/*

 * reserved comment block

 * DO NOT REMOVE OR ALTER!

 */

/**

 * 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.

 */

/*

 * Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.

 */

/*

 * $Id: DOMXSLTTransform.java 1788465 2017-03-24 15:10:51Z coheigea $

 */

package org.jcp.xml.dsig.internal.dom;

import java.security.InvalidAlgorithmParameterException;

import org.w3c.dom.Element;

import org.w3c.dom.Node;

import javax.xml.crypto.*;

import javax.xml.crypto.dsig.spec.TransformParameterSpec;

import javax.xml.crypto.dsig.spec.XSLTTransformParameterSpec;

/**

 * DOM-based implementation of XSLT Transform.

 * (Uses Apache XML-Sec Transform implementation)

 *

 */

public final class DOMXSLTTransform extends ApacheTransform {

    @Override

    public void init(TransformParameterSpec params)

        throws InvalidAlgorithmParameterException {

        if (params == null) {

            throw new InvalidAlgorithmParameterException("params are required");

        }

        if (!(params instanceof XSLTTransformParameterSpec)) {

            throw new InvalidAlgorithmParameterException("unrecognized params");

        }

        this.params = params;

    }

    @Override

    public void init(XMLStructure parent, XMLCryptoContext context)

        throws InvalidAlgorithmParameterException {

        super.init(parent, context);

        unmarshalParams(DOMUtils.getFirstChildElement(transformElem));

    }

    private void unmarshalParams(Element sheet) {

        this.params = new XSLTTransformParameterSpec

            (new javax.xml.crypto.dom.DOMStructure(sheet));

    }

    @Override

    public void marshalParams(XMLStructure parent, XMLCryptoContext context)

        throws MarshalException {

        super.marshalParams(parent, context);

        XSLTTransformParameterSpec xp =

            (XSLTTransformParameterSpec) getParameterSpec();

        Node xsltElem =

            ((javax.xml.crypto.dom.DOMStructure) xp.getStylesheet()).getNode();

        DOMUtils.appendChild(transformElem, xsltElem);

    }

}