Class PdfUA1HeadingsChecker

java.lang.Object

com.itextpdf.pdfua.checkers.utils.ua1.PdfUA1HeadingsChecker

public final class PdfUA1HeadingsChecker
extends Object

Utility class which performs headings check according to PDF/UA-1 specification.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PdfUA1HeadingsChecker.PdfUA1HeadingHandler	Handler class that checks heading tags while traversing the tag tree.

Field Summary

Fields

Modifier and Type	Field	Description
private final PdfUAValidationContext	context
private static final Pattern	Hn_PATTERN
private final Set<PdfDictionary>	hPdfDictParents
private final Set<IRenderer>	hRendererParents
private int	previousHn
private boolean	wasAtLeastOneH

Constructor Summary

Constructors

Constructor	Description
PdfUA1HeadingsChecker(PdfUAValidationContext context)	Creates a new instance of PdfUA1HeadingsChecker.

Method Summary

Modifier and Type	Method	Description
private void	checkHAndHnUsing(String role)
private void	checkHnSequence(String role)
void	checkLayoutElement(IRenderer renderer)	Checks if layout element has correct heading.
void	checkStructElement(IStructureNode structNode)	Checks if structure element has correct heading.
private static int	extractNumber(String heading)
private static PdfDictionary	extractPdfDictFromNode(IStructureNode node)

Methods inherited from class Object

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

Field Details

Hn_PATTERN

private static final Pattern Hn_PATTERN

context

private final PdfUAValidationContext context

hRendererParents

private final Set<IRenderer> hRendererParents

hPdfDictParents

private final Set<PdfDictionary> hPdfDictParents

previousHn

private int previousHn

wasAtLeastOneH

private boolean wasAtLeastOneH

Constructor Details

PdfUA1HeadingsChecker

public PdfUA1HeadingsChecker(PdfUAValidationContext context)

Creates a new instance of PdfUA1HeadingsChecker.

Parameters:

context - the validation context

Method Details

checkLayoutElement

public void checkLayoutElement(IRenderer renderer)

Checks if layout element has correct heading.

Parameters:

renderer - layout element to check

Throws:

PdfUAConformanceException - if headings sequence is incorrect

checkStructElement

public void checkStructElement(IStructureNode structNode)

Checks if structure element has correct heading.

Parameters:

structNode - structure element to check

Throws:

PdfUAConformanceException - if headings sequence is incorrect

checkHnSequence

private void checkHnSequence(String role)

checkHAndHnUsing

private void checkHAndHnUsing(String role)

extractNumber

private static int extractNumber(String heading)

extractPdfDictFromNode

private static PdfDictionary extractPdfDictFromNode(IStructureNode node)