1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
   10    *
   11    * Unless required by applicable law or agreed to in writing, software
   12    * distributed under the License is distributed on an "AS IS" BASIS,
   13    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   14    * See the License for the specific language governing permissions and
   15    * limitations under the License.
   16    */
   17   package org.apache.pdfbox.pdmodel;
   18   
   19   import java.io.IOException;
   20   
   21   import org.apache.pdfbox.cos.COSBase;
   22   import org.apache.pdfbox.cos.COSDictionary;
   23   import org.apache.pdfbox.cos.COSStream;
   24   import org.apache.pdfbox.cos.COSString;
   25   import org.apache.pdfbox.pdmodel.common.PDNameTreeNode;
   26   import org.apache.pdfbox.pdmodel.common.PDTextStream;
   27   
   28   /**
   29    * This class holds all of the name trees that are available at the document level.
   30    *
   31    * @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a>
   32    * @version $Revision: 1.1 $
   33    */
   34   public class PDJavascriptNameTreeNode extends PDNameTreeNode
   35   {
   36       /**
   37        * Constructor.
   38        */
   39       public PDJavascriptNameTreeNode()
   40       {
   41           super( PDTextStream.class );
   42       }
   43   
   44       /**
   45        * Constructor.
   46        *
   47        * @param dic The COS dictionary.
   48        */
   49       public PDJavascriptNameTreeNode( COSDictionary dic )
   50       {
   51           super( dic, PDTextStream.class );
   52       }
   53   
   54       /**
   55        * {@inheritDoc}
   56        */
   57       protected Object convertCOSToPD( COSBase base ) throws IOException
   58       {
   59           PDTextStream stream = null;
   60           if( base instanceof COSString )
   61           {
   62               stream = new PDTextStream((COSString)base);
   63           }
   64           else if( base instanceof COSStream )
   65           {
   66               stream = new PDTextStream((COSStream)base);
   67           }
   68           else
   69           {
   70               throw new IOException( "Error creating Javascript object, expected either COSString or COSStream and not " 
   71                       + base );
   72           }
   73           return stream;
   74       }
   75   
   76       /**
   77        * {@inheritDoc}
   78        */
   79       protected PDNameTreeNode createChildNode( COSDictionary dic )
   80       {
   81           return new PDJavascriptNameTreeNode(dic);
   82       }
   83   }