[ADF-2415] PDF Viewer - open password protected pdf files (#3022)

* pdf password dialog

* PDF viewer onPassword test

* pdf password dialog

* PDF viewer onPassword test

* test

* test

* test

* test

* test

* test

* test

* fix password test

* travis improvements

lib/core/viewer/components/pdfViewer.component.ts

@@ -28,6 +28,8 @@ import {
 } from '@angular/core';
 import { LogService } from '../../services/log.service';
 import { RenderingQueueServices } from '../services/rendering-queue.services';
+import { PdfPasswordDialogComponent } from './pdfViewer-password-dialog';
+import { MatDialog } from '@angular/material';
 
 declare let PDFJS: any;
 
@@ -92,8 +94,10 @@ export class PdfViewerComponent implements OnChanges, OnDestroy {
         return Math.round(this.currentScale * 100) + '%';
     }
 
-    constructor(private renderingQueueServices: RenderingQueueServices,
-                private logService: LogService) {
+    constructor(
+        private dialog: MatDialog,
+        private renderingQueueServices: RenderingQueueServices,
+        private logService: LogService) {
         // needed to preserve "this" context
         this.onPageChange = this.onPageChange.bind(this);
         this.onPagesLoaded = this.onPagesLoaded.bind(this);
@@ -124,6 +128,10 @@ export class PdfViewerComponent implements OnChanges, OnDestroy {
     executePdf(src) {
         this.loadingTask = this.getPDFJS().getDocument(src);
 
+        this.loadingTask.onPassword = (callback, reason) => {
+            this.onPdfPassword(callback, reason);
+        };
+
         this.loadingTask.onProgress = (progressData) => {
             let level = progressData.loaded / progressData.total;
             this.loadingPercent = Math.round(level * 100);
@@ -397,6 +405,20 @@ export class PdfViewerComponent implements OnChanges, OnDestroy {
         this.displayPage = event.pageNumber;
     }
 
+    onPdfPassword(callback, reason) {
+        this.dialog
+            .open(PdfPasswordDialogComponent, {
+                width: '400px',
+                disableClose: true,
+                data: { reason }
+            })
+            .afterClosed().subscribe(password => {
+                if (password) {
+                    callback(password);
+                }
+            });
+    }
+
     /**
      * Page Rendered Event
      */