pdfjs-dist/lib/web/app.js

/* Copyright 2017 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.
 */
'use strict';
var uiUtilsLib = require('./ui_utils.js');
var downloadManagerLib = require('./download_manager.js');
var pdfHistoryLib = require('./pdf_history.js');
var preferencesLib = require('./preferences.js');
var pdfSidebarLib = require('./pdf_sidebar.js');
var viewHistoryLib = require('./view_history.js');
var pdfThumbnailViewerLib = require('./pdf_thumbnail_viewer.js');
var toolbarLib = require('./toolbar.js');
var secondaryToolbarLib = require('./secondary_toolbar.js');
var passwordPromptLib = require('./password_prompt.js');
var pdfPresentationModeLib = require('./pdf_presentation_mode.js');
var pdfDocumentPropertiesLib = require('./pdf_document_properties.js');
var handToolLib = require('./hand_tool.js');
var pdfViewerLib = require('./pdf_viewer.js');
var pdfRenderingQueueLib = require('./pdf_rendering_queue.js');
var pdfLinkServiceLib = require('./pdf_link_service.js');
var pdfOutlineViewerLib = require('./pdf_outline_viewer.js');
var overlayManagerLib = require('./overlay_manager.js');
var pdfAttachmentViewerLib = require('./pdf_attachment_viewer.js');
var pdfFindControllerLib = require('./pdf_find_controller.js');
var pdfFindBarLib = require('./pdf_find_bar.js');
var domEventsLib = require('./dom_events.js');
var pdfjsLib = require('./pdfjs.js');
var UNKNOWN_SCALE = uiUtilsLib.UNKNOWN_SCALE;
var DEFAULT_SCALE_VALUE = uiUtilsLib.DEFAULT_SCALE_VALUE;
var MIN_SCALE = uiUtilsLib.MIN_SCALE;
var MAX_SCALE = uiUtilsLib.MAX_SCALE;
var ProgressBar = uiUtilsLib.ProgressBar;
var getPDFFileNameFromURL = uiUtilsLib.getPDFFileNameFromURL;
var noContextMenuHandler = uiUtilsLib.noContextMenuHandler;
var mozL10n = uiUtilsLib.mozL10n;
var parseQueryString = uiUtilsLib.parseQueryString;
var PDFHistory = pdfHistoryLib.PDFHistory;
var Preferences = preferencesLib.Preferences;
var SidebarView = pdfSidebarLib.SidebarView;
var PDFSidebar = pdfSidebarLib.PDFSidebar;
var ViewHistory = viewHistoryLib.ViewHistory;
var PDFThumbnailViewer = pdfThumbnailViewerLib.PDFThumbnailViewer;
var Toolbar = toolbarLib.Toolbar;
var SecondaryToolbar = secondaryToolbarLib.SecondaryToolbar;
var PasswordPrompt = passwordPromptLib.PasswordPrompt;
var PDFPresentationMode = pdfPresentationModeLib.PDFPresentationMode;
var PDFDocumentProperties = pdfDocumentPropertiesLib.PDFDocumentProperties;
var HandTool = handToolLib.HandTool;
var PresentationModeState = pdfViewerLib.PresentationModeState;
var PDFViewer = pdfViewerLib.PDFViewer;
var RenderingStates = pdfRenderingQueueLib.RenderingStates;
var PDFRenderingQueue = pdfRenderingQueueLib.PDFRenderingQueue;
var PDFLinkService = pdfLinkServiceLib.PDFLinkService;
var PDFOutlineViewer = pdfOutlineViewerLib.PDFOutlineViewer;
var OverlayManager = overlayManagerLib.OverlayManager;
var PDFAttachmentViewer = pdfAttachmentViewerLib.PDFAttachmentViewer;
var PDFFindController = pdfFindControllerLib.PDFFindController;
var PDFFindBar = pdfFindBarLib.PDFFindBar;
var getGlobalEventBus = domEventsLib.getGlobalEventBus;
var normalizeWheelEventDelta = uiUtilsLib.normalizeWheelEventDelta;
var animationStarted = uiUtilsLib.animationStarted;
var localized = uiUtilsLib.localized;
var RendererType = uiUtilsLib.RendererType;
var DEFAULT_SCALE_DELTA = 1.1;
var DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT = 5000;
function configure(PDFJS) {
 PDFJS.imageResourcesPath = './images/';
 PDFJS.workerSrc = '../build/pdf.worker.js';
 PDFJS.cMapUrl = '../web/cmaps/';
 PDFJS.cMapPacked = true;
}
var DefaultExernalServices = {
 updateFindControlState: function (data) {
 },
 initPassiveLoading: function (callbacks) {
 },
 fallback: function (data, callback) {
 },
 reportTelemetry: function (data) {
 },
 createDownloadManager: function () {
  return new downloadManagerLib.DownloadManager();
 },
 supportsIntegratedFind: false,
 supportsDocumentFonts: true,
 supportsDocumentColors: true,
 supportedMouseWheelZoomModifierKeys: {
  ctrlKey: true,
  metaKey: true
 }
};
var PDFViewerApplication = {
 initialBookmark: document.location.hash.substring(1),
 initialDestination: null,
 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,
 pdfOutlineViewer: null,
 pdfAttachmentViewer: null,
 store: null,
 downloadManager: null,
 toolbar: null,
 secondaryToolbar: null,
 eventBus: null,
 pageRotation: 0,
 isInitialViewSet: false,
 viewerPrefs: {
  sidebarViewOnLoad: SidebarView.NONE,
  pdfBugEnabled: false,
  showPreviousViewOnLoad: true,
  defaultZoomValue: '',
  disablePageLabels: false,
  renderer: 'canvas',
  enhanceTextSelection: false,
  renderInteractiveForms: false,
  enablePrintAutoRotate: false
 },
 isViewerEmbedded: window.parent !== window,
 url: '',
 baseUrl: '',
 externalServices: DefaultExernalServices,
 initialize: function pdfViewInitialize(appConfig) {
  var self = this;
  var PDFJS = pdfjsLib.PDFJS;
  Preferences.initialize();
  this.preferences = Preferences;
  configure(PDFJS);
  this.appConfig = appConfig;
  return this._readPreferences().then(function () {
   return self._initializeViewerComponents();
  }).then(function () {
   self.bindEvents();
   self.bindWindowEvents();
   localized.then(function () {
    self.eventBus.dispatch('localized');
   });
   if (self.isViewerEmbedded && !PDFJS.isExternalLinkTargetSet()) {
    PDFJS.externalLinkTarget = PDFJS.LinkTarget.TOP;
   }
   self.initialized = true;
  });
 },
 _readPreferences: function () {
  var self = this;
  var PDFJS = pdfjsLib.PDFJS;
  return Promise.all([
   Preferences.get('enableWebGL').then(function resolved(value) {
    PDFJS.disableWebGL = !value;
   }),
   Preferences.get('sidebarViewOnLoad').then(function resolved(value) {
    self.viewerPrefs['sidebarViewOnLoad'] = value;
   }),
   Preferences.get('pdfBugEnabled').then(function resolved(value) {
    self.viewerPrefs['pdfBugEnabled'] = value;
   }),
   Preferences.get('showPreviousViewOnLoad').then(function resolved(value) {
    self.viewerPrefs['showPreviousViewOnLoad'] = value;
   }),
   Preferences.get('defaultZoomValue').then(function resolved(value) {
    self.viewerPrefs['defaultZoomValue'] = value;
   }),
   Preferences.get('enhanceTextSelection').then(function resolved(value) {
    self.viewerPrefs['enhanceTextSelection'] = value;
   }),
   Preferences.get('disableTextLayer').then(function resolved(value) {
    if (PDFJS.disableTextLayer === true) {
     return;
    }
    PDFJS.disableTextLayer = value;
