80 lines
1.6 KiB
JavaScript
80 lines
1.6 KiB
JavaScript
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let Declaration = require('../declaration')
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class TransformDecl extends Declaration {
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/**
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* Recursively check all parents for @keyframes
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*/
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keyframeParents (decl) {
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let { parent } = decl
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while (parent) {
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if (parent.type === 'atrule' && parent.name === 'keyframes') {
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return true
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}
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;({ parent } = parent)
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}
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return false
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}
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/**
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* Is transform contain 3D commands
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*/
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contain3d (decl) {
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if (decl.prop === 'transform-origin') {
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return false
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}
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for (let func of TransformDecl.functions3d) {
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if (decl.value.includes(`${func}(`)) {
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return true
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}
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}
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return false
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}
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/**
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* Replace rotateZ to rotate for IE 9
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*/
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set (decl, prefix) {
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decl = super.set(decl, prefix)
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if (prefix === '-ms-') {
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decl.value = decl.value.replace(/rotatez/gi, 'rotate')
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}
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return decl
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}
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/**
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* Don't add prefix for IE in keyframes
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*/
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insert (decl, prefix, prefixes) {
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if (prefix === '-ms-') {
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if (!this.contain3d(decl) && !this.keyframeParents(decl)) {
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return super.insert(decl, prefix, prefixes)
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}
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} else if (prefix === '-o-') {
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if (!this.contain3d(decl)) {
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return super.insert(decl, prefix, prefixes)
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}
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} else {
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return super.insert(decl, prefix, prefixes)
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}
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return undefined
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}
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}
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TransformDecl.names = ['transform', 'transform-origin']
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TransformDecl.functions3d = [
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'matrix3d',
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'translate3d',
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'translateZ',
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'scale3d',
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'scaleZ',
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'rotate3d',
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'rotateX',
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'rotateY',
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'perspective'
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]
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module.exports = TransformDecl
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