PDJavascriptNameTreeNode.java

/*
 * 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;

import java.io.IOException;

import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSStream;
import org.apache.pdfbox.cos.COSString;
import org.apache.pdfbox.pdmodel.common.PDNameTreeNode;
import org.apache.pdfbox.pdmodel.common.PDTextStream;

/**
 * This class holds all of the name trees that are available at the document level.
 *
 * @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a>
 * @version $Revision: 1.1 $
 */
public class PDJavascriptNameTreeNode extends PDNameTreeNode
{
    /**
     * Constructor.
     */
    public PDJavascriptNameTreeNode()
    {
        super( PDTextStream.class );
    }

    /**
     * Constructor.
     *
     * @param dic The COS dictionary.
     */
    public PDJavascriptNameTreeNode( COSDictionary dic )
    {
        super( dic, PDTextStream.class );
    }

    /**
     * {@inheritDoc}
     */
    protected Object convertCOSToPD( COSBase base ) throws IOException
    {
        PDTextStream stream = null;
        if( base instanceof COSString )
        {
            stream = new PDTextStream((COSString)base);
        }
        else if( base instanceof COSStream )
        {
            stream = new PDTextStream((COSStream)base);
        }
        else
        {
            throw new IOException( "Error creating Javascript object, expected either COSString or COSStream and not " 
                    + base );
        }
        return stream;
    }

    /**
     * {@inheritDoc}
     */
    protected PDNameTreeNode createChildNode( COSDictionary dic )
    {
        return new PDJavascriptNameTreeNode(dic);
    }
}