forked from rDrama/rDrama
151 lines
3.1 KiB
JavaScript
151 lines
3.1 KiB
JavaScript
let { list } = require('postcss')
|
|
|
|
let OldSelector = require('./old-selector')
|
|
let Prefixer = require('./prefixer')
|
|
let Browsers = require('./browsers')
|
|
let utils = require('./utils')
|
|
|
|
class Selector extends Prefixer {
|
|
constructor(name, prefixes, all) {
|
|
super(name, prefixes, all)
|
|
this.regexpCache = new Map()
|
|
}
|
|
|
|
/**
|
|
* Is rule selectors need to be prefixed
|
|
*/
|
|
check(rule) {
|
|
if (rule.selector.includes(this.name)) {
|
|
return !!rule.selector.match(this.regexp())
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
/**
|
|
* Return prefixed version of selector
|
|
*/
|
|
prefixed(prefix) {
|
|
return this.name.replace(/^(\W*)/, `$1${prefix}`)
|
|
}
|
|
|
|
/**
|
|
* Lazy loadRegExp for name
|
|
*/
|
|
regexp(prefix) {
|
|
if (!this.regexpCache.has(prefix)) {
|
|
let name = prefix ? this.prefixed(prefix) : this.name
|
|
this.regexpCache.set(
|
|
prefix,
|
|
new RegExp(`(^|[^:"'=])${utils.escapeRegexp(name)}`, 'gi')
|
|
)
|
|
}
|
|
|
|
return this.regexpCache.get(prefix)
|
|
}
|
|
|
|
/**
|
|
* All possible prefixes
|
|
*/
|
|
possible() {
|
|
return Browsers.prefixes()
|
|
}
|
|
|
|
/**
|
|
* Return all possible selector prefixes
|
|
*/
|
|
prefixeds(rule) {
|
|
if (rule._autoprefixerPrefixeds) {
|
|
if (rule._autoprefixerPrefixeds[this.name]) {
|
|
return rule._autoprefixerPrefixeds
|
|
}
|
|
} else {
|
|
rule._autoprefixerPrefixeds = {}
|
|
}
|
|
|
|
let prefixeds = {}
|
|
if (rule.selector.includes(',')) {
|
|
let ruleParts = list.comma(rule.selector)
|
|
let toProcess = ruleParts.filter(el => el.includes(this.name))
|
|
|
|
for (let prefix of this.possible()) {
|
|
prefixeds[prefix] = toProcess
|
|
.map(el => this.replace(el, prefix))
|
|
.join(', ')
|
|
}
|
|
} else {
|
|
for (let prefix of this.possible()) {
|
|
prefixeds[prefix] = this.replace(rule.selector, prefix)
|
|
}
|
|
}
|
|
|
|
rule._autoprefixerPrefixeds[this.name] = prefixeds
|
|
return rule._autoprefixerPrefixeds
|
|
}
|
|
|
|
/**
|
|
* Is rule already prefixed before
|
|
*/
|
|
already(rule, prefixeds, prefix) {
|
|
let index = rule.parent.index(rule) - 1
|
|
|
|
while (index >= 0) {
|
|
let before = rule.parent.nodes[index]
|
|
|
|
if (before.type !== 'rule') {
|
|
return false
|
|
}
|
|
|
|
let some = false
|
|
for (let key in prefixeds[this.name]) {
|
|
let prefixed = prefixeds[this.name][key]
|
|
if (before.selector === prefixed) {
|
|
if (prefix === key) {
|
|
return true
|
|
} else {
|
|
some = true
|
|
break
|
|
}
|
|
}
|
|
}
|
|
if (!some) {
|
|
return false
|
|
}
|
|
|
|
index -= 1
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
/**
|
|
* Replace selectors by prefixed one
|
|
*/
|
|
replace(selector, prefix) {
|
|
return selector.replace(this.regexp(), `$1${this.prefixed(prefix)}`)
|
|
}
|
|
|
|
/**
|
|
* Clone and add prefixes for at-rule
|
|
*/
|
|
add(rule, prefix) {
|
|
let prefixeds = this.prefixeds(rule)
|
|
|
|
if (this.already(rule, prefixeds, prefix)) {
|
|
return
|
|
}
|
|
|
|
let cloned = this.clone(rule, { selector: prefixeds[this.name][prefix] })
|
|
rule.parent.insertBefore(rule, cloned)
|
|
}
|
|
|
|
/**
|
|
* Return function to fast find prefixed selector
|
|
*/
|
|
old(prefix) {
|
|
return new OldSelector(this, prefix)
|
|
}
|
|
}
|
|
|
|
module.exports = Selector
|