public_library_map/node_modules/cheerio/lib/api/css.js
2021-09-05 10:12:48 +00:00

96 lines
2.6 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.css = void 0;
var utils_1 = require("../utils");
function css(prop, val) {
if ((prop != null && val != null) ||
// When `prop` is a "plain" object
(typeof prop === 'object' && !Array.isArray(prop))) {
return utils_1.domEach(this, function (el, i) {
if (utils_1.isTag(el)) {
// `prop` can't be an array here anymore.
setCss(el, prop, val, i);
}
});
}
return getCss(this[0], prop);
}
exports.css = css;
/**
* Set styles of all elements.
*
* @private
* @param el - Element to set style of.
* @param prop - Name of property.
* @param value - Value to set property to.
* @param idx - Optional index within the selection.
*/
function setCss(el, prop, value, idx) {
if (typeof prop === 'string') {
var styles = getCss(el);
var val = typeof value === 'function' ? value.call(el, idx, styles[prop]) : value;
if (val === '') {
delete styles[prop];
}
else if (val != null) {
styles[prop] = val;
}
el.attribs.style = stringify(styles);
}
else if (typeof prop === 'object') {
Object.keys(prop).forEach(function (k, i) {
setCss(el, k, prop[k], i);
});
}
}
function getCss(el, prop) {
if (!el || !utils_1.isTag(el))
return;
var styles = parse(el.attribs.style);
if (typeof prop === 'string') {
return styles[prop];
}
if (Array.isArray(prop)) {
var newStyles_1 = {};
prop.forEach(function (item) {
if (styles[item] != null) {
newStyles_1[item] = styles[item];
}
});
return newStyles_1;
}
return styles;
}
/**
* Stringify `obj` to styles.
*
* @private
* @category CSS
* @param obj - Object to stringify.
* @returns The serialized styles.
*/
function stringify(obj) {
return Object.keys(obj).reduce(function (str, prop) { return "" + str + (str ? ' ' : '') + prop + ": " + obj[prop] + ";"; }, '');
}
/**
* Parse `styles`.
*
* @private
* @category CSS
* @param styles - Styles to be parsed.
* @returns The parsed styles.
*/
function parse(styles) {
styles = (styles || '').trim();
if (!styles)
return {};
return styles.split(';').reduce(function (obj, str) {
var n = str.indexOf(':');
// Skip if there is no :, or if it is the first/last character
if (n < 1 || n === str.length - 1)
return obj;
obj[str.slice(0, n).trim()] = str.slice(n + 1).trim();
return obj;
}, {});
}