protected sealed override void OnActivityChangeRemove(ActivityExecutionContext executionContext, Activity removedActivity)
{
if (executionContext == null)
{
throw new ArgumentNullException("executionContext");
}
if (removedActivity == null)
{
throw new ArgumentNullException("removedActivity");
}
ListenActivity activity = executionContext.Activity as ListenActivity;
if (((activity.ExecutionStatus == ActivityExecutionStatus.Executing) && (activity.ActivityState != null)) && !activity.IsListenTrigerred)
{
EventDrivenActivity activity2 = removedActivity as EventDrivenActivity;
for (int i = 0; i < activity.ActivityState.Count; i++)
{
ListenEventActivitySubscriber parentEventHandler = activity.ActivityState[i];
if (parentEventHandler.eventDrivenActivity.QualifiedName.Equals(activity2.QualifiedName))
{
activity2.EventActivity.Unsubscribe(executionContext, parentEventHandler);
activity.ActivityState.RemoveAt(i);
return;
}
}
}
else if (this.IsListenTrigerred && (removedActivity.ExecutionStatus == ActivityExecutionStatus.Closed))
{
this.activeBranchRemoved = true;
}
}
void IActivityEventListener <QueueEventArgs> .OnEvent(object sender, QueueEventArgs e)
{
if (sender == null)
{
throw new ArgumentNullException("sender");
}
if (e == null)
{
throw new ArgumentNullException("e");
}
ActivityExecutionContext parentContext = sender as ActivityExecutionContext;
if (parentContext == null)
{
throw new ArgumentException(SR.Error_SenderMustBeActivityExecutionContext, "sender");
}
ListenActivity activityStatusChangeListener = parentContext.Activity as ListenActivity;
if (((!activityStatusChangeListener.IsListenTrigerred && (activityStatusChangeListener.ExecutionStatus != ActivityExecutionStatus.Canceling)) && (activityStatusChangeListener.ExecutionStatus != ActivityExecutionStatus.Closed)) && activityStatusChangeListener.EnabledActivities.Contains(this.eventDrivenActivity))
{
activityStatusChangeListener.IsListenTrigerred = true;
for (int i = 0; i < activityStatusChangeListener.EnabledActivities.Count; i++)
{
EventDrivenActivity activity2 = activityStatusChangeListener.EnabledActivities[i] as EventDrivenActivity;
ListenActivity.ListenEventActivitySubscriber parentEventHandler = activityStatusChangeListener.ActivityState[i];
activity2.EventActivity.Unsubscribe(parentContext, parentEventHandler);
}
this.eventDrivenActivity.RegisterForStatusChange(Activity.ClosedEvent, activityStatusChangeListener);
parentContext.ExecuteActivity(this.eventDrivenActivity);
}
}
public override ValidationErrorCollection Validate(ValidationManager manager, object obj)
{
ValidationErrorCollection validationErrors = new ValidationErrorCollection(base.Validate(manager, obj));
ListenActivity listen = obj as ListenActivity;
if (listen == null)
{
throw new ArgumentException(SR.GetString(SR.Error_UnexpectedArgumentType, typeof(ListenActivity).FullName), "obj");
}
// Validate number of children
if (listen.EnabledActivities.Count < 2)
{
validationErrors.Add(new ValidationError(SR.GetString(SR.Error_ListenLessThanTwoChildren), ErrorNumbers.Error_ListenLessThanTwoChildren));
}
bool bNotAllEventDriven = false;
foreach (Activity activity in listen.EnabledActivities)
{
if (!(activity is EventDrivenActivity))
{
bNotAllEventDriven = true;
}
}
// validate that all child activities are event driven activities.
