PDFTron WebViewer Namespace: Core

WebViewer Instance Core namespace. The namespace containing WebViewer's core user controls, including DocumentViewer control and the Document class.

Example

webViewerInstance.Core.someProperty
webViewerInstance.Core.someAPI()

Classes

AnnotationHistoryManager
AnnotationManager
Bookmark
DisplayMode
DisplayModeManager
Document
DocumentViewer
EditBoxManager
EventHandler
FormFieldCreationManager
WebViewerServerAnnotationManager

Namespaces

Actions
Annotations
Math
PartRetrievers
PDFNet
Search
Tools

Members

<static> annotationManager

AnnotationManager instance

See:

Core.AnnotationManager

Example

WebViewer(...)
  .then(function(instance) {
    const annotationManager = instance.Core.annotationManager;
  });

<static> DisplayModes

Display modes that control how the document's page are displayed

Properties:

Name	Type	Description
`Single`	string	Displays one page at a time.
`Continuous`	string	Displays all the pages in a scrolling view in one column.
`Facing`	string	Displays up to two pages at a time, side by side.
`FacingContinuous`	string	Displays all pages in a scrolling view in two columns.
`Cover`	string	Displays all pages in a scrolling view in two columns. The first row has a single page in the second column.
`CoverFacing`	string	Same as the Cover display mode except that it is not a scrolling view.
`Custom`	string	Any custom display mode.

<static> documentViewer

DocumentViewer instance

See:

Core.DocumentViewer

Example

WebViewer(...)
  .then(function(instance) {
    const documentViewer = instance.Core.documentViewer;
  });

<static> FONT_STYLES

Represents the font style for the watermark text

Properties:

Name	Type	Description
`BOLD`	string	specifies that the text should be bolded
`ITALIC`	string	specifies that the text should be italicized
`UNDERLINE`	string	specifies that the text should be underlined

<static> getLegacyOfficeWorkerPath

Get the location of the Legacy Office worker (WebB2XOfficeWorker).

<static> getOfficeWorkerPath

Get the location of the Office worker.

<static> MarkedStates

Represents the different Marked state values that you can apply to annotation status.

Properties:

Name	Type	Description
`Marked`	string	Marked State
`Unmarked`	string	Unmarked State

<static> PageRotation

Represents the different page rotation values that you can apply to pages.

Properties:

Name	Type	Description
`E_0`	number	0 degree rotation
`E_90`	number	90 degree rotation
`E_180`	number	180 degree rotation
`E_270`	number	270 degree rotation

<static> ReviewStates

Represents the different review state values that you can apply to annotation status.

Properties:

Name	Type	Description
`Accepted`	string	Accepted State
`Rejected`	string	Rejected State
`Cancelled`	string	Cancelled State
`Completed`	string	Completed State
`None`	string	None State

<static> SaveOptions

Represents the different save option values that you can use in the getFileData function.

Properties:

Name	Type	Description
`INCREMENTAL`	number	Saves new data to the end of the file
`REMOVE_UNUSED`	number	Removes unused data when saving
`HEX_STRINGS`	number	Save strings in hexadecimal format
`OMIT_XREF`	number	Do not save cross reference table
`LINEARIZED`	number	Optimize data for speed and remove unused data
`COMPATIBILITY`	number	Maximize compatibility with older PDF consumers (e.g. the file will not use object and compressed XREF streams)

<static> setLegacyOfficeWorkerPath

Set the location of the Legacy Office worker (WebB2XOfficeWorker). This will override the location specified by Core.setWorkerPath for Legacy Office worker files.

<static> setOfficeWorkerPath

Set the location of the Office worker. This will override the location specified by Core.setWorkerPath for Office worker files.

<static> StateModel

Represents the different state models that you can apply to annotation.

