Question

JPanel & JFrame

Asked by: louai

Hello,

I made an Application that uses a JFrame that contains several JPanels. In addtion my application requires a wizard-like operaton, I did that by removing and adding JPanels and components as needed.

But it turns out malfunction after some add's and remove's, do you have an idea about that.

Thanks

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Asked On
2003-01-12 at 07:48:10ID20453386
Tags

jframe

,

jpanel

Topics

Java Programming Language

,

Java AWT & Swing

Participating Experts
7
Points
50
Comments
14

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Answers

 

by: CEHJPosted on 2003-01-12 at 07:51:16ID: 7711800

I wouldn't do the wizard like that, but would be inclined to show a 'pipeline' of JDialogs.

 

by: conickPosted on 2003-01-12 at 08:55:17ID: 7712053

Generally, I would use a pipeline of dialogs as well.

However, in some cases switching panels seems to be more user friendly. Some of these cases may be:
1) When the panels are fairly complex and going back may be common.
2) When you want to show the user a list of the steps and highlight which step your on.

However, adding and removing the panels of their parent can get messy. You may want to consider using CardLayout to store and switch them. When you move forward you create the new panel and add/show it in the cardlayout. If the user goes back, you can simply show the previous panel. When using this type of wizard, I would usually show all steps to the left and highlight which step the user is on.

There are advantages and disadvantages for both the multiple dialog solution and the panel switching solution. Determine which one is best for you.

As for what might be wrong in your program, we would only be guessing. But adding/removing components from their parents can get very messy. I'd suggest to move to either multiple dialogs or cardlayout.

 

by: objectsPosted on 2003-01-12 at 11:39:48ID: 7712618

> after some add's and remove's

after you have added/removed components to the container, you need to call revalidate() method on the container to layout components.

 

by: cozminPosted on 2003-01-13 at 00:12:31ID: 7715550

Did you consider adding all your JPanels to a JPanel with a CardLayout?(and adding this last JPanel to the JFrame?) You can easyly switch between panels, I don`t know of any memory problems with this and depending on the length of your wizard this might be the best choice.
Cheers!

 

by: heyhey_Posted on 2003-01-13 at 04:39:01ID: 7716729

> adding all your JPanels to a JPanel with a CardLayout?

that is the best solution

 

by: CEHJPosted on 2003-01-13 at 04:44:59ID: 7716763

agree

 

by: louaiPosted on 2003-01-13 at 20:51:08ID: 7722801

First I would like to thank you all guys,

My interface will looks like the one in the following URL

http://developer.java.sun.com/developer/onlineTraining/new2java/divelog/part2/page3.jsp

Is possible to use the CardLayout in place of the BorderLayout

Thanks

Louai

 

by: objectsPosted on 2003-01-13 at 20:58:58ID: 7722834

> Is possible to use the CardLayout in place of the BorderLayout

No, you would need to add your panel(s) to a new panel (using CardLayout) and then add this panel to your (borderlayout) panel.

 

by: louaiPosted on 2003-01-13 at 21:37:37ID: 7722967

Moreover, I need the application to change view not only using the TabbedPnae, I need it to do so on Buttons preses.

Actually I have nor  problem with TabbedPane but the problem comes when I pressed the buttons.

 

by: objectsPosted on 2003-01-13 at 21:46:53ID: 7723005

use:

tabs.setSelectedIndex(tabindex);

 

by: louaiPosted on 2003-01-13 at 21:47:28ID: 7723006

Finally I got it, the updateUI works

Great My friends, thanks alot

 

by: objectsPosted on 2003-01-13 at 21:57:45ID: 7723041

:-)

 

by: CleanupPingPosted on 2003-08-03 at 05:12:36ID: 9060056

louai:
This old question needs to be finalized -- accept an answer, split points, or get a refund.  For information on your options, please click here-> http:/help/closing.jsp#1
EXPERTS:
Post your closing recommendations!  No comment means you don't care.

 

by: sfotexPosted on 2003-09-16 at 17:21:05ID: 9374558

No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:

Split points between conick and objects

Please leave any comments here within the next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!

sfotex
EE Cleanup Volunteer

20120131-EE-VQP-002

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