ngx-extended-pdf-viewer/assets/viewer.js

Embedding PDF files in your Angular application. Highly configurable viewer including the toolbar, sidebar, and all the features you're used to.

/**
 * @licstart The following is the entire license notice for the
 * Javascript code in this page
 *
 * Copyright 2019 Mozilla Foundation
 *
 * 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.
 *
 * @licend The above is the entire license notice for the
 * Javascript code in this page
 */

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/* 0 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


;
let pdfjsWebApp, pdfjsWebAppOptions;
{
  pdfjsWebApp = __webpack_require__(1);
  pdfjsWebAppOptions = __webpack_require__(3);
}
;
{
  __webpack_require__(33);
}
;
{
  __webpack_require__(38);
}

function getViewerConfiguration() {
  return {
    appContainer: document.body,
    mainContainer: document.getElementById('viewerContainer'),
    viewerContainer: document.getElementById('viewer'),
    eventBus: null,
    toolbar: {
      container: document.getElementById('toolbarViewer'),
      numPages: document.getElementById('numPages'),
      pageNumber: document.getElementById('pageNumber'),
      scaleSelectContainer: document.getElementById('scaleSelectContainer'),
      scaleSelect: document.getElementById('scaleSelect'),
      customScaleOption: document.getElementById('customScaleOption'),
      previous: document.getElementById('previous'),
      next: document.getElementById('next'),
      zoomIn: document.getElementById('zoomIn'),
      zoomOut: document.getElementById('zoomOut'),
      viewFind: document.getElementById('viewFind'),
      openFile: document.getElementById('openFile'),
      print: document.getElementById('print'),
      presentationModeButton: document.getElementById('presentationMode'),
      download: document.getElementById('download'),
      viewBookmark: document.getElementById('viewBookmark')
    },
    secondaryToolbar: {
      toolbar: document.getElementById('secondaryToolbar'),
      toggleButton: document.getElementById('secondaryToolbarToggle'),
      toolbarButtonContainer: document.getElementById('secondaryToolbarButtonContainer'),
      presentationModeButton: document.getElementById('secondaryPresentationMode'),
      openFileButton: document.getElementById('secondaryOpenFile'),
      printButton: document.getElementById('secondaryPrint'),
      downloadButton: document.getElementById('secondaryDownload'),
      viewBookmarkButton: document.getElementById('secondaryViewBookmark'),
      firstPageButton: document.getElementById('firstPage'),
      lastPageButton: document.getElementById('lastPage'),
      pageRotateCwButton: document.getElementById('pageRotateCw'),
      pageRotateCcwButton: document.getElementById('pageRotateCcw'),
      cursorSelectToolButton: document.getElementById('cursorSelectTool'),
      cursorHandToolButton: document.getElementById('cursorHandTool'),
      scrollVerticalButton: document.getElementById('scrollVertical'),
      scrollHorizontalButton: document.getElementById('scrollHorizontal'),
      scrollWrappedButton: document.getElementById('scrollWrapped'),
      spreadNoneButton: document.getElementById('spreadNone'),
      spreadOddButton: document.getElementById('spreadOdd'),
      spreadEvenButton: document.getElementById('spreadEven'),
      documentPropertiesButton: document.getElementById('documentProperties')
    },
    fullscreen: {
      contextFirstPage: document.getElementById('contextFirstPage'),
      contextLastPage: document.getElementById('contextLastPage'),
      contextPageRotateCw: document.getElementById('contextPageRotateCw'),
      contextPageRotateCcw: document.getElementById('contextPageRotateCcw')
    },
    sidebar: {
      outerContainer: document.getElementById('outerContainer'),
      viewerContainer: document.getElementById('viewerContainer'),
      toggleButton: document.getElementById('sidebarToggle'),
      thumbnailButton: document.getElementById('viewThumbnail'),
      outlineButton: document.getElementById('viewOutline'),
      attachmentsButton: document.getElementById('viewAttachments'),
      thumbnailView: document.getElementById('thumbnailView'),
      outlineView: document.getElementById('outlineView'),
      attachmentsView: document.getElementById('attachmentsView')
    },
    sidebarResizer: {
      outerContainer: document.getElementById('outerContainer'),
      resizer: document.getElementById('sidebarResizer')
    },
    findBar: {
      bar: document.getElementById('findbar'),
      toggleButton: document.getElementById('viewFind'),
      findField: document.getElementById('findInput'),
      highlightAllCheckbox: document.getElementById('findHighlightAll'),
      caseSensitiveCheckbox: document.getElementById('findMatchCase'),
      entireWordCheckbox: document.getElementById('findEntireWord'),
      ignoreAccentsCheckbox: document.getElementById('findIgnoreAccents'), // #177
      findMsg: document.getElementById('findMsg'),
      findResultsCount: document.getElementById('findResultsCount'),
      findPreviousButton: document.getElementById('findPrevious'),
      findNextButton: document.getElementById('findNext')
    },
    passwordOverlay: {
      overlayName: 'passwordOverlay',
      container: document.getElementById('passwordOverlay'),
      label: document.getElementById('passwordText'),
      input: document.getElementById('password'),
      submitButton: document.getElementById('passwordSubmit'),
      cancelButton: document.getElementById('passwordCancel')
    },
    documentProperties: {
      overlayName: 'documentPropertiesOverlay',
      container: document.getElementById('documentPropertiesOverlay'),
      closeButton: document.getElementById('documentPropertiesClose'),
      fields: {
        'fileName': document.getElementById('fileNameField'),
        'fileSize': document.getElementById('fileSizeField'),
        'title': document.getElementById('titleField'),
        'author': document.getElementById('authorField'),
        'subject': document.getElementById('subjectField'),
        'keywords': document.getElementById('keywordsField'),
        'creationDate': document.getElementById('creationDateField'),
        'modificationDate': document.getElementById('modificationDateField'),
        'creator': document.getElementById('creatorField'),
        'producer': document.getElementById('producerField'),
        'version': document.getElementById('versionField'),
        'pageCount': document.getElementById('pageCountField'),
        'pageSize': document.getElementById('pageSizeField'),
        'linearized': document.getElementById('linearizedField')
      }
    },
    errorWrapper: {
      container: document.getElementById('errorWrapper'),
      errorMessage: document.getElementById('errorMessage'),
      closeButton: document.getElementById('errorClose'),
      errorMoreInfo: document.getElementById('errorMoreInfo'),
      moreInfoButton: document.getElementById('errorShowMore'),
      lessInfoButton: document.getElementById('errorShowLess')
    },
    printContainer: document.getElementById('printContainer'),
    openFileInputName: 'fileInput',
    debuggerScriptPath: './debugger.js'
  };
}

