happy-dom
Version:
Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.
248 lines • 12.8 kB
JavaScript
;
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o[k2] = m[k];
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Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
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var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const CSSRule_js_1 = __importDefault(require("../CSSRule.cjs"));
const PropertySymbol = __importStar(require("../../PropertySymbol.cjs"));
const CSSStyleRule_js_1 = __importDefault(require("../rules/CSSStyleRule.cjs"));
const CSSKeyframeRule_js_1 = __importDefault(require("../rules/CSSKeyframeRule.cjs"));
const CSSKeyframesRule_js_1 = __importDefault(require("../rules/CSSKeyframesRule.cjs"));
const CSSMediaRule_js_1 = __importDefault(require("../rules/CSSMediaRule.cjs"));
const CSSContainerRule_js_1 = __importDefault(require("../rules/CSSContainerRule.cjs"));
const CSSSupportsRule_js_1 = __importDefault(require("../rules/CSSSupportsRule.cjs"));
const CSSFontFaceRule_js_1 = __importDefault(require("../rules/CSSFontFaceRule.cjs"));
const SelectorParser_js_1 = __importDefault(require("../../query-selector/SelectorParser.cjs"));
const CSSRuleTypeEnum_js_1 = __importDefault(require("../CSSRuleTypeEnum.cjs"));
const COMMENT_REGEXP = /\/\*[\s\S]*?\*\//gm;
/**
* CSS parser.
*/
class CSSParser {
/**
* Parses HTML and returns a root element.
*
* @param parentStyleSheet Parent style sheet.
* @param cssText CSS code.
* @returns Root element.
*/
static parseFromString(parentStyleSheet, cssText) {
const window = parentStyleSheet[PropertySymbol.window];
const css = cssText.replace(COMMENT_REGEXP, '');
const cssRules = [];
const regExp = /{|}/gm;
const stack = [];
let parentRule = null;
let lastIndex = 0;
let match;
while ((match = regExp.exec(css))) {
if (match[0] === '{') {
const selectorText = css.substring(lastIndex, match.index).trim();
if (selectorText[0] === '@') {
const ruleParts = selectorText.split(' ');
const ruleType = ruleParts[0];
const ruleParameters = ruleParts.slice(1).join(' ').trim();
switch (ruleType) {
case '@keyframes':
case '@-webkit-keyframes':
const keyframesRule = new CSSKeyframesRule_js_1.default(PropertySymbol.illegalConstructor, window);
keyframesRule.name = ruleParameters;
keyframesRule.parentStyleSheet = parentStyleSheet;
if (parentRule) {
if (parentRule.type === CSSRuleTypeEnum_js_1.default.mediaRule ||
parentRule.type === CSSRuleTypeEnum_js_1.default.containerRule ||
parentRule.type === CSSRuleTypeEnum_js_1.default.supportsRule) {
parentRule.cssRules.push(keyframesRule);
}
}
else {
cssRules.push(keyframesRule);
}
parentRule = keyframesRule;
break;
case '@media':
const mediums = ruleParameters.split(',');
const mediaRule = new CSSMediaRule_js_1.default(PropertySymbol.illegalConstructor, window);
for (const medium of mediums) {
mediaRule.media.appendMedium(medium.trim());
}
mediaRule.parentStyleSheet = parentStyleSheet;
if (parentRule) {
if (parentRule.type === CSSRuleTypeEnum_js_1.default.mediaRule ||
parentRule.type === CSSRuleTypeEnum_js_1.default.containerRule ||
parentRule.type === CSSRuleTypeEnum_js_1.default.supportsRule) {
parentRule.cssRules.push(mediaRule);
}
}
else {
cssRules.push(mediaRule);
}
parentRule = mediaRule;
break;
case '@container':
case '@-webkit-container':
const containerRule = new CSSContainerRule_js_1.default(PropertySymbol.illegalConstructor, window);
containerRule.conditionText = ruleParameters;
containerRule.parentStyleSheet = parentStyleSheet;
if (parentRule) {
if (parentRule.type === CSSRuleTypeEnum_js_1.default.mediaRule ||
parentRule.type === CSSRuleTypeEnum_js_1.default.containerRule ||
