com.itextpdf.kernel.pdf.canvas.parser.listener

Class FilteredTextEventListener

java.lang.Object

com.itextpdf.kernel.pdf.canvas.parser.listener.FilteredEventListener

com.itextpdf.kernel.pdf.canvas.parser.listener.FilteredTextEventListener

All Implemented Interfaces:

IEventListener, ITextExtractionStrategy

public class FilteredTextEventListener
extends FilteredEventListener
implements ITextExtractionStrategy

A text event listener which filters events on the fly before passing them on to the delegate. The only difference from FilteredEventListener is that this class conveniently implements ITextExtractionStrategy and can therefore used as a strategy on its own, apart from the inherited function of filtering event appropriately to its delegates.

Field Summary

Fields inherited from class com.itextpdf.kernel.pdf.canvas.parser.listener.FilteredEventListener

delegates, filters

Constructor Summary

Constructors

Constructor and Description
FilteredTextEventListener(ITextExtractionStrategy delegate, IEventFilter... filterSet) Constructs a FilteredTextEventListener instance with a ITextExtractionStrategy delegate.

Method Summary

Modifier and Type	Method and Description
String	getResultantText() As an resultant text we use the concatenation of all the resultant text of all the delegates that implement ITextExtractionStrategy.

Methods inherited from class com.itextpdf.kernel.pdf.canvas.parser.listener.FilteredEventListener

attachEventListener, eventOccurred, getSupportedEvents

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.itextpdf.kernel.pdf.canvas.parser.listener.IEventListener

eventOccurred, getSupportedEvents

Constructor Detail

FilteredTextEventListener

public FilteredTextEventListener(ITextExtractionStrategy delegate,
                                 IEventFilter... filterSet)

Constructs a FilteredTextEventListener instance with a ITextExtractionStrategy delegate.

Parameters:

delegate - a delegate that fill be called when all the corresponding filters for an event pass

filterSet - filters attached to the delegate that will be tested before passing an event on to the delegate

Method Detail

getResultantText

public String getResultantText()

As an resultant text we use the concatenation of all the resultant text of all the delegates that implement ITextExtractionStrategy.

Specified by:

getResultantText in interface ITextExtractionStrategy

Returns:

the resulting concatenation of the text extracted from the delegates