using ORiN2.ManagedCAO;
using System;
using System.Windows.Forms;

namespace Message
{
    public partial class frmMessage : Form
    {
        private CCaoEngine caoEng;
        private CCaoWorkspaces caoWss;
        private CCaoWorkspace caoWs;
        private CCaoControllers caoCtrls;
        private CCaoController caoCtrl;

        public frmMessage()
        {
            InitializeComponent();
        }

        private void frmMessage_Load(object sender, EventArgs e)
        {
            try
            {
                // Create CAO Engine
                caoEng = new CCaoEngine();
                caoWss = caoEng.Workspaces;
                caoWs = caoWss[0];

                // Get Controller Collection
                caoCtrls = caoWs.Controllers;

                // Create CAO Controller
                caoCtrl = caoCtrls.Add("RC1", "CaoProv.Dummy", "", "");

                // Register Event Handler
                caoCtrl.OnMessage += new OnMesssageEventHandler(OnMessage);

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void frmMessage_FormClosed(object sender, FormClosedEventArgs e)
        {
            try
            {
                if (caoCtrl != null)
                {
                    caoCtrl.OnMessage -= new OnMesssageEventHandler(OnMessage);
                    Application.DoEvents();
                }
                if (caoEng != null)
                {
                    caoEng.Dispose();
                }

                caoCtrl = null;
                caoCtrls = null;
                caoWs = null;
                caoWss = null;
                caoEng = null;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void cmdExecute_Click(object sender, EventArgs e)
        {
            try
            {
                caoCtrl.Execute("", "");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        // OnMessage Event
        private void OnMessage(object sender, OnMessageEventArgs e)
        {
            Action act = () => { textBox1.Text = e.Message.Value.ToString(); };

            if (InvokeRequired)
            {
                Invoke(act);
            }
            else
            {
                act();
            }
        }
    }
}