feat(carousel): add option to prevent pause

sometimes we want the carousel to spin even if the mouse hovers over it. Added an option for an optional attribute, doesn't break current templates

Author: mokesmokes

src/carousel/carousel.js

@@ -5,7 +5,8 @@
 *      A pure AngularJS carousel.
 *      
 *      For no interval set the interval to non-number, or milliseconds of desired interval
-*      Template: <carousel interval="none"><slide>{{anything}}</slide></carousel>
+*      To prevent pause upon mouseover set the nopause attribute to a truthy value
+*      Template: <carousel interval="none" nopause="someValue"><slide>{{anything}}</slide></carousel>
 *      To change the carousel's active slide set the active attribute to true
 *      Template: <carousel interval="none"><slide active="someModel">{{anything}}</slide></carousel>
 */
@@ -130,9 +131,11 @@ angular.module('ui.bootstrap.carousel', ['ui.bootstrap.transition'])
     }
   };
   $scope.pause = function() {
-    isPlaying = false;
-    if (currentTimeout) {
-      $timeout.cancel(currentTimeout);
+    if (!$scope.noPause) {
+      isPlaying = false;
+      if (currentTimeout) {
+        $timeout.cancel(currentTimeout);
+      }
     }
   };
 
@@ -173,7 +176,8 @@ angular.module('ui.bootstrap.carousel', ['ui.bootstrap.transition'])
     templateUrl: 'template/carousel/carousel.html',
     scope: {
       interval: '=',
-      noTransition: '='
+      noTransition: '=',
+      noPause: '='
     }
   };
 }])

src/carousel/test/carousel.spec.js

@@ -20,14 +20,15 @@ describe('carousel', function() {
         {active:false,content:'three'}
       ];
       elm = $compile(
-        '<carousel interval="interval" no-transition="true">' +
+        '<carousel interval="interval" no-transition="true" no-pause="nopause">' +
           '<slide ng-repeat="slide in slides" active="slide.active">' +
             '{{slide.content}}' +
           '</slide>' +
         '</carousel>' 
       )(scope);
       carouselScope = elm.scope();
       scope.interval = 5000;
+      scope.nopause = undefined;
       scope.$apply();
     });
     afterEach(function() {
@@ -178,6 +179,17 @@ describe('carousel', function() {
       $timeout.flush();
       testSlideActive(2);
     });
+    
+    it('should not pause on mouseover if noPause', function() {
+      scope.$apply('nopause = true');
+      testSlideActive(0);
+      elm.trigger('mouseenter');
+      $timeout.flush();
+      testSlideActive(1);
+      elm.trigger('mouseleave');
+      $timeout.flush();
+      testSlideActive(2);
+    });    
 
     it('should remove slide from dom and change active slide', function() {
       scope.$apply('slides[1].active = true');