SHIBUI-814 Adding directive

ui/src/app/app.component.spec.ts

@@ -7,7 +7,7 @@ import { AppComponent } from './app.component';
 import * as fromRoot from './core/reducer';
 import { NotificationModule } from './notification/notification.module';
 import { NgbDropdownModule } from '@ng-bootstrap/ng-bootstrap';
-import { MockI18nPipe, MockI18nService } from '../testing/i18n.stub';
+import { MockTranslatePipe, MockI18nService } from '../testing/i18n.stub';
 import { I18nService } from './i18n/service/i18n.service';
 
 @Component({
@@ -43,7 +43,7 @@ describe('AppComponent', () => {
             declarations: [
                 AppComponent,
                 TestHostComponent,
-                MockI18nPipe
+                MockTranslatePipe
             ],
         }).compileComponents();
 

ui/src/app/i18n/directive/translate.directive.ts

@@ -0,0 +1,55 @@
+import {
+    AfterViewChecked,
+    ChangeDetectorRef,
+    Directive,
+    ElementRef,
+    Input,
+    OnDestroy
+} from '@angular/core';
+import { Subscription } from 'rxjs';
+import { I18nService } from '../service/i18n.service';
+import * as fromI18n from '../reducer';
+import { Store } from '@ngrx/store';
+import { Messages } from '../model/Messages';
+
+@Directive({
+    selector: '[translate]'
+})
+export class TranslateDirective implements OnDestroy {
+    key: string;
+    lastParams: any;
+    currentParams: any;
+    messages: Messages;
+    sub: Subscription;
+
+    @Input() set translate(key: string) {
+        if (key) {
+            this.key = key;
+            this.update();
+        }
+    }
+
+    @Input() set translateParams(params: any) {
+        this.currentParams = params || {};
+        this.update();
+    }
+
+    constructor(
+        private service: I18nService,
+        private store: Store<fromI18n.State>,
+        private element: ElementRef,
+        private _ref: ChangeDetectorRef
+    ) {
+        this.sub = this.store.select(fromI18n.getMessages).subscribe(m => this.messages = m);
+    }
+
+    update(): void {
+        this.element.nativeElement.textContent = this.service.translate(this.key, this.currentParams, this.messages);
+    }
+
+    ngOnDestroy() {
+        if (this.sub) {
+            this.sub.unsubscribe();
+        }
+    }
+}

ui/src/app/i18n/i18n.module.ts

@@ -7,13 +7,16 @@ import { reducers } from './reducer';
 import { HttpClientModule } from '@angular/common/http';
 import { I18nService } from './service/i18n.service';
 import { MessageEffects } from './effect/message.effect';
-import { I18nPipe } from './pipe/i18n.pipe';
+import { TranslatePipe } from './pipe/i18n.pipe';
 import { CoreModule } from '../core/core.module';
+import { TranslateDirective } from './directive/translate.directive';
 
 export const COMPONENTS = [];
-export const DIRECTIVES = [];
+export const DIRECTIVES = [
+    TranslateDirective
+];
 export const PIPES = [
-    I18nPipe
+    TranslatePipe
 ];
 
 @NgModule({

ui/src/app/i18n/model/Messages.ts

@@ -0,0 +1,3 @@
+export interface Messages {
+    [key: string]: string;
+}

ui/src/app/i18n/pipe/i18n.pipe.spec.ts

@@ -1,4 +1,4 @@
-import { I18nPipe } from './i18n.pipe';
+import { TranslatePipe } from './i18n.pipe';
 import { I18nService } from '../service/i18n.service';
 import { CommonModule } from '@angular/common';
 import { StoreModule, combineReducers, Store } from '@ngrx/store';
@@ -10,7 +10,7 @@ import { MessagesLoadSuccessAction } from '../action/message.action';
 
 @Component({
     template: `
-        <span>{{ foo | i18n:{ foo: 'bar' } }}</span>
+        <span>{{ foo | translate:{ foo: 'bar' } }}</span>
     `
 })
 class TestHostComponent {
@@ -49,7 +49,7 @@ describe('Pipe: I18n translation', () => {
                 })
             ],
             declarations: [
-                I18nPipe,
+                TranslatePipe,
                 TestHostComponent
             ],
         });

ui/src/app/i18n/pipe/i18n.pipe.ts

@@ -5,17 +5,15 @@ import { Subscription } from 'rxjs';
 import { I18nService } from '../service/i18n.service';
 
 @Pipe({
-    name: 'i18n',
+    name: 'translate',
     pure: false
 })
-export class I18nPipe implements PipeTransform, OnDestroy {
+export class TranslatePipe implements PipeTransform, OnDestroy {
 
     sub: Subscription;
 
     messages: { [propName: string]: string } = {};
 
-    value: string;
-
     constructor(
         private store: Store<fromI18n.State>,
         private i18nService: I18nService,
@@ -28,10 +26,7 @@ export class I18nPipe implements PipeTransform, OnDestroy {
     }
 
     transform(value: string, interpolated: { [prop: string]: string } = {}): any {
-        interpolated = interpolated || {};
-        let val = this.messages.hasOwnProperty(value) ? this.messages[value] : value;
-        this.value = this.i18nService.interpolate(val, interpolated);
-        return this.value;
+        return this.i18nService.translate(value, interpolated, this.messages);
     }
 
     ngOnDestroy(): void {

ui/src/app/i18n/service/i18n.service.ts

@@ -3,6 +3,7 @@ import { Observable } from 'rxjs';
 import { HttpClient, HttpParams } from '@angular/common/http';
 import { NavigatorService } from '../../core/service/navigator.service';
 import { getCurrentLanguage, getCurrentCountry, getCurrentLocale } from '../../shared/util';
+import { Messages } from '../model/Messages';
 
 @Injectable()
 export class I18nService {
@@ -35,6 +36,12 @@ export class I18nService {
         return getCurrentLocale(this.navigator.native);
     }
 
+    translate(value: string, interpolated: any, messages: Messages): string {
+        interpolated = interpolated || {};
+        let val = messages.hasOwnProperty(value) ? messages[value] : value;
+        return this.interpolate(val, interpolated);
+    }
+
     interpolate(value: string, interpolated: { [prop: string]: string } = {}): string {
         return Object.entries(interpolated).reduce((current, interpolate) => {
             let reg = new RegExp(`{\\s*${interpolate[0]}\\s*}`, 'gm');

ui/src/testing/i18n.stub.ts

@@ -9,7 +9,7 @@ import { Observable, of } from 'rxjs';
     name: 'i18n',
     pure: false
 })
-export class MockI18nPipe implements PipeTransform {
+export class MockTranslatePipe implements PipeTransform {
 
     constructor() {}