Class PdfUA2LinkChecker

java.lang.Object

com.itextpdf.pdfua.checkers.utils.ua2.PdfUA2LinkChecker

public final class PdfUA2LinkChecker
extends Object

Class that provides methods for checking PDF/UA-2 compliance of link annotations.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PdfUA2LinkChecker.PdfUA2LinkAnnotationHandler	Helper class that checks the conformance of link annotations while iterating the tag tree structure.

Field Summary

Fields

Modifier and Type	Field	Description
private final PdfUAValidationContext	context
private final Map<PdfObject, Set<IStructureNode>>	destinationToStructParentsMap
private final PdfDocument	pdfDoc

Constructor Summary

Constructors

Modifier	Constructor	Description
private	PdfUA2LinkChecker(PdfUAValidationContext context, PdfDocument pdfDoc)

Method Summary

Modifier and Type	Method	Description
static void	checkLinkAnnotations(PdfDocument document)	Verifies that each link annotation present in the document is tagged.
private void	checkLinkAnnotationStructureParent(IStructureNode elem)	Checks that link annotation is enclosed in either a Link or Reference structure element.
private void	checkStructDestinationsInLinkAndReference(PdfObjRef objRef)	Checks that link annotations that target different locations (destinations) are in separate Link or Reference structure elements, and multiple link annotations targeting the same location are included in a single Link or Reference structure element.
private PdfArray	getDestination(PdfObject destination)
private PdfArray	getDestination(PdfObject destination, Set<PdfObject> checkedDestinations)
private PdfObject	getStructureDestinationObject(PdfDictionary annotObj)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

pdfDoc

private final PdfDocument pdfDoc

context

private final PdfUAValidationContext context

destinationToStructParentsMap

private final Map<PdfObject, Set<IStructureNode>> destinationToStructParentsMap

Constructor Details

PdfUA2LinkChecker

private PdfUA2LinkChecker(PdfUAValidationContext context,
 PdfDocument pdfDoc)

Method Details

checkLinkAnnotations

public static void checkLinkAnnotations(PdfDocument document)

Verifies that each link annotation present in the document is tagged.

Parameters:

document - the PdfDocument to check links for

checkLinkAnnotationStructureParent

private void checkLinkAnnotationStructureParent(IStructureNode elem)

Checks that link annotation is enclosed in either a Link or Reference structure element.

Also checks that link annotations that target different locations are in separate Link or Reference structure elements, and multiple link annotations targeting the same location are included in a single Link or Reference structure element.

Parameters:

elem - link annotation object reference in the structure tree

checkStructDestinationsInLinkAndReference

private void checkStructDestinationsInLinkAndReference(PdfObjRef objRef)

Checks that link annotations that target different locations (destinations) are in separate Link or Reference structure elements, and multiple link annotations targeting the same location are included in a single Link or Reference structure element.

Parameters:

objRef - link annotation object reference in the structure tree

getStructureDestinationObject

private PdfObject getStructureDestinationObject(PdfDictionary annotObj)

getDestination

private PdfArray getDestination(PdfObject destination)

getDestination

private PdfArray getDestination(PdfObject destination,
 Set<PdfObject> checkedDestinations)