[ADF-2137] Document Thumbnail Pane (#2943)

* pdf thumbnails

* update TestBed declarations

* add PdfViewerService to TestBed

* content projection

* update TestBed declaration

* update TestBed

* update TestBed

* docs

* pristine

* added doc component image

* use global PDFJS instance fro tests

docs/viewer.component.md

@@ -69,6 +69,8 @@ Using with file url:
 | showSidebar | `boolean` | `false` | Toggles sidebar visibility. Requires `allowSidebar` to be set to `true`.  |
 | sidebarPosition | `string` | `'right'` | The position of the sidebar. Can be `left` or `right`.  |
 | sidebarTemplate | `TemplateRef<any>` | `null` | The template for the sidebar. The template context contains the loaded node data.  |
+| allowThumbnails | `boolean` | `true` | Enables pdf viewer thumbnails.  |
+| thumbnailsTemplate | `TemplateRef<any>` | `null` | Custom template content for thumbnails.  |
 | mimeType | `string` |  | MIME type of the file content (when not determined by the filename extension).  |
 | fileName | `string` |  | Content filename.  |
 | downloadUrl | `string` | `null` | URL to download.  |
@@ -279,6 +281,38 @@ Everything you put inside the "adf-viewer-sidebar" tags is going to be rendered.
 <adf-viewer [allowSidebar]="true" [sidebarTemplate]="sidebarTemplate"></adf-viewer>
 ```
 
+### Custom thumbnails
+
+By default, the pdf viewer comes with its own thumbnails list but this can be replaced
+by providing a custom template and binding to context property `viewer` to access PDFJS.PDFViewer
+instance.
+
+![PDF thumbnails](docassets/images/pdf-thumbnails.png)
+
+#### Using template injection
+
+```javascript
+import { Component, Input } from '@angular/core';
+
+@Component({
+    selector: 'custom-thumbnails',
+    template: '<p> Custom Thumbnails Component </p>'
+})
+export class CustomThumbnailsComponent {
+    @Input() pdfViewer: any;
+
+    ...
+}
+```
+
+```html
+<ng-template let-pdfViewer="viewer" #customThumbnailsTemplate>
+    <custom-thumbnails [pdfViewer]="pdfViewer"></custom-thumbnails>
+</ng-template>
+
+<adf-viewer [thumbnailsTemplate]="customThumbnailsTemplate"></adf-viewer>
+```
+
 ### Custom "Open With" menu
 
 You can enable custom "Open With" menu by providing at least one action inside the "adf-viewer-open-with" tag:

lib/core/i18n/en.json

@@ -210,6 +210,9 @@
     "LOADING": "Loading",
     "UNKNOWN_FORMAT": "Couldn't load preview",
     "SIDEBAR": {
+      "THUMBNAILS": {
+        "PAGE": "Page {{ pageNum }}"
+      },
       "METADATA": {
           "MORE_INFORMATION": "More information",
           "LESS_INFORMATION": "Less information"

lib/core/styles/_index.scss

@@ -18,6 +18,7 @@
 @import '../userinfo/components/user-info.component';
 @import '../viewer/components/viewer.component';
 @import '../viewer/components/pdfViewer.component';
+@import '../viewer/components/pdfViewer-thumbnails.component';
 @import '../viewer/components/txtViewer.component';
 @import '../viewer/components/imgViewer.component';
 @import '../form/components/form.component';
@@ -42,6 +43,7 @@
     @include adf-userinfo-theme($theme);
     @include adf-viewer-theme($theme);
     @include adf-pdf-viewer-theme($theme);
+    @include adf-pdf-thumbnails-theme($theme);
     @include adf-image-viewer-theme($theme);
     @include adf-text-viewer-theme($theme);
     @include adf-form-component-theme($theme);

lib/core/viewer/components/pdfViewer-thumb.component.html

@@ -0,0 +1,4 @@
+<ng-container *ngIf="image$ | async as image">
+    <img [src]="image"
+        title="{{ 'ADF_VIEWER.SIDEBAR.THUMBNAILS.PAGE' | translate: { pageNum: page.id } }}">
+</ng-container>

lib/core/viewer/components/pdfViewer-thumb.component.spec.ts

@@ -0,0 +1,62 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { DomSanitizer } from '@angular/platform-browser';