if (bNotAllEventDriven)
{
validationErrors.Add(new ValidationError(SR.GetString(SR.Error_ListenNotAllEventDriven), ErrorNumbers.Error_ListenNotAllEventDriven));
}
return(validationErrors);
}
public override ValidationErrorCollection Validate(ValidationManager manager, object obj)
{
ValidationErrorCollection errors = new ValidationErrorCollection(base.Validate(manager, obj));
ListenActivity activity = obj as ListenActivity;
if (activity == null)
{
throw new ArgumentException(SR.GetString("Error_UnexpectedArgumentType", new object[] { typeof(ListenActivity).FullName }), "obj");
}
if (activity.EnabledActivities.Count < 2)
{
errors.Add(new ValidationError(SR.GetString("Error_ListenLessThanTwoChildren"), 0x513));
}
bool flag = false;
foreach (Activity activity2 in activity.EnabledActivities)
{
if (!(activity2 is EventDrivenActivity))
{
flag = true;
}
}
if (flag)
{
errors.Add(new ValidationError(SR.GetString("Error_ListenNotAllEventDriven"), 0x514));
}
return(errors);
}
protected override sealed void OnActivityChangeRemove(ActivityExecutionContext executionContext, Activity removedActivity)
{
if (executionContext == null)
{
throw new ArgumentNullException("executionContext");
}
if (removedActivity == null)
{
throw new ArgumentNullException("removedActivity");
}
ListenActivity listen = executionContext.Activity as ListenActivity;
if (listen.ExecutionStatus == ActivityExecutionStatus.Executing && listen.ActivityState != null && !listen.IsListenTrigerred)
{
EventDrivenActivity eda = removedActivity as EventDrivenActivity;
for (int i = 0; i < listen.ActivityState.Count; ++i)
{
ListenEventActivitySubscriber listenEventSubscriber = listen.ActivityState[i];
if (listenEventSubscriber.eventDrivenActivity.QualifiedName.Equals(eda.QualifiedName))
{
eda.EventActivity.Unsubscribe(executionContext, listenEventSubscriber);
listen.ActivityState.RemoveAt(i);
return;
}
}
}
else if (this.IsListenTrigerred && removedActivity.ExecutionStatus == ActivityExecutionStatus.Closed)
{
activeBranchRemoved = true;
}
}
protected override IComponent[] CreateComponentsCore(IDesignerHost designerHost)
{
CompositeActivity activity = new ListenActivity {
Activities = { new EventDrivenActivity(), new EventDrivenActivity() }
};
return(new IComponent[] { activity });
}
protected override IComponent[] CreateComponentsCore(IDesignerHost designerHost)
{
CompositeActivity listenActivity = new ListenActivity();
listenActivity.Activities.Add(new EventDrivenActivity());
listenActivity.Activities.Add(new EventDrivenActivity());
return((IComponent[])new IComponent[] { listenActivity });
}
protected sealed override void OnActivityChangeAdd(ActivityExecutionContext executionContext, Activity addedActivity)
{
if (executionContext == null)
{
throw new ArgumentNullException("executionContext");
}
if (addedActivity == null)
{
throw new ArgumentNullException("addedActivity");
}
ListenActivity activity = executionContext.Activity as ListenActivity;
if (((activity.ExecutionStatus == ActivityExecutionStatus.Executing) && (activity.ActivityState != null)) && !activity.IsListenTrigerred)
{
EventDrivenActivity eventDriven = addedActivity as EventDrivenActivity;
ListenEventActivitySubscriber parentEventHandler = new ListenEventActivitySubscriber(eventDriven);
eventDriven.EventActivity.Subscribe(executionContext, parentEventHandler);
activity.ActivityState.Insert(activity.EnabledActivities.IndexOf(addedActivity), parentEventHandler);
}
}
void IActivityEventListener <QueueEventArgs> .OnEvent(object sender, QueueEventArgs e)
{
if (sender == null)
{
throw new ArgumentNullException("sender");
}
if (e == null)
{
throw new ArgumentNullException("e");
}
ActivityExecutionContext context = sender as ActivityExecutionContext;
if (context == null)
{
throw new ArgumentException(SR.Error_SenderMustBeActivityExecutionContext, "sender");
}
ListenActivity parentActivity = context.Activity as ListenActivity;
if (!parentActivity.IsListenTrigerred && parentActivity.ExecutionStatus != ActivityExecutionStatus.Canceling && parentActivity.ExecutionStatus != ActivityExecutionStatus.Closed)
{
//Check whether it is still live in tree.
if (!parentActivity.EnabledActivities.Contains(eventDrivenActivity))//Activity is dynamically removed.
{
return;
}
parentActivity.IsListenTrigerred = true;
for (int i = 0; i < parentActivity.EnabledActivities.Count; ++i)
{
EventDrivenActivity eventDriven = parentActivity.EnabledActivities[i] as EventDrivenActivity;
ListenEventActivitySubscriber eventSubscriber = parentActivity.ActivityState[i];
eventDriven.EventActivity.Unsubscribe(context, eventSubscriber);
}
eventDrivenActivity.RegisterForStatusChange(Activity.ClosedEvent, parentActivity);
context.ExecuteActivity(eventDrivenActivity);
}
}
protected override sealed void OnActivityChangeAdd(ActivityExecutionContext executionContext, Activity addedActivity)
{
if (executionContext == null)
{
throw new ArgumentNullException("executionContext");
}
if (addedActivity == null)
{
throw new ArgumentNullException("addedActivity");
}
Debug.Assert(addedActivity is EventDrivenActivity, "Listen only contains EventDriven activities");
ListenActivity listen = executionContext.Activity as ListenActivity;
if (listen.ExecutionStatus == ActivityExecutionStatus.Executing && listen.ActivityState != null && !listen.IsListenTrigerred)
{
EventDrivenActivity eda = addedActivity as EventDrivenActivity;
ListenEventActivitySubscriber eventActivitySubscriber = new ListenEventActivitySubscriber(eda);
eda.EventActivity.Subscribe(executionContext, eventActivitySubscriber);
listen.ActivityState.Insert(listen.EnabledActivities.IndexOf(addedActivity), eventActivitySubscriber);
}
}