function DWREngine()
{ }
DWREngine.XMLHttpRequest = 1; DWREngine.IFrame = 2; DWREngine.setErrorHandler = function(handler)
{ DWREngine._errorHandler = handler;}; DWREngine.setWarningHandler = function(handler)
{ DWREngine._warningHandler = handler;}; DWREngine.setPreHook = function(handler)
{ DWREngine._preHook = handler;}; DWREngine.setPostHook = function(handler)
{ DWREngine._postHook = handler;}; DWREngine.setMethod = function(newmethod)
{ if (newmethod != DWREngine.XMLHttpRequest && newmethod != DWREngine.IFrame)
{ if (DWREngine._errorHandler)
{ DWREngine._errorHandler("Remoting method must be one of DWREngine.XMLHttpRequest or DWREngine.IFrame");}
return;}
DWREngine._method = newmethod;}; DWREngine.setVerb = function(verb)
{ if (verb != "GET" && verb != "POST")
{ if (DWREngine._errorHandler)
{ DWREngine._errorHandler("Remoting verb must be one of GET or POST");}
return;}
DWREngine._verb = verb;}; DWREngine.setOrdered = function(ordered)
{ DWREngine._ordered = ordered;}; DWREngine.defaultMessageHandler = function(message)
{ if (typeof message == "object" && message.name == "Error" && message.description)
{ alert("Error: " + message.description);}
else
{ alert(message);}
}; DWREngine.beginBatch = function()
{ if (DWREngine._batch)
{ if (DWREngine._errorHandler)
{ DWREngine._errorHandler("Batch already started.");}
return;}
DWREngine._batch = {}; DWREngine._batch.map = {}; DWREngine._batch.paramCount = 0; DWREngine._batch.map.callCount = 0; DWREngine._batch.metadata = {};}; DWREngine.endBatch = function()
{ if (DWREngine._batch == null)
{ if (DWREngine._errorHandler)
{ DWREngine._errorHandler("No batch in progress.");}
return;}
if (!DWREngine._ordered)
{ DWREngine._sendData(DWREngine._batch); DWREngine._batches[DWREngine._batches.length] = DWREngine._batch;}
else
{ if (DWREngine._batches.length == 0)
{ DWREngine._sendData(DWREngine._batch); DWREngine._batches[DWREngine._batches.length] = DWREngine._batch;}
else
{ DWREngine._batchQueue[DWREngine._batchQueue.length] = DWREngine._batch;}
}
DWREngine._batch = null;}; DWREngine._errorHandler = DWREngine.defaultMessageHandler; DWREngine._warningHandler = DWREngine.defaultMessageHandler; DWREngine._preHook = null; DWREngine._postHook = null; DWREngine._batches = []; DWREngine._batchQueue = []; DWREngine._callbacks = {}; DWREngine._method = DWREngine.XMLHttpRequest; DWREngine._verb = "POST"; DWREngine._ordered = false; DWREngine._batch = null; DWREngine._handleResponse = function(id, reply)
{ var func = DWREngine._callbacks[id]; DWREngine._callbacks[id] = null; if (func)
{ try
{ func(reply);}
catch (ex)
{ if (DWREngine._errorHandler)
{ DWREngine._errorHandler(ex);}
}
}
else
{ if (reply)
{ if (DWREngine._warningHandler)
{ DWREngine._warningHandler("Internal Error: Missing callback for id='" + id + "'");}
}
}
}; DWREngine._handleError = function(id, reason)
{ if (DWREngine._errorHandler)
{ DWREngine._errorHandler(reason);}
}; DWREngine._finalize = function(batch)
{ DWREngine._removeNode(batch.div); DWREngine._removeNode(batch.iframe); DWREngine._removeNode(batch.form); if (DWREngine._postHook)
{ DWREngine._postHook();}
for (var i = 0; i < DWREngine._batches.length; i++)
{ if (DWREngine._batches[i] == batch)
{ DWREngine._batches.splice(i, 1); break;}
}
if (DWREngine._batchQueue.length != 0)
{ var batch = DWREngine._batchQueue.shift(); DWREngine._sendData(batch); DWREngine._batches[DWREngine._batches.length] = batch;}
}; DWREngine._removeNode = function(node)
