function Suggest(textInput, config) {
if (!(this instanceof Suggest)) {
return new Suggest(textInput, config);
}
var now = function() {
return (new Date).getTime();
};
var EMPTY = "",
SPACE = " ",
HIDDEN = "hidden",
NULL = null,
UNDEFINED,
WIN = window,
DOC = document,
BODY = document.body,
ARRAY_VALUE = "[object Array]",
EMPTY_FUNCTION = function() { },
PREFIX_CLS = EMPTY, //全局前缀，方便自定义
CLS_CONTAINER = PREFIX_CLS + "sug-list-container",
CLS_CONTENT = PREFIX_CLS + "sug-list-content",
CLS_ITEM_SELECTED = PREFIX_CLS + "sug-item-selected",
CLS_ITEM_KEY = PREFIX_CLS + "sug-item-key",
CLS_ITEM_RESULT = PREFIX_CLS + "sug-item-result",
DEFAULT_VALUE = "", //input 默认值
isIE = /\w/.test('\u0130'),
isIE6 = isIE && !window.XMLHttpRequest,
isIE9 = document.documentMode && document.documentMode === 9,
toString = Object.prototype.toString;
var timeout = false, //script 请求是否过时
timeoutID = null,
lockIE = NaN,
reqScript = '', //jsonp请求标签
latestReqScriptTime = '',
scriptDataIsOut = false, //非ie6-8判断是否数据过期
isLocalDataSource = false, //根据config判断是否是本地数据源
selectedIndex = -1, //选中项索引
selectedItem = null, //当前选中项
taobaoURL = "http://suggest.taobao.com/sug?callback=callback&q=",
youaURL = "http://youa.baidu.com/suggest/se/s?cmd=suggest&type=kwd&max_count=10&callback=callback&keyword=",
baiduURL = "http://suggestion.baidu.com/su?p=3&cb=window.bdsug.sug",
//在键盘操作up,down时，忽略鼠标的mousemove,mousedown操作
mouseMoveFlag = true,
//config全部小写
defaultConfig = {
queryname: 'wd',
charset: 'gbk',
callbackname: 'callback',
callbackfn: 'bdsug.sug',
resultkey: 's',
containerwidth: 0,
offsettop: -1,
usecache: true,
//string || json object
datasource: "http://suggestion.baidu.com/su?p=3&cb=window.bdsug.sug",
autofocus: false,
inputdelay: inputDelay,
updowndelay: updownDelay,
/*是否使用外部css文件,动态添加
*使用外部定制样式
* 外部定制css<style>文件
* 定制的className
* 可在_init以后调用this._setCss来修改样式
*/
usestylefile: false,
styleid: PREFIX_CLS + "style",
prefixclass: PREFIX_CLS, //定制前缀
//事件
//替换
buildhtml: NULL,
formatdata: NULL,
//插入
onbeforeconstructor: NULL,
onbeforeinit: NULL,
oninit: NULL,
onbeforerequest: NULL,
onrequestload: NULL,
oncomplete: NULL,
onbeforeselect: NULL,
onbeforeshow: NULL,
onhide: NULL
},
CFG_RESULT_KEY = "resultkey",
CFG_INPUT_DELAY = "inputdelay",
inputDelay = 3000,
CFG_UP_DOWN_DELAY = "updowndelay",
updownDelay = 160,
CFG_STYLE_ID = "styleid",
callee = arguments.callee,
ctrlLockFlag = false; //ie下使用ctrl+y/z时，不在propertychange中请求数据
//Static
callee._focusInstance = UNDEFINED;
//Constructor
function Sug(textInput, config) {
