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logging.js
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logging.js
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/**
*@class jQuery.getLogger
*@name jQuery.getLogger
*@author <a href="mailto:[email protected]">Zhouquan.yezq</a>
*@description jQuery.getLogger will return a logger instance, and it already solve the console
*script issue on lower browser version like IE6. and for the IE6 or other lower version, we use the log
monitor to show the log ..
<h2>Feature 1: module log instance<h2>
<pre>
var mylog=jQuery.Logger('com.company.project.moduleName');
mylog.log('this is the log');
mylog=jQuery.Logger('com.company.project.moduleName2');
mylog.log('this is the log');
</pre>
<h2>Feature 2: condition error call back:</h2>
<pre>
$.Logger.setLogFilter(/^CONDITION$/,function(msg,url, time){
//todo, send request to back-end . etc
});
</pre>
<h2>Feature 3: output try /catch error :</h2>
<pre>
try{
...
}catch(ex){
mylog.printWrapError(ex);
}
</pre>
<h2>Feature 4: Inline monitor panel: shift+Alt+Alt+L</h2>
<h2>Feature 5: Close the log feature on line: set log level as -1</h2>
*/
(function($){
//the log constructor
var log=function(){};
log.level=4; //default level, show all the log,if you want to close the log, just set log level as -1
log.cacheSize=1000;
log.policy=[]; // the filter policy center
var methods = [ "error", "warn", "info", "debug", "log"];//0-4 level
//log level not very clear compare with back-end --log4j
$.extend(log.prototype, {
/***
* @name jQuery.getLogger#enabled
* @function
*/
enabled: function(lev) {
if(lev>log.level ) {
return false;
}
return true;
},
/***
* @name jQuery.getLogger#doFilter
* @description if just one filter, so it means just show the log which meet the filter, and if have filter call back ,do it
* if have more filters, from the console, it will show all the logs to the user, but it will do every filter call back for it's condiction
* @function
*/
doFilter: function() {
if(!(log.policy.length==1)) return true;
var f=log.policy[0];
f=f['fi'];
if(f.test && !f.test(arguments[0][0]) && !f.test(this.name())) {
return false
}
return true;
},
name: function() {
return this._name;
},
/***
* @name jQuery.getLogger#log
* @function
*/
log: function() {
this._log(4, arguments);
},
/***
* @name jQuery.getLogger#debug
* @function
*/
debug: function() {
this._log(3, arguments);
},
/***
* @name jQuery.getLogger#info
* @function
*/
info: function() {
this._log(2, arguments);
},
/***
* @name jQuery.getLogger#warn
* @function
*/
warn: function() {
this._log(1, arguments);
},
/***
* @name jQuery.getLogger#error
* @function
*/
error: function() {
this._log(0, arguments);
},
_handler: function(level, name, msg){
var method=methods[level];
msg=[[method,name+" |"].join(" | ")].concat(Array.prototype.slice.call(msg));
if(!log.logPool){
log.logPool=[];
}
if(log.logPool.length===log.cacheSize){
//if the cache log more than cacheSize , then remove the previous first one.
log.logPool=log.logPool.slice(1);
}
if(!(outputProcessor.turnOn || (this.monitor && this.monitor.trunOn))){
log.logPool.push(msg.join(''));
}
if( this.monitor && this.monitor.trunOn ){ //$.browser.msie Just IE or not
this.monitor.appendMessage(msg.join(''));
}else if(!this.monitor){
outputProcessor(msg.join(''));
}
if(self.console && self.console.error) {
if(console.log.apply) {//IE8 do not work on this way. undefined
console[method].apply(console, msg);
}else {
console[console[method]?method:'log'](msg);
}
}
},
_log: function(level, msg) {
if (this.enabled(level) && this.doFilter(msg)) {
this._handler(level,this.name(),msg);
var me=this;
log.policy.length>0?$.each(log.policy,function(index,e) { // do every filter and execute it's callback
var f=e['fi'];
if(f && f.test && (f.test(msg) || f.test(me.name()))) {// if have filter action , do it
e['cb']? e['cb'](msg,window.location.href,( new Date() ).getTime()):'';
}
}):'';
}
},
printWrapError: function(e) {
var e=new NativeError(e);
var msg=e.getType()+" happen at "+e.getLineNumber()+"line \nCaused By:\n"+e.getMessage();
this.error(msg);
}
});
/**Native Error Class**/
var NativeError=function(e) {this._error=e;};
NativeError.prototype.getType=function() {
if (this._error instanceof EvalError) return "EvalError";
if (this._error instanceof RangeError) return "RangeError";
if (this._error instanceof ReferenceError) return "ReferenceError";
if (this._error instanceof SyntaxError) return "SyntaxError";
if (this._error instanceof TypeError) return "TypeError";
return "Error";
}
NativeError.prototype.getMessage = function() {
return (this._error.message || this._error.toString()).replace(/\s*$/,"");
};
NativeError.prototype.getLineNumber = function() {
if ($.browser.safari) {
return this._error.line;
} else {
var line=this._error.lineNumber;
if(line == null || line === "" || isNaN(line)){
return null;
}
if($.browser.msie){
return line - 1;
}else{
return line;
}
}
};
var logs={};//logs container
//extend this getLoggger method as jQuery method
$.extend({
Logger: function(name) {
if (!logs[name]) {
logs[name] = new log(name);
logs[name]._name=name;
}
return logs[name];
}
});
$.extend($.Logger,{
// all the Logger configuratin will set under Logger
setLogLevel: function(level) {
log.level=level;
},
/**
* @param filter should be RegExp pattern
* @cb this is the call back function, it will pass the log message into
* the cb parameter as the first parameter. so user could do some action to process the log message , like
* send the message to the back-end or others. etc: cb(message, winodw.location.href,( new Date() ).getTime())
* so user could get the enough information for log
*/
setLogFilter: function(filter,cb) {
var fool={
'fi':filter
};
cb?(fool['cb']=cb):'';
log.policy.push(fool);
//cb?(log.filterAction=cb):'';
},
/**
* setting the Monitor page url. Note: we should keep the target page and monior page under same domain.
