//
//
#endregion//Event Handlers
#region Public Methods
// *************************************************************************
// **** Public Methods ****
// *************************************************************************
public EngineEventArgs Copy()
{
EngineEventArgs newEventArg = new EngineEventArgs();
this.CopyTo(newEventArg);
return(newEventArg);
}
//
//
// *****************************************
// **** Controls ****
// *****************************************
public static EngineEventArgs RequestAllControls(string engineHubName)
{
EngineEventArgs req = new EngineEventArgs();
req.MsgType = EventType.GetControls;
req.Status = EventStatus.Request;
req.EngineHubName = engineHubName;
return(req);
}//end Request AllControls
}//end Request AllControls
public static EngineEventArgs ConfirmNewControls(string engineHubName, int engineContainerId = -1)
{
EngineEventArgs req = new EngineEventArgs();
req.MsgType = EventType.GetControls;
req.Status = EventStatus.Request;
req.EngineHubName = engineHubName;
req.EngineContainerID = engineContainerId; // request controls for single engine container.
return(req);
}
}// GetParameterValue()
//
//
//
//
//
// **** Get Event For Parameter Values ****
//
/// <summary>
/// This method allows an outsider to ask the Engine to automatically create
/// the appropriate EngineEventArg that can be used to have it broadcast its
/// current parameter values.
/// This is useful when the Engine's parameters have been changed internally
/// by some method, orther than the usual EngineEventArg parameter Change request,
/// which will usually produce a response event automatically anyway.
/// For example, use this when an engine parameter spontaneously changes (from
/// a market event, or fill, or by the action of a model) to send the new parameter
/// values to all GUIs, even though no one requested one.
/// </summary>
public virtual EngineEventArgs GetEventForParameterValues(IEngineContainer parent)
{
EngineEventArgs newEvent = new EngineEventArgs();
newEvent.MsgType = EngineEventArgs.EventType.ParameterValue;
newEvent.Status = EngineEventArgs.EventStatus.Request;
newEvent.EngineContainerID = parent.EngineContainerID;
newEvent.EngineID = this.EngineID;
return(newEvent);
}// GetEventForParameterValues();
// *****************************************
// **** Parameter Values ****
// *****************************************
/// <summary>
/// Requests all parameter values from one engine.
/// </summary>
public static EngineEventArgs RequestAllParameters(string engineHubName, int containerId, int engineId)
{
EngineEventArgs req = new EngineEventArgs();
req.MsgType = EventType.ParameterValue;
req.Status = EventStatus.Request;
req.EngineHubName = engineHubName;
req.EngineContainerID = containerId;
req.EngineID = engineId;
return(req);
}
}//end Request AllControls
//
//
// *****************************************
// **** RequestSaveEngines ****
// *****************************************
public static EngineEventArgs RequestSaveEngines(string engineHubName, int engineContainerId = -1)
{
EngineEventArgs req = new EngineEventArgs();
req.MsgType = EventType.SaveEngines;
req.Status = EventStatus.Request;
req.EngineHubName = engineHubName;
req.EngineContainerID = engineContainerId; // request controls for single engine container.
// TODO: In future, allow data with file path to be addded.
return(req);
}//end Request AllControls
}//RequestParameterChange()
//
//
// *****************************************
// **** NewEngine ****
// *****************************************
public static EngineEventArgs ConfirmNewEngine(string engineHubName, int containerId, Engine newEngine)
{
EngineEventArgs e = new EngineEventArgs();
e.EngineHubName = engineHubName;
e.EngineContainerID = containerId;
e.EngineID = newEngine.EngineID;
e.MsgType = EngineEventArgs.EventType.NewEngine;
e.Status = EngineEventArgs.EventStatus.Confirm;
// Load necessary information for RemoteEngine back at the StrategyHub
e.DataObjectList = new List <object>();
e.DataObjectList.AddRange(newEngine.GetGuiTemplates());
return(e);
}//end Request AllControls
//
//
//
// *****************************************
// **** Parameter Change ****
// *****************************************
public static EngineEventArgs RequestParameterChange(ParameterInfo pInfo, object newValue)//, int RequestingHubID)
{
EngineEventArgs req = new EngineEventArgs();
req.EngineHubName = pInfo.EngineHubName;
req.EngineContainerID = pInfo.EngineContainerID;
req.EngineID = pInfo.EngineID;
req.MsgType = EngineEventArgs.EventType.ParameterChange;
req.Status = EngineEventArgs.EventStatus.Request;
req.DataIntA = new int[] { pInfo.ParameterID };
req.DataObjectList = new List <object>();
req.DataObjectList.Add(newValue);
return(req);
}//RequestParameterChange()
} // GetEventForParameterValues();
//
//
/// <summary>
/// This method allows an engine to broadcast all of his own parameters even if not
/// requested by the user. This is useful when the engine changed its parameters automatically,
/// and now wants to ensure the user knows about it.