Properties:

Name	Type	Description
`Marked`	string	Marked State
`Review`	string	Review State

<static> SupportedFileFormats

Represents all the supported file formats in WebViewer

Properties:

Name	Type	Description
`CLIENT`	Array.<string>	Supported file formats when using WebViewer client side rendering
`SERVER`	Array.<string>	Supported file formats when using WebViewer with WebViewer Server

Methods

<static> BaseDocument()

BaseDocument is used to alert if a Document implementation is not following the Document interface.

<static> createDocument(source [, options])

Creates an initialized Core.Document instance.

Parameters:

Name Type Argument Description

source string | File | ArrayBuffer | Blob | Core.PDFNet.PDFDoc Source parameter, path/url to document or File.

options

object

An object that can contain the following optional parameters.

Properties

Name Type Argument Description

l string <optional> The license key for viewing PDF or Office files (PDF/Office only). You only need to use one of 'l' or 'licenseKey'.

licenseKey string <optional> The license key for viewing PDF or Office files (PDF/Office only). You only need to use one of 'l' or 'licenseKey'.

docId string <optional> An unique identifier for the document, used for offline mode.

onLoadingProgress function <optional> A callback function for loading progress, function signature function(percent) {}.

onError function <optional> A callback function that will be called when error occurs in the process of creating a document. function signature function(e) {}

workerTransportPromise Promise.<any> <optional> The workerTransportPromise that should be used to load the document.

password string | function <optional> A password string or a function of the form function(callback) where callback is of the form function(password). This 'password' function will be called when a password is required to load a PDF document and should call the callback with the retrieved password.

filename string <optional> A filename that is used for the downloaded file, and for determining the extension when options.extension isn't used.

extension string <optional> Used for specifying the extension of the document to be loaded. This is necessary if the URL/path does not contain the file extension or if you're loading a Blob/File.

customHeaders object <optional> An object containing custom HTTP headers to use when retrieving the document from the specified url. For example: {'Authorization' : 'Basic dXNlcm5hbWU6cGFzc3dvcmQ='}.

useDownloader boolean <optional> A boolean indicating whether Downloader should be used on urls (PDF only). https://www.pdftron.com/documentation/web/guides/usedownloader-option/.

withCredentials boolean <optional> Whether to set the withCredentials property on the XMLHttpRequest.

pageSizes Array.<object> <optional> An array of objects in the shape of { width: number, height: number }. Used to determine the page sizes when loading an image file.

backendType string <optional> A string representing the "backend type" for rendering PDF documents. Pass "asm" to foce the use of the ASM.js worker, "ems" to force the use of the WebAssembly worker (or ASM.js on non-wasm browsers) or "wasm-threads" to use threaded WebAssembly.

xodOptions

object

An object that contains the options for a XOD document.

Properties

Name	Type	Argument	Description
`decrypt`	boolean	<optional>	Function to be called to decrypt a part of the XOD file. For default XOD AES encryption pass Core.Encryption.decrypt.
`decryptOptions`	boolean	<optional>	An object with options for the decryption e.g. {p: "pass", type: "aes"} where is p is the password.
`streaming`	boolean	<optional>	A boolean indicating whether to use http or streaming PartRetriever, it is recommended to keep streaming false for better performance. https://www.pdftron.com/documentation/web/guides/streaming-option.
`azureWorkaround`	boolean	<optional>	Whether or not to workaround the issue of Azure not accepting range requests of a certain type. Enabling the workaround will add an extra HTTP request of overhead but will still allow documents to be loaded from other locations.
`startOffline`	boolean	<optional>	Whether to start loading the document in offline mode or not. This can be set to true if the document had previously been saved to an offline database using WebViewer APIs. You'll need to use this option to load from a completely offline state.

webviewerServerURL string <optional> A URL to the WebViewer server drop-in backend https://www.pdftron.com/documentation/web/guides/wv-server-deployment.

fallbackToClientSide boolean <optional> A boolean indicating whether to fall back to client side rendering when WebViewer server fails

cacheKey string <optional> A key that will be used for caching the document on WebViewer Server.

forceClientSideInit boolean <optional> If set to true then when loading a document using WebViewer Server the document will always switch to client only rendering allowing page manipulation and the full API to be used.

loadAsPDF boolean <optional> If set to true then this will convert any office file passed in into a PDF document

type string <optional> A custom document type. If set then the document type is not determined from the file extension.

officeOptions

object

An object that contains the options for an Office document

Properties

Name	Type	Argument	Description
`autoFillMap`	object	<optional>	A map of template key-value pairs

Returns:

Promise that resolves when doc.loadAsync has been successfully called and returns Core.Document instance.

