#2062 adds onOpening onClosing callback, adds rlsnotes

RELEASE-NOTES.md

@@ -23,6 +23,7 @@
 - **Steps** - Steps now use `flexbox`, the default horizontal theme has the active element point downward now instead of to the right. Steps no longer need `item count` and will automatically divide evenly
 
 **Enhancements**
+- **Accordion** - adds `onOpening` and `onClosing` callback (before animation) to go with `onOpen`, `onClose` (after animation) **Thanks @cluppric**
 - **Build Tools** - Adjusting `site.variables` will now rebuild all UI, instead of just `site.less`
 - **Divider** - `vertical divider` inside `ui grid` now accounts for column padding
 - **Dropdown** - Dropdowns now automatically observe changes in `menu` and will update selector cache with new additions

src/definitions/modules/accordion.js

@@ -157,7 +157,7 @@ $.fn.accordion = function(parameters) {
           ;
           if(isUnopen) {
             module.debug('Opening accordion content', $activeTitle);
-            settings.onOpening.call(this);
+            settings.onOpening.call($activeContent);
             if(settings.exclusive) {
               module.closeOthers.call($activeTitle);
             }
@@ -219,6 +219,7 @@ $.fn.accordion = function(parameters) {
           ;
           if((isActive || isOpening) && !isClosing) {
             module.debug('Closing accordion content', $activeContent);
+            settings.onClosing.call($activeContent);
             $activeTitle
               .removeClass(className.active)
             ;
@@ -548,6 +549,7 @@ $.fn.accordion.settings = {
 
   onOpening       : function(){},
   onOpen          : function(){},
+  onClosing       : function(){},
   onClose         : function(){},
   onChange        : function(){},