Package com.itextpdf.pdfua.checkers.utils.ua2

Class PdfUA2HeadingsChecker

java.lang.Object

com.itextpdf.pdfua.checkers.utils.ua2.PdfUA2HeadingsChecker

       public final class PdfUA2HeadingsChecker extends Object
      

Utility class which performs headings check according to PDF/UA-2 specification.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PdfUA2HeadingsChecker.PdfUA2HeadingHandler	Handler class that checks heading tags while traversing the tag tree.

Constructor Summary

Constructors

Constructor	Description
PdfUA2HeadingsChecker(PdfUAValidationContext context)	Creates a new instance of PdfUA2HeadingsChecker.

Method Summary

Modifier and Type	Method	Description
void	checkLayoutElement(IRenderer renderer)	Checks if layout element has correct heading according to PDF/UA-2 specification.
void	checkStructElement(IStructureNode structNode)	Checks if layout element has correct heading according to PDF/UA-2 specification.

Methods inherited from class java.lang.Object

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

Constructor Details

PdfUA2HeadingsChecker

             public PdfUA2HeadingsChecker
             (PdfUAValidationContext context)
            

Creates a new instance of PdfUA2HeadingsChecker.

Parameters:

context - the validation context

Method Details

checkLayoutElement

             public void checkLayoutElement
             (IRenderer renderer)
            

Checks if layout element has correct heading according to PDF/UA-2 specification.

Conforming files shall use the explicitly numbered heading structure types (H1-Hn) and shall not use the H structure type.

Note, that PDF/UA-2 specification does not include requirements on the use of sequential heading levels. But where a heading’s level is evident, the heading level of the structure element enclosing it shall match that heading level, e.g. a heading with the real content “5.1.6.4 Some header” is evidently at heading level 4. This requirement is not checked.

Parameters:

renderer - layout element to check

Throws:

PdfUAConformanceException - if document uses the H structure type

checkStructElement

             public void checkStructElement
             (IStructureNode structNode)
            

Checks if layout element has correct heading according to PDF/UA-2 specification.

Conforming files shall use the explicitly numbered heading structure types (H1-Hn) and shall not use the H structure type.

Note, that PDF/UA-2 specification does not include requirements on the use of sequential heading levels. But where a heading’s level is evident, the heading level of the structure element enclosing it shall match that heading level, e.g. a heading with the real content “5.1.6.4 Some header” is evidently at heading level 4. This requirement is not checked.

Parameters:

structNode - structure element to check

Throws:

PdfUAConformanceException - if document uses the H structure type