function webViewerLoad() {
  let config = getViewerConfiguration();
  window.PDFViewerApplication = pdfjsWebApp.PDFViewerApplication;
  window.PDFViewerApplicationOptions = pdfjsWebAppOptions.AppOptions;
  const event = document.createEvent('CustomEvent');
  event.initCustomEvent('webviewerloaded', true, true, {});
  document.dispatchEvent(event);
  pdfjsWebApp.PDFViewerApplication.run(config);
}

window.webViewerLoad = webViewerLoad;

/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.PDFPrintServiceFactory = exports.DefaultExternalServices = exports.PDFViewerApplication = void 0;

var _ui_utils = __webpack_require__(2);

var _app_options = __webpack_require__(3);

var _pdfjsLib = __webpack_require__(4);

var _pdf_cursor_tools = __webpack_require__(6);

var _pdf_rendering_queue = __webpack_require__(8);

var _pdf_sidebar = __webpack_require__(9);

var _overlay_manager = __webpack_require__(10);

var _password_prompt = __webpack_require__(11);

var _pdf_attachment_viewer = __webpack_require__(12);

var _pdf_document_properties = __webpack_require__(13);

var _pdf_find_bar = __webpack_require__(14);

var _pdf_find_controller = __webpack_require__(15);

var _pdf_history = __webpack_require__(17);

var _pdf_link_service = __webpack_require__(18);

var _pdf_outline_viewer = __webpack_require__(19);

var _pdf_presentation_mode = __webpack_require__(20);

var _pdf_sidebar_resizer = __webpack_require__(21);

var _pdf_thumbnail_viewer = __webpack_require__(22);

var _pdf_viewer = __webpack_require__(24);

var _secondary_toolbar = __webpack_require__(29);

var _toolbar = __webpack_require__(31);

var _view_history = __webpack_require__(32);

const DEFAULT_SCALE_DELTA = 1.1;
const DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT = 5000;
const FORCE_PAGES_LOADED_TIMEOUT = 10000;
const WHEEL_ZOOM_DISABLED_TIMEOUT = 1000;
const ViewOnLoad = {
  UNKNOWN: -1,
  PREVIOUS: 0,
  INITIAL: 1
};
const DefaultExternalServices = {
  updateFindControlState(data) {},

  updateFindMatchesCount(data) {},

  initPassiveLoading(callbacks) {},

  fallback(data, callback) {},

  reportTelemetry(data) {},

  createDownloadManager(options) {
    throw new Error('Not implemented: createDownloadManager');
  },

  createPreferences() {
    throw new Error('Not implemented: createPreferences');
  },

  createL10n(options) {
    throw new Error('Not implemented: createL10n');
  },

  supportsIntegratedFind: false,
  supportsDocumentFonts: true,
  supportsDocumentColors: true,
  supportedMouseWheelZoomModifierKeys: {
    ctrlKey: true,
    metaKey: true
  }
};
exports.DefaultExternalServices = DefaultExternalServices;
let PDFViewerApplication = {
  initialBookmark: document.location.hash.substring(1),
  initialized: false,
  fellback: false,
  appConfig: null,
  pdfDocument: null,
  pdfLoadingTask: null,
  printService: null,
  pdfViewer: null,
  pdfThumbnailViewer: null,
  pdfRenderingQueue: null,
  pdfPresentationMode: null,
  pdfDocumentProperties: null,
  pdfLinkService: null,
  pdfHistory: null,
  pdfSidebar: null,
  pdfSidebarResizer: null,
  pdfOutlineViewer: null,
  pdfAttachmentViewer: null,
  pdfCursorTools: null,
  store: null,
  downloadManager: null,
  overlayManager: null,
  preferences: null,
  toolbar: null,
  secondaryToolbar: null,
  eventBus: null,
  l10n: null,
  isInitialViewSet: false,
  downloadComplete: false,
  isViewerEmbedded: window.parent !== window,
  url: '',
  baseUrl: '',
  externalServices: DefaultExternalServices,
  _boundEvents: {},
  contentDispositionFilename: null,

  async initialize(appConfig) {
    this.preferences = this.externalServices.createPreferences();
    this.appConfig = appConfig;
    await this._readPreferences();
    await this._parseHashParameters();
    await this._initializeL10n();

    if (this.isViewerEmbedded && _app_options.AppOptions.get('externalLinkTarget') === _pdfjsLib.LinkTarget.NONE) {
      _app_options.AppOptions.set('externalLinkTarget', _pdfjsLib.LinkTarget.TOP);
    }

    await this._initializeViewerComponents();
    this.bindEvents();
    this.bindWindowEvents();
    let appContainer = appConfig.appContainer || document.documentElement;
    this.l10n.translate(appContainer).then(() => {
      this.eventBus.dispatch('localized', {
        source: this
      });
    });
    this.initialized = true;
  },

  async _readPreferences() {
    if (_app_options.AppOptions.get('disablePreferences') === true) {
      return;
    }

    try {
      const prefs = await this.preferences.getAll();

      for (const name in prefs) {
        _app_options.AppOptions.set(name, prefs[name]);
      }
    } catch (reason) {
      console.error(`_readPreferences: "${reason.message}".`);
    }
  },

  async _parseHashParameters() {
    if (!_app_options.AppOptions.get('pdfBugEnabled')) {
      return undefined;
    }

    const waitOn = [];
    let hash = document.location.hash.substring(1);
    let hashParams = (0, _ui_utils.parseQueryString)(hash);

    if ('disableworker' in hashParams && hashParams['disableworker'] === 'true') {
      waitOn.push(loadFakeWorker());
    }

