/*
* 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.util.L10N;
import javax.el.ELException;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.jstl.core.Config;
import javax.servlet.jsp.tagext.TagSupport;
import java.util.TimeZone;
/**
* Sets the time zone for the current page.
*/
public class SetTimeZoneTag extends TagSupport {
private static L10N L = new L10N(SetTimeZoneTag.class);
private Expr _valueExpr;
private String _var;
private String _scope;
/**
* Sets the JSP-EL expression for the locale value.
*/
public void setValue(Expr value)
{
_valueExpr = value;
}
/**
* Sets the variable containing the time zone.
*/
public void setVar(String var)
{
_var = var;
}
/**
* Sets the scope to store the bundle.
*/
public void setScope(String scope)
{
_scope = scope;
}
/**
* Process the tag.
*/
public int doStartTag()
throws JspException
{
try {
PageContextImpl pageContext = (PageContextImpl) this.pageContext;
Object valueObj = _valueExpr.evalObject(pageContext.getELContext());
TimeZone timeZone = null;
if (valueObj instanceof TimeZone) {
timeZone = (TimeZone) valueObj;
}
else if (valueObj instanceof String) {
String string = (String) valueObj;
string = string.trim();
if (string.equals(""))
timeZone = TimeZone.getTimeZone("GMT");
else
timeZone = TimeZone.getTimeZone(string);
}
else
timeZone = TimeZone.getTimeZone("GMT");
String var = _var;
if (var == null)
var = Config.FMT_TIME_ZONE;
CoreSetTag.setValue(pageContext, var, _scope, timeZone);
return SKIP_BODY;
} catch (ELException e) {
throw new JspException(e);
}
}
}