadmin/XenAdmin/Commands/ConnectAllHostsCommand.cs

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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>
    /// Connects all hosts.
    /// </summary>
    internal class ConnectAllHostsCommand : Command
    {
        /// <summary>
        /// Initializes a new instance of this Command. The parameter-less constructor is required in the derived
        /// class if it is to be attached to a ToolStrip menu item or button. It should not be used in any other scenario.
        /// </summary>
        public ConnectAllHostsCommand()
        {
        }

        public ConnectAllHostsCommand(IMainWindow mainWindow)
            : base(mainWindow)
        {
        }

        protected override void ExecuteCore(SelectedItemCollection selection)
        {
            bool expand = MainWindowCommandInterface.GetXenConnectionsCopy().Count < 30;
            foreach (IXenConnection c in MainWindowCommandInterface.GetXenConnectionsCopy())
            {
                if (!c.IsConnected && !c.InProgress)
                {
                    MainWindowCommandInterface.Invoke(delegate
                    {
                        if (expand)
                        {
                            c.CachePopulated += c_CachePopulated;
                        }
                        XenConnectionUI.BeginConnect(c, false, null, false);
                        MainWindowCommandInterface.RequestRefreshTreeView();
                    });
                }
            }
        }

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

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

        protected override bool CanExecuteCore(SelectedItemCollection selection)
        {
            foreach (IXenConnection c in MainWindowCommandInterface.GetXenConnectionsCopy())
            {
                if (!c.InProgress && !c.IsConnected)
                {
                    return true;
                }
            }
            return false;
        }

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