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { PdfThumbComponent } from './pdfViewer-thumb.component';
+
+describe('PdfThumbComponent', () => {
+
+    let fixture: ComponentFixture<PdfThumbComponent>;
+    let component: PdfThumbComponent;
+    const domSanitizer = {
+        bypassSecurityTrustUrl: () => 'image-data'
+    };
+    const page = {
+        id: 'pageId',
+        getPage: jasmine.createSpy('getPage').and.returnValue(Promise.resolve({
+            getViewport: () => ({ height: 0, width: 0 }),
+            render: jasmine.createSpy('render').and.returnValue(Promise.resolve())
+        }))
+    };
+
+    beforeEach(async(() => {
+        TestBed.configureTestingModule({
+            declarations: [
+                PdfThumbComponent
+            ],
+            providers: [
+                { provide: DomSanitizer, useValue: domSanitizer }
+            ]
+        }).compileComponents()
+            .then(() => {
+                fixture = TestBed.createComponent(PdfThumbComponent);
+                component = fixture.componentInstance;
+            });
+    }));
+
+    it('should have resolve image data', (done) => {
+        component.page = page;
+        fixture.detectChanges();
+
+        component.image$.then((result) => {
+            expect(result).toBe('image-data');
+            done();
+        });
+    });
+
+});

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

@@ -0,0 +1,62 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Component, Input, OnInit, ElementRef, ViewEncapsulation } from '@angular/core';
+import { DomSanitizer } from '@angular/platform-browser';
+
+@Component({
+    selector: 'adf-pdf-thumb',
+    templateUrl: './pdfViewer-thumb.component.html',
+    encapsulation: ViewEncapsulation.None
+})
+export class PdfThumbComponent implements OnInit {
+    @Input('page') page: any = null;
+
+    image$: Promise<string>;
+
+    constructor(
+        private element: ElementRef, private sanitizer: DomSanitizer) {}
+
+    ngOnInit() {
+        this.image$ = this.page.getPage().then((page) => this.getThumb(page));
+    }
+
+    private getThumb(page): Promise<string> {
+        const canvas = this.getCanvas();
+        const viewport = page.getViewport(1);
+        const scale = Math.min((canvas.height / viewport.height), (canvas.width / viewport.width));
+
+        return page.render({
+            canvasContext: canvas.getContext('2d'),
+            viewport: page.getViewport(scale)
+        })
+        .then(() => {
+            const imageSource = canvas.toDataURL();
+            return this.sanitizer.bypassSecurityTrustUrl(imageSource);
+        });
+    }
+
+    private getCanvas(): HTMLCanvasElement {
+        const elementRect = this.element.nativeElement.getBoundingClientRect();
+        const canvas = document.createElement('canvas');
+
+        canvas.width = elementRect.width;
+        canvas.height = elementRect.height;
+
+        return canvas;
+    }
+}

lib/core/viewer/components/pdfViewer-thumbnails.component.html

@@ -0,0 +1,10 @@
+<div class="pdf-thumbnails__content"
+    [style.height.px]="virtualHeight"
+    [style.transform]="'translate(-50%, ' + translateY + 'px)'">
+    <adf-pdf-thumb *ngFor="let page of renderItems; trackBy: trackByFn"
+        class="pdf-thumbnails__thumb"
+        [ngClass]="{'pdf-thumbnails__thumb--selected' : isSelected(page.id)}"
+        [page]="page"
+        (click)="goTo(page.id)">
+    </adf-pdf-thumb>
+</div>

lib/core/viewer/components/pdfViewer-thumbnails.component.scss

@@ -0,0 +1,39 @@
+@mixin adf-pdf-thumbnails-theme($theme) {
+    $background: map-get($theme, background);
+
+    .pdf-thumbnails {
+        display: block;
+        overflow: hidden;
+        overflow-y: auto;
+        height: 100%;
+        position: relative;
+
+        &__content {
