first import

sites/all/modules/diff/js/diff.js

@@ -0,0 +1,58 @@
+(function ($) {
+
+Drupal.behaviors.diffRevisions = {
+  attach: function (context, settings) {
+    var $rows = $('table.diff-revisions tbody tr');
+    function updateDiffRadios() {
+      var newTd = false;
+      var oldTd = false;
+      if (!$rows.length) {
+        return true;
+      }
+      $rows.removeClass('selected').each(function() {
+        var $row = $(this);
+        $row.removeClass('selected');
+        var $inputs = $row.find('input[type="radio"]');
+        var $oldRadio = $inputs.filter('[name="old"]').eq(0);
+        var $newRadio = $inputs.filter('[name="new"]').eq(0);
+        if (!$oldRadio.length || !$newRadio.length) {
+          return true;
+        }
+        if ($oldRadio.attr('checked')) {
+          oldTd = true;
+          $row.addClass('selected');
+          $oldRadio.css('visibility', 'visible');
+          $newRadio.css('visibility', 'hidden');
+        } else if ($newRadio.attr('checked')) {
+          newTd = true;
+          $row.addClass('selected');
+          $oldRadio.css('visibility', 'hidden');
+          $newRadio.css('visibility', 'visible');
+        } else {
+          if (Drupal.settings.diffRevisionRadios == 'linear') {
+            if (newTd && oldTd) {
+              $oldRadio.css('visibility', 'visible');
+              $newRadio.css('visibility', 'hidden');
+            } else if (newTd) {
+              $newRadio.css('visibility', 'visible');
+              $oldRadio.css('visibility', 'visible');
+            } else {
+              $newRadio.css('visibility', 'visible');
+              $oldRadio.css('visibility', 'hidden');
+            }
+          } else {
+            $newRadio.css('visibility', 'visible');
+            $oldRadio.css('visibility', 'visible');
+          }
+        }
+      });
+      return true;
+    }
+    if (Drupal.settings.diffRevisionRadios) {
+      $rows.find('input[name="new"], input[name="old"]').click(updateDiffRadios);
+      updateDiffRadios();
+    }
+  }
+};
+
+})(jQuery);