if (!(this instanceof Sug)) {
return new Sug();
}
this._regisEvent("onbeforeconstructor", config);
this._initThis.call(this);
this._preInit.call(this);
this._initConfig.call(this, config);
this.textInput = typeof textInput == 'string' ? DOC.getElementById(textInput) : textInput;
this._regisEvent("onbeforeinit");
this._initialize.call(this);
this._regisEvent("oninit");
}
Sug.prototype = {
constructor: Sug,
guid: now(), //prototype对象共用实例
//注册外部事件
_regisEvent: function(evType, config) {
config = config || this.config;
if (config&&config[evType]) {
config[evType].call(this);
}
},
_initThis: function() {
//数据
this._PreHandleData = NULL;
this._HandledData = NULL;
//this._HtmlContent = NULL;
//劲量确保当前查询处理数据的查询关键字实时准确，最好由服务端返回，好确保缓存key:value准确，避免延时产生交叉
this._CurrentQueryWord = EMPTY;
this._QueryData = [];
this._QueryData._QueryIndex = -1;
this._CacheData = {};
/* 数据来源类型;默认0
* 不使用&运算
* a,使用cache;b,使用url;c,使用传入data;
* 0:[cache+url],1:[cache+data],2:[url],3:[data]
*/
this._DataType = 0;
//操作sug结果List
//List是否有数据
this._HasData = false;
},
//初始化前的任务
_preInit: function() {
//缓存外部config可能修改的
this.__buildHTML__ = this.buildHTML;
this.__formatData__ = this._formatData;
},
//初始化config
_initConfig: function(_config) {
this.config = mix(deepCopy({}, defaultConfig), _config);
//datasource
var that = this,
config = that.config,
_dataSource = config.datasource,
_useCache = config.usecache;
//初始化稀释执行相关函数
this._updownDiute = NULL; //updown
this._updownDiute = this.__updownDiute__(config[CFG_UP_DOWN_DELAY] || updownDelay); //该闭包是否泄漏?验证>0?
this._reqDiute = NULL; //request data
this._reqDiute = this.__reqDiute__(config[CFG_INPUT_DELAY] || inputDelay);
//className
this._initClassName(config["prefixclass"]);
//如果不使用外部css文件或标签则初始化样式
if (!config["usestylefile"]) {
this._initStyle();
}
//数据源
if (typeof _dataSource === 'string') {
that._DataType = _useCache ? 0 : 2;
isLocalDataSource = false;
_dataSource += (_dataSource.indexOf('?') === -1) ? '?' : '&';
config.dataSource = _dataSource + config.callbackname + '=' + config.callbackfn;
//初始化回调函数
this._initCallback(config.callbackfn);
} else {
that._PreHandleData = _dataSource;
that._DataType = _useCache ? 1 : 3; //本地传入数据源
isLocalDataSource = true;
}
//bulidHTML
if (!config.buildhtml) {
that.buildHTML = that.__buildHTML__;
} else {
that.buildHTML = function(data) {
var html = config.buildhtml(data);
//保存键值cache
if (that.config.usecache)
that._CacheData[that._CurrentQueryWord] = html;
return html;
};
}
//formatData 空函数相等判断?