    if ('disablerange' in hashParams) {
      _app_options.AppOptions.set('disableRange', hashParams['disablerange'] === 'true');
    }

    if ('disablestream' in hashParams) {
      _app_options.AppOptions.set('disableStream', hashParams['disablestream'] === 'true');
    }

    if ('disableautofetch' in hashParams) {
      _app_options.AppOptions.set('disableAutoFetch', hashParams['disableautofetch'] === 'true');
    }

    if ('disablefontface' in hashParams) {
      _app_options.AppOptions.set('disableFontFace', hashParams['disablefontface'] === 'true');
    }

    if ('disablehistory' in hashParams) {
      _app_options.AppOptions.set('disableHistory', hashParams['disablehistory'] === 'true');
    }

    if ('webgl' in hashParams) {
      _app_options.AppOptions.set('enableWebGL', hashParams['webgl'] === 'true');
    }

    if ('useonlycsszoom' in hashParams) {
      _app_options.AppOptions.set('useOnlyCssZoom', hashParams['useonlycsszoom'] === 'true');
    }

    if ('verbosity' in hashParams) {
      _app_options.AppOptions.set('verbosity', hashParams['verbosity'] | 0);
    }

    if ('textlayer' in hashParams) {
      switch (hashParams['textlayer']) {
        case 'off':
          _app_options.AppOptions.set('textLayerMode', _ui_utils.TextLayerMode.DISABLE);

          break;

        case 'visible':
        case 'shadow':
        case 'hover':
          let viewer = this.appConfig.viewerContainer;
          viewer.classList.add('textLayer-' + hashParams['textlayer']);
          break;
      }
    }

    if ('pdfbug' in hashParams) {
      _app_options.AppOptions.set('pdfBug', true);

      let enabled = hashParams['pdfbug'].split(',');
      waitOn.push(loadAndEnablePDFBug(enabled));
    }

    if ('locale' in hashParams) {
      _app_options.AppOptions.set('locale', hashParams['locale']);
    }

    return Promise.all(waitOn).catch(reason => {
      console.error(`_parseHashParameters: "${reason.message}".`);
    });
  },

  async _initializeL10n() {
    this.l10n = this.externalServices.createL10n({
      locale: _app_options.AppOptions.get('locale')
    });
    const dir = await this.l10n.getDirection();
    document.getElementsByTagName('html')[0].dir = dir;
  },

  async _initializeViewerComponents() {
    const appConfig = this.appConfig;
    this.overlayManager = new _overlay_manager.OverlayManager();
    const eventBus = appConfig.eventBus || (0, _ui_utils.getGlobalEventBus)(_app_options.AppOptions.get('eventBusDispatchToDOM'));
    this.eventBus = eventBus;
    let pdfRenderingQueue = new _pdf_rendering_queue.PDFRenderingQueue();
    pdfRenderingQueue.onIdle = this.cleanup.bind(this);
    this.pdfRenderingQueue = pdfRenderingQueue;
    let pdfLinkService = new _pdf_link_service.PDFLinkService({
      eventBus,
      externalLinkTarget: _app_options.AppOptions.get('externalLinkTarget'),
      externalLinkRel: _app_options.AppOptions.get('externalLinkRel')
    });
    this.pdfLinkService = pdfLinkService;
    let downloadManager = this.externalServices.createDownloadManager({
      disableCreateObjectURL: _app_options.AppOptions.get('disableCreateObjectURL')
    });
    this.downloadManager = downloadManager;
    const findController = new _pdf_find_controller.PDFFindController({
      linkService: pdfLinkService,
      eventBus
    });
    this.findController = findController;
    const container = appConfig.mainContainer;
    const viewer = appConfig.viewerContainer;
    this.pdfViewer = new _pdf_viewer.PDFViewer({
      container,
      viewer,
      eventBus,
      renderingQueue: pdfRenderingQueue,
      linkService: pdfLinkService,
      downloadManager,
      findController,
      renderer: _app_options.AppOptions.get('renderer'),
      enableWebGL: _app_options.AppOptions.get('enableWebGL'),
      l10n: this.l10n,
      textLayerMode: _app_options.AppOptions.get('textLayerMode'),
      imageResourcesPath: _app_options.AppOptions.get('imageResourcesPath'),
      renderInteractiveForms: _app_options.AppOptions.get('renderInteractiveForms'),
      enablePrintAutoRotate: _app_options.AppOptions.get('enablePrintAutoRotate'),
      useOnlyCssZoom: _app_options.AppOptions.get('useOnlyCssZoom'),
      maxCanvasPixels: _app_options.AppOptions.get('maxCanvasPixels')
    });
    pdfRenderingQueue.setViewer(this.pdfViewer);
    pdfLinkService.setViewer(this.pdfViewer);
    this.pdfThumbnailViewer = new _pdf_thumbnail_viewer.PDFThumbnailViewer({
      container: appConfig.sidebar.thumbnailView,
      renderingQueue: pdfRenderingQueue,
      linkService: pdfLinkService,
      l10n: this.l10n
    });
    pdfRenderingQueue.setThumbnailViewer(this.pdfThumbnailViewer);
    this.pdfHistory = new _pdf_history.PDFHistory({
      linkService: pdfLinkService,
      eventBus
    });
    pdfLinkService.setHistory(this.pdfHistory);

    if (!this.supportsIntegratedFind) {
      this.findBar = new _pdf_find_bar.PDFFindBar(appConfig.findBar, eventBus, this.l10n);
    }

    this.pdfDocumentProperties = new _pdf_document_properties.PDFDocumentProperties(appConfig.documentProperties, this.overlayManager, eventBus, this.l10n);
    this.pdfCursorTools = new _pdf_cursor_tools.PDFCursorTools({
      container,
      eventBus,
      cursorToolOnLoad: _app_options.AppOptions.get('cursorToolOnLoad')
    });
    this.toolbar = new _toolbar.Toolbar(appConfig.toolbar, eventBus, this.l10n);
    this.secondaryToolbar = new _secondary_toolbar.SecondaryToolbar(appConfig.secondaryToolbar, container, eventBus);

