quasicms/assets/js/_core/post.js

////////////////////////////////////////////
// PostBack and AjaxPostBack
////////////////////////////////////////////

	qcodo.postBack = function(strForm, strControl, strEvent, strParameter) {
		var objForm = document.getElementById(strForm);
		objForm.Qform__FormControl.value = strControl;
		objForm.Qform__FormEvent.value = strEvent;
		objForm.Qform__FormParameter.value = strParameter;
		objForm.Qform__FormCallType.value = "Server";
		objForm.Qform__FormUpdates.value = this.formUpdates();
		objForm.Qform__FormCheckableControls.value = this.formCheckableControls(strForm, "Server");
		objForm.submit();
	};

	qcodo.formUpdates = function() {
		var strToReturn = "";
		for (var strControlId in qcodo.controlModifications)
			for (var strProperty in qcodo.controlModifications[strControlId])
				strToReturn += strControlId + " " + strProperty + " " + qcodo.controlModifications[strControlId][strProperty] + "\n";
		qcodo.controlModifications = new Object;
		return strToReturn;
	};

	qcodo.formCheckableControls = function(strForm, strCallType) {
		var objForm = document.getElementById(strForm);
		var strToReturn = "";

		for (var intIndex = 0; intIndex < objForm.elements.length; intIndex++) {
			if (((objForm.elements[intIndex].type == "checkbox") ||
				 (objForm.elements[intIndex].type == "radio")) &&
				((strCallType == "Ajax") ||
				(!objForm.elements[intIndex].disabled))) {

				// CheckBoxList
				if (objForm.elements[intIndex].id.indexOf('[') >= 0) {
					if (objForm.elements[intIndex].id.indexOf('[0]') >= 0)
						strToReturn += " " + objForm.elements[intIndex].id.substring(0, objForm.elements[intIndex].id.length - 3);

				// RadioButtonList
				} else if (objForm.elements[intIndex].id.indexOf('_') >= 0) {
					if (objForm.elements[intIndex].id.indexOf('_0') >= 0)
						strToReturn += " " + objForm.elements[intIndex].id.substring(0, objForm.elements[intIndex].id.length - 2);

				// Standard Radio or Checkbox
				} else {
					strToReturn += " " + objForm.elements[intIndex].id;
				};
			};
		};

		if (strToReturn.length > 0)
			return strToReturn.substring(1);
		else
			return "";
	};

	qcodo.ajaxQueue = new Array();

	qcodo.postAjax = function(strForm, strControl, strEvent, strParameter, strWaitIconControlId) {
		// Only add if we're not unloaded
		if (!qc.unloadFlag) {
			if (qc.beforeUnloadFlag) {
				qc.beforeUnloadFlag = false;
			};

			// Figure out if Queue is Empty
			var blnQueueEmpty = false;
			if (qcodo.ajaxQueue.length == 0)
				blnQueueEmpty = true;

			// Enqueue the AJAX Request
			qcodo.ajaxQueue.push(new Array(strForm, strControl, strEvent, strParameter, strWaitIconControlId));

			// If the Queue was originally empty, call the Dequeue
			if (blnQueueEmpty)
				qcodo.dequeueAjaxQueue();
		};
	};
	
	qcodo.clearAjaxQueue = function() {
		qcodo.ajaxQueue = new Array();
	};

	qcodo.objAjaxWaitIcon = null;

	qcodo.dequeueAjaxQueue = function() {
		if (qcodo.ajaxQueue.length > 0) {
			strForm = this.ajaxQueue[0][0];
			strControl = this.ajaxQueue[0][1];
			strEvent = this.ajaxQueue[0][2];
			strParameter = this.ajaxQueue[0][3];
			strWaitIconControlId = this.ajaxQueue[0][4];

			// Display WaitIcon (if applicable)
			if (strWaitIconControlId) {
				this.objAjaxWaitIcon = this.getWrapper(strWaitIconControlId);
				if (this.objAjaxWaitIcon)
					this.objAjaxWaitIcon.style.display = 'inline';
			};

			var objForm = document.getElementById(strForm);
			objForm.Qform__FormControl.value = strControl;
			objForm.Qform__FormEvent.value = strEvent;
			objForm.Qform__FormParameter.value = strParameter;
			objForm.Qform__FormCallType.value = "Ajax";
			objForm.Qform__FormUpdates.value = qcodo.formUpdates();
			objForm.Qform__FormCheckableControls.value = this.formCheckableControls(strForm, "Ajax");

			var strPostData = "";
			for (var i = 0; i < objForm.elements.length; i++) {
				switch (objForm.elements[i].type) {
					case "checkbox":
					case "radio":
						if (objForm.elements[i].checked) {
							var strTestName = objForm.elements[i].name + "_";
							if (objForm.elements[i].id.substring(0, strTestName.length) == strTestName)
								strPostData += "&" + objForm.elements[i].name + "=" + objForm.elements[i].id.substring(strTestName.length);
							else
//								strPostData += "&" + objForm.elements[i].id + "=" + "1";
								strPostData += "&" + objForm.elements[i].id + "=" + objForm.elements[i].value;
						};
						break;

					case "select-multiple":
						var blnOneSelected = false;
						for (var intIndex = 0; intIndex < objForm.elements[i].options.length; intIndex++)
							if (objForm.elements[i].options[intIndex].selected) {
								strPostData += "&" + objForm.elements[i].name + "=";
								strPostData += objForm.elements[i].options[intIndex].value;
							};
						break;

					default:
						strPostData += "&" + objForm.elements[i].id + "=";

