function JsHttpRequest() { this._construct() }
(function() { var COUNT = 0; var PENDING = {}; var CACHE = {}; JsHttpRequest.dataReady = function(id, text, js) { var undef; var th = PENDING[id]; delete PENDING[id]; if (th) { delete th._xmlReq; if (th.caching && th.hash) CACHE[th.hash] = [text, js]; th._dataReady(text, js);} else if (th !== false) { throw "JsHttpRequest.dataReady(): unknown pending id: " + id;}
}
JsHttpRequest.query = function(url, content, onready, nocache) { var req = new JsHttpRequest(); req.caching = !nocache; req.onreadystatechange = function() { if (req.readyState == 4) { onready(req.responseJS, req.responseText);}
}
req.open(null, url, true); req.send(content);}, JsHttpRequest.prototype = { onreadystatechange: null, readyState: 0, responseText: null, responseXML: null, status: 200, statusText: "OK", responseJS: null, session_name: "PHPSESSID", caching: false, loader: null, _span: null, _id: null, _xmlReq: null, _openArg: null, _reqHeaders: null, _maxUrlLen: 2000, dummy: function() {}, abort: function() { if (this._xmlReq) { this._xmlReq.abort(); this._xmlReq = null;}
this._cleanupScript(); this._changeReadyState(4, true);}, open: function(method, url, asyncFlag, username, password) { var sid = this._getSid(); if (sid) url += (url.indexOf('?')>=0? '&' : '?') + this.session_name + "=" + this.escape(sid); this._openArg = { method: (method||'').toUpperCase(), url: url, asyncFlag: asyncFlag, username: username != null? username : '', password: password != null? password : ''
}; this._id = null; this._xmlReq = null; this._reqHeaders = []; this._changeReadyState(1, true); return true;}, send: function(content) { this._changeReadyState(1, true); var id = (new Date().getTime()) + "" + COUNT++; var url = this._openArg.url; var queryText = []; var queryElem = []; if (!this._hash2query(content, null, queryText, queryElem)) return; var loader = (this.loader||'').toLowerCase(); var method = this._openArg.method; var xmlReq = null; if (queryElem.length && !loader) { loader = 'form';} else { xmlReq = this._obtainXmlReq(id, url)
}
var fullGetUrl = url + (url.indexOf('?')>=0? '&' : '?') + queryText.join('&'); this.hash = null; if (this.caching && !queryElem.length) { this.hash = fullGetUrl; if (CACHE[this.hash]) { var c = CACHE[this.hash]; this._dataReady(c[0], c[1]); return false;}
}
var canSetHeaders = xmlReq && (window.ActiveXObject || xmlReq.setRequestHeader); if (!loader) { if (xmlReq) { loader = 'xml'; switch (method) { case "POST":
if (!canSetHeaders) { loader = 'form';}
break; case "GET":
break; default:
if (canSetHeaders) { method = 'POST';} else { if (fullGetUrl.length > this._maxUrlLen) { method = 'POST'; loader = 'form';} else { method = 'GET';}
}
}
} else { loader = 'script'; switch (method) { case "POST":
loader = 'form'; break; case "GET":
break; default:
if (fullGetUrl.length > this._maxUrlLen) { method = 'POST'; loader = 'form';} else { method = 'GET';}
}
}
} else if (!method) { switch (loader) { case 'form':
method = 'POST'; break; case 'script':
method = 'GET'; break; default:
if (canSetHeaders) { method = 'POST';} else { method = 'GET';}
}
}
var requestBody = null; if (method == 'GET') { url = fullGetUrl; if (url.length > this._maxUrlLen) return this._error('Cannot use so long query (URL is ' + url.length + ' byte(s) length) with GET request.');} else if (method == 'POST') { requestBody = queryText.join('&');} else { return this._error('Unknown method: ' + method + '. Only GET and POST are supported.');}
url = url + (url.indexOf('?')>=0? '&' : '?') + 'JsHttpRequest=' + id + '-' + loader; PENDING[id] = this; switch (loader) { case 'xml':
