190 lines
4.8 KiB
JavaScript
190 lines
4.8 KiB
JavaScript
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function sack(file) {
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this.xmlhttp = null;
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this.resetData = function() {
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this.method = "POST";
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this.queryStringSeparator = "?";
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this.argumentSeparator = "&";
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this.URLString = "";
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this.encodeURIString = true;
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this.execute = false;
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this.element = null;
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this.elementObj = null;
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this.requestFile = file;
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this.vars = new Object();
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this.responseStatus = new Array(2);
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};
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this.resetFunctions = function() {
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this.onLoading = function() { };
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this.onLoaded = function() { };
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this.onInteractive = function() { };
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this.onCompletion = function() { };
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this.onError = function() { };
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this.onFail = function() { };
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};
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this.reset = function() {
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this.resetFunctions();
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this.resetData();
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};
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this.createAJAX = function() {
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try {
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this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
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} catch (e1) {
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try {
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this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
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} catch (e2) {
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this.xmlhttp = null;
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}
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}
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if (! this.xmlhttp) {
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if (typeof XMLHttpRequest != "undefined") {
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this.xmlhttp = new XMLHttpRequest();
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} else {
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this.failed = true;
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}
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}
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};
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this.setVar = function(name, value){
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this.vars[name] = Array(value, false);
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};
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this.encVar = function(name, value, returnvars) {
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if (true == returnvars) {
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return Array(encodeURIComponent(name), encodeURIComponent(value));
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} else {
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this.vars[encodeURIComponent(name)] = Array(encodeURIComponent(value), true);
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}
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}
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this.processURLString = function(string, encode) {
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encoded = encodeURIComponent(this.argumentSeparator);
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regexp = new RegExp(this.argumentSeparator + "|" + encoded);
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varArray = string.split(regexp);
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for (i = 0; i < varArray.length; i++){
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urlVars = varArray[i].split("=");
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if (true == encode){
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this.encVar(urlVars[0], urlVars[1]);
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} else {
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this.setVar(urlVars[0], urlVars[1]);
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}
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}
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}
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this.createURLString = function(urlstring) {
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if (this.encodeURIString && this.URLString.length) {
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this.processURLString(this.URLString, true);
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}
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if (urlstring) {
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if (this.URLString.length) {
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this.URLString += this.argumentSeparator + urlstring;
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} else {
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this.URLString = urlstring;
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}
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}
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// prevents caching of URLString
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this.setVar("rndval", new Date().getTime());
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urlstringtemp = new Array();
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for (key in this.vars) {
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if (false == this.vars[key][1] && true == this.encodeURIString) {
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encoded = this.encVar(key, this.vars[key][0], true);
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delete this.vars[key];
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this.vars[encoded[0]] = Array(encoded[1], true);
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key = encoded[0];
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}
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urlstringtemp[urlstringtemp.length] = key + "=" + this.vars[key][0];
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}
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if (urlstring){
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this.URLString += this.argumentSeparator + urlstringtemp.join(this.argumentSeparator);
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} else {
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this.URLString += urlstringtemp.join(this.argumentSeparator);
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}
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}
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this.runResponse = function() {
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eval(this.response);
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}
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this.runAJAX = function(urlstring) {
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if (this.failed) {
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this.onFail();
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} else {
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this.createURLString(urlstring);
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if (this.element) {
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this.elementObj = document.getElementById(this.element);
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}
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if (this.xmlhttp) {
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var self = this;
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if (this.method == "GET") {
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totalurlstring = this.requestFile + this.queryStringSeparator + this.URLString;
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this.xmlhttp.open(this.method, totalurlstring, true);
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} else {
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this.xmlhttp.open(this.method, this.requestFile, true);
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try {
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this.xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
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this.xmlhttp.setRequestHeader("Content-length", this.URLString.length);
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this.xmlhttp.setRequestHeader("Connection", "close");
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} catch (e) { }
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}
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this.xmlhttp.onreadystatechange = function() {
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switch (self.xmlhttp.readyState) {
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case 1:
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self.onLoading();
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break;
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case 2:
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self.onLoaded();
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break;
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case 3:
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self.onInteractive();
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break;
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case 4:
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self.response = self.xmlhttp.responseText;
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self.responseXML = self.xmlhttp.responseXML;
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self.responseStatus[0] = self.xmlhttp.status;
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self.responseStatus[1] = self.xmlhttp.statusText;
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if (self.execute) {
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self.runResponse();
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}
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if (self.elementObj) {
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elemNodeName = self.elementObj.nodeName;
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elemNodeName.toLowerCase();
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if (elemNodeName == "input"
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|| elemNodeName == "select"
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|| elemNodeName == "option"
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|| elemNodeName == "textarea") {
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self.elementObj.value = self.response;
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} else {
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self.elementObj.innerHTML = self.response;
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}
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}
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if (self.responseStatus[0] == "200") {
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self.onCompletion();
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} else {
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self.onError();
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}
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self.URLString = "";
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break;
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}
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};
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this.xmlhttp.send(this.URLString);
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}
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}
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};
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this.reset();
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this.createAJAX();
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}
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