From 0179e23980fb873f04104ea1637ac0ed2cd612fc Mon Sep 17 00:00:00 2001
From: Sameer Rahmani <lxsameer@gnu.org>
Date: Tue, 20 Oct 2015 17:05:12 +0330
Subject: [PATCH] support for disable classes added.

With this change each element that contains the `data-disable-with`
attribute can provides an attribute called `data-disable-class`
which would be a string of classes to be added to the element
after the element disabled. For example using this feature it
would be possible to pass `disabled` css class to a bootstrap button.
---
 vendor/assets/javascripts/jquery_ujs.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/vendor/assets/javascripts/jquery_ujs.js b/vendor/assets/javascripts/jquery_ujs.js
index ffbc0ef0..e58c0609 100644
--- a/vendor/assets/javascripts/jquery_ujs.js
+++ b/vendor/assets/javascripts/jquery_ujs.js
@@ -338,12 +338,17 @@
     //  and prevent clicking on it
     disableElement: function(element) {
       var replacement = element.data('disable-with');
+      var classes     = element.data('disable-class');
 
       element.data('ujs:enable-with', element.html()); // store enabled state
       if (replacement !== undefined) {
         element.html(replacement);
       }
 
+      if (classes !== undefined) {
+        element.addClass(classes);
+      }
+
       element.bind('click.railsDisable', function(e) { // prevent further clicking
         return rails.stopEverything(e);
       });
@@ -351,10 +356,17 @@
 
     // restore element to its original state which was disabled by 'disableElement' above
     enableElement: function(element) {
+      var classes = element.data('disable-class');
+
       if (element.data('ujs:enable-with') !== undefined) {
         element.html(element.data('ujs:enable-with')); // set to old enabled state
         element.removeData('ujs:enable-with'); // clean up cache
       }
+
+      if (classes !== undefined) {
+        element.removeClass(classes);
+      }
+
       element.unbind('click.railsDisable'); // enable element
     }
   };