//--------------------------------------------------------------
// Copyright (C) 2006 Michael Schwarz (http://www.ajaxpro.info).
// All rights reserved.
//--------------------------------------------------------------

// core.js
Object.extend(Function.prototype, 
{
	getArguments: function()
	{
		var args = [];
		for (var i = 0; i < this.arguments.length; i++)
		{
			args.push(this.arguments[i]);
		}
		return args;
	}
}, false);

var MS = { "Browser": {} };

Object.extend(MS.Browser, {
	isIE: navigator.userAgent.indexOf('MSIE') != -1,
	isFirefox: navigator.userAgent.indexOf('Firefox') != -1,
	isOpera: window.opera != null
}, false);

var AjaxPro = {};

AjaxPro.IFrameXmlHttp = function() { };
AjaxPro.IFrameXmlHttp.prototype = {
	onreadystatechange: null, headers: [], method: "POST", url: null, async: true, iframe: null,
	status: 0, readyState: 0, responseText: null,
	abort: function()
	{
	},
	readystatechanged: function()
	{
		var doc = this.iframe.contentDocument || this.iframe.document;
		if (doc != null && doc.readyState == "complete" && doc.body != null && doc.body.res != null)
		{
			this.status = 200;
			this.statusText = "OK";
			this.readyState = 4;
			this.responseText = doc.body.res;
			this.onreadystatechange();
			return;
		}
		setTimeout(this.readystatechanged.bind(this), 10);
	},
	open: function(method, url, async)
	{
		if (async == false)
		{
			alert("Synchronous call using IFrameXMLHttp is not supported.");
			return;
		}
		if (this.iframe == null)
		{
			var iframeID = "hans";
			if (document.createElement && document.documentElement &&
				(window.opera || navigator.userAgent.indexOf('MSIE 5.0') == -1))
			{
				var ifr = document.createElement('iframe');
				ifr.setAttribute('id', iframeID);
				ifr.style.visibility = 'hidden';
				ifr.style.position = 'absolute';
				ifr.style.width = ifr.style.height = ifr.borderWidth = '0px';

				this.iframe = document.getElementsByTagName('body')[0].appendChild(ifr);
			}
			else if (document.body && document.body.insertAdjacentHTML)
			{
				document.body.insertAdjacentHTML('beforeEnd', '<iframe name="' + iframeID + '" id="' + iframeID + '" style="border:1px solid black;display:none"></iframe>');
			}
			if (window.frames && window.frames[iframeID])
			{
				this.iframe = window.frames[iframeID];
			}
			this.iframe.name = iframeID;
			this.iframe.document.open();
			this.iframe.document.write("<" + "html><" + "body></" + "body></" + "html>");
			this.iframe.document.close();
		}
		this.method = method;
		this.url = url;
		this.async = async;
	},
	setRequestHeader: function(name, value)
	{
		for (var i = 0; i < this.headers.length; i++)
		{
			if (this.headers[i].name == name)
			{
				this.headers[i].value = value;
				return;
			}
		}
		this.headers.push({ "name": name, "value": value });
	},
	getResponseHeader: function(name, value)
	{
		return null;
	},
	addInput: function(doc, form, name, value)
	{
		var ele;
		var tag = "input";
		if (value.indexOf("\n") >= 0)
		{
			tag = "textarea";
		}

		if (doc.all)
		{
			ele = doc.createElement("<" + tag + " name=\"" + name + "\" />");
		} else
		{
			ele = doc.createElement(tag);
			ele.setAttribute("name", name);
		}
		ele.setAttribute("value", value);
		form.appendChild(ele);
		ele = null;
	},
	send: function(data)
	{
		if (this.iframe == null)
		{
			return;
		}
		var doc = this.iframe.contentDocument || this.iframe.document;
		var form = doc.createElement("form");

		doc.body.appendChild(form);

		form.setAttribute("action", this.url);
		form.setAttribute("method", this.method);
		form.setAttribute("enctype", "application/x-www-form-urlencoded");

		for (var i = 0; i < this.headers.length; i++)
		{
			switch (this.headers[i].name.toLowerCase())
			{
				case "content-length":
				case "accept-encoding":
				case "content-type":
					break;
				default:
					this.addInput(doc, form, this.headers[i].name, this.headers[i].value);
			}
		}
		this.addInput(doc, form, "data", data);
		form.submit();

		setTimeout(this.readystatechanged.bind(this), 0);
	}
};

var progids = ["Msxml2.XMLHTTP.6.0", "Msxml2.XMLHTTP.3.0", "MSXML2.XMLHTTP", "Microsoft.XMLHTTP"];
var progid = null;

if (typeof ActiveXObject != "undefined")
{
	var ie7xmlhttp = false;
	if (typeof XMLHttpRequest == "object")
	{
		try { var o = new XMLHttpRequest(); ie7xmlhttp = true; } catch (e) { }
	}
	if (typeof XMLHttpRequest == "undefined" || !ie7xmlhttp)
	{
		XMLHttpRequest = function()
		{
			var xmlHttp = null;
			if (!AjaxPro.noActiveX)
			{
				if (progid != null)
				{
					return new ActiveXObject(progid);
				}
				for (var i = 0; i < progids.length && xmlHttp == null; i++)
				{
					try
					{
						xmlHttp = new ActiveXObject(progids[i]);
						progid = progids[i];