if (!config.formatdata) {
that._formatData = that.__formatData__;
} else {
that._formatData = config.formatdata;
}
},
_initClassName: function(prefix_cls) {
var styleId = this.config[CFG_STYLE_ID];
if (styleId == PREFIX_CLS + "style") {//判断是否用户自定义id
styleId = prefix_cls + "style";
}
PREFIX_CLS = prefix_cls;
CLS_CONTAINER = PREFIX_CLS + "sug-list-container";
CLS_CONTENT = PREFIX_CLS + "sug-list-content";
CLS_ITEM_SELECTED = PREFIX_CLS + "sug-item-selected";
CLS_ITEM_KEY = PREFIX_CLS + "sug-item-key";
CLS_ITEM_RESULT = PREFIX_CLS + "sug-item-result";
},
_initStyle: function() {
var styleId = this.config[CFG_STYLE_ID];
if (DOC.getElementById(styleId) && !PREFIX_CLS) return; //已存在并样式前缀相同时不重复初始化该样式
var s = {};
s["." + CLS_CONTAINER] = "border: 1px solid #ccc;background: #fff;z-index: 9999;overflow: hidden;";
s["." + CLS_CONTENT] = "overflow: hidden;";
s["." + CLS_CONTENT + SPACE + "ul"] = "margin:0;padding:0;";
s["." + CLS_CONTENT + SPACE + "li"] = "cursor: default;color: #333;font-size: 14px;line-height: 20px;clear: both;float: left;width: 100%;overflow: hidden;text-decoration: none;padding: 2px 0 3px 2px;margin: 0;";
s["." + CLS_CONTAINER + SPACE + "li" + SPACE + "span." + CLS_ITEM_KEY] = "float:left;";
s["." + CLS_CONTAINER + SPACE + "li" + SPACE + "span." + CLS_ITEM_RESULT] = "float:right";
s["." + CLS_CONTAINER + SPACE + "." + CLS_ITEM_SELECTED] = "background:#ddd;";
this._setCss(s, styleId);
},
_setCss: setCss,
_initialize: function() {
this._initTextInput();
this._initContainer();
if (isIE6)
this._initShim();
//初始化
this._initSugList();
this._initEvent();
},
_initTextInput: function() {
var textInput = this.textInput;
textInput.setAttribute("autocomplete", "off");
if (this.config["autofocus"]) {
textInput.focus();
}
},
_initContainer: function() {
var that = this,
container = document.createElement('div'),
content = document.createElement('div');
container.style.cssText = "position:absolute; visiblility:hidden;";
addClass(container, CLS_CONTAINER);
addClass(content, CLS_CONTENT);
container.appendChild(content);
BODY.insertBefore(container, BODY.firstChild);
that.container = container;
that.content = content;
},
_setContainerRegion: function() {
var that = this;
var inputCoords = getCoords(that.textInput);
that.container.style.left = inputCoords.left + "px";
that.container.style.top = inputCoords.top + that.textInput.offsetHeight + that.config["offsettop"] + "px";
var configWidth = that.config["containerwidth"];
that.container.style.width = (configWidth || (that.textInput.offsetWidth - 2)) + "px";
},
_initShim: function() {
var iframe = document.createElement('iframe');
iframe.src = "about:blank";
iframe.style.cssText = "position:absolute;visibility:hidden;border:none;";
this.container.shim = iframe;
BODY.insertBefore(iframe, BODY.firstChild);
},
_setShimRegion: function() {
var that = this, container = that.container,
shim = container.shim, style = container.style;
if (shim) {
shim.style.left = style.left;
shim.style.top = style.top;
shim.style.width = container.offsetWidth + "px"; //auto width时需要精确获取
shim.style.height = container.offsetHeight + "px";
}
},
_initEvent: function() {
var that = this;
addEvent(window, 'resize', function() {
that._setContainerRegion();
that._setShimRegion();
});
//input keyup
//文本框内容改变触发
addEvent(that.textInput, 'input', function(e) {
