ExtensionHandler.java

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.faces.facelets.tag.composite;

import com.sun.faces.facelets.compiler.CompilationMessageHolder;
import com.sun.faces.facelets.compiler.EncodingHandler;

import javax.faces.component.UIComponent;
import javax.faces.view.facelets.FaceletContext;
import javax.faces.view.facelets.TagConfig;
import javax.faces.view.facelets.TagHandler;
import java.io.IOException;


public class ExtensionHandler extends TagHandler {

    public ExtensionHandler(TagConfig tagConfig) {
        super(tagConfig);
    }

    @Override
    public void apply(FaceletContext ctx, UIComponent parent) throws IOException {
        // extract a prefix from the child content
        if (null != nextHandler) {
            String content = this.nextHandler.toString().trim();
            if (content.startsWith("<")) {
                int i;
                if (-1 != (i = content.indexOf(":"))) {
                    content = content.substring(1, i);
                    CompilationMessageHolder messageHolder = EncodingHandler.getCompilationMessageHolder(ctx);
                    // remove any compilation messages pertaining to this prefix
                    if (null != messageHolder) {
                        messageHolder.removeNamespacePrefixMessages(content);
                    }
                }
            }
        }

    }
    
    
    

}