//--------------------------------------------------------------
// 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;
            this.onLoading(false);
        }
    },
    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;
        try {   ////Shove ��ԭ�������� try
            var r = this.onTimeout(this.duration, this);
            if (typeof r == "undefined" || r != false) {
                this.abort();
            } else {
                this.timeoutTimer = setTimeout(this.timeout.bind(this), AjaxPro.timeoutPeriod);
            }
        }
        catch (e) {
        }
    },
    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);
    }
};