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✨ Custom directive for long-press events (#586)
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/** | ||
* A Vue directive to call event when element is long-pressed | ||
* Used to open context menus on touch-enabled devices | ||
* Inspired by: FeliciousX/vue-directive-long-press | ||
* Dashy: Licensed under MIT - (C) Alicia Sykes 2022 | ||
*/ | ||
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const LONG_PRESS_DEFAULT_DELAY = 750; | ||
const longPressEvent = new CustomEvent('long-press'); | ||
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export default { | ||
bind(element, binding, vnode) { | ||
const el = element; | ||
el.dataset.longPressTimeout = null; | ||
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const swallowClick = (e) => { | ||
el.removeEventListener('click', swallowClick); | ||
if (!el.dataset.elapsed) return true; | ||
e.preventDefault(); | ||
e.stopPropagation(); | ||
return false; | ||
}; | ||
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const complete = () => { | ||
if (vnode.componentInstance) vnode.componentInstance.$emit('long-press'); | ||
else el.dispatchEvent(longPressEvent); | ||
el.dataset.elapsed = true; | ||
}; | ||
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const onPointerUp = () => { | ||
clearTimeout(parseInt(el.dataset.longPressTimeout, 10)); | ||
document.removeEventListener('pointerup', onPointerUp); | ||
}; | ||
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const onPointerDown = () => { | ||
document.addEventListener('pointerup', onPointerUp); | ||
el.addEventListener('click', swallowClick); | ||
const timeoutDuration = binding.value || LONG_PRESS_DEFAULT_DELAY; | ||
const timeout = setTimeout(complete, timeoutDuration); | ||
el.dataset.elapsed = false; | ||
el.dataset.longPressTimeout = timeout; | ||
}; | ||
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el.$longPressHandler = onPointerDown; | ||
el.addEventListener('pointerdown', onPointerDown); | ||
}, | ||
unbind(el) { | ||
clearTimeout(parseInt(el.dataset.longPressTimeout, 10)); | ||
el.removeEventListener('pointerdown', el.$longPressHandler); | ||
}, | ||
}; |