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/***************************************************************************
 * Copyright (c) 2004-2007 Eike Stepper, Germany.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *    Eike Stepper - initial API and implementation
 **************************************************************************/
package org.eclipse.net4j.util.om.trace;

import org.eclipse.net4j.util.IOUtil;
import org.eclipse.net4j.util.om.OMTraceHandler;

import java.io.PrintStream;

/**
 * @author Eike Stepper
 */
public class PrintTraceHandler implements OMTraceHandler
{
  public static final PrintTraceHandler CONSOLE = new PrintTraceHandler();

  private PrintStream stream;

  private boolean shortContext;

  public PrintTraceHandler(PrintStream stream)
  {
    this.stream = stream;
  }

  protected PrintTraceHandler()
  {
    this(IOUtil.OUT());
  }

  public boolean isShortContext()
  {
    return shortContext;
  }

  public void setShortContext(boolean shortContext)
  {
    this.shortContext = shortContext;
  }

  public void traced(Event event)
  {
    String context = event.getContext().getName();
    if (shortContext)
    {
      int pos = Math.max(context.lastIndexOf('.'), context.lastIndexOf('$'));
      if (pos != -1)
      {
        context = context.substring(pos + 1);
      }
    }

    stream.println(Thread.currentThread().getName() + " [" + context + "] " + event.getMessage()); //$NON-NLS-1$
    if (event.getThrowable() != null)
    {
      IOUtil.print(event.getThrowable(), stream);
    }
  }
}