parentRule.type === CSSRuleTypeEnum_js_1.default.supportsRule) {
parentRule.cssRules.push(containerRule);
}
}
else {
cssRules.push(containerRule);
}
parentRule = containerRule;
break;
case '@supports':
case '@-webkit-supports':
const supportsRule = new CSSSupportsRule_js_1.default(PropertySymbol.illegalConstructor, window);
supportsRule.conditionText = ruleParameters;
supportsRule.parentStyleSheet = parentStyleSheet;
if (parentRule) {
if (parentRule.type === CSSRuleTypeEnum_js_1.default.mediaRule ||
parentRule.type === CSSRuleTypeEnum_js_1.default.containerRule ||
parentRule.type === CSSRuleTypeEnum_js_1.default.supportsRule) {
parentRule.cssRules.push(supportsRule);
}
}
else {
cssRules.push(supportsRule);
}
parentRule = supportsRule;
break;
case '@font-face':
const fontFaceRule = new CSSFontFaceRule_js_1.default(PropertySymbol.illegalConstructor, window);
fontFaceRule[PropertySymbol.cssText] = ruleParameters;
fontFaceRule.parentStyleSheet = parentStyleSheet;
if (parentRule) {
if (parentRule.type === CSSRuleTypeEnum_js_1.default.mediaRule ||
parentRule.type === CSSRuleTypeEnum_js_1.default.containerRule ||
parentRule.type === CSSRuleTypeEnum_js_1.default.supportsRule) {
parentRule.cssRules.push(fontFaceRule);
}
}
else {
cssRules.push(fontFaceRule);
}
parentRule = fontFaceRule;
break;
default:
// Unknown rule.
// We will create a new rule to let it grab its content, but we will not add it to the cssRules array.
const newRule = new CSSRule_js_1.default(PropertySymbol.illegalConstructor, window);
newRule.parentStyleSheet = parentStyleSheet;
parentRule = newRule;
break;
}
}
else if (parentRule && parentRule.type === CSSRuleTypeEnum_js_1.default.keyframesRule) {
const newRule = new CSSKeyframeRule_js_1.default(PropertySymbol.illegalConstructor, window);
newRule.keyText = selectorText.trim();
newRule.parentStyleSheet = parentStyleSheet;
newRule.parentRule = parentRule;
parentRule.cssRules.push(newRule);
parentRule = newRule;
}
else if (parentRule &&
(parentRule.type === CSSRuleTypeEnum_js_1.default.mediaRule ||
parentRule.type === CSSRuleTypeEnum_js_1.default.containerRule ||
parentRule.type === CSSRuleTypeEnum_js_1.default.supportsRule)) {
if (this.validateSelectorText(selectorText)) {
const newRule = new CSSStyleRule_js_1.default(PropertySymbol.illegalConstructor, window);
newRule.selectorText = selectorText;
newRule.parentStyleSheet = parentStyleSheet;
newRule.parentRule = parentRule;
parentRule.cssRules.push(newRule);
parentRule = newRule;
}
}
else {
if (this.validateSelectorText(selectorText)) {
const newRule = new CSSStyleRule_js_1.default(PropertySymbol.illegalConstructor, window);
newRule.selectorText = selectorText;
newRule.parentStyleSheet = parentStyleSheet;
newRule.parentRule = parentRule;
if (!parentRule) {
cssRules.push(newRule);
}
parentRule = newRule;
}
}
stack.push(parentRule);
}
else {
if (parentRule) {
const cssText = css
.substring(lastIndex, match.index)
.trim()
.replace(/([^;])$/, '$1;'); // Ensure last semicolon
switch (parentRule.type) {
case CSSRuleTypeEnum_js_1.default.fontFaceRule:
case CSSRuleTypeEnum_js_1.default.keyframeRule:
case CSSRuleTypeEnum_js_1.default.styleRule:
parentRule[PropertySymbol.cssText] = cssText;
break;
}
}
stack.pop();
parentRule = stack[stack.length - 1] || null;
}
lastIndex = match.index + 1;
}
return cssRules;
}
/**
* Validates a selector text.
*
* @see https://www.w3.org/TR/CSS21/syndata.html#rule-sets
* @param selectorText Selector text.
* @returns True if valid, false otherwise.
*/
static validateSelectorText(selectorText) {
try {
SelectorParser_js_1.default.getSelectorGroups(selectorText);
}
catch (e) {
return false;
}
return true;
}
}
exports.default = CSSParser;
//# sourceMappingURL=CSSParser.cjs.map