   }),
   Preferences.get('disableRange').then(function resolved(value) {
    if (PDFJS.disableRange === true) {
     return;
    }
    PDFJS.disableRange = value;
   }),
   Preferences.get('disableStream').then(function resolved(value) {
    if (PDFJS.disableStream === true) {
     return;
    }
    PDFJS.disableStream = value;
   }),
   Preferences.get('disableAutoFetch').then(function resolved(value) {
    PDFJS.disableAutoFetch = value;
   }),
   Preferences.get('disableFontFace').then(function resolved(value) {
    if (PDFJS.disableFontFace === true) {
     return;
    }
    PDFJS.disableFontFace = value;
   }),
   Preferences.get('useOnlyCssZoom').then(function resolved(value) {
    PDFJS.useOnlyCssZoom = value;
   }),
   Preferences.get('externalLinkTarget').then(function resolved(value) {
    if (PDFJS.isExternalLinkTargetSet()) {
     return;
    }
    PDFJS.externalLinkTarget = value;
   }),
   Preferences.get('renderer').then(function resolved(value) {
    self.viewerPrefs['renderer'] = value;
   }),
   Preferences.get('renderInteractiveForms').then(function resolved(value) {
    self.viewerPrefs['renderInteractiveForms'] = value;
   }),
   Preferences.get('disablePageLabels').then(function resolved(value) {
    self.viewerPrefs['disablePageLabels'] = value;
   }),
   Preferences.get('enablePrintAutoRotate').then(function resolved(value) {
    self.viewerPrefs['enablePrintAutoRotate'] = value;
   })
  ]).catch(function (reason) {
  });
 },
 _initializeViewerComponents: function () {
  var self = this;
  var appConfig = this.appConfig;
  return new Promise(function (resolve, reject) {
   var eventBus = appConfig.eventBus || getGlobalEventBus();
   self.eventBus = eventBus;
   var pdfRenderingQueue = new PDFRenderingQueue();
   pdfRenderingQueue.onIdle = self.cleanup.bind(self);
   self.pdfRenderingQueue = pdfRenderingQueue;
   var pdfLinkService = new PDFLinkService({ eventBus: eventBus });
   self.pdfLinkService = pdfLinkService;
   var downloadManager = self.externalServices.createDownloadManager();
   self.downloadManager = downloadManager;
   var container = appConfig.mainContainer;
   var viewer = appConfig.viewerContainer;
   self.pdfViewer = new PDFViewer({
    container: container,
    viewer: viewer,
    eventBus: eventBus,
    renderingQueue: pdfRenderingQueue,
    linkService: pdfLinkService,
    downloadManager: downloadManager,
    renderer: self.viewerPrefs['renderer'],
    enhanceTextSelection: self.viewerPrefs['enhanceTextSelection'],
    renderInteractiveForms: self.viewerPrefs['renderInteractiveForms'],
    enablePrintAutoRotate: self.viewerPrefs['enablePrintAutoRotate']
   });
   pdfRenderingQueue.setViewer(self.pdfViewer);
   pdfLinkService.setViewer(self.pdfViewer);
   var thumbnailContainer = appConfig.sidebar.thumbnailView;
   self.pdfThumbnailViewer = new PDFThumbnailViewer({
    container: thumbnailContainer,
    renderingQueue: pdfRenderingQueue,
    linkService: pdfLinkService
   });
   pdfRenderingQueue.setThumbnailViewer(self.pdfThumbnailViewer);
   self.pdfHistory = new PDFHistory({
    linkService: pdfLinkService,
    eventBus: eventBus
   });
   pdfLinkService.setHistory(self.pdfHistory);
   self.findController = new PDFFindController({ pdfViewer: self.pdfViewer });
   self.findController.onUpdateResultsCount = function (matchCount) {
    if (self.supportsIntegratedFind) {
     return;
    }
    self.findBar.updateResultsCount(matchCount);
   };
   self.findController.onUpdateState = function (state, previous, matchCount) {
    if (self.supportsIntegratedFind) {
     self.externalServices.updateFindControlState({
      result: state,
      findPrevious: previous
     });
    } else {
     self.findBar.updateUIState(state, previous, matchCount);
    }
   };
   self.pdfViewer.setFindController(self.findController);
   var findBarConfig = Object.create(appConfig.findBar);
   findBarConfig.findController = self.findController;
   findBarConfig.eventBus = eventBus;
   self.findBar = new PDFFindBar(findBarConfig);
   self.overlayManager = OverlayManager;
   self.handTool = new HandTool({
    container: container,
    eventBus: eventBus
   });
   self.pdfDocumentProperties = new PDFDocumentProperties(appConfig.documentProperties);
   self.toolbar = new Toolbar(appConfig.toolbar, container, eventBus);
   self.secondaryToolbar = new SecondaryToolbar(appConfig.secondaryToolbar, container, eventBus);
   if (self.supportsFullscreen) {
    self.pdfPresentationMode = new PDFPresentationMode({
     container: container,
     viewer: viewer,
     pdfViewer: self.pdfViewer,
     eventBus: eventBus,
     contextMenuItems: appConfig.fullscreen
    });
   }
   self.passwordPrompt = new PasswordPrompt(appConfig.passwordOverlay);
   self.pdfOutlineViewer = new PDFOutlineViewer({
    container: appConfig.sidebar.outlineView,
    eventBus: eventBus,
    linkService: pdfLinkService
   });
   self.pdfAttachmentViewer = new PDFAttachmentViewer({
    container: appConfig.sidebar.attachmentsView,
    eventBus: eventBus,
    downloadManager: downloadManager
   });
   var sidebarConfig = Object.create(appConfig.sidebar);
   sidebarConfig.pdfViewer = self.pdfViewer;
   sidebarConfig.pdfThumbnailViewer = self.pdfThumbnailViewer;
   sidebarConfig.pdfOutlineViewer = self.pdfOutlineViewer;
   sidebarConfig.eventBus = eventBus;
   self.pdfSidebar = new PDFSidebar(sidebarConfig);
   self.pdfSidebar.onToggled = self.forceRendering.bind(self);
   resolve(undefined);
  });
 },
 run: function pdfViewRun(config) {
  this.initialize(config).then(webViewerInitialized);
 },
 zoomIn: function pdfViewZoomIn(ticks) {
  var newScale = this.pdfViewer.currentScale;
  do {
   newScale = (newScale * DEFAULT_SCALE_DELTA).toFixed(2);
   newScale = Math.ceil(newScale * 10) / 10;
   newScale = Math.min(MAX_SCALE, newScale);
  } while (--ticks > 0 && newScale < MAX_SCALE);
  this.pdfViewer.currentScaleValue = newScale;
 },
 zoomOut: function pdfViewZoomOut(ticks) {
  var newScale = this.pdfViewer.currentScale;
  do {
   newScale = (newScale / DEFAULT_SCALE_DELTA).toFixed(2);
   newScale = Math.floor(newScale * 10) / 10;
   newScale = Math.max(MIN_SCALE, newScale);
  } while (--ticks > 0 && newScale > MIN_SCALE);
  this.pdfViewer.currentScaleValue = newScale;
 },
 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() {
  var support;
  var 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;
  }
