first commit

media/com_categories/js/shared-categories-accordion.js

@@ -0,0 +1,40 @@
+/**
+ * @copyright  (C) 2018 Open Source Matters, Inc. <https://www.joomla.org>
+ * @license    GNU General Public License version 2 or later; see LICENSE.txt
+ */
+
+if (!Joomla || !Joomla.Text) {
+  throw new Error('core.js was not properly initialised');
+}
+
+// Selectors used by this script
+const buttonsSelector = '[id^=category-btn-]';
+
+/**
+ * Handle the category toggle button click event
+ * @param event
+ */
+const handleCategoryToggleButtonClick = ({
+  currentTarget
+}) => {
+  const button = currentTarget;
+  const icon = button.querySelector('span');
+
+  // Toggle icon class
+  icon.classList.toggle('icon-plus');
+  icon.classList.toggle('icon-minus');
+
+  // Toggle aria label, aria-expanded
+  const ariaLabel = button.getAttribute('aria-label');
+  const ariaExpanded = button.getAttribute('aria-expanded');
+  button.setAttribute('aria-label', ariaLabel === Joomla.Text._('JGLOBAL_EXPAND_CATEGORIES') ? Joomla.Text._('JGLOBAL_COLLAPSE_CATEGORIES') : Joomla.Text._('JGLOBAL_EXPAND_CATEGORIES'));
+  button.setAttribute('aria-expanded', ariaExpanded === 'false' ? 'true' : 'false');
+  const {
+    categoryId
+  } = button.dataset;
+  const target = document.getElementById(`category-${categoryId}`);
+  target.toggleAttribute('hidden');
+};
+Array.from(document.querySelectorAll(buttonsSelector)).forEach(button => {
+  button.addEventListener('click', handleCategoryToggleButtonClick);
+});

media/com_categories/js/shared-categories-accordion.min.js

@@ -0,0 +1 @@
+if(!Joomla||!Joomla.Text)throw new Error("core.js was not properly initialised");const buttonsSelector="[id^=category-btn-]",handleCategoryToggleButtonClick=({currentTarget:t})=>{const e=t,o=e.querySelector("span");o.classList.toggle("icon-plus"),o.classList.toggle("icon-minus");const a=e.getAttribute("aria-label"),r=e.getAttribute("aria-expanded");e.setAttribute("aria-label",a===Joomla.Text._("JGLOBAL_EXPAND_CATEGORIES")?Joomla.Text._("JGLOBAL_COLLAPSE_CATEGORIES"):Joomla.Text._("JGLOBAL_EXPAND_CATEGORIES")),e.setAttribute("aria-expanded","false"===r?"true":"false");const{categoryId:l}=e.dataset;document.getElementById(`category-${l}`).toggleAttribute("hidden")};Array.from(document.querySelectorAll(buttonsSelector)).forEach((t=>{t.addEventListener("click",handleCategoryToggleButtonClick)}));