org.apache.pdfbox.pdmodel.fdf.FDFCatalog Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of pdfbox Show documentation
The Apache PDFBox library is an open source Java tool for working with PDF documents.
There is a newer version: 3.0.2
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.pdfbox.pdmodel.fdf;

import java.io.IOException;
import java.io.Writer;

import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.pdmodel.common.COSObjectable;
import org.apache.pdfbox.pdmodel.interactive.digitalsignature.PDSignature;
import org.w3c.dom.Element;

/**
 * This represents an FDF catalog that is part of the FDF document.
 *
 * @author Ben Litchfield
 */
public class FDFCatalog implements COSObjectable
{
    private COSDictionary catalog;

    /**
     * Default constructor.
     */
    public FDFCatalog()
    {
        catalog = new COSDictionary();
    }

    /**
     * Constructor.
     *
     * @param cat The FDF documents catalog.
     */
    public FDFCatalog(COSDictionary cat)
    {
        catalog = cat;
    }

    /**
     * This will create an FDF catalog from an XFDF XML document.
     *
     * @param element The XML document that contains the XFDF data.
     */
    public FDFCatalog(Element element)
    {
        this();
        FDFDictionary fdfDict = new FDFDictionary(element);
        setFDF(fdfDict);
    }

    /**
     * This will write this element as an XML document.
     *
     * @param output The stream to write the xml to.
     *
     * @throws IOException If there is an error writing the XML.
     */
    public void writeXML(Writer output) throws IOException
    {
        FDFDictionary fdf = getFDF();
        fdf.writeXML(output);
    }

    /**
     * Convert this standard java object to a COS object.
     *
     * @return The cos object that matches this Java object.
     */
    @Override
    public COSDictionary getCOSObject()
    {
        return catalog;
    }

    /**
     * This will get the version that was specified in the catalog dictionary.
     *
     * @return The FDF version.
     */
    public String getVersion()
    {
        return catalog.getNameAsString(COSName.VERSION);
    }

    /**
     * This will set the version of the FDF document.
     *
     * @param version The new version for the FDF document.
     */
    public void setVersion(String version)
    {
        catalog.setName(COSName.VERSION, version);
    }

    /**
     * This will get the FDF dictionary.
     *
     * @return The FDF dictionary.
     */
    public FDFDictionary getFDF()
    {
        COSDictionary fdf = (COSDictionary) catalog.getDictionaryObject(COSName.FDF);
        FDFDictionary retval;
        if (fdf != null)
        {
            retval = new FDFDictionary(fdf);
        }
        else
        {
            retval = new FDFDictionary();
            setFDF(retval);
        }
        return retval;
    }

    /**
     * This will set the FDF document.
     *
     * @param fdf The new FDF dictionary.
     */
    public void setFDF(FDFDictionary fdf)
    {
        catalog.setItem(COSName.FDF, fdf);
    }

    /**
     * This will get the signature or null if there is none.
     *
     * @return The signature.
     */
    public PDSignature getSignature()
    {
        PDSignature signature = null;
        COSDictionary sig = (COSDictionary) catalog.getDictionaryObject(COSName.SIG);
        if (sig != null)
        {
            signature = new PDSignature(sig);
        }
        return signature;
    }

    /**
     * This will set the signature that is associated with this catalog.
     *
     * @param sig The new signature.
     */
    public void setSignature(PDSignature sig)
    {
        catalog.setItem(COSName.SIG, sig);
    }
}