Error.java

   1 package org.argeo.eclipse.ui.dialogs;
   2
   3 import java.io.PrintWriter;
   4 import java.io.StringWriter;
   5
   6 import org.apache.commons.logging.Log;
   7 import org.apache.commons.logging.LogFactory;
   8 import org.eclipse.jface.dialogs.IMessageProvider;
   9 import org.eclipse.jface.dialogs.TitleAreaDialog;
  10 import org.eclipse.swt.SWT;
  11 import org.eclipse.swt.graphics.Point;
  12 import org.eclipse.swt.layout.GridData;
  13 import org.eclipse.swt.layout.GridLayout;
  14 import org.eclipse.swt.widgets.Composite;
  15 import org.eclipse.swt.widgets.Control;
  16 import org.eclipse.swt.widgets.Display;
  17 import org.eclipse.swt.widgets.Shell;
  18 import org.eclipse.swt.widgets.Text;
  19
  20 /** !Generic error dialog to be used in try/catch blocks*/
  21 public class Error extends TitleAreaDialog {
  22         private final static Log log = LogFactory.getLog(Error.class);
  23
  24         private final String message;
  25         private final Throwable exception;
  26
  27         public static void show(String message, Throwable e) {
  28                 new Error(Display.getDefault().getActiveShell(), message, e).open();
  29         }
  30
  31         public static void show(String message) {
  32                 new Error(Display.getDefault().getActiveShell(), message, null).open();
  33         }
  34
  35         public Error(Shell parentShell, String message, Throwable e) {
  36                 super(parentShell);
  37                 this.message = message;
  38                 this.exception = e;
  39                 log.error(message, e);
  40         }
  41
  42         protected Point getInitialSize() {
  43                 if (exception != null)
  44                         return new Point(800, 600);
  45                 else
  46                         return new Point(400, 300);
  47         }
  48
  49         @Override
  50         protected Control createDialogArea(Composite parent) {
  51                 Composite dialogarea = (Composite) super.createDialogArea(parent);
  52                 dialogarea.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  53                 Composite composite = new Composite(dialogarea, SWT.NONE);
  54                 composite.setLayout(new GridLayout(2, false));
  55                 composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  56
  57                 setMessage(message != null ? message
  58                                 + (exception != null ? ": " + exception.getMessage() : "")
  59                                 : exception != null ? exception.getMessage() : "Unkown Error",
  60                                 IMessageProvider.ERROR);
  61
  62                 if (exception != null) {
  63                         Text stack = new Text(composite, SWT.MULTI  | SWT.LEAD
  64                                         | SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
  65                         stack.setEditable(false);
  66                         stack.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  67                         StringWriter sw = new StringWriter();
  68                         exception.printStackTrace(new PrintWriter(sw));
  69                         stack.setText(sw.toString());
  70                 }
  71
  72                 parent.pack();
  73                 return composite;
  74         }
  75
  76         protected void configureShell(Shell shell) {
  77                 super.configureShell(shell);
  78                 shell.setText("Error");
  79         }
  80
  81 }