feat(timezone) Add support for moment-timezone

By default timezone is local (i.e. functionality is same as before), but may be changed with moment-timezone extension (http://momentjs.com/timezone/docs/#/using-timezones/default-timezone/)

Author: dalelotts

package.json

@@ -58,6 +58,7 @@
     "karma-threshold-reporter": "^0.1.12",
     "lodash": "^4.5.0",
     "matchdep": "^1.0.1",
+    "moment-timezone": "^0.5.0",
     "phantomjs-prebuilt": "^2.1.4",
     "plato": "^1.5.0",
     "run-browser": "^2.0.2",

paths.js

@@ -4,6 +4,7 @@ var modules = [
   'node_modules/jquery/dist/jquery.js',
   'node_modules/moment/moment.js',
   'node_modules/moment/locale/*.js',
+  'node_modules/moment-timezone/builds/moment-timezone-with-data.js',
   'node_modules/bootstrap/dist/js/bootstrap.js',
   'node_modules/angular/angular.js',
   'node_modules/angular-mocks/angular-mocks.js'

src/js/datetimepicker.js

@@ -315,13 +315,13 @@
             // No additional work needed
             break;
           case 'moment':
-            newDate = moment(newDate);
+            newDate = moment([tempDate.getUTCFullYear(), tempDate.getUTCMonth(), tempDate.getUTCDate(), tempDate.getUTCHours(), tempDate.getUTCMinutes(), tempDate.getUTCSeconds(), tempDate.getUTCMilliseconds()]);
             break;
           case 'milliseconds':
             newDate = milliseconds;
             break;
           default: // It is assumed that the modelType is a formatting string.
-            newDate = moment(newDate).format(configuration.modelType);
+            newDate = moment([tempDate.getUTCFullYear(), tempDate.getUTCMonth(), tempDate.getUTCDate(), tempDate.getUTCHours(), tempDate.getUTCMinutes(), tempDate.getUTCSeconds(), tempDate.getUTCMilliseconds()]).format(configuration.modelType);
         }
 
         var oldDate = ngModelController.$modelValue;

test/model/modelType.spec.js

@@ -18,6 +18,7 @@ describe('modelType', function () {
     $compile = _$compile_;
     $rootScope = _$rootScope_;
     $rootScope.date = null;
+    moment.tz.setDefault(null);
   }));
 
   describe('throws exception', function () {
@@ -142,6 +143,32 @@ describe('modelType', function () {
 
       expect(moment('1999-01-01').isSame($rootScope.date)).toBeTruthy();
     });
+    it('returns a moment with correct time zone', function () {
+
+      $rootScope.date = 1132185600000;   // '2005-11-17'
+      moment.tz.setDefault('America/Los_Angeles');
+
+      var element = $compile('<datetimepicker data-ng-model="date" data-datetimepicker-config="{ modelType: \'moment\', startView: \'year\', minView: \'year\' }"></datetimepicker>')($rootScope);
+      $rootScope.$digest();
+
+      var selectedElement = jQuery(jQuery('.year', element)[0]);
+      selectedElement.trigger('click');
+
+      expect(moment('1999-01-01T00:00:00-08:00').isSame($rootScope.date)).toBeTruthy();
+    });
+    it('returns a moment with correct time zone', function () {
+
+      $rootScope.date = 1132185600000;   // '2005-11-17'
+      moment.tz.setDefault('America/New_York');
+
+      var element = $compile('<datetimepicker data-ng-model="date" data-datetimepicker-config="{ modelType: \'moment\', startView: \'year\', minView: \'year\' }"></datetimepicker>')($rootScope);
+      $rootScope.$digest();
+
+      var selectedElement = jQuery(jQuery('.year', element)[0]);
+      selectedElement.trigger('click');
+
+      expect(moment('1999-01-01T00:00:00-05:00').isSame($rootScope.date)).toBeTruthy();
+    });
     it('throws an exception if invalid date string is in the model', function () {
 
       $rootScope.date = 'invalid-date';
@@ -263,6 +290,32 @@ describe('modelType', function () {
 
       expect($rootScope.date).toBe('gibb5ri012');
     });
+    it('returns formatted string in correct time zone', function () {
+
+      $rootScope.date = moment('2005-11-17').toDate();
+      moment.tz.setDefault('America/Los_Angeles');
+
+      var element = $compile('<datetimepicker data-ng-model="date" data-datetimepicker-config="{ modelType: \'MM-DD-YYYY Z\', startView: \'year\', minView: \'year\' }"></datetimepicker>')($rootScope);
+      $rootScope.$digest();
+
+      var selectedElement = jQuery(jQuery('.year', element)[0]);
+      selectedElement.trigger('click');
+
+      expect($rootScope.date).toBe('01-01-1999 -08:00');
+    });
+    it('returns formatted string in correct time zone', function () {
+
+      $rootScope.date = moment('2005-11-17').toDate();
+      moment.tz.setDefault('America/New_York');
+
+      var element = $compile('<datetimepicker data-ng-model="date" data-datetimepicker-config="{ modelType: \'MM-DD-YYYY Z\', startView: \'year\', minView: \'year\' }"></datetimepicker>')($rootScope);
+      $rootScope.$digest();
+
+      var selectedElement = jQuery(jQuery('.year', element)[0]);
+      selectedElement.trigger('click');
+
+      expect($rootScope.date).toBe('01-01-1999 -05:00');
+    });
     it('throws an exception if numeric string is in the model', function () {
 
       $rootScope.date = '1132185600000';