Intercept window closing or quitting
I need to bring up an alert to potentially intercept user from closing a document window or quitting the application.
I found a sample code called DocWatch but it only seems to do notification, but I have no way to intercept the action and potentially stop the user action.
Any info is greatly appreciated.
pete
I found the CustomActionFilter in CS1 SDK actually have an example to handle the close command, so I copied the code into CS3 SDK and sure enough, it works!
// (3) filter the "File >> Close" menu
ActionFilterHelper filterCloseAction;
filterCloseAction.SetFilterActionID(kTrue, kCloseActionID, kCloseActionID, kTrue);
filterCloseAction.SetFilterActionName(kTrue, PMString("&Close"), PMString("test - Close"));
filterCloseAction.SetFilterComponentClass(kTrue, kDocumentComponentBoss, kCstAFltActionComponentBoss);
gActionFilterHelpers.push_back(filterCloseAction);
There's is an issue...the sample code does not intercept when the user clicked on the close box (this is on a Mac, the red button at the upper left corner).
In addition, the CS1 sample code does not work on the "Quit" command, either... I want to be able to abort the quit (base on a reply from a dialog of mine).
Thanks.
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It sounds as if iTunes is failing to launch properly on your Windows computer. You don’t mention what version of Windows you have, but one of these two articles should be useful to you -
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http://support.apple.com/kb/TS1717
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Thanks for using Apple Support Communities.
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i written a java program for swing form. the form having default window close button. if i click on close button i displayed a dialog contained Yes-No-Calcel . if i click on cancel it will be exit. How can i stop the window closing.
Look at this codes:
import java.awt.event.*;
import javax.swing.*;
public class ClosingFrame extends JFrame {
public ClosingFrame() {
super("Closing frame");
setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
int res = JOptionPane.showConfirmDialog(ClosingFrame.this, "Do you want to quit?", "Exit", JOptionPane.YES_NO_OPTION);
if (res == JOptionPane.YES_OPTION) {
System.out.println("Bye");
System.exit(0);
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How to trap client browser window closing thru JSP or servlets
How to trap client browser window closing thru JSP or servlets?
GunjanHi
Though some JavaScripts may provide you with solutions , yet there is no reliable way to detect the closing of the browser by the servlet. One way to achieve detection of user quitting a session is setting session timeouts ion the server side. This can be done either through the web.xml file or programatically by setting the session.setMaxInactiveInterval().
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Closing a Swing App with Window Closing Event With Dialogs On Close
A while back I started a thread discussing how to neatly close a Swing app using both the standard window "X" button and a custom action such as a File menu with an Exit menu item. Ultimately, I came to the conclusion that the cleanest solution in many cases is to use a default close operation of JFrame.EXIT_ON_CLOSE and in any custom actions manually fire a WindowEvent with WindowEvent.WINDOW_CLOSING. Using this strategy, both the "X" button and the custom action act in the same manner and can be successfully intercepted by listening for a window closing event if any cleanup is required; furthermore, the cleanup could use dialogs to prompt for user actions without any ill effects.
I did, however, encounter one oddity that I mentioned in the previous thread. A dialog launched through SwingUtilities.invokeLater in the cleanup method would cause the app to not shutdown. This is somewhat of an academic curiosity as I am not sure you would ever have a rational need to do this, but I thought it would be interesting to explore more fully. Here is a complete example that demonstrates; see what you think:
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class CloseByWindowClosingTest {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
launchGUI();
private static void launchGUI() {
final JFrame frame = new JFrame("Close By Window Closing Test");
JPanel panel = new JPanel();
panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
JButton button1 = new JButton("No Dialog Close");
JButton button2 = new JButton("Dialog On Close");
JButton button3 = new JButton("Invoke Later Dialog On Close");
button1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
postWindowClosingEvent(frame);
button2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(frame, "Test Dialog");
postWindowClosingEvent(frame);
button3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
JOptionPane.showMessageDialog(frame, "Test Dialog");
postWindowClosingEvent(frame);
panel.add(button1);
panel.add(button2);
panel.add(button3);
frame.setContentPane(panel);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent event) {
System.out.println("Received Window Closing Event");
frame.setVisible(true);
private static void postWindowClosingEvent(JFrame frame) {
WindowEvent windowClosingEvent = new WindowEvent(frame, WindowEvent.WINDOW_CLOSING);
frame.getToolkit().getSystemEventQueue().postEvent(windowClosingEvent);
}An additional note not in the example -- if in the button 3 scenario you were to put the window closing event posting inside the invoke later, the app then again closes. However, as implemented, what is it that causes button 3 to not result in the application closing?
