dialogs/ErrorFeedback.java

   1 package org.argeo.eclipse.ui.dialogs;
   2
   3 import java.io.PrintWriter;
   4 import java.io.StringWriter;
   5
   6 import org.argeo.api.cms.CmsLog;
   7 import org.eclipse.jface.dialogs.IMessageProvider;
   8 import org.eclipse.jface.dialogs.TitleAreaDialog;
   9 import org.eclipse.swt.SWT;
  10 import org.eclipse.swt.graphics.Point;
  11 import org.eclipse.swt.layout.GridData;
  12 import org.eclipse.swt.layout.GridLayout;
  13 import org.eclipse.swt.widgets.Composite;
  14 import org.eclipse.swt.widgets.Control;
  15 import org.eclipse.swt.widgets.Display;
  16 import org.eclipse.swt.widgets.Shell;
  17 import org.eclipse.swt.widgets.Text;
  18
  19 /**
  20  * Generic error dialog to be used in try/catch blocks.
  21  *
  22  * @deprecated Use CMS dialogs instead.
  23  */
  24 @Deprecated
  25 public class ErrorFeedback extends TitleAreaDialog {
  26         private static final long serialVersionUID = -8918084784628179044L;
  27
  28         private final static CmsLog log = CmsLog.getLog(ErrorFeedback.class);
  29
  30         private final String message;
  31         private final Throwable exception;
  32
  33         public static void show(String message, Throwable e) {
  34                 // rethrow ThreaDeath in order to make sure that RAP will properly clean
  35                 // up the UI thread
  36                 if (e instanceof ThreadDeath)
  37                         throw (ThreadDeath) e;
  38
  39                 new ErrorFeedback(newShell(), message, e).open();
  40         }
  41
  42         public static void show(String message) {
  43                 new ErrorFeedback(newShell(), message, null).open();
  44         }
  45
  46         private static Shell newShell() {
  47                 return new Shell(getDisplay(), SWT.NO_TRIM);
  48         }
  49
  50         /** Tries to find a display */
  51         private static Display getDisplay() {
  52                 try {
  53                         Display display = Display.getCurrent();
  54                         if (display != null)
  55                                 return display;
  56                         else
  57                                 return Display.getDefault();
  58                 } catch (Exception e) {
  59                         return Display.getCurrent();
  60                 }
  61         }
  62
  63         public ErrorFeedback(Shell parentShell, String message, Throwable e) {
  64                 super(parentShell);
  65                 setShellStyle(SWT.NO_TRIM);
  66                 this.message = message;
  67                 this.exception = e;
  68                 log.error(message, e);
  69         }
  70
  71         protected Point getInitialSize() {
  72                 if (exception != null)
  73                         return new Point(800, 600);
  74                 else
  75                         return new Point(400, 300);
  76         }
  77
  78         @Override
  79         protected Control createDialogArea(Composite parent) {
  80                 Composite dialogarea = (Composite) super.createDialogArea(parent);
  81                 dialogarea.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  82                 Composite composite = new Composite(dialogarea, SWT.NONE);
  83                 composite.setLayout(new GridLayout(2, false));
  84                 composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  85
  86                 setMessage(message != null ? message + (exception != null ? ": " + exception.getMessage() : "")
  87                                 : exception != null ? exception.getMessage() : "Unkown Error", IMessageProvider.ERROR);
  88
  89                 if (exception != null) {
  90                         Text stack = new Text(composite, SWT.MULTI | SWT.LEAD | SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
  91                         stack.setEditable(false);
  92                         stack.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  93                         StringWriter sw = new StringWriter();
  94                         exception.printStackTrace(new PrintWriter(sw));
  95                         stack.setText(sw.toString());
  96                 }
  97
  98                 parent.pack();
  99                 return composite;
 100         }
 101
 102         protected void configureShell(Shell shell) {
 103                 super.configureShell(shell);
 104                 shell.setText("Error");
 105         }
 106 }