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using System.Windows.Forms;
using System.Drawing;
using XenAdmin.Dialogs;
using XenAdmin.Network;
using XenAPI;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Pops up the dialog for adding a new Host to XenCenter.
    /// </summary>
    internal class AddHostCommand : Command
    {
        private AddServerDialog _dialog;

        /// <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 AddHostCommand()
        {
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="AddHostCommand"/> class. 
        /// </summary>
        /// <param name="mainWindow">The main window interface. It can be found at MainWindow.CommandInterface.</param>
        public AddHostCommand(IMainWindow mainWindow)
            : base(mainWindow)
        {
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="AddHostCommand"/> class.
        /// </summary>
        /// <param name="mainWindow">The main window interface. It can be found at MainWindow.CommandInterface.</param>
        /// <param name="parent">The parent for the Add Server dialog.</param>
        public AddHostCommand(IMainWindow mainWindow, Control parent)
            : base(mainWindow)
        {
            Parent = parent;
        }

        protected override void RunCore(SelectedItemCollection selection)
        {
            _dialog = new AddServerDialog(null, false);
            _dialog.CachePopulated += dialog_CachePopulated;
            _dialog.Show(Parent);
        }

        private void dialog_CachePopulated(IXenConnection conn)
        {
            _dialog.CachePopulated -= dialog_CachePopulated;

            // first select the disconnected host in the tree
            // before the tree is populated, the opaque_ref of the disconnected host is the hostname
            // so use this to select the object.
            MainWindowCommandInterface.Invoke(() => MainWindowCommandInterface.SelectObjectInTree(new Host { opaque_ref = conn.Hostname }));
            MainWindowCommandInterface.TrySelectNewObjectInTree(conn, true, true, true);
        }

        public override Image MenuImage => Images.StaticImages._000_AddApplicationServer_h32bit_16;

        public override Image ToolBarImage => Images.StaticImages._000_AddApplicationServer_h32bit_24;

        public override string MenuText => Messages.MAINWINDOW_ADD_HOST;
    }
}