Transition: prevents same animation from occurring twice by default

src/modules/transition.js

@@ -130,7 +130,12 @@ $.fn.transition = function() {
           }
           module.debug('Preparing animation', settings.animation);
           if(module.is.animating() && settings.queue) {
-            module.queue(settings.animation);
+            if(!settings.allowRepeats && module.has.direction() && module.is.occuring() && instance.queuing !== true) {
+              module.error(error.repeated);
+            }
+            else {
+              module.queue(settings.animation);
+            }
             return false;
           }
           if(module.can.animate) {
@@ -540,6 +545,10 @@ $.fn.transition = function() {
           looping: function() {
             return $module.hasClass(className.looping);
           },
+          occuring: function(animation) {
+            animation = animation || settings.animation;
+            return ( $module.hasClass(animation) );
+          },
           visible: function() {
             return $module.is(':visible');
           },
@@ -766,9 +775,12 @@ $.fn.transition.settings = {
   onShow      : function() {},
   onHide      : function() {},
 
+  // whether animation can occur twice in a row
+  allowRepeats : false,
+
   // animation duration
-  animation   : 'fade',
-  duration    : '700ms',
+  animation  : 'fade',
+  duration   : '700ms',
 
   // new animations will occur after previous ones
   queue       : true,
@@ -788,6 +800,7 @@ $.fn.transition.settings = {
   // possible errors
   error: {
     noAnimation : 'There is no css animation matching the one you specified.',
+    repeated    : 'You specified the same animation to occur again while it was already occurring, preventing repeated animation',
     method      : 'The method you called is not defined',
     support     : 'This browser does not support CSS animations'
   }