check browser locale and add locale setting to profile

ui/src/app/app.config.js

@@ -15,6 +15,7 @@
  */
 import injectTapEventPlugin from 'react-tap-event-plugin';
 import UrlHandler from './url.handler';
+import addLocaleKorean from './locale/locale.constant-ko';
 
 /* eslint-disable import/no-unresolved, import/default */
 
@@ -48,6 +49,14 @@ export default function AppConfig($provide,
     $translateProvider.useMissingTranslationHandlerLog();
     $translateProvider.addInterpolation('$translateMessageFormatInterpolation');
 
+    addLocaleKorean(locales);
+    var $window = angular.injector(['ng']).get('$window');
+    var lang = $window.navigator.language || $window.navigator.userLanguage;
+    if (lang === 'ko') {
+        $translateProvider.useSanitizeValueStrategy(null);
+        $translateProvider.preferredLanguage('ko_KR');
+    }
+
     for (var langKey in locales) {
         var translationTable = locales[langKey];
         $translateProvider.translations(langKey, translationTable);

ui/src/app/locale/locale.constant.js

@@ -774,6 +774,11 @@ export default angular.module('thingsboard.locale', [])
                     "create-new-widget-type": "Create new widget type",
                     "widget-type-file": "Widget type file",
                     "invalid-widget-type-file-error": "Unable to import widget type: Invalid widget type data structure."
+                },
+                "language": {
+                    "language": "Language",
+                    "en_US": "English",
+                    "ko_KR": "Korean"
                 }
             }
         }

ui/src/app/profile/profile.controller.js

@@ -20,25 +20,29 @@ import changePasswordTemplate from './change-password.tpl.html';
 /* eslint-enable import/no-unresolved, import/default */
 
 /*@ngInject*/
-export default function ProfileController(userService, $scope, $document, $mdDialog) {
+export default function ProfileController(userService, $scope, $document, $mdDialog, $translate) {
     var vm = this;
 
     vm.profileUser = {};
 
     vm.save = save;
     vm.changePassword = changePassword;
+    vm.languageList = {en_US: {value: "en_US", name: "language.en_US"}, ko_KR: {value : "ko_KR", name: "language.ko_KR"}};
 
     loadProfile();
 
     function loadProfile() {
         userService.getUser(userService.getCurrentUser().userId).then(function success(user) {
             vm.profileUser = user;
+            vm.profileUser.lang = $translate.use();
         });
     }
 
     function save() {
         userService.saveUser(vm.profileUser).then(function success(user) {
+            $translate.use(vm.profileUser.lang);
             vm.profileUser = user;
+            vm.profileUser.lang = $translate.use();
             $scope.theForm.$setPristine();
         });
     }

ui/src/app/profile/profile.tpl.html

@@ -40,6 +40,14 @@
                         <label translate>user.last-name</label>
                         <input name="lastName" ng-model="vm.profileUser.lastName">
                     </md-input-container>
+                    <md-input-container class="md-block">
+                        <label translate>language.language</label>
+                        <md-select name="language" ng-model="vm.profileUser.lang">
+                            <md-option ng-repeat="lang in vm.languageList" ng-value="lang.value">
+                                {{lang.name | translate}}
+                            </md-option>
+                        </md-select>
+                    </md-input-container>
                     <md-button ng-disabled="loading" ng-click="vm.changePassword($event)"
                                class="md-raised md-primary">{{ 'profile.change-password' | translate }}
                     </md-button>