justify-content.js
1.21 KB
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let flexSpec = require('./flex-spec')
let Declaration = require('../declaration')
class JustifyContent extends Declaration {
/**
* Change property name for 2009 and 2012 specs
*/
prefixed(prop, prefix) {
let spec
;[spec, prefix] = flexSpec(prefix)
if (spec === 2009) {
return prefix + 'box-pack'
}
if (spec === 2012) {
return prefix + 'flex-pack'
}
return super.prefixed(prop, prefix)
}
/**
* Return property name by final spec
*/
normalize() {
return 'justify-content'
}
/**
* Change value for 2009 and 2012 specs
*/
set(decl, prefix) {
let spec = flexSpec(prefix)[0]
if (spec === 2009 || spec === 2012) {
let value = JustifyContent.oldValues[decl.value] || decl.value
decl.value = value
if (spec !== 2009 || value !== 'distribute') {
return super.set(decl, prefix)
}
} else if (spec === 'final') {
return super.set(decl, prefix)
}
return undefined
}
}
JustifyContent.names = ['justify-content', 'flex-pack', 'box-pack']
JustifyContent.oldValues = {
'flex-end': 'end',
'flex-start': 'start',
'space-between': 'justify',
'space-around': 'distribute'
}
module.exports = JustifyContent