Help! -How Launch Jframe from Jsp so modal
[nobr]Hello,
I'm trying to launch a JFrame from a Jsp page but the code either continues without showing the JFrame though a validation check indicates the frame isVisible OR the page never loads on call. For the code shown below, the jsp page first displays a button to launch the frame. On clicking the button the same jsp is called to launch the frame. On clicking the button however the page appears to keep loading without ever finishing. All help is appreciated!!
my Jsp code is as follows:
<%@ page language="java" contentType="text/html;charset=UTF-8" import="com.plumtree.remote.portlet.*,edu.columbia.iri.app.projects.*" %>
<%@page import="javax.swing.*" %>
<%
// Prefs page for ProjectsPortlet. Let the user select default projects to list.
%>
<%
//Check if the form was submitted
if(request.getParameter("Set")!=null && request.getParameter("Set").equals("1111"))
{
request.setAttribute("action","prefDisplay");
request.setAttribute("orderby","title");
ServletContext jc = getServletContext();
DualListBox dual =new DualListBox(request,(String)jc.getAttribute("db.driver"), (String)jc.getAttribute("db.connectionstring"),"title");
if(f.isShowing()){
System.out.println("done breathing in WPg" + request.getAttribute("ProjectIDs").toString());//}
}
elseif (request.getParameter("action")!=null && request.getParameter("action").equalsIgnoreCase("urlDisplay"))
{
request.setAttribute("action","urlDisplay");
request.setAttribute("orderby","title");
//Send to ProjectsController
request.getRequestDispatcher("pc").forward(request, response);
}
else{
%>
<html>
<head>
<title>Set Project Preferences Button Page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="set projects">
<meta http-equiv="description" content="Displays Button to Set Project Preferences">
<!--<link rel="stylesheet" type="text/css" href="styles.css">-->
</head>
<body>
<br>
Click on the button below to select projectsfor display.
<br>
<form name="setform" id="setform" action="SetProjects.jsp">
<input type="hidden" value="1111" name="Set">
<input type="submit" value="Set Projects">
</form>
</body>
</html>
<%
}
%>
The class being called to launch the frame, called DualListBox.java is as follows:
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.lang.reflect.InvocationTargetException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.SortedSet;
import java.util.TreeSet;
import javax.servlet.http.HttpServletRequest;
import javax.swing.AbstractListModel;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ListCellRenderer;
import javax.swing.ListModel;
publicclass DualListBoxextends JPanel{
/**
*
*/
privatestaticfinallong serialVersionUID = 1;
privatestaticfinal Insets EMPTY_INSETS =new Insets(0, 0, 0, 0);
privatestaticfinal String ADD_BUTTON_LABEL ="Add >>";
privatestaticfinal String REMOVE_BUTTON_LABEL ="<< Remove";
privatestaticfinal String DONE_BUTTON_LABEL ="Submit!";
privatestaticfinal String DEFAULT_SOURCE_CHOICE_LABEL ="Available Projects";
privatestaticfinal String DEFAULT_DEST_CHOICE_LABEL ="Your Selections";
private String orderby, mydriver, connectionString;
private JLabel sourceLabel;
private JList sourceList;
private SortedListModel sourceListModel;
private JList destList;
private String chosenprojects;
private SortedListModel destListModel;
private JLabel destLabel;
private JButton addButton;
private JButton removeButton;
private JButton doneButton;
private DatabaseHelper dh;
protected HttpServletRequest request;
protected JFrame f;
protected JDialog jd;
public DualListBox(HttpServletRequest req, String driver, String connection, String ordering){
System.out.println("In DualList Setup");
request =req;
orderby =ordering;
connectionString = connection;
mydriver = driver;
f =new JFrame("Projects List Selector");
jd =new JDialog(f,true);
jd.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
System.out.println("B4 initscreen");
initScreen();
System.out.println("After initscreen");
String[] DBprojects = this.dbCall();
System.out.println("After DB Call");
this.addSourceElements( DBprojects );
System.out.println("Filled screen");
jd.getContentPane().add(this, BorderLayout.CENTER);
