org.apache.pdfbox.pdmodel.PDDocumentNameDestinationDictionary Maven / Gradle / Ivy
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The Apache PDFBox library is an open source Java tool for working with PDF documents.
/*
* Copyright 2015 The Apache Software Foundation.
*
* Licensed 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.COSArray;
import org.apache.pdfbox.cos.COSBase;
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.documentnavigation.destination.PDDestination;
/**
* This encapsulates the "dictionary of names and corresponding destinations" for the /Dests entry
* in the document catalog.
*
* @author Tilman Hausherr
*/
public class PDDocumentNameDestinationDictionary implements COSObjectable
{
private final COSDictionary nameDictionary;
/**
* Constructor.
*
* @param dict The dictionary of names and corresponding destinations.
*/
public PDDocumentNameDestinationDictionary(COSDictionary dict)
{
this.nameDictionary = dict;
}
/**
* Convert this standard java object to a COS object.
*
* @return The cos dictionary for this object.
*/
@Override
public COSDictionary getCOSObject()
{
return nameDictionary;
}
/**
* Returns the destination corresponding to the parameter.
*
* @param name The destination name.
* @return The destination for that name, or null if there isn't any.
*
* @throws IOException if something goes wrong when creating the destination object.
*/
public PDDestination getDestination(String name) throws IOException
{
COSBase item = nameDictionary.getDictionaryObject(name);
// "The value of this entry shall be a dictionary in which each key is a destination name
// and the corresponding value is either an array defining the destination (...)
// or a dictionary with a D entry whose value is such an array."
if (item instanceof COSArray)
{
return PDDestination.create(item);
}
else if (item instanceof COSDictionary)
{
COSDictionary dict = (COSDictionary) item;
if (dict.containsKey(COSName.D))
{
return PDDestination.create(dict.getDictionaryObject(COSName.D));
}
}
return null;
}
}