mirror of
https://git.friendi.ca/friendica/friendica-addons.git
synced 2024-12-23 01:00:16 +00:00
116 lines
3.3 KiB
JavaScript
116 lines
3.3 KiB
JavaScript
// jXHR.js (JSON-P XHR)
|
|
// v0.1 (c) Kyle Simpson
|
|
// MIT License
|
|
// modified by gueron Jonathan to work with strophe lib
|
|
// for http://www.iadvize.com
|
|
|
|
(function(global){
|
|
var SETTIMEOUT = global.setTimeout, // for better compression
|
|
doc = global.document,
|
|
callback_counter = 0;
|
|
|
|
global.jXHR = function() {
|
|
var script_url,
|
|
script_loaded,
|
|
jsonp_callback,
|
|
scriptElem,
|
|
publicAPI = null;
|
|
|
|
function removeScript() { try { scriptElem.parentNode.removeChild(scriptElem); } catch (err) { } }
|
|
|
|
function reset() {
|
|
script_loaded = false;
|
|
script_url = "";
|
|
removeScript();
|
|
scriptElem = null;
|
|
fireReadyStateChange(0);
|
|
}
|
|
|
|
function ThrowError(msg) {
|
|
try {
|
|
publicAPI.onerror.call(publicAPI,msg,script_url);
|
|
} catch (err) {
|
|
//throw new Error(msg);
|
|
}
|
|
}
|
|
|
|
function handleScriptLoad() {
|
|
if ((this.readyState && this.readyState!=="complete" && this.readyState!=="loaded") || script_loaded) { return; }
|
|
this.onload = this.onreadystatechange = null; // prevent memory leak
|
|
script_loaded = true;
|
|
if (publicAPI.readyState !== 4) ThrowError("handleScriptLoad: Script failed to load ["+script_url+"].");
|
|
removeScript();
|
|
}
|
|
|
|
function parseXMLString(xmlStr) {
|
|
var xmlDoc = null;
|
|
if(window.DOMParser) {
|
|
var parser = new DOMParser();
|
|
xmlDoc = parser.parseFromString(xmlStr,"text/xml");
|
|
}
|
|
else {
|
|
xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
|
|
xmlDoc.async="false";
|
|
xmlDoc.loadXML(xmlStr);
|
|
}
|
|
return xmlDoc;
|
|
}
|
|
|
|
function fireReadyStateChange(rs,args) {
|
|
|
|
args = args || [];
|
|
publicAPI.readyState = rs;
|
|
if (rs == 4) {
|
|
publicAPI.responseText = args[0].reply;
|
|
publicAPI.responseXML = parseXMLString(args[0].reply);
|
|
}
|
|
if (typeof publicAPI.onreadystatechange === "function") publicAPI.onreadystatechange.apply(publicAPI,args);
|
|
}
|
|
|
|
publicAPI = {
|
|
onerror:null,
|
|
onreadystatechange:null,
|
|
readyState:0,
|
|
status:200,
|
|
responseBody: null,
|
|
responseText: null,
|
|
responseXML: null,
|
|
open:function(method,url){
|
|
reset();
|
|
var internal_callback = "cb"+(callback_counter++);
|
|
(function(icb){
|
|
global.jXHR[icb] = function() {
|
|
try { fireReadyStateChange.call(publicAPI,4,arguments); }
|
|
catch(err) {
|
|
publicAPI.readyState = -1;
|
|
ThrowError("Script failed to run ["+script_url+"].");
|
|
}
|
|
global.jXHR[icb] = null;
|
|
};
|
|
})(internal_callback);
|
|
script_url = url + '?callback=?jXHR&data=';
|
|
script_url = script_url.replace(/=\?jXHR/,"=jXHR."+internal_callback);
|
|
fireReadyStateChange(1);
|
|
},
|
|
send:function(data){
|
|
script_url = script_url + encodeURIComponent(data);
|
|
SETTIMEOUT(function(){
|
|
scriptElem = doc.createElement("script");
|
|
scriptElem.setAttribute("type","text/javascript");
|
|
scriptElem.onload = scriptElem.onreadystatechange = function(){handleScriptLoad.call(scriptElem);};
|
|
scriptElem.setAttribute("src",script_url);
|
|
doc.getElementsByTagName("head")[0].appendChild(scriptElem);
|
|
},0);
|
|
fireReadyStateChange(2);
|
|
},
|
|
abort:function(){},
|
|
setRequestHeader:function(){}, // noop
|
|
getResponseHeader:function(){return "";}, // basically noop
|
|
getAllResponseHeaders:function(){return [];} // ditto
|
|
};
|
|
|
|
reset();
|
|
|
|
return publicAPI;
|
|
};
|
|
})(window);
|