Java GUI Question - Page 2 - Overclock.net

mjoc13 · 03-04-08

to me it looks like your logging into the app and want to validate the entered info then continue to the reset of the app?

Since your already logged in, the context of the app is based on the user, so you do not need any info from that login screen. Simple get a handle to the login window and dispose. Assuming the actionPerformed is part of the login window, you can do something like

public void actionPerformed(ActionEvent evt) {
Frame window = null;
if (evt.getSource() == empLogin) {
employeeLogin emp = new employeeLogin();
emp.init();

window = new Frame("Employee");
window.add("Center", emp);
window.pack();
window.setVisible(false);

}

if (window != null) {
//context based on login window
this.dispose();
window.setVisible(true);
}
}

of course you may have to play around, as i haven't done swing in a couple years. Web services ftw

Keep us posted.

Sivsta · 03-04-08

Code:

this.dispose();

is not valid.

But yes, Once the user types in the correct login/password then it will (in theory) close the login screen and open the logged on screen.

mjoc13 · 03-06-08

Quote:

Originally Posted by Sivsta

Code:

this.dispose();

is not valid.

But yes, Once the user types in the correct login/password then it will (in theory) close the login screen and open the logged on screen.

(**getLoginWindow**).dispose();

that is why you need the context of the login window. Once you have it you can dispose it from the windows manager and it's ready for garbage collection.

ghell · 03-09-08

I am a bit rusty with AWT (why don't you use Swing, are you compiling using gcj or something) but you should be able to either create the new Frame and close the old one or get the content pane (whatever is the AWT equivalent) and replace its contents rather than creating a new window at all.

C-bro · 03-09-08

Quote:

Originally Posted by ghell

I am a bit rusty with AWT (why don't you use Swing, are you compiling using gcj or something) but you should be able to either create the new Frame and close the old one or get the content pane (whatever is the AWT equivalent) and replace its contents rather than creating a new window at all.

This is the route I'd take. I like Swing as well. You'd have your main JFrame declared, then just use a collection of JPanel.

Basically you'd just have

Code:

JFrame mainFrame;
JPanel login;
JPanel loggedIn;

// set up all your panels and frame properties

mainFrame.setContentPane(login);
mainFrame.pack();
//do stuff
if(login is successful)
mainFrame.setContentPane(loggedIn);
mainFrame.pack()

This way you keep your main window Frame the same at all times, and you're just swapping out different content panels. You can dispose of the content JPanels afterwards if need be. Be sure to call pack() after changing content panes to redraw the window appropriately.

ghell · 03-09-08

Another advantage of Swing is that you can ditch the ye olde

Code:

window.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }            
        });

and just use

Code:

myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

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Java GUI Question

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