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          * @param args
  26          *            commandline arguments
  27          */
  28         public static void main(final String[] args) {
  29
  30                 final Throwable cause = new Throwable("details.....");
  31
  32                 final Exception exception = new Exception("test", cause);
  33
  34                 new ExceptionDialog(exception);
  35         }
  36
  37         public ExceptionDialog(final Exception exception) {
  38                 showException(exception);
  39         }
  40
  41         /**
  42          * @param exception
  43          *            exception to show
  44          */
  45         public void showException(final Exception exception) {
  46
  47                 final JFrame frame = new JFrame("Exception occured!");
  48                 final JPanel contentPanel = new JPanel(new BorderLayout());
  49                 final Throwable cause = exception.getCause();
  50
  51                 // build top panel
  52                 {
  53                         final JPanel topPanel = new JPanel();
  54                         topPanel.setLayout(new BoxLayout(topPanel, BoxLayout.Y_AXIS));
  55
  56                         // add exception type
  57                         final JLabel exceptionType = new JLabel("Exception type: "
  58                                         + exception.getClass().getCanonicalName());
  59                         topPanel.add(exceptionType);
  60
  61                         // add error message
  62                         final JLabel message = new JLabel("Error message: "
  63                                         + exception.getMessage());
  64                         topPanel.add(message);
  65
  66                         // add cause message
  67                         if (cause != null)
  68                                 if (cause.getMessage() != null) {
  69                                         final JLabel message2 = new JLabel("Cause: "
  70                                                         + cause.getMessage());
  71                                         topPanel.add(message2);
  72                                 }
  73
  74                         contentPanel.add(topPanel, BorderLayout.NORTH);
  75                 }
  76
  77                 // build stack trace view
  78                 {
  79                         final StringBuffer buffer = new StringBuffer();
  80
  81                         // if cause is available, show original stack trace
  82                         if (cause != null) {
  83                                 buffer.append("Stack trace:\n");
  84                                 final StackTraceElement[] stackTrace = cause.getStackTrace();
  85                                 for (final StackTraceElement stackTraceElement : stackTrace)
  86                                         buffer.append(stackTraceElement.toString() + "\n");
  87                         } else {
  88                                 // otherwise show at least current stack trace
  89                                 buffer.append("Stack trace from original cause is not available.\nShowing current stack trace instead:\n");
  90
  91                                 for (final StackTraceElement stackTraceElement : new Exception(
  92                                                 "Stack trace").getStackTrace())
  93                                         buffer.append(stackTraceElement.toString() + "\n");
  94                         }
  95
  96                         final TextArea textArea = new TextArea(buffer.toString());
  97                         contentPanel.add(textArea, BorderLayout.CENTER);
  98                 }
  99
 100                 // finalize frame
 101                 frame.getContentPane().add(contentPanel);
 102                 frame.setSize(800, 600);
 103                 frame.setVisible(true);
 104
 105                 // Thread.dumpStack();
 106
 107         }
 108
 109 }