Added the ability to cancel a modal hide from the onHide callback

src/definitions/modules/modal.js

@@ -365,7 +365,10 @@ $.fn.modal = function(parameters) {
             : function(){}
           ;
           module.debug('Hiding modal');
-          settings.onHide.call(element);
+          if(settings.onHide.call(element, $(this)) === false) {
+            module.verbose('Hide callback returned false cancelling hide');
+            return;
+          }
 
           if( module.is.animating() || module.is.active() ) {
             if(settings.transition && $.fn.transition !== undefined && $module.transition('is supported')) {
@@ -854,7 +857,7 @@ $.fn.modal.settings = {
   onVisible  : function(){},
 
   // called before hide animation
-  onHide     : function(){},
+  onHide     : function(){ return true; },
 
   // called after hide animation
   onHidden   : function(){},