/*
* SelectEPersonTag
*
* Version: $Revision: 3705 $
*
* Date: $Date: 2009-04-11 17:02:24 +0000 (Sat, 11 Apr 2009) $
*
* Copyright (c) 2002, 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.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.jstl.fmt.LocaleSupport;
import javax.servlet.jsp.tagext.TagSupport;
import org.dspace.eperson.Group;
/**
* <P>Tag for producing an e-person select widget in a form. Somewhat
* analogous to the HTML SELECT element. An input
* field is produced with a button which pops up a window from which
* e-people can be selected. Selected e-epeople are added to the field
* in the form. If the selector is for multiple e-people, a 'remove
* selected from list' button is also added.</P>
*
* <P>On any form that has a selecteperson tag (only one allowed per page),
* you need to include the following Javascript code on all of the submit
* buttons, to ensure that the e-people IDs are posted and that the popup
* window is closed:</P>
*
* <P><code>onclick="javascript:finishEPerson();"</code></P>
*
* @author Robert Tansley
* @version $Revision: 3705 $
*/
public class SelectGroupTag extends TagSupport
{
/** Multiple groups? */
private boolean multiple;
/** Which groups are initially in the list? */
private Group[] groups;
public SelectGroupTag()
{
super();
}
/**
* Setter for multiple attribute
*
* @param s attribute from JSP
*/
public void setMultiple(String s)
{
if (s != null && (s.equalsIgnoreCase("yes") || s.equalsIgnoreCase("true")))
{
multiple = true;
}
else
{
multiple = false;
}
}
/**
* Setter for groups in list
*
* @param e attribute from JSP
*/
public void setSelected(Object g)
{
if (g instanceof Group)
{
groups = new Group[1];
groups[0] = (Group) g;
}
else if(g instanceof Group[])
{
groups = (Group[]) g;
}
}
public void release()
{
multiple = false;
groups = null;
}
public int doStartTag()
throws JspException
{
try
{
JspWriter out = pageContext.getOut();
HttpServletRequest req = (HttpServletRequest) pageContext.getRequest();
out.print("<table><tr><td colspan=\"2\" align=\"center\"><select multiple=\"multiple\" name=\"group_ids\" size=\"");
out.print(multiple ? "10" : "1");
out.println("\">");
//ensure that if no group is selected that a blank option is displayed - xhtml compliance
if (groups == null || groups.length == 0)
{
out.print("<option value=\"\"> </option>");
}
if (groups != null)
{
for (int i = 0; i < groups.length; i++)
{
out.print("<option value=\"" + groups[i].getID() + "\">");
out.print(groups[i].getName() + " (" + groups[i].getID() + ")");
out.println("</option>");
}
}
out.print("</select></td>");
if (multiple)
{
out.print("</tr><tr><td width=\"50%\" align=\"center\">");
}
else
{
out.print("<td>");
}
String p = (multiple ?
LocaleSupport.getLocalizedMessage(pageContext,
"org.dspace.app.webui.jsptag.SelectGroupTag.selectGroups")
: LocaleSupport.getLocalizedMessage(pageContext,
"org.dspace.app.webui.jsptag.SelectGroupTag.selectGroup") );
out.print("<input type=\"button\" value=\"" + p
+ "\" onclick=\"javascript:popup_window('"
+ req.getContextPath() + "/tools/group-select-list?multiple="
+ multiple + "', 'group_popup');\" />");
if (multiple)
{
out.print("</td><td width=\"50%\" align=\"center\">");
out.print("<input type=\"button\" value=\""
+ LocaleSupport.getLocalizedMessage(pageContext,
"org.dspace.app.webui.jsptag.SelectGroupTag.removeSelected")
+ "\" onclick=\"javascript:removeSelected(window.document.epersongroup.group_ids);\"/>");
}
out.println("</td></tr></table>");
}
catch (IOException ie)
{
throw new JspException(ie);
}
return SKIP_BODY;
}
}