Edited by: Skotty on Aug 11, 2009 5:08 PM -- Modified example code -- added the WindowAdapter to the frame as a window listener to show which buttons cause listeners to receive the window closing event.I'm not sure I understand why any "cleanup" code would need to use SwingUtilities.invokeLater() to do anything. Assuming this "cleanup method" was called in response to a WindowEvent, it's already being called on the EDT.
IIRC, my approach to this "problem" was to set the JFrame to DO_NOTHING_ON_CLOSE. I create a "doExit()" method that does any cleanup and exits the application (and possibly allows the user to cancel the app closing, if so desired). Then I create a WindowListener that calls doExit() on windowClosingEvents, and have my "exit action" call doExit() as well. Seems to work fine for me. -
How to tell embedded jinitator applet is still running when window closed
Hello, we are trying to accomplish the same thing that is mentioned in this post from Metalink. I've searched for a solution and hope someone here can help. Instead of restating the issue I think David Wilson does a good job of explaining what is needed. Can anyone please suggest a possible solution?
From: David Wilton 07-Oct-05 01:08
Subject: How to tell embedded jinitator applet is still running when window closed
How to tell embedded jinitator applet is still running when window closed
Hi,
We run an oracle 10g forms application through 9iAS over an intranet. All users are running windows 2000 professional.
We run separate frame = true but I would like to switch to separate frame = false
With separate frame = true if the user clicks the outer windows "X" close button (forms mdi window) the user is prompted to save changes before the application ends.
BUT
when using separate frame = false
If the user clicks the upper window "X" button (no longer form mdi window but regular browser window) the window and application is abruptly closed.
I'm interested in using a onbeforeunload function to confirm if the user wants to close the window. This would be placed in the basejini.htm file. This could always ask if the user wants to exit or not. If they click OK then the window closes but if they click "Cancel" you are returned to the forms application exactly where you left. something like event.returnvalue="do you really want to exit?";
However if the user exited using the normal exit form method then the applet is already closed before the onbeforeunoad event fires and there is nothing to go back to and I want the window to close automatically. This is accomplished using close.html file in post forms trigger.
So what I want and what I think many may also want is the check if the embedded applet is still running and if so prompt the user to return to the application or continue to close. Of course If the applet is no longer running then just close because there is no reason confirm closing anymore.
Does anyone have a html/JavaScript solution that can be placed in the jinitiator.htm file? or similar?
Thank you
David
[email protected]
From: Andrew Lenton 07-Oct-05 08:58
Subject: Re : How to tell embedded jinitator applet is still running when window closed
I don't know if this is exactly what you are after but you can add the following to the top of your basejini.htm file and it should prompt the user before exiting the IE window.
<BODY %HTMLbodyAttrs%>
%HTMLbeforeForm%
<SCRIPT>
<!--
window.onbeforeunload = unloadApplet;
function unloadApplet(){
message = "Warning! Please exit the Java Applet prior to
exiting the browser"
return message;
//-->
</SCRIPT>
From: Oracle, mohammed pasha 07-Oct-05 09:55
Subject: Re : How to tell embedded jinitator applet is still running when window closed
David,
Well I could not understand your complete requirement.
