fix(ui-state): update ui-sref-active/eq info

when ui-state dynamicly changes watchers, make sure to update the ui-sref-active/eq
Closes #2488

Author: christopherthielen

src/stateDirectives.js

@@ -173,12 +173,17 @@ function $StateRefDynamicDirective($state, $timeout) {
       var group  = [attrs.uiState, attrs.uiStateParams || null, attrs.uiStateOpts || null];
       var watch  = '[' + group.map(function(val) { return val || 'null'; }).join(', ') + ']';
       var def    = { state: null, params: null, options: null, href: null };
+      var unlinkInfoFn = null;
 
       function runStateRefLink (group) {
         def.state = group[0]; def.params = group[1]; def.options = group[2];
         def.href = $state.href(def.state, def.params, def.options);
 
-        if (active) active.$$addStateInfo(def.state, def.params);
+        if (unlinkInfoFn) {
+          unlinkInfoFn();
+          unlinkInfoFn = null;
+        }
+        if (active) unlinkInfoFn = active.$$addStateInfo(def.state, def.params);
         if (def.href) attrs.$set(type.attr, def.href);
       }
 
@@ -319,8 +324,9 @@ function $StateRefActiveDirective($state, $stateParams, $interpolate) {
         if (isObject(uiSrefActive) && states.length > 0) {
           return;
         }
-        addState(newState, newParams, uiSrefActive);
+        var deregister = addState(newState, newParams, uiSrefActive);
         update();
+        return deregister;
       };
 
       $scope.$on('$stateChangeSuccess', update);
@@ -329,13 +335,19 @@ function $StateRefActiveDirective($state, $stateParams, $interpolate) {
         var state = $state.get(stateName, stateContext($element));
         var stateHash = createStateHash(stateName, stateParams);
 
-        states.push({
+        var stateInfo = {
           state: state || { name: stateName },
           params: stateParams,
           hash: stateHash
-        });
+        };
 
+        states.push(stateInfo);
         activeClasses[stateHash] = activeClass;
+
+        return function removeState() {
+          var idx = states.indexOf(stateInfo);
+          if (idx !== -1) states.splice(idx, 1);
+        };
       }
 
       /**

test/stateDirectivesSpec.js

@@ -292,10 +292,11 @@ describe('uiStateRef', function() {
   });
 
   describe('links with dynamic state definitions', function () {
-    var template;
+    var template, $state;
 
-    beforeEach(inject(function($rootScope, $compile, $state) {
-      el = angular.element('<a ui-state="state" ui-state-params="params">state</a>');
+    beforeEach(inject(function($rootScope, $compile, _$state_) {
+      $state = _$state_;
+      el = angular.element('<a ui-sref-active="active" ui-sref-active-eq="activeeq" ui-state="state" ui-state-params="params">state</a>');
       scope = $rootScope;
       angular.extend(scope, { state: 'contacts', params: {} });
       template = $compile(el)(scope);
@@ -326,6 +327,38 @@ describe('uiStateRef', function() {
       expect(angular.element(template[0]).attr('href')).toBe('#/contacts');
     });
 
+    it('updates a linked ui-sref-active', inject(function ($timeout) {
+      function tick() { scope.$digest(); try { $timeout.flush(); } catch (error) { } }
+      expect(template[0].className).not.toContain('active');
+      expect(template[0].className).not.toContain('activeeq');
+
+      $state.go('contacts');
+      tick();
+      expect(template[0].className).toContain('active activeeq');
+
+      scope.state = 'contacts.item';
+      scope.params = { id: 5 };
+      tick();
+      expect(template[0].className).not.toContain('active');
+      expect(template[0].className).not.toContain('activeeq');
+
+      $state.go('contacts.item', { id: -5 });
+      tick();
+      expect(template[0].className).not.toContain('active');
+      expect(template[0].className).not.toContain('activeeq');
+
+      $state.go('contacts.item', { id: 5 });
+      tick();
+      expect(template[0].className).toContain('active activeeq');
+
+      scope.state = 'contacts';
+      scope.params = { };
+      tick();
+      expect(template[0].className).toContain('active');
+      expect(template[0].className).not.toContain('activeeq');
+
+    }));
+
     it('accepts param overrides', inject(function ($compile) {
       el = angular.element('<a ui-state="state" ui-state-params="params">state</a>');
       scope.state  = 'contacts.item';