gitlab-org--gitlab-foss/app/assets/javascripts/behaviors/toggler_behavior.js

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JavaScript
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import $ from 'jquery';
import { getLocationHash } from '../lib/utils/url_utility';
// Toggle button. Show/hide content inside parent container.
// Button does not change visibility. If button has icon - it changes chevron style.
//
// %div.js-toggle-container
// %button.js-toggle-button
// %div.js-toggle-content
//
$(() => {
function toggleContainer(container, toggleState) {
const $container = $(container);
const isExpanded = $container.data('is-expanded');
const $collapseIcon = $container.find('.js-sidebar-collapse');
const $expandIcon = $container.find('.js-sidebar-expand');
if (isExpanded && !toggleState) {
$container.data('is-expanded', false);
$collapseIcon.addClass('hidden');
$expandIcon.removeClass('hidden');
} else {
$container.data('is-expanded', true);
$expandIcon.addClass('hidden');
$collapseIcon.removeClass('hidden');
}
$container.find('.js-toggle-content').toggle(toggleState);
}
$('body').on('click', '.js-toggle-button', function toggleButton(e) {
e.currentTarget.classList.toggle(e.currentTarget.dataset.toggleOpenClass || 'selected');
toggleContainer($(this).closest('.js-toggle-container'));
const targetTag = e.currentTarget.tagName.toLowerCase();
if (targetTag === 'a' || targetTag === 'button') {
e.preventDefault();
}
});
// If we're accessing a permalink, ensure it is not inside a
// closed js-toggle-container!
const hash = getLocationHash();
const anchor = hash && document.getElementById(hash);
const container = anchor && $(anchor).closest('.js-toggle-container');
if (container) {
toggleContainer(container, true);
anchor.scrollIntoView();
}
});