Refer to Note.201481.1 How to Close the Browser Window When Closing Forms And How to Simulate SeparateFrame By Javascript
Note.115905.1 How to Close Browser Window When Closing Webforms Applet
Kind Regards,
Anwar
From: David Wilton 07-Oct-05 14:37
Subject: Re : How to tell embedded jinitator applet is still running when window closed
Thank you for your reply and yes you did not understand my question fully.
Sorry if this is a long reply
I am able to close the browser window using information in notes 115905.1 and 201481.1, this is not the issue. We implemented this several years ago. It is workable for both separate frame = true or false.
It is most important to not allow the user to end their forms application by closing the windows browser, they must close using normal form exit commands.
What I want is to have separate frame = false, the big drawback to this option is the user can exit the application and bypass all forms code by pressing the windows "X" close button. This is why we need the code as just provided by Andrew Lenton above in this thread.
BUT Andrew's code will always prompt the user before closing the window and I do not want that. I want the user to be prompted only under scenario 2 listed below.
Here's the 2 case scenario for exiting the application.
1. If the user closes properly and uses exit form which fires all normal form triggers including post_form with it's call to close.html file.
All uncommitted changes are saved or rollback and the users session is ended normally both on the database and in the application server.
All browser windows will close, great all is good. And without Andrew's code the window will close but with Andrew's code the user will be prompted to close or not, if they select Cancel the window will remain but the applet has already ended so why prompt? ...This is what I want to avoid.
2. In the forms app. if the user clicks the windows "X" close button with uncommitted changes. The browser just closes the changes are rollback without prompting the user to save. The users sessions are now lost and still running in the database and application server until they are timed out.
If I use Andrew's code then the user will be prompted to continue to close or go back, if they click Cancel to go back then focus returns to the forms application and the user can continue to work. If the user clicks OK then the window closes and unfortunately their sessions are still lost until timed out.
So what I desire is to add to Andrew's code to check if the embedded applet is still running and prompt the user to close or not accordingly.
Something like:
Basejini.htm like
</HEAD>
<SCRIPT LANGUAGE="JavaScript">
function maximizeWindow()
window.moveTo(0,0);
window.resizeTo(screen.availWidth,screen.availHeight);
function confirm(){
If(document.embeddedapplet.closed())
Win.opener = self;
win.close();
Else if
event.returnValue = "Closing Forms Application. OK to continue?";
</SCRIPT>
<BODY %HTMLbodyAttrs%, onload="maximizeWindow()", onbeforeunload="confirm()">
%HTMLbeforeForm%
I hope this explains my requirements.
David
From: Oracle, Evelene Raechel 10-Oct-05 06:45
Subject: Re : How to tell embedded jinitator applet is still running when window closed
Hi,
Note.199928.1 How to Alert User on Closing Client's Browser Window in Webforms
Regards,
Rachel
From: David Wilton 11-Oct-05 17:40
Subject: Re : How to tell embedded jinitator applet is still running when window closed
I'm sorry this is not helpful at all.
Note 199928.1 is only an alert which does not stop the closing of the window and still displays as an alert if the user does close properly using exit form ... so why would you want to display the alert then?
This is exaclty what I do not want and why I want to determine if the applet is still running before displaying any kind of message.
David
From: Oracle, Evelene Raechel 17-Oct-05 12:23
Subject: Re : How to tell embedded jinitator applet is still running when window closed
Closing thread.
Thanks,Hello,
I had the same issue last year - wanting to provide a warning on closing the browser, but only if the Forms session is still running. The approach I took is described below, see also the thread where I originally posted this at Closing brower window
Hi there,I've had a similar requirement - or rather, the two conflicting requirements: to warn when the browser is being closed, but for the app to be able to close the browser without a warning being fired.
To always provide a warning when someone (the user or the Forms app) tries to go to a different page (e.g. your close.htm), use Javascript like:
function confirmExit(){
if(appletRunning==true) {
msg="Closing this window or navigating to another page will end your SomeGreatApp session.";
window.event.returnValue=msg;
And make a call to confirmExit() in the onBeforeUnload event of your main page.
