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Annotation of kupuMPIWG/common/kupuloggers.js, revision 1.1

1.1     ! dwinter     1: /*****************************************************************************
        !             2:  *
        !             3:  * Copyright (c) 2003-2005 Kupu Contributors. All rights reserved.
        !             4:  *
        !             5:  * This software is distributed under the terms of the Kupu
        !             6:  * License. See LICENSE.txt for license text. For a list of Kupu
        !             7:  * Contributors see CREDITS.txt.
        !             8:  *
        !             9:  *****************************************************************************/
        !            10: 
        !            11: // $Id: kupuloggers.js 9879 2005-03-18 12:04:00Z yuppie $
        !            12: 
        !            13: 
        !            14: //----------------------------------------------------------------------------
        !            15: // Loggers
        !            16: //
        !            17: //  Loggers are pretty simple classes, that should have 1 method, called 
        !            18: //  'log'. This is called with 2 arguments, the first one is the message to
        !            19: //  log and the second is the severity, which can be 0 or some other false
        !            20: //  value for debug messages, 1 for warnings and 2 for errors (the loggers
        !            21: //  are allowed to raise an exception if that happens).
        !            22: //
        !            23: //----------------------------------------------------------------------------
        !            24: 
        !            25: function DebugLogger() {
        !            26:     /* Alert all messages */
        !            27:     
        !            28:     this.log = function(message, severity) {
        !            29:         /* log a message */
        !            30:         if (severity > 1) {
        !            31:             alert("Error: " + message);
        !            32:         } else if (severity == 1) {
        !            33:             alert("Warning: " + message);
        !            34:         } else {
        !            35:             alert("Log message: " + message);
        !            36:         }
        !            37:     };
        !            38: }
        !            39: 
        !            40: function PlainLogger(debugelid, maxlength) {
        !            41:     /* writes messages to a debug tool and throws errors */
        !            42: 
        !            43:     this.debugel = getFromSelector(debugelid);
        !            44:     this.maxlength = maxlength;
        !            45:     
        !            46:     this.log = function(message, severity) {
        !            47:         /* log a message */
        !            48:         if (severity > 1) {
        !            49:             throw message;
        !            50:         } else {
        !            51:             if (this.maxlength) {
        !            52:                 if (this.debugel.childNodes.length > this.maxlength - 1) {
        !            53:                     this.debugel.removeChild(this.debugel.childNodes[0]);
        !            54:                 }
        !            55:             }
        !            56:             var now = new Date();
        !            57:             var time = now.getHours() + ':' + now.getMinutes() + ':' + now.getSeconds();
        !            58:             
        !            59:             var div = document.createElement('div');
        !            60:             var text = document.createTextNode(time + ' - ' + message);
        !            61:             div.appendChild(text);
        !            62:             this.debugel.appendChild(div);
        !            63:         }
        !            64:     };
        !            65: }
        !            66: 
        !            67: function DummyLogger() {
        !            68:     this.log = function(message, severity) {
        !            69:         if (severity > 1) {
        !            70:             throw message;
        !            71:         }
        !            72:     };
        !            73: };