  if (support && pdfjsLib.PDFJS.disableFullscreen === true) {
   support = false;
  }
  return 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() {
  var bar = new ProgressBar('#loadingBar', {});
  return pdfjsLib.shadow(this, 'loadingBar', bar);
 },
 get supportedMouseWheelZoomModifierKeys() {
  return this.externalServices.supportedMouseWheelZoomModifierKeys;
 },
 initPassiveLoading: function pdfViewInitPassiveLoading() {
  throw new Error('Not implemented: initPassiveLoading');
 },
 setTitleUsingUrl: function pdfViewSetTitleUsingUrl(url) {
  this.url = url;
  this.baseUrl = url.split('#')[0];
  var title = getPDFFileNameFromURL(url, '');
  if (!title) {
   try {
    title = decodeURIComponent(pdfjsLib.getFilenameFromUrl(url)) || url;
   } catch (e) {
    title = url;
   }
  }
  this.setTitle(title);
 },
 setTitle: function pdfViewSetTitle(title) {
  if (this.isViewerEmbedded) {
   return;
  }
  document.title = title;
 },
 close: function pdfViewClose() {
  var errorWrapper = this.appConfig.errorWrapper.container;
  errorWrapper.setAttribute('hidden', 'true');
  if (!this.pdfLoadingTask) {
   return Promise.resolve();
  }
  var 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, null);
  }
  this.store = null;
  this.isInitialViewSet = false;
  this.pdfSidebar.reset();
  this.pdfOutlineViewer.reset();
  this.pdfAttachmentViewer.reset();
  this.findController.reset();
  this.findBar.reset();
  this.toolbar.reset();
  this.secondaryToolbar.reset();
  if (typeof PDFBug !== 'undefined') {
   PDFBug.cleanup();
  }
  return promise;
 },
 open: function pdfViewOpen(file, args) {
  if (arguments.length > 2 || typeof args === 'number') {
   return Promise.reject(new Error('Call of open() with obsolete signature.'));
  }
  if (this.pdfLoadingTask) {
   return this.close().then(function () {
    Preferences.reload();
    return this.open(file, args);
   }.bind(this));
  }
  var parameters = Object.create(null), scale;
  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;
  }
  if (args) {
   for (var prop in args) {
    parameters[prop] = args[prop];
   }
   if (args.scale) {
    scale = args.scale;
   }
   if (args.length) {
    this.pdfDocumentProperties.setFileSize(args.length);
   }
  }
  var self = this;
  self.downloadComplete = false;
  var loadingTask = pdfjsLib.getDocument(parameters);
  this.pdfLoadingTask = loadingTask;
  loadingTask.onPassword = function passwordNeeded(updateCallback, reason) {
   self.passwordPrompt.setUpdateCallback(updateCallback, reason);
   self.passwordPrompt.open();
  };
  loadingTask.onProgress = function getDocumentProgress(progressData) {
   self.progress(progressData.loaded / progressData.total);
  };
  loadingTask.onUnsupportedFeature = this.fallback.bind(this);
  return loadingTask.promise.then(function getDocumentCallback(pdfDocument) {
   self.load(pdfDocument, scale);
  }, function getDocumentError(exception) {
   var message = exception && exception.message;
   var loadingErrorMessage = mozL10n.get('loading_error', null, 'An error occurred while loading the PDF.');
   if (exception instanceof pdfjsLib.InvalidPDFException) {
    loadingErrorMessage = mozL10n.get('invalid_file_error', null, 'Invalid or corrupted PDF file.');
   } else if (exception instanceof pdfjsLib.MissingPDFException) {
    loadingErrorMessage = mozL10n.get('missing_file_error', null, 'Missing PDF file.');
   } else if (exception instanceof pdfjsLib.UnexpectedResponseException) {
    loadingErrorMessage = mozL10n.get('unexpected_response_error', null, 'Unexpected server response.');
   }
   var moreInfo = { message: message };
   self.error(loadingErrorMessage, moreInfo);
   throw new Error(loadingErrorMessage);
  });
 },
 download: function pdfViewDownload() {
  function downloadByUrl() {
   downloadManager.downloadUrl(url, filename);
  }
  var url = this.baseUrl;
  var filename = getPDFFileNameFromURL(this.url);
  var downloadManager = this.downloadManager;
  downloadManager.onerror = function (err) {
   PDFViewerApplication.error('PDF failed to download.');
  };
  if (!this.pdfDocument) {
   downloadByUrl();
   return;
  }
  if (!this.downloadComplete) {
   downloadByUrl();
   return;
  }
  this.pdfDocument.getData().then(function getDataSuccess(data) {
   var blob = pdfjsLib.createBlob(data, 'application/pdf');
   downloadManager.download(blob, url, filename);
  }, downloadByUrl).then(null, downloadByUrl);
 },
 fallback: function pdfViewFallback(featureId) {
 },
 error: function pdfViewError(message, moreInfo) {
  var moreInfoText = mozL10n.get('error_version_info', {
   version: pdfjsLib.version || '?',
   build: pdfjsLib.build || '?'
  }, 'PDF.js v{{version}} (build: {{build}})') + '\n';
  if (moreInfo) {
   moreInfoText += mozL10n.get('error_message', { message: moreInfo.message }, 'Message: {{message}}');
   if (moreInfo.stack) {
    moreInfoText += '\n' + mozL10n.get('error_stack', { stack: moreInfo.stack }, 'Stack: {{stack}}');
   } else {
    if (moreInfo.filename) {
     moreInfoText += '\n' + mozL10n.get('error_file', { file: moreInfo.filename }, 'File: {{file}}');
    }
    if (moreInfo.lineNumber) {
     moreInfoText += '\n' + mozL10n.get('error_line', { line: moreInfo.lineNumber }, 'Line: {{line}}');
    }
   }
  }
  var errorWrapperConfig = this.appConfig.errorWrapper;
  var errorWrapper = errorWrapperConfig.container;
  errorWrapper.removeAttribute('hidden');
  var errorMessage = errorWrapperConfig.errorMessage;
  errorMessage.textContent = message;
  var closeButton = errorWrapperConfig.closeButton;
  closeButton.onclick = function () {
   errorWrapper.setAttribute('hidden', 'true');
  };
  var errorMoreInfo = errorWrapperConfig.errorMoreInfo;
  var moreInfoButton = errorWrapperConfig.moreInfoButton;
  var 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 = noContextMenuHandler;
  lessInfoButton.oncontextmenu = noContextMenuHandler;
  closeButton.oncontextmenu = noContextMenuHandler;
  moreInfoButton.removeAttribute('hidden');
  lessInfoButton.setAttribute('hidden', 'true');
  errorMoreInfo.value = moreInfoText;
 },
 progress: function pdfViewProgress(level) {
  var percent = Math.round(level * 100);
  if (percent > this.loadingBar.percent || isNaN(percent)) {
   this.loadingBar.percent = percent;
   if (pdfjsLib.PDFJS.disableAutoFetch && percent) {
    if (this.disableAutoFetchLoadingBarTimeout) {
     clearTimeout(this.disableAutoFetchLoadingBarTimeout);