Type: Promise.<Core.Document>

<static> disableEmbeddedJavaScript()

Disables the execution of embedded JavaScript

<static> disableFullPDF()

Disable the use of the full version of the PDFNetJS if it had been previously enabled.

<static> disableLogs(disabled)

Enables or disables all logs coming from WebViewer.

Parameters:

Name	Type	Description
`disabled`	boolean	Whether or not to disable all WebViewer logs. Defaults to true

<static> dispose()

Cleans up listeners and data from the WebViewer instance. Should be called when removing the WebViewer instance from the DOM.

Example

webViewerInstance.Core.dispose()

<static> enableFullPDF()

Enable or disable use of the full version of PDFNetJS. the parameter is deprecated since version 8.0

<static> forceBackendType(backendType)

Set default backend type. This method can be used for forced backend type for specific workers, for example, "ems" for Emscripten worker type

Parameters:

Name	Type	Description
`backendType`	string	value for default backend type, e.g. asm, ems, wasm-threads, jsworker.

<static> getBuild()

Returns the specific hashed commit id that is used to build the current WebViewer version.

Returns:

A hashed commit id

Type: string

<static> getCurrentOfficeBackendType()

Gets the current backend type being used.

Returns:

Returns "asm" if ASM.js is being forced, "ems" if Emscripten is being used, "wasm-threads" if threaded Wasm is being used and undefined if nothing is being used yet

Type: string

<static> getCurrentPDFBackendType()

Gets the current backend type loaded or being loaded

Returns:

Returns "asm" if ASM.js is being forced, "ems" if Emscripten is being used or "wasm-threads" if threaded Wasm is being used

Type: Promise.<string>

<static> getCurrentPDFBackendType()

Gets the current backend type being used.

Returns:

Returns "asm" if ASM.js is being forced, "ems" if Emscripten is being used, "wasm-threads" if threaded Wasm is being used and undefined if nothing is being used yet

Type: string

<static> getDefaultBackendType()

Gets the default pdf backend type that should be used for this browser.

Returns:

Returns a promise that resolve to a string. "ems" if Emscripten should be used, and "wasm-threads" if threaded Wasm should be used

Type: Promise.<string>

<static> getExternalPath()

Get the location of external scripts.

Returns:

the prefix url external scripts.

Type: string

<static> getHashParam(property, defaultValue)

Gets the value of the specified hash parameter from the window URL

Parameters:

Name	Type	Description
`property`	string	The property key from hash parameter
`defaultValue`	T	Default return value

Returns:

A value of the hash parameter

Type: T

<static> getLegacyOfficeAsmPath()

Get the location of the LegacyOffice asm worker.

Returns:

the prefix url for WebB2XOfficeWorker.br.js.mem.

Type: string

<static> getLegacyOfficeResourcePath()

Get the location of the Legacy Office resource worker.

Returns:

the prefix url for WebB2XOfficeWorker.js

Type: string

<static> getLocalWorkerPath()

Get the location of the local worker files.

Returns:

the path to CORSWorker.js/CoreWorker.js

Type: string

<static> getOfficeAsmPath()

Get the location of the Office asm worker.

Returns:

the prefix url for WebOfficeWorker.br.js.mem.

Type: string

<static> getOfficeResourcePath()

Get the location of the Office worker.

Returns:

the prefix url for OfficeWorker.js

Type: string

<static> getPDFAsmPath()

Get the location of the PDF asm.js file PDFNetC.gz.js.

