/// <summary>
/// Called when the activity is dragged onto the design surface
/// </summary>
/// <remarks>
/// Here I construct two child activities as well as the FlagsActivity.
/// </remarks>
/// <param name="host"></param>
/// <returns></returns>
protected override IComponent[] CreateComponentsCore(IDesignerHost host)
{
CompositeActivity parent = new DaysOfWeekActivity();
parent.Activities.Add(new SequenceActivity());
parent.Activities.Add(new SequenceActivity());
return(new IComponent[] { parent });
}
public void SetWeekday(Activity activity, WeekdayEnum weekday)
{
Activity parent = activity.Parent;
if ((null != parent) && (parent is DaysOfWeekActivity))
{
DaysOfWeekActivity.SetWeekday(activity, weekday);
}
}
public WeekdayEnum GetWeekday(Activity activity)
{
WeekdayEnum weekday = WeekdayEnum.None;
Activity parent = activity.Parent;
if ((null != parent) && (parent is DaysOfWeekActivity))
{
weekday = (WeekdayEnum)DaysOfWeekActivity.GetWeekday(activity);
}
return(weekday);
}
/// <summary>
/// An activity has been added - hookup to that activites Closed event
/// </summary>
/// <param name="executionContext"></param>
/// <param name="addedActivity"></param>
protected override void OnActivityChangeAdd(ActivityExecutionContext executionContext, Activity addedActivity)
{
if (null == executionContext)
{
throw new ArgumentNullException("executionContext");
}
if (null == addedActivity)
{
throw new ArgumentNullException("addedActivity");
}
DaysOfWeekActivity act = executionContext.Activity as DaysOfWeekActivity;
if ((act.ExecutionStatus == ActivityExecutionStatus.Executing) && act.IsExecuting)
{
addedActivity.RegisterForStatusChange(Activity.ClosedEvent, this);
executionContext.ExecuteActivity(addedActivity);
}
}
/// <summary>
/// Respond to status changes on child activities
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void IActivityEventListener <ActivityExecutionStatusChangedEventArgs> .OnEvent(object sender, ActivityExecutionStatusChangedEventArgs e)
{
if (null == sender)
{
throw new ArgumentNullException("sender");
}
if (null == e)
{
throw new ArgumentNullException("e");
}
ActivityExecutionContext context = sender as ActivityExecutionContext;
if (null == context)
{
throw new ArgumentException("No execution context is available");
}
DaysOfWeekActivity act = context.Activity as DaysOfWeekActivity;
e.Activity.UnregisterForStatusChange(Activity.ClosedEvent, this);
bool canClose = true;
for (int pos = 0; pos < act.EnabledActivities.Count; pos++)
{
Activity childAct = act.EnabledActivities[pos];
if ((childAct.ExecutionStatus != ActivityExecutionStatus.Initialized) && (childAct.ExecutionStatus != ActivityExecutionStatus.Closed))
{
canClose = false;
break;
}
}
if (canClose)
{
context.CloseActivity();
}
}