     this.disableAutoFetchLoadingBarTimeout = null;
    }
    this.loadingBar.show();
    this.disableAutoFetchLoadingBarTimeout = setTimeout(function () {
     this.loadingBar.hide();
     this.disableAutoFetchLoadingBarTimeout = null;
    }.bind(this), DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT);
   }
  }
 },
 load: function pdfViewLoad(pdfDocument, scale) {
  var self = this;
  scale = scale || UNKNOWN_SCALE;
  this.pdfDocument = pdfDocument;
  this.pdfDocumentProperties.setDocumentAndUrl(pdfDocument, this.url);
  var downloadedPromise = pdfDocument.getDownloadInfo().then(function () {
   self.downloadComplete = true;
   self.loadingBar.hide();
  });
  this.toolbar.setPagesCount(pdfDocument.numPages, false);
  this.secondaryToolbar.setPagesCount(pdfDocument.numPages);
  var id = this.documentFingerprint = pdfDocument.fingerprint;
  var store = this.store = new ViewHistory(id);
  var baseDocumentUrl;
  baseDocumentUrl = null;
  this.pdfLinkService.setDocument(pdfDocument, baseDocumentUrl);
  var pdfViewer = this.pdfViewer;
  pdfViewer.currentScale = scale;
  pdfViewer.setDocument(pdfDocument);
  var firstPagePromise = pdfViewer.firstPagePromise;
  var pagesPromise = pdfViewer.pagesPromise;
  var onePageRendered = pdfViewer.onePageRendered;
  this.pageRotation = 0;
  var pdfThumbnailViewer = this.pdfThumbnailViewer;
  pdfThumbnailViewer.setDocument(pdfDocument);
  firstPagePromise.then(function (pdfPage) {
   downloadedPromise.then(function () {
    self.eventBus.dispatch('documentload', { source: self });
   });
   self.loadingBar.setWidth(self.appConfig.viewerContainer);
   if (!pdfjsLib.PDFJS.disableHistory && !self.isViewerEmbedded) {
    if (!self.viewerPrefs['showPreviousViewOnLoad']) {
     self.pdfHistory.clearHistoryState();
    }
    self.pdfHistory.initialize(self.documentFingerprint);
    if (self.pdfHistory.initialDestination) {
     self.initialDestination = self.pdfHistory.initialDestination;
    } else if (self.pdfHistory.initialBookmark) {
     self.initialBookmark = self.pdfHistory.initialBookmark;
    }
   }
   var initialParams = {
    destination: self.initialDestination,
    bookmark: self.initialBookmark,
    hash: null
   };
   store.initializedPromise.then(function resolved() {
    var storedHash = null, sidebarView = null;
    if (self.viewerPrefs['showPreviousViewOnLoad'] && store.get('exists', false)) {
     var pageNum = store.get('page', '1');
     var zoom = self.viewerPrefs['defaultZoomValue'] || store.get('zoom', DEFAULT_SCALE_VALUE);
     var left = store.get('scrollLeft', '0');
     var top = store.get('scrollTop', '0');
     storedHash = 'page=' + pageNum + '&zoom=' + zoom + ',' + left + ',' + top;
     sidebarView = store.get('sidebarView', SidebarView.NONE);
    } else if (self.viewerPrefs['defaultZoomValue']) {
     storedHash = 'page=1&zoom=' + self.viewerPrefs['defaultZoomValue'];
    }
    self.setInitialView(storedHash, {
     scale: scale,
     sidebarView: sidebarView
    });
    initialParams.hash = storedHash;
    if (!self.isViewerEmbedded) {
     self.pdfViewer.focus();
    }
   }, function rejected(reason) {
    console.error(reason);
    self.setInitialView(null, { scale: scale });
   });
   pagesPromise.then(function resolved() {
    if (!initialParams.destination && !initialParams.bookmark && !initialParams.hash) {
     return;
    }
    if (self.hasEqualPageSizes) {
     return;
    }
    self.initialDestination = initialParams.destination;
    self.initialBookmark = initialParams.bookmark;
    self.pdfViewer.currentScaleValue = self.pdfViewer.currentScaleValue;
    self.setInitialView(initialParams.hash);
   });
  });
  pdfDocument.getPageLabels().then(function (labels) {
   if (!labels || self.viewerPrefs['disablePageLabels']) {
    return;
   }
   var i = 0, numLabels = labels.length;
   if (numLabels !== self.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);
   self.toolbar.setPagesCount(pdfDocument.numPages, true);
   self.toolbar.setPageNumber(pdfViewer.currentPageNumber, pdfViewer.currentPageLabel);
  });
  pagesPromise.then(function () {
   if (self.supportsPrinting) {
    pdfDocument.getJavaScript().then(function (javaScript) {
     if (javaScript.length) {
      console.warn('Warning: JavaScript is not supported');
      self.fallback(pdfjsLib.UNSUPPORTED_FEATURES.javaScript);
     }
     var regex = /\bprint\s*\(/;
     for (var i = 0, ii = javaScript.length; i < ii; i++) {
      var js = javaScript[i];
      if (js && regex.test(js)) {
       setTimeout(function () {
        window.print();
       });
       return;
      }
     }
    });
   }
  });
  Promise.all([
   onePageRendered,
   animationStarted
  ]).then(function () {
   pdfDocument.getOutline().then(function (outline) {
    self.pdfOutlineViewer.render({ outline: outline });
   });
   pdfDocument.getAttachments().then(function (attachments) {
    self.pdfAttachmentViewer.render({ attachments: attachments });
   });
  });
  pdfDocument.getMetadata().then(function (data) {
   var info = data.info, metadata = data.metadata;
   self.documentInfo = info;
   self.metadata = metadata;
   console.log('PDF ' + pdfDocument.fingerprint + ' [' + info.PDFFormatVersion + ' ' + (info.Producer || '-').trim() + ' / ' + (info.Creator || '-').trim() + ']' + ' (PDF.js: ' + (pdfjsLib.version || '-') + (!pdfjsLib.PDFJS.disableWebGL ? ' [WebGL]' : '') + ')');
   var pdfTitle;
   if (metadata && metadata.has('dc:title')) {
    var title = metadata.get('dc:title');
    if (title !== 'Untitled') {
     pdfTitle = title;
    }
   }
   if (!pdfTitle && info && info['Title']) {
    pdfTitle = info['Title'];
   }
   if (pdfTitle) {
    self.setTitle(pdfTitle + ' - ' + document.title);
   }
   if (info.IsAcroFormPresent) {
    console.warn('Warning: AcroForm/XFA is not supported');
    self.fallback(pdfjsLib.UNSUPPORTED_FEATURES.forms);
   }
  });
 },
 setInitialView: function pdfViewSetInitialView(storedHash, options) {
  var scale = options && options.scale;
  var sidebarView = options && options.sidebarView;
  this.isInitialViewSet = true;
  this.pdfSidebar.setInitialView(this.viewerPrefs['sidebarViewOnLoad'] || sidebarView | 0);
  if (this.initialDestination) {
   this.pdfLinkService.navigateTo(this.initialDestination);
   this.initialDestination = null;
  } else if (this.initialBookmark) {
   this.pdfLinkService.setHash(this.initialBookmark);
   this.pdfHistory.push({ hash: this.initialBookmark }, true);
