clone.js
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//.CommonJS
var CSSOM = {
CSSStyleSheet: require("./CSSStyleSheet").CSSStyleSheet,
CSSStyleRule: require("./CSSStyleRule").CSSStyleRule,
CSSMediaRule: require("./CSSMediaRule").CSSMediaRule,
CSSSupportsRule: require("./CSSSupportsRule").CSSSupportsRule,
CSSStyleDeclaration: require("./CSSStyleDeclaration").CSSStyleDeclaration,
CSSKeyframeRule: require('./CSSKeyframeRule').CSSKeyframeRule,
CSSKeyframesRule: require('./CSSKeyframesRule').CSSKeyframesRule
};
///CommonJS
/**
* Produces a deep copy of stylesheet — the instance variables of stylesheet are copied recursively.
* @param {CSSStyleSheet|CSSOM.CSSStyleSheet} stylesheet
* @nosideeffects
* @return {CSSOM.CSSStyleSheet}
*/
CSSOM.clone = function clone(stylesheet) {
var cloned = new CSSOM.CSSStyleSheet();
var rules = stylesheet.cssRules;
if (!rules) {
return cloned;
}
var RULE_TYPES = {
1: CSSOM.CSSStyleRule,
4: CSSOM.CSSMediaRule,
//3: CSSOM.CSSImportRule,
//5: CSSOM.CSSFontFaceRule,
//6: CSSOM.CSSPageRule,
8: CSSOM.CSSKeyframesRule,
9: CSSOM.CSSKeyframeRule,
12: CSSOM.CSSSupportsRule
};
for (var i=0, rulesLength=rules.length; i < rulesLength; i++) {
var rule = rules[i];
var ruleClone = cloned.cssRules[i] = new RULE_TYPES[rule.type]();
var style = rule.style;
if (style) {
var styleClone = ruleClone.style = new CSSOM.CSSStyleDeclaration();
for (var j=0, styleLength=style.length; j < styleLength; j++) {
var name = styleClone[j] = style[j];
styleClone[name] = style[name];
styleClone._importants[name] = style.getPropertyPriority(name);
}
styleClone.length = style.length;
}
if (rule.hasOwnProperty('keyText')) {
ruleClone.keyText = rule.keyText;
}
if (rule.hasOwnProperty('selectorText')) {
ruleClone.selectorText = rule.selectorText;
}
if (rule.hasOwnProperty('mediaText')) {
ruleClone.mediaText = rule.mediaText;
}
if (rule.hasOwnProperty('conditionText')) {
ruleClone.conditionText = rule.conditionText;
}
if (rule.hasOwnProperty('cssRules')) {
ruleClone.cssRules = clone(rule).cssRules;
}
}
return cloned;
};
//.CommonJS
exports.clone = CSSOM.clone;
///CommonJS