first commit

media/system/js/modal-content-select.js

@@ -0,0 +1,49 @@
+function _extends() {
+  _extends = Object.assign ? Object.assign.bind() : function (target) {
+    for (var i = 1; i < arguments.length; i++) {
+      var source = arguments[i];
+      for (var key in source) {
+        if (Object.prototype.hasOwnProperty.call(source, key)) {
+          target[key] = source[key];
+        }
+      }
+    }
+    return target;
+  };
+  return _extends.apply(this, arguments);
+}
+
+/**
+ * @copyright  (C) 2023 Open Source Matters, Inc. <https://www.joomla.org>
+ * @license    GNU General Public License version 2 or later; see LICENSE.txt
+ */
+
+/**
+ * A helper to Post a Message
+ * @param {Object} data
+ */
+const send = data => {
+  // Set the message type and send it
+  data.messageType = data.messageType || 'joomla:content-select';
+  window.parent.postMessage(data);
+};
+
+// Bind the buttons
+document.addEventListener('click', event => {
+  const button = event.target.closest('[data-content-select]');
+  if (!button) return;
+  event.preventDefault();
+
+  // Extract the data and send
+  const data = _extends({}, button.dataset);
+  delete data.contentSelect;
+  send(data);
+});
+
+// Check for "select on load"
+window.addEventListener('load', () => {
+  const data = Joomla.getOptions('content-select-on-load');
+  if (data) {
+    send(data);
+  }
+});