<?php
/**
 * File containing ezcDocumentDocbookToEzXmlEmphasisHandler class.
 *
 * 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 Document
 * @version //autogen//
 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
 */

/**
 * Visit emphasis.
 *
 * Emphasis markup is used to emphasize text inside a paragraph and is
 * rendered, depending on the assigned role, as strong or em tags in HTML.
 *
 * @package Document
 * @version //autogen//
 */
class ezcDocumentDocbookToEzXmlEmphasisHandler extends ezcDocumentElementVisitorHandler
{
    /**
     * Handle a node
     *
     * Handle / transform a given node, and return the result of the
     * conversion.
     *
     * @param ezcDocumentElementVisitorConverter $converter
     * @param DOMElement $node
     * @param mixed $root
     * @return mixed
     */
    public function handle( ezcDocumentElementVisitorConverter $converter, DOMElement $node, $root )
    {
        if ( $node->hasAttribute( 'Role' ) &&
             ( $node->getAttribute( 'Role' ) === 'strong' ) )
        {
            $emphasis = $root->ownerDocument->createElement( 'strong' );
        }
        else
        {
            $emphasis = $root->ownerDocument->createElement( 'emphasize' );
        }

        $root->appendChild( $emphasis );
        $converter->visitChildren( $node, $emphasis );
        return $root;
    }
}

?>