43 lines
1002 B
JavaScript
43 lines
1002 B
JavaScript
let Declaration = require('../declaration')
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class WritingMode extends Declaration {
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insert(decl, prefix, prefixes) {
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if (prefix === '-ms-') {
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let cloned = this.set(this.clone(decl), prefix)
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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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let direction = 'ltr'
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decl.parent.nodes.forEach(i => {
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if (i.prop === 'direction') {
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if (i.value === 'rtl' || i.value === 'ltr') direction = i.value
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}
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})
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cloned.value = WritingMode.msValues[direction][decl.value] || decl.value
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return decl.parent.insertBefore(decl, cloned)
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}
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return super.insert(decl, prefix, prefixes)
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}
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}
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WritingMode.names = ['writing-mode']
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WritingMode.msValues = {
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ltr: {
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'horizontal-tb': 'lr-tb',
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'vertical-rl': 'tb-rl',
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'vertical-lr': 'tb-lr'
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},
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rtl: {
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'horizontal-tb': 'rl-tb',
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'vertical-rl': 'bt-rl',
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'vertical-lr': 'bt-lr'
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}
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}
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module.exports = WritingMode
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