Function eventScope

src/utils/event-hub.ts:42–67

(scrollbar: Scrollbar)

}

export function eventScope(scrollbar: Scrollbar) {
  const configs = eventMap.get(scrollbar) || [];

  eventMap.set(scrollbar, configs);

  return function addEvent(
    elem: EventTarget,
    events: string,
    fn: EventHandler,
   ) {
    function handler(event: any) {
      // ignore default prevented events
      if (event.defaultPrevented) {
        return;
      }

      fn(event);
    }

    events.split(/\s+/g).forEach((eventName) => {
      configs.push({ elem, eventName, handler });

      elem.addEventListener(eventName, handler, getOptions());
    });
  };
}

export function clearEventsOn(scrollbar: Scrollbar) {
  const configs = eventMap.get(scrollbar);