    if (this.supportsFullscreen) {
      this.pdfPresentationMode = new _pdf_presentation_mode.PDFPresentationMode({
        container,
        viewer,
        pdfViewer: this.pdfViewer,
        eventBus,
        contextMenuItems: appConfig.fullscreen
      });
    }

    this.passwordPrompt = new _password_prompt.PasswordPrompt(appConfig.passwordOverlay, this.overlayManager, this.l10n);
    this.pdfOutlineViewer = new _pdf_outline_viewer.PDFOutlineViewer({
      container: appConfig.sidebar.outlineView,
      eventBus,
      linkService: pdfLinkService
    });
    this.pdfAttachmentViewer = new _pdf_attachment_viewer.PDFAttachmentViewer({
      container: appConfig.sidebar.attachmentsView,
      eventBus,
      downloadManager
    });
    this.pdfSidebar = new _pdf_sidebar.PDFSidebar({
      elements: appConfig.sidebar,
      pdfViewer: this.pdfViewer,
      pdfThumbnailViewer: this.pdfThumbnailViewer,
      eventBus,
      l10n: this.l10n
    });
    this.pdfSidebar.onToggled = this.forceRendering.bind(this);
    this.pdfSidebarResizer = new _pdf_sidebar_resizer.PDFSidebarResizer(appConfig.sidebarResizer, eventBus, this.l10n);
  },

  run(config) {
    this.initialize(config).then(webViewerInitialized);
  },

  zoomIn(ticks) {
    if (this.pdfViewer.isInPresentationMode) {
      return;
    }

    let newScale = this.pdfViewer.currentScale;

    do {
      newScale = (newScale * DEFAULT_SCALE_DELTA).toFixed(2);
      newScale = Math.ceil(newScale * 10) / 10;
      newScale = Math.min(_ui_utils.MAX_SCALE, newScale);
    } while (--ticks > 0 && newScale < _ui_utils.MAX_SCALE);

    this.pdfViewer.currentScaleValue = newScale;
  },

  zoomOut(ticks) {
    if (this.pdfViewer.isInPresentationMode) {
      return;
    }

    let newScale = this.pdfViewer.currentScale;

    do {
      newScale = (newScale / DEFAULT_SCALE_DELTA).toFixed(2);
      newScale = Math.floor(newScale * 10) / 10;
      newScale = Math.max(_ui_utils.MIN_SCALE, newScale);
    } while (--ticks > 0 && newScale > _ui_utils.MIN_SCALE);

    this.pdfViewer.currentScaleValue = newScale;
  },

  zoomReset() {
    if (this.pdfViewer.isInPresentationMode) {
      return;
    }

    this.pdfViewer.currentScaleValue = _ui_utils.DEFAULT_SCALE_VALUE;
  },

  get pagesCount() {
    return this.pdfDocument ? this.pdfDocument.numPages : 0;
  },

  set page(val) {
    this.pdfViewer.currentPageNumber = val;
  },

  get page() {
    return this.pdfViewer.currentPageNumber;
  },

  get printing() {
    return !!this.printService;
  },

  get supportsPrinting() {
    return PDFPrintServiceFactory.instance.supportsPrinting;
  },

  get supportsFullscreen() {
    let support;
    let doc = document.documentElement;
    support = !!(doc.requestFullscreen || doc.mozRequestFullScreen || doc.webkitRequestFullScreen || doc.msRequestFullscreen);

    if (document.fullscreenEnabled === false || document.mozFullScreenEnabled === false || document.webkitFullscreenEnabled === false || document.msFullscreenEnabled === false) {
      support = false;
    }

    return (0, _pdfjsLib.shadow)(this, 'supportsFullscreen', support);
  },

  get supportsIntegratedFind() {
    return this.externalServices.supportsIntegratedFind;
  },

  get supportsDocumentFonts() {
    return this.externalServices.supportsDocumentFonts;
  },

  get supportsDocumentColors() {
    return this.externalServices.supportsDocumentColors;
  },

  get loadingBar() {
    let bar = new _ui_utils.ProgressBar('#loadingBar');
    return (0, _pdfjsLib.shadow)(this, 'loadingBar', bar);
  },

  get supportedMouseWheelZoomModifierKeys() {
    return this.externalServices.supportedMouseWheelZoomModifierKeys;
  },

  initPassiveLoading() {
    throw new Error('Not implemented: initPassiveLoading');
  },

  setTitleUsingUrl(url = '') {
    this.url = url;
    this.baseUrl = url.split('#')[0];
    let title = (0, _ui_utils.getPDFFileNameFromURL)(url, '');

    if (!title) {
      try {
        title = decodeURIComponent((0, _pdfjsLib.getFilenameFromUrl)(url)) || url;
      } catch (ex) {
        title = url;
      }
    }

    this.setTitle(title);
  },

  setTitle(title) {
    if (this.isViewerEmbedded) {
      return;
    }

    document.title = title;
  },

  async close() {
    let errorWrapper = this.appConfig.errorWrapper.container;
    errorWrapper.setAttribute('hidden', 'true');

    if (!this.pdfLoadingTask) {
      return undefined;
    }

    let promise = this.pdfLoadingTask.destroy();
    this.pdfLoadingTask = null;

    if (this.pdfDocument) {
      this.pdfDocument = null;
      this.pdfThumbnailViewer.setDocument(null);
      this.pdfViewer.setDocument(null);
      this.pdfLinkService.setDocument(null);
      this.pdfDocumentProperties.setDocument(null);
    }

    this.store = null;
    this.isInitialViewSet = false;
    this.downloadComplete = false;
    this.url = '';
    this.baseUrl = '';
    this.contentDispositionFilename = null;
    this.pdfSidebar.reset();
    this.pdfOutlineViewer.reset();
    this.pdfAttachmentViewer.reset();

    if (this.findBar) {
      this.findBar.reset();
    }

    this.toolbar.reset();
    this.secondaryToolbar.reset();

    if (typeof PDFBug !== 'undefined') {
      PDFBug.cleanup();
    }

    return promise;
  },

  async open(file, args) {
    if (this.pdfLoadingTask) {
      await this.close();
    }

    const workerParameters = _app_options.AppOptions.getAll(_app_options.OptionKind.WORKER);

