actionscript-lib-logger-Logger.ax [swf] flex
package {
//import util.Observable;
A general log class. Use getLog() to create an app-wide instance. Send messages with fatal(), error(), warn(), info(), and debug(). Add views for the log with addObserver() (views must implement Observer).
version: 1.0.0
public class @ax-actionscript-lib-logger-Logger extends actionscript_lib_util_Observable {
// Static variable. A reference to the log instance (Singleton).
private static var log:@ax-actionscript-lib-logger-Logger = null;
// The possible log levels for a message.
public static const FATAL:Number = 0;
public static const ERROR:Number = 1;
public static const WARN:Number = 2;
public static const INFO:Number = 3;
public static const DEBUG:Number = 4;
private var lastMsg:actionscript_lib_logger_LogMessage;
// The human-readable descriptions of the above log levels.
public static var levelDescriptions:Array = ["FATAL", "ERROR",
"WARN", "INFO", "DEBUG"];
// The zero-relative filter level for the log. Messages with a level
// above logLevel will not be passed on to observers.
// Default is 3, "INFO" (only DEBUG messages are filtered out).
private var logLevel:Number;
@ax-actionscript-lib-logger-Logger Constructor This class is normally a singleton with a private constructor, but private constructors aren't allowed in ActionScript 3.0.
public function @ax-actionscript-lib-logger-Logger () {
// Show "INFO" level messages by default.
setLevel(@ax-actionscript-lib-logger-Logger.INFO);
}
Returns a reference to the log instance. If no log instance exists yet, creates one.
returns: A @ax-actionscript-lib-logger-Logger instance.
public static function getLog():@ax-actionscript-lib-logger-Logger {
if (log == null) {
log = new @ax-actionscript-lib-logger-Logger();
}
return log;
}
Returns a human readable string representing the specified log level.
public static function getLevelDesc(level:Number):String {
return levelDescriptions[level];
}
Sets the message filter level for the log.
parameter: lev The level above which messages are filtered out.
public function setLevel(lev:Number):void {
// Make sure the supplied level is an integer.
lev = Math.floor(lev);
// Set the log level if it's one of the acceptable levels.
if (lev >= @ax-actionscript-lib-logger-Logger.FATAL && lev <= @ax-actionscript-lib-logger-Logger.DEBUG) {
logLevel = lev;
info("Log level set to: " + lev);
return;
}
// If we get this far, the log level isn't valid.
warn("Invalid log level specified.");
}
Returns the message filter level for the log.
public function getLevel():Number {
return logLevel;
}
Returns the most recent message sent to the log.
public function getLastMsg():actionscript_lib_logger_LogMessage {
return lastMsg;
}
Sends a message to the log, with severity "FATAL".
public function fatal(msg:String):void {
// If the filter level is at least "FATAL", broadcast the message to observers.
if (logLevel >= @ax-actionscript-lib-logger-Logger.FATAL) {
// Construct the log message object.
lastMsg = new actionscript_lib_logger_LogMessage(msg, @ax-actionscript-lib-logger-Logger.FATAL);
// Pass the message on to observers.
setChanged();
notifyObservers(lastMsg);
}
}
Sends a message to the log, with severity "ERROR".
public function error(msg:String):void {
// If the filter level is at least "ERROR", broadcast the message to observers.
if (logLevel >= @ax-actionscript-lib-logger-Logger.ERROR) {
lastMsg = new actionscript_lib_logger_LogMessage(msg, @ax-actionscript-lib-logger-Logger.ERROR);
setChanged();
notifyObservers(lastMsg);
}
}
Sends a message to the log, with severity "WARN".
public function warn(msg:String):void {
// If the filter level is at least "WARN", broadcast the message to observers.
if (logLevel >= @ax-actionscript-lib-logger-Logger.WARN) {
lastMsg = new actionscript_lib_logger_LogMessage(msg, @ax-actionscript-lib-logger-Logger.WARN);
setChanged();
notifyObservers(lastMsg);
}
}
Sends a message to the log, with severity "INFO".
public function info(msg:String):void {
// If the filter level is at least "INFO", broadcast the message to observers.
if (logLevel >= @ax-actionscript-lib-logger-Logger.INFO) {
lastMsg = new actionscript_lib_logger_LogMessage(msg, @ax-actionscript-lib-logger-Logger.INFO);
setChanged();
notifyObservers(lastMsg);
}
}
Sends a message to the log, with severity "DEBUG".
public function debug(msg:String):void {
// If the filter level is at least "DEBUG", broadcast the message to observers.
if (logLevel >= @ax-actionscript-lib-logger-Logger.DEBUG) {
lastMsg = new actionscript_lib_logger_LogMessage(msg, @ax-actionscript-lib-logger-Logger.DEBUG);
setChanged();
notifyObservers(lastMsg);
}
}
}
}
(C) Æliens 27/08/2009
You may not copy or print any of this material without explicit permission of the author or the publisher. In case of other copyright issues, contact the author.