					} catch (e) { }
				}
			}
			if (xmlHttp == null && MS.Browser.isIE)
			{
				return new AjaxPro.IFrameXmlHttp();
			}
			return xmlHttp;
		};
	}
}

Object.extend(AjaxPro, {
	noOperation: function() { },
	onLoading: function() { },
	onError: function() { },
	onTimeout: function() { return true; },
	onStateChanged: function() { },
	cryptProvider: null,
	queue: null,
	token: "",
	version: "9.2.17.1",
	ID: "AjaxPro",
	noActiveX: false,
	timeoutPeriod: 15 * 1000,
	queue: null,
	noUtcTime: false,
	regExDate: function(str, p1, p2, offset, s)
	{
		str = str.substring(1).replace('"', '');
		var date = str;

		if (str.substring(0, 7) == "\\\/Date(")
		{
			str = str.match(/Date\((.*?)\)/)[1];
			date = "new Date(" + parseInt(str) + ")";
		}
		else
		{ // ISO Date 2007-12-31T23:59:59Z                                     
			var matches = str.split(/[-,:,T,Z]/);
			matches[1] = (parseInt(matches[1], 0) - 1).toString();
			date = "new Date(Date.UTC(" + matches.join(",") + "))";
		}
		return date;
	},
	parse: function(text)
	{
		// not yet possible as we still return new type() JSON
		//		if (!(!(/[^,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]/.test(
		//		text.replace(/"(\\.|[^"\\])*"/g, '')))  ))
		//			throw new Error("Invalid characters in JSON parse string.");                 

		var regEx = /(\"\d{4}-\d{2}-\d{2}T\d{2}:\d{2}.*?\")|(\"\\\/Date\(.*?\)\\\/")/g;
		text = text.replace(regEx, this.regExDate);

		return eval('(' + text + ')');
	},
	m: {
		'\b': '\\b',
		'\t': '\\t',
		'\n': '\\n',
		'\f': '\\f',
		'\r': '\\r',
		'"': '\\"',
		'\\': '\\\\'
	},
	toJSON: function(o)
	{
		if (o == null)
		{
			return "null";
		}
		var v = [];
		var i;
		var c = o.constructor;
		if (c == Number)
		{
			return isFinite(o) ? o.toString() : AjaxPro.toJSON(null);
		} else if (c == Boolean)
		{
			return o.toString();
		} else if (c == String)
		{
			if (/["\\\x00-\x1f]/.test(o))
			{
				o = o.replace(/([\x00-\x1f\\"])/g, function(a, b)
				{
					var c = AjaxPro.m[b];
					if (c)
					{
						return c;
					}
					c = b.charCodeAt();
					return '\\u00' +
						Math.floor(c / 16).toString(16) +
						(c % 16).toString(16);
				});
			}
			return '"' + o + '"';
		} else if (c == Array)
		{
			for (i = 0; i < o.length; i++)
			{
				v.push(AjaxPro.toJSON(o[i]));
			}
			return "[" + v.join(",") + "]";
		} else if (c == Date)
		{
			//			var d = {};
			//			d.__type = "System.DateTime";
			//			if(AjaxPro.noUtcTime == true) {
			//				d.Year = o.getFullYear();
			//				d.Month = o.getMonth() +1;
			//				d.Day = o.getDate();
			//				d.Hour = o.getHours();
			//				d.Minute = o.getMinutes();
			//				d.Second = o.getSeconds();
			//				d.Millisecond = o.getMilliseconds();
			//			} else {
			//				d.Year = o.getUTCFullYear();
			//				d.Month = o.getUTCMonth() +1;
			//				d.Day = o.getUTCDate();
			//				d.Hour = o.getUTCHours();
			//				d.Minute = o.getUTCMinutes();
			//				d.Second = o.getUTCSeconds();
			//				d.Millisecond = o.getUTCMilliseconds();
			//			}
			return AjaxPro.toJSON("/Date(" + new Date(Date.UTC(o.getUTCFullYear(), o.getUTCMonth(), o.getUTCDate(), o.getUTCHours(), o.getUTCMinutes(), o.getUTCSeconds(), o.getUTCMilliseconds())).getTime() + ")/");
		}
		if (typeof o.toJSON == "function")
		{
			return o.toJSON();
		}
		if (typeof o == "object")
		{
			for (var attr in o)
			{
				if (typeof o[attr] != "function")
				{
					v.push('"' + attr + '":' + AjaxPro.toJSON(o[attr]));
				}
			}
			if (v.length > 0)
			{
				return "{" + v.join(",") + "}";
			}
			return "{}";
		}
		return o.toString();
	},
	dispose: function()
	{
		if (AjaxPro.queue != null)
		{
			AjaxPro.queue.dispose();
		}
	}
}, false);

addEvent(window, "unload", AjaxPro.dispose);

