UNPKG

2.09 kBJavaScriptView Raw
1//.CommonJS
2var CSSOM = {
3 CSSStyleSheet: require("./CSSStyleSheet").CSSStyleSheet,
4 CSSRule: require("./CSSRule").CSSRule,
5 CSSStyleRule: require("./CSSStyleRule").CSSStyleRule,
6 CSSGroupingRule: require("./CSSGroupingRule").CSSGroupingRule,
7 CSSConditionRule: require("./CSSConditionRule").CSSConditionRule,
8 CSSMediaRule: require("./CSSMediaRule").CSSMediaRule,
9 CSSSupportsRule: require("./CSSSupportsRule").CSSSupportsRule,
10 CSSStyleDeclaration: require("./CSSStyleDeclaration").CSSStyleDeclaration,
11 CSSKeyframeRule: require('./CSSKeyframeRule').CSSKeyframeRule,
12 CSSKeyframesRule: require('./CSSKeyframesRule').CSSKeyframesRule
13};
14///CommonJS
15
16
17/**
18 * Produces a deep copy of stylesheet — the instance variables of stylesheet are copied recursively.
19 * @param {CSSStyleSheet|CSSOM.CSSStyleSheet} stylesheet
20 * @nosideeffects
21 * @return {CSSOM.CSSStyleSheet}
22 */
23CSSOM.clone = function clone(stylesheet) {
24
25 var cloned = new CSSOM.CSSStyleSheet();
26
27 var rules = stylesheet.cssRules;
28 if (!rules) {
29 return cloned;
30 }
31
32 for (var i = 0, rulesLength = rules.length; i < rulesLength; i++) {
33 var rule = rules[i];
34 var ruleClone = cloned.cssRules[i] = new rule.constructor();
35
36 var style = rule.style;
37 if (style) {
38 var styleClone = ruleClone.style = new CSSOM.CSSStyleDeclaration();
39 for (var j = 0, styleLength = style.length; j < styleLength; j++) {
40 var name = styleClone[j] = style[j];
41 styleClone[name] = style[name];
42 styleClone._importants[name] = style.getPropertyPriority(name);
43 }
44 styleClone.length = style.length;
45 }
46
47 if (rule.hasOwnProperty('keyText')) {
48 ruleClone.keyText = rule.keyText;
49 }
50
51 if (rule.hasOwnProperty('selectorText')) {
52 ruleClone.selectorText = rule.selectorText;
53 }
54
55 if (rule.hasOwnProperty('mediaText')) {
56 ruleClone.mediaText = rule.mediaText;
57 }
58
59 if (rule.hasOwnProperty('conditionText')) {
60 ruleClone.conditionText = rule.conditionText;
61 }
62
63 if (rule.hasOwnProperty('cssRules')) {
64 ruleClone.cssRules = clone(rule).cssRules;
65 }
66 }
67
68 return cloned;
69
70};
71
72//.CommonJS
73exports.clone = CSSOM.clone;
74///CommonJS