//使用当前this作为环境
that._inputValue(e);
});
addEvent(that.textInput, 'propertychange', function(e) { that._inputValue(e); }); //ie
//hide
that.textInput.onblur = function() {
that._hide();
callee._focusInstance = UNDEFINED;
}
//up down
//上下按，选择内容触发
//addEvent(document, 'keypress', _keyUpDown);//chrome,safari,ie 问题
//keyup时chrome阻止光标移动到最前无效
//ie向下选择后，输入框中值改变触发事件,//opera 一开始不行，后来向下选择按钮有效。。。
addEvent(that.textInput, 'keydown', function(e) { that._keyUpDown(e); });
addEvent(that.textInput, 'keyup', function() {
mouseMoveFlag = true;
});
addEvent(that.textInput, 'focus', function(e) {
//sugList._show.call(sugList);
});
addEvent(that.textInput, 'click', function(e) {
//click处hold会在ie中需要2次点击空处才能blur
//holdFocus(e, that.textInput);
//sugList._show.call(sugList);
});
//点击选中下面选项
addEvent(that.content, 'mousedown', function(ev) {
if (!mouseMoveFlag) {
holdFocus(ev, that.textInput);
return;
}
// 非左键和中键点击
if (eWhich(ev).which > 2) {
//ie下右键后input仍然有焦点为activeElement但是光标不显示
holdFocus(ev, that.textInput);
return;
}
ev = ev || window.event;
var elem = ev.target || ev.srcElement;
elem = matchElem(elem, that.content, function() {
return this.tagName.toLowerCase() == 'li';
});
that.setSelectedIndexByValue(elem);
that.selectItem.call(that, elem);
holdFocus.call(that, ev, that.textInput);
});
//"hover":
//list item高亮 mouseover
addEvent(that.content, 'mousemove', function(e) {
if (!mouseMoveFlag) return;
e = e || window.event;
var elem = e.target || e.srcElement,
li = matchElem(elem, that.content, function() { return this.tagName.toLowerCase() == 'li'; });
if (!li) return;
//同一个li会触发2-3次,在remove时判断，是否需要remove
that.selectItemByMouse(li);
})
},
_inputValue: function(e) {
e = e || window.event;
var _keyCode = e.which || e.keyCode,
that = this,
val = that.textInput.value;
callee._focusInstance = that; //?
//that._CurrentQueryWord = val;
//propertychange,输入框val可能会被赋初值,当val与lockie相同，如果无数据需要继续请求；使用ctrl+z/y时锁住不往下请求数据
if (val === lockIE && (that._HasData || ctrlLockFlag)) return;
/*若需要不断更新list，选中listItem后根据value继续更新list则在此更新lockIE,不在select时同时更新
* 修复右键后左击显示2次list,确保lockIE为最新,更新list后也要保证lockIE值也是最新
*/
//初始化时不检索，此时：lockIE无数据,val为空或为默认值(当lockIE有数据时，需要隐藏下面list，需要进入_reqDiute延时处理，防止交叉)
if (!lockIE && (!val || val == DEFAULT_VALUE)) return;
val && that._QueryData.push(val);
lockIE = val;
//请求数据
that._reqDiute(val);
},
_keyUpDown: function(e) {
e = e || window.event;
var _keyCode = e.which || e.keyCode,
that = this,
targetEl = e.target || e.srcElement;
if (targetEl == that.textInput) {
//Enter,在ie_tester中ie6-7检测不到enter键,原生ie6-7可以检测到
if (_keyCode == 13 || _keyCode == 108) {
return that.selectItem(that.getSelectedItemByIndex());
}
//可以用event.altKey，event.ctrlKey，event.metaKey(上有微软的旗帜)，event.shiftKey来判断对应的键是否被按下
if (e.ctrlKey) {
var qData = that._QueryData,
qDataIndex = qData._QueryIndex,
maxIndex = qData.length - 1,
minIndex = -1;
//qData._QueryIndex
qData._QueryIndex = qDataIndex = qDataIndex == -1 ? maxIndex : qDataIndex;
if (_keyCode == 89) {
//前进
if (qDataIndex < maxIndex) {//最大值问题。。。这里修改值时，会再次记录querydata...
//?是否保证的了ctrlLockFlag瞬时为true,ff下不会触发oninput事件
ctrlLockFlag = true;
targetEl.value = lockIE = ++qDataIndex <= maxIndex ? qData[++qData._QueryIndex] : qData[qData._QueryIndex];
setTimeout(function() {//改变值瞬时不为false;
ctrlLockFlag = false;
}, 0);
//保证_CurrentQueryWord即时性，不在延时后修正?
