--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/profile/profile.js	Tue Dec 23 14:28:28 2008 +0100
@@ -0,0 +1,54 @@
+// $Id: profile.js,v 1.2 2007/12/08 14:06:22 goba Exp $
+
+/**
+ * Add functionality to the profile drag and drop table.
+ *
+ * This behavior is dependent on the tableDrag behavior, since it uses the
+ * objects initialized in that behavior to update the row. It shows and hides
+ * a warning message when removing the last field from a profile category.
+ */
+Drupal.behaviors.profileDrag = function(context) {
+  var table = $('#profile-fields');
+  var tableDrag = Drupal.tableDrag['profile-fields']; // Get the profile tableDrag object.
+
+  // Add a handler for when a row is swapped, update empty categories.
+  tableDrag.row.prototype.onSwap = function(swappedRow) {
+    var rowObject = this;
+    $('tr.category-message', table).each(function() {
+      // If the dragged row is in this category, but above the message row, swap it down one space.
+      if ($(this).prev('tr').get(0) == rowObject.element) {
+        // Prevent a recursion problem when using the keyboard to move rows up.
+        if ((rowObject.method != 'keyboard' || rowObject.direction == 'down')) {
+          rowObject.swap('after', this);
+        }
+      }
+      // This category has become empty
+      if ($(this).next('tr').is(':not(.draggable)') || $(this).next('tr').size() == 0) {
+        $(this).removeClass('category-populated').addClass('category-empty');
+      }
+      // This category has become populated.
+      else if ($(this).is('.category-empty')) {
+        $(this).removeClass('category-empty').addClass('category-populated');
+      }
+    });
+  };
+
+  // Add a handler so when a row is dropped, update fields dropped into new categories.
+  tableDrag.onDrop = function() {
+    dragObject = this;
+    if ($(dragObject.rowObject.element).prev('tr').is('.category-message')) {
+      var categoryRow = $(dragObject.rowObject.element).prev('tr').get(0);
+      var categoryNum = categoryRow.className.replace(/([^ ]+[ ]+)*category-([^ ]+)-message([ ]+[^ ]+)*/, '$2');
+      var categoryField = $('select.profile-category', dragObject.rowObject.element);
+      var weightField = $('select.profile-weight', dragObject.rowObject.element);
+      var oldcategoryNum = weightField[0].className.replace(/([^ ]+[ ]+)*profile-weight-([^ ]+)([ ]+[^ ]+)*/, '$2');
+
+      if (!categoryField.is('.profile-category-'+ categoryNum)) {
+        categoryField.removeClass('profile-category-' + oldcategoryNum).addClass('profile-category-' + categoryNum);
+        weightField.removeClass('profile-weight-' + oldcategoryNum).addClass('profile-weight-' + categoryNum);
+
+        categoryField.val(categoryField[0].options[categoryNum].value);
+      }
+    }
+  };
+};