+            top: 0;
+            left: 50%;
+            height: 0;
+            position: absolute;
+        }
+
+        &__thumb:first-child {
+            margin-top: 14px;
+        }
+
+        &__thumb {
+            cursor: pointer;
+            display: block;
+            height: 140px;
+            width: 100px;
+            background: mat-color($background, background);
+            margin-bottom: 14px;
+        }
+
+        &__thumb:hover {
+            box-shadow: 0px 0px 5px 0px $black-87-opacity;
+        }
+
+        &__thumb--selected:not(:hover) {
+            box-shadow: 0px 0px 5px 0px $black-87-opacity;
+        }
+    }
+}

lib/core/viewer/components/pdfViewer-thumbnails.component.spec.ts

@@ -0,0 +1,152 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { By } from '@angular/platform-browser';
+import { PdfThumbListComponent } from './pdfViewer-thumbnails.component';
+import { PdfThumbComponent } from './pdfViewer-thumb.component';
+
+declare let PDFJS: any;
+
+describe('PdfThumbListComponent', () => {
+
+    let fixture: ComponentFixture<PdfThumbListComponent>;
+    let component: PdfThumbListComponent;
+
+    const page = (id) => {
+        return  {
+            id,
+            getPage: () => Promise.resolve()
+        };
+    };
+
+    const viewerMock = {
+        _currentPageNumber: null,
+        set currentPageNumber(pageNum) {
+            this._currentPageNumber = pageNum;
+            this.eventBus.dispatch('pagechange', { pageNumber:  pageNum });
+        },
+        get currentPageNumber() { return this._currentPageNumber; },
+        pdfDocument: {
+            getPage: (pageNum) => Promise.resolve({})
+        },
+        _pages: [
+             page(1), page(2), page(3), page(4),
+             page(5), page(6), page(7), page(8),
+             page(9), page(10), page(11), page(12),
+             page(13), page(14), page(15), page(16)
+        ],
+        eventBus: new PDFJS.EventBus()
+    };
+
+    beforeEach(async(() => {
+        TestBed.configureTestingModule({
+            declarations: [
+                PdfThumbListComponent,
+                PdfThumbComponent
+            ]
+        })
+        .compileComponents()
+        .then(() => {
+            fixture = TestBed.createComponent(PdfThumbListComponent);
+            component = fixture.componentInstance;
+
+            component.pdfViewer = viewerMock;
+
+            // provide scrollable container
+            fixture.nativeElement.style.display = 'block';
+            fixture.nativeElement.style.height = '700px';
+            fixture.nativeElement.style.overflow = 'scroll';
+            fixture.debugElement.query(By.css('.pdf-thumbnails__content'))
+                .nativeElement.style.height = '2000px';
+        });
+    }));
+
+    it('should render initial rage of items', () => {
+        fixture.nativeElement.scrollTop = 0;
+        fixture.detectChanges();
+
+        const renderedIds = component.renderItems.map(item => item.id);
+        const rangeIds = viewerMock._pages.slice(0, 5).map(item => item.id);
+
+        expect(renderedIds).toEqual(rangeIds);
+    });
+
+    it('should render next range on scroll', () => {
+        fixture.nativeElement.scrollTop = 700;
+        fixture.detectChanges();
+
+        const renderedIds = component.renderItems.map(item => item.id);
+        const rangeIds = viewerMock._pages.slice(5, 10).map(item => item.id);
+
+        expect(renderedIds).toEqual(rangeIds);
+    });
+
+    it('should render items containing current document page', () => {
+        fixture.nativeElement.scrollTop = 1700;
+        fixture.detectChanges();
+
+        const renderedIds = component.renderItems.map(item => item.id);
+
+        expect(renderedIds).not.toContain(3);
+
+        viewerMock.eventBus.dispatch('pagechange', { pageNumber: 3 });