//that._CurrentQueryWord = lockIE;
that._reqDiute(lockIE);
}
stopEvent(e); //阻止默认ctrl+y
return;
} else if (_keyCode == 90) {
//后退
if (qDataIndex > minIndex) {
ctrlLockFlag = true;
targetEl.value = lockIE = --qDataIndex > -1 ? qData[--qData._QueryIndex] : EMPTY;
setTimeout(function() {
ctrlLockFlag = false;
}, 0);
//从无数据到有数据hasData
//that._CurrentQueryWord = lockIE;
that._reqDiute(lockIE);
}
stopEvent(e);
return;
}
}
if (_keyCode == 27) {
that._hide();
}
var upOrDown = 0;
if (_keyCode === 38 || _keyCode === 104) {
upOrDown--;
} else if (_keyCode === 40 || _keyCode == 98) {
upOrDown++;
}
//执行向上向下选择
if (upOrDown) {
mouseMoveFlag = false;
//失去焦点后回来按up,down继续显示sugList._show()并判断是否有数据_HasData
//如果是从未显示状态到显示，则第一次按键不修改selectedIndex
if (!that.getDisplayState()) {
that._show.call(that); //如果显示不了，则是没数据，其他地方保证数据一致性
} else {
that._selectItemByIndexIncrease(upOrDown);
}
//阻止光标在chrome下，按up时跳到最前
e.preventDefault && e.preventDefault();
//ie下阻止输入框不显示光标，但任然有焦点为激活对象时，按up,down时，body的scroll也跟着滚动
e.returnValue = false;
return false;
}
}
},
/* selectedIndex,selectedItem,selectedValue
*keyboard:高亮显示某项(1),
* updown:取消前面选中项(2),选中新项(3),给input赋当前项值(4)
* enter:隐藏list,使用该选中项(5), 执行跳转等操作(6)
*mouse:
* mousemove:取消前面选中项(2),选中新项(3)
* mousedown:选中鼠标停留项(3),给input赋当前项值(4),隐藏List,使用该选中项(5), 执行跳转等操作(6)
*/
//select item 最终 选中某项
//mouse,key选中后直接跳转操作，还是再按submit/enter进行进一步操作?
selectItem: function(elem) {
this._regisEvent("onbeforeselect");
if (elem != selectedItem) {
this.removeSelectedItem();
this.setSelectedItem(elem);
}
this.updateInputBySelectedItem(elem);
this._hide();
},
//up down延时
__updownDiute__: function(updownDelay) {
var that = this;
return diuteEvent(function(upDownNum) {
selectedIndex += upDownNum;
var elem = that.getSelectedItemByIndex();
that.removeSelectedItem();
that.setSelectedItem(elem);
that.updateInputBySelectedItem(elem);
}, updownDelay);
},
_updownDiute: NULL,
//up down 键盘，根据index的增量大小，来显示选中项，使用延迟时间
//稀释up down按键，避免过快操作
_selectItemByIndexIncrease: function(upDownNum) {
this._updownDiute.call(this, upDownNum);
},
_reqDiute: NULL,
//请求数据,100毫秒间隔
__reqDiute__: function(inputDelay) {
var that = this;
return diuteEvent(function(val) {
this._regisEvent("onbeforerequest");
//val为空或者默认定义的初始值时，不请求数据，不更新lockIE,延时处理可能出现请求未完成，已经初始化，后显示未完成的请求
if (!val) {
that._initSugList();
return;
}
that._updataContent(val, that._DataType);
}, inputDelay);
},
//mouse hover,会触发多次,因为多个子节点到li?
