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

   1 /*
   2  * Svjatoslav Commons - shared library of common functionality.
   3  * Copyright (C) 2012, 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 2 of the GNU General Public License
   7  * 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         public ExceptionDialog(final Exception exception) {
  23                 showException(exception);
  24         }
  25
  26         /**
  27          * @param exception
  28          *            exception to show
  29          */
  30         public void showException(final Exception exception) {
  31
  32                 final JFrame frame = new JFrame("Exception occured!");
  33                 final JPanel contentPanel = new JPanel(new BorderLayout());
  34                 final Throwable cause = exception.getCause();
  35
  36                 // build top panel
  37                 {
  38                         final JPanel topPanel = new JPanel();
  39                         topPanel.setLayout(new BoxLayout(topPanel, BoxLayout.Y_AXIS));
  40
  41                         // add exception type
  42                         final JLabel exceptionType = new JLabel("Exception type: "
  43                                         + exception.getClass().getCanonicalName());
  44                         topPanel.add(exceptionType);
  45
  46                         // add error message
  47                         final JLabel message = new JLabel("Error message: "
  48                                         + exception.getMessage());
  49                         topPanel.add(message);
  50
  51                         // add cause message
  52                         if (cause != null)
  53                                 if (cause.getMessage() != null) {
  54                                         final JLabel message2 = new JLabel("Cause: "
  55                                                         + cause.getMessage());
  56                                         topPanel.add(message2);
  57                                 }
  58
  59                         contentPanel.add(topPanel, BorderLayout.NORTH);
  60                 }
  61
  62                 // build stack trace view
  63                 {
  64                         final StringBuffer buffer = new StringBuffer();
  65
  66                         // if cause is available, show original stack trace
  67                         if (cause != null) {
  68                                 buffer.append("Stack trace:\n");
  69                                 final StackTraceElement[] stackTrace = cause.getStackTrace();
  70                                 for (final StackTraceElement stackTraceElement : stackTrace)
  71                                         buffer.append(stackTraceElement.toString() + "\n");
  72                         } else {
  73                                 // otherwise show at least current stack trace
  74                                 buffer.append("Stack trace from original cause is not available.\nShowing current stack trace instead:\n");
  75
  76                                 for (final StackTraceElement stackTraceElement : new Exception(
  77                                                 "Stack trace").getStackTrace())
  78                                         buffer.append(stackTraceElement.toString() + "\n");
  79                         }
  80
  81                         final TextArea textArea = new TextArea(buffer.toString());
  82                         contentPanel.add(textArea, BorderLayout.CENTER);
  83                 }
  84
  85                 // finalize frame
  86                 frame.getContentPane().add(contentPanel);
  87                 frame.setSize(800, 600);
  88                 frame.setVisible(true);
  89
  90                 // Thread.dumpStack();
  91
  92         }
  93
  94         /**
  95          * This method is for testing
  96          */
  97         public static void main(final String[] args) {
  98
  99                 final Throwable cause = new Throwable("details.....");
 100
 101                 final Exception exception = new Exception("test", cause);
 102
 103                 new ExceptionDialog(exception);
 104         }
 105
 106 }