ce4c83ff
 wxy
初始提交
|
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
73
74
75
76
77
78
79
80
81
82
83
84
85
|
'use strict';
exports.__esModule = true;
var _postcss = require('postcss');
var _postcssValueParser = require('postcss-value-parser');
var _stylehacks = require('stylehacks');
var _genericMerge = require('../genericMerge');
var _getValue = require('../getValue');
var _getValue2 = _interopRequireDefault(_getValue);
var _insertCloned = require('../insertCloned');
var _insertCloned2 = _interopRequireDefault(_insertCloned);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var properties = ['column-width', 'column-count'];
var auto = 'auto';
/**
* Normalize a columns shorthand definition. Both of the longhand
* properties' initial values are 'auto', and as per the spec,
* omitted values are set to their initial values. Thus, we can
* remove any 'auto' definition when there are two values.
*
* Specification link: https://www.w3.org/TR/css3-multicol/
*/
function normalize(values) {
if (values[0] === auto) {
return values[1];
}
if (values[1] === auto) {
return values[0];
}
return values.join(' ');
}
function explode(rule) {
if (rule.nodes.some(_stylehacks.detect)) {
return false;
}
rule.walkDecls('columns', function (decl) {
var values = _postcss.list.space(decl.value);
if (values.length === 1) {
values.push(auto);
}
values.forEach(function (value, i) {
var prop = properties[1];
if (value === auto) {
prop = properties[i];
} else if ((0, _postcssValueParser.unit)(value).unit) {
prop = properties[0];
}
(0, _insertCloned2.default)(rule, decl, {
prop: prop,
value: value
});
});
decl.remove();
});
}
var merge = (0, _genericMerge.genericMergeFactory)({
prop: 'columns',
properties: properties,
value: function value(rules) {
return normalize(rules.map(_getValue2.default));
}
});
exports.default = {
explode: explode,
merge: merge
};
module.exports = exports['default'];
|
