1 files changed, 67 insertions, 0 deletions

diff --git a/inc/plugin_admin.js b/inc/plugin_admin.js
new file mode 100644
index 00000000..134ffb33
--- /dev/null
+++ b/inc/plugin_admin.js
@@ -0,0 +1,67 @@
+/**
+ * Change the position counter of a row.
+ *
+ * @param elem  Element Node to change.
+ * @param toPos int     New position.
+ */
+function changePos(elem, toPos)
+{
+    var elemName = elem.getAttribute('data-line')
+
+    elem.setAttribute('data-order', toPos);
+    var 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)
+{
+    var newpos = parseInt(pos) + move;
+    var line = document.querySelector('[data-order="'+ pos +'"]');
+    var changeline = document.querySelector('[data-order="'+ newpos +'"]');
+    var parent = changeline.parentNode;
+
+    changePos(line, newpos);
+    changePos(changeline, parseInt(pos));
+    var changeItem = move < 0 ? changeline : changeline.nextSibling;
+    parent.insertBefore(line, changeItem);
+}
+
+/**
+ * Move a row up in the table.
+ *
+ * @param pos int row counter.
+ *
+ * @returns false
+ */
+function orderUp(pos)
+{
+    if (pos == 0) {
+        return false;
+    }
+    changeOrder(pos, -1);
+    return false;
+}
+
+/**
+ * Move a row down in the table.
+ *
+ * @param pos int row counter.
+ *
+ * @returns false
+ */
+function orderDown(pos)
+{
+    var lastpos = document.querySelector('[data-order]:last-child').getAttribute('data-order');
+    if (pos == lastpos) {
+        return false;
+    }
+
+    changeOrder(pos, +1);
+    return false;
+}