    for (let key in workerParameters) {
      _pdfjsLib.GlobalWorkerOptions[key] = workerParameters[key];
    }

    let parameters = Object.create(null);

    if (typeof file === 'string') {
      this.setTitleUsingUrl(file);
      parameters.url = file;
    } else if (file && 'byteLength' in file) {
      parameters.data = file;
    } else if (file.url && file.originalUrl) {
      this.setTitleUsingUrl(file.originalUrl);
      parameters.url = file.url;
    }

    const apiParameters = _app_options.AppOptions.getAll(_app_options.OptionKind.API);

    for (let key in apiParameters) {
      let value = apiParameters[key];

      if (key === 'docBaseUrl' && !value) {}

      parameters[key] = value;
    }

    if (args) {
      for (let key in args) {
        const value = args[key];

        if (key === 'length') {
          this.pdfDocumentProperties.setFileSize(value);
        }

        parameters[key] = value;
      }
    }

    let loadingTask = (0, _pdfjsLib.getDocument)(parameters);
    this.pdfLoadingTask = loadingTask;

    loadingTask.onPassword = (updateCallback, reason) => {
      this.pdfLinkService.externalLinkEnabled = false;
      this.passwordPrompt.setUpdateCallback(updateCallback, reason);
      this.passwordPrompt.open();
    };

    loadingTask.onProgress = ({
      loaded,
      total
    }) => {
      this.progress(loaded / total);
    };

    loadingTask.onUnsupportedFeature = this.fallback.bind(this);
    return loadingTask.promise.then(pdfDocument => {
      this.load(pdfDocument);
    }, exception => {
      if (loadingTask !== this.pdfLoadingTask) {
        return undefined;
      }

      let message = exception && exception.message;
      let loadingErrorMessage;

      if (exception instanceof _pdfjsLib.InvalidPDFException) {
        loadingErrorMessage = this.l10n.get('invalid_file_error', null, 'Invalid or corrupted PDF file.');
      } else if (exception instanceof _pdfjsLib.MissingPDFException) {
        loadingErrorMessage = this.l10n.get('missing_file_error', null, 'Missing PDF file.');
      } else if (exception instanceof _pdfjsLib.UnexpectedResponseException) {
        loadingErrorMessage = this.l10n.get('unexpected_response_error', null, 'Unexpected server response.');
      } else {
        loadingErrorMessage = this.l10n.get('loading_error', null, 'An error occurred while loading the PDF.');
      }

      return loadingErrorMessage.then(msg => {
        this.error(msg, {
          message
        });
        throw new Error(msg);
      });
    });
  },

  download() {
    function downloadByUrl() {
      downloadManager.downloadUrl(url, filename);
    }

    let url = this.baseUrl;
    let filename = this.contentDispositionFilename || (0, _ui_utils.getPDFFileNameFromURL)(this.url);
    let downloadManager = this.downloadManager;

    downloadManager.onerror = err => {
      this.error(`PDF failed to download: ${err}`);
    };

    if (!this.pdfDocument || !this.downloadComplete) {
      downloadByUrl();
      return;
    }

    this.pdfDocument.getData().then(function (data) {
      const blob = new Blob([data], {
        type: 'application/pdf'
      });
      downloadManager.download(blob, url, filename);
    }).catch(downloadByUrl);
  },

  fallback(featureId) {},

  error(message, moreInfo) {
    let moreInfoText = [this.l10n.get('error_version_info', {
      version: _pdfjsLib.version || '?',
      build: _pdfjsLib.build || '?'
    }, 'PDF.js v{{version}} (build: {{build}})')];

    if (moreInfo) {
      moreInfoText.push(this.l10n.get('error_message', {
        message: moreInfo.message
      }, 'Message: {{message}}'));

      if (moreInfo.stack) {
        moreInfoText.push(this.l10n.get('error_stack', {
          stack: moreInfo.stack
        }, 'Stack: {{stack}}'));
      } else {
        if (moreInfo.filename) {
          moreInfoText.push(this.l10n.get('error_file', {
            file: moreInfo.filename
          }, 'File: {{file}}'));
        }

        if (moreInfo.lineNumber) {
          moreInfoText.push(this.l10n.get('error_line', {
            line: moreInfo.lineNumber
          }, 'Line: {{line}}'));
        }
      }
    }

    let errorWrapperConfig = this.appConfig.errorWrapper;
    let errorWrapper = errorWrapperConfig.container;
    errorWrapper.removeAttribute('hidden');
    let errorMessage = errorWrapperConfig.errorMessage;
    errorMessage.textContent = message;
    let closeButton = errorWrapperConfig.closeButton;

    closeButton.onclick = function () {
      errorWrapper.setAttribute('hidden', 'true');
    };

    let errorMoreInfo = errorWrapperConfig.errorMoreInfo;
    let moreInfoButton = errorWrapperConfig.moreInfoButton;
    let lessInfoButton = errorWrapperConfig.lessInfoButton;

    moreInfoButton.onclick = function () {
      errorMoreInfo.removeAttribute('hidden');
      moreInfoButton.setAttribute('hidden', 'true');
      lessInfoButton.removeAttribute('hidden');
      errorMoreInfo.style.height = errorMoreInfo.scrollHeight + 'px';
    };

    lessInfoButton.onclick = function () {
      errorMoreInfo.setAttribute('hidden', 'true');
      moreInfoButton.removeAttribute('hidden');
      lessInfoButton.setAttribute('hidden', 'true');
    };

    moreInfoButton.oncontextmenu = _ui_utils.noContextMenuHandler;
    lessInfoButton.oncontextmenu = _ui_utils.noContextMenuHandler;
    closeButton.oncontextmenu = _ui_utils.noContextMenuHandler;
    moreInfoButton.removeAttribute('hidden');
    lessInfoButton.setAttribute('hidden', 'true');
    Promise.all(moreInfoText).then(parts => {
      errorMoreInfo.value = parts.join('\n');
    });
  },

  progress(level) {
    if (this.downloadComplete) {
      return;
    }

    let percent = Math.round(level * 100);