+
+        const newRenderedIds = component.renderItems.map(item => item.id);
+
+        expect(newRenderedIds).toContain(3);
+    });
+
+    it('should not change items if range contains current document page', () => {
+        fixture.nativeElement.scrollTop = 1700;
+        fixture.detectChanges();
+
+        const renderedIds = component.renderItems.map(item => item.id);
+
+        expect(renderedIds).toContain(12);
+
+        viewerMock.eventBus.dispatch('pagechange', { pageNumber: 12 });
+
+        const newRenderedIds = component.renderItems.map(item => item.id);
+
+        expect(newRenderedIds).toContain(12);
+    });
+
+    it('should return current viewed page as selected', () => {
+        fixture.nativeElement.scrollTop = 0;
+        fixture.detectChanges();
+
+        viewerMock.currentPageNumber = 2;
+
+        expect(component.isSelected(2)).toBe(true);
+    });
+
+    it('should go to selected page', () => {
+        fixture.nativeElement.scrollTop = 0;
+        fixture.detectChanges();
+
+        const renderedIds = component.renderItems.map(item => item.id);
+
+        expect(renderedIds).not.toContain(12);
+
+        component.goTo(12);
+
+        const newRenderedIds = component.renderItems.map(item => item.id);
+
+        expect(newRenderedIds).toContain(12);
+    });
+});

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

@@ -0,0 +1,137 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {
+    Component, Input, ContentChild, TemplateRef, HostListener, OnInit,
+    AfterViewInit, ElementRef, OnDestroy, ViewEncapsulation
+} from '@angular/core';
+
+@Component({
+    selector: 'adf-pdf-thumbnails',
+    templateUrl: './pdfViewer-thumbnails.component.html',
+    styleUrls: ['./pdfViewer-thumbnails.component.scss'],
+    host: { 'class': 'pdf-thumbnails' },
+    encapsulation: ViewEncapsulation.None
+})
+export class PdfThumbListComponent implements OnInit, AfterViewInit, OnDestroy {
+    @Input() pdfViewer: any;
+
+    virtualHeight: number = 0;
+    translateY: number = 0;
+    renderItems = [];
+
+    private items = [];
+    private itemHeight: number = 140;
+
+    @ContentChild(TemplateRef)
+    template: any;
+
+    @HostListener('window:resize', ['$event'])
+    onResize(event) {
+        this.calculateItems();
+    }
+
+    constructor(private element: ElementRef) {
+        this.calculateItems = this.calculateItems.bind(this);
+        this.onPageChange = this.onPageChange.bind(this);
+    }
+
+    ngOnInit() {
+        this.element.nativeElement.addEventListener('scroll', this.calculateItems, true);
+        this.pdfViewer.eventBus.on('pagechange', this.onPageChange);
+
+        this.items = this.getPages();
+        this.calculateItems();
+    }
+
+    ngAfterViewInit() {
+        setTimeout(() => this.scrollInto(this.pdfViewer.currentPageNumber), 0);
+    }
+
+    ngOnDestroy() {
+        this.element.nativeElement.removeEventListener('scroll', this.calculateItems, true);
+        this.pdfViewer.eventBus.off('pagechange', this.onPageChange);
+    }
+
+    trackByFn(index: number, item: any): number {
+        return item.id;
+    }
+
+    isSelected(pageNum: number) {
+        return this.pdfViewer.currentPageNumber === pageNum;
+    }
+
+    goTo(pageNum: number) {
+        this.pdfViewer.currentPageNumber = pageNum;
+    }
+
+    scrollInto(item: any) {
+        if (this.items.length) {
+            const index: number = this.items.findIndex((element) => element.id === item);
+
+            if (index < 0 || index >= this.items.length) {
+                return;
+            }
+
+            this.element.nativeElement.scrollTop = Math.floor(index  - 1 ) * this.itemHeight;
+
+            this.calculateItems();
+        }
+    }
+
+    getPages() {