selectItemByMouse: function(elem) {
if (elem != selectedItem) {
this.removeSelectedItem();
this.setSelectedItem(elem);
//set selectedIndex
this.setSelectedIndexByValue(elem);
}
},
//set selectedIndex
setSelectedIndexByValue: function(item) {
return (selectedIndex = indexOfArray(item, this._get()));
},
//根据selectIndex获取selectItem
getSelectedItemByIndex: function() {
var list = this._get(), count = list.length || 0;
//调整selectedIndex位于0和count-1之间
(selectedIndex >= count) && (selectedIndex = 0);
(selectedIndex < 0) && (selectedIndex = count - 1);
return list[selectedIndex];
},
//2移除之前选中项
removeSelectedItem: function() {
if (selectedItem) {
do {
removeClass(selectedItem, CLS_ITEM_SELECTED);
} while (hasClass(selectedItem, CLS_ITEM_SELECTED));
selectedItem = null;
}
},
//3设置选中项
setSelectedItem: function(item) {
if (item) {
addClass(item, CLS_ITEM_SELECTED);
selectedItem = item;
}
},
/*4更新input中文字内容
* elem:selectedItem
*/
updateInputBySelectedItem: function(elem) {
//#2更新lockie值，=运算从右往左执行
if (elem) {
var input = this.getSelectedItemValue(elem);
input && (this.textInput.value = lockIE = input);
//记录Ctrl+z/y
this._QueryData.push(input);
}
},
//获取对应item选中项的值,默认为当前选中项的值
getSelectedItemValue: function(elem) {
elem = elem || selectedItem;
elem = matchElem(elem, this.content, function() {
return this.tagName.toLowerCase() == 'li';
});
if (elem) {
//鼠标点击或enter选中某项后，不需要更新sug数据
elem = matchChild(elem, function() {
return this.tagName.toLowerCase() == 'span' && hasClass(this, CLS_ITEM_KEY); //(this.className.indexOf('sug-key') != -1);
}, 0);
if (elem) {
return elem.innerText || elem.textContent || elem.innerHTML || ''; //elem.innerHTML; //?是否将''空值换成当前input中的值
}
}
},
//jsonp request
_requestData: function(q) {
var that = this, config = this.config;
//ie6-8的script直接替换src请求新数据，其他浏览器不重建script则不请求新数据
if (!reqScript || !isIE || isIE9) {
var _script = document.createElement('script'),
_head = document.getElementsByTagName('head')[0];
_script.type = "text/javascript";
//async不能解决异步执行的问题，只能是异步加载
//如果 async 属性为 true，则脚本会相对于文档的其余部分异步执行，这样脚本会可以在页面继续解析的过程中来执行。
_script.async = true;
if (reqScript) {
_head.replaceChild(_script, reqScript);
} else {
_head.appendChild(_script);
//ie6-8 load
//ie不支持onerror, opera与ie支持readyState
if (isIE) {
_script.onreadystatechange = function(e) {
e = e || window.event;
//opera的script也存在readyState,但如果请求地址不存在,是不会进入onload回调的
//http://www.cnblogs.com/_franky/archive/2010/06/20/1761370.html#1875070
if (isIE && /loaded|complete/i.test(_script.readyState)) {
//ie会执行2次
that._regisEvent("onrequestload");
}
};
}
}
reqScript = _script;
//仅仅对非ie6-8有效判断获取过来的数据是否过期？,ie会自动abort之前的请求,不在触发onload
var t = now();
_script.setAttribute('data-time', t);
latestReqScriptTime = t;
//_script这个唯一的，用来替换的script
//error url:op返回1个load;ff、chrome返回请求数量的error;safari返回1个error
_script.onload = function() {
that._regisEvent("onrequestload");
//判断返回的数据是否已经过期,true则过期
scriptDataIsOut = (_script.getAttribute('data-time') != latestReqScriptTime);
};
_script.onerror = function() {
};
/*加载script
* http://www.cnblogs.com/rubylouvre/archive/2011/02/13/1953087.html
* http://www.cnblogs.com/rubylouvre/archive/2011/03/01/1968397.html
*/
}
/*过期：
* 1,发送请求a前,产生最新请求b,取消a使用b；
* 2,请求a返回数据,此时请求b,c..等已经发出,不使用a,等待最后一个请求返回数据；
*/
reqScript.charset = config.charset; //"utf-8"; baidu使用gbk编码
/*var t = new Date();
reqScript.setAttribute('data-time', t);
latestReqScriptTime = t;
*/
//第1种过期?
