[ADF-1999] i18n support for file size pipe (#2803)

* i18n support for fileSize pipe

* remove unused declaration

* update unit test

lib/core/datatable/components/datatable/filesize-cell.component.ts

@@ -15,12 +15,11 @@
  * limitations under the License.
  */
 
-import { ChangeDetectionStrategy, Component, ViewEncapsulation } from '@angular/core';
+import { Component, ViewEncapsulation } from '@angular/core';
 import { DataTableCellComponent } from './datatable-cell.component';
 
 @Component({
     selector: 'adf-filesize-cell',
-    changeDetection: ChangeDetectionStrategy.OnPush,
     template: `
         <ng-container>
             <span [title]="tooltip">{{ value | adfFileSize }}</span>

lib/core/i18n/en.json

@@ -1,5 +1,16 @@
 {
   "CORE": {
+    "FILE_SIZE": {
+      "BYTES": "Bytes",
+      "KB": "KB",
+      "MB": "MB",
+      "GB": "GB",
+      "TB": "TB",
+      "PB": "PB",
+      "EB": "EB",
+      "ZB": "ZB",
+      "YB": "YB"
+    },
     "PAGINATION": {
       "ITEMS_RANGE": "Showing {{ range }} of {{ total }}",
       "ITEMS_PER_PAGE": "Items per page",

lib/core/i18n/ru.json

@@ -1,5 +1,16 @@
 {
   "CORE": {
+    "FILE_SIZE": {
+      "BYTES": "Б",
+      "KB": "кБ",
+      "MB": "МБ",
+      "GB": "ГБ",
+      "TB": "ТБ",
+      "PB": "ПБ",
+      "EB": "ЭБ",
+      "ZB": "ЗБ",
+      "YB": "ЙБ"
+    },
     "PAGINATION": {
       "ITEMS_RANGE": "Отображается {{ range }} из {{ total }}",
       "ITEMS_PER_PAGE": "Элементов на странице",

lib/core/pipes/file-size.pipe.spec.ts

@@ -22,7 +22,23 @@ describe('FileSizePipe', () => {
     let pipe: FileSizePipe;
 
     beforeEach(() => {
-        pipe = new FileSizePipe();
+        const translation: any = {
+            instant(key) {
+                const enUs = {
+                    'CORE.FILE_SIZE.BYTES': 'Bytes',
+                    'CORE.FILE_SIZE.KB': 'KB',
+                    'CORE.FILE_SIZE.MB': 'MB',
+                    'CORE.FILE_SIZE.GB': 'GB',
+                    'CORE.FILE_SIZE.TB': 'TB',
+                    'CORE.FILE_SIZE.PB': 'PB',
+                    'CORE.FILE_SIZE.EB': 'EB',
+                    'CORE.FILE_SIZE.ZB': 'ZB',
+                    'CORE.FILE_SIZE.YB': 'YB'
+                };
+                return enUs[key];
+            }
+        };
+        pipe = new FileSizePipe(translation);
     });
 
     it('returns empty string with invalid input', () => {

lib/core/pipes/file-size.pipe.ts

@@ -16,12 +16,17 @@
  */
 
 import { Pipe, PipeTransform } from '@angular/core';
+import { TranslationService } from '../services/translation.service';
 
 @Pipe({
-    name: 'adfFileSize'
+    name: 'adfFileSize',
+    pure: false
 })
 export class FileSizePipe implements PipeTransform {
 
+    constructor(private translation: TranslationService) {
+    }
+
     transform(bytes: number, decimals: number = 2): string {
         if (bytes == null || bytes === undefined) {
             return '';
@@ -33,10 +38,12 @@ export class FileSizePipe implements PipeTransform {
 
         const k = 1024,
             dm = decimals || 2,
-            sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],
+            sizes = ['BYTES', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],
             i = Math.floor(Math.log(bytes) / Math.log(k));
 
-        return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
+        const i18nSize = this.translation.instant(`CORE.FILE_SIZE.${sizes[i]}`);
+
+        return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + i18nSize;
     }
 
 }

lib/core/services/translation.service.ts

@@ -91,4 +91,8 @@ export class TranslationService {
     get(key: string|Array<string>, interpolateParams?: Object): Observable<string|any> {
         return this.translate.get(key, interpolateParams);
     }
+
+    instant(key: string | Array<string>, interpolateParams?: Object): string | any {
+        return this.translate.instant(key, interpolateParams);
+    }
 }