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.
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JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const PropertySymbol = __importStar(require("../../PropertySymbol.cjs"));
const DatasetUtility_js_1 = __importDefault(require("./DatasetUtility.cjs"));
/**
* Dataset factory.
*
* Reference:
* https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/dataset
*/
class DatasetFactory {
/**
* @param element The parent element.
*/
static createDataset(element) {
// Build the initial dataset record from all data attributes.
const dataset = {};
for (let i = 0, max = element[PropertySymbol.attributes].length; i < max; i++) {
const attribute = element[PropertySymbol.attributes][i];
if (attribute[PropertySymbol.name].startsWith('data-')) {
const key = DatasetUtility_js_1.default.kebabToCamelCase(attribute[PropertySymbol.name].replace('data-', ''));
dataset[key] = attribute[PropertySymbol.value];
}
}
// Documentation for Proxy:
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy
return new Proxy(dataset, {
get(dataset, key) {
const attribute = element[PropertySymbol.attributes].getNamedItem('data-' + DatasetUtility_js_1.default.camelCaseToKebab(key));
if (attribute) {
return (dataset[key] = attribute[PropertySymbol.value]);
}
delete dataset[key];
return undefined;
},
set(dataset, key, value) {
element.setAttribute('data-' + DatasetUtility_js_1.default.camelCaseToKebab(key), value);
dataset[key] = value;
return true;
},
deleteProperty(dataset, key) {
element[PropertySymbol.attributes][PropertySymbol.removeNamedItem]('data-' + DatasetUtility_js_1.default.camelCaseToKebab(key));
return delete dataset[key];
},
ownKeys(dataset) {
// According to Mozilla we have to update the dataset object (target) to contain the same keys as what we return:
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/ownKeys
// "The result List must contain the keys of all non-configurable own properties of the target object."
const keys = [];
const deleteKeys = [];
for (let i = 0, max = element[PropertySymbol.attributes].length; i < max; i++) {
const attribute = element[PropertySymbol.attributes][i];
if (attribute[PropertySymbol.name].startsWith('data-')) {
const key = DatasetUtility_js_1.default.kebabToCamelCase(attribute[PropertySymbol.name].replace('data-', ''));
keys.push(key);
dataset[key] = attribute[PropertySymbol.value];
if (!dataset[key]) {
deleteKeys.push(key);
}
}
}
for (const key of deleteKeys) {
delete dataset[key];
}
return keys;
},
has(_dataset, key) {
return !!element[PropertySymbol.attributes].getNamedItem('data-' + DatasetUtility_js_1.default.camelCaseToKebab(key));
}
});
}
}
exports.default = DatasetFactory;
//# sourceMappingURL=DatasetFactory.cjs.map