   this.initialBookmark = null;
  } else if (storedHash) {
   this.pdfLinkService.setHash(storedHash);
  } else if (scale) {
   this.pdfViewer.currentScaleValue = scale;
   this.page = 1;
  }
  this.toolbar.setPageNumber(this.pdfViewer.currentPageNumber, this.pdfViewer.currentPageLabel);
  this.secondaryToolbar.setPageNumber(this.pdfViewer.currentPageNumber);
  if (!this.pdfViewer.currentScaleValue) {
   this.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
  }
 },
 cleanup: function pdfViewCleanup() {
  if (!this.pdfDocument) {
   return;
  }
  this.pdfViewer.cleanup();
  this.pdfThumbnailViewer.cleanup();
  if (this.pdfViewer.renderer !== RendererType.SVG) {
   this.pdfDocument.cleanup();
  }
 },
 forceRendering: function pdfViewForceRendering() {
  this.pdfRenderingQueue.printing = this.printing;
  this.pdfRenderingQueue.isThumbnailViewEnabled = this.pdfSidebar.isThumbnailViewVisible;
  this.pdfRenderingQueue.renderHighestPriority();
 },
 beforePrint: function pdfViewSetupBeforePrint() {
  if (this.printService) {
   return;
  }
  if (!this.supportsPrinting) {
   var printMessage = mozL10n.get('printing_not_supported', null, 'Warning: Printing is not fully supported by this browser.');
   this.error(printMessage);
   return;
  }
  if (!this.pdfViewer.pageViewsReady) {
   var notReadyMessage = mozL10n.get('printing_not_ready', null, 'Warning: The PDF is not fully loaded for printing.');
   window.alert(notReadyMessage);
   return;
  }
  var pagesOverview = this.pdfViewer.getPagesOverview();
  var printContainer = this.appConfig.printContainer;
  var printService = PDFPrintServiceFactory.instance.createPrintService(this.pdfDocument, pagesOverview, printContainer);
  this.printService = printService;
  this.forceRendering();
  printService.layout();
 },
 get hasEqualPageSizes() {
  var firstPage = this.pdfViewer.getPageView(0);
  for (var i = 1, ii = this.pagesCount; i < ii; ++i) {
   var pageView = this.pdfViewer.getPageView(i);
   if (pageView.width !== firstPage.width || pageView.height !== firstPage.height) {
    return false;
   }
  }
  return true;
 },
 afterPrint: function pdfViewSetupAfterPrint() {
  if (this.printService) {
   this.printService.destroy();
   this.printService = null;
  }
  this.forceRendering();
 },
 rotatePages: function pdfViewRotatePages(delta) {
  var pageNumber = this.page;
  this.pageRotation = (this.pageRotation + 360 + delta) % 360;
  this.pdfViewer.pagesRotation = this.pageRotation;
  this.pdfThumbnailViewer.pagesRotation = this.pageRotation;
  this.forceRendering();
  this.pdfViewer.currentPageNumber = pageNumber;
 },
 requestPresentationMode: function pdfViewRequestPresentationMode() {
  if (!this.pdfPresentationMode) {
   return;
  }
  this.pdfPresentationMode.request();
 },
 bindEvents: function pdfViewBindEvents() {
  var eventBus = this.eventBus;
  eventBus.on('resize', webViewerResize);
  eventBus.on('hashchange', webViewerHashchange);
  eventBus.on('beforeprint', this.beforePrint.bind(this));
  eventBus.on('afterprint', this.afterPrint.bind(this));
  eventBus.on('pagerendered', webViewerPageRendered);
  eventBus.on('textlayerrendered', webViewerTextLayerRendered);
  eventBus.on('updateviewarea', webViewerUpdateViewarea);
  eventBus.on('pagechanging', webViewerPageChanging);
  eventBus.on('scalechanging', webViewerScaleChanging);
  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('pagenumberchanged', webViewerPageNumberChanged);
  eventBus.on('scalechanged', webViewerScaleChanged);
  eventBus.on('rotatecw', webViewerRotateCw);
  eventBus.on('rotateccw', webViewerRotateCcw);
  eventBus.on('documentproperties', webViewerDocumentProperties);
  eventBus.on('find', webViewerFind);
  eventBus.on('findfromurlhash', webViewerFindFromUrlHash);
  eventBus.on('fileinputchange', webViewerFileInputChange);
 },
 bindWindowEvents: function pdfViewBindWindowEvents() {
  var eventBus = this.eventBus;
  window.addEventListener('wheel', webViewerWheel);
  window.addEventListener('click', webViewerClick);
  window.addEventListener('keydown', webViewerKeyDown);
  window.addEventListener('resize', function windowResize() {
   eventBus.dispatch('resize');
  });
  window.addEventListener('hashchange', function windowHashChange() {
   eventBus.dispatch('hashchange', { hash: document.location.hash.substring(1) });
  });
  window.addEventListener('beforeprint', function windowBeforePrint() {
   eventBus.dispatch('beforeprint');
  });
  window.addEventListener('afterprint', function windowAfterPrint() {
   eventBus.dispatch('afterprint');
  });
  window.addEventListener('change', function windowChange(evt) {
   var files = evt.target.files;
   if (!files || files.length === 0) {
    return;
   }
   eventBus.dispatch('fileinputchange', { fileInput: evt.target });
  });
 }
};
var validateFileURL;
var HOSTED_VIEWER_ORIGINS = [
 'null',
 'http://mozilla.github.io',
 'https://mozilla.github.io'
];
validateFileURL = function validateFileURL(file) {
 try {
  var viewerOrigin = new URL(window.location.href).origin || 'null';
  if (HOSTED_VIEWER_ORIGINS.indexOf(viewerOrigin) >= 0) {
   return;
  }
  var fileOrigin = new URL(file, window.location.href).origin;
  if (fileOrigin !== viewerOrigin) {
   throw new Error('file origin does not match viewer\'s');
  }
 } catch (e) {
  var message = e && e.message;
  var loadingErrorMessage = mozL10n.get('loading_error', null, 'An error occurred while loading the PDF.');
  var moreInfo = { message: message };
  PDFViewerApplication.error(loadingErrorMessage, moreInfo);
  throw e;
 }
};
function loadAndEnablePDFBug(enabledTabs) {
 return new Promise(function (resolve, reject) {
  var appConfig = PDFViewerApplication.appConfig;
  var script = document.createElement('script');
  script.src = appConfig.debuggerScriptPath;
  script.onload = function () {
   PDFBug.enable(enabledTabs);
   PDFBug.init(pdfjsLib, appConfig.mainContainer);
   resolve();
  };
  script.onerror = function () {
   reject(new Error('Cannot load debugger at ' + script.src));
  };
  (document.getElementsByTagName('head')[0] || document.body).appendChild(script);
 });
}
function webViewerInitialized() {
 var appConfig = PDFViewerApplication.appConfig;
 var file;
 var queryString = document.location.search.substring(1);
 var params = parseQueryString(queryString);
 file = 'file' in params ? params.file : appConfig.defaultUrl;
 validateFileURL(file);
 var waitForBeforeOpening = [];