+        return this.pdfViewer._pages.map((page) => ({
+            id: page.id,
+            getPage: () => this.pdfViewer.pdfDocument.getPage(page.id)
+        }));
+    }
+
+    private calculateItems() {
+        const { element, viewPort, itemsInView } = this.getContainerSetup();
+
+        const indexByScrollTop = element.scrollTop / viewPort * this.items.length / itemsInView;
+
+        const start = Math.floor(indexByScrollTop);
+
+        const end = Math.ceil(indexByScrollTop) + (itemsInView);
+
+        this.translateY = this.itemHeight * Math.ceil(start);
+        this.virtualHeight = this.itemHeight * this.items.length  - this.translateY;
+        this.renderItems = this.items.slice(start, end);
+    }
+
+    private getContainerSetup() {
+        const element = this.element.nativeElement;
+        const elementRec = element.getBoundingClientRect();
+        const itemsInView = Math.ceil(elementRec.height / this.itemHeight);
+        const viewPort = (this.itemHeight * this.items.length) / itemsInView;
+
+        return {
+            element,
+            viewPort,
+            itemsInView
+        };
+    }
+
+    private onPageChange(event) {
+        const index = this.renderItems.findIndex((element) => element.id === event.pageNumber);
+
+        if (index < 0) {
+            this.scrollInto(event.pageNumber);
+        }
+    }
+}

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

@@ -1,9 +1,24 @@
-<div id="viewer-pdf-container" class="viewer-pdf-container" (window:resize)="onResize()">
-    <div id="viewer-viewerPdf" class="pdfViewer">
-        <div id="loader-container" class="loader-container">
-            <div class="loader-item">
-                <mat-progress-bar mode="indeterminate"></mat-progress-bar>
-            </div >
+<div class="adf-pdf-viewer__container">
+    <ng-container *ngIf="showThumbnails">
+        <div class="adf-pdf-viewer__thumbnails">
+            <ng-container *ngIf="thumbnailsTemplate">
+                <ng-container *ngTemplateOutlet="thumbnailsTemplate;context:pdfThumbnailsContext"></ng-container>
+            </ng-container>
+            <ng-container *ngIf="!thumbnailsTemplate">
+                <adf-pdf-thumbnails [pdfViewer]="pdfViewer"></adf-pdf-thumbnails>
+            </ng-container>
+        </div>
+    </ng-container>
+
+    <div class="adf-pdf-viewer__content">
+        <div id="viewer-pdf-viewer" class="viewer-pdf-viewer" (window:resize)="onResize()">
+            <div id="viewer-viewerPdf" class="pdfViewer">
+                <div id="loader-container" class="loader-container">
+                    <div class="loader-item">
+                        <mat-progress-bar mode="indeterminate"></mat-progress-bar>
+                    </div >
+                </div>
+            </div>
         </div>
     </div>
 </div>
@@ -12,7 +27,8 @@
     <adf-toolbar>
 
         <ng-container *ngIf="allowThumbnails">
-            <button mat-icon-button>
+            <button mat-icon-button
+                (click)="toggleThumbnails()">
                 <mat-icon>dashboard</mat-icon>
             </button>
             <adf-toolbar-divider></adf-toolbar-divider>

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

@@ -1,7 +1,14 @@
 @mixin adf-pdf-viewer-theme($theme) {
     $foreground: map-get($theme, foreground);
 
+    .adf-viewer-content-container {
+        width: 100%;
+    }
+
     .adf-pdf-viewer {
+        width: 100%;
+        margin: 0;
+
         .loader-container {
             display: -webkit-box;      /* OLD - iOS 6-, Safari 3.1-6 */
             display: -moz-box;         /* OLD - Firefox 19- (buggy but mostly works) */
@@ -14,6 +21,18 @@
             height:100%;
         }
 
+        &__thumbnails {
+            position: relative; height: 100%; width: 140px; background-color: rgba(0, 0, 0, 0.12);
