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// This file is part of Moodle - http://moodle.org/ // // Moodle is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Moodle is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Moodle. If not, see <http://www.gnu.org/licenses/>. /** * Normalisation helpers. * * @module core/normalise * @copyright 2020 Andrew Nicols <andrew@nicols.co.uk> * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later / import jQuery from 'jquery'; /* * Normalise a list of Nodes into an Array of Nodes. * * @method getList * @param {(Array\|jQuery\|NodeList\|HTMLElement)} nodes * @returns {HTMLElement[]} / export const getList = nodes => { if (nodes instanceof HTMLElement) { // A single record to conver to a NodeList. return [nodes]; } if (nodes instanceof Array) { // A single record to conver to a NodeList. return nodes; } if (nodes instanceof NodeList) { // Already a NodeList. return Array.from(nodes); } if (nodes instanceof jQuery) { // A jQuery object to a NodeList. return nodes.get(); } // Fallback to just having a go. return Array.from(nodes); }; /* * Return the first element in a list of normalised Nodes. * * @param {Array\|jQuery\|NodeList\|HTMLElement} nodes the unmormalised list of nodes * @returns {HTMLElement\|undefined} the first list element / export const getFirst = nodes => { const list = getList(nodes); return list[0]; }; /* * Normalise a single node into an HTMLElement. * * @param {jQuery\|Y.Node\|HTMLElement} node The node to normalise * @returns {HTMLElement} */ export const getElement = (node) => { if (node instanceof HTMLElement) { return node; } if (node?._node) { // This is likely a YUI Node. // We can use (node instanceof Y.Node) but we would have to load YUI to do some. return node._node; } if (node instanceof jQuery && node.length > 0) { return node.get(0); } return null; };

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