 var fileInput = document.createElement('input');
 fileInput.id = appConfig.openFileInputName;
 fileInput.className = 'fileInput';
 fileInput.setAttribute('type', 'file');
 fileInput.oncontextmenu = noContextMenuHandler;
 document.body.appendChild(fileInput);
 if (!window.File || !window.FileReader || !window.FileList || !window.Blob) {
  appConfig.toolbar.openFile.setAttribute('hidden', 'true');
  appConfig.secondaryToolbar.openFileButton.setAttribute('hidden', 'true');
 } else {
  fileInput.value = null;
 }
 var PDFJS = pdfjsLib.PDFJS;
 if (PDFViewerApplication.viewerPrefs['pdfBugEnabled']) {
  var hash = document.location.hash.substring(1);
  var hashParams = parseQueryString(hash);
  if ('disableworker' in hashParams) {
   PDFJS.disableWorker = hashParams['disableworker'] === 'true';
  }
  if ('disablerange' in hashParams) {
   PDFJS.disableRange = hashParams['disablerange'] === 'true';
  }
  if ('disablestream' in hashParams) {
   PDFJS.disableStream = hashParams['disablestream'] === 'true';
  }
  if ('disableautofetch' in hashParams) {
   PDFJS.disableAutoFetch = hashParams['disableautofetch'] === 'true';
  }
  if ('disablefontface' in hashParams) {
   PDFJS.disableFontFace = hashParams['disablefontface'] === 'true';
  }
  if ('disablehistory' in hashParams) {
   PDFJS.disableHistory = hashParams['disablehistory'] === 'true';
  }
  if ('webgl' in hashParams) {
   PDFJS.disableWebGL = hashParams['webgl'] !== 'true';
  }
  if ('useonlycsszoom' in hashParams) {
   PDFJS.useOnlyCssZoom = hashParams['useonlycsszoom'] === 'true';
  }
  if ('verbosity' in hashParams) {
   PDFJS.verbosity = hashParams['verbosity'] | 0;
  }
  if ('ignorecurrentpositiononzoom' in hashParams) {
   PDFJS.ignoreCurrentPositionOnZoom = hashParams['ignorecurrentpositiononzoom'] === 'true';
  }
  if ('locale' in hashParams) {
   PDFJS.locale = hashParams['locale'];
  }
  if ('textlayer' in hashParams) {
   switch (hashParams['textlayer']) {
   case 'off':
    PDFJS.disableTextLayer = true;
    break;
   case 'visible':
   case 'shadow':
   case 'hover':
    var viewer = appConfig.viewerContainer;
    viewer.classList.add('textLayer-' + hashParams['textlayer']);
    break;
   }
  }
  if ('pdfbug' in hashParams) {
   PDFJS.pdfBug = true;
   var pdfBug = hashParams['pdfbug'];
   var enabled = pdfBug.split(',');
   waitForBeforeOpening.push(loadAndEnablePDFBug(enabled));
  }
 }
 mozL10n.setLanguage(PDFJS.locale);
 if (!PDFViewerApplication.supportsPrinting) {
  appConfig.toolbar.print.classList.add('hidden');
  appConfig.secondaryToolbar.printButton.classList.add('hidden');
 }
 if (!PDFViewerApplication.supportsFullscreen) {
  appConfig.toolbar.presentationModeButton.classList.add('hidden');
  appConfig.secondaryToolbar.presentationModeButton.classList.add('hidden');
 }
 if (PDFViewerApplication.supportsIntegratedFind) {
  appConfig.toolbar.viewFind.classList.add('hidden');
 }
 appConfig.sidebar.mainContainer.addEventListener('transitionend', function (e) {
  if (e.target === this) {
   PDFViewerApplication.eventBus.dispatch('resize');
  }
 }, true);
 appConfig.sidebar.toggleButton.addEventListener('click', function () {
  PDFViewerApplication.pdfSidebar.toggle();
 });
 Promise.all(waitForBeforeOpening).then(function () {
  webViewerOpenFileViaURL(file);
 }).catch(function (reason) {
  PDFViewerApplication.error(mozL10n.get('loading_error', null, 'An error occurred while opening.'), reason);
 });
}
var webViewerOpenFileViaURL;
webViewerOpenFileViaURL = function webViewerOpenFileViaURL(file) {
 if (file && file.lastIndexOf('file:', 0) === 0) {
  PDFViewerApplication.setTitleUsingUrl(file);
  var xhr = new XMLHttpRequest();
  xhr.onload = function () {
   PDFViewerApplication.open(new Uint8Array(xhr.response));
  };
  try {
   xhr.open('GET', file);
   xhr.responseType = 'arraybuffer';
   xhr.send();
  } catch (e) {
   PDFViewerApplication.error(mozL10n.get('loading_error', null, 'An error occurred while loading the PDF.'), e);
  }
  return;
 }
 if (file) {
  PDFViewerApplication.open(file);
 }
};
function webViewerPageRendered(e) {
 var pageNumber = e.pageNumber;
 var pageIndex = pageNumber - 1;
 var pageView = PDFViewerApplication.pdfViewer.getPageView(pageIndex);
 if (pageNumber === PDFViewerApplication.page) {
  PDFViewerApplication.toolbar.updateLoadingIndicatorState(false);
 }
 if (!pageView) {
  return;
 }
 if (PDFViewerApplication.pdfSidebar.isThumbnailViewVisible) {
  var thumbnailView = PDFViewerApplication.pdfThumbnailViewer.getThumbnail(pageIndex);
  thumbnailView.setImage(pageView);
 }
 if (pdfjsLib.PDFJS.pdfBug && Stats.enabled && pageView.stats) {
  Stats.add(pageNumber, pageView.stats);
 }
 if (pageView.error) {
  PDFViewerApplication.error(mozL10n.get('rendering_error', null, 'An error occurred while rendering the page.'), pageView.error);
 }
}
function webViewerTextLayerRendered(e) {
}
function webViewerPageMode(e) {
 var mode = e.mode, view;
 switch (mode) {
 case 'thumbs':
  view = SidebarView.THUMBS;
  break;
 case 'bookmarks':
 case 'outline':
  view = SidebarView.OUTLINE;
  break;
 case 'attachments':
  view = SidebarView.ATTACHMENTS;
  break;
 case 'none':
  view = SidebarView.NONE;
  break;
 default:
  console.error('Invalid "pagemode" hash parameter: ' + mode);
  return;
 }
 PDFViewerApplication.pdfSidebar.switchView(view, true);
}
function webViewerNamedAction(e) {
 var action = e.action;
 switch (action) {
 case 'GoToPage':
  PDFViewerApplication.appConfig.toolbar.pageNumber.select();
  break;
 case 'Find':
  if (!PDFViewerApplication.supportsIntegratedFind) {
   PDFViewerApplication.findBar.toggle();
  }
  break;
 }
}
function webViewerPresentationModeChanged(e) {
 var active = e.active;
 var switchInProgress = e.switchInProgress;
 PDFViewerApplication.pdfViewer.presentationModeState = switchInProgress ? PresentationModeState.CHANGING : active ? PresentationModeState.FULLSCREEN : PresentationModeState.NORMAL;
}
function webViewerSidebarViewChanged(e) {
 PDFViewerApplication.pdfRenderingQueue.isThumbnailViewEnabled = PDFViewerApplication.pdfSidebar.isThumbnailViewVisible;
 var store = PDFViewerApplication.store;
 if (!store || !PDFViewerApplication.isInitialViewSet) {
  return;
 }
 store.initializedPromise.then(function () {
  store.set('sidebarView', e.view).catch(function () {
  });
 });
}
function webViewerUpdateViewarea(e) {
 var location = e.location, store = PDFViewerApplication.store;
 if (store) {
