/*
 * Copyright 2005 the original author or authors.
 * 
 * Licensed 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.wamblee.crawler.kiss.guide;

/**
 * Abstract visitor of the tv guide with default looping behavior.
 */
public abstract class AbstractVisitor implements Visitor {

    /**
     * Constructs the visitor.
     * 
     */
    protected AbstractVisitor() {
        // Empty
    }

    /**
     * Visits the channel by visiting all programs of the channel.
     * 
     * @param aChannel
     *            Channel to visit.
     */
    public void visitChannel(Channel aChannel) {
        for (Program program : aChannel.getPrograms()) {
            program.accept(this);
        }
    }

    /**
     * Visits the TV guide by visiting all channels of the guide.
     * 
     * @param aGuide
     *            TV guide to visit.
     */
    public void visitTvGuide(TVGuide aGuide) {
        for (Channel channel : aGuide.getChannels()) {
            channel.accept(this);
        }
    }

}