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showmore.js
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showmore.js
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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/>.
/**
* Initializes and handles events fow 'showmore' components.
*
* @module core/showmore
* @copyright 2023 Mikel Martín <mikel@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
const Selectors = {
actions: {
toggleContent: '[data-action="toggle-content"]'
},
regions: {
main: '[data-region="showmore"]'
}
};
let initialized = false;
/**
* Initialise module
*
* @method
*/
export const init = () => {
if (initialized) {
// We already added the event listeners (can be called multiple times by mustache template).
return;
}
// Listen for click events.
document.addEventListener('click', (event) => {
const toggleContent = event.target.closest(Selectors.actions.toggleContent);
if (toggleContent) {
const region = toggleContent.closest(Selectors.regions.main);
region.classList.toggle('collapsed');
const toggleButton = region.querySelector(Selectors.actions.toggleContent);
toggleButton.setAttribute('aria-expanded', !region.classList.contains('collapsed'));
}
});
initialized = true;
};