{ if (node)
{ node.parentNode.removeChild(node);}
}; DWREngine._execute = function(path, scriptName, methodName, vararg_params)
{ var singleShot = false; if (DWREngine._batch == null)
{ DWREngine.beginBatch(); singleShot = true;}
var args = []; for (var i = 0; i < arguments.length - 3; i++)
{ args[i] = arguments[i + 3];}
if (DWREngine._batch.path == null)
{ DWREngine._batch.path = path;}
else
{ if (DWREngine._batch.path != path)
{ if (DWREngine._errorHandler)
{ DWREngine._errorHandler("Can't batch requests to multiple DWR Servlets.");}
return;}
}
var func; var params; var metadata; var firstArg = args[0]; var lastArg = args[args.length - 1]; if (typeof firstArg == "function")
{ func = args.shift(); params = args; metadata = {};}
else if (typeof lastArg == "function")
{ func = args.pop(); params = args; metadata = {};}
else if (typeof lastArg == "object" && lastArg.callback != null && typeof lastArg.callback == "function")
{ metadata = args.pop(); params = args; func = metadata.callback;}
else if (firstArg == null)
{ if (lastArg == null && args.length > 2)
{ if (DWREngine._warningHandler)
{ DWREngine._warningHandler("Ambiguous nulls at start and end of parameter list. Which is the callback function?");}
}
func = args.shift(); params = args; metadata = {};}
else if (lastArg == null)
{ func = args.pop(); params = args; metadata = {};}
else
{ if (DWREngine._warningHandler)
{ DWREngine._warningHandler("Missing callback function or metadata object.");}
return;}
var random = Math.floor(Math.random() * 10001); var id = (random + "_" + new Date().getTime()).toString(); DWREngine._callbacks[id] = func; var prefix = "c" + DWREngine._batch.map.callCount + "-"; if (metadata != null)
{ for (var prop in metadata)
{ DWREngine._batch.metadata[prop] = metadata[prop];}
}
DWREngine._batch.map[prefix + "scriptName"] = scriptName; DWREngine._batch.map[prefix + "methodName"] = methodName; DWREngine._batch.map[prefix + "id"] = id; DWREngine._addSerializeFunctions(); for (i = 0; i < params.length; i++)
{ DWREngine._serializeAll(DWREngine._batch, [], params[i], prefix + "param" + i);}
DWREngine._removeSerializeFunctions(); DWREngine._batch.map.callCount++; if (singleShot)
{ DWREngine.endBatch();}
}; DWREngine._abortRequest = function(batch)
{ if (batch && batch.metadata && batch.completed != true)
{ batch.completed = true; if (batch.req != null)
{ batch.req.abort(); if (batch.metadata.errorHandler)
{ if (typeof batch.metadata.errorHandler == "string")
{ eval(batch.metadata.errorHandler);}
else if (typeof batch.metadata.errorHandler == "function")
{ batch.metadata.errorHandler();}
else
{ if (DWREngine._warningHandler)
{ DWREngine._warningHandler("errorHandler is neither a string (for eval()) or a function.");}
}
}
}
}
}; DWREngine._sendData = function(batch)
{ if (DWREngine._preHook)
{ DWREngine._preHook();}
if (batch.metadata && batch.metadata.timeout)
{ var funcReq = function() { DWREngine._abortRequest(batch);}; setTimeout(funcReq, batch.metadata.timeout);}
if (DWREngine._method == DWREngine.XMLHttpRequest)
{ if (window.XMLHttpRequest)
{ batch.req = new XMLHttpRequest();}
else if (window.ActiveXObject && !(navigator.userAgent.indexOf('Mac') >= 0 && navigator.userAgent.indexOf("MSIE") >= 0))
{ batch.req = new window.ActiveXObject("Microsoft.XMLHTTP");}
}
var statsInfo; if (batch.map.callCount == 1)
{ statsInfo = batch.map["c0-scriptName"] + "." + batch.map["c0-methodName"];}
else
{ statsInfo = "Multiple." + batch.map.callCount;}