/// </summary>
/// <param name="hub"></param>
/// <param name="parent"></param>
public void BroadcastAllParameters(IEngineHub hub, IEngineContainer parent)
{
EngineEventArgs eArgs = new EngineEventArgs();
eArgs.MsgType = EngineEventArgs.EventType.ParameterValue;
eArgs.Status = EngineEventArgs.EventStatus.Confirm;
eArgs.EngineHubName = hub.ServiceName;
eArgs.EngineContainerID = parent.EngineContainerID;
eArgs.EngineID = this.EngineID;
if (GetParameterValue(ref eArgs.DataIntA, ref eArgs.DataObjectList))
{
m_EventQueue.Add(eArgs);
}
} // BroadcastParameters()
} // BroadcastParameters()
//
//
/// <summary>
/// This methods allows an engine to broadcast a single parameter that has not been requested by the user
/// If a parameter is changed internally (programatically) this can be used to transmit to the gui.
/// </summary>
/// <param name="hub"></param>
/// <param name="parent"></param>
/// <param name="propertyId"></param>
public void BroadcastParameter(IEngineHub hub, IEngineContainer parent, int propertyId)
{
EngineEventArgs eArgs = new EngineEventArgs();
eArgs.MsgType = EngineEventArgs.EventType.ParameterValue;
eArgs.Status = EngineEventArgs.EventStatus.Confirm;
eArgs.EngineHubName = hub.ServiceName;
eArgs.EngineContainerID = parent.EngineContainerID;
eArgs.EngineID = this.EngineID;
eArgs.DataIntA = new int[] { propertyId };
eArgs.DataObjectList = new List <object>();
if (GetParameterValue(ref eArgs.DataIntA, ref eArgs.DataObjectList))
{
m_EventQueue.Add(eArgs);
}
}
//
protected void CopyTo(EngineEventArgs newArg)
{
newArg.MsgType = this.MsgType;
newArg.Status = this.Status;
newArg.EngineHubName = this.EngineHubName;
newArg.EngineContainerID = this.EngineContainerID;
newArg.EngineID = this.EngineID;
// Object data
if (this.DataObjectList != null)
{
object[] oArray = new object[DataObjectList.Count];
this.DataObjectList.CopyTo(oArray);
newArg.DataObjectList = new List <object>(oArray);
}
// Integer data.
if (this.DataIntA != null)
{
newArg.DataIntA = new int[this.DataIntA.Length];
this.DataIntA.CopyTo(newArg.DataIntA, 0);
}
if (this.DataIntB != null)
{
newArg.DataIntB = new int[this.DataIntB.Length];
this.DataIntB.CopyTo(newArg.DataIntB, 0);
}
if (this.DataIntC != null)
{
newArg.DataIntC = new int[this.DataIntC.Length];
this.DataIntC.CopyTo(newArg.DataIntC, 0);
}
// double data.
if (this.DataA != null)
{
newArg.DataA = new double[this.DataA.Length];
this.DataA.CopyTo(newArg.DataA, 0);
}
if (this.DataB != null)
{
newArg.DataB = new double[this.DataB.Length];
this.DataB.CopyTo(newArg.DataB, 0);
}
if (this.DataC != null)
{
newArg.DataC = new double[this.DataC.Length];
this.DataC.CopyTo(newArg.DataC, 0);
}
} // CopyTo()
// *****************************************************************
// **** Control Management ****
// *****************************************************************
//public HudPanel GetHudPanel()
//{
// return null;
//}
//public IEngineControl GetControl()
//{
// return null;
//}
//
// **** GetControl() ****
//
// <summary>
// This implements part of IEngine. It automatically creates a copy of the
// generic Pop Up control panel for displaying parameters of this engine.
// </summary>
// <returns></returns>
/*
* public IEngineControl GetControl()
* {
* if (m_EnginePopUpControl != null)
* {
* Type t = m_EnginePopUpControl.GetType();
* object p = null;
* p = t.InvokeMember("", System.Reflection.BindingFlags.CreateInstance, null, m_EnginePopUpControl, new object[] { this.EngineID, m_PInfo });
* return (IEngineControl)p;
* }
* else
* return null;
* }// GetControl().
* //
* //
* // **** GetHudPanel() ****
* //
* /// <summary>
* /// This implements part of IEngine. Automatically creates a copy of the heads up panel
* /// to display critical parameters.
