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## org.gjt.sp.util
Class Log

    java.lang.Object
      org.gjt.sp.util.Log

public class Log
extends java.lang.Object

This class provides methods for logging events. In terms of functionality, it is somewhere in between `System.out.println()` and full-blown logging packages such as log4j.

All events are logged to an in-memory buffer and optionally a stream, and those with a high urgency (warnings and errors) are also printed to standard output.

Logging of exception tracebacks is supported.

This class can also optionally redirect standard output and error to the log.

Version:
  $Id: Log.java,v 1.14 2004/03/28 00:07:27 spestov Exp $
Author:
  Slava Pestov

Field Summary
`static int` | `DEBUG` Debugging message urgency.
`static int` | `ERROR` Error urgency.
`static int` | `MAXLINES` The maximum number of log messages that will be kept in memory.
`static int` | `MESSAGE` Message urgency.
`static int` | `NOTICE` Notice urgency.
`static int` | `WARNING` Warning urgency.

Constructor Summary
`Log()`

Method Summary
`static void` | `closeStream()` Closes the log stream.
`static void` | `flushStream()` Flushes the log stream.
`static javax.swing.ListModel` | `getLogListModel()` Returns the list model for viewing the log contents.
`static void` | `init(boolean stdio, int level)` Initializes the log.
`static void` | `log(int urgency, java.lang.Object source, java.lang.Object message)` Logs a message.
`static void` | `setLogWriter(java.io.Writer stream)` Writes all currently logged messages to this stream if there was no stream set previously, and sets the stream to write future log messages to.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### MAXLINES

    public static final int MAXLINES

  The maximum number of log messages that will be kept in memory.

  Since:
    jEdit 2.6pre5
  See Also:
    Constant Field Values

### DEBUG

    public static final int DEBUG

  Debugging message urgency. Should be used for messages only useful when debugging a problem.

  Since:
    jEdit 2.2pre2
  See Also:
    Constant Field Values

### MESSAGE

    public static final int MESSAGE

  Message urgency. Should be used for messages which give more detail than notices.

  Since:
    jEdit 2.2pre2
  See Also:
    Constant Field Values

### NOTICE

    public static final int NOTICE

  Notice urgency. Should be used for messages that directly affect the user.

  Since:
    jEdit 2.2pre2
  See Also:
    Constant Field Values

### WARNING

    public static final int WARNING

  Warning urgency. Should be used for messages that warrant attention.

  Since:
    jEdit 2.2pre2
  See Also:
    Constant Field Values

### ERROR

    public static final int ERROR

  Error urgency. Should be used for messages that signal a failure.

  Since:
    jEdit 2.2pre2
  See Also:
    Constant Field Values

Constructor Detail

### Log

    public Log()

Method Detail

### init

    public static void init(boolean stdio,
                            int level)

  Initializes the log.

  Parameters:
    `stdio` - If true, standard output and error will be sent to the log
    `level` - Messages with this log level or higher will be printed to the system console
  Since:
    jEdit 3.2pre4

### setLogWriter

    public static void setLogWriter(java.io.Writer stream)

  Writes all currently logged messages to this stream if there was no stream set previously, and sets the stream to write future log messages to.

  Parameters:
    `stream` - The writer
  Since:
    jEdit 3.2pre4

### flushStream

    public static void flushStream()

  Flushes the log stream.

  Since:
    jEdit 2.6pre5

### closeStream

    public static void closeStream()

  Closes the log stream. Should be done before your program exits.

  Since:
    jEdit 2.6pre5

### getLogListModel

    public static javax.swing.ListModel getLogListModel()

  Returns the list model for viewing the log contents.

  Since:
    jEdit 4.2pre1

### log

    public static void log(int urgency,
                           java.lang.Object source,
                           java.lang.Object message)

  Logs a message. This method is thread-safe.

  The following code sends a typical debugging message to the activity log:

      Log.log(Log.DEBUG,this,"counter = " + counter);

  The corresponding activity log entry might read as follows:

      [debug] JavaParser: counter = 15

  Parameters:
    `urgency` - The urgency; can be one of `Log.DEBUG`, `Log.MESSAGE`, `Log.NOTICE`, `Log.WARNING`, or `Log.ERROR`.
    `source` - The source of the message, either an object or a class instance. When writing log messages from macros, set this parameter to `BeanShell.class` to make macro errors easier to spot in the activity log.
    `message` - The message. This can either be a string or an exception
  Since:
    jEdit 2.2pre2

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