/*
* 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 com.caucho.jstl.el;
import com.caucho.el.Expr;
import com.caucho.jsp.PageContextImpl;
import com.caucho.jstl.NameValueTag;
import com.caucho.util.L10N;
import javax.el.ELContext;
import javax.el.ELException;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.BodyTagSupport;
/**
* Looks up an i18n message from a bundle and prints it.
*/
public class XmlParamTag extends BodyTagSupport {
private static L10N L = new L10N(XmlParamTag.class);
private Expr _nameExpr;
private Expr _valueExpr;
/**
* Sets the name
*
* @param name the JSP-EL expression for the name.
*/
public void setName(Expr name)
{
_nameExpr = name;
}
/**
* Sets the value
*
* @param value the JSP-EL expression for the value.
*/
public void setValue(Expr value)
{
_valueExpr = value;
}
/**
* Process the tag.
*/
public int doStartTag()
throws JspException
{
try {
if (_valueExpr == null)
return EVAL_BODY_BUFFERED;
PageContextImpl pageContext = (PageContextImpl) this.pageContext;
ELContext env = pageContext.getELContext();
String name = _nameExpr.evalString(env);
String value = _valueExpr.evalString(env);
Object parent = getParent();
if (! (parent instanceof NameValueTag))
throw new JspException(L.l("x:param requires x:transform."));
NameValueTag tag = (NameValueTag) parent;
tag.addParam(name, value);
return SKIP_BODY;
} catch (ELException e) {
throw new JspException(e);
}
}
/**
* Process the tag.
*/
public int doEndTag()
throws JspException
{
try {
if (_valueExpr != null)
return EVAL_PAGE;
String value;
if (this.bodyContent != null)
value = this.bodyContent.getString().trim();
else
value = "";
PageContextImpl pageContext = (PageContextImpl) this.pageContext;
String name = _nameExpr.evalString(pageContext.getELContext());
Object parent = getParent();
if (! (parent instanceof NameValueTag))
throw new JspException(L.l("c:param requires c:url or c:import parent."));
NameValueTag tag = (NameValueTag) parent;
tag.addParam(name, value);
return EVAL_PAGE;
} catch (ELException e) {
throw new JspException(e);
}
}
}