/*
* 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 Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.jstl.el;
import com.caucho.el.Expr;
import com.caucho.jsp.PageContextImpl;
import com.caucho.util.L10N;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;
/**
* Tag representing an "if" condition.
*/
public class IfTag extends TagSupport {
private static L10N L = new L10N(IfTag.class);
private Expr _testExpr;
private String _var;
private String _scope;
/**
* Sets the JSP-EL expression value.
*/
public void setTest(Expr test)
{
_testExpr = test;
}
/**
* Sets the variable which should contain the result of the test.
*/
public void setVar(String var)
{
_var = var;
}
/**
* Sets the scope for the variable.
*/
public void setScope(String scope)
{
_scope = scope;
}
/**
* Process the tag.
*/
public int doStartTag()
throws JspException
{
try {
PageContextImpl pageContext = (PageContextImpl) this.pageContext;
boolean test = _testExpr.evalBoolean(pageContext.getELContext());
Boolean value = test ? Boolean.TRUE : Boolean.FALSE;
if (_var == null) {
}
else
CoreSetTag.setValue(pageContext, _var, _scope, value);
return test ? EVAL_BODY_INCLUDE : SKIP_BODY;
} catch (Exception e) {
throw new JspException(e);
}
}
}