+        }
+
+        &__container {
+            display: flex; height: 100%;
+        }
+
+        &__content {
+            flex: 1 1 auto; position: relative;
+        }
+
         .loader-item {
             margin: auto;
             max-height:100px;

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

@@ -26,6 +26,8 @@ import { ToolbarModule } from '../../toolbar/toolbar.module';
 import { EventMock } from '../../mock/event.mock';
 import { RenderingQueueServices } from '../services/rendering-queue.services';
 import { PdfViewerComponent } from './pdfViewer.component';
+import { PdfThumbListComponent } from './pdfViewer-thumbnails.component';
+import { PdfThumbComponent } from './pdfViewer-thumb.component';
 
 declare var require: any;
 
@@ -41,7 +43,11 @@ describe('Test PdfViewer component', () => {
                 ToolbarModule,
                 MaterialModule
             ],
-            declarations: [PdfViewerComponent],
+            declarations: [
+                PdfViewerComponent,
+                PdfThumbListComponent,
+                PdfThumbComponent
+            ],
             providers: [
                 SettingsService,
                 AuthenticationService,
@@ -97,7 +103,7 @@ describe('Test PdfViewer component', () => {
 
         it('should Canvas be present', () => {
             expect(element.querySelector('.pdfViewer')).not.toBeNull();
-            expect(element.querySelector('.viewer-pdf-container')).not.toBeNull();
+            expect(element.querySelector('.viewer-pdf-viewer')).not.toBeNull();
         });
 
         it('should Loader be present', () => {
@@ -145,7 +151,7 @@ describe('Test PdfViewer component', () => {
 
         it('should Canvas be present', () => {
             expect(element.querySelector('.pdfViewer')).not.toBeNull();
-            expect(element.querySelector('.viewer-pdf-container')).not.toBeNull();
+            expect(element.querySelector('.viewer-pdf-viewer')).not.toBeNull();
         });
 
         it('should Loader be present', () => {

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

@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-import { Component, HostListener, Input, OnChanges, OnDestroy, ViewEncapsulation } from '@angular/core';
+import { Component, TemplateRef, HostListener, Input, OnChanges, OnDestroy, ViewEncapsulation } from '@angular/core';
 import { LogService } from '../../services/log.service';
 import { RenderingQueueServices } from '../services/rendering-queue.services';
 
@@ -49,6 +49,9 @@ export class PdfViewerComponent implements OnChanges, OnDestroy {
     @Input()
     allowThumbnails = false;
 
+    @Input()
+    thumbnailsTemplate: TemplateRef<any> = null;
+
     currentPdfDocument: any;
     page: number;
     displayPage: number;
@@ -64,6 +67,9 @@ export class PdfViewerComponent implements OnChanges, OnDestroy {
     MIN_SCALE: number = 0.25;
     MAX_SCALE: number = 10.0;
 
+    showThumbnails = false;
+    pdfThumbnailsContext: { viewer: any } = { viewer: null };
+
     get currentScaleText(): string {
         return Math.round(this.currentScale * 100) + '%';
     }
@@ -134,7 +140,7 @@ export class PdfViewerComponent implements OnChanges, OnDestroy {
 
         const viewer: any = document.getElementById('viewer-viewerPdf');
 
-        this.documentContainer = document.getElementById('viewer-pdf-container');
+        this.documentContainer = document.getElementById('viewer-pdf-viewer');
         this.documentContainer.addEventListener('pagechange', this.onPageChange, true);
 
         this.pdfViewer = new PDFJS.PDFViewer({
@@ -146,6 +152,8 @@ export class PdfViewerComponent implements OnChanges, OnDestroy {
         this.renderingQueueServices.setViewer(this.pdfViewer);
 
         this.pdfViewer.setDocument(pdfDocument);
+
