/// <inheritdoc />
public override bool Evaluate()
{
if (_disposed)
{
throw new ObjectDisposedException("DataModelConditionEvent");
}
if (EventPath?.GetValue() is not IDataModelEvent dataModelEvent)
{
return(false);
}
// Only evaluate to true once every time the event has been triggered since the last evaluation
if (dataModelEvent.LastTrigger <= LastTrigger)
{
return(false);
}
LastTrigger = DateTime.Now;
// If there is a child (root group), it must evaluate to true whenever the event triggered
if (Children.Any())
{
return(Children[0].EvaluateObject(dataModelEvent.LastEventArgumentsUntyped));
}
// If there are no children, we always evaluate to true whenever the event triggered
return(true);
}
/// <summary>
/// Returns the <see cref="IDataModelEvent" /> this <see cref="DataModelConditionEvent" /> is triggered by
/// </summary>
/// <returns>The <see cref="IDataModelEvent" /> this <see cref="DataModelConditionEvent" /> is triggered by</returns>
public IDataModelEvent?GetDataModelEvent()
{
if (_valueChangedEvent != null)
{
return(_valueChangedEvent);
}
return(EventPath?.GetValue() as IDataModelEvent);
}
internal void Initialize()
{
ClearChildren();
if (Entity.EventPath == null)
{
return;
}
// Ensure the list path is valid and points to a list
DataModelPath eventPath = new(null, Entity.EventPath);
// Can't check this on an invalid list, if it becomes valid later lets hope for the best
if (eventPath.IsValid && !PointsToEvent(eventPath))
{
return;
}
EventPath = eventPath;
SubscribeToEventPath();
EventArgumentType = GetEventArgumentType();
// There should only be one child and it should be a group
if (Entity.Children.FirstOrDefault() is DataModelConditionGroupEntity rootGroup)
{
AddChild(new DataModelConditionGroup(this, rootGroup));
}
else
{
Entity.Children.Clear();
AddChild(new DataModelConditionGroup(this));
}
if (EventPath?.GetValue() is IDataModelEvent dataModelEvent)
{
LastTrigger = dataModelEvent.LastTrigger;
}
}