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ErrorDisplayDialog.javaAPI DocGlassfish v2 API7237Fri May 04 22:34:22 BST 2007com.sun.enterprise.appclient.jws.boot

ErrorDisplayDialog

public class ErrorDisplayDialog extends Object
Displays errors detected after Java Web Start has launched the Java Web Start-aware ACC but before the developer's client has launched. Such errors would normally go to the Java Web Start trace file or the Java Console (if either is enabled) but by default neither of those is turned on, with the result that the end-user has no information about such errors. The client would simply never start.
author
tjquinn

Fields Summary
private static final String
LINE_SEP
private static ResourceBundle
rb
Constructors Summary
Methods Summary
private static java.lang.StringgetString(java.lang.String key)

        return rb.getString(key);
private static booleanshowDialog(java.lang.String mainMessage, javax.swing.JScrollPane sp, javax.swing.JCheckBox copyToClipboardCB)
Displays a dialog box with the specified main message and stack trace.

param
mainMessage the string to display at the top of the dialog box introducing the stack trace
param
sp the JScrollPane containing the text area
param
copyToClipboardCB the JCheckBox to use - null if this is a report that copying itself failed
return
whether the user wants to copy the error text to the clipboard

        String close = getString("jwsacc.errorDialog.closeLabel");
        Object [] displayElements = (copyToClipboardCB == null) ? 
                    new Object[] {mainMessage, sp} :
                    new Object[] {mainMessage, sp, copyToClipboardCB};
        JOptionPane pane = new JOptionPane(
                displayElements,
                JOptionPane.ERROR_MESSAGE,
                JOptionPane.DEFAULT_OPTION,
                null,
                new String[] {close},
                close);
     
        JDialog dialog = pane.createDialog(null, getString("jwsacc.errorDialog.title"));
        dialog.setResizable(true);
        dialog.setVisible(true);
        boolean result = (copyToClipboardCB == null ? false : copyToClipboardCB.isSelected());
        dialog.dispose();
        return result;
public static voidshowErrors(java.lang.Throwable t, java.util.ResourceBundle rb)
Displays a dialog box reporting an error, listing the stack trace in a text box and allowing the user to copy the stack trace to the platform's clipboard before dismissing the dialog box.

param
t the Throwable error detected and being reported
param
rb a ResourceBundle containing localizable strings

    
                                                     
           
        
        ErrorDisplayDialog.rb = rb;
        
        /*
         *The JOptionPane class will accept other Components as elements of
         *the dialog box.  Build a JTextArea containing the stack trace.  Do not
         *let the user edit the text.  
         */
        JTextArea stackTraceArea = new JTextArea();
        stackTraceArea.setEditable(false);
        stackTraceArea.setRows(16);
        
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        PrintStream ps = new PrintStream(baos);
        
        t.printStackTrace(ps);
        stackTraceArea.setText(baos.toString());
        
        /*
         *Place the text area inside a scroll pane.
         */
        JScrollPane sp = new JScrollPane(stackTraceArea);
        
        /*
         *Build a check box for the user to click to copy the error information
         *to the platform's clipboard.
         */
        JCheckBox copyToClipboardCB = new JCheckBox(getString("jwsacc.errorDialog.copyToClipboardLabel"));
        
        /*
         *Display the dialog box that also contains the text area's scroll
         *pane and the checkbox and then wait for the user to close it.
         */
        boolean copyToClipboard = showDialog(
                getString("jwsacc.errorDialog.mainMessage.1") +
                    LINE_SEP +
                    getString("jwsacc.errorDialog.mainMessage.2"),
                sp,
                copyToClipboardCB
                );
        
        if (copyToClipboard) {
            Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
            StringSelection ss = new StringSelection(stackTraceArea.getText());
            
            try {
                cb.setContents(ss, null);
            }
            catch (Throwable e) {
                /*
                 *If we cannot copy the text to the clipboard, tell the user that
                 *and suggest that he or she manually copy it.
                 */
                showDialog(
                        getString("jwsacc.errorDialog.errorCopyingMessage.1") +
                            LINE_SEP +
                            getString("jwsacc.errorDialog.errorCopyingMessage.2"),
                        sp,
                        null /* no checkbox this time */
                );
            }
        }