content: /* ========================================================================
   * JCommon : a free general purpose class library for the Java(tm) platform
   * ========================================================================
   *
   * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
   * 
   * Project Info:  http://www.jfree.org/jcommon/index.html
   *
   * This library is free software; you can redistribute it and/or modify it 
   * under the terms of the GNU Lesser General Public License as published by 
   * the Free Software Foundation; either version 2.1 of the License, or 
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but 
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
   * USA.  
   *
   * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
   * in the United States and other countries.]
   * 
   * -------------------------
   * PrintStreamLogTarget.java
   * -------------------------
   * (C)opyright 2003-2005, by Thomas Morgner and Contributors.
   *
   * Original Author:  Thomas Morgner;
   * Contributor(s):   David Gilbert (for Object Refinery Limited);
   *
   * $Id: PrintStreamLogTarget.java,v 1.6 2005/10/18 13:24:19 mungady Exp $
   *
   * Changes 
   * -------
   * 02-Dec-2003 : Initial version
   * 11-Feb-2004 : Added missing Javadocs (DG);
   * 
   */
  
  package org.jfree.util;
  
  import java.io.PrintStream;
  import java.io.Serializable;
  
  /**
   * A log target that sends output to a {@link PrintStream}.
   *
   * @author Thomas Morgner
   */
  public class PrintStreamLogTarget implements LogTarget, Serializable {
  
    /** For serialization. */
    private static final long serialVersionUID = 6510564403264504688L;
  
    /** The printstream we use .. */
    private PrintStream printStream;
  
    /**
     * The default constructor. Initializes this target with the system.out 
     * stream.
     * <p>
     * All {@link org.jfree.util.LogTarget} implementations need a default 
     * constructor.
     */
    public PrintStreamLogTarget() {
      this (System.out);
    }
  
    /**
     * The default constructor. Initializes this target with the given stream.
     * <p>
     * @param printStream the print stream that is used to write the content.
     */
    public PrintStreamLogTarget(final PrintStream printStream) {
      if (printStream == null) {
        throw new NullPointerException();
      }
      this.printStream = printStream;
    }
  
    /**
     * Logs a message to the main log stream. All attached logStreams will also
     * receive this message. If the given log-level is higher than the given 
     * debug-level in the main config file, no logging will be done.
     *
     * @param level log level of the message.
     * @param message text to be logged.
     */
    public void log(int level, final Object message) {
      if (level > 3) {
        level = 3;
      }
      this.printStream.print(LEVELS[level]);
      this.printStream.println(message);
      if (level < 3) {
        System.out.flush();
      }
    }
  
    /**
     * logs an message to the main-log stream. All attached logStreams will also
     * receive this message. If the given log-level is higher than the given 
     * debug-level in the main config file, no logging will be done.
     *
     * The exception's stacktrace will be appended to the log-stream
     *
     * @param level log level of the message.
     * @param message text to be logged.
     * @param e the exception, which should be logged.
     */
    public void log(int level, final Object message, final Exception e) {
      if (level > 3) {
        level = 3;
      }
      this.printStream.print(LEVELS[level]);
      this.printStream.println(message);
      e.printStackTrace(this.printStream);
      if (level < 3) {
        System.out.flush();
      }
    }
  }
  