wp-includes/js/tw-sack.js

   1 /* Simple AJAX Code-Kit (SACK) */
   2 /* ©2005 Gregory Wild-Smith */
   3 /* www.twilightuniverse.com */
   4 /* Software licenced under a modified X11 licence, see documentation or authors website for more details */
   5
   6 function sack(file){
   7         this.AjaxFailedAlert = "Your browser does not support the enhanced functionality of this website, and therefore you will have an experience that differs from the intended one.\n";
   8         this.requestFile = file;
   9         this.method = "POST";
  10         this.URLString = "";
  11         this.encodeURIString = true;
  12         this.execute = false;
  13
  14         this.onLoading = function() { };
  15         this.onLoaded = function() { };
  16         this.onInteractive = function() { };
  17         this.onCompletion = function() { };
  18
  19         this.createAJAX = function() {
  20                 try {
  21                         this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
  22                 } catch (e) {
  23                         try {
  24                                 this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
  25                         } catch (err) {
  26                                 this.xmlhttp = null;
  27                         }
  28                 }
  29                 if(!this.xmlhttp && typeof XMLHttpRequest != "undefined")
  30                         this.xmlhttp = new XMLHttpRequest();
  31                 if (!this.xmlhttp){
  32                         this.failed = true;
  33                 }
  34         };
  35
  36         this.setVar = function(name, value){
  37                 if (this.URLString.length < 3){
  38                         this.URLString = name + "=" + value;
  39                 } else {
  40                         this.URLString += "&" + name + "=" + value;
  41                 }
  42         }
  43
  44         this.encVar = function(name, value){
  45                 var varString = encodeURIComponent(name) + "=" + encodeURIComponent(value);
  46         return varString;
  47         }
  48
  49         this.encodeURLString = function(string){
  50                 varArray = string.split('&');
  51                 for (i = 0; i < varArray.length; i++){
  52                         urlVars = varArray[i].split('=');
  53                         if (urlVars[0].indexOf('amp;') != -1){
  54                                 urlVars[0] = urlVars[0].substring(4);
  55                         }
  56                         varArray[i] = this.encVar(urlVars[0],urlVars[1]);
  57                 }
  58         return varArray.join('&');
  59         }
  60
  61         this.runResponse = function(){
  62                 eval(this.response);
  63         }
  64
  65         this.runAJAX = function(urlstring){
  66                 this.responseStatus = new Array(2);
  67                 if(this.failed && this.AjaxFailedAlert){
  68                         alert(this.AjaxFailedAlert);
  69                 } else {
  70                         if (urlstring){
  71                                 if (this.URLString.length){
  72                                         this.URLString = this.URLString + "&" + urlstring;
  73                                 } else {
  74                                         this.URLString = urlstring;
  75                                 }
  76                         }
  77                         if (this.encodeURIString){
  78                                 var timeval = new Date().getTime();
  79                                 this.URLString = this.encodeURLString(this.URLString);
  80                                 this.setVar("rndval", timeval);
  81                         }
  82                         if (this.element) { this.elementObj = document.getElementById(this.element); }
  83                         if (this.xmlhttp) {
  84                                 var self = this;
  85                                 if (this.method == "GET") {
  86                                         var totalurlstring = this.requestFile + "?" + this.URLString;
  87                                         this.xmlhttp.open(this.method, totalurlstring, true);
  88                                 } else {
  89                                         this.xmlhttp.open(this.method, this.requestFile, true);
  90                                 }
  91                                 if (this.method == "POST"){
  92                                         try {
  93                                                 this.xmlhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded')
  94                                         } catch (e) {}
  95                                 }
  96
  97                                 this.xmlhttp.send(this.URLString);
  98                                 this.xmlhttp.onreadystatechange = function() {
  99                                         switch (self.xmlhttp.readyState){
 100                                                 case 1:
 101                                                         self.onLoading();
 102                                                 break;
 103                                                 case 2:
 104                                                         self.onLoaded();
 105                                                 break;
 106                                                 case 3:
 107                                                         self.onInteractive();
 108                                                 break;
 109                                                 case 4:
 110                                                         self.response = self.xmlhttp.responseText;
 111                                                         self.responseXML = self.xmlhttp.responseXML;
 112                                                         self.responseStatus[0] = self.xmlhttp.status;
 113                                                         self.responseStatus[1] = self.xmlhttp.statusText;
 114                                                         self.onCompletion();
 115                                                         if(self.execute){ self.runResponse(); }
 116                                                         if (self.elementObj) {
 117                                                                 var elemNodeName = self.elementObj.nodeName;
 118                                                                 elemNodeName.toLowerCase();
 119                                                                 if (elemNodeName == "input" || elemNodeName == "select" || elemNodeName == "option" || elemNodeName == "textarea"){
 120                                                                         self.elementObj.value = self.response;
 121                                                                 } else {
 122                                                                         self.elementObj.innerHTML = self.response;
 123                                                                 }
 124                                                         }
 125                                                         self.URLString = "";
 126                                                 break;
 127                                         }
 128                                 };
 129                         }
 130                 }
 131         };
 132 this.createAJAX();
 133 }