#5892 - Add onChanging callback

src/definitions/modules/accordion.js

@@ -169,6 +169,7 @@ $.fn.accordion = function(parameters) {
           }
           module.debug('Opening accordion content', $activeTitle);
           settings.onOpening.call($activeContent);
+          settings.onChanging.call($activeContent);
           if(settings.exclusive) {
             module.closeOthers.call($activeTitle);
           }
@@ -232,6 +233,7 @@ $.fn.accordion = function(parameters) {
           if((isActive || isOpening) && !isClosing) {
             module.debug('Closing accordion content', $activeContent);
             settings.onClosing.call($activeContent);
+            settings.onChanging.call($activeContent);
             $activeTitle
               .removeClass(className.active)
             ;
@@ -574,10 +576,11 @@ $.fn.accordion.settings = {
   duration        : 350, // duration of animation
   easing          : 'easeOutQuad', // easing equation for animation
 
-
   onOpening       : function(){}, // callback before open animation
-  onOpen          : function(){}, // callback after open animation
   onClosing       : function(){}, // callback before closing animation
+  onChanging      : function(){}, // callback before closing or opening animation
+
+  onOpen          : function(){}, // callback after open animation
   onClose         : function(){}, // callback after closing animation
   onChange        : function(){}, // callback after closing or opening animation