    if (percent > this.loadingBar.percent || isNaN(percent)) {
      this.loadingBar.percent = percent;
      const disableAutoFetch = this.pdfDocument ? this.pdfDocument.loadingParams['disableAutoFetch'] : _app_options.AppOptions.get('disableAutoFetch');

      if (disableAutoFetch && percent) {
        if (this.disableAutoFetchLoadingBarTimeout) {
          clearTimeout(this.disableAutoFetchLoadingBarTimeout);
          this.disableAutoFetchLoadingBarTimeout = null;
        }

        this.loadingBar.show();
        this.disableAutoFetchLoadingBarTimeout = setTimeout(() => {
          this.loadingBar.hide();
          this.disableAutoFetchLoadingBarTimeout = null;
        }, DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT);
      }
    }
  },

  load(pdfDocument) {
    this.pdfDocument = pdfDocument;
    pdfDocument.getDownloadInfo().then(() => {
      this.downloadComplete = true;
      this.loadingBar.hide();
      firstPagePromise.then(() => {
        this.eventBus.dispatch('documentloaded', {
          source: this
        });
      });
    });
    const pageLayoutPromise = pdfDocument.getPageLayout().catch(function () {});
    const pageModePromise = pdfDocument.getPageMode().catch(function () {});
    const openActionDestPromise = pdfDocument.getOpenActionDestination().catch(function () {});
    this.toolbar.setPagesCount(pdfDocument.numPages, false);
    this.secondaryToolbar.setPagesCount(pdfDocument.numPages);
    const store = this.store = new _view_history.ViewHistory(pdfDocument.fingerprint);
    let baseDocumentUrl;
    baseDocumentUrl = null;
    this.pdfLinkService.setDocument(pdfDocument, baseDocumentUrl);
    this.pdfDocumentProperties.setDocument(pdfDocument, this.url);
    let pdfViewer = this.pdfViewer;
    pdfViewer.setDocument(pdfDocument);
    let firstPagePromise = pdfViewer.firstPagePromise;
    let pagesPromise = pdfViewer.pagesPromise;
    let onePageRendered = pdfViewer.onePageRendered;
    let pdfThumbnailViewer = this.pdfThumbnailViewer;
    pdfThumbnailViewer.setDocument(pdfDocument);
    firstPagePromise.then(pdfPage => {
      this.loadingBar.setWidth(this.appConfig.viewerContainer);
      const storePromise = store.getMultiple({
        page: null,
        zoom: _ui_utils.DEFAULT_SCALE_VALUE,
        scrollLeft: '0',
        scrollTop: '0',
        rotation: null,
        sidebarView: _pdf_sidebar.SidebarView.UNKNOWN,
        scrollMode: _ui_utils.ScrollMode.UNKNOWN,
        spreadMode: _ui_utils.SpreadMode.UNKNOWN
      }).catch(() => {});
      Promise.all([_ui_utils.animationStarted, storePromise, pageLayoutPromise, pageModePromise, openActionDestPromise]).then(async ([timeStamp, values = {}, pageLayout, pageMode, openActionDest]) => {
        const viewOnLoad = _app_options.AppOptions.get('viewOnLoad');

        this._initializePdfHistory({
          fingerprint: pdfDocument.fingerprint,
          viewOnLoad,
          initialDest: openActionDest
        });

        const initialBookmark = this.initialBookmark;

        const zoom = _app_options.AppOptions.get('defaultZoomValue');

        let hash = zoom ? `zoom=${zoom}` : null;
        let rotation = null;

        let sidebarView = _app_options.AppOptions.get('sidebarViewOnLoad');

        let scrollMode = _app_options.AppOptions.get('scrollModeOnLoad');

        let spreadMode = _app_options.AppOptions.get('spreadModeOnLoad');

        if (values.page && viewOnLoad !== ViewOnLoad.INITIAL) {
          hash = `page=${values.page}&zoom=${zoom || values.zoom},` + `${values.scrollLeft},${values.scrollTop}`;
          rotation = parseInt(values.rotation, 10);

          if (sidebarView === _pdf_sidebar.SidebarView.UNKNOWN) {
            sidebarView = values.sidebarView | 0;
          }

          if (scrollMode === _ui_utils.ScrollMode.UNKNOWN) {
            scrollMode = values.scrollMode | 0;
          }

          if (spreadMode === _ui_utils.SpreadMode.UNKNOWN) {
            spreadMode = values.spreadMode | 0;
          }
        }

        if (pageMode && sidebarView === _pdf_sidebar.SidebarView.UNKNOWN) {
          sidebarView = apiPageModeToSidebarView(pageMode);
        }

        if (pageLayout && spreadMode === _ui_utils.SpreadMode.UNKNOWN) {
          spreadMode = apiPageLayoutToSpreadMode(pageLayout);
        }

        this.setInitialView(hash, {
          rotation,
          sidebarView,
          scrollMode,
          spreadMode
        });
        this.eventBus.dispatch('documentinit', {
          source: this
        });

        if (!this.isViewerEmbedded) {
          pdfViewer.focus();
        }

        await Promise.race([pagesPromise, new Promise(resolve => {
          setTimeout(resolve, FORCE_PAGES_LOADED_TIMEOUT);
        })]);

        if (!initialBookmark && !hash) {
          return;
        }

        if (pdfViewer.hasEqualPageSizes) {
          return;
        }

        this.initialBookmark = initialBookmark;
        pdfViewer.currentScaleValue = pdfViewer.currentScaleValue;
        this.setInitialView(hash);
      }).catch(() => {
        this.setInitialView();
      }).then(function () {
        pdfViewer.update();
      });
    });
    pdfDocument.getPageLabels().then(labels => {
      if (!labels || _app_options.AppOptions.get('disablePageLabels')) {
        return;
      }

      let i = 0,
          numLabels = labels.length;

      if (numLabels !== this.pagesCount) {
        console.error('The number of Page Labels does not match ' + 'the number of pages in the document.');
        return;
      }

      while (i < numLabels && labels[i] === (i + 1).toString()) {
        i++;
      }

      if (i === numLabels) {
        return;
      }

      pdfViewer.setPageLabels(labels);
      pdfThumbnailViewer.setPageLabels(labels);
      this.toolbar.setPagesCount(pdfDocument.numPages, true);
      this.toolbar.setPageNumber(pdfViewer.currentPageNumber, pdfViewer.currentPageLabel);
    });
    pagesPromise.then(() => {
      if (!this.supportsPrinting) {
        return;
      }

