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* Copyright (c) 2003-2005, www.pdfbox.org
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package org.pdfbox.cos;
import org.pdfbox.filter.FilterManager;
import org.pdfbox.pdmodel.common.COSObjectable;
import org.pdfbox.exceptions.COSVisitorException;
/**
* The base object that all objects in the PDF document will extend.
*
* @author <a href="ben@benlitchfield.com">Ben Litchfield</a>
* @version $Revision: 1.14 $
*/
public abstract class COSBase implements COSObjectable
{
/**
* Constructor.
*/
public COSBase()
{
}
/**
* This will get the filter manager to use to filter streams.
*
* @return The filter manager.
*/
public FilterManager getFilterManager()
{
/**
* @todo move this to PDFdocument or something better
*/
return new FilterManager();
}
/**
* Convert this standard java object to a COS object.
*
* @return The cos object that matches this Java object.
*/
public COSBase getCOSObject()
{
return this;
}
/**
* visitor pattern double dispatch method.
*
* @param visitor The object to notify when visiting this object.
* @return any object, depending on the visitor implementation, or null
* @throws COSVisitorException If an error occurs while visiting this object.
*/
public abstract Object accept(ICOSVisitor visitor) throws COSVisitorException;
}