LoginUrlTag.java

/*
 *  (C) Copyright 2000-2003 Yale University. All rights reserved.
 *
 *  THIS SOFTWARE IS PROVIDED "AS IS," AND ANY EXPRESS OR IMPLIED
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 *  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA OR
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 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH
 *  DAMAGE.
 *
 *  Redistribution and use of this software in source or binary forms,
 *  with or without modification, are permitted, provided that the
 *  following conditions are met:
 *
 *  1. Any redistribution must include the above copyright notice and
 *  disclaimer and this list of conditions in any related documentation
 *  and, if feasible, in the redistributed software.
 *
 *  2. Any redistribution must include the acknowledgment, "This product
 *  includes software developed by Yale University," in any related
 *  documentation and, if feasible, in the redistributed software.
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package edu.yale.its.tp.cas.client.taglib;

import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.BodyTagSupport;

/**
 * <p>
 * Tag for indicating CAS's "login URL" for the cas:auth tag.
 * </p>
 * 
 * @author Shawn Bayern
 */
public class LoginUrlTag extends BodyTagSupport {

    // *********************************************************************
    // Tag logic

    public int doEndTag() throws JspTagException {
        String loginUrl = null;
        if (bodyContent != null)
            loginUrl = bodyContent.getString();
        if (loginUrl != null)
            loginUrl = loginUrl.trim();
        if (!(getParent() instanceof AuthTag))
            throw new JspTagException("illegal cas:loginUrl outside cas:auth");
        else
            ((AuthTag) getParent()).setCasLogin(loginUrl);
        return EVAL_PAGE;
    }

}