flex-direction.js
1.75 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
let flexSpec = require('./flex-spec')
let Declaration = require('../declaration')
class FlexDirection extends Declaration {
/**
* Return property name by final spec
*/
normalize() {
return 'flex-direction'
}
/**
* Use two properties for 2009 spec
*/
insert(decl, prefix, prefixes) {
let spec
;[spec, prefix] = flexSpec(prefix)
if (spec !== 2009) {
return super.insert(decl, prefix, prefixes)
}
let already = decl.parent.some(
i =>
i.prop === prefix + 'box-orient' || i.prop === prefix + 'box-direction'
)
if (already) {
return undefined
}
let v = decl.value
let orient, dir
if (v === 'inherit' || v === 'initial' || v === 'unset') {
orient = v
dir = v
} else {
orient = v.includes('row') ? 'horizontal' : 'vertical'
dir = v.includes('reverse') ? 'reverse' : 'normal'
}
let cloned = this.clone(decl)
cloned.prop = prefix + 'box-orient'
cloned.value = orient
if (this.needCascade(decl)) {
cloned.raws.before = this.calcBefore(prefixes, decl, prefix)
}
decl.parent.insertBefore(decl, cloned)
cloned = this.clone(decl)
cloned.prop = prefix + 'box-direction'
cloned.value = dir
if (this.needCascade(decl)) {
cloned.raws.before = this.calcBefore(prefixes, decl, prefix)
}
return decl.parent.insertBefore(decl, cloned)
}
/**
* Clean two properties for 2009 spec
*/
old(prop, prefix) {
let spec
;[spec, prefix] = flexSpec(prefix)
if (spec === 2009) {
return [prefix + 'box-orient', prefix + 'box-direction']
} else {
return super.old(prop, prefix)
}
}
}
FlexDirection.names = ['flex-direction', 'box-direction', 'box-orient']
module.exports = FlexDirection