/** * The contents of this file are subject to the license and copyright * detailed in the LICENSE and NOTICE files at the root of the source * tree and available online at * * http://www.dspace.org/license/ */ 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.apache.commons.lang.ArrayUtils; 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 $Revision$ */ public class SelectGroupTag extends TagSupport { /** Multiple groups? */ private boolean multiple; /** Which groups are initially in the list? */ private transient Group[] groups; private static final long serialVersionUID = -3330389128849427302L; 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 g 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[])ArrayUtils.clone((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; } }