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/**
* AJAX Á¬½Ó³Ø
* AJAXConnectionPool Build in 2009.7.10
* @author CodingMouse
* @version 1.0
*/
var AJAXConnectionPool = function() {
// ÈÎÎñ¶ÓÁÐ
var taskQueue = [];
// ÇëÇ󻺳å³Ø
var requestBufferPool = [];
// ×î´óÁ¬½ÓÊý
var maxThreadNumber = 2;
return {
/**
* »ñÈ¡¿ÕÏÐÇëÇó
* @return {¿ÕÏÐÇëÇó¶ÔÏó}
*/
getIdleRequest : function() {
var request = null;
for (var i = 0; i < maxThreadNumber; i++) {
if (requestBufferPool[i].readyState == 0) {
request = requestBufferPool[i];
break;
}
}
return request;
},
/**
* ³õʼ»¯
* @param {×î´óÁ¬½ÓÊý} max
*/
init : function(max) {
if (max != null)
maxThreadNumber = max;
for (var k = 0; k < maxThreadNumber; k++) {
var request = null;
if (window.XMLHttpRequest) { // Èç¹ûÊÇ Google Chrome¡¢ Mozilla Firefox¡¢Netscape¡¢Opera 8.0+¡¢Safari¡¢IE7+ µÈä¯ÀÀÆ÷
request = new XMLHttpRequest();
if (request.overrideMimeType) { // ÉèÖà MiME Àà±ð
/*
* ÓÐЩ°æ±¾µÄä¯ÀÀÆ÷ÔÚ´¦Àí·þÎñÆ÷·µ»ØµÄδ°üº¬XML mime-typeÍ·²¿
* ÐÅÏ¢µÄÄÚÈÝʱ»á±¨´í£¬Òò´Ë£¬ÒªÈ·±£·µ»ØµÄÄÚÈÝ°üº¬text/xmlÐÅÏ¢¡£
*/
request.overrideMimeType("text/xml");
}
} else if (window.ActiveXObject) { // Èç¹ûÊÇ Internet Explorer 6.0- ä¯ÀÀÆ÷
var msXml = [
"Msxml2.XMLHTTP.6.0",
"Msxml2.XMLHTTP.5.0",
"Msxml2.XMLHTTP.4.0",
"Msxml2.XMLHTTP.3.0",
"Msxml2.XMLHTTP",
"Microsoft.XMLHTTP"];
for(var i = 0; i < msXml.length; i++) {
try{
request = new ActiveXObject(msXml[i]);
break;
}catch(e) {
request = null;
}
}
if (request == null) {
alert("Sorry! Because you are using a browser that does not support AJAX, the server can not process a r