+        this.pdfThumbnailsContext.viewer = this.pdfViewer;
     }
 
     ngOnDestroy() {
@@ -154,6 +162,10 @@ export class PdfViewerComponent implements OnChanges, OnDestroy {
         }
     }
 
+    toggleThumbnails() {
+        this.showThumbnails = !this.showThumbnails;
+    }
+
     /**
      * Method to scale the page current support implementation
      *
@@ -165,7 +177,7 @@ export class PdfViewerComponent implements OnChanges, OnDestroy {
         if (this.pdfViewer) {
 
             let viewerContainer = document.getElementById('viewer-main-container');
-            let documentContainer = document.getElementById('viewer-pdf-container');
+            let documentContainer = document.getElementById('viewer-pdf-viewer');
 
             let widthContainer;
             let heightContainer;

lib/core/viewer/components/pdfViewerHost.component.scss

@@ -235,7 +235,7 @@
     }
 }
 
-.viewer-pdf-container {
+.viewer-pdf-viewer {
     overflow: auto;
     -webkit-overflow-scrolling: touch;
     position: absolute;
@@ -245,9 +245,9 @@
     left: 0;
     outline: none;
 }
-html[dir='ltr'] .viewer-pdf-container {
+html[dir='ltr'] .viewer-pdf-viewer {
     box-shadow: inset 1px 0 0 hsla(0,0%,100%,.05);
 }
-html[dir='rtl'] .viewer-pdf-container {
+html[dir='rtl'] .viewer-pdf-viewer {
     box-shadow: inset -1px 0 0 hsla(0,0%,100%,.05);
 }

lib/core/viewer/components/viewer.component.html

@@ -144,7 +144,7 @@
                 <div class="adf-viewer-layout-content adf-viewer__fullscreen-container">
                     <div class="adf-viewer-content-container" [ngSwitch]="viewerType">
                         <ng-container *ngSwitchCase="'pdf'">
-                            <adf-pdf-viewer [blobFile]="blobFile" [urlFile]="urlFileContent" [nameFile]="displayName"></adf-pdf-viewer>
+                            <adf-pdf-viewer [thumbnailsTemplate]="thumbnailsTemplate" [allowThumbnails]="allowThumbnails" [blobFile]="blobFile" [urlFile]="urlFileContent" [nameFile]="displayName"></adf-pdf-viewer>
                         </ng-container>
 
                         <ng-container *ngSwitchCase="'image'">

lib/core/viewer/components/viewer.component.scss

@@ -130,6 +130,39 @@
             overflow: auto;
         }
 
+        &__thumbnails {
+            width: 180px;
+            display: flex;
+            flex-direction: column;
+            padding: 0;
+            background: #e6e6e6;
+
+            .adf-info-drawer-layout {
+                display: flex;
+                flex-direction: column;
+                flex: 1;
+                background: #e6e6e6;
+            }
+
+            .adf-info-drawer-layout-header {
+                margin-bottom: 0;
+            }
+
+            .adf-info-drawer-layout-content {
+                padding: 0;
+                height: 100%;
+            }
+
+            .info-drawer-content {
+                height: 100%;
+            }
+
+            .adf-info-drawer-layout-content > *:last-child {
+                height: 100%;
+                overflow: hidden;
+            }
+        }
+
         &__toolbar {
             &-page-scale {
                 cursor: default;

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

@@ -30,6 +30,8 @@ import { RenderingQueueServices } from '../services/rendering-queue.services';
 import { ImgViewerComponent } from './imgViewer.component';
 import { MediaPlayerComponent } from './mediaPlayer.component';
 import { PdfViewerComponent } from './pdfViewer.component';
+import { PdfThumbListComponent } from './pdfViewer-thumbnails.component';
+import { PdfThumbComponent } from './pdfViewer-thumb.component';
 import { TxtViewerComponent } from './txtViewer.component';
 import { UnknownFormatComponent } from './unknown-format/unknown-format.component';
