/*
 * 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.
 */

/* $Id$ */

package org.apache.fop.render.pdf.extensions;

import org.xml.sax.Attributes;
import org.xml.sax.Locator;

import org.apache.fop.apps.FOPException;
import org.apache.fop.fo.Constants;
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.ValidationException;
import org.apache.fop.pdf.PDFInfo;

public class PDFDocumentInformationElement extends PDFDictionaryElement {

    PDFDocumentInformationElement(FONode parent) {
        super(parent, PDFDictionaryType.Info);
    }

    @Override
    public void processNode(String elementName, Locator locator, Attributes attlist,
            PropertyList propertyList) throws FOPException {
         setLocator(locator);
         super.processNode(elementName, locator, attlist, propertyList);
    }

    @Override
    public void startOfNode() throws FOPException {
        super.startOfNode();
        if (parent.getNameId() != Constants.FO_DECLARATIONS) {
            invalidChildError(getLocator(), parent.getName(), getNamespaceURI(), getName(), "rule.childOfDeclarations");
        }
    }

    @Override
    protected void validateChildNode(Locator loc, String namespaceURI, String localName)
            throws ValidationException {
        if (!(PDFElementMapping.NAMESPACE.equals(namespaceURI) && "name".equals(localName))) {
            invalidChildError(loc, namespaceURI, localName);
        }
    }

    @Override
    protected void addChildNode(FONode child) throws FOPException {
        assert child instanceof PDFCollectionEntryElement;
        PDFCollectionEntryElement name = (PDFCollectionEntryElement) child;
        PDFInfo.StandardKey standardKey = PDFInfo.StandardKey.get(name.getExtension().getKey());
        if (standardKey == null) {
            super.addChildNode(child);
        } else {
            PDFExtensionEventProducer eventProducer = getUserAgent().getEventBroadcaster()
                    .getEventProducerFor(PDFExtensionEventProducer.class);
            eventProducer.reservedKeyword(this, getLocator(), standardKey.getName());
        }
    }

}