display-flex.js
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let flexSpec = require('./flex-spec')
let OldValue = require('../old-value')
let Value = require('../value')
class DisplayFlex extends Value {
constructor(name, prefixes) {
super(name, prefixes)
if (name === 'display-flex') {
this.name = 'flex'
}
}
/**
* Faster check for flex value
*/
check(decl) {
return decl.prop === 'display' && decl.value === this.name
}
/**
* Return value by spec
*/
prefixed(prefix) {
let spec, value
;[spec, prefix] = flexSpec(prefix)
if (spec === 2009) {
if (this.name === 'flex') {
value = 'box'
} else {
value = 'inline-box'
}
} else if (spec === 2012) {
if (this.name === 'flex') {
value = 'flexbox'
} else {
value = 'inline-flexbox'
}
} else if (spec === 'final') {
value = this.name
}
return prefix + value
}
/**
* Add prefix to value depend on flebox spec version
*/
replace(string, prefix) {
return this.prefixed(prefix)
}
/**
* Change value for old specs
*/
old(prefix) {
let prefixed = this.prefixed(prefix)
if (!prefixed) return undefined
return new OldValue(this.name, prefixed)
}
}
DisplayFlex.names = ['display-flex', 'inline-flex']
module.exports = DisplayFlex