| let list = require('postcss').list | |
| let flexSpec = require('./flex-spec') | |
| let Declaration = require('../declaration') | |
| class Flex extends Declaration { | |
| /** | |
| * Return property name by final spec | |
| */ | |
| normalize() { | |
| return 'flex' | |
| } | |
| /** | |
| * Change property name for 2009 spec | |
| */ | |
| prefixed(prop, prefix) { | |
| let spec | |
| ;[spec, prefix] = flexSpec(prefix) | |
| if (spec === 2009) { | |
| return prefix + 'box-flex' | |
| } | |
| return super.prefixed(prop, prefix) | |
| } | |
| /** | |
| * Spec 2009 supports only first argument | |
| * Spec 2012 disallows unitless basis | |
| */ | |
| set(decl, prefix) { | |
| let spec = flexSpec(prefix)[0] | |
| if (spec === 2009) { | |
| decl.value = list.space(decl.value)[0] | |
| decl.value = Flex.oldValues[decl.value] || decl.value | |
| return super.set(decl, prefix) | |
| } | |
| if (spec === 2012) { | |
| let components = list.space(decl.value) | |
| if (components.length === 3 && components[2] === '0') { | |
| decl.value = components.slice(0, 2).concat('0px').join(' ') | |
| } | |
| } | |
| return super.set(decl, prefix) | |
| } | |
| } | |
| Flex.names = ['flex', 'box-flex'] | |
| Flex.oldValues = { | |
| auto: '1', | |
| none: '0' | |
| } | |
| module.exports = Flex | |