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73 lines
1.7 KiB
73 lines
1.7 KiB
4 weeks ago
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let flexSpec = require('./flex-spec')
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let Declaration = require('../declaration')
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class FlexDirection extends Declaration {
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/**
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* Use two properties for 2009 spec
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*/
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insert(decl, prefix, prefixes) {
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let spec
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;[spec, prefix] = flexSpec(prefix)
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if (spec !== 2009) {
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return super.insert(decl, prefix, prefixes)
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}
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let already = decl.parent.some(
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i =>
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i.prop === prefix + 'box-orient' || i.prop === prefix + 'box-direction'
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)
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if (already) {
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return undefined
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}
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let v = decl.value
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let orient, dir
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if (v === 'inherit' || v === 'initial' || v === 'unset') {
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orient = v
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dir = v
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} else {
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orient = v.includes('row') ? 'horizontal' : 'vertical'
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dir = v.includes('reverse') ? 'reverse' : 'normal'
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}
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let cloned = this.clone(decl)
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cloned.prop = prefix + 'box-orient'
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cloned.value = orient
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if (this.needCascade(decl)) {
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cloned.raws.before = this.calcBefore(prefixes, decl, prefix)
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}
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decl.parent.insertBefore(decl, cloned)
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cloned = this.clone(decl)
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cloned.prop = prefix + 'box-direction'
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cloned.value = dir
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if (this.needCascade(decl)) {
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cloned.raws.before = this.calcBefore(prefixes, decl, prefix)
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}
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return decl.parent.insertBefore(decl, cloned)
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}
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/**
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* Return property name by final spec
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*/
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normalize() {
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return 'flex-direction'
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}
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/**
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* Clean two properties for 2009 spec
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*/
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old(prop, prefix) {
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let spec
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;[spec, prefix] = flexSpec(prefix)
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if (spec === 2009) {
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return [prefix + 'box-orient', prefix + 'box-direction']
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} else {
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return super.old(prop, prefix)
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}
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}
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}
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FlexDirection.names = ['flex-direction', 'box-direction', 'box-orient']
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module.exports = FlexDirection
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