*/
setMonitorPage: function(url) {
log.monitor?(log.monitor.MONITOR_PAGE)=url:'';
},
gc: function() { //should parent level call it
log=null;
}
});
function outputProcessor(msg){
if($('#loggingContainer20120526').length==0){
var tpl=["<div id='myc'><div id='loggingContainer20120526' style='display:none;clear:left;position:absolute;font-size:11px;top:0px;right:0px;width:350px;",
"color:#000;font-family:Monaco, Courier, monospace;z-index:1;border:2px solid #444;'>",
"<div id='loggingheader20120526' style='width:100%;height:25px;line-height:25px;background-color:#000;cursor:pointer;text-align:left;color:#FFF;bold-weight:bold;'>",
"<span style='float:left;'>Application Log Monitor</span>",
"<span style='float:right;cursor:pointer;color:#FFF;margin-right:5px;'><strong id='loggingclosebtn20120526'>X</strong></span>",
"<span style='float:right;width:10px;height:10px;line-height:25px;background-color:yellow;margin:8px 5px;' class='bgcolor' data-bgcolor='yellow'></span>",
"<span style='margin:8px 5px;float:right;width:10px;height:10px;line-height:25px;background-color:#FFF;' class='bgcolor' data-bgcolor='#FFF'></span>",
"<span style='margin:8px 5px;float:right;width:10px;height:10px;line-height:25px;background-color:pink;' class='bgcolor' data-bgcolor='pink'></span>",
"<span style='margin:8px 5px;float:right;width:10px;height:10px;line-height:25px;background-color:#fcf9a4;' class='bgcolor' data-bgcolor='#fcf9a4'></span>",
"<span style='margin:8px 5px;float:right;width:10px;height:10px;line-height:25px;background-color:#00bf00;' class='bgcolor' data-bgcolor='#00bf00''></span>",
"<span style='margin:8px 5px;float:right;width:10px;height:10px;line-height:25px;background-color:#b4d3f2;' class='bgcolor' data-bgcolor='#b4d3f2''></span>",
"<span style='margin:8px 5px;float:right;width:10px;height:10px;line-height:25px;background-color:#bfbfbf;' class='bgcolor' data-bgcolor='#bfbfbf'></span>",
"</div>",
"<div id='logging20120526' style='position:relative;background-color:#FFF;font-size:11px;color:#000000;",
"text-align:left;padding: 19px 4px 2px 4px;width:340px;height:400px;overflow-y:auto;overflow-x:auto;'>",
"</div></div></div>"].join('');
$(document.body).append(tpl);
$('#loggingheader20120526').dblclick(function(){
var t=$('#logging20120526');
t.css('display')=='block'?t.hide():t.show();
});
$('#loggingheader20120526').delegate('.bgcolor','click',function(){
$('#logging20120526').css('background-color',$(this).data('bgcolor'));
})
$('#loggingclosebtn20120526').click(function(){
$('#loggingContainer20120526').hide();
});
$(document).keydown(function(e) {
if (e.ctrlKey && e.altKey && e.keyCode == 76) { //ctrl+alt+l
$('#loggingContainer20120526').show();
outputProcessor.turnOn=true;
if($.use){
$.use('ui-core,ui-draggable,ui-dialog', function(){
var d = $('#loggingContainer20120526',"#myc");
d.dialog( {
modal: false,
shim: true,
draggable:{
handle:'#loggingheader20120526'
},
css: {
left: e.clientX?(e.clientX +100):600,
top: e.clientY? (e.clientY+100):100
}
});
});
}else if($( "#myc" ).draggable){
$( "#myc" ).draggable();
}else{
alert('please import the jquery-ui js');
}
}
});
}
$.each(log.logPool,function(index,e){
appendMessage(e);
});
log.logPool=[];
appendMessage(msg);
};
function appendMessage(strMessage){
var logLevel=strMessage.split('|')[0];
//var methods = [ "error", "warn", "info", "debug", "log"];
var color="";
switch (logLevel)
{
case 'error ':
color='color:#990000;';
break;
case 'warn ':
color='color:#996600;';
break;
case 'info ':
color='color:#000000;';
break;
case 'debug ':
color='color:#444444;';
break;
case 'log ':
color='color:#888888;';
break;
}
this._hasappendedmsg = true;
//TODO add object parse processor, right now all the thing, just treat it as text.
$('#logging20120526').append('<pre style="'+color+' ">'+strMessage+'</pre>');
};
//jQuery(function($) {
// outputProcessor('');
//});
})(jQuery);