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| /* Define event listeners to work with */ | |
| const isTouch = | |
| typeof window !== 'undefined' | |
| && ('ontouchstart' in window || navigator.msMaxTouchPoints > 0); | |
| const events = isTouch | |
| ? ['touchstart', 'click'] | |
| : ['click']; | |
| /* End of events definition */ | |
| const instances = []; | |
| //1. | |
| function onClickOutside({ event, el, handler }) { | |
| const isClickOutside = | |
| event.target !== el | |
| && !el.contains(event.target); | |
| return isClickOutside ? handler(event, el) : null; | |
| } | |
| //2. | |
| document.addEventListener('click', (event) => onClickOutside({ event })) | |
| //3. | |
| const instances = []; | |
| //4. | |
| function bind(el, { value: handler }) { | |
| //5. | |
| const instance = { | |
| el, | |
| eventHandlers: eventAdapter(events), | |
| }; | |
| //6. | |
| toggleEventListeners(instance); | |
| instances.push(instance); | |
| } | |
| function update(el, { value }) { | |
| //7. | |
| const instance = instances.find(item => item.el === el); | |
| //8. | |
| removeIstanceListeners(instance); | |
| //9. | |
| instance.eventHandlers = eventAdapter(events) | |
| //10. | |
| toggleEventListeners(instance, 'add'); | |
| } | |
| function unbind(el) { | |
| const instance = instances.find(item => item.el === el); | |
| toggleEventListeners(instance, 'remove'); | |
| } | |
| function processArgs(value) { | |
| } | |
| function toggleEventListeners(instance, action) { | |
| instance.eventHandlers.forEach(({ event, handler }) => | |
| document[`${action}EventListener`](event, handler), | |
| ); | |
| } | |
| function eventAdapter(events) { | |
| return events.map((eventName) => ({ | |
| event: eventName, | |
| handler: (event) => onEvent({ event, el, handler, middleware }) | |
| })); | |
| } | |
| const directive = { | |
| bind, | |
| update, | |
| unbind, | |
| }; | |
| export default directive; |
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