//f.getContentPane().add(jd, BorderLayout.CENTER);
jd.setSize(800, 600);
System.out.println("OK1");
//jd.pack();
System.out.println("OK2");
jd.setVisible(true);
System.out.println("OK3");
//Runnable runner = new FrameShower(jd);hangs cout;nullpter with
//EventQueue.invokeLater(runner);
}
public String getSourceChoicesTitle(){
return sourceLabel.getText();
}
public String chosenprojects(){
return chosenprojects;
}
public JFrame getFrame(){
return f;
}
publicvoid setSourceChoicesTitle(String newValue){
sourceLabel.setText(newValue);
}
public String getDestinationChoicesTitle(){
return destLabel.getText();
}
publicvoid setDestinationChoicesTitle(String newValue){
destLabel.setText(newValue);
}
publicvoid clearSourceListModel(){
sourceListModel.clear();
}
publicvoid clearDestinationListModel(){
destListModel.clear();
}
publicvoid addSourceElements(ListModel newValue){
fillListModel(sourceListModel, newValue);
}
publicvoid setSourceElements(ListModel newValue){
clearSourceListModel();
addSourceElements(newValue);
}
publicvoid addDestinationElements(ListModel newValue){
fillListModel(destListModel, newValue);
}
private String[] dbCall(){
if(dh==null)
dh =new DatabaseHelper(mydriver, connectionString);
PreparedStatement ps =null;
ResultSet rs =null;
ArrayList<String>children =new ArrayList<String>();
ArrayList<String[]>tree =new ArrayList<String[]>();
if(orderby==null || orderby.equals("")){
orderby ="region";
}
String query ="select title,id from projects";// order by " + orderby;
System.out.println(query);
//System.out.println(orderby);
try{
Connection conn =dh.getConnection();
ps = conn.prepareStatement(query);
rs = ps.executeQuery();
while (rs.next()){
children.add(new String(rs.getString(1)));
System.out.println(rs.getString(1));
tree.add(new String[]{rs.getString(1),rs.getString(2)});
}
request.setAttribute("ResultTree",tree);
return (String[])children.toArray(new String[children.size()]);
}catch (SQLException e){
thrownew RuntimeException(e);
}finally{
try{
if (null != rs) rs.close();
}catch (SQLException e){
;
}
try{
if (null != ps) ps.close();
}catch (SQLException e){
;
}
}
}
privatevoid fillListModel(SortedListModel model, ListModel newValues){
int size = newValues.getSize();
for (int i = 0; i < size; i++){
model.add(newValues.getElementAt(i));
}
}
publicvoid addSourceElements(Object newValue[]){
fillListModel(sourceListModel, newValue);
}
publicvoid setSourceElements(Object newValue[]){
clearSourceListModel();
addSourceElements(newValue);
}
publicvoid addDestinationElements(Object newValue[]){
fillListModel(destListModel, newValue);
}
privatevoid fillListModel(SortedListModel model, Object newValues[]){
model.addAll(newValues);
}
public Iterator sourceIterator(){
return sourceListModel.iterator();
}
public Iterator destinationIterator(){
return destListModel.iterator();
}
publicvoid setSourceCellRenderer(ListCellRenderer newValue){
sourceList.setCellRenderer(newValue);
}
public ListCellRenderer getSourceCellRenderer(){
return sourceList.getCellRenderer();
}
publicvoid setDestinationCellRenderer(ListCellRenderer newValue){
destList.setCellRenderer(newValue);
}
public ListCellRenderer getDestinationCellRenderer(){
return destList.getCellRenderer();
}
publicvoid setVisibleRowCount(int newValue){
sourceList.setVisibleRowCount(newValue);
destList.setVisibleRowCount(newValue);
}
publicint getVisibleRowCount(){
return sourceList.getVisibleRowCount();
}
publicvoid setSelectionBackground(Color newValue){
sourceList.setSelectionBackground(newValue);
destList.setSelectionBackground(newValue);
}
public Color getSelectionBackground(){
return sourceList.getSelectionBackground();
}
publicvoid setSelectionForeground(Color newValue){
sourceList.setSelectionForeground(newValue);
destList.setSelectionForeground(newValue);
}
public Color getSelectionForeground(){
return sourceList.getSelectionForeground();
}
public String getProjects(){
return chosenprojects;
}
privatevoid clearSourceSelected(){
Object selected[] = sourceList.getSelectedValues();
for (int i = selected.length - 1; i >= 0; --i){
sourceListModel.removeElement(selected[i]);
}