var query = "ajax=true&"; var prop; if (batch.req)
{ batch.map.xml = true; batch.req.onreadystatechange = function() { DWREngine._stateChange(batch);}; if (DWREngine._verb == "GET" || navigator.userAgent.indexOf('Safari') >= 0)
{ for (prop in batch.map)
{ query += encodeURIComponent(prop) + "=" + encodeURIComponent(batch.map[prop]) + "&";}
query = query.substring(0, query.length - 1); try
{ batch.req.open("GET", batch.path + "?" + query); batch.req.send(null);}
catch (ex)
{ if (DWREngine._errorHandler)
{ DWREngine._errorHandler(ex);}
}
}
else
{ for (prop in batch.map)
{ query += prop + "=" + batch.map[prop] + "&";}
try
{ batch.req.open("POST", batch.path + "?" + statsInfo, true); batch.req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); batch.req.send(query);}
catch (ex)
{ if (DWREngine._errorHandler)
{ DWREngine._errorHandler(ex);}
}
}
}
else
{ batch.map.xml = false; var idname = "dwr-if-" + batch.map["c0-id"]; batch.div = document.createElement('div'); batch.div.innerHTML = "<iframe id='" + idname + "' name='" + idname + "'></iframe>"; document.body.appendChild(batch.div); batch.iframe = document.getElementById(idname); batch.iframe.setAttribute('style', 'width:0px; height:0px; border:0px;'); if (DWREngine._verb == "GET")
{ for (prop in batch.map)
{ query += encodeURIComponent(prop) + "=" + encodeURIComponent(batch.map[prop]) + "&";}
query = query.substring(0, query.length - 1); batch.iframe.setAttribute('src', batch.path + "?" + query); document.body.appendChild(batch.iframe);}
else
{ batch.form = document.createElement('form'); batch.form.setAttribute('id', 'dwr-form'); batch.form.setAttribute('action', batch.path); batch.form.setAttribute('target', idname); batch.form.target = idname; batch.form.setAttribute('method', 'post'); for (prop in batch.map)
{ var formInput = document.createElement('input'); formInput.setAttribute('type', 'hidden'); formInput.setAttribute('name', prop); formInput.setAttribute('value', batch.map[prop]); batch.form.appendChild(formInput);}
document.body.appendChild(batch.form); batch.form.submit();}
}
}; DWREngine._stateChange = function(batch)
{ if (batch.req.readyState == 4)
{ try
{ if (batch.req.status && batch.req.status == 200)
{ batch.completed = true; var response = batch.req.responseText; if (response.indexOf("****/") > 0) response = "/****" + response; var footerPos = response.indexOf("/* EOF CFAJAX */"); if (footerPos > 0) response = response.substring(0, footerPos); eval(response);}
else
{ if (batch.metadata != null)
{ DWREngine._abortRequest(batch);}
else if (DWREngine._errorHandler)
{ var response = batch.req.responseText; if (response.indexOf("****/") > 0) response = "/****" + response; DWREngine._errorHandler(response);}
}
}
catch (ex)
{ if (batch.metadata != null)
{ DWREngine._abortRequest(batch);}
else if (DWREngine._errorHandler)
{ DWREngine._errorHandler(ex);}
}
DWREngine._finalize(batch);}
}; DWREngine._addSerializeFunctions = function()
{ Object.prototype.dwrSerialize = DWREngine._serializeObject; Array.prototype.dwrSerialize = DWREngine._serializeArray; Boolean.prototype.dwrSerialize = DWREngine._serializeBoolean; Number.prototype.dwrSerialize = DWREngine._serializeNumber; String.prototype.dwrSerialize = DWREngine._serializeString; Date.prototype.dwrSerialize = DWREngine._serializeDate;}; DWREngine._removeSerializeFunctions = function()