//script src设置，ie6-8已最后设置值为准，可赋值更换，chrome以先设置的值为准，不再更换...
//最好先给script 设置 src属性 然后 再 appedChild 他 到 DOM树中，这样ie6中loaded与complete出现顺序不会乱
reqScript.src = config.datasource + "&" + config.queryname + "=" + encodeURIComponent(q) + "&t=" + now();
},
_initCallback: function(_callbackFn) {
if (!_callbackFn) return;
if (typeof _callbackFn === 'string') {
var context = setNamespace(_callbackFn),
lastName = _callbackFn.split('.').pop();
context[lastName] = this._jsonpCallback;
} else {
_callbackFn = this._jsonpCallback;
}
},
_jsonpCallback: function(data) {
var that = callee._focusInstance;
if (scriptDataIsOut || !data || !that) return;
/*
* 超时判断不靠谱，如果第一个请求未超时阶段发送第2个请求，并返回数据。。。
* 目前返回数据不会出现2个数据先后颠倒，并只返回一个有用数据
*/
that._PreHandleData = data;
that._handlePreData(data);
},
//原始数据处理入口
_handlePreData: function(preHandleData) {
this._HandledData = this._formatData(preHandleData);
var outHTML = this.buildHTML(this._HandledData);
//如果没数据，则在_set初始化中会隐藏suglist
this._set(outHTML) && this._show();
},
/*数据处理
1,config数据源 || _requestData
2,config呈现方法 || buildHTML
*/
_formatData: function(data) {
var key = this.config[CFG_RESULT_KEY];
data = key ? data[key] : data;
if (!isLocalDataSource) {
//return data["result"];//taobao
return data; //baidu
}
//local datasource
var len = data.length, ret = [];
for (len; len--; ) {
if (data[len].indexOf(this._CurrentQueryWord) != -1) {//?过滤规则
ret.push(data[len]);
}
}
return ret;
},
/*获取、请求数据入口
0,cache+url
1,cache+config.datasource
2,url
3,config.datasource
*/
_updataContent: function(val, this_DataType) {
//确保是当前正在执行的_CurrentQueryWord作为进一步确认修正?
this._CurrentQueryWord = val;
switch (this_DataType) {//this._DataType
case 0:
var cacheValue = this._CacheData[val];
if (cacheValue) {
this._set(cacheValue) && this._show();
} else {
this._requestData(val);
}
break;
case 1:
var cacheValue = this._CacheData[val];
if (cacheValue) {
this._set(cacheValue) && this._show();
} else {
this._handlePreData(this._PreHandleData);
}
break;
case 2:
this._requestData(val);
break;
case 3:
this._handlePreData(this._PreHandleData);
break;
default: break;
}
},
buildHTML: function(arr) {
var html = '';
if (isArray(arr)) {
var len = arr.length;
//html += "<ul>";
for (var i = 0; i < len && i < 10; i++) {
//html += '<li><a href="javascript:void(0)" >' + arr[i][0] + '<span style="float:right;">'+arr[i][1]+'</span></a></li>';
html += '<li>';
html += '<span class="' + CLS_ITEM_KEY + '">' + arr[i] + '</span>'; //arr[i][0]
//html += '<span class="'+CLS_ITEM_RESULT+'">' + arr[i][1] + '</span>';
html += '</li>';
}
//html += '</ul>';
}
//保存键值cache
if (this.config.usecache)
this._CacheData[this._CurrentQueryWord] = html;
return html;
},
_initSugList: function() {
//获取到新的sugList时初始化参数
selectedIndex = -1;
selectedItem = null;
this._HasData = false;
this.content.innerHTML = '';
this._hide();
},
"_get": function() {
return this.content.getElementsByTagName('li');
},
"_set": function(outHTML) {//_set()清空
this._initSugList.call(this);
//确保不展示延时的数据，与输入框不匹配
if (outHTML && this.textInput.value == this._CurrentQueryWord) {
//设置sugListWrap内容
this.content.innerHTML = "<ul>" + outHTML + "</ul>";
return this._HasData = true;
} else {
