private static IEnumerable GetContainedActivities(CompositeActivity activity)
{
if (!activity.Enabled)
{
yield break;
}
foreach (Activity containedActivity in activity.Activities)
{
if (containedActivity is CompositeActivity && !Helpers.IsCustomActivity((CompositeActivity)containedActivity))
{
foreach (Activity nestedActivity in WebServiceActivityHelpers.GetContainedActivities((CompositeActivity)containedActivity))
{
if (nestedActivity.Enabled)
{
yield return(nestedActivity);
}
}
}
else
{
if (containedActivity.Enabled)
{
yield return(containedActivity);
}
}
}
yield break;
}
internal static IEnumerable GetSucceedingActivities(Activity startActivity)
{
Activity currentActivity = null;
Stack <Activity> activityStack = new Stack <Activity>();
activityStack.Push(startActivity);
while ((currentActivity = activityStack.Pop()) != null)
{
if (currentActivity is CompositeActivity && Helpers.IsCustomActivity((CompositeActivity)currentActivity))
{
break;
}
if (currentActivity.Parent != null)
{
bool pastCurrentActivity = false;
foreach (Activity siblingActivity in currentActivity.Parent.Activities)
{
if (siblingActivity == currentActivity)
{
pastCurrentActivity = true;
continue;
}
if (!pastCurrentActivity)
{
continue;
}
if (siblingActivity.Enabled)
{
if (siblingActivity is CompositeActivity && !Helpers.IsCustomActivity((CompositeActivity)siblingActivity))
{
foreach (Activity containedActivity in WebServiceActivityHelpers.GetContainedActivities((CompositeActivity)siblingActivity))
{
yield return(containedActivity);
}
}
else
{
yield return(siblingActivity);
}
}
}
}
activityStack.Push(currentActivity.Parent);
}
yield break;
}
internal static IEnumerable GetPreceedingActivities(Activity startActivity, bool crossOverLoop)
{
Activity currentActivity = null;
Stack <Activity> activityStack = new Stack <Activity>();
activityStack.Push(startActivity);
while ((currentActivity = activityStack.Pop()) != null)
{
if (currentActivity is CompositeActivity && Helpers.IsCustomActivity((CompositeActivity)currentActivity))
{
break;
}
if (currentActivity.Parent != null)
{
foreach (Activity siblingActivity in currentActivity.Parent.Activities)
{
//
if (siblingActivity == currentActivity && ((currentActivity.Parent is ParallelActivity && !Helpers.IsFrameworkActivity(currentActivity)) || (currentActivity.Parent is StateActivity && !Helpers.IsFrameworkActivity(currentActivity))))
{
continue;
}
//
if (currentActivity.Parent is IfElseActivity && !Helpers.IsFrameworkActivity(currentActivity))
{
continue;
}
//For Listen Case.
if (currentActivity.Parent is ListenActivity && !Helpers.IsFrameworkActivity(currentActivity))
{
continue;
}
// State Machine logic:
// If startActivity was in the InitialState, then
// there are no preceeding activities.
// Otherwise, we just return the parent state as
// the preceeding activity.
StateActivity currentState = currentActivity.Parent as StateActivity;
if (currentState != null)
{
StateActivity enclosingState = StateMachineHelpers.FindEnclosingState(startActivity);
//If we are at Initial State there is no preceeding above us.
if (StateMachineHelpers.IsInitialState(enclosingState))
{
yield break;
}
else
{
yield return(currentState);
}
}
if (siblingActivity == currentActivity)
{
break;
}
if (siblingActivity.Enabled)
{
if (siblingActivity is CompositeActivity && !Helpers.IsCustomActivity((CompositeActivity)siblingActivity) && (crossOverLoop || !IsLoopActivity(siblingActivity)))
{
foreach (Activity containedActivity in WebServiceActivityHelpers.GetContainedActivities((CompositeActivity)siblingActivity))
{
yield return(containedActivity);
}
}
else
{
yield return(siblingActivity);
}
}
}
}
if (!crossOverLoop && IsLoopActivity(currentActivity.Parent))
{
break;
}
else
{
activityStack.Push(currentActivity.Parent);
}
}
yield break;
}