1 files changed, 81 insertions, 0 deletions

diff --git a/assets/default/js/plugins-admin.js b/assets/default/js/plugins-admin.js
new file mode 100644
index 00000000..46df4a3c
--- /dev/null
+++ b/assets/default/js/plugins-admin.js
@@ -0,0 +1,81 @@
+/**
+ * Change the position counter of a row.
+ *
+ * @param elem  Element Node to change.
+ * @param toPos int     New position.
+ */
+function changePos(elem, toPos) {
+  const elemName = elem.getAttribute('data-line');
+  elem.setAttribute('data-order', toPos);
+  const hiddenInput = document.querySelector(`[name="order_${elemName}"]`);
+  hiddenInput.setAttribute('value', toPos);
+}
+
+/**
+ * Move a row up or down.
+ *
+ * @param pos  Element Node to move.
+ * @param move int     Move: +1 (down) or -1 (up)
+ */
+function changeOrder(pos, move) {
+  const newpos = parseInt(pos, 10) + move;
+  let lines = document.querySelectorAll(`[data-order="${pos}"]`);
+  const changelines = document.querySelectorAll(`[data-order="${newpos}"]`);
+
+  // If we go down reverse lines to preserve the rows order
+  if (move > 0) {
+    lines = [].slice.call(lines).reverse();
+  }
+
+  for (let i = 0; i < lines.length; i += 1) {
+    const parent = changelines[0].parentNode;
+    changePos(lines[i], newpos);
+    changePos(changelines[i], parseInt(pos, 10));
+    const changeItem = move < 0 ? changelines[0] : changelines[changelines.length - 1].nextSibling;
+    parent.insertBefore(lines[i], changeItem);
+  }
+}
+
+/**
+ * Move a row up in the table.
+ *
+ * @param pos int row counter.
+ *
+ * @return false
+ */
+function orderUp(pos) {
+  if (pos !== 0) {
+    changeOrder(pos, -1);
+  }
+}
+
+/**
+ * Move a row down in the table.
+ *
+ * @param pos int row counter.
+ *
+ * @returns false
+ */
+function orderDown(pos) {
+  const lastpos = parseInt(document.querySelector('[data-order]:last-child').getAttribute('data-order'), 10);
+  if (pos !== lastpos) {
+    changeOrder(pos, 1);
+  }
+}
+
+(() => {
+  /**
+   * Plugin admin order
+   */
+  const orderPA = document.querySelectorAll('.order');
+  [...orderPA].forEach((link) => {
+    link.addEventListener('click', (event) => {
+      event.preventDefault();
+      if (event.target.classList.contains('order-up')) {
+        orderUp(parseInt(event.target.parentNode.parentNode.getAttribute('data-order'), 10));
+      } else if (event.target.classList.contains('order-down')) {
+        orderDown(parseInt(event.target.parentNode.parentNode.getAttribute('data-order'), 10));
+      }
+    });
+  });
+})();