chore(loading): Remove sub-header progress bar experience

src/lib/Preview.js

@@ -870,10 +870,9 @@ class Preview extends EventEmitter {
         // Update navigation
         this.ui.showNavigation(this.file.id, this.collection);
 
-        // Setup loading UI and progress bar
+        // Setup loading indicator
         this.ui.showLoadingIcon(this.file.extension);
         this.ui.showLoadingIndicator();
-        this.ui.startProgressBar();
 
         // Start the preview duration timer when the user starts to perceive preview's load
         const previewDurationTag = Timer.createTag(this.file.id, DURATION_METRIC);
@@ -929,9 +928,6 @@ class Preview extends EventEmitter {
         // Whether the loading indicator should be shown
         this.options.showLoading = options.showLoading !== false;
 
-        // Whether the progress indicator should be shown
-        this.options.showProgress = options.showProgress !== false;
-
         // Whether annotations v4 buttons should be shown in toolbar
         this.options.showAnnotationsControls = !!options.showAnnotationsControls;
 
@@ -1264,12 +1260,6 @@ class Preview extends EventEmitter {
             case VIEWER_EVENT.load:
                 this.finishLoading(data.data);
                 break;
-            case VIEWER_EVENT.progressStart:
-                this.ui.startProgressBar();
-                break;
-            case VIEWER_EVENT.progressEnd:
-                this.ui.finishProgressBar();
-                break;
             case VIEWER_EVENT.error:
                 // Do nothing since 'error' event was already caught, and will be emitted
                 // as a 'preview_error' event
@@ -1373,11 +1363,6 @@ class Preview extends EventEmitter {
             }
         }
 
-        // Finish the progress bar unless instructed not to
-        if (data.endProgress !== false) {
-            this.ui.finishProgressBar();
-        }
-
         // Programmatically focus on the viewer after it loads
         if (this.options.autoFocus && this.viewer && this.viewer.containerEl) {
             this.viewer.containerEl.focus();

src/lib/Preview.scss

@@ -2,5 +2,4 @@
 @import 'loading';
 @import 'navigation';
 @import './Controls';
-@import './ProgressBar';
 @import './VirtualScroller';

src/lib/PreviewUI.js

@@ -1,6 +1,5 @@
 import LoadingIcon from './LoadingIcon';
 import Notification from './Notification';
-import ProgressBar from './ProgressBar';
 import shellTemplate from './shell.html';
 import {
     CLASS_BOX_PREVIEW_BASE_HEADER,
@@ -49,20 +48,13 @@ class PreviewUI {
     /** @property {HTMLElement} - Preview container element which houses the sidebar and content */
     previewContainer;
 
-    /** @property {ProgressBar} - Progress bar instance */
-    progressBar;
-
     /**
      * Destroy preview container content.
      *
      * @public
      * @return {void}
      */
     cleanup() {
-        if (this.progressBar) {
-            this.progressBar.destroy();
-        }
-
         if (this.previewContainer) {
             this.previewContainer.removeEventListener('mousemove', this.mousemoveHandler);
         }
@@ -131,11 +123,6 @@ class PreviewUI {
             this.destroyLoading();
         }
 
-        // Setup progress bar
-        if (options.showProgress) {
-            this.progressBar = new ProgressBar(this.container);
-        }
-
         // Attach keyboard events
         document.addEventListener('keydown', this.keydownHandler);
 
@@ -274,30 +261,6 @@ class PreviewUI {
         this.previewContainer.classList.add(CLASS_PREVIEW_LOADED);
     }
 
-    /**
-     * Shows and starts a progress bar at the top of the preview.
-     *
-     * @public
-     * @return {void}
-     */
-    startProgressBar() {
-        if (this.progressBar) {
-            this.progressBar.start();
-        }
-    }
-
-    /**
-     * Finishes and hides the top progress bar if present.
-     *
-     * @public
-     * @return {void}
-     */
-    finishProgressBar() {
-        if (this.progressBar) {
-            this.progressBar.finish();
-        }
-    }
-
     /**
      * Setup notification
      *

src/lib/__tests__/Preview-test.js

@@ -1218,7 +1218,6 @@ describe('lib/Preview', () => {
             previewUIMock.expects('setup');
             previewUIMock.expects('showLoadingIcon');
             previewUIMock.expects('showLoadingIndicator');
-            previewUIMock.expects('startProgressBar');
             previewUIMock.expects('showNavigation');
             previewUIMock.expects('setupNotification');
 
@@ -1320,15 +1319,6 @@ describe('lib/Preview', () => {
             expect(preview.options.showLoading).toBe(false);
         });
 
-        test('should set whether to show progress indicators', () => {
-            preview.parseOptions(preview.previewOptions);
-            expect(preview.options.showProgress).toBe(true);
-
-            preview.previewOptions.showProgress = false;
-            preview.parseOptions(preview.previewOptions);
-            expect(preview.options.showProgress).toBe(false);
-        });
-
         test('should set whether to skip load from the server and any server updates', () => {
             preview.parseOptions(preview.previewOptions);
             expect(preview.options.skipServerUpdate).toBe(false);
@@ -1784,11 +1774,6 @@ describe('lib/Preview', () => {
     });
 
     describe('handleViewerEvents()', () => {
-        beforeEach(() => {
-            jest.spyOn(preview.ui, 'startProgressBar').mockImplementation();
-            jest.spyOn(preview.ui, 'finishProgressBar').mockImplementation();
-        });
-
         test('should call download on download event', () => {
             jest.spyOn(preview, 'download').mockImplementation();
             preview.handleViewerEvents({ event: VIEWER_EVENT.download });
@@ -1807,16 +1792,6 @@ describe('lib/Preview', () => {
             expect(preview.finishLoading).toBeCalled();
         });
 
-        test('should start progress bar on progressstart event', () => {
-            preview.handleViewerEvents({ event: VIEWER_EVENT.progressStart });
-            expect(preview.ui.startProgressBar).toBeCalled();
-        });
-
-        test('should finish progress bar on progressend event', () => {
-            preview.handleViewerEvents({ event: VIEWER_EVENT.progressEnd });
-            expect(preview.ui.finishProgressBar).toBeCalled();
-        });
-
         test('should emit viewerevent when event does not match', () => {
             jest.spyOn(preview, 'emit');
             const data = {
@@ -1867,7 +1842,6 @@ describe('lib/Preview', () => {
             stubs.emit = jest.spyOn(preview, 'emit');
             stubs.logPreviewEvent = jest.spyOn(preview, 'logPreviewEvent');
             stubs.prefetchNextFiles = jest.spyOn(preview, 'prefetchNextFiles');
-            stubs.finishProgressBar = jest.spyOn(preview.ui, 'finishProgressBar').mockImplementation();
             stubs.setupNotification = jest.spyOn(preview.ui, 'setupNotification').mockImplementation();
 
             stubs.perf = {
@@ -1970,18 +1944,6 @@ describe('lib/Preview', () => {
             expect(callPhantomSpy).toBeCalled();
         });
 
-        test('should postload if skipPostload is not true', () => {
-            preview.finishLoading();
-            expect(stubs.finishProgressBar).toBeCalled();
-        });
-
-        test('should skip postload if skipPostload is true', () => {
-            preview.finishLoading({
-                endProgress: false,
-            });
-            expect(stubs.finishProgressBar).not.toBeCalled();
-        });
-
         test('should focus the viewer container', () => {
             preview.options.autoFocus = true;
             preview.viewer.containerEl = {