fix lazy-loaded translations in admin module

package.json

@@ -21,14 +21,13 @@
     "font-awesome": "4.7.0",
     "jquery": "3.3.1",
     "moment": "2.21.0",
-    "ng-jhipster": "0.4.2",
+    "ng-jhipster": "0.4.5",
     "ngx-cookie": "2.0.1",
     "ngx-infinite-scroll": "0.5.1",
     "ngx-webstorage": "2.0.1",
     "reflect-metadata": "0.1.12",
     "rxjs": "5.5.6",
     "swagger-ui": "2.2.10",
-    "tether": "1.4.3",
     "tslib": "1.9.0",
     "zone.js": "0.8.20"
   },
@@ -41,7 +40,7 @@
     "angular-router-loader": "0.8.2",
     "angular2-template-loader": "0.6.2",
     "browser-sync": "2.23.6",
-    "browser-sync-webpack-plugin": "2.0.1",
+    "browser-sync-webpack-plugin": "2.2.2",
     "cache-loader": "1.2.2",
     "codelyzer": "4.2.1",
     "copy-webpack-plugin": "4.5.1",

src/main/webapp/app/admin/admin.module.ts

@@ -1,6 +1,7 @@
 import { NgModule, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
 import { RouterModule } from '@angular/router';
-
+import { JhiLanguageService } from 'ng-jhipster';
+import { JhiLanguageHelper } from 'app/core';
 import { JhipsterSharedModule } from 'app/shared';
 /* jhipster-needle-add-admin-module-import - JHipster will add admin modules imports here */
 
@@ -67,4 +68,8 @@ import {
   ],
   schemas: [CUSTOM_ELEMENTS_SCHEMA]
 })
-export class JhipsterAdminModule {}
+export class JhipsterAdminModule {
+  constructor(private languageService: JhiLanguageService, private languageHelper: JhiLanguageHelper) {
+    this.languageHelper.language.subscribe((languageKey: string) => this.languageService.changeLanguage(languageKey));
+  }
+}

src/main/webapp/app/core/language/language.helper.ts

@@ -2,12 +2,14 @@ import { Injectable, RendererFactory2, Renderer2 } from '@angular/core';
 import { Title } from '@angular/platform-browser';
 import { Router, ActivatedRouteSnapshot } from '@angular/router';
 import { TranslateService, LangChangeEvent } from '@ngx-translate/core';
+import { BehaviorSubject, Observable } from 'rxjs';
 
 import { LANGUAGES } from 'app/core/language/language.constants';
 
 @Injectable()
 export class JhiLanguageHelper {
   renderer: Renderer2 = null;
+  private _language: BehaviorSubject<string>;
 
   constructor(
     private translateService: TranslateService,
@@ -16,6 +18,7 @@ export class JhiLanguageHelper {
     private titleService: Title,
     private router: Router
   ) {
+    this._language = new BehaviorSubject<string>(this.translateService.currentLang);
     this.renderer = rootRenderer.createRenderer(document.querySelector('html'), null);
     this.init();
   }
@@ -24,6 +27,10 @@ export class JhiLanguageHelper {
     return Promise.resolve(LANGUAGES);
   }
 
+  get language(): Observable<string> {
+    return this._language.asObservable();
+  }
+
   /**
    * Update the window title using params in the following
    * order:
@@ -43,6 +50,7 @@ export class JhiLanguageHelper {
 
   private init() {
     this.translateService.onLangChange.subscribe((event: LangChangeEvent) => {
+      this._language.next(this.translateService.currentLang);
       this.renderer.setAttribute(document.querySelector('html'), 'lang', this.translateService.currentLang);
       this.updateTitle();
     });