      pdfDocument.getJavaScript().then(javaScript => {
        if (!javaScript) {
          return;
        }

        javaScript.some(js => {
          if (!js) {
            return false;
          }

          console.warn('Warning: JavaScript is not supported');
          this.fallback(_pdfjsLib.UNSUPPORTED_FEATURES.javaScript);
          return true;
        });
        let regex = /\bprint\s*\(/;

        for (let i = 0, ii = javaScript.length; i < ii; i++) {
          let js = javaScript[i];

          if (js && regex.test(js)) {
            setTimeout(function () {
              window.printPDF();
            });
            return;
          }
        }
      });
    });
    onePageRendered.then(() => {
      pdfDocument.getOutline().then(outline => {
        this.pdfOutlineViewer.render({
          outline
        });
      });
      pdfDocument.getAttachments().then(attachments => {
        this.pdfAttachmentViewer.render({
          attachments
        });
      });
    });
    pdfDocument.getMetadata().then(({
      info,
      metadata,
      contentDispositionFilename
    }) => {
      this.documentInfo = info;
      this.metadata = metadata;
      this.contentDispositionFilename = contentDispositionFilename;
      console.log('PDF viewer: ngx-extended-pdf-viewer running on pdf.js ' + _pdfjsLib.version);
      console.log('PDF ' + pdfDocument.fingerprint + ' [' + info.PDFFormatVersion + ' ' + (info.Producer || '-').trim() + ' / ' + (info.Creator || '-').trim() + ']' + ' (PDF.js: ' + (_pdfjsLib.version || '-') + (_app_options.AppOptions.get('enableWebGL') ? ' [WebGL]' : '') + ' modified by ngx-extended-pdf-viewer)');
      let pdfTitle;

      if (metadata && metadata.has('dc:title')) {
        let title = metadata.get('dc:title');

        if (title !== 'Untitled') {
          pdfTitle = title;
        }
      }

      if (!pdfTitle && info && info['Title']) {
        pdfTitle = info['Title'];
      }

      if (pdfTitle) {
        this.setTitle(`${pdfTitle} - ${contentDispositionFilename || document.title}`);
      } else if (contentDispositionFilename) {
        this.setTitle(contentDispositionFilename);
      }

      if (info.IsAcroFormPresent) {
        console.warn('Warning: AcroForm/XFA is not supported');
        this.fallback(_pdfjsLib.UNSUPPORTED_FEATURES.forms);
      }
    });
  },

  _initializePdfHistory({
    fingerprint,
    viewOnLoad,
    initialDest = null
  }) {
    if (_app_options.AppOptions.get('disableHistory') || this.isViewerEmbedded) {
      return;
    }

    this.pdfHistory.initialize({
      fingerprint,
      resetHistory: viewOnLoad === ViewOnLoad.INITIAL,
      updateUrl: _app_options.AppOptions.get('historyUpdateUrl')
    });

    if (this.pdfHistory.initialBookmark) {
      this.initialBookmark = this.pdfHistory.initialBookmark;
      this.initialRotation = this.pdfHistory.initialRotation;
    }

    if (initialDest && !this.initialBookmark && viewOnLoad === ViewOnLoad.UNKNOWN) {
      this.initialBookmark = JSON.stringify(initialDest);
      this.pdfHistory.push({
        explicitDest: initialDest,
        pageNumber: null
      });
    }
  },

  setInitialView(storedHash, {
    rotation,
    sidebarView,
    scrollMode,
    spreadMode
  } = {}) {
    const setRotation = angle => {
      if ((0, _ui_utils.isValidRotation)(angle)) {
        this.pdfViewer.pagesRotation = angle;
      }
    };

    const setViewerModes = (scroll, spread) => {
      if ((0, _ui_utils.isValidScrollMode)(scroll)) {
        this.pdfViewer.scrollMode = scroll;
      }

      if ((0, _ui_utils.isValidSpreadMode)(spread)) {
        this.pdfViewer.spreadMode = spread;
      }
    };

    this.isInitialViewSet = true;
    this.pdfSidebar.setInitialView(sidebarView);
    setViewerModes(scrollMode, spreadMode);

    if (this.initialBookmark) {
      setRotation(this.initialRotation);
      delete this.initialRotation;
      this.pdfLinkService.setHash(this.initialBookmark);
      this.initialBookmark = null;
    } else if (storedHash) {
      setRotation(rotation);
      this.pdfLinkService.setHash(storedHash);
    }

    this.toolbar.setPageNumber(this.pdfViewer.currentPageNumber, this.pdfViewer.currentPageLabel);
    this.secondaryToolbar.setPageNumber(this.pdfViewer.currentPageNumber);

    if (!this.pdfViewer.currentScaleValue) {
      this.pdfViewer.currentScaleValue = _ui_utils.DEFAULT_SCALE_VALUE;
    }
  },

  cleanup() {
    if (!this.pdfDocument) {
      return;
    }

    this.pdfViewer.cleanup();
    this.pdfThumbnailViewer.cleanup();

    if (this.pdfViewer.renderer !== _ui_utils.RendererType.SVG) {
      this.pdfDocument.cleanup();
    }
  },

  forceRendering() {
    this.pdfRenderingQueue.printing = this.printing;
    this.pdfRenderingQueue.isThumbnailViewEnabled = this.pdfSidebar.isThumbnailViewVisible;
    this.pdfRenderingQueue.renderHighestPriority();
  },

  beforePrint() {
    if (this.printService) {
      return;
    }

    if (!this.supportsPrinting) {
      this.l10n.get('printing_not_supported', null, 'Warning: Printing is not fully supported by ' + 'this browser.').then(printMessage => {
        this.error(printMessage);
      });
      return;
    }

    if (!this.pdfViewer.pageViewsReady) {
      this.l10n.get('printing_not_ready', null, 'Warning: The PDF is not fully loaded for printing.').then(notReadyMessage => {
        window.alert(notReadyMessage);
      });
      return;
    }

