com.itextpdf.html2pdf.attach.util

Class AlternateDescriptionResolver

java.lang.Object

com.itextpdf.html2pdf.attach.util.AlternateDescriptionResolver

public class AlternateDescriptionResolver
extends Object

Helper class for resolving the alternate description of an IAccessibleElement. The alternate description is resolved in the following order: 1) alt attribute 2) title attribute 3) aria-label attribute 4) aria-description attribute 5) aria-describedby attribute 6) aria-labelledby attribute

If none of the above attributes are present, the alternate description is not set.

Constructor Summary

Constructors

Constructor and Description
AlternateDescriptionResolver() Creates a new AlternateDescriptionResolver instance.

Method Summary

Modifier and Type	Method and Description
void	resolve(com.itextpdf.layout.tagging.IAccessibleElement accessibleElement, com.itextpdf.styledxmlparser.node.IElementNode element) Resolves the alternate description of the IAccessibleElement based on the attributes of the IElementNode.
protected void	resolveFallback(com.itextpdf.layout.tagging.IAccessibleElement accessibleElement, com.itextpdf.styledxmlparser.node.IElementNode element) Resolves the alternate description of the IAccessibleElement based on the attributes of the IElementNode in a fallback manner.
void	resolveLabelableElement(com.itextpdf.layout.tagging.IAccessibleElement accessibleElement, com.itextpdf.styledxmlparser.node.IElementNode element, ProcessorContext context) Resolves the alternate description of the labeled IAccessibleElement based on the attributes of the IElementNode and ProcessorContext.
protected boolean	resolveLink(com.itextpdf.layout.tagging.IAccessibleElement accessibleElement, com.itextpdf.styledxmlparser.node.IElementNode element) Resolves the alternate description of the IAccessibleElement based on the attributes of the IElementNode.
protected boolean	resolveSvg(com.itextpdf.svg.element.SvgImage accessibleElement, com.itextpdf.styledxmlparser.node.IElementNode element) Resolves the alternate description of the SvgImage based on the attributes of the IElementNode.

Methods inherited from class java.lang.Object

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

Constructor Detail

AlternateDescriptionResolver

public AlternateDescriptionResolver()

Creates a new AlternateDescriptionResolver instance.

Method Detail

resolve

public void resolve(com.itextpdf.layout.tagging.IAccessibleElement accessibleElement,
                    com.itextpdf.styledxmlparser.node.IElementNode element)

Resolves the alternate description of the IAccessibleElement based on the attributes of the IElementNode.

Parameters:

accessibleElement - the IAccessibleElement to which the alternate description should be applied.

element - the IElementNode from which the alternate description should be resolved.

resolveLabelableElement

public void resolveLabelableElement(com.itextpdf.layout.tagging.IAccessibleElement accessibleElement,
                                    com.itextpdf.styledxmlparser.node.IElementNode element,
                                    ProcessorContext context)

Resolves the alternate description of the labeled IAccessibleElement based on the attributes of the IElementNode and ProcessorContext.

Parameters:

accessibleElement - the IAccessibleElement to which the alternate description should be applied.

element - the IElementNode from which properties the alternate description should be resolved.

context - the ProcessorContext from which the alternate description should be resolved.

resolveLink

protected boolean resolveLink(com.itextpdf.layout.tagging.IAccessibleElement accessibleElement,
                              com.itextpdf.styledxmlparser.node.IElementNode element)

Resolves the alternate description of the IAccessibleElement based on the attributes of the IElementNode. If the link has an img tag as a child, the alt attribute of the img tag is used as the alternate description.

Parameters:

accessibleElement - the IAccessibleElement to which the alternate description should be applied.

element - the IElementNode from which the alternate description should be resolved.

Returns:

true if the alternate description was resolved, false otherwise.

resolveFallback

protected void resolveFallback(com.itextpdf.layout.tagging.IAccessibleElement accessibleElement,
                               com.itextpdf.styledxmlparser.node.IElementNode element)

Resolves the alternate description of the IAccessibleElement based on the attributes of the IElementNode in a fallback manner.

Parameters:

accessibleElement - the IAccessibleElement to which the alternate description should be applied.

element - the IElementNode from which the alternate description should be resolved.

resolveSvg

protected boolean resolveSvg(com.itextpdf.svg.element.SvgImage accessibleElement,
                             com.itextpdf.styledxmlparser.node.IElementNode element)

Resolves the alternate description of the SvgImage based on the attributes of the IElementNode.

If the alternate description is not found in the attributes, it is searched for the <descr> tag the child nodes.

Parameters:

accessibleElement - the SvgImage to which the alternate description should be applied.

element - the IElementNode from which the alternate description should be resolved.

Returns:

true if the alternate description was resolved, false otherwise.