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|
/**
* --------------------------------------------------------------------------
* Bootstrap (v4.3.1): dom/selectorEngine.js
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* --------------------------------------------------------------------------
*/
import Polyfill from './polyfill'
import {
makeArray
} from '../util/index'
/**
* ------------------------------------------------------------------------
* Constants
* ------------------------------------------------------------------------
*/
const findFn = Polyfill.find
const findOne = Polyfill.findOne
const NODE_TEXT = 3
const SelectorEngine = {
matches(element, selector) {
return element.matches(selector)
},
find(selector, element = document.documentElement) {
if (typeof selector !== 'string') {
return null
}
return findFn.call(element, selector)
},
findOne(selector, element = document.documentElement) {
if (typeof selector !== 'string') {
return null
}
return findOne.call(element, selector)
},
children(element, selector) {
if (typeof selector !== 'string') {
return null
}
const children = makeArray(element.children)
return children.filter((child) => this.matches(child, selector))
},
parents(element, selector) {
if (typeof selector !== 'string') {
return null
}
const parents = []
let ancestor = element.parentNode
while (ancestor && ancestor.nodeType === Node.ELEMENT_NODE && ancestor.nodeType !== NODE_TEXT) {
if (this.matches(ancestor, selector)) {
parents.push(ancestor)
}
ancestor = ancestor.parentNode
}
return parents
},
closest(element, selector) {
if (typeof selector !== 'string') {
return null
}
return element.closest(selector)
},
prev(element, selector) {
if (typeof selector !== 'string') {
return null
}
const siblings = []
let previous = element.previousSibling
while (previous && previous.nodeType === Node.ELEMENT_NODE && previous.nodeType !== NODE_TEXT) {
if (this.matches(previous, selector)) {
siblings.push(previous)
}
previous = previous.previousSibling
}
return siblings
}
}
export default SelectorEngine
|
