public static IDisposable OnAction(this object target, Action <ISerializedActionCall> listener, bool attachAfter = true)
{
if (!target.IsStateTreeNode())
{
throw new InvalidOperationException("Can not listen for action on Non State Tree Node");
}
void FireListener(IMiddlewareEvent call)
{
if (call.Type == MiddlewareEventType.Action && call.Id == call.RootId)
{
var source = call.Context.GetStateTreeNode();
var data = new SerializedActionCall
{
Name = call.Name,
Path = StateTreeUtils.GetRelativePathBetweenNodes(target.GetStateTreeNode(), source),
//TODO: serialize arguments
Arguments = call.Arguments.ToArray()
};
listener(data);
}
}
Action <IMiddlewareEvent, Action <IMiddlewareEvent, Func <object, object> >, Action <object> > onAfterAction = (IMiddlewareEvent call, Action <IMiddlewareEvent, Func <object, object> > next, Action <object> action) =>
{
next(call, null);
FireListener(call);
};
Action <IMiddlewareEvent, Action <IMiddlewareEvent, Func <object, object> >, Action <object> > onBeforeAction = (IMiddlewareEvent call, Action <IMiddlewareEvent, Func <object, object> > next, Action <object> action) =>
{
FireListener(call);
next(call, null);
};
return(StateTreeAction.AddMiddleware(target.GetStateTree(), attachAfter ? onAfterAction : onBeforeAction));
}
public static string GetRelativePath(this object target, object relative)
{
return(StateTreeUtils.GetRelativePathBetweenNodes(target.GetStateTreeNode(), relative.GetStateTreeNode()));
}
