/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.anodyneos.xp.tag.fmt;
import java.util.TimeZone;
import javax.servlet.jsp.el.ELException;
import org.anodyneos.xp.XpContext;
import org.anodyneos.xp.XpException;
import org.anodyneos.xp.XpOutput;
import org.anodyneos.xp.tag.Config;
import org.anodyneos.xp.tagext.XpTagSupport;
import org.xml.sax.SAXException;
/**
* Support for tag handlers for <setTimeZone>, the time zone setting tag
* in JSTL 1.0.
*
* @author Jan Luehe
*/
public class SetTimeZoneTag extends XpTagSupport {
// *********************************************************************
// Protected state
protected Object value; // 'value' attribute
// *********************************************************************
// Private state
private int scope; // 'scope' attribute
private String var; // 'var' attribute
// *********************************************************************
// Constructor and initialization
public SetTimeZoneTag() {
value = var = null;
scope = XpContext.PAGE_SCOPE;
}
public void setValue(Object value) {
this.value = value;
}
// *********************************************************************
// Tag attributes known at translation time
public void setScope(String scope) {
this.scope = getXpContext().resolveScope(scope);
}
public void setVar(String var) {
this.var = var;
}
// *********************************************************************
// Tag logic
public void doTag(XpOutput out) throws XpException, SAXException, ELException {
TimeZone timeZone = null;
if (value == null) {
timeZone = TimeZone.getTimeZone("GMT");
} else if (value instanceof String) {
if (((String) value).trim().equals("")) {
timeZone = TimeZone.getTimeZone("GMT");
} else {
timeZone = TimeZone.getTimeZone((String) value);
}
} else {
timeZone = (TimeZone) value;
}
if (var != null) {
getXpContext().setAttribute(var, timeZone, scope);
} else {
Config.set(getXpContext(), Config.FMT_TIME_ZONE, timeZone, scope);
}
// no contents, do not invoke body.
}
}