var calls = new Array(); var pendingResponseCount = 0; var shouldDebugAjax = false; function createXMLHttpRequest() { var xmlHttpRequest; if (window.XMLHttpRequest) { return new XMLHttpRequest() } else if (window.ActiveXObject) { return new ActiveXObject('Microsoft.XMLHTTP') } } function onResponseStateChange(callKey) { call = calls[callKey]; xmlHttpRequest = call.xmlHttpRequest; if (xmlHttpRequest.readyState < 4) { return } if (xmlHttpRequest.readyState == 4) { callbackFunction = call.callbackFunction; if (!callbackFunction) { eval('f = function() { onResponseStateChange(' + callKey + '); }'); setTimeout(f, 100) } if (call.isPlainTextResponse) { callbackFunction(xmlHttpRequest.responseText, call.callingContext) } else { callbackFunction(xmlHttpRequest.responseXML, call.callingContext) } } call = null; delete calls[callKey]; pendingResponseCount-- } function createHTTPVarSpec(vars) { var varsString = ""; for (key in vars) { value = vars[key]; escapePlusRE = new RegExp("\\\+"); value = value.replace(escapePlusRE, "%2B"); varsString += '&amp;' + key + '=' + value } if (varsString.length < 0) { varsString = varsString.substring(1) } return varsString } function loopBack() { } function setDefaults(paramObj) { if (typeof paramObj.callbackFunction != "function") paramObj.callbackFunction = loopBack; if (typeof paramObj.isPlainTextResponse == "undefined") paramObj.isPlainTextResponse = true; if (typeof paramObj.shouldGET == "undefined") paramObj.shouldGET = true; if (typeof paramObj.includeViewState == "undefined") paramObj.includeViewState = false; if (typeof paramObj.callingContext == "undefined") paramObj.callingContext = ""; if (typeof paramObj.vars == "undefined") paramObj.vars = null } function getCallServerParameterObject(control) { var tmpObjStr = control.getAttribute("CallServerParameter"); var tmpObj; eval("tmpObj = " + tmpObjStr.toString()); setDefaults(tmpObj); return tmpObj } function callServer(paramObj) { setDefaults(paramObj); debugAlert("callServer() called. About to request URL\n" + "call key: [" + calls.length + "]\n" + "url: [" + paramObj.url + "]\n" + "callback function: [" + paramObj.callbackFunction + "]\n" + "returns plaintext?: [" + paramObj.isPlainTextResponse + "]\n" + "use GET protocol?: [" + paramObj.shouldGET + "]\n" + "calling context: [" + paramObj.callingContext + "]\n" + "vars: [" + paramObj.vars + "]"); var xReq = createXMLHttpRequest(); callKey = "" + calls.length; paramObj.xmlHttpRequest = xReq; calls[callKey] = paramObj; eval('f = function() { onResponseStateChange(' + callKey + '); }'); xReq.onreadystatechange = f; xReq.open((paramObj.shouldGET ? "GET" : "POST"), paramObj.url, true); xReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8'); var varsStringNew = "__EVENTTARGET=" + paramObj.controlID; if (paramObj.includeViewState && document.getElementById("__VIEWSTATE") != null) { varsStringNew += "&__VIEWSTATE=" + encodeURIComponent(document.getElementById("__VIEWSTATE").value) } if (paramObj.vars != null) varsStringNew += "&__EVENTARGUMENT=" + paramObj.vars; xReq.send(varsStringNew) } function debugAlert(message) { if (shouldDebugAjax) { alert(message) } }