LogDeploymentUi.java

   1 package org.argeo.cms.e4.maintenance;
   2
   3 import java.text.DateFormat;
   4 import java.text.SimpleDateFormat;
   5 import java.util.Enumeration;
   6 import java.util.GregorianCalendar;
   7 import java.util.TimeZone;
   8
   9 import org.argeo.cms.swt.CmsSwtUtils;
  10 import org.eclipse.swt.SWT;
  11 import org.eclipse.swt.layout.GridData;
  12 import org.eclipse.swt.widgets.Composite;
  13 import org.eclipse.swt.widgets.Display;
  14 import org.eclipse.swt.widgets.Text;
  15 import org.osgi.service.log.LogEntry;
  16 import org.osgi.service.log.LogListener;
  17 import org.osgi.service.log.LogReaderService;
  18
  19 class LogDeploymentUi extends AbstractOsgiComposite implements LogListener {
  20         private static final long serialVersionUID = 590221539553514693L;
  21
  22         private DateFormat dateFormat = new SimpleDateFormat("MMdd HH:mm");
  23
  24         private Display display;
  25         private Text logDisplay;
  26
  27         public LogDeploymentUi(Composite parent, int style) {
  28                 super(parent, style);
  29         }
  30
  31         @Override
  32         protected void initUi(int style) {
  33                 LogReaderService logReader = getService(LogReaderService.class);
  34                 // FIXME use server push
  35                 // logReader.addLogListener(this);
  36                 this.display = getDisplay();
  37                 this.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  38                 logDisplay = new Text(this, SWT.WRAP | SWT.MULTI | SWT.READ_ONLY);
  39                 logDisplay.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  40                 CmsSwtUtils.markup(logDisplay);
  41                 Enumeration<LogEntry> logEntries = (Enumeration<LogEntry>) logReader.getLog();
  42                 while (logEntries.hasMoreElements())
  43                         logDisplay.append(printEntry(logEntries.nextElement()));
  44         }
  45
  46         private String printEntry(LogEntry entry) {
  47                 StringBuilder sb = new StringBuilder();
  48                 GregorianCalendar calendar = new GregorianCalendar(TimeZone.getDefault());
  49                 calendar.setTimeInMillis(entry.getTime());
  50                 sb.append(dateFormat.format(calendar.getTime())).append(' ');
  51                 sb.append(entry.getMessage());
  52                 sb.append('\n');
  53                 return sb.toString();
  54         }
  55
  56         @Override
  57         public void logged(LogEntry entry) {
  58                 if (display.isDisposed())
  59                         return;
  60                 display.asyncExec(() -> {
  61                         if (logDisplay.isDisposed())
  62                                 return;
  63                         logDisplay.append(printEntry(entry));
  64                 });
  65                 display.wake();
  66         }
  67
  68         // @Override
  69         // public void dispose() {
  70         // super.dispose();
  71         // getService(LogReaderService.class).removeLogListener(this);
  72         // }
  73 }