if (!xmlReq) return this._error('Cannot use XMLHttpRequest or ActiveX loader: not supported'); if (method == "POST" && !canSetHeaders) return this._error('Cannot use XMLHttpRequest loader or ActiveX loader, POST method: headers setting is not supported'); if (queryElem.length) return this._error('Cannot use XMLHttpRequest loader: direct form elements using and uploading are not implemented'); this._xmlReq = xmlReq; var a = this._openArg; this._xmlReq.open(method, url, a.asyncFlag, a.username, a.password); if (canSetHeaders) { for (var i=0; i<this._reqHeaders.length; i++)
this._xmlReq.setRequestHeader(this._reqHeaders[i][0], this._reqHeaders[i][1]); this._xmlReq.setRequestHeader('Content-Type', 'application/octet-stream');}
return this._xmlReq.send(requestBody); case 'script':
if (method != 'GET') return this._error('Cannot use SCRIPT loader: it supports only GET method'); if (queryElem.length) return this._error('Cannot use SCRIPT loader: direct form elements using and uploading are not implemented'); this._obtainScript(id, url); return true; case 'form':
if (!this._obtainForm(id, url, method, queryText, queryElem)) return null; return true; default:
return this._error('Unknown loader: ' + loader);}
}, getAllResponseHeaders: function() { if (this._xmlReq) return this._xmlReq.getAllResponseHeaders(); return '';}, getResponseHeader: function(label) { if (this._xmlReq) return this._xmlReq.getResponseHeader(label); return '';}, setRequestHeader: function(label, value) { this._reqHeaders[this._reqHeaders.length] = [label, value];}, _construct: function() {}, _dataReady: function(text, js) { with (this) { if (text !== null || js !== null) { status = 4; responseText = responseXML = text; responseJS = js;} else { status = 500; responseText = responseXML = responseJS = null;}
_changeReadyState(2); _changeReadyState(3); _changeReadyState(4); _cleanupScript();}}, _error: function(msg) { throw (window.Error? new Error(msg) : msg);}, _obtainXmlReq: function(id, url) { var p = url.match(new RegExp('^([a-z]+)://([^/]+)(.*)', 'i')); if (p) { if (p[2].toLowerCase() == document.location.hostname.toLowerCase()) { url = p[3];} else { return null;}
}
var req = null; if (window.XMLHttpRequest) { try { req = new XMLHttpRequest() } catch(e) {}
} else if (window.ActiveXObject) { try { req = new ActiveXObject("Microsoft.XMLHTTP") } catch(e) {}
if (!req) try { req = new ActiveXObject("Msxml2.XMLHTTP") } catch (e) {}
}
if (req) { var th = this; req.onreadystatechange = function() { if (req.readyState == 4) { req.onreadystatechange = th.dummy; th.status = null; try { th.status = req.status; th.responseText = req.responseText;} catch (e) {}
if (!th.status) return; var funcRequestBody = null; try { eval('funcRequestBody = function() {\n' + th.responseText + '\n}');} catch (e) { return th._error("JavaScript code generated by backend is invalid!\n" + th.responseText)
}
funcRequestBody();}
}; this._id = id;}
return req;}, _obtainScript: function(id, href) { with (document) { var span = createElement('SPAN'); span.style.display = 'none'; body.insertBefore(span, body.lastChild); span.innerHTML = 'Text for stupid IE.<s'+'cript></' + 'script>'; setTimeout(function() { var s = span.getElementsByTagName('script')[0]; s.language = 'JavaScript'; if (s.setAttribute) s.setAttribute('src', href); else s.src = href;}, 10); this._id = id; this._span = span;}}, _obtainForm: function(id, url, method, queryText, queryElem) { if (method == 'GET') { queryText = url.split('?', 2)[1].split('&'); url = url.split('?', 2)[0];}
var div = document.createElement('DIV'); div.id = 'jshr_d_' + id; div.style.position = 'absolute'; div.style.visibility = 'hidden'; div.innerHTML = '<form enctype="multipart/form-data"></form>' + '<iframe src="javascript:\'\'" name="jshr_i_' + id + '" style="width:0px; height:0px; overflow:hidden; border:none"></iframe>'; var form = div.getElementsByTagName('FORM')[0]; var iframe = div.getElementsByTagName('IFRAME')[0]; if (queryElem.length) { form = queryElem[0][1].form; var foundFile = false; for (var i = 0; i < queryElem.length; i++) { var e = queryElem[i][1]; if (!e.form) { return this._error('Element "' + e.name + '" do not belongs to any form!');}
