001/*
002 * (C) Copyright 2006-2008 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     <a href="mailto:at@nuxeo.com">Anahide Tchertchian</a>
016 *
017 * $Id$
018 */
019
020package org.nuxeo.ecm.platform.ui.web.tag.handler;
021
022import java.io.IOException;
023
024import javax.el.ELException;
025import javax.faces.FacesException;
026import javax.faces.component.UIComponent;
027import javax.faces.view.facelets.ComponentConfig;
028import javax.faces.view.facelets.FaceletContext;
029
030import org.apache.commons.logging.Log;
031import org.apache.commons.logging.LogFactory;
032
033import com.sun.faces.facelets.tag.jsf.html.HtmlComponentHandler;
034
035/**
036 * Handler for deprecated components.
037 * <p>
038 * Behaves like a {@link HtmlComponentHandler} but issues a deprecation warning log when used.
039 *
040 * @author Anahide Tchertchian
041 */
042public class DeprecatedComponentHandler extends HtmlComponentHandler {
043
044    private static final Log log = LogFactory.getLog(DeprecatedComponentHandler.class);
045
046    public DeprecatedComponentHandler(ComponentConfig config) {
047        super(config);
048    }
049
050    @Override
051    public void applyNextHandler(FaceletContext ctx, UIComponent c) throws IOException, FacesException, ELException {
052        if (log.isWarnEnabled()) {
053            log.warn("Component '" + c + "' is deprecated and might not work correctly. "
054                    + "Try to use an equivalent tag in another library");
055        }
056        super.applyNextHandler(ctx, c);
057    }
058
059}