fix(typeahead): dangling event listeners

src/typeahead/test/typeahead.spec.js

@@ -1012,6 +1012,29 @@ describe('typeahead tests', function() {
       expect(element).toBeOpenWithActive(3, 0);
     });
   });
+
+  describe('event listeners', function() {
+    it('should register event listeners when attached to body', function() {
+      spyOn(window, 'addEventListener');
+      spyOn(document.body, 'addEventListener');
+
+      var element = prepareInputEl('<div><input ng-model="result" uib-typeahead="item for item in source | filter:$viewValue" typeahead-append-to-body="true"></div>');
+
+      expect(window.addEventListener).toHaveBeenCalledWith('resize', jasmine.any(Function), false);
+      expect(document.body.addEventListener).toHaveBeenCalledWith('scroll', jasmine.any(Function), false);
+    });
+
+    it('should remove event listeners when attached to body', function() {
+      spyOn(window, 'removeEventListener');
+      spyOn(document.body, 'removeEventListener');
+
+      var element = prepareInputEl('<div><input ng-model="result" uib-typeahead="item for item in source | filter:$viewValue" typeahead-append-to-body="true"></div>');
+      element.remove();
+
+      expect(window.removeEventListener).toHaveBeenCalledWith('resize', jasmine.any(Function));
+      expect(document.body.removeEventListener).toHaveBeenCalledWith('scroll', jasmine.any(Function));
+    });
+  });
 });
 
 /* Deprecation tests below */

src/typeahead/typeahead.js

@@ -359,6 +359,11 @@ angular.module('ui.bootstrap.typeahead', ['ui.bootstrap.position'])
       if (appendToBody || appendToElementId) {
         $popup.remove();
       }
+
+      if (appendToBody) {
+        angular.element($window).unbind('resize', fireRecalculating);
+        $document.find('body').unbind('scroll', fireRecalculating);
+      }
       // Prevent jQuery cache memory leak
       popUpEl.remove();
     });
@@ -937,6 +942,11 @@ angular.module('ui.bootstrap.typeahead')
           if (appendToBody || appendToElementId) {
             $popup.remove();
           }
+
+          if (appendToBody) {
+            angular.element($window).unbind('resize', fireRecalculating);
+            $document.find('body').unbind('scroll', fireRecalculating);
+          }
           // Prevent jQuery cache memory leak
           popUpEl.remove();
         });