/*
* 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.ParamContainerTag;
import javax.el.ELContext;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.jstl.fmt.LocalizationContext;
import javax.servlet.jsp.tagext.BodyTagSupport;
import java.util.ArrayList;
/**
* Looks up an i18n message from a bundle and prints it.
*/
public class MessageTag extends BodyTagSupport implements ParamContainerTag {
private Expr _keyExpr;
private Expr _bundleExpr;
private ArrayList<Object> _params;
private String _var;
private String _scope;
/**
* Sets the message key.
*
* @param key the JSP-EL expression for the key.
*/
public void setKey(Expr key)
{
_keyExpr = key;
}
/**
* Sets the bundle.
*
* @param bundle the JSP-EL expression for the bundle.
*/
public void setBundle(Expr bundle)
{
_bundleExpr = bundle;
}
/**
* Sets the variable.
*
* @param var the variable
*/
public void setVar(String var)
{
_var = var;
}
/**
* Sets the scope.
*
* @param scope the scope
*/
public void setScope(String scope)
{
_scope = scope;
}
/**
* Add a parameter value to the message.
*/
public void addParam(Object value)
{
if (_params == null)
_params = new ArrayList<Object>();
_params.add(value);
}
/**
* Process the tag.
*/
public int doEndTag()
throws JspException
{
Object []args = null;
if (_params != null) {
args = _params.toArray(new Object[_params.size()]);
_params = null;
}
try {
PageContextImpl pageContext = (PageContextImpl) this.pageContext;
ELContext env = pageContext.getELContext();
JspWriter out = pageContext.getOut();
String key;
if (_keyExpr != null)
key = _keyExpr.evalString(env);
else
key = getBodyContent().getString().trim();
String msg;
if (_bundleExpr != null) {
Object bundleObject = _bundleExpr.evalObject(env);
msg = pageContext.getLocalizedMessage(bundleObject, key, args, null);
}
else {
LocalizationContext lc;
lc = (LocalizationContext) pageContext.getAttribute("caucho.bundle");
if (lc == null)
msg = pageContext.getLocalizedMessage(key, args, null);
else
msg = pageContext.getLocalizedMessage(lc, key, args, null);
}
if (_var != null)
CoreSetTag.setValue(pageContext, _var, _scope, msg);
else
out.print(msg);
} catch (Exception e) {
throw new JspException(e);
}
return EVAL_PAGE;
}
}