BeEvent<T extends Listener> Class
Manages a set of listeners for a particular event and notifies them when the event is raised. This class is usually instantiated inside of a container class and exposed as a property for others to subscribe via BeEvent.addListener.
Extended by
Methods
| Name | Description | |
|---|---|---|
| constructor<T extends Listener>(): BeEvent<T> | ||
| addListener(listener: T, scope?: any): () => void | Registers a Listener to be executed whenever this event is raised. | |
| addOnce(listener: T, scope?: any): () => void | Registers a callback function to be executed only once when the event is raised. | |
| clear(): void | Clear all Listeners from this BeEvent. | |
| has(listener: T, scope?: any): boolean | Determine whether this BeEvent has a specified listener registered. | |
| raiseEvent(...args: Parameters<T>): void | Raises the event by calling each registered listener with the supplied arguments. | |
| removeListener(listener: T, scope?: any): boolean | Un-register a previously registered listener. |
Properties
| Name | Type | Description | |
|---|---|---|---|
| numberOfListeners Accessor ReadOnly | number | The number of listeners currently subscribed to the event. |
Defined in
- core/bentley/src/BeEvent.ts Line 28
Last Updated: 20 June, 2023