Host and Workflow: Two Worlds to Communicate IV

///////////////////////////////////////////////////////////
//  CommunicationValve.cs
//  Implementation of the Class CommunicationValve
//  Generated by Enterprise Architect
//  Created on:      24-Sep-2008 17:06:18
//  Original author: JAGG
///////////////////////////////////////////////////////////



using System;
using System.Workflow.Activities;
using jagg.ClassCommunication;

namespace jagg.ClassCommunication 
{
	public class CommunicationValve : ICommunicationValve
    {

        #region WF -> Host Communication

        public event EventHandler<ExternalValveEventArgs> EventValveStatus;

      /// <summary>
		/// Used by CallExternalEvent Argument to pass the valve status to Host
		/// </summary>
		/// <param name="status">Valve status OPEN / CLOSE / EXIT</param>
		public void StatusValve(Guid wfGuid, string status)
        {
             
            if (EventValveStatus != null)
            {
              ExternalValveEventArgs e = new ExternalValveEventArgs(wfGuid);
              e.Status = status;
              EventValveStatus(this, e); //Raise the event
            }
		}

        #endregion

        #region Host -> WF

        /// <summary>
		/// Use to pass the valve operation to workflow
		/// </summary>
		public event EventHandler<ExternalDataEventArgs> CloseValve;
  
		/// <summary>
		/// Use to pass the valve operation to workflow
		/// </summary>
		public event EventHandler<ExternalDataEventArgs> Exit;
  
		/// <summary>
		/// Use to pass the valve operation to workflow
		/// </summary>
		public event EventHandler<ExternalDataEventArgs> OpenValve;
         #endregion

        #region Auxiliar procedures
        /// <summary>
        /// Raise the event Exit
        /// </summary>
        /// <param name="instanceId">workflow instance</param>
        public void RaiseExit(Guid instanceId)
        {
            if (Exit != null)
            {
                ExternalDataEventArgs e = new ExternalDataEventArgs(instanceId);
                e.WaitForIdle = true;
                Exit(null, e);
            }
        }
        /// <summary>
        /// Raise the event Open
        /// </summary>
        /// <param name="instanceId">workflow instance</param>
        public void RaiseOpen(Guid instanceId)
        {
            if (OpenValve != null)
            {
                ExternalDataEventArgs e = new ExternalDataEventArgs(instanceId);
                OpenValve(null, e);
             }
        }
        /// <summary>
        /// Raise the event Close
        /// </summary>
        /// <param name="instanceId">workflow instance</param>
        public void RaiseClose(Guid instanceId)
        {
            if (CloseValve != null)
            {
                ExternalDataEventArgs e = new ExternalDataEventArgs(instanceId);
                CloseValve(null, e);
            }
        }
        #endregion

    }//end CommunicationValve

}//end namespace ClassCommunication