/** 
    @ Name : Kingwell Javascript Library 
    @ Author :kingwell 
    @ Date : 2012-8-22 
    @ Email : jinhua.leng##gmail.com 
    @ Version : 1.2 
    @ Update : http://kingwell-leng.iteye.com/blog/1570768 
    功能： 
    1:  $ID選擇 
    2： 事件繫結，事件移除，獲取事件目標 
    3： 阻止冒泡，阻止預設事件 
    4： 顯示隱藏 
    5： 去除HTML 
    6： 去除首尾空格 
    7： 獲取URL引數 
    8： Cookie操作，設定，刪除，獲取 
    9： 清除所有Cookie 
    10：表格排序 
    11: 動態轉入Javascript 
    12: 封裝Ajax 
    13：將HTML編碼 
    呼叫方法： 
    KW.x(); 
     */
 
  
    (function () {  
        if (!window.KW) {  
            window.KW = {};  
        };  
        window.KW = {  
            version : "1.2",  
            $ : function () { //$()函式  
                var elements = new Array();  
                for (var i = 0; i <= arguments.length; i++) {  
                    var
 
 element = arguments[i];  
                    //如果是一個字串那假設它是一個ID  
                    if (typeof element == 'string') {  
                        element = document.getElementById(element);  
                    }  
                    //如果只提供了一個引數,則立即返回這個引數  
                    if (arguments.length == 1
 
) {  
                        return element;  
                    }  
                    //否則，將它新增到陣列中  
                    elements.push(element);  
                }  
                return elements;  
            },  
            /*-------------------- 事件處理 --------------------*/  
            addEvent : function (oTarget, oType, fnHandler) { //-----新增事件;  
                var oT = typeof oTarget == "string" ? this.$(oTarget) : oTarget;  
                if (!oT) {  
                    alert('Not found \" ' + oTarget + ' \"');  
                    return false  
                };  
                if (oT.addEventListener) { //for DOM  
                    oT.addEventListener(oType, fnHandler, false);  
                } else if (oT.attachEvent) { //for IE  
                    oT.attachEvent('on' + oType, fnHandler);  
                } else { //for Others  
                    oT['on' + oType] = fnHandler;  
                }  
            },  
            removeEvent : function (oTarget, oType, fnHandler) { //-----移除事件;  
                var oT = this.$(oTarget);  
                if (!oT) {  
                    alert('Not found \" ' + oTarget + ' \"');  
                    return false  
                };  
                if (oT.removeEventListener) { //for DOM  
                    oT.removeEventListener(oType, fnHandler, false);  
                } else if (oT.detachEvent) { //for IE  
                    oT.detachEvent('on' + oType, fnHandler);  
                } else { //for Others  
                    oT['on' + oType] = null;  
                }  
            },  
            getEvent : function (ev) { //-----獲得事件-----  
                return ev || window.event;  
            },  
            getTarget : function (ev) { //-----獲取目標----  
                return this.getEvent(ev).target || this.getEvent().srcElement;  
            },  
            stopPropagation : function () { //-----阻止冒泡-----  
                if (window.event) {  
                    return this.getEvent().cancelBubble = true;  
                } else {  
                    return arguments.callee.caller.arguments[0].stopPropagation();  
                }  
            },  
            stopDefault : function () { //-----阻止預設行為  
                if (window.event) {  
                    return this.getEvent().returnValue = false;  
                } else {  
                    return arguments.callee.caller.arguments[0].preventDefault();  
                }  
            },  
            /*-------------------- 常用函式 --------------------*/  
            toggleDisplay : function (id) { //-----顯示，隱藏-----  
                var oTarget = this.$(id);  
                if (!oTarget) {  
                    return false;  
                }  
                oTarget.style.display == 'none' ? oTarget.style.display = 'block' : oTarget.style.display = 'none';  
            },  
            stripHTML : function (agr) { //-----移除HTML-----  
                var reTag = /<(?:.|\s)*?>/g;  
                return agr.replace(reTag, '')  
            },  
            stripSpace : function (oTarget) { //-----移除空格-----  
                var re = /^\s*(.*?)\s*$/;  
                return oTarget.replace(re, '$1');  
            },  
            isEmail : function (e) { //-----Is E-mail  
                var re = /^[a-zA-z_][a-zA-Z_0-9]*[email protected]\w{1,}.\[a-zA-Z]{1,}/;  
                return re.test(e);  
            },  
            /*-------------------- Cookie操作 --------------------*/  
            setCookie : function (sName, sValue, oExpires, sPath, sDomain, bSecure) { //-----設定Cookie-----  
                var sCookie = sName + '=' + encodeURIComponent(sValue);  
                if (oExpires) {  
                    var date = new Date();  
                    date.setTime(date.getTime() + oExpires * 60 * 60 * 1000);  
                    sCookie += '; expires=' + date.toUTCString();  
                }  
                if (sPath) {  
                    sCookie += '; path=' + sPath;  
                }  
                if (sDomain) {  
                    sCookie += '; domain=' + sDomain;  
                }  
                if (bSecure) {  
                    sCookie += '; secure';  
                }  
                document.cookie = sCookie;  
            },  
            getCookie : function (sName) { //-----獲得Cookie值-----  
                var sRE = '(?:; )?' + sName + '=([^;]*)';  
                var oRE = new RegExp(sRE);  
                if (oRE.test(document.cookie)) {  
                    return decodeURIComponent(RegExp['$1']);  
                } else {  
                    return null;  
                }  
            },  
            deleteCookie : function (sName, sPath, sDomain) { //-----刪除Cookie值-----  
                this.setCookie(sName, '', new Date(0), sPath, sDomain);  
            },  
            clearCookie : function () { //清除所有Cookie  
                var cookies = document.cookie.split(";");  
                var len = cookies.length;  
                for (var i = 0; i < len; i++) {  
                    var cookie = cookies[i];  
                    var eqPos = cookie.indexOf("=");  
                    var name = eqPos > -1 ? cookie.substr(0, eqPos) : cookie;  
                    name = name.replace(/^\s*|\s*$/, "");  
                    document.cookie = name + "=;expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/"  
                }  
            },  
            convert : function (sValue, sDataType) { //型別轉，根據不同型別資料排序，比如，整型，日期，浮點，字串，接受兩個引數，一個是值，一個是排序的資料型別  
                switch (sDataType) {  
                case "int":  
                    return parseInt(sValue);  
                case "float":  
                    return parseFloat(sValue);  
                case "date":  
                    return new Date(Date.parse(sValue));  
                default:  
                    return sValue.toString();  
                }  
            },  
            geterateCompareTRs : function (iCol, sDataType) { //比較函式，用於sort排序用  
                return function compareTRs(oTR1, oTR2) {  
                    var vValue1,  
                    vValue2;  
                    if (oTR1.cells[iCol].getAttribute("value")) { //用於高階排序，比如圖片，新增一個額外的屬性來排序  
                        vValue1 = KW.convert(oTR1.cells[iCol].getAttribute("value"), sDataType);  
                        vValue2 = KW.convert(oTR2.cells[iCol].getAttribute("value"), sDataType);  
                    } else {  
                        vValue1 = KW.convert(oTR1.cells[iCol].firstChild.nodeValue, sDataType);  
                        vValue2 = KW.convert(oTR2.cells[iCol].firstChild.nodeValue, sDataType);  
                    }  
                    if (vValue1 < vValue2) {  
                        return -1;  
                    } else if (vValue1 > vValue2) {  
                        return 1;  
                    } else {  
                        return 0;  
                    }  
                }  
            },  
            tabSort : function (sTableID, iCol, sDataType) { //排序函式，sTableID為目標,iCol哪列排序，為必需，sDataType可選  
                var oTable = document.getElementById(sTableID);  
                var oTBody = oTable.tBodies[0];  
                var colDataRows = oTBody.rows;  
                var aTRs = [];  
                var len = colDataRows.length;  
                for (var i = 0; i < len; i++) {  
                    aTRs[i] = colDataRows[i];  
                };  
                if (oTable.sortCol == iCol) { //如果已經排序，則倒序  
                    aTRs.reverse();  
                } else {  
                    aTRs.sort(this.geterateCompareTRs(iCol, sDataType));  
                }  
                var oFragment = document.createDocumentFragment();  
                var trlen = aTRs.length;  
                for (var j = 0; j < trlen; j++) {  
                    oFragment.appendChild(aTRs[j]);  
                };  
                oTBody.appendChild(oFragment);  
                oTable.sortCol = iCol; //設定一個狀態  
            },  
            GetQueryString : function (name) {  
                var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");  
                var r = window.location.search.substr(1).match(reg);  
                if (r != null)  
                    return unescape(r[2]);  
                return null;  
            },  
            HTMLEscape : function (str) {  
                var s = "";  
                if (str.length == 0) {  
                    return "";  
                }  
                s = str.replace(/&/g, "&amp;");  
                s = s.replace(/</g, "&lt;");  
                s = s.replace(/>/g, "&gt;");  
                s = s.replace(/ /g, "&nbsp;");  
                s = s.replace(/\'/g, "&#39;");  
                s = s.replace(/\"/g, "&quot;");  
                return s;  
            },  
            loadJS : function (url) {  
                var statu = true; //初始狀態  
                var js = document.getElementsByTagName("script");  
                var len = js.length;  
                for (var i = 0; i < len; i++) {  
                    if (js[i].getAttribute("src") == url) {  
                        statu = false; //如果已經新增，則設定為Flase，不再新增  
                    }  
                }  
                if (statu) {  
                    var script = document.createElement("script");  
                    script.type = "text/javascript";  
                    script.src = url;  
                    var header = document.getElementsByTagName("head")[0];  
                    header.appendChild(script);  