if (e.form != form) { return this._error('Element "' + e.name + '" belongs to different form. All elements must belong to the same form!');}
foundFile = foundFile || (e.tagName.toLowerCase() == 'input' && (e.type||'').toLowerCase() == 'file');}
var et = "multipart/form-data"; if (form.enctype != et && foundFile) { return this._error('Attribute "enctype" of elements\' form must be "' + et + '" (for IE), "' + form.enctype + '" given.');}
}
for (var i = 0; i < form.elements.length; i++) { var e = form.elements[i]; if (e.name != null) { e.jshrSaveName = e.name; e.name = '';}
}
var tmpE = []; for (var i=0; i<queryText.length; i++) { var pair = queryText[i].split('=', 2); var e = document.createElement('INPUT'); e.type = 'hidden'; e.name = unescape(pair[0]); e.value = pair[1] != null? unescape(pair[1]) : ''; form.appendChild(e); tmpE[tmpE.length] = e;}
for (var i = 0; i < queryElem.length; i++) queryElem[i][1].name = queryElem[i][0]; document.body.insertBefore(div, document.body.lastChild); this._span = div; var sv = {}; sv.enctype = form.enctype; form.enctype = "multipart/form-data"; sv.action = form.action; form.action = url; sv.method = form.method; form.method = method; sv.target = form.target; form.target = iframe.name; sv.onsubmit = form.onsubmit; form.onsubmit = null; form.submit(); for (var i in sv) form[i] = sv[i]; for (var i = 0; i < tmpE.length; i++) tmpE[i].parentNode.removeChild(tmpE[i]); for (var i = 0; i < form.elements.length; i++) { var e = form.elements[i]; if (e.jshrSaveName != null) { e.name = e.jshrSaveName; e.jshrSaveName = null;}
}
}, _cleanupScript: function() { var span = this._span; if (span) { this._span = null; setTimeout(function() { span.parentNode.removeChild(span);}, 50);}
if (this._id) { PENDING[this._id] = false;}
return false;}, _hash2query: function(content, prefix, queryText, queryElem) { if (prefix == null) prefix = ""; if (content instanceof Object) { for (var k in content) { var v = content[k]; if (v instanceof Function) continue; var curPrefix = prefix? prefix+'['+this.escape(k)+']' : this.escape(k); if (this._isFormElement(v)) { var tn = v.tagName.toLowerCase(); if (tn == 'form') { for (var i=0; i<v.elements.length; i++) { var e = v.elements[i]; if (e.name) queryElem[queryElem.length] = [e.name, e];}
} else if (tn == 'input' || tn == 'textarea' || tn == 'select') { queryElem[queryElem.length] = [curPrefix, v];} else { return this._error('Invalid FORM element detected: name=' + (e.name||'') + ', tag=' + e.tagName);}
} else if (v instanceof Object) { this._hash2query(v, curPrefix, queryText, queryElem);} else { if (v === null) continue; queryText[queryText.length] = curPrefix + "=" + this.escape('' + v);}
}
} else { queryText[queryText.length] = content;}
return true;}, _isFormElement: function(e) { return e && e.ownerDocument && e.parentNode && e.parentNode.appendChild && e.tagName;}, _getSid: function() { var m = document.location.search.match(new RegExp('[&?]'+this.session_name+'=([^&?]*)')); var sid = null; if (m) { sid = m[1];} else { var m = document.cookie.match(new RegExp('(;|^)\\s*'+this.session_name+'=([^;]*)')); if (m) sid = m[2];}
return sid;}, _changeReadyState: function(s, reset) { with (this) { if (reset) { status = statusText = responseJS = null; responseText = '';}
readyState = s; if (onreadystatechange) onreadystatechange();}}, escape: function(s) { return escape(s).replace(new RegExp('\\+','g'), '%2B');}
}
})();