src/main/java/eu/svjatoslav/commons/gui/dialog/ExceptionDialog.java

   1 /*
   2  * Svjatoslav Commons - shared library of common functionality.
   3  * Copyright ©2012-2014, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of version 3 of the GNU Lesser General Public License
   7  * or later as published by the Free Software Foundation.
   8  */
   9
  10 package eu.svjatoslav.commons.gui.dialog;
  11
  12 import java.awt.BorderLayout;
  13 import java.awt.TextArea;
  14
  15 import javax.swing.BoxLayout;
  16 import javax.swing.JFrame;
  17 import javax.swing.JLabel;
  18 import javax.swing.JPanel;
  19
  20 public class ExceptionDialog {
  21
  22         /**
  23          * This method is for testing
  24          */
  25         public static void main(final String[] args) {
  26
  27                 final Throwable cause = new Throwable("details.....");
  28
  29                 final Exception exception = new Exception("test", cause);
  30
  31                 new ExceptionDialog(exception);
  32         }
  33
  34         public ExceptionDialog(final Exception exception) {
  35                 showException(exception);
  36         }
  37
  38         /**
  39          * @param exception
  40          *            exception to show
  41          */
  42         public void showException(final Exception exception) {
  43
  44                 final JFrame frame = new JFrame("Exception occured!");
  45                 final JPanel contentPanel = new JPanel(new BorderLayout());
  46                 final Throwable cause = exception.getCause();
  47
  48                 // build top panel
  49                 {
  50                         final JPanel topPanel = new JPanel();
  51                         topPanel.setLayout(new BoxLayout(topPanel, BoxLayout.Y_AXIS));
  52
  53                         // add exception type
  54                         final JLabel exceptionType = new JLabel("Exception type: "
  55                                         + exception.getClass().getCanonicalName());
  56                         topPanel.add(exceptionType);
  57
  58                         // add error message
  59                         final JLabel message = new JLabel("Error message: "
  60                                         + exception.getMessage());
  61                         topPanel.add(message);
  62
  63                         // add cause message
  64                         if (cause != null)
  65                                 if (cause.getMessage() != null) {
  66                                         final JLabel message2 = new JLabel("Cause: "
  67                                                         + cause.getMessage());
  68                                         topPanel.add(message2);
  69                                 }
  70
  71                         contentPanel.add(topPanel, BorderLayout.NORTH);
  72                 }
  73
  74                 // build stack trace view
  75                 {
  76                         final StringBuffer buffer = new StringBuffer();
  77
  78                         // if cause is available, show original stack trace
  79                         if (cause != null) {
  80                                 buffer.append("Stack trace:\n");
  81                                 final StackTraceElement[] stackTrace = cause.getStackTrace();
  82                                 for (final StackTraceElement stackTraceElement : stackTrace)
  83                                         buffer.append(stackTraceElement.toString() + "\n");
  84                         } else {
  85                                 // otherwise show at least current stack trace
  86                                 buffer.append("Stack trace from original cause is not available.\nShowing current stack trace instead:\n");
  87
  88                                 for (final StackTraceElement stackTraceElement : new Exception(
  89                                                 "Stack trace").getStackTrace())
  90                                         buffer.append(stackTraceElement.toString() + "\n");
  91                         }
  92
  93                         final TextArea textArea = new TextArea(buffer.toString());
  94                         contentPanel.add(textArea, BorderLayout.CENTER);
  95                 }
  96
  97                 // finalize frame
  98                 frame.getContentPane().add(contentPanel);
  99                 frame.setSize(800, 600);
 100                 frame.setVisible(true);
 101
 102                 // Thread.dumpStack();
 103
 104         }
 105
 106 }