 import { ViewerMoreActionsComponent } from './viewer-more-actions.component';
@@ -129,6 +131,8 @@ describe('ViewerComponent', () => {
             declarations: [
                 ViewerComponent,
                 PdfViewerComponent,
+                PdfThumbListComponent,
+                PdfThumbComponent,
                 TxtViewerComponent,
                 MediaPlayerComponent,
                 ImgViewerComponent,

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

@@ -18,7 +18,8 @@
 import { Location } from '@angular/common';
 import {
     Component, ContentChild, EventEmitter, HostListener, ElementRef,
-    Input, OnChanges, Output, SimpleChanges, TemplateRef, ViewEncapsulation
+    Input, OnChanges, Output, SimpleChanges, TemplateRef,
+    ViewEncapsulation
 } from '@angular/core';
 import { MinimalNodeEntryEntity, RenditionEntry } from 'alfresco-js-api';
 import { BaseEvent } from '../../events';
@@ -130,6 +131,10 @@ export class ViewerComponent implements OnChanges {
     @Input()
     allowSidebar = false;
 
+    /** Toggles PDF thumbnails. */
+    @Input()
+    allowThumbnails = true;
+
     /** Toggles sidebar visibility. Requires `allowSidebar` to be set to `true`. */
     @Input()
     showSidebar = false;
@@ -142,6 +147,10 @@ export class ViewerComponent implements OnChanges {
     @Input()
     sidebarTemplate: TemplateRef<any> = null;
 
+    /** The template for the pdf thumbnails. */
+    @Input()
+    thumbnailsTemplate: TemplateRef<any> = null;
+
     /** MIME type of the file content (when not determined by the filename extension). */
     @Input()
     mimeType: string;
@@ -192,6 +201,7 @@ export class ViewerComponent implements OnChanges {
     @Output()
     navigateNext = new EventEmitter();
 
+    showPdfThumbnails: boolean = false;
     viewerType = 'unknown';
     isLoading = false;
     node: MinimalNodeEntryEntity;

lib/core/viewer/public-api.ts

@@ -19,6 +19,8 @@ export * from './components/viewer.component';
 export * from './components/imgViewer.component';
 export * from './components/mediaPlayer.component';
 export * from './components/pdfViewer.component';
+export * from './components/pdfViewer-thumbnails.component';
+export * from './components/pdfViewer-thumb.component';
 export * from './components/txtViewer.component';
 export * from './components/unknown-format/unknown-format.component';
 export * from './components/viewer-more-actions.component';

lib/core/viewer/viewer.module.ts

@@ -25,6 +25,8 @@ import { PipeModule } from '../pipes/pipe.module';
 import { ImgViewerComponent } from './components/imgViewer.component';
 import { MediaPlayerComponent } from './components/mediaPlayer.component';
 import { PdfViewerComponent } from './components/pdfViewer.component';
+import { PdfThumbComponent } from './components/pdfViewer-thumb.component';
+import { PdfThumbListComponent } from './components/pdfViewer-thumbnails.component';
 import { TxtViewerComponent } from './components/txtViewer.component';
 import { UnknownFormatComponent } from './components/unknown-format/unknown-format.component';
 import { ViewerMoreActionsComponent } from './components/viewer-more-actions.component';
@@ -50,6 +52,8 @@ import { FlexLayoutModule } from '@angular/flex-layout';
         TxtViewerComponent,
         MediaPlayerComponent,
         PdfViewerComponent,
+        PdfThumbComponent,
+        PdfThumbListComponent,
         ViewerExtensionDirective,
         UnknownFormatComponent,
         ViewerToolbarComponent,
@@ -63,6 +67,8 @@ import { FlexLayoutModule } from '@angular/flex-layout';
         TxtViewerComponent,
         MediaPlayerComponent,
         PdfViewerComponent,
+        PdfThumbComponent,
+        PdfThumbListComponent,
         ViewerExtensionDirective,
         UnknownFormatComponent,
         ViewerToolbarComponent,