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/**
* --------------------------------------------------------------------------
* Bootstrap (v4.0.0-beta): dom/selectorEngine.js
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* --------------------------------------------------------------------------
*/
// matches polyfill (see: https://mzl.la/2ikXneG)
let fnMatches = null
if (!Element.prototype.matches) {
fnMatches =
Element.prototype.msMatchesSelector ||
Element.prototype.webkitMatchesSelector
} else {
fnMatches = Element.prototype.matches
}
// closest polyfill (see: https://mzl.la/2vXggaI)
let fnClosest = null
if (!Element.prototype.closest) {
fnClosest = (element, selector) => {
let ancestor = element
if (!document.documentElement.contains(element)) {
return null
}
do {
if (fnMatches.call(ancestor, selector)) {
return ancestor
}
ancestor = ancestor.parentElement
} while (ancestor !== null)
return null
}
} else {
fnClosest = (element, selector) => {
return element.closest(selector)
}
}
const SelectorEngine = {
matches(element, selector) {
return fnMatches.call(element, selector)
},
find(selector) {
if (typeof selector !== 'string') {
return null
}
let selectorType = 'querySelectorAll'
if (selector.indexOf('#') === 0) {
selectorType = 'getElementById'
selector = selector.substr(1, selector.length)
}
return document[selectorType](selector)
},
closest(element, selector) {
return fnClosest(element, selector)
}
}
export default SelectorEngine
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