AjaxPro.Request = function(url)
{
	this.url = url;
	this.xmlHttp = null;
};

AjaxPro.Request.prototype = {
	url: null,
	callback: null,
	onLoading: null,
	onError: null,
	onTimeout: null,
	onStateChanged: null,
	args: null,
	context: null,
	isRunning: false,
	abort: function()
	{
		if (this.timeoutTimer != null)
		{
			clearTimeout(this.timeoutTimer);
		}
		if (this.xmlHttp)
		{
			this.xmlHttp.onreadystatechange = AjaxPro.noOperation;
			this.xmlHttp.abort();
		}
		if (this.isRunning)
		{
			this.isRunning = false;
			if (typeof (this.onLoading) == "function")
			{
				try
				{
					this.onLoading(false);
				}
				catch (ex) { }
			}
		}
	},
	dispose: function()
	{
		this.abort();
	},
	getEmptyRes: function()
	{
		return {
			error: null,
			value: null,
			request: { method: this.method, args: this.args },
			context: this.context,
			duration: this.duration
		};
	},
	endRequest: function(res)
	{
		this.abort();
		if (res.error != null)
		{
			this.onError(res.error, this);
		}

		if (typeof this.callback == "function")
		{
			this.callback(res, this);
		}
	},
	mozerror: function()
	{
		if (this.timeoutTimer != null)
		{
			clearTimeout(this.timeoutTimer);
		}
		var res = this.getEmptyRes();
		res.error = { Message: "Unknown", Type: "ConnectFailure", Status: 0 };
		this.endRequest(res);
	},
	doStateChange: function()
	{
		this.onStateChanged(this.xmlHttp.readyState, this);
		if (this.xmlHttp.readyState != 4 || !this.isRunning)
		{
			return;
		}
		this.duration = new Date().getTime() - this.__start;
		if (this.timeoutTimer != null)
		{
			clearTimeout(this.timeoutTimer);
		}
		var res = this.getEmptyRes();
		if (this.xmlHttp.status == 200 && this.xmlHttp.statusText == "OK")
		{
			res = this.createResponse(res);
		} else
		{
			res = this.createResponse(res, true);
			res.error = { Message: this.xmlHttp.statusText, Type: "ConnectFailure", Status: this.xmlHttp.status };
		}

		this.endRequest(res);
	},
	createResponse: function(r, noContent)
	{
		if (!noContent)
		{
			if (typeof (this.xmlHttp.responseText) == "unknown")
			{
				r.error = { Message: "XmlHttpRequest error reading property responseText.", Type: "XmlHttpRequestException" };
				return r;
			}

			var responseText = "" + this.xmlHttp.responseText;

			if (AjaxPro.cryptProvider != null && typeof AjaxPro.cryptProvider.decrypt == "function")
			{
				responseText = AjaxPro.cryptProvider.decrypt(responseText);
			}

			if (this.xmlHttp.getResponseHeader("Content-Type") == "text/xml")
			{
				r.value = this.xmlHttp.responseXML;
			} else
			{
				if (responseText != null && responseText.trim().length > 0)
				{
					r.json = responseText;
					var v = null;
					v = AjaxPro.parse(responseText);
					if (v != null)
					{
						if (typeof v.value != "undefined") r.value = v.value;
						else if (typeof v.error != "undefined") r.error = v.error;
					}
				}
			}
		}
		/* if(this.xmlHttp.getResponseHeader("X-" + AjaxPro.ID + "-Cache") == "server") {
		r.isCached = true;
		} */
		return r;
	},
	timeout: function()
	{
		this.duration = new Date().getTime() - this.__start;
		var r = "undefined";
		if (typeof (this.onTimeout) == "function")
		{
			try
			{
				r = this.onTimeout(this.duration, this);
			}
			catch (ex) { }
		}
		if (typeof r == "undefined" || r != false)
		{
			this.abort();
		} else
		{
			this.timeoutTimer = setTimeout(this.timeout.bind(this), AjaxPro.timeoutPeriod);
		}
	},
	invoke: function(method, args, callback, context)
	{
		this.__start = new Date().getTime();