* /// </summary>
* /// <returns></returns>
* public HudPanel GetHudPanel()
* {
* if (m_HudPanel != null)
* {
* Type t = m_HudPanel.GetType();
* object p = null;
* p = t.InvokeMember("", System.Reflection.BindingFlags.CreateInstance, null, m_HudPanel, new object[] { this.EngineID, m_PInfo });
* return (HudPanel)p;
* }
* else
* return null;
* }// GetControl().
* //
* // This overload allows outsiders to reset and change EnginePanels.
* public HudPanel GetHudPanel(HudPanel newPanel)
* {
* m_HudPanel = newPanel;
* return newPanel;
* }
*/
//
//
//
//
#endregion//Control Management
#region Engine Event Processing
// *****************************************************************
// **** Public Methods ****
// *****************************************************************
//
//
//
// **** ProcessEvent() ****
//
/// <summary>
/// This method is the way that EngineEventArgs are passed to an engine to process.
/// The action taken depends on the type of engine.
/// The implementation is required by IEngine; engines can override this implementation.
/// Current implementation:
/// 1. This implementation is most common, for a Strategy engine that receives from outsiders
/// (normally user requests for parameter changes) to change its internal parameters.
/// A. It tries to make the requested changes and respond to the caller the results.
/// 2. If an engine overrides this with additional functionality, this method can still be
/// called to process all EngineEventArgs events, it does nothing and returns when passed
/// any other type of event.
/// </summary>
/// <param name="e">Request passed in via an EngineEventArg.</param>
public virtual void ProcessEvent(EventArgs e)
{
if (e.GetType() != typeof(EngineEventArgs))
{
return; // here is processing of EngineEventArgs only!
}
EngineEventArgs eArgs = (EngineEventArgs)e;
EngineEventArgs.EventType requestType = eArgs.MsgType;
EngineEventArgs.EventStatus requestStatus = eArgs.Status;
// Validate this message
if (requestStatus != EngineEventArgs.EventStatus.Request)
{
return; // I ignore all but requests.
}
//
// Process the request.
//
switch (requestType)
{
//
// **** Parameter Value Request ****
//
case EngineEventArgs.EventType.ParameterValue:
// This is a request to broadcast the values of a single, multiple or all parameters.
// eArgs.DataIntA contains parameter IDs for each parameter requested, or
// eArgs.DataIntA = null, if all are requested.
eArgs.DataObjectList = new List <object>();
if (GetParameterValue(ref eArgs.DataIntA, ref eArgs.DataObjectList))
{
eArgs.Status = EngineEventArgs.EventStatus.Confirm; // found parameters
}
else
{
eArgs.Status = EngineEventArgs.EventStatus.Failed; // did not find parameters
}
break;
//
// **** Parameter Change Request ****
//
case EngineEventArgs.EventType.ParameterChange:
// This is a request to change the value of one or more parameters.
if (eArgs.DataIntA == null)
{ // Here, cannot blindly change all parameter values, this should NOT be null.
eArgs.Status = EngineEventArgs.EventStatus.Failed;
}
else
{ // eArgs.DataIntA contains list of parameter IDs that user wants changed.
// eArgs.DataObjectList contains new values desired.
bool logEnabled = false;
if (m_Log != null)
{
logEnabled = m_Log.BeginEntry(Hubs.LogLevel.Major, "ProcessEvent: {2} {0} #{1} parameter change request: ", m_EngineName, m_EngineID,
(m_Parent != null ? string.Format("{0} #{1}", m_Parent.EngineContainerName, m_Parent.EngineContainerID) : string.Empty));
}
for (int i = 0; i < eArgs.DataIntA.Length; ++i) //ith parameter in the list inside the event.
{
int pID = eArgs.DataIntA[i]; // propertyID of parameter
ParameterInfo pInfo = m_PInfo[pID];
PropertyInfo property = this.GetType().GetProperty(pInfo.Name);
if (logEnabled)
{
m_Log.AppendEntry("[{0}, requested value={1},", pInfo.Name, eArgs.DataObjectList[i]);
}
if (property.CanWrite)
{ // If writable, try to set value of this parameter in *this* object.
try
{
property.SetValue(this, eArgs.DataObjectList[i], null);
}
catch (Exception)
{
}
}
// Regardless of result, get the current value
object o = property.GetValue(this, null);
eArgs.DataObjectList[i] = o;
if (logEnabled)
{
m_Log.AppendEntry(" final value={0}] ", eArgs.DataObjectList[i]);
}
}
if (logEnabled)
{
m_Log.EndEntry();
}
// Set status to confirm signifying that the values in the message
// are the correct, confirmed values from the engine.
eArgs.Status = EngineEventArgs.EventStatus.Confirm;
this.IsUpdateRequired = true; // signal that we need updating!
}
break;
default:
eArgs.Status = EngineEventArgs.EventStatus.Failed;
break;
}
}//end ProcessEngineEvent()