Returns:

the prefix url for PDFNetC.gz.js.

Type: string

<static> getPDFResourcePath()

Get the location of PDF resources.

Returns:

the prefix url for PDFNetC.js.mem and PDFNet.res.

Type: string

<static> getPDFWorkerPath()

Get the location of the PDF worker.

Returns:

the prefix url for PDFworker.js and ResizableWorker.js

Type: string

<static> getResourcesPath()

Gets the path to the resources folder

Returns:

The path to the resources folder

Type: string

<static> getScrollLeft(ele)

Gets the scrollLeft value for the element. Takes into account right to left scrolling direction if applicable.

Parameters:

Name	Type	Description
`ele`	Element	An HTML element to retrieve the scrollLeft value from

Returns:

The scrollLeft value of the element

Type: number

<static> getVersion()

Returns the WebViewer version.

Returns:

WebViewer version

Type: string

<static> getWorkerPath()

Gets the path to the Web Worker JavaScript file

Returns:

The path to the worker

Type: string

<static> initLegacyOfficeWorkerTransports(officeType, workerHandlers)

Begins setup of Legacy Office Worker Object.

Parameters:

Name	Type	Description
`officeType`	string	object representing an Office backend type ("ems" or "wasm-threads")
`workerHandlers`	object	object holding event and error handlers for the worker (workerLoadingProgress, emsWorkerError).

Returns:

a promise that will be resolved when worker transport initialization is complete.

<static> initOfficeWorkerTransports(officeType, workerHandlers, l)

Begins setup of Office Worker Object.

Parameters:

Name	Type	Description
`officeType`	string	object representing an Office backend type ("ems" or "wasm-threads")
`workerHandlers`	object	object holding event and error handlers for the worker (workerLoadingProgress, emsWorkerError).
`l`	string	The license key to use for this worker. If undefined, initialization will be done in demo mode.

Returns:

a promise that will be resolved when worker transport initialization is complete.

<static> initPDFWorkerTransports(pdfBackendType, workerHandlers, l)

Begins setup of PDF Worker Object.

Parameters:

Name	Type	Description
`pdfBackendType`	string	object representing an PDF backend type ("asm", "ems" or "wasm-threads")
`workerHandlers`	object	object holding event and error handlers for the worker (workerLoadingProgress, emsWorkerError).
`l`	string	The license key to use for this worker. If undefined PDFNet will be initialized in demo mode.

Returns:

a promise that will be resolved when worker transport initialization is complete.

<static> isBlendModeSupported(type)

Check if a composite operation is supported

Parameters:

Name	Type	Description
`type`	string	Composite operation to check

Returns:

True if if the input composite operation is supported, false otherwise

Type: boolean

<static> isDemoMode()

Returns whether demo mode is active or not. Must be called after the document is loaded or after the call to Core.initPDFWorkerTransports if you're calling it directly.

Returns:

true or false depending on whether the viewer is in demo mode or not

Type: boolean

<static> isFullPDFEnabled()

Returns whether the full version of PDFNetJS is enabled or not.

Returns:

returns true if the full version is enabled and false otherwise.

Type: boolean

<static> office2PDFBuffer(input, options)

Parameters:

Name Type Description

input string | ArrayBuffer Either a url from which to download the file or an ArrayBuffer containing the file data.

options

Object

An object containing conversion options

Properties

Name	Type	Argument	Description
`l`	string	<optional>	The license key with which to initialize the SDK
`extension`	string	<optional>	The extension of the input file. Should be passed in if the input doesn't specify the file extension.

Returns:

A promise that resolves to an ArrayBuffer containing the resulting PDF data.

Type: ArrayBuffer

<static> preloadLegacyOfficeWorker(officeBackendType, workerHandlers)

Begins setup of Legacy Office Worker Object. This can be used to load the workers before a license key has been loaded.

