datetag.java

dspace 用j2ee架构的一个数字图书馆.开源程序

/*
 * DateTag.java
 *
 * Version: $Revision: 1.7 $
 *
 * Date: $Date: 2005/07/29 15:56:07 $
 *
 * Copyright (c) 2002-2005, Hewlett-Packard Company and Massachusetts
 * Institute of Technology.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * - Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * - Neither the name of the Hewlett-Packard Company nor the name of the
 * Massachusetts Institute of Technology nor the names of their
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */
package org.dspace.app.webui.jsptag;

import java.io.IOException;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;

import org.dspace.app.webui.util.UIUtil;
import org.dspace.content.DCDate;

/**
 * Date rendering tag for DCDates. Takes two parameter - "date", a DCDate, and
 * "notime", which, if present, means the date is rendered without the time
 * 
 * @author Robert Tansley
 * @version $Revision: 1.7 $
 */
public class DateTag extends TagSupport
{
    /** The date to display */
    private DCDate date;

    /** Display the time? */
    private boolean displayTime = true;

    /**
     * Get the date
     * 
     * @return the date to display
     */
    public DCDate getDate()
    {
        return date;
    }

    /**
     * Set the date
     * 
     * @param d
     *            the date to display
     */
    public void setDate(DCDate d)
    {
        date = d;
    }

    /**
     * Get the "don't display the time" flag
     * 
     * @return the date to display
     */
    public String getNotime()
    {
        // Note inverse of internal flag
        return (displayTime ? "false" : "true");
    }

    /**
     * Set the "don't display the time" flag
     * 
     * @param dummy
     *            can be anything - always sets the flag if present
     */
    public void setNotime(String dummy)
    {
        displayTime = false;
    }

    public int doStartTag() throws JspException
    {
        String toDisplay = UIUtil.displayDate(date, displayTime, true);

        try
        {
            pageContext.getOut().print(toDisplay);
        }
        catch (IOException ie)
        {
            throw new JspException(ie);
        }

        return SKIP_BODY;
    }
}