/**
* jQuery.query - Query String Modification and Creation for jQuery
* Written by Blair Mitchelmore (blair DOT mitchelmore AT gmail DOT com)
* Licensed under the WTFPL (http://sam.zoy.org/wtfpl/).
* Date: 2009/8/13
*
* @author Blair Mitchelmore
* @version 2.1.7
*
**/
new function (settings) {
    // Various Settings
    var $separator = settings.separator || '&';
    var $spaces = settings.spaces === false ? false : true;
    var $suffix = settings.suffix === false ? '' : '[]';
    var $prefix = settings.prefix === false ? false : true;
    var $hash = $prefix ? settings.hash === true ? "#" : "?" : "";
    var $numbers = settings.numbers === false ? false : true;

    jQuery.query = new function () {
        var is = function (o, t) {
            return o != undefined && o !== null && (!!t ? o.constructor == t : true);
        };
        var parse = function (path) {
            var m, rx = /\[([^[]*)\]/g, match = /^([^[]+)(\[.*\])?$/.exec(path), base = match[1], tokens = [];
            while (m = rx.exec(match[2])) tokens.push(m[1]);
            return [base, tokens];
        };
        var set = function (target, tokens, value) {
            var o, token = tokens.shift();
            if (typeof target != 'object') target = null;
            if (token === "") {
                if (!target) target = [];
                if (is(target, Array)) {
                    target.push(tokens.length == 0 ? value : set(null, tokens.slice(0), value));
                } else if (is(target, Object)) {
                    var i = 0;
                    while (target[i++] != null);
                    target[--i] = tokens.length == 0 ? value : set(target[i], tokens.slice(0), value);
                } else {
                    target = [];
                    target.push(tokens.length == 0 ? value : set(null, tokens.slice(0), value));
                }
            } else if (token && token.match(/^\s*[0-9]+\s*$/)) {
                var index = parseInt(token, 10);
                if (!target) target = [];
                target[index] = tokens.length == 0 ? value : set(target[index], tokens.slice(0), value);
            } else if (token) {
                var index = token.replace(/^\s*|\s*$/g, "");
                if (!target) target = {};
                if (is(target, Array)) {
                    var temp = {};
                    for (var i = 0; i < target.length; ++i) {
                        temp[i] = target[i];
                    }
                    target = temp;
                }
                target[index] = tokens.length == 0 ? value : set(target[index], tokens.slice(0), value);
            } else {
                return value;
            }
            return target;
        };

        var queryObject = function (a) {
            var self = this;
            self.keys = {};

            if (a.queryObject) {
                jQuery.each(a.get(), function (key, val) {
                    self.SET(key, val);
                });
            } else {
                jQuery.each(arguments, function () {
                    var q = "" + this;
                    q = q.replace(/^[?#]/, ''); // remove any leading ? || #
                    q = q.replace(/[;&]$/, ''); // remove any trailing & || ;
                    if ($spaces) q = q.replace(/[+]/g, ' '); // replace +'s with spaces

                    jQuery.each(q.split(/[&;]/), function () {
                        var key = decodeURIComponent(this.split('=')[0] || "");
                        var val = decodeURIComponent(this.split('=')[1] || "");

                        if (!key) return;

                        if ($numbers) {
                            if (/^[+-]?[0-9]+\.[0-9]*$/.test(val)) // simple float regex
                                val = parseFloat(val);
                            else if (/^[+-]?[0-9]+$/.test(val)) // simple int regex
                                val = parseInt(val, 10);
                        }

                        val = (!val && val !== 0) ? true : val;

                        if (val !== false && val !== true && typeof val != 'number')
                            val = val;

                        self.SET(key, val);
                    });
                });
            }
            return self;
        };

