API Reference > presentation-frontend > UnifiedSelection > SelectionChangeEvent SelectionChangeEvent Class An event broadcasted on selection changes Extends BeEvent<SelectionChangesListener> Methods Name Description constructor(): SelectionChangeEvent Inherited methods Name Inherited from Description addListener(listener: SelectionChangesListener, scope?: any): () => void BeEvent Registers a Listener to be executed whenever this event is raised. addOnce(listener: SelectionChangesListener, scope?: any): () => void BeEvent Registers a callback function to be executed only once when the event is raised. clear(): void BeEvent Clear all Listeners from this BeEvent. has(listener: SelectionChangesListener, scope?: any): boolean BeEvent Determine whether this BeEvent has a specified listener registered. raiseEvent(...args: [args, provider]): void BeEvent Raises the event by calling each registered listener with the supplied arguments. removeListener(listener: SelectionChangesListener, scope?: any): boolean BeEvent Un-register a previously registered listener. Inherited properties Name Type Inherited from Description numberOfListeners Accessor ReadOnly number BeEvent The number of listeners currently subscribed to the event. Defined in presentation/frontend/src/presentation-frontend/selection/SelectionChangeEvent.ts Line 24 Last Updated: 12 June, 2024