Class EventManager

src/web-ui/src/shared/utils/eventManager.ts:31–215

 
export class EventManager implements EventManagerInterface {
  private listeners: Map<string, EventListener[]> = new Map();
  private executionCounts: Map<string, Map<EventCallback, number>> = new Map();
  private readonly debugMode: boolean;

  constructor(debugMode: boolean = false) {
    this.debugMode = debugMode;
  }

   
  on<T = any>(event: string, callback: EventCallback<T>, options: EventListenerOptions = {}): () => void {
    const listener: EventListener<T> = {
      callback,
      once: false,
      priority: options.priority ?? 0
    };

    if (this.debugMode) {
      log.debug('Registering event listener', { event });
    }

    if (!this.listeners.has(event)) {
      this.listeners.set(event, []);
    }

    const eventListeners = this.listeners.get(event)!;
    eventListeners.push(listener);
    
    
    eventListeners.sort((a, b) => b.priority - a.priority);

    
    if (options.maxExecutions) {
      if (!this.executionCounts.has(event)) {
        this.executionCounts.set(event, new Map());
      }
      this.executionCounts.get(event)!.set(callback, 0);
    }


    
    return () => this.off(event, callback);
  }

   
  once<T = any>(event: string, callback: EventCallback<T>, options: EventListenerOptions = {}): () => void {
    const listener: EventListener<T> = {
      callback,
      once: true,
      priority: options.priority ?? 0
    };

    if (!this.listeners.has(event)) {
      this.listeners.set(event, []);
    }

    const eventListeners = this.listeners.get(event)!;
    eventListeners.push(listener);