Parameters:

Name	Type	Description
`officeBackendType`	string	object representing an Office backend type ("ems" or "wasm-threads")
`workerHandlers`	object	object holding event and error handlers for the worker (workerLoadingProgress).

Returns:

The worker object

Type: object

<static> preloadOfficeWorker(officeBackendType, workerHandlers)

Begins setup of Office Worker Object. This can be used to load the workers before a license key has been loaded.

Parameters:

Name	Type	Description
`officeBackendType`	string	object representing an Office backend type ("asm", "ems" or "wasm-threads")
`workerHandlers`	object	object holding event and error handlers for the worker (workerLoadingProgress).

Returns:

The worker object

Type: object

<static> preloadPDFWorker(pdfBackendType, workerHandlers)

Begins setup of PDF Worker Object. This can be used to load the workers before a license key has been loaded.

Parameters:

Name	Type	Description
`pdfBackendType`	string	object representing a PDF backend type ("asm", "ems" or "wasm-threads")
`workerHandlers`	object	object holding event and error handlers for the worker (workerLoadingProgress).

Returns:

The worker object

Type: object

<static> resetLegacyOfficeWorker(worker)

Resets the worker so that the next time initLegacyOfficeWorkerTransports is called it will set up the worker transports with the specified worker.

Parameters:

Name	Type	Description
`worker`	object	The new worker to use the next time initLegacyOfficeWorkerTransports is called

<static> resetOfficeWorker(worker)

Resets the worker so that the next time initOfficeWorkerTransports is called it will set up the worker transports with the specified worker.

Parameters:

Name	Type	Description
`worker`	object	The new worker to use the next time initOfficeWorkerTransports is called

<static> resetWorker()

Resets the worker so that the next time initPDFWorkerTransports is called it will set up the worker transports.

<static> setAdvancedImageScaling(advanced)

Forces a higher level of accuracy in image downsampling at the expense of rendering performance. This function should be called before loading a document to ensure this setting is used.

Parameters:

Name	Type	Description
`advanced`	boolean	if true advanced image scaling will be used. Can alternatively pass a number for the number of downsampling steps to take. Passing true is equivalent to passing 1.4.

<static> setAsWindowsApp()

Flag WebViewer as running inside a Windows App so that it automatically uses the WinRTPartRetriever for loading local XOD files

<static> SetCachingLevel(level)

Set the caching level between 0 and 10, where 0 is no caching and 10 uses a very large cache

Parameters:

Name	Type	Description
`level`	number	The level to set

<static> setCanvasMultiplier(value)

Sets the default multiplier used for rendering pages with document.loadCanvasAsync. Higher multipliers mean that pages will be rendered at higher resolutions. The default value is the browser's devicePixelRatio

Parameters:

Name	Type	Description
`value`	number	The value of multiplier to be set

<static> setColorManagement( [boolean])

Enables or color management for PDFNetJS backend. Color management is off by default. Enabling color management will better reflect correct color conversions but has a performance penalty.

Parameters:

Name	Type	Argument	Description
`boolean`		<optional>	value if true enable color management. Otherwise disable it.

<static> setCustomFontURL(url)

Set the URL at which PDFNetJS backend will request font resources for the purposes of font substitution. By default they are retrieved from the pdftron website.

Parameters:

Name	Type	Description
`url`	string	The url at which font resources should be requested.

<static> setEmscriptenHeapSize(The)

Adjusts the up front heap size used by Emscripten. This method must be called before the worker is initialized to change heap allocation behaviour. By default the heap size is set to 50331648 bytes. Note that decreasing the heap size very low or running complex operations may require a resize.

Parameters:

Name	Type	Description
`The`	number	number of bytes to allocate for the Emscripten heap.

<static> setExternalPath()

Set the location of external scripts.

<static> setIsWindowsApp(isWindowsApp)

Sets whether WebViewer is running inside a Windows App and should automatically use the WinRTPartRetriever for loading local XOD files

Parameters:

Name	Type	Description
`isWindowsApp`	boolean	Whether WebViewer is running inside a Windows app or not

Deprecated:

since version 8.0 Please use setAsWindowsApp or unsetAsWindowsApp instead

<static> setLegacyOfficeAsmPath(workerPath)

Set the location of the LegacyOffice asm worker. This will override the location specified by Core.setWorkerPath for Office worker files.