						// For Internationalization -- we must escape the element's value properly
						var strPostValue = objForm.elements[i].value;
						if (strPostValue) {
							strPostValue = strPostValue.replace(/\%/g, "%25");
							strPostValue = strPostValue.replace(/&/g, escape('&'));
							strPostValue = strPostValue.replace(/\+/g, "%2B");
						};
						strPostData += strPostValue;
						break;
				};
			};

			var strUri = objForm.action;

			var objRequest;
			if (window.XMLHttpRequest) {
				objRequest = new XMLHttpRequest();
			} else if (typeof ActiveXObject != "undefined") {
				objRequest = new ActiveXObject("Microsoft.XMLHTTP");
			};

			if (objRequest) {
				objRequest.open("POST", strUri, true);
				objRequest.setRequestHeader("Method", "POST " + strUri + " HTTP/1.1");
				objRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");

				objRequest.onreadystatechange = function() {
					if (objRequest.readyState == 4) {
						if (!qcodo.beforeUnloadFlag) {
							try {
								var objXmlDoc = objRequest.responseXML;
//								qcodo.logMessage(objRequest.responseText, true);
//								alert('AJAX Response Received');

								if (!objXmlDoc) {                                                        
                                    if(-1 != objRequest.responseText.indexOf('<!-- QCodo Error -->') ){
                                        var objErrorWindow = window.open('about:blank', 'qcodo_error','menubar=no,toolbar=no,location=no,status=no,scrollbars=yes,resizable=yes,width=1000,height=700,left=50,top=50');
                                        objErrorWindow.focus();
                                        objErrorWindow.document.write(objRequest.responseText);
                                    } else {
                                        if(objRequest.responseText.length > 0 && -1 == objRequest.responseText.indexOf('Qform__FormId') )
                                            alert('AJAX Response Error: ' + objRequest.responseText);
                                        //else
                                        //    alert('AJAX Response Error - XML missing.');
                                    }
                                    window.location.href = strUri;
									return;
								} else {
									var intLength = 0;
	
									// Go through Controls
									var objXmlControls = objXmlDoc.getElementsByTagName('control');
									intLength = objXmlControls.length;
	
									for (var intIndex = 0; intIndex < intLength; intIndex++) {
										var strControlId = objXmlControls[intIndex].attributes.getNamedItem('id').nodeValue;
	
										var strControlHtml = "";
										if (objXmlControls[intIndex].textContent)
											strControlHtml = objXmlControls[intIndex].textContent;
										else if (objXmlControls[intIndex].firstChild)
											strControlHtml = objXmlControls[intIndex].firstChild.nodeValue;
	
										// Perform Callback Responsibility
										if (strControlId == "Qform__FormState") {
											var objFormState = document.getElementById(strControlId);
											objFormState.value = strControlHtml;							
										} else {
											var objSpan = document.getElementById(strControlId + "_ctl");
											if (objSpan)
												objSpan.innerHTML = strControlHtml;
										};
									};
	
									// Go through Commands
									var objXmlCommands = objXmlDoc.getElementsByTagName('command');
									intLength = objXmlCommands.length;
	
									for (var intIndex = 0; intIndex < intLength; intIndex++) {
										if (objXmlCommands[intIndex] && objXmlCommands[intIndex].firstChild) {
											var strCommand = "";
											intChildLength = objXmlCommands[intIndex].childNodes.length;
											for (var intChildIndex = 0; intChildIndex < intChildLength; intChildIndex++)
												strCommand += objXmlCommands[intIndex].childNodes[intChildIndex].nodeValue;
											eval(strCommand);
										};
									};
								};
							} catch (objExc) {
                                    alert(objExc.message + "\r\non line number " + objExc.lineNumber + "\r\nin file " + objExc.fileName);
                                    alert("An error occurred during AJAX Response handling.\r\n\r\nThe error response will appear in a new popup.");
                                    var objErrorWindow = window.open('about:blank', 'qcodo_error','menubar=no,toolbar=no,location=no,status=no,scrollbars=yes,resizable=yes,width=1000,height=700,left=50,top=50');
                                    objErrorWindow.focus();
                                    objErrorWindow.document.write(objRequest.responseText);
                                    return;
							};
						};

						// Perform the Dequeue
						qcodo.ajaxQueue.shift();

						// Hid the WaitIcon (if applicable)
						if (qcodo.objAjaxWaitIcon)
							qcodo.objAjaxWaitIcon.style.display = 'none';

						// If there are still AjaxEvents in the queue, go ahead and process/dequeue them
						if (qcodo.ajaxQueue.length > 0)
							qcodo.dequeueAjaxQueue();
					};
				};

				objRequest.send(strPostData);
			};
		};
	};



//////////////////
// Qcodo Shortcuts
//////////////////

	qc.pB = qcodo.postBack;
	qc.pA = qcodo.postAjax;