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// remote scripting library
// (c) copyright 2005 modernmethod, inc
var sajax_debug_mode = false;
var sajax_request_type = "GET";
/**
* if sajax_debug_mode is true, this function outputs given the message into
* the element with id = sajax_debug; if no such element exists in the document,
* it is injected.
*/
function sajax_debug(text) {
if (!sajax_debug_mode) return false;
var e= document.getElementById('sajax_debug');
if (!e) {
e= document.createElement("p");
e.className= 'sajax_debug';
e.id= 'sajax_debug';
var b= document.getElementsByTagName("body")[0];
if (b.firstChild) b.insertBefore(e, b.firstChild);
else b.appendChild(e);
}
var m= document.createElement("div");
m.appendChild( document.createTextNode( text ) );
e.appendChild( m );
return true;
}
/**
* compatibility wrapper for creating a new XMLHttpRequest object.
*/
function sajax_init_object() {
sajax_debug("sajax_init_object() called..")
var A;
try {
// Try the new style before ActiveX so we don't
// unnecessarily trigger warnings in IE 7 when
// set to prompt about ActiveX usage
A = new XMLHttpRequest();
} catch (e) {
try {
A=new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
A=new ActiveXObject("Microsoft.XMLHTTP");
} catch (oc) {
A=null;
}
}
}
if (!A)
sajax_debug("Could not create connection object.");
return A;
}
/**
* Perform an ajax call to mediawiki. Calls are handeled by AjaxDispatcher.php
* func_name - the name of the function to call. Must be registered in $wgAjaxExportList
* args - an array of arguments to that function
* target - the target that will handle the result of the call. If this is a function,
* if will be called with the XMLHttpRequest as a parameter; if it's an input
* element, its value will be set to the resultText; if it's another type of
* element, its innerHTML will be set to the resultText.
*
* Example:
* sajax_do_call('doFoo', [1, 2, 3], document.getElementById("showFoo"));
*
* This will call the doFoo function via MediaWiki's AjaxDispatcher, with
* (1, 2, 3) as the parameter list, and will show the result in the element
* with id = showFoo
*/
function sajax_do_call(func_name, args, target) {
var i, x, n;
var uri;
var post_data;
uri = wgServer +
((wgScript == null) ? (wgScriptPath + "/index.php") : wgScript) +
"?action=ajax";
if (sajax_request_type == "GET") {
if (uri.indexOf("?") == -1)
uri = uri + "?rs=" + encodeURIComponent(func_name);
else
uri = uri + "&rs=" + encodeURIComponent(func_name);
for (i = 0; i < args.length; i++)
uri = uri + "&rsargs[]=" + encodeURIComponent(args[i]);
//uri = uri + "&rsrnd=" + new Date().getTime();
post_data = null;
} else {
post_data = "rs=" + encodeURIComponent(func_name);
for (i = 0; i < args.length; i++)
post_data = post_data + "&rsargs[]=" + encodeURIComponent(args[i]);
}
x = sajax_init_object();
if (!x) {
alert("AJAX not supported");
return false;
}
try {
x.open(sajax_request_type, uri, true);
} catch (e) {
if (window.location.hostname == "localhost") {
alert("Your browser blocks XMLHttpRequest to 'localhost', try using a real hostname for development/testing.");
}
throw e;
}
if (sajax_request_type == "POST") {
x.setRequestHeader("Method", "POST " + uri + " HTTP/1.1");
x.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
}
x.setRequestHeader("Pragma", "cache=yes");
x.setRequestHeader("Cache-Control", "no-transform");
x.onreadystatechange = function() {
if (x.readyState != 4)
return;
sajax_debug("received (" + x.status + " " + x.statusText + ") " + x.responseText);
//if (x.status != 200)
// alert("Error: " + x.status + " " + x.statusText + ": " + x.responseText);
//else
if ( typeof( target ) == 'function' ) {
target( x );
}
else if ( typeof( target ) == 'object' ) {
if ( target.tagName == 'INPUT' ) {
if (x.status == 200) target.value= x.responseText;
//else alert("Error: " + x.status + " " + x.statusText + " (" + x.responseText + ")");
}
else {
if (x.status == 200) target.innerHTML = x.responseText;
else target.innerHTML= "<div class='error'>Error: " + x.status + " " + x.statusText + " (" + x.responseText + ")</div>";
}
}
else {
alert("bad target for sajax_do_call: not a function or object: " + target);
}
return;
}
sajax_debug(func_name + " uri = " + uri + " / post = " + post_data);
x.send(post_data);
sajax_debug(func_name + " waiting..");
delete x;
return true;
}
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