        queryObject.prototype = {
            queryObject: true,
            has: function (key, type) {
                var value = this.get(key);
                return is(value, type);
            },
            GET: function (key) {
                if (!is(key)) return this.keys;
                var parsed = parse(key), base = parsed[0], tokens = parsed[1];
                var target = this.keys[base];
                while (target != null && tokens.length != 0) {
                    target = target[tokens.shift()];
                }
                return typeof target == 'number' ? target : target || "";
            },
            get: function (key) {
                var target = this.GET(key);
                if (is(target, Object))
                    return jQuery.extend(true, {}, target);
                else if (is(target, Array))
                    return target.slice(0);
                return target;
            },
            SET: function (key, val) {
                var value = !is(val) ? null : val;
                var parsed = parse(key), base = parsed[0], tokens = parsed[1];
                var target = this.keys[base];
                this.keys[base] = set(target, tokens.slice(0), value);
                return this;
            },
            set: function (key, val) {
                return this.copy().SET(key, val);
            },
            REMOVE: function (key) {
                return this.SET(key, null).COMPACT();
            },
            remove: function (key) {
                return this.copy().REMOVE(key);
            },
            EMPTY: function () {
                var self = this;
                jQuery.each(self.keys, function (key, value) {
                    delete self.keys[key];
                });
                return self;
            },
            load: function (url) {
                var hash = url.replace(/^.*?[#](.+?)(?:\?.+)?$/, "$1");
                var search = url.replace(/^.*?[?](.+?)(?:#.+)?$/, "$1");
                return new queryObject(url.length == search.length ? '' : search, url.length == hash.length ? '' : hash);
            },
            empty: function () {
                return this.copy().EMPTY();
            },
            copy: function () {
                return new queryObject(this);
            },
            COMPACT: function () {
                function build(orig) {
                    var obj = typeof orig == "object" ? is(orig, Array) ? [] : {} : orig;
                    if (typeof orig == 'object') {
                        function add(o, key, value) {
                            if (is(o, Array))
                                o.push(value);
                            else
                                o[key] = value;
                        }
                        jQuery.each(orig, function (key, value) {
                            if (!is(value)) return true;
                            add(obj, key, build(value));
                        });
                    }
                    return obj;
                }
                this.keys = build(this.keys);
                return this;
            },
            compact: function () {
                return this.copy().COMPACT();
            },
            toString: function () {
                var i = 0, queryString = [], chunks = [], self = this;
                var encode = function (str) {
                    str = str + "";
                    if ($spaces) str = str.replace(/ /g, "+");
                    return encodeURIComponent(str);
                };
                var addFields = function (arr, key, value) {
                    if (!is(value) || value === false) return;
                    var o = [encode(key)];
                    if (value !== true) {
                        o.push("=");
                        o.push(encode(value));
                    }
                    arr.push(o.join(""));
                };
                var build = function (obj, base) {
                    var newKey = function (key) {
                        return !base || base == "" ? [key].join("") : [base, "[", key, "]"].join("");
                    };
                    jQuery.each(obj, function (key, value) {
                        if (typeof value == 'object')
                            build(value, newKey(key));
                        else
                            addFields(chunks, newKey(key), value);
                    });
                };

                build(this.keys);

                if (chunks.length > 0) queryString.push($hash);
                queryString.push(chunks.join($separator));

                return queryString.join("");
            }
        };

        return new queryObject(location.search, location.hash);
    };
} (jQuery.query || {});  // Pass in jQuery.query as settings object

/*构造搜索URL*/
/*说明：此函数用于构造搜索链接，函数必须带一个参数（abc.aspx,即原始链接），其他参数（表单对象ID值）可选*/
/*使用：
    var searchUrl = BuildSearchUrl("abc.aspx","txtKeyword","txtStartDate","txtEndDate");
    window.location.href = searchUrl;
    则searchUrl的值为：abc.aspx?txtKeyword=hello world&txtStartDate=2010-12-17&txtEndDate=2010-12-30
*/
function BuildSearchUrl(sourceUrl) {
    $.query.EMPTY();
    var $setquery = $.query.SET("searchitem", Math.random());
    for (n = 1; n < arguments.length; n++) {
        var $id = $("#" + arguments[n]); //表单元素对象
        var _nodeval; //表单元素对象的值
        switch ($id.attr("tagName").toUpperCase()) {
            case "INPUT":
                switch ($id.attr("type")) {
                    case "checkbox":
                    case "radio":
                        if ($id[0].checked) {
                            _nodeval = $id.val();
                        } else { _nodeval = ""; }
                        break;
                    default:
                        _nodeval = $id.val();
                        break;
                }
                break;
            case "SELECT":
                _nodeval = $id.find("option:selected").val();
                break;
            case "TEXTAREA":
                _nodeval = $id.html();
                break;
            case "IMG":
                _nodeval = $id.attr("src");
                break;
        }
        if (_nodeval == "" || $.trim(_nodeval.toString()).length <= 0) {
            $.query.REMOVE(arguments[n]);
            continue;
        }
        $setquery.SET(arguments[n], _nodeval);
    }
    return sourceUrl + $setquery.toString();
}

/*使用查询字符串的值绑定表单对象*/
/*说明：此函数能截取查询字符串的值，并将值填充到各表单元素当中;
        此函数可以接受多个参数，每个参数均为要填充表单对象的ID值
*/
/*使用：
    BindFormObject("txtKeyword","txtStartDate","txtEndDate");
    则对应表单对象将获得相关值
*/
function BindFormObject() {
    for (n = 0; n < arguments.length; n++) {
        var $id = $("#" + arguments[n]);
        var _nodeval = $.query.get(arguments[n]);
        switch ($id.attr("tagName").toUpperCase()) {
            case "INPUT":
                switch ($id.attr("type")) {
                    case "checkbox":
                    case "radio":
                        $id.attr("checked", _nodeval);
                        break;
                    case "hidden":
                    case "text":
                        if (_nodeval.toString() == "true") {
                            $id.val("");
                        }
                        else {
                            $id.val(_nodeval);
                        }
                        break;
                    default:
                        try {

                            if (_nodeval.toString() == true) {
                                $id.val("");
                            }
                            else {
                                $id.val(_nodeval);
                            }
                        }
                        catch (e) {
                        }
                        break;
                }
                break;
            case "SELECT":
                $id.val(_nodeval);
                break;
            case "TEXTAREA":
                $id.html(_nodeval);
                break;
            case "IMG":
                $id.attr("src", _nodeval);
                break;
        }
    }
}