  store.initializedPromise.then(function () {
   store.setMultiple({
    'exists': true,
    'page': location.pageNumber,
    'zoom': location.scale,
    'scrollLeft': location.left,
    'scrollTop': location.top
   }).catch(function () {
   });
  });
 }
 var href = PDFViewerApplication.pdfLinkService.getAnchorUrl(location.pdfOpenParams);
 PDFViewerApplication.appConfig.toolbar.viewBookmark.href = href;
 PDFViewerApplication.appConfig.secondaryToolbar.viewBookmarkButton.href = href;
 PDFViewerApplication.pdfHistory.updateCurrentBookmark(location.pdfOpenParams, location.pageNumber);
 var currentPage = PDFViewerApplication.pdfViewer.getPageView(PDFViewerApplication.page - 1);
 var loading = currentPage.renderingState !== RenderingStates.FINISHED;
 PDFViewerApplication.toolbar.updateLoadingIndicatorState(loading);
}
function webViewerResize() {
 var currentScaleValue = PDFViewerApplication.pdfViewer.currentScaleValue;
 if (currentScaleValue === 'auto' || currentScaleValue === 'page-fit' || currentScaleValue === 'page-width') {
  PDFViewerApplication.pdfViewer.currentScaleValue = currentScaleValue;
 } else if (!currentScaleValue) {
  PDFViewerApplication.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
 }
 PDFViewerApplication.pdfViewer.update();
}
function webViewerHashchange(e) {
 if (PDFViewerApplication.pdfHistory.isHashChangeUnlocked) {
  var hash = e.hash;
  if (!hash) {
   return;
  }
  if (!PDFViewerApplication.isInitialViewSet) {
   PDFViewerApplication.initialBookmark = hash;
  } else {
   PDFViewerApplication.pdfLinkService.setHash(hash);
  }
 }
}
var webViewerFileInputChange;
webViewerFileInputChange = function webViewerFileInputChange(e) {
 var file = e.fileInput.files[0];
 if (!pdfjsLib.PDFJS.disableCreateObjectURL && typeof URL !== 'undefined' && URL.createObjectURL) {
  PDFViewerApplication.open(URL.createObjectURL(file));
 } else {
  var fileReader = new FileReader();
  fileReader.onload = function webViewerChangeFileReaderOnload(evt) {
   var buffer = evt.target.result;
   var uint8Array = new Uint8Array(buffer);
   PDFViewerApplication.open(uint8Array);
  };
  fileReader.readAsArrayBuffer(file);
 }
 PDFViewerApplication.setTitleUsingUrl(file.name);
 var appConfig = PDFViewerApplication.appConfig;
 appConfig.toolbar.viewBookmark.setAttribute('hidden', 'true');
 appConfig.secondaryToolbar.viewBookmarkButton.setAttribute('hidden', 'true');
 appConfig.toolbar.download.setAttribute('hidden', 'true');
 appConfig.secondaryToolbar.downloadButton.setAttribute('hidden', 'true');
};
function webViewerPresentationMode() {
 PDFViewerApplication.requestPresentationMode();
}
function webViewerOpenFile() {
 var openFileInputName = PDFViewerApplication.appConfig.openFileInputName;
 document.getElementById(openFileInputName).click();
}
function webViewerPrint() {
 window.print();
}
function webViewerDownload() {
 PDFViewerApplication.download();
}
function webViewerFirstPage() {
 if (PDFViewerApplication.pdfDocument) {
  PDFViewerApplication.page = 1;
 }
}
function webViewerLastPage() {
 if (PDFViewerApplication.pdfDocument) {
  PDFViewerApplication.page = PDFViewerApplication.pagesCount;
 }
}
function webViewerNextPage() {
 PDFViewerApplication.page++;
}
function webViewerPreviousPage() {
 PDFViewerApplication.page--;
}
function webViewerZoomIn() {
 PDFViewerApplication.zoomIn();
}
function webViewerZoomOut() {
 PDFViewerApplication.zoomOut();
}
function webViewerPageNumberChanged(e) {
 var pdfViewer = PDFViewerApplication.pdfViewer;
 pdfViewer.currentPageLabel = e.value;
 if (e.value !== pdfViewer.currentPageNumber.toString() && e.value !== pdfViewer.currentPageLabel) {
  PDFViewerApplication.toolbar.setPageNumber(pdfViewer.currentPageNumber, pdfViewer.currentPageLabel);
 }
}
function webViewerScaleChanged(e) {
 PDFViewerApplication.pdfViewer.currentScaleValue = e.value;
}
function webViewerRotateCw() {
 PDFViewerApplication.rotatePages(90);
}
function webViewerRotateCcw() {
 PDFViewerApplication.rotatePages(-90);
}
function webViewerDocumentProperties() {
 PDFViewerApplication.pdfDocumentProperties.open();
}
function webViewerFind(e) {
 PDFViewerApplication.findController.executeCommand('find' + e.type, {
  query: e.query,
  phraseSearch: e.phraseSearch,
  caseSensitive: e.caseSensitive,
  highlightAll: e.highlightAll,
  findPrevious: e.findPrevious
 });
}
function webViewerFindFromUrlHash(e) {
 PDFViewerApplication.findController.executeCommand('find', {
  query: e.query,
  phraseSearch: e.phraseSearch,
  caseSensitive: false,
  highlightAll: true,
  findPrevious: false
 });
}
function webViewerScaleChanging(e) {
 PDFViewerApplication.toolbar.setPageScale(e.presetValue, e.scale);
 PDFViewerApplication.pdfViewer.update();
}
function webViewerPageChanging(e) {
 var page = e.pageNumber;
 PDFViewerApplication.toolbar.setPageNumber(page, e.pageLabel || null);
 PDFViewerApplication.secondaryToolbar.setPageNumber(page);
 if (PDFViewerApplication.pdfSidebar.isThumbnailViewVisible) {
  PDFViewerApplication.pdfThumbnailViewer.scrollThumbnailIntoView(page);
 }
 if (pdfjsLib.PDFJS.pdfBug && Stats.enabled) {
  var pageView = PDFViewerApplication.pdfViewer.getPageView(page - 1);
  if (pageView.stats) {
   Stats.add(page, pageView.stats);
  }
 }
}
var zoomDisabled = false, zoomDisabledTimeout;
function webViewerWheel(evt) {
 var pdfViewer = PDFViewerApplication.pdfViewer;
 if (pdfViewer.isInPresentationMode) {
  return;
 }
 if (evt.ctrlKey || evt.metaKey) {
  var support = PDFViewerApplication.supportedMouseWheelZoomModifierKeys;
  if (evt.ctrlKey && !support.ctrlKey || evt.metaKey && !support.metaKey) {
   return;
  }
  evt.preventDefault();
  if (zoomDisabled) {
   return;
  }
  var previousScale = pdfViewer.currentScale;
  var delta = normalizeWheelEventDelta(evt);
  var MOUSE_WHEEL_DELTA_PER_PAGE_SCALE = 3.0;
  var ticks = delta * MOUSE_WHEEL_DELTA_PER_PAGE_SCALE;
  if (ticks < 0) {
   PDFViewerApplication.zoomOut(-ticks);
  } else {
   PDFViewerApplication.zoomIn(ticks);
  }
  var currentScale = pdfViewer.currentScale;
  if (previousScale !== currentScale) {
   var scaleCorrectionFactor = currentScale / previousScale - 1;
   var rect = pdfViewer.container.getBoundingClientRect();
   var dx = evt.clientX - rect.left;
   var dy = evt.clientY - rect.top;
   pdfViewer.container.scrollLeft += dx * scaleCorrectionFactor;
   pdfViewer.container.scrollTop += dy * scaleCorrectionFactor;
  }
 } else {
  zoomDisabled = true;