                }  
            },  
            ajax : function (obj) {  
                if (!obj.url) {  
                    return false;  
                };  
                var method = obj.type || "GET";  
                var async = obj.async || true;  
                var dataType = obj.dataType;  
                var XHR = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");  
                XHR.open(method, obj.url, async);  
                XHR.setRequestHeader('If-Modified-Since', 'Thu, 06 Apr 2006 00:00: 00 GMT');  
                XHR.send(null);  
                if (obj.sendBefore) {  
                    obj.sendBefore();  
                };  
                XHR.onreadystatechange = function () {  
                    if (XHR.readyState == 4 && (XHR.status >= 200 && XHR.status < 300 || XHR.status == 304)) {  

                        if (obj.success) {  
                            if (dataType && dataType.toLocaleLowerCase() === "json") {  
                                obj.success(eval("(" + XHR.responseText + ")"))  
                            } else if (dataType && dataType.toLocaleLowerCase() === "xml") {  
                                obj.success(XHR.responseXML)  
                            } else {  
                                obj.success(XHR.responseText);  
                            }  
                        };  
                        if (obj.complete) {  
                            obj.complete()  
                        }  

                    } else {  
                        if (obj.complete) {  
                            obj.complete()  
                        }  
                        if (obj.error) {  
                            obj.error("The XMLHttpRequest failed. status: " + XHR.status);  
                        }  

                    }  

                }  
            }  

        };  

    })();