    let pagesOverview = this.pdfViewer.getPagesOverview();
    let printContainer = this.appConfig.printContainer;
    let printService = PDFPrintServiceFactory.instance.createPrintService(this.pdfDocument, pagesOverview, printContainer, this.l10n);
    this.printService = printService;
    this.forceRendering();
    printService.layout();
  },

  afterPrint() {
    if (this.printService) {
document.body.removeAttribute('data-pdfjsprinting');
      this.printService.destroy();
      this.printService = null;
    }

    this.forceRendering();
  },

  rotatePages(delta) {
    if (!this.pdfDocument) {
      return;
    }

    let newRotation = (this.pdfViewer.pagesRotation + 360 + delta) % 360;
    this.pdfViewer.pagesRotation = newRotation;
  },

  requestPresentationMode() {
    if (!this.pdfPresentationMode) {
      return;
    }

    this.pdfPresentationMode.request();
  },

  bindEvents() {
    let {
      eventBus,
      _boundEvents
    } = this;
    _boundEvents.beforePrint = this.beforePrint.bind(this);
    _boundEvents.afterPrint = this.afterPrint.bind(this);
    eventBus.on('resize', webViewerResize);
    eventBus.on('hashchange', webViewerHashchange);
    eventBus.on('beforeprint', _boundEvents.beforePrint);
    eventBus.on('afterprint', _boundEvents.afterPrint);
    eventBus.on('pagerendered', webViewerPageRendered);
    eventBus.on('textlayerrendered', webViewerTextLayerRendered);
    eventBus.on('updateviewarea', webViewerUpdateViewarea);
    eventBus.on('pagechanging', webViewerPageChanging);
    eventBus.on('scalechanging', webViewerScaleChanging);
    eventBus.on('rotationchanging', webViewerRotationChanging);
    eventBus.on('sidebarviewchanged', webViewerSidebarViewChanged);
    eventBus.on('pagemode', webViewerPageMode);
    eventBus.on('namedaction', webViewerNamedAction);
    eventBus.on('presentationmodechanged', webViewerPresentationModeChanged);
    eventBus.on('presentationmode', webViewerPresentationMode);
    eventBus.on('openfile', webViewerOpenFile);
    eventBus.on('print', webViewerPrint);
    eventBus.on('download', webViewerDownload);
    eventBus.on('firstpage', webViewerFirstPage);
    eventBus.on('lastpage', webViewerLastPage);
    eventBus.on('nextpage', webViewerNextPage);
    eventBus.on('previouspage', webViewerPreviousPage);
    eventBus.on('zoomin', webViewerZoomIn);
    eventBus.on('zoomout', webViewerZoomOut);
    eventBus.on('zoomreset', webViewerZoomReset);
    eventBus.on('pagenumberchanged', webViewerPageNumberChanged);
    eventBus.on('scalechanged', webViewerScaleChanged);
    eventBus.on('rotatecw', webViewerRotateCw);
    eventBus.on('rotateccw', webViewerRotateCcw);
    eventBus.on('switchscrollmode', webViewerSwitchScrollMode);
    eventBus.on('scrollmodechanged', webViewerScrollModeChanged);
    eventBus.on('switchspreadmode', webViewerSwitchSpreadMode);
    eventBus.on('spreadmodechanged', webViewerSpreadModeChanged);
    eventBus.on('documentproperties', webViewerDocumentProperties);
    eventBus.on('find', webViewerFind);
    eventBus.on('findfromurlhash', webViewerFindFromUrlHash);
    eventBus.on('updatefindmatchescount', webViewerUpdateFindMatchesCount);
    eventBus.on('updatefindcontrolstate', webViewerUpdateFindControlState);
    eventBus.on('fileinputchange', webViewerFileInputChange);
  },

  bindWindowEvents() {
    let {
      eventBus,
      _boundEvents
    } = this;

    _boundEvents.windowResize = () => {
      eventBus.dispatch('resize', {
        source: window
      });
    };

    _boundEvents.windowHashChange = () => {
      eventBus.dispatch('hashchange', {
        source: window,
        hash: document.location.hash.substring(1)
      });
    };

    _boundEvents.windowBeforePrint = () => {
      eventBus.dispatch('beforeprint', {
        source: window
      });
    };

    _boundEvents.windowAfterPrint = () => {
      eventBus.dispatch('afterprint', {
        source: window
      });
    };

    window.addEventListener('visibilitychange', webViewerVisibilityChange);
    window.addEventListener('wheel', webViewerWheel, {
      passive: false
    });
    window.addEventListener('click', webViewerClick);
    window.addEventListener('keydown', webViewerKeyDown);
    window.addEventListener('resize', _boundEvents.windowResize);
    window.addEventListener('hashchange', _boundEvents.windowHashChange);
    window.addEventListener('beforeprint', _boundEvents.windowBeforePrint);
    window.addEventListener('afterprint', _boundEvents.windowAfterPrint);
  },

  unbindEvents() {
    let {
      eventBus,
      _boundEvents
    } = this;
    eventBus.off('resize', webViewerResize);
    eventBus.off('hashchange', webViewerHashchange);
    eventBus.off('beforeprint', _boundEvents.beforePrint);
    eventBus.off('afterprint', _boundEvents.afterPrint);
    eventBus.off('pagerendered', webViewerPageRendered);
    eventBus.off('textlayerrendered', webViewerTextLayerRendered);
    eventBus.off('updateviewarea', webViewerUpdateViewarea);
    eventBus.off('pagechanging', webViewerPageChanging);
    eventBus.off('scalechanging', webViewerScaleChanging);
    eventBus.off('rotationchanging', webViewerRotationChanging);
    eventBus.off('sidebarviewchanged', webViewerSidebarViewChanged);
    eventBus.off('pagemode', webViewerPageMode);
    eventBus.off('namedaction', webViewerNamedAction);
    eventBus.off('presentationmodechanged', webViewerPresentationModeChanged);
    eventBus.off('presentationmode', webViewerPresentationMode);
    eventBus.off('openfile', webViewerOpenFile);
    eventBus.off('print', webViewerPrint);