com.sun.faces.taglib.html_basic.CommandTagParserImpl Maven / Gradle / Ivy

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This is the master POM file for Sun's Implementation of the JSF 1.2 Specification.
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/*
 * $Id: CommandTagParserImpl.java,v 1.16 2007/04/27 22:01:04 ofung Exp $
 */

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. 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.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/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 glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [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.taglib.html_basic;

import com.sun.faces.RIConstants;
import com.sun.faces.taglib.TagParser;
import com.sun.faces.taglib.ValidatorInfo;
import org.xml.sax.Attributes;

import java.text.MessageFormat;
import java.util.ResourceBundle;

/**
 *  Parses the command tag attributes and verifies that the required
 * attributes are present
 */
public class CommandTagParserImpl implements TagParser {

    //*********************************************************************
    // Validation and configuration state (protected)

    // PENDING(edburns): Make this localizable
    private StringBuffer failureMessages;	// failureMessages
    private boolean failed;
    private ValidatorInfo validatorInfo;

    //*********************************************************************
    // Constructor and lifecycle management

    /**
     * CommandTagParserImpl constructor
     */
    public CommandTagParserImpl() {
        failed = false;
        failureMessages = new StringBuffer();
    }


    /**
     * Set the validator info object that has the current tag
     * information
     *
     * @param ValidatorInfo object with current tag info
     */
    public void setValidatorInfo(ValidatorInfo validatorInfo) {
        this.validatorInfo = validatorInfo;
    }


    /**
     * Get the failure message
     *
     * @return String Failure message
     */
    public String getMessage() {
        return failureMessages.toString();
    }


    /**
     * Return false if validator conditions have not been met
     *
     * @return boolean false if validation conditions have not been met
     */
    public boolean hasFailed() {
        return failed;
    }


    /**
     * Parse the starting element.  Parcel out to appropriate
     * handler method.
     */
    public void parseStartElement() {
        String ns = validatorInfo.getNameSpace();
        String ln = validatorInfo.getLocalName();

        if (ns.equals(RIConstants.HTML_NAMESPACE)) {
            if (ln.equals("commandButton")) {
                handleCommandButton();
            }
        
        }
    }


    /**
     * Parse the end element
     */
    public void parseEndElement() {
        //no parsing required
    }


    //*********************************************************************
    // Private methods

    /**
     * set failed flag to true unless tag has a value attribute.
     * 
     * 
PRECONDITION: qn is a commandButton
     */
    private void handleCommandButton() {
        Attributes attrs = validatorInfo.getAttributes();
        String ln = validatorInfo.getLocalName();
        boolean hasValue = false;
        boolean hasImage = false;
	boolean hasBinding = false;

        for (int i = 0; i < attrs.getLength(); i++) {
            if (attrs.getLocalName(i).equals("value")) {
                hasValue = true;
            }
            if (attrs.getLocalName(i).equals("image")) {
                hasImage = true;
            }
            if (attrs.getLocalName(i).equals("binding")) {
                hasBinding = true;
            }
        }
        if (failed = (!hasBinding && !(hasValue || hasImage))) {
            Object[] obj = new Object[1];
            obj[0] = ln;
            ResourceBundle rb = ResourceBundle.getBundle(
                RIConstants.TLV_RESOURCE_LOCATION);
            failureMessages.append(
                MessageFormat.format(rb.getString("TLV_COMMAND_ERROR"), obj));
            failureMessages.append("\n");
        }

    }

}