  clearTimeout(zoomDisabledTimeout);
  zoomDisabledTimeout = setTimeout(function () {
   zoomDisabled = false;
  }, 1000);
 }
}
function webViewerClick(evt) {
 if (!PDFViewerApplication.secondaryToolbar.isOpen) {
  return;
 }
 var appConfig = PDFViewerApplication.appConfig;
 if (PDFViewerApplication.pdfViewer.containsElement(evt.target) || appConfig.toolbar.container.contains(evt.target) && evt.target !== appConfig.secondaryToolbar.toggleButton) {
  PDFViewerApplication.secondaryToolbar.close();
 }
}
function webViewerKeyDown(evt) {
 if (OverlayManager.active) {
  return;
 }
 var handled = false, ensureViewerFocused = false;
 var cmd = (evt.ctrlKey ? 1 : 0) | (evt.altKey ? 2 : 0) | (evt.shiftKey ? 4 : 0) | (evt.metaKey ? 8 : 0);
 var pdfViewer = PDFViewerApplication.pdfViewer;
 var isViewerInPresentationMode = pdfViewer && pdfViewer.isInPresentationMode;
 if (cmd === 1 || cmd === 8 || cmd === 5 || cmd === 12) {
  switch (evt.keyCode) {
  case 70:
   if (!PDFViewerApplication.supportsIntegratedFind) {
    PDFViewerApplication.findBar.open();
    handled = true;
   }
   break;
  case 71:
   if (!PDFViewerApplication.supportsIntegratedFind) {
    var findState = PDFViewerApplication.findController.state;
    if (findState) {
     PDFViewerApplication.findController.executeCommand('findagain', {
      query: findState.query,
      phraseSearch: findState.phraseSearch,
      caseSensitive: findState.caseSensitive,
      highlightAll: findState.highlightAll,
      findPrevious: cmd === 5 || cmd === 12
     });
    }
    handled = true;
   }
   break;
  case 61:
  case 107:
  case 187:
  case 171:
   if (!isViewerInPresentationMode) {
    PDFViewerApplication.zoomIn();
   }
   handled = true;
   break;
  case 173:
  case 109:
  case 189:
   if (!isViewerInPresentationMode) {
    PDFViewerApplication.zoomOut();
   }
   handled = true;
   break;
  case 48:
  case 96:
   if (!isViewerInPresentationMode) {
    setTimeout(function () {
     pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
    });
    handled = false;
   }
   break;
  case 38:
   if (isViewerInPresentationMode || PDFViewerApplication.page > 1) {
    PDFViewerApplication.page = 1;
    handled = true;
    ensureViewerFocused = true;
   }
   break;
  case 40:
   if (isViewerInPresentationMode || PDFViewerApplication.page < PDFViewerApplication.pagesCount) {
    PDFViewerApplication.page = PDFViewerApplication.pagesCount;
    handled = true;
    ensureViewerFocused = true;
   }
   break;
  }
 }
 if (cmd === 1 || cmd === 8) {
  switch (evt.keyCode) {
  case 83:
   PDFViewerApplication.download();
   handled = true;
   break;
  }
 }
 if (cmd === 3 || cmd === 10) {
  switch (evt.keyCode) {
  case 80:
   PDFViewerApplication.requestPresentationMode();
   handled = true;
   break;
  case 71:
   PDFViewerApplication.appConfig.toolbar.pageNumber.select();
   handled = true;
   break;
  }
 }
 if (handled) {
  if (ensureViewerFocused && !isViewerInPresentationMode) {
   pdfViewer.focus();
  }
  evt.preventDefault();
  return;
 }
 var curElement = document.activeElement || document.querySelector(':focus');
 var curElementTagName = curElement && curElement.tagName.toUpperCase();
 if (curElementTagName === 'INPUT' || curElementTagName === 'TEXTAREA' || curElementTagName === 'SELECT') {
  if (evt.keyCode !== 27) {
   return;
  }
 }
 if (cmd === 0) {
  switch (evt.keyCode) {
  case 38:
  case 33:
  case 8:
   if (!isViewerInPresentationMode && pdfViewer.currentScaleValue !== 'page-fit') {
    break;
   }
  case 37:
   if (pdfViewer.isHorizontalScrollbarEnabled) {
    break;
   }
  case 75:
  case 80:
   if (PDFViewerApplication.page > 1) {
    PDFViewerApplication.page--;
   }
   handled = true;
   break;
  case 27:
   if (PDFViewerApplication.secondaryToolbar.isOpen) {
    PDFViewerApplication.secondaryToolbar.close();
    handled = true;
   }
   if (!PDFViewerApplication.supportsIntegratedFind && PDFViewerApplication.findBar.opened) {
    PDFViewerApplication.findBar.close();
    handled = true;
   }
   break;
  case 40:
  case 34:
  case 32:
   if (!isViewerInPresentationMode && pdfViewer.currentScaleValue !== 'page-fit') {
    break;
   }
  case 39:
   if (pdfViewer.isHorizontalScrollbarEnabled) {
    break;
   }
  case 74:
  case 78:
   if (PDFViewerApplication.page < PDFViewerApplication.pagesCount) {
    PDFViewerApplication.page++;
   }
   handled = true;
   break;
  case 36:
   if (isViewerInPresentationMode || PDFViewerApplication.page > 1) {
    PDFViewerApplication.page = 1;
    handled = true;
    ensureViewerFocused = true;
   }
   break;
  case 35:
   if (isViewerInPresentationMode || PDFViewerApplication.page < PDFViewerApplication.pagesCount) {
    PDFViewerApplication.page = PDFViewerApplication.pagesCount;
    handled = true;
    ensureViewerFocused = true;
   }
   break;
  case 72:
   if (!isViewerInPresentationMode) {
    PDFViewerApplication.handTool.toggle();
   }
   break;
  case 82:
   PDFViewerApplication.rotatePages(90);
   break;
  }
 }
 if (cmd === 4) {
  switch (evt.keyCode) {
  case 32:
   if (!isViewerInPresentationMode && pdfViewer.currentScaleValue !== 'page-fit') {
    break;
   }
   if (PDFViewerApplication.page > 1) {
    PDFViewerApplication.page--;
   }
   handled = true;
   break;
  case 82:
   PDFViewerApplication.rotatePages(-90);
   break;
  }
 }
 if (!handled && !isViewerInPresentationMode) {
  if (evt.keyCode >= 33 && evt.keyCode <= 40 || evt.keyCode === 32 && curElementTagName !== 'BUTTON') {
   ensureViewerFocused = true;
  }
 }
 if (cmd === 2) {
  switch (evt.keyCode) {
  case 37:
   if (isViewerInPresentationMode) {
    PDFViewerApplication.pdfHistory.back();
    handled = true;
   }
   break;
  case 39:
   if (isViewerInPresentationMode) {
    PDFViewerApplication.pdfHistory.forward();
    handled = true;
   }
   break;
  }
 }
 if (ensureViewerFocused && !pdfViewer.containsElement(curElement)) {
  pdfViewer.focus();
 }
 if (handled) {
  evt.preventDefault();
 }
}
localized.then(function webViewerLocalized() {
 document.getElementsByTagName('html')[0].dir = mozL10n.getDirection();
});
var PDFPrintServiceFactory = {
 instance: {
  supportsPrinting: false,
  createPrintService: function () {
   throw new Error('Not implemented: createPrintService');
  }
 }
};
exports.PDFViewerApplication = PDFViewerApplication;
exports.DefaultExernalServices = DefaultExernalServices;
exports.PDFPrintServiceFactory = PDFPrintServiceFactory;