sourceList.getSelectionModel().clearSelection();
}
privatevoid clearDestinationSelected(){
Object selected[] = destList.getSelectedValues();
for (int i = selected.length - 1; i >= 0; --i){
destListModel.removeElement(selected[i]);
}
destList.getSelectionModel().clearSelection();
}
privatevoid initScreen(){
setBorder(BorderFactory.createEtchedBorder());
setLayout(new GridBagLayout());
sourceLabel =new JLabel(DEFAULT_SOURCE_CHOICE_LABEL);
sourceListModel =new SortedListModel();
sourceList =new JList(sourceListModel);
add(sourceLabel,new GridBagConstraints(0, 0, 1, 1, 0, 0,
GridBagConstraints.CENTER, GridBagConstraints.NONE,
EMPTY_INSETS, 0, 0));
add(new JScrollPane(sourceList),new GridBagConstraints(0, 1, 1, 5, .5,
1, GridBagConstraints.CENTER, GridBagConstraints.BOTH,
EMPTY_INSETS, 0, 0));
addButton =new JButton(ADD_BUTTON_LABEL);
add(addButton,new GridBagConstraints(1, 2, 1, 2, 0, .25,
GridBagConstraints.CENTER, GridBagConstraints.NONE,
EMPTY_INSETS, 0, 0));
addButton.addActionListener(new AddListener());
removeButton =new JButton(REMOVE_BUTTON_LABEL);
add(removeButton,new GridBagConstraints(1, 4, 1, 2, 0, .25,
GridBagConstraints.CENTER, GridBagConstraints.NONE,new Insets(
0, 5, 0, 5), 0, 0));
removeButton.addActionListener(new RemoveListener());
doneButton =new JButton(DONE_BUTTON_LABEL);
add(doneButton,new GridBagConstraints(1, 6, 1, 2, 0, .25,
GridBagConstraints.CENTER, GridBagConstraints.NONE,new Insets(
0, 10, 0, 10), 0, 0));
doneButton.addActionListener(new DoneListener());
f.addWindowListener(new java.awt.event.WindowAdapter(){
publicvoid windowClosing(WindowEvent winEvt){
//could set to null here to force use of Done button only
chosenprojects = destList.getSelectedValues().toString();
request.setAttribute("ProjectIDs", destList.getSelectedValues().toString());
System.exit(0);
}
});
destLabel =new JLabel(DEFAULT_DEST_CHOICE_LABEL);
destListModel =new SortedListModel();
destList =new JList(destListModel);
add(destLabel,new GridBagConstraints(2, 0, 1, 1, 0, 0,
GridBagConstraints.CENTER, GridBagConstraints.NONE,
EMPTY_INSETS, 0, 0));
add(new JScrollPane(destList),new GridBagConstraints(2, 1, 1, 5, .5,
1.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH,
EMPTY_INSETS, 0, 0));
}
privateclass AddListenerimplements ActionListener{
publicvoid actionPerformed(ActionEvent e){
Object selected[] = sourceList.getSelectedValues();
addDestinationElements(selected);
clearSourceSelected();
}
}
privateclass RemoveListenerimplements ActionListener{
publicvoid actionPerformed(ActionEvent e){
Object selected[] = destList.getSelectedValues();
addSourceElements(selected);
clearDestinationSelected();
}
}
privateclass DoneListenerimplements ActionListener{
publicvoid actionPerformed(ActionEvent e){
chosenprojects = destList.getSelectedValues().toString();
request.setAttribute("ProjectIDs", destList.getSelectedValues().toString());
System.exit(0);
}
}
}
class FrameShowerimplements Runnable{
final JDialog frame;
public FrameShower(JDialog frame){
this.frame = frame;
}
publicvoid run(){
System.out.println("B4 make visible");
frame.setVisible(true);
System.out.println("Made screen visible");
}
}
class SortedListModelextends AbstractListModel{
/**
*
*/
privatestaticfinallong serialVersionUID = 8777627817685130496;
SortedSet model;
public SortedListModel(){
model =new TreeSet();
}
publicint getSize(){
return model.size();
}
public Object getElementAt(int index){
return model.toArray()[index];
}
publicvoid add(Object element){
if (model.add(element)){
fireContentsChanged(this, 0, getSize());
}
}
publicvoid addAll(Object elements[]){
Collection c = Arrays.asList(elements);
model.addAll(c);
fireContentsChanged(this, 0, getSize());
}
publicvoid clear(){
model.clear();
fireContentsChanged(this, 0, getSize());
}
publicboolean contains(Object element){
return model.contains(element);
}
public Object firstElement(){
return model.first();
}
public Iterator iterator(){
return model.iterator();
}
public Object lastElement(){
return model.last();
}
publicboolean removeElement(Object element){
boolean removed = model.remove(element);
if (removed){
fireContentsChanged(this, 0, getSize());
}
return removed;
}
}
[/nobr]
