/*
 * 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.xerces.dom;

import java.io.IOException;
import java.io.NotSerializableException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import org.w3c.dom.Attr;
import org.w3c.dom.DOMConfiguration;
import org.w3c.dom.DOMException;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.UserDataHandler;

/**
 * Our own document implementation, which knows how to create an element
 * with PSVI information.
 * 
 * @xerces.internal
 * 
 * @author Sandy Gao, IBM
 * 
 * @version $Id: PSVIDocumentImpl.java 699902 2008-09-28 21:40:49Z mrglavas $
 */
public class PSVIDocumentImpl extends DocumentImpl {
   
    /** Serialization version. */
    static final long serialVersionUID = -8822220250676434522L;

    /**
     * Create a document.
     */
    public PSVIDocumentImpl() {
        super();
    }

    /**
     * For DOM2 support.
     * The createDocument factory method is in DOMImplementation.
     */
    public PSVIDocumentImpl(DocumentType doctype) {
        super(doctype);
    }
    
    /**
     * Deep-clone a document, including fixing ownerDoc for the cloned
     * children. Note that this requires bypassing the WRONG_DOCUMENT_ERR
     * protection. I've chosen to implement it by calling importNode
     * which is DOM Level 2.
     *
     * @return org.w3c.dom.Node
     * @param deep boolean, iff true replicate children
     */
    public Node cloneNode(boolean deep) {

        PSVIDocumentImpl newdoc = new PSVIDocumentImpl();
        callUserDataHandlers(this, newdoc, UserDataHandler.NODE_CLONED);
        cloneNode(newdoc, deep);

        // experimental
        newdoc.mutationEvents = mutationEvents;

        return newdoc;

    } // cloneNode(boolean):Node
	    
    /**
     * Retrieve information describing the abilities of this particular
     * DOM implementation. Intended to support applications that may be
     * using DOMs retrieved from several different sources, potentially
     * with different underlying representations.
     */
    public DOMImplementation getImplementation() {
        // Currently implemented as a singleton, since it's hardcoded
        // information anyway.
        return PSVIDOMImplementationImpl.getDOMImplementation();
    }

    /**
     * Create an element with PSVI information
     */
    public Element createElementNS(String namespaceURI, String qualifiedName)
        throws DOMException {
        return new PSVIElementNSImpl(this, namespaceURI, qualifiedName);
    }

    /**
     * Create an element with PSVI information
     */
    public Element createElementNS(String namespaceURI, String qualifiedName,
                                   String localpart) throws DOMException {
        return new PSVIElementNSImpl(this, namespaceURI, qualifiedName, localpart);
    }

    /**
     * Create an attribute with PSVI information
     */
    public Attr createAttributeNS(String namespaceURI, String qualifiedName)
        throws DOMException {
        return new PSVIAttrNSImpl(this, namespaceURI, qualifiedName);
    } 
    
    /**
     * Create an attribute with PSVI information
     */
    public Attr createAttributeNS(String namespaceURI, String qualifiedName,
                                  String localName) throws DOMException {
        return new PSVIAttrNSImpl(this, namespaceURI, qualifiedName, localName);
    } 
    
    /**
     * 
     * The configuration used when <code>Document.normalizeDocument</code> is 
     * invoked. 
     * @since DOM Level 3
     */
    public DOMConfiguration getDomConfig(){
        super.getDomConfig();
        return fConfiguration;
    }
    
    // REVISIT: Forbid serialization of PSVI DOM until
    // we support object serialization of grammars -- mrglavas
    
    private void writeObject(ObjectOutputStream out)
        throws IOException {
        throw new NotSerializableException(getClass().getName());
	}

    private void readObject(ObjectInputStream in) 
        throws IOException, ClassNotFoundException {
        throw new NotSerializableException(getClass().getName());
    }
    
} // class PSVIDocumentImpl
