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190 lines
3.5 KiB
190 lines
3.5 KiB
//.CommonJS
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var CSSOM = {
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CSSStyleDeclaration: require("./CSSStyleDeclaration").CSSStyleDeclaration,
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CSSRule: require("./CSSRule").CSSRule
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};
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///CommonJS
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/**
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* @constructor
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* @see http://dev.w3.org/csswg/cssom/#cssstylerule
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* @see http://www.w3.org/TR/DOM-Level-2-Style/css.html#CSS-CSSStyleRule
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*/
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CSSOM.CSSStyleRule = function CSSStyleRule() {
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CSSOM.CSSRule.call(this);
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this.selectorText = "";
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this.style = new CSSOM.CSSStyleDeclaration();
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this.style.parentRule = this;
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};
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CSSOM.CSSStyleRule.prototype = new CSSOM.CSSRule();
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CSSOM.CSSStyleRule.prototype.constructor = CSSOM.CSSStyleRule;
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CSSOM.CSSStyleRule.prototype.type = 1;
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Object.defineProperty(CSSOM.CSSStyleRule.prototype, "cssText", {
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get: function() {
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var text;
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if (this.selectorText) {
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text = this.selectorText + " {" + this.style.cssText + "}";
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} else {
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text = "";
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}
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return text;
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},
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set: function(cssText) {
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var rule = CSSOM.CSSStyleRule.parse(cssText);
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this.style = rule.style;
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this.selectorText = rule.selectorText;
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}
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});
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/**
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* NON-STANDARD
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* lightweight version of parse.js.
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* @param {string} ruleText
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* @return CSSStyleRule
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*/
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CSSOM.CSSStyleRule.parse = function(ruleText) {
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var i = 0;
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var state = "selector";
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var index;
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var j = i;
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var buffer = "";
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var SIGNIFICANT_WHITESPACE = {
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"selector": true,
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"value": true
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};
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var styleRule = new CSSOM.CSSStyleRule();
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var name, priority="";
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for (var character; (character = ruleText.charAt(i)); i++) {
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switch (character) {
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case " ":
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case "\t":
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case "\r":
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case "\n":
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case "\f":
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if (SIGNIFICANT_WHITESPACE[state]) {
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// Squash 2 or more white-spaces in the row into 1
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switch (ruleText.charAt(i - 1)) {
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case " ":
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case "\t":
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case "\r":
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case "\n":
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case "\f":
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break;
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default:
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buffer += " ";
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break;
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}
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}
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break;
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// String
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case '"':
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j = i + 1;
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index = ruleText.indexOf('"', j) + 1;
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if (!index) {
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throw '" is missing';
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}
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buffer += ruleText.slice(i, index);
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i = index - 1;
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break;
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case "'":
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j = i + 1;
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index = ruleText.indexOf("'", j) + 1;
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if (!index) {
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throw "' is missing";
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}
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buffer += ruleText.slice(i, index);
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i = index - 1;
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break;
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// Comment
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case "/":
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if (ruleText.charAt(i + 1) === "*") {
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i += 2;
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index = ruleText.indexOf("*/", i);
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if (index === -1) {
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throw new SyntaxError("Missing */");
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} else {
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i = index + 1;
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}
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} else {
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buffer += character;
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}
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break;
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case "{":
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if (state === "selector") {
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styleRule.selectorText = buffer.trim();
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buffer = "";
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state = "name";
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}
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break;
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case ":":
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if (state === "name") {
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name = buffer.trim();
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buffer = "";
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state = "value";
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} else {
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buffer += character;
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}
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break;
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case "!":
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if (state === "value" && ruleText.indexOf("!important", i) === i) {
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priority = "important";
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i += "important".length;
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} else {
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buffer += character;
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}
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break;
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case ";":
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if (state === "value") {
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styleRule.style.setProperty(name, buffer.trim(), priority);
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priority = "";
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buffer = "";
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state = "name";
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} else {
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buffer += character;
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}
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break;
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case "}":
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if (state === "value") {
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styleRule.style.setProperty(name, buffer.trim(), priority);
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priority = "";
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buffer = "";
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} else if (state === "name") {
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break;
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} else {
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buffer += character;
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}
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state = "selector";
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break;
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default:
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buffer += character;
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break;
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}
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}
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return styleRule;
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};
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//.CommonJS
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exports.CSSStyleRule = CSSOM.CSSStyleRule;
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///CommonJS
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