export default class Events { static initialiseEventHandler(selectorElement, classInitialised, eventHandler) { document.querySelectorAll(selectorElement).forEach(function(element) { if (element.classList.contains(classInitialised)) return; eventHandler(element); element.classList.add(classInitialised); }); } static hookupEventHandler(eventType, selector, callback) { Events.initialiseEventHandler(selector, flagInitialised, (element) => { element.addEventListener(eventType, (event) => { event.stopPropagation(); callback(event, element); }); }); } }