protected override void OnActivityChanged(ActivityChangedEventArgs e)
{
Trace.WriteLine("ConnectorActivity - OnActivityChanged");
base.OnActivityChanged(e);
if (e.Member != null)
{
if (e.Member.Name == "Type")
{
if (base.Activity.Site != null)
{
Activity activity = e.Activity;
PropertyDescriptor descriptor = TypeDescriptor.GetProperties(base.Activity)["MethodName"];
if (descriptor != null)
{
descriptor.SetValue(base.Activity, string.Empty);
}
}
}
else if (e.Member.Name == "MethodName")
{
OperationContractWorkflowBase activity = e.Activity as OperationContractWorkflowBase;
if (activity != null)
{
activity.Parameters.Clear();
//refresh corresponding ReturnActivity
if (activity.Parent == null)
{
foreach (Activity item in activity.Activities)
{
if ((item is ReturnActivity) && (((ReturnActivity)item).ConnectorActivityName == activity.QualifiedName))
{
(item as ReturnActivity).ConnectorActivityName = string.Empty;
(item as ReturnActivity).Parameters.Clear();
TypeDescriptor.Refresh(item);
}
}
}
}
}
if ((e.Member.Name == "Type") || (e.Member.Name == "MethodName"))
{
TypeDescriptor.Refresh(e.Activity);
}
}
}
protected override void PreFilterProperties(IDictionary properties)
{
base.PreFilterProperties(properties);
OperationContractWorkflowBase activity = this.Activity as OperationContractWorkflowBase;
if (activity != null && activity.Type != null && activity.MethodName != null)
{
MethodInfo mi = activity.Type.GetMethod(activity.MethodName);
if (mi != null)
{
//get the parameters and add them as properties
ParameterInfo[] pis = mi.GetParameters();
if (pis != null)
{
foreach (ParameterInfo pi in pis)
{
//add a new parameter
properties[pi.Name] = new ParameterBindingPropertyDescriptor <ConnectorActivity>(pi.Name, pi.ParameterType, new Attribute[] { new DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Hidden), new BrowsableAttribute(true), new CategoryAttribute("Parameters"), new DescriptionAttribute(pi.ParameterType.FullName), new EditorAttribute(typeof(BindUITypeEditor), typeof(UITypeEditor)) });
}
}
}
}
}
public override ValidationErrorCollection Validate(ValidationManager manager, object obj)
{
Trace.WriteLine("OperationContractWorkflowValidator");
#region validate Activity
if (manager == null)
{
throw new ArgumentNullException("manager");
}
if (obj == null)
{
throw new ArgumentNullException("obj");
}
ValidationErrorCollection collection = base.Validate(manager, obj);
if (collection.HasErrors)
{
return(collection);
}
OperationContractWorkflowBase activity = obj as OperationContractWorkflowBase;
collection.Clear();
if (activity == null)
{
throw new NullReferenceException("activity");
}
#endregion
#region validate Properties (In Order)
if (activity.Type == null)
{
collection.Add(new ValidationError("The Type property is invalid (null).", 0, true, "Type"));
return(collection);
}
if (!activity.Type.IsInterface)
{
collection.Add(new ValidationError("The Type is not Interface", 0, false, "Type"));
return(collection);
}
if (string.IsNullOrEmpty(activity.MethodName))
{
collection.Add(ValidationError.GetNotSetValidationError("MethodName"));
return(collection);
}
if (activity.Type.GetMethod(activity.MethodName).ReturnType != typeof(void))
{
bool bExist = false;
foreach (Activity item in activity.EnabledActivities)
{
if (item is ReturnActivity)
{
ReturnActivity rra = item as ReturnActivity;
if (rra.ConnectorActivityName == activity.QualifiedName)
{
bExist = true;
break;
}
}
}
if (!bExist)
{
collection.Add(new ValidationError("Missing corresponding ReturnActivity for handling a return value", 0));
return(collection);
}
}
#endregion
return(collection);
}
