Backend Modul Worpress Import added

packages/vitec/Resources/Public/Javascript/wp-import.js

@@ -0,0 +1,45 @@
+/**
+ * Select-all for the WordPress import list.
+ *
+ * Lives in a module rather than in an onclick attribute: the backend enforces a
+ * Content Security Policy that blocks inline event handlers, so the attribute
+ * version simply did nothing.
+ *
+ * Also keeps the header box honest - it shows indeterminate while only some
+ * rows are ticked, which matters on a list of a hundred posts.
+ */
+
+function boxes() {
+  return Array.from(document.querySelectorAll('[data-vitec-post]'));
+}
+
+function sync(toggle) {
+  const all = boxes();
+  const checked = all.filter((box) => box.checked).length;
+  toggle.checked = all.length > 0 && checked === all.length;
+  toggle.indeterminate = checked > 0 && checked < all.length;
+}
+
+function init() {
+  const toggle = document.querySelector('[data-vitec-toggle-all]');
+  if (toggle === null) {
+    return;
+  }
+
+  toggle.addEventListener('change', () => {
+    const state = toggle.checked;
+    boxes().forEach((box) => {
+      box.checked = state;
+    });
+    toggle.indeterminate = false;
+  });
+
+  boxes().forEach((box) => box.addEventListener('change', () => sync(toggle)));
+  sync(toggle);
+}
+
+if (document.readyState === 'loading') {
+  document.addEventListener('DOMContentLoaded', init);
+} else {
+  init();
+}