1/* Simple AJAX Code-Kit (SACK) v1.6 */ 2/* �2005 Gregory Wild-Smith */ 3/* www.twilightuniverse.com */ 4/* Software licenced under a modified X11 licence, 5 see documentation or authors website for more details */ 6 7function sack(file) { 8 this.xmlhttp = null; 9 10 this.resetData = function() { 11 this.method = "POST"; 12 this.queryStringSeparator = "?"; 13 this.argumentSeparator = "&"; 14 this.URLString = ""; 15 this.encodeURIString = true; 16 this.execute = false; 17 this.element = null; 18 this.elementObj = null; 19 this.requestFile = file; 20 this.vars = new Object(); 21 this.responseStatus = new Array(2); 22 }; 23 24 this.resetFunctions = function() { 25 this.onLoading = function() { }; 26 this.onLoaded = function() { }; 27 this.onInteractive = function() { }; 28 this.onCompletion = function() { }; 29 this.onError = function() { }; 30 this.onFail = function() { }; 31 }; 32 33 this.reset = function() { 34 this.resetFunctions(); 35 this.resetData(); 36 }; 37 38 this.createAJAX = function() { 39 try { 40 this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); 41 } catch (e1) { 42 try { 43 this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); 44 } catch (e2) { 45 this.xmlhttp = null; 46 } 47 } 48 49 if (! this.xmlhttp) { 50 if (typeof XMLHttpRequest != "undefined") { 51 this.xmlhttp = new XMLHttpRequest(); 52 } else { 53 this.failed = true; 54 } 55 } 56 }; 57 58 this.setVar = function(name, value){ 59 this.vars[name] = Array(value, false); 60 }; 61 62 this.encVar = function(name, value, returnvars) { 63 if (true == returnvars) { 64 return Array(encodeURIComponent(name), encodeURIComponent(value)); 65 } else { 66 this.vars[encodeURIComponent(name)] = Array(encodeURIComponent(value), true); 67 } 68 }; 69 70 this.processURLString = function(string, encode) { 71 encoded = encodeURIComponent(this.argumentSeparator); 72 regexp = new RegExp(this.argumentSeparator + "|" + encoded); 73 varArray = string.split(regexp); 74 for (i = 0; i < varArray.length; i++){ 75 urlVars = varArray[i].split("="); 76 if (true == encode){ 77 this.encVar(urlVars[0], urlVars[1]); 78 } else { 79 this.setVar(urlVars[0], urlVars[1]); 80 } 81 } 82 }; 83 84 this.createURLString = function(urlstring) { 85 if (this.encodeURIString && this.URLString.length) { 86 this.processURLString(this.URLString, true); 87 } 88 89 if (urlstring) { 90 if (this.URLString.length) { 91 this.URLString += this.argumentSeparator + urlstring; 92 } else { 93 this.URLString = urlstring; 94 } 95 } 96 97 // prevents caching of URLString 98 this.setVar("rndval", new Date().getTime()); 99 100 urlstringtemp = new Array(); 101 for (key in this.vars) { 102 if (false == this.vars[key][1] && true == this.encodeURIString) { 103 encoded = this.encVar(key, this.vars[key][0], true); 104 delete this.vars[key]; 105 this.vars[encoded[0]] = Array(encoded[1], true); 106 key = encoded[0]; 107 } 108 109 urlstringtemp[urlstringtemp.length] = key + "=" + this.vars[key][0]; 110 } 111 this.URLString += urlstringtemp.join(this.argumentSeparator); 112 }; 113 114 this.runResponse = function() { 115 eval(this.response); 116 }; 117 118 this.runAJAX = function(urlstring) { 119 if (this.failed) { 120 this.onFail(); 121 } else { 122 this.createURLString(urlstring); 123 if (this.element) { 124 this.elementObj = document.getElementById(this.element); 125 } 126 if (this.xmlhttp) { 127 var self = this; 128 if (this.method == "GET") { 129 totalurlstring = this.requestFile + this.queryStringSeparator + this.URLString; 130 this.xmlhttp.open(this.method, totalurlstring, true); 131 } else { 132 this.xmlhttp.open(this.method, this.requestFile, true); 133 try { 134 this.xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded") 135 } catch (e) { } 136 } 137 138 this.xmlhttp.onreadystatechange = function() { 139 switch (self.xmlhttp.readyState) { 140 case 1: 141 self.onLoading(); 142 break; 143 case 2: 144 self.onLoaded(); 145 break; 146 case 3: 147 self.onInteractive(); 148 break; 149 case 4: 150 self.response = self.xmlhttp.responseText; 151 self.responseXML = self.xmlhttp.responseXML; 152 try { 153 self.responseStatus[0] = self.xmlhttp.status; 154 } catch(e) { 155 self.responseStatus[0] = -1; 156 } 157 try { 158 self.responseStatus[1] = self.xmlhttp.statusText; 159 } catch(e) { 160 self.responseStatus[1] = e; 161 } 162 163 if (self.execute) { 164 self.runResponse(); 165 } 166 167 if (self.elementObj) { 168 elemNodeName = self.elementObj.nodeName; 169 elemNodeName.toLowerCase(); 170 if (elemNodeName == "input" 171 || elemNodeName == "select" 172 || elemNodeName == "option" 173 || elemNodeName == "textarea") { 174 self.elementObj.value = self.response; 175 } else { 176 self.elementObj.innerHTML = self.response; 177 } 178 } 179 if (self.responseStatus[0] == "200") { 180 self.onCompletion(); 181 } else { 182 self.onError(); 183 } 184 185 self.URLString = ""; 186 break; 187 } 188 }; 189 190 this.xmlhttp.send(this.URLString); 191 } 192 } 193 }; 194 195 this.reset(); 196 this.createAJAX(); 197} 198