You'll notice I first check an 'appletRunning' variable before displaying the warning. This Javascript variable is set to true by my app when it starts up, using an embedded Javabean that calls out to Javascript. Once that variable is set to true, then the warning will be displayed if the user tries to shut the browser by clicking on the 'x' button, or to go to a different URL.
When my app is shutting down, it uses the same Javabean to set appletRunning back to false. It then navigates to a close.htm - which will be done without a warning being displayed.
See Re: How can a Javabean call Javascript function of the basejpi.html?? for example code on how to call Javascript from a bean embedded in your Forms app.
Hope these ideas help you out, it's worked for me (so far, anyway!!)
James -
Data changes saved when pop-up window closed instead of using Save button/action.
We encountered an odd application behavior and we cannot tell if this is standard functionality or not. When a spec is an a workflow step that is Signature Request, the Requestee can open a link to view the spec. When the user also has edit permissions, they get the edit icon in the popup window. We had a user that editted the spec then decided not to save the changes, so used the Close (red ex on popup) instead of the Action: Cancel button on the application menu. User expected that changes made would not be saved. It turns out that clicking the window closed save the modifications without any warning. User expected Close to work like Cancel instead of Save. Is this normal application behavior?
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I'm having problems catching windowClosing() events from a JFrame (just doesn't get to my event listener it would seem!).
I register and setup a window listener in the constructor of my JFrame class. Prior to this I set the default close operation as DO_NOTHING_ON_CLOSE (as you're suppose to if tyou want to handle window closing events).
When user clicks on x (window terminate) button (in WIN systems), nothing is dispatched to my event listener. Any ideas?
Extract from constructor:
setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
addWindowListener(new MainWindowListener(this));
MainWindowListener looks as follows (EDImemConvert extends JFrame):
class MainWindowListener extends WindowAdapter
private EDImemConvert f;
public MainWindowListener(EDImemConvert f)
this.f = f;
public void windowClosing(WindowEvent e)
System.out.println("gets here...");
f.ReturnResources();
f.dispose();
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import java.awt.event.*;
import javax.swing.*;
public class Test extends JFrame {
public Test() {
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent we) { System.exit(0); }
setSize(300,300);
setVisible(true);
public static void main(String args[]) { new Test(); }
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I use vb to call java application through batch file (.bat) to connect to another java app to send message. Since the java application is executing in command prompt window, if the window accidentally closed, is it possible to close the connection, terminate loop, dispose objects properly during window closing? most importantly, the program at the other side knows the the connection is closed and message stop sending by the java app? Any suggestion?
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Otherwise you would need to somehow keep track of all the open windows in your application and in the windowClosing method you would check to see how many windows are open currently. If the window being closed is the only window open at that time, call System.exit(0). Else don't call it.
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I have had this problem over a year now. We have 3 Macs in the house - two iMacs and my MacBook Pro. Both the iMacs have screensharing enabled in their System Preferences. On my MBP, in the Finder window sidebar I select one of the other mac to view. I get the usual screensharing login window, I enter the info. and hit connect and it never connects. The window will never quit neither can I dismiss the window even by quitting screen sharing app. I have not been able to find the exact process that is responsible for this window in the Activity Monitor so I could atleast terminate the process there. The only way I could then get out of the mess is to log out and then log in. Here's a little caveat. If when the login window is sitting there stubbornly trying to log in and I have quit the Screensharing app, I go back to the Finder window, select the same Mac and hit Share Screen button, it will immediately connect. But the log in window will still sit there and there is no way I can dismiss it other than to log out and log in. - It's really annoying I have not been able to figure out as to why this happens. Anyone know about this? It's been about 15 minutes now, and the window is still there. It doesn't time out either! Well, I got to go log out now (after I post this post)
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After insert employer information in assignment window (GOSI Details saudi arabia) the window closed suddenly.
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