skins/common/ajax.js

   1 // remote scripting library
   2 // (c) copyright 2005 modernmethod, inc
   3 var sajax_debug_mode = false;
   4 var sajax_request_type = "GET";
   5
   6 var started;
   7 var typing;
   8 var memory=null;
   9 var body=null;
  10 var oldbody=null;
  11
  12 function sajax_debug(text) {
  13         if (sajax_debug_mode)
  14                 alert("RSD: " + text)
  15 }
  16
  17
  18 function sajax_init_object() {
  19         sajax_debug("sajax_init_object() called..")
  20         var A;
  21         try {
  22                 A=new ActiveXObject("Msxml2.XMLHTTP");
  23         } catch (e) {
  24                 try {
  25                         A=new ActiveXObject("Microsoft.XMLHTTP");
  26                 } catch (oc) {
  27                         A=null;
  28                 }
  29         }
  30         if(!A && typeof XMLHttpRequest != "undefined")
  31                 A = new XMLHttpRequest();
  32         if (!A)
  33                 sajax_debug("Could not create connection object.");
  34         return A;
  35 }
  36
  37
  38 function sajax_do_call(func_name, args) {
  39         var i, x, n;
  40         var uri;
  41         var post_data;
  42         uri = wgServer + "/" + wgScriptPath + "/index.php?action=ajax";
  43         if (sajax_request_type == "GET") {
  44                 if (uri.indexOf("?") == -1)
  45                         uri = uri + "?rs=" + escape(func_name);
  46                 else
  47                         uri = uri + "&rs=" + escape(func_name);
  48                 for (i = 0; i < args.length-1; i++)
  49                         uri = uri + "&rsargs[]=" + escape(args[i]);
  50                 //uri = uri + "&rsrnd=" + new Date().getTime();
  51                 post_data = null;
  52         } else {
  53                 post_data = "rs=" + escape(func_name);
  54                 for (i = 0; i < args.length-1; i++)
  55                         post_data = post_data + "&rsargs[]=" + escape(args[i]);
  56         }
  57         x = sajax_init_object();
  58         x.open(sajax_request_type, uri, true);
  59         if (sajax_request_type == "POST") {
  60                 x.setRequestHeader("Method", "POST " + uri + " HTTP/1.1");
  61                 x.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  62         }
  63         x.setRequestHeader("Pragma", "cache=yes");
  64         x.setRequestHeader("Cache-Control", "no-transform");
  65         x.onreadystatechange = function() {
  66                 if (x.readyState != 4)
  67                         return;
  68                 sajax_debug("received " + x.responseText);
  69                 var status;
  70                 var data;
  71                 status = x.responseText.charAt(0);
  72                 data = x.responseText.substring(2);
  73                 if (status == "-")
  74                         alert("Error: " + data);
  75                 else
  76                         args[args.length-1](data);
  77         }
  78         x.send(post_data);
  79         sajax_debug(func_name + " uri = " + uri + "/post = " + post_data);
  80         sajax_debug(func_name + " waiting..");
  81         delete x;
  82 }
  83
  84 // Remove the typing barrier to allow call() to complete
  85 function Search_doneTyping()
  86 {
  87         typing=false;
  88 }
  89
  90 // Wait 500ms to run call()
  91 function Searching_Go()
  92 {
  93         setTimeout("Searching_Call()", 500);
  94 }
  95
  96 // If the user is typing wait until they are done.
  97 function Search_Typing() {
  98         started=true;
  99         typing=true;
 100         window.status = "Waiting until you're done typing...";
 101         setTimeout("Search_doneTyping()", 500);
 102
 103         // I believe these are needed by IE for when the users press return?
 104         if (window.event)
 105         {
 106                 if (event.keyCode == 13)
 107                 {
 108                         event.cancelBubble = true;
 109                         event.returnValue = false;
 110                 }
 111         }
 112 }
 113
 114 // Set the body div to the results
 115 function Searching_SetResult(result)
 116 {
 117         //body.innerHTML = result;
 118         t = document.getElementById("searchTarget");
 119         if ( t == null ) {
 120                 oldbody=body.innerHTML;
 121                 body.innerHTML= '<div id="searchTargetContainer"><div id="searchTarget" ></div></div>' ;
 122                 t = document.getElementById("searchTarget");
 123         }
 124         t.innerHTML = result;
 125         t.style.display='block';
 126 }
 127
 128 function Searching_Hide_Results()
 129 {
 130         t = document.getElementById("searchTarget");
 131         t.style.display='none';
 132         body.innerHTML = oldbody;
 133 }
 134
 135
 136 // This will call the php function that will eventually
 137 // return a results table
 138 function Searching_Call()
 139 {
 140         var x;
 141         Searching_Go();
 142
 143         //Don't proceed if user is typing
 144         if (typing)
 145                 return;
 146
 147         x = document.getElementById("searchInput").value;
 148
 149         // Don't search again if the query is the same
 150         if (x==memory)
 151                 return;
 152
 153         memory=x;
 154         if (started) {
 155                 // Don't search for blank or < 3 chars.
 156                 if ((x=="") || (x.length < 3))
 157                 {
 158                         return;
 159                 }
 160                 x_wfSajaxSearch(x, Searching_SetResult);
 161         }
 162 }
 163
 164 function x_wfSajaxSearch() {
 165         sajax_do_call( "wfSajaxSearch", x_wfSajaxSearch.arguments );
 166 }
 167
 168
 169 //Initialize
 170 function sajax_onload() {
 171         x = document.getElementById( 'searchInput' );
 172         x.onkeypress= function() { Search_Typing(); };
 173         Searching_Go();
 174         body = document.getElementById("content");
 175 }
 176
 177 hookEvent("load", sajax_onload);