source: branches/2.2/jabberit_messenger/jmessenger/js/connector.mini.js @ 3102

(function()
{var _THREADS=[];var _ie;function _config(pObj,pEvent,pHandler)
{if(typeof pObj=='object')
{if(pEvent.substring(0,2)=='on')
pEvent=pEvent.substring(2,pEvent.length);if(pObj.addEventListener)
pObj.addEventListener(pEvent,pHandler,false);else if(pObj.attachEvent)
pObj.attachEvent('on'+pEvent,pHandler);}}
function _xhr()
{try
{return new XMLHttpRequest();}
catch(_e)
{_ie=true;try
{return new ActiveXObject('Msxml2.XMLHTTP');}
catch(_e1)
{try
{return new ActiveXObject('Microsoft.XMLHTTP');}
catch(_e2)
{return false;}}}}
function _HANDLER()
{var _ID=arguments[0];if(_THREADS[_ID])
{if(_ie&&_THREADS[_ID]._XHR.readyState!=4)
return false;switch(_THREADS[_ID]._XHR.readyState)
{case 3:if(_THREADS[_ID]._HANDLER.stream)
{var _data=_THREADS[_ID]._XHR.responseText.substr(_THREADS[_ID]._index).replace(/^ +| +$/g,'');_THREADS[_ID]._rtlen=_THREADS[_ID]._XHR.responseText.length;if(_THREADS[_ID]._index<_THREADS[_ID]._rtlen&&_data.length)
{try
{_THREADS[_ID]._HANDLER.stream(_data);}
catch(_e)
{}}
if(_THREADS[_ID])
{_THREADS[_ID]._index=_THREADS[_ID]._rtlen;}}
break;case 4:try
{switch(_THREADS[_ID]._XHR.status)
{case 200:var _data=(_THREADS[_ID]._MODE=='XML')?_THREADS[_ID]._XHR.responseXML:_THREADS[_ID]._XHR.responseText;if(_ie&&_THREADS[_ID]._HANDLER.stream)
_THREADS[_ID]._HANDLER.stream(_data);var _request=(_THREADS[_ID]._HANDLER.request)?_THREADS[_ID]._HANDLER.request:false;delete _THREADS[_ID];if(_request)
try
{_request(_data);}
catch(_e)
{}
break;case 404:delete _THREADS[_ID];alert('Page Not Found!');break;default:delete _THREADS[_ID];}}
catch(e)
{}
break;default:}}}
function _execute()
{var _ID=arguments[0];var _ACTION='act='+_ID;var _TARGET=this._PATH;var _SEND=null;if(_TARGET!=''&&_TARGET.lastIndexOf('/')!=(_TARGET.length-1))
_TARGET+='/';_TARGET+=(this._CONTROLLER)?this._CONTROLLER:'controller.php';if(_THREADS[_ID]._METHOD=='GET')
_TARGET+='?'+_ACTION;_THREADS[_ID]._XHR.open(_THREADS[_ID]._METHOD,_TARGET,true);if(_THREADS[_ID]._METHOD=='POST')
{_THREADS[_ID]._XHR.setRequestHeader('Content-Type','application/x-www-form-urlencoded');_THREADS[_ID]._XHR.setRequestHeader('Cache-Control','no-store, no-cache, must-revalidate');_THREADS[_ID]._XHR.setRequestHeader('Cache-Control','post-check=0, pre-check=0');_THREADS[_ID]._XHR.setRequestHeader('Pragma','no-cache');_SEND=_ACTION+'&'+arguments[1];}
_THREADS[_ID]._XHR.onreadystatechange=function(){_HANDLER(_ID);};_THREADS[_ID]._XHR.send(_SEND);}
function usage()
{return""+"Description:\n"+"\t<obj>.go(string access, [mixed handler[, mixed post]])\n\n"+"Parameters:\n"+"\taccess : assinatura de acesso à camada de controle.\n"+"\thandler : uma função a ser executada no fim da requisição\n"+"\t\tou um objeto que poderá conter dois índices sendo\n"+"\t\tque ambos deverão ser uma função que será executada\n"+"\t\tconforme o status do objeto xhr, sendo que na posição\n"+"\t\t'stream' será a função a ser executada a cada iteração\n"+"\t\tdo objeto xhr e na posição 'request' será a função\n"+"\t\ta ser executada no fim da requisição.\n"+"\tpost : se especificado deverá ser uma query string ou um\n"+"\tXML bem formatado.\n\n";}
function go()
{var _argv=arguments;var _argc=_argv.length;var _ID=_argv[0];var _POST;if(_argc<1||_argc>3)
return{'error':"#0\n\n"+usage()};if(typeof _ID!='string')
return{'error':"#1\n\n"+usage()};_THREADS[_ID]={'_HANDLER':{},'_METHOD':(_argv[2])?'POST':'GET','_MODE':null,'_TYPE':null,'_XHR':null};if(_argv[2])
_POST=_argv[2];if(_argv[1])
switch(typeof _argv[1])
{case'function':_THREADS[_ID]._HANDLER={'request':_argv[1]};break;case'object':for(var i in _argv[1])
if(i!='stream'&&i!='request')
{delete _THREADS[_ID];return{'error':"#3\n\n"+usage()};}
else if(i=='stream')
{_THREADS[_ID]._index=0;_THREADS[_ID]._rtlen=0;}
_THREADS[_ID]._HANDLER=_argv[1];break;case'string':if(_argc==2)
{_THREADS[_ID]._METHOD='POST';_POST=_argv[1];}
break;default:}
if(!(_THREADS[_ID]._XHR=_xhr()))
return{'error':"#4 it cannot make a xhr object"};(_THREADS[_ID]._METHOD=='GET')?_execute.call(this,_ID):_execute.call(this,_ID,_POST);return{'success':"your thread is running and the response "+"will be manipulated by the handler"};}
function abort()
{for(var _ID in _THREADS)
{try
{if(_THREADS[_ID]&&_THREADS[_ID]._XHR&&_THREADS[_ID]._XHR.abort)
_THREADS[_ID]._XHR.abort();delete _THREADS[_ID];}
catch(e){}}}
function Connector()
{var _argv=arguments;this._PATH=(_argv.length>0)?_argv[0]:'';this._CONTROLLER=(_argv.length==2)?_argv[1]:false;}
Connector.prototype.go=go;Connector.prototype.abort=abort;window.AjaxConnector=Connector;_config(window,'onbeforeunload',abort);})();