/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program 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 version 2 of the License.
*
* This program 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.enterprise.gui.legacy.taglib;
import java.io.IOException;
import java.text.SimpleDateFormat;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import org.rhq.core.clientapi.util.units.DateFormatter.DateSpecifics;
import org.rhq.core.clientapi.util.units.FormattedNumber;
import org.rhq.core.clientapi.util.units.ScaleConstants;
import org.rhq.core.clientapi.util.units.UnitNumber;
import org.rhq.core.clientapi.util.units.UnitsConstants;
import org.rhq.core.clientapi.util.units.UnitsFormat;
import org.rhq.enterprise.gui.legacy.StringConstants;
import org.rhq.enterprise.gui.legacy.util.RequestUtils;
/**
* Tag that will take a value that is a long, or a runtime expression, and output a date representation of that long.
*/
public class DateFormatter extends VarSetterBaseTag {
/**
* A string which contains the long, or the expression, we hope to convert into a Long, and format as a date.
*/
private Long value = null;
/**
* Holds value of property time.
*/
private Boolean time = Boolean.FALSE;
/**
* Holds value of property showTime.
*/
private Boolean showTime = Boolean.TRUE;
public DateFormatter() {
super();
}
public Long getValue() {
return this.value;
}
public void setValue(Long v) {
this.value = v;
}
/**
* Utility method for formatting dates. XXX Might want to pass in a dateFmt'r if need more than 1 format. Right now,
* using simple "time" flag in tag to decide if should format as a time.
*
* @param date The long to convert to a date.
* @param asTime Whether to format this date as a time.
*/
private String formatDate(Long date) {
UnitsConstants unit = time.booleanValue() ? UnitsConstants.UNIT_DURATION : UnitsConstants.UNIT_DATE;
String key = StringConstants.UNIT_FORMAT_PREFIX_KEY + "epoch-millis";
if (!showTime.booleanValue()) {
key += ".dateonly";
}
String formatString = RequestUtils.message((HttpServletRequest) pageContext.getRequest(), key);
DateSpecifics specs = new DateSpecifics();
specs.setDateFormat(new SimpleDateFormat(formatString));
FormattedNumber fmtd = UnitsFormat.format(new UnitNumber(date.doubleValue(), unit, ScaleConstants.SCALE_MILLI),
pageContext.getRequest().getLocale(), specs);
return fmtd.toString();
}
/**
* This evaluates <em>value</em> as a struts expression, then outputs the resulting string to the <em>
* pageContext</em>'s out.
*/
public int doStartTag() throws JspException {
Long newDate;
newDate = (value == null) ? System.currentTimeMillis() : value;
String d = formatDate(newDate);
if (getVar() != null) {
setScopedVariable(d);
} else {
try {
pageContext.getOut().write(d);
} catch (IOException ioe) {
throw new JspException(getClass().getName() + " Could not output date.");
}
}
return SKIP_BODY;
}
/**
* Reset the values of the tag.
*/
public void release() {
value = null;
}
/**
* Getter for property time.
*
* @return Value of property time.
*/
public Boolean getTime() {
return this.time;
}
/**
* Setter for property time.
*
* @param time New value of property time.
*/
public void setTime(Boolean time) {
this.time = time;
}
/**
* Getter for property showTime.
*
* @return Value of property showTime.
*/
public Boolean getShowTime() {
return this.showTime;
}
/**
* Setter for property showTime.
*
* @param time New value of property showTime.
*/
public void setShowTime(Boolean showTime) {
this.showTime = showTime;
}
}