/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package javax.servlet.jsp.jstl.core;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.TagSupport;
abstract public class ConditionalTagSupport extends TagSupport {
private String _var;
private String _scope;
public void setVar(String var)
{
_var = var;
}
public void setScope(String scope)
{
_scope = scope;
}
protected abstract boolean condition() throws JspTagException;
/**
* Process the tag.
*/
public int doStartTag()
throws JspException
{
boolean test = condition();
Boolean value = test ? Boolean.TRUE : Boolean.FALSE;
if (_var == null) {
}
else if (_scope == null || _scope.equals("") || _scope.equals("page"))
pageContext.setAttribute(_var, value);
else if (_scope.equals("request"))
pageContext.getRequest().setAttribute(_var, value);
else if (_scope.equals("session"))
pageContext.getSession().setAttribute(_var, value);
else if (_scope.equals("application"))
pageContext.getServletContext().setAttribute(_var, value);
else
throw new JspException("unknown scope `" + _scope + "'");
return test ? EVAL_BODY_INCLUDE : SKIP_BODY;
}
}