001/*
002 * (C) Copyright 2006-2008 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     <a href="mailto:at@nuxeo.com">Anahide Tchertchian</a>
018 *
019 * $Id$
020 */
021
022package org.nuxeo.ecm.platform.ui.web.tag.handler;
023
024import java.io.IOException;
025
026import javax.el.ELException;
027import javax.faces.FacesException;
028import javax.faces.component.UIComponent;
029import javax.faces.view.facelets.ComponentConfig;
030import javax.faces.view.facelets.FaceletContext;
031
032import org.apache.commons.logging.Log;
033import org.apache.commons.logging.LogFactory;
034
035import com.sun.faces.facelets.tag.jsf.html.HtmlComponentHandler;
036
037/**
038 * Handler for deprecated components.
039 * <p>
040 * Behaves like a {@link HtmlComponentHandler} but issues a deprecation warning log when used.
041 *
042 * @author Anahide Tchertchian
043 */
044public class DeprecatedComponentHandler extends HtmlComponentHandler {
045
046    private static final Log log = LogFactory.getLog(DeprecatedComponentHandler.class);
047
048    public DeprecatedComponentHandler(ComponentConfig config) {
049        super(config);
050    }
051
052    @Override
053    public void applyNextHandler(FaceletContext ctx, UIComponent c) throws IOException, FacesException, ELException {
054        if (log.isWarnEnabled()) {
055            log.warn("Component '" + c + "' is deprecated and might not work correctly. "
056                    + "Try to use an equivalent tag in another library");
057        }
058        super.applyNextHandler(ctx, c);
059    }
060
061}