org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/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.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 /**
  21  * Generic error dialog to be used in try/catch blocks.
  22  *
  23  * @deprecated Use CMS dialogs instead.
  24  */
  25 @Deprecated
  26 public class ErrorFeedback extends TitleAreaDialog {
  27         private static final long serialVersionUID = -8918084784628179044L;
  28
  29         private final static Log log = LogFactory.getLog(ErrorFeedback.class);
  30
  31         private final String message;
  32         private final Throwable exception;
  33
  34         public static void show(String message, Throwable e) {
  35                 // rethrow ThreaDeath in order to make sure that RAP will properly clean
  36                 // up the UI thread
  37                 if (e instanceof ThreadDeath)
  38                         throw (ThreadDeath) e;
  39
  40                 new ErrorFeedback(newShell(), message, e).open();
  41         }
  42
  43         public static void show(String message) {
  44                 new ErrorFeedback(newShell(), message, null).open();
  45         }
  46
  47         private static Shell newShell() {
  48                 return new Shell(getDisplay(), SWT.NO_TRIM);
  49         }
  50
  51         /** Tries to find a display */
  52         private static Display getDisplay() {
  53                 try {
  54                         Display display = Display.getCurrent();
  55                         if (display != null)
  56                                 return display;
  57                         else
  58                                 return Display.getDefault();
  59                 } catch (Exception e) {
  60                         return Display.getCurrent();
  61                 }
  62         }
  63
  64         public ErrorFeedback(Shell parentShell, String message, Throwable e) {
  65                 super(parentShell);
  66                 setShellStyle(SWT.NO_TRIM);
  67                 this.message = message;
  68                 this.exception = e;
  69                 log.error(message, e);
  70         }
  71
  72         protected Point getInitialSize() {
  73                 if (exception != null)
  74                         return new Point(800, 600);
  75                 else
  76                         return new Point(400, 300);
  77         }
  78
  79         @Override
  80         protected Control createDialogArea(Composite parent) {
  81                 Composite dialogarea = (Composite) super.createDialogArea(parent);
  82                 dialogarea.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  83                 Composite composite = new Composite(dialogarea, SWT.NONE);
  84                 composite.setLayout(new GridLayout(2, false));
  85                 composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  86
  87                 setMessage(message != null ? message + (exception != null ? ": " + exception.getMessage() : "")
  88                                 : exception != null ? exception.getMessage() : "Unkown Error", IMessageProvider.ERROR);
  89
  90                 if (exception != null) {
  91                         Text stack = new Text(composite, SWT.MULTI | SWT.LEAD | SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
  92                         stack.setEditable(false);
  93                         stack.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  94                         StringWriter sw = new StringWriter();
  95                         exception.printStackTrace(new PrintWriter(sw));
  96                         stack.setText(sw.toString());
  97                 }
  98
  99                 parent.pack();
 100                 return composite;
 101         }
 102
 103         protected void configureShell(Shell shell) {
 104                 super.configureShell(shell);
 105                 shell.setText("Error");
 106         }
 107 }