BlackboardMenuAttribute

Description

Marks a static method as a contributor to the blackboard's right-click contextual menu. Every time the menu opens, the decorated method is invoked with a context that exposes the element under the cursor and lets the method append entries via MenuContext.AppendAction.

The decorated method must be static, return void, and take a single context parameter. The type passed to the constructor decides which context type: a Graph subclass requires a GraphMenuContext parameter, a StateMachine subclass requires a StateMachineMenuContext parameter. The user is responsible for filtering on the clicked element and deciding what to append. The handler is invoked when the active graph or state machine's type matches the listed type or derives from it. Apply the attribute multiple times on the same method to register it for several types, as long as they all require the same context type. MenuContext.ClickedObject is the clicked IVariable, or null when the click landed on empty space in the blackboard.

 [BlackboardMenu(typeof(MyGraph))]
 static void AppendNewItems(GraphMenuContext context)
 {
     if (context.ClickedObject is IVariable variable)
     {
         context.AppendAction("Int/Reset", () => Debug.Log(variable));
     }
 }

Properties

Constructors