		// if(this.xmlHttp == null) {
		this.xmlHttp = new XMLHttpRequest();
		// }

		this.isRunning = true;
		this.method = method;
		this.args = args;
		this.callback = callback;
		this.context = context;

		var async = typeof (callback) == "function" && callback != AjaxPro.noOperation;

		if (async)
		{
			if (MS.Browser.isIE)
			{
				this.xmlHttp.onreadystatechange = this.doStateChange.bind(this);
			} else
			{
				this.xmlHttp.onload = this.doStateChange.bind(this);
				this.xmlHttp.onerror = this.mozerror.bind(this);
			}
			this.onLoading(true);
		}

		var json = AjaxPro.toJSON(args) + "";
		if (AjaxPro.cryptProvider != null && typeof AjaxPro.cryptProvider.encrypt == "function")
		{
			json = AjaxPro.cryptProvider.encrypt(json);
		}

		this.xmlHttp.open("POST", this.url, async);
		this.xmlHttp.setRequestHeader("Content-Type", "text/plain; charset=utf-8");
		this.xmlHttp.setRequestHeader("X-" + AjaxPro.ID + "-Method", method);

		if (AjaxPro.token != null && AjaxPro.token.length > 0)
		{
			this.xmlHttp.setRequestHeader("X-" + AjaxPro.ID + "-Token", AjaxPro.token);
		}

		/* if(!MS.Browser.isIE) {
		this.xmlHttp.setRequestHeader("Connection", "close");
		} */

		this.timeoutTimer = setTimeout(this.timeout.bind(this), AjaxPro.timeoutPeriod);

		try { this.xmlHttp.send(json); } catch (e) { } // IE offline exception

		if (!async)
		{
			return this.createResponse({ error: null, value: null });
		}

		return true;
	}
};

AjaxPro.RequestQueue = function(conc)
{
	this.queue = [];
	this.requests = [];
	this.timer = null;

	if (isNaN(conc)) { conc = 2; }

	for (var i = 0; i < conc; i++)
	{		// max 2 http connections
		this.requests[i] = new AjaxPro.Request();
		this.requests[i].callback = function(res)
		{
			var r = res.context;
			res.context = r[3][1];

			r[3][0](res, this);
		};
		this.requests[i].callbackHandle = this.requests[i].callback.bind(this.requests[i]);
	}

	this.processHandle = this.process.bind(this);
};

AjaxPro.RequestQueue.prototype = {
	process: function()
	{
		this.timer = null;
		if (this.queue.length == 0)
		{
			return;
		}
		for (var i = 0; i < this.requests.length && this.queue.length > 0; i++)
		{
			if (this.requests[i].isRunning == false)
			{
				var r = this.queue.shift();

				this.requests[i].url = r[0];
				this.requests[i].onLoading = r[3].length > 2 && r[3][2] != null && typeof r[3][2] == "function" ? r[3][2] : AjaxPro.onLoading;
				this.requests[i].onError = r[3].length > 3 && r[3][3] != null && typeof r[3][3] == "function" ? r[3][3] : AjaxPro.onError;
				this.requests[i].onTimeout = r[3].length > 4 && r[3][4] != null && typeof r[3][4] == "function" ? r[3][4] : AjaxPro.onTimeout;
				this.requests[i].onStateChanged = r[3].length > 5 && r[3][5] != null && typeof r[3][5] == "function" ? r[3][5] : AjaxPro.onStateChanged;

				this.requests[i].invoke(r[1], r[2], this.requests[i].callbackHandle, r);
				r = null;
			}
		}
		if (this.queue.length > 0 && this.timer == null)
		{
			this.timer = setTimeout(this.processHandle, 0);
		}
	},
	add: function(url, method, args, e)
	{
		this.queue.push([url, method, args, e]);
		if (this.timer == null)
		{
			this.timer = setTimeout(this.processHandle, 0);
		}
		// this.process();
	},
	abort: function()
	{
		this.queue.length = 0;
		if (this.timer != null)
		{
			clearTimeout(this.timer);
		}
		this.timer = null;
		for (var i = 0; i < this.requests.length; i++)
		{
			if (this.requests[i].isRunning == true)
			{
				this.requests[i].abort();
			}
		}
	},
	dispose: function()
	{
		for (var i = 0; i < this.requests.length; i++)
		{
			var r = this.requests[i];
			r.dispose();
		}
		this.requests.clear();
	}
};

AjaxPro.queue = new AjaxPro.RequestQueue(2); // 2 http connections

AjaxPro.AjaxClass = function(url)
{
	this.url = url;
};

AjaxPro.AjaxClass.prototype = {
	invoke: function(method, args, e)
	{

		if (e != null)
		{
			if (e.length != 6)
			{
				for (; e.length < 6; )
				{
					e.push(null); 
				}
			}
			if (e[0] != null && typeof (e[0]) == "function")
			{
				return AjaxPro.queue.add(this.url, method, args, e);
			}
		}
		var r = new AjaxPro.Request();
		r.url = this.url;
		return r.invoke(method, args);
	}
};