Parameters:

Name	Type	Description
`workerPath`	string	the prefix url for WebB2XOfficeWorker.br.js.mem.

<static> setLegacyOfficeResourcePath(workerPath)

Set the location of the Legacy Office resource worker. This will override the location specified by Core.setWorkerPath for Legacy Office worker files This new legacyOfficeResourcePath will be used in very specific situations where worker files are located in different locations.

Parameters:

Name	Type	Description
`workerPath`	string	the prefix url for WebB2XOfficeWorker.js and .mem files

<static> setLocalWorkerPath(workerPath, isExact)

Sets the location of the local worker files CORSWorker.js/CoreWorker.js which will be different when setting the main worker path to another domain. Note that this path should be on the same domain as WebViewer is being loaded.

Parameters:

Name	Type	Description
`workerPath`	string	The path to the local worker files
`isExact`	boolean	By default this function will add a trailing slash if it wasn't added but in rare cases you may not want this behavior and can pass true for isExact

<static> setOfficeAsmPath(workerPath)

Set the location of the Office asm worker. This will override the location specified by Core.setWorkerPath for Office worker files.

Parameters:

Name	Type	Description
`workerPath`	string	the prefix url for WebOfficeWorker.br.js.mem.

<static> setOfficeResourcePath(workerPath)

Set the location of the Office resource worker. This will override the location specified by Core.setWorkerPath for Office worker files This new officeResourcePath will be used in very specific situations where worker files are located in different locations.

Parameters:

Name	Type	Description
`workerPath`	string	the prefix url for WebOfficeWorker.js and .mem files

<static> setPDFAsmPath(workerPath)

Set the location of the PDF worker. This will override the location specified by Core.setWorkerPath for PDF worker files.

Parameters:

Name	Type	Description
`workerPath`	string	the prefix url for PDFNetC.gz.js.

<static> setPDFResourcePath(resourcePath)

Set the location of PDF resources. This will override the location specified by Core.setWorkerPath for PDF resource files.

Parameters:

Name	Type	Description
`resourcePath`	string	the prefix url for PDFNetC.js.mem and PDFNet.res.

<static> setPDFWorkerPath(workerPath)

Set the location of the PDF worker. This will override the location specified by Core.setWorkerPath for PDF worker files.

Parameters:

Name	Type	Description
`workerPath`	string	the prefix url for PDFworker.js and ResizableWorker.js

<static> SetPreRenderLevel(level)

Set the pre-render level between 0 and 10, where 0 has pre-rendering and 10 has a lot of pre-rendering.

Parameters:

Name	Type	Description
`level`	number	The level to set

<static> setProgressiveTime(milliseconds)

Control the time between progressive events when rendering a more complex page.

Parameters:

Name	Type	Description
`milliseconds`	number	the number of milliseconds between progressive events. By default this is disabled for XOD and 3 seconds (3000) otherwise.

<static> setResourcesPath(path)

Sets the path to the resources folder.

Parameters:

Name	Type	Description
`path`	string	Path to the resources folder relative to the HTML file

<static> setWorkerPath(path)

Sets the path to the Web Worker JavaScript file. By default the file is expected to be in the same directory as the html file of the viewer and the path should be specified relative to the html file

Parameters:

Name	Type	Description
`path`	string	Path to the Web Worker JS file relative to the html file of the viewer

<static> unsetAsWindowsApp()

Unflag WebViewer as running inside a Windows App so that it doesn't automatically use the WinRTPartRetriever for loading local XOD files. This is unset by default.

<static> unsetCanvasMultiplier()

Unsets the multiplier that was set using the setCanvasMultiplier function. The multiplier will default back to the browser's devicePixelRatio