{ delete Object.prototype.dwrSerialize; delete Array.prototype.dwrSerialize; delete Boolean.prototype.dwrSerialize; delete Number.prototype.dwrSerialize; delete String.prototype.dwrSerialize; delete Date.prototype.dwrSerialize;}; DWREngine._serializeAll = function(batch, referto, data, name)
{ if (data == null)
{ batch.map[name] = "null:null"; return;}
switch (typeof data)
{ case "boolean":
batch.map[name] = "boolean:" + data; break; case "number":
batch.map[name] = "number:" + data; break; case "string":
batch.map[name] = "string:" + encodeURIComponent(data); break; case "object":
if (data.dwrSerialize)
{ batch.map[name] = data.dwrSerialize(batch, referto, data, name);}
else
{ if (DWREngine._warningHandler)
{ DWREngine._warningHandler("Object without dwrSerialize: " + typeof data + ", attempting default converter.");}
batch.map[name] = "default:" + data;}
break; case "function":
break; default:
if (DWREngine._warningHandler)
{ DWREngine._warningHandler("Unexpected type: " + typeof data + ", attempting default converter.");}
batch.map[name] = "default:" + data; break;}
}; DWREngine._lookup = function(referto, data, name)
{ var lookup; for (var i = 0; i < referto.length; i++)
{ if (referto[i].data == data)
{ lookup = referto[i]; break;}
}
if (lookup)
{ return "reference:" + lookup.name;}
referto.push({ data:data, name:name }); return null;}; DWREngine._serializeObject = function(batch, referto, data, name)
{ var ref = DWREngine._lookup(referto, this, name); if (ref)
{ return ref;}
var reply = "Object:{"; var element; for (element in this)
{ if (element != "dwrSerialize")
{ batch.paramCount++; var childName = "c" + DWREngine._batch.map.callCount + "-e" + batch.paramCount; DWREngine._serializeAll(batch, referto, this[element], childName); reply += encodeURIComponent(element); reply += ":reference:"; reply += childName; reply += ", ";}
}
reply = reply.substring(0, reply.length - 2); reply += "}"; return reply;}; DWREngine._serializeArray = function(batch, referto, data, name)
{ var ref = DWREngine._lookup(referto, this, name); if (ref)
{ return ref;}
var reply = "Array:["; for (var i = 0; i < this.length; i++)
{ if (i != 0)
{ reply += ",";}
batch.paramCount++; var childName = "c" + DWREngine._batch.map.callCount + "-e" + batch.paramCount; DWREngine._serializeAll(batch, referto, this[i], childName); reply += "reference:"; reply += childName;}
reply += "]"; return reply;}; DWREngine._serializeBoolean = function(batch, referto, data, name)
{ return "Boolean:" + this;}; DWREngine._serializeNumber = function(batch, referto, data, name)
{ return "Number:" + this;}; DWREngine._serializeString = function(batch, referto, data, name)
{ return "String:" + encodeURIComponent(this);}; DWREngine._serializeDate = function(batch, referto, data, name)
{ return "Date:[ " + this.getUTCFullYear() + ", " + this.getUTCMonth() + ", " + this.getUTCDate() + ", " + this.getUTCHours() + ", " + this.getUTCMinutes() + ", " + this.getUTCSeconds() + ", " + this.getUTCMilliseconds() + "]";}; DWREngine._unserializeDocument = function(xml)
{ var parser = new DOMParser(); var dom = parser.parseFromString(xml, "text/xml"); if (!dom.documentElement || dom.documentElement.tagName == "parsererror")
{ var message = dom.documentElement.firstChild.data; message += "\n" + dom.documentElement.firstChild.nextSibling.firstChild.data; throw message;}
return dom;}; DWREngine._deprecated = function()
{ if (DWREngine._warningHandler)
{ DWREngine._warningHandler("dwrXxx() functions are deprecated. Please convert to DWREngine.xxx()");}
};