Solved

Java Applet

Posted on 2011-09-21
1
311 Views
Last Modified: 2012-05-12
Hello,

I am working on a J2SE web application that divides the browser window in 2 frames. The top frame called the powerbarframe has a series of Javascript Object buttons that control the display of various applets in the bottom frame called the display frame.

The bottom frame itself is composed of JOptionPane with several tabs. It has a Java method that prompts the user if he wants to discard changes before loading a new applet in response to a tab change. See function below:

    public void tabWillBeSelected(TabSelectionWillChangeEvent e) {
    //public void tabWillBeSelected(TabSelectionWillChangeEvent e) {
          //EventObject ApplicationEvent TabSelectionWillChangeEvent - ChangeEvent
        // If configuration is modified, show dialog
        if (configurationManager.isModifedConfigurations()) {

            // ask if they really want to discard changes
            int selection = JOptionPane.showConfirmDialog(getView(), messages.getString("ConfigTabChangeConfirmMsg"),
                    messages.getString("ConfigTabChangeConfirmMsgTitle"),
                    JOptionPane.YES_NO_OPTION);

            if (selection != JOptionPane.YES_OPTION) {
            e.setCanceled(true);
            } else { // Discard changes
                configurationManager.setModifedConfigurations(false);
            }
        }
    }

If the user wants to discard changes, the event is cancelled.
I want to implement the same functionality if the user click one of the Javascript Object buttons from the powerbar frame. I am thincking of writing a methode from the applet shutdown() method. The problem is that it does not allow the the user to save he configuration changes if he wants to:

see code snipped below:

    public void shutdown() {
        if (configurationManager.isModifedConfigurations()) {
              int selection = 999;
              
            // ask if they really want to discard changes
            selection = JOptionPane.showConfirmDialog(null, messages.getString("ConfigTabChangeConfirmMsg"),
                    messages.getString("ConfigTabChangeConfirmMsgTitle"),
                    JOptionPane.YES_NO_OPTION);
           
            if (selection == JOptionPane.YES_OPTION) { //Discard Changes
                configurationManager.setModifedConfigurations(false);

                super.shutdown();
                removeBindings();
                stopCurrentApplet();
            } else if (selection == JOptionPane.NO_OPTION) { //Save changes
                  //find way to abort
                  System.out.println("Catch ApplicationEvent !!! Update Mutable Table fields.");
//                  abort();
//                  currentApplet.stop();
                  return;
            }
        }
    }

            currentApplet.stop();
            if (logger.isDebugEnabled()) {
                logger.debug("Destroying prior applet " + currentApplet.getClass());
            }
            currentApplet.destroy();


Any suggestions ??

Paolo
0
Comment
Question by:ptreves
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 

Accepted Solution

by:
ptreves earned 0 total points
ID: 36904334
Need to implement proper controller.
0

Featured Post

Enterprise Mobility and BYOD For Dummies

Like “For Dummies” books, you can read this in whatever order you choose and learn about mobility and BYOD; and how to put a competitive mobile infrastructure in place. Developed for SMBs and large enterprises alike, you will find helpful use cases, planning, and implementation.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The task of choosing a web design company to build a website for your business should never be taken in a light manner. Provided the fact that your website will act as a representative to your business and will be responsible for imposing an online …
Online collaboration is quickly becoming embedded in the workplace, and its benefits are tangible. See what the current landscape looks like and what the future holds for collaboration tools and the future of work.
The purpose of this video is to demonstrate how to set up the WordPress backend so that each page automatically generates a Mailchimp signup form in the sidebar. This will be demonstrated using a Windows 8 PC. Tools Used are Photoshop, Awesome…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question