001    // Copyright 2009 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.dom;
016    
017    /**
018     * A callback interface used navigate the {@link org.apache.tapestry5.dom.Element}s of a document.
019     *
020     * @since 5.1.0.0
021     */
022    public interface Visitor
023    {
024        /**
025         * Called for each Element being visited.
026         *
027         * @param element visited
028         */
029        void visit(Element element);
030    }