PDFJS Express WebViewer

Global

Methods

getInstance( [element])

Gets an already existing instance of WebViewer. If only one instance of WebViewer exists on the page, then 'element' is not required, and the function will return the instance of WebViewer. If more than one instance of WebViewer exists, you must pass in the DOM element containing the instance of WebViewer you want to retrieve. This function can be imported directly as a module as well.
Parameters:
Name Type Argument Description
element HTMLElement <optional>
 The DOM element containing the instance of WebViewer you want to retrieve
Returns:
Returns an instance of WebViewer. Returns null if no instances are available.
Type
WebViewerInstance
Example
import { getInstance } from '@pdftron/webviewer'

// After WebViewer has already been constructed
const instance = getInstance();

WebViewer(options, viewerElement)

A function that creates an instance of WebViewer, and embeds it on the HTML page
Parameters:
Name Type Description
options WebViewerOptions
viewerElement HTMLElement
Returns:
A promise resolved with WebViewer instance.
Type
Promise.<WebViewerInstance>
Example
WebViewer({
      licenseKey: 'Insert commercial license key here after purchase'
    }, document.getElementById('viewer'))
      .then(function(instance) {
        const documentViewer = instance.Core.documentViewer;
        const annotationManager = instance.Core.annotationManager;
        // call methods from instance, documentViewer and annotationManager as needed

        // you can also access major namespaces from the instances as follows:
        // const Tools = instance.Core.Tools;
        // const Annotations = instance.Core.Annotations;
      });

Type Definitions

LayerContext

Type:
  • object
Properties:
Name Type Description
obj string the unique identifier of the layer. This is not defined if the layer is a label
name string the name of the layer. It does not have not be unique
locked boolean boolean to denote if the layer is locked for viewing. This state cannot be toggled by the user through the user interface
visible boolean boolean to denote if the layer is visible
children Array.<LayerContext> the layer's children (if any). This is not defined if the layer is a label.

LeaderPoints

the point in viewer coordinates
Type:
  • Object
Properties:
Name Type Description
Start Core.Math.Point the start point
End Core.Math.Point the end point

onDateSelected(date)

Callback function for when a date is selected
Parameters:
Name Type Description
date string selected Date

PageManipulationSection

Type:
  • object
Properties:
Name Type Description
type string Required type of 'customPageOperation'
header string Header to be displayed in the UI for this section
dataElement string Unique dataElement
operations Array.<PageOperation> the operations that will be available under this section

PageOperation

Type:
  • object
Properties:
Name Type Description
title string Title to be displayed for the operation
img string path to imge to be used as an icon for the operation
onClick function onClick handler, which takes as a parameter an array of selected page numbers
dataElement string Unique dataElement for this operation

WebViewerOptions

Type:
  • Object
Properties:
Name Type Argument Default Description
path string Path to the WebViewer lib folder
annotationUser string <optional>
 Guest Name of the user for annotations
config string <optional>
 URL path to a custom JavaScript for customizations
css string <optional>
 URL path to a custom CSS file for customizations
disabledElements Array.<string> <optional>
 List of data-elements to be disabled in UI
accessibleMode boolean <optional>
 false Enable accessibility features. E.g tab page selection and page text in the DOM
enableAnnotations boolean <optional>
 true Enable annotations feature
enableFilePicker boolean <optional>
 false Enable file picker feature
enableMeasurement boolean <optional>
 false Enable measurement tools
enableRedaction boolean <optional>
 false Enable redaction tool
extension string <optional>
 Extension of the document to be loaded
filename string <optional>
 The name of the file that will be used when downloading the document. The extension in the filename will be used as the document type to be loaded (e.g. myfile.docx will treat the file as docx) if no extension option is passed.
initialDoc string <optional>
 URL path to a document to load on startup
isAdminUser boolean <optional>
 false Set user permission to admin
isReadOnly boolean <optional>
 false Set user permission to read-only
licenseKey string <optional>
 License key for viewing documents. If not set then WebViewer will be in demo mode.
ui string <optional>
 default Type of UI to be used. Accepts `default`|`beta`.
disableLogs boolean <optional>
 false Disables console logs coming from WebViewer, including the version and build numbers
disableFlattenedAnnotations boolean <optional>
 false Disables the flattened rendering of existing annotations in documents.
uiPath string <optional>
 Path to UI folder to use a different UI or customized UI. Default is'./ui/index.html'.
selectAnnotationOnCreation boolean <optional>
 false If true then newly added annotations will be selected automatically
highContrastMode boolean <optional>
 false If true then the UI will use high constrast colours to help with accessibility.