gitlab-org--gitlab-foss/app/assets/javascripts/ajax_loading_spinner.js

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JavaScript
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class AjaxLoadingSpinner {
static init() {
const $elements = $('.js-ajax-loading-spinner');
$elements.on('ajax:beforeSend', AjaxLoadingSpinner.ajaxBeforeSend);
$elements.on('ajax:complete', AjaxLoadingSpinner.ajaxComplete);
}
static ajaxBeforeSend(e) {
e.target.setAttribute('disabled', '');
const iconElement = e.target.querySelector('i');
// get first fa- icon
const originalIcon = iconElement.className.match(/(fa-)([^\s]+)/g).first();
iconElement.dataset.icon = originalIcon;
AjaxLoadingSpinner.toggleLoadingIcon(iconElement);
$(e.target).off('ajax:beforeSend', AjaxLoadingSpinner.ajaxBeforeSend);
}
static ajaxComplete(e) {
e.target.removeAttribute('disabled');
const iconElement = e.target.querySelector('i');
AjaxLoadingSpinner.toggleLoadingIcon(iconElement);
$(e.target).off('ajax:complete', AjaxLoadingSpinner.ajaxComplete);
}
static toggleLoadingIcon(iconElement) {
const classList = iconElement.classList;
classList.toggle(iconElement.dataset.icon);
classList.toggle('fa-spinner');
classList.toggle('fa-spin');
}
}
window.gl = window.gl || {};
gl.AjaxLoadingSpinner = AjaxLoadingSpinner;