return false; //this._HasData = false; //that.content.innerHTML = ''; //_initSugList中以作清空
}
},
"getDisplayState": function() {//注意是方法..getDisplayState()
return this.container.style.visibility.toLowerCase() != HIDDEN;
},
_show: function() {
this._regisEvent("onbeforeshow");
//确认无数据情况下清空sugList
if (this._HasData) {
if (DOC.activeElement != this.textInput) return;
var container = this.container, shim = this.container.shim;
//显示前重新计算位置
this._setContainerRegion();
visible(container);
if (shim) {
this._setShimRegion();
visible(shim);
}
return true;
}
return false; //sugList._initSugList();
},
_hide: function() {
var shim = this.container.shim;
if (shim)
invisible(shim);
invisible(this.container);
this._regisEvent("onhide");
}
};
//设置短时间连续执行时，光标会停止跳动
//setInterval(function() { }, 30);
//stop ie go back
document.onkeydown = function(e) {
e = e || window.event;
var _keyCode = e.which || e.keyCode,
targetEl = e.target || e.srcElement;
if ((targetEl == document.body || targetEl == document.documentElement) && _keyCode == 8) {
return false;
}
};
//根据string: 如a.b.c获得当前全局执行环境相应命名空间对象
//只返回到倒数第2个对象
function setNamespace(_namespace, context) {
context = context || WIN;
if (!_namespace) return context;
//去掉window开头的部分
_namespace = _namespace.replace(/^window\.?/, '');
var arr = _namespace.split('.'),
len = arr.length,
i = 0, p;
for (; i < len - 1; i++) {
p = arr[i];
if (p in context) {
context = context[p];
} else {
context = context[p] = {}; //需要更新context[p]->context
}
}
return context;
}
function visible(elem) {
elem.style.visibility = EMPTY;
}
function invisible(elem) {
elem.style.visibility = HIDDEN;
}
//对象拷贝
function deepCopy(result, source) {
for (var key in source) {
var copy = source[key];
if (result === copy) continue;
if (isPlainObject(copy)) {
result[key] = arguments.callee(result[key] || {}, copy);
} else if (isArray(copy)) {
result[key] = arguments.callee(result[key] || [], copy);
} else {
result[key] = copy;
}
}
return result;
}
function isPlainObject(obj) {
if (!obj || toString.call(obj) !== "[object Object]" || obj.nodeType || obj.setInterval) {
return false;
}
if (obj.constructor && !hasOwnProperty.call(obj, "constructor")
&& !hasOwnProperty.call(obj.constructor.prototype, "isPrototypeOf")) {
return false;
}
var key;
for (key in obj) { }
return key === undefined || hasOwnProperty.call(obj, key);
}
function isArray(arr) {
return toString.call(arr) == ARRAY_VALUE;
}
//indexOf
function indexOfArray(item, arr) {
for (var i = 0, len = arr.length; i < len; ++i) {
if (arr[i] === item) {
return i;
}
}
return -1;
}
//稀释事件，interval 执行密度
function diuteEvent(fn, interval, args) {
if (typeof fn !== 'function' || typeof interval !== 'number' || interval < 0) {
return fn;
}
var timeStamp = 0, timer = null;
return function() {
clearTimeout(timer);
var _args = [].slice.call(arguments, 0).concat(args),
self = this,
now = +new Date;
if (now - timeStamp >= interval) {
timeStamp = now;
return fn.apply(self, _args); //self
} else {
//消除误差
var delay = interval + timeStamp - now;
timer = setTimeout(function() {
fn.apply(self, _args);
timeStamp = +new Date;
}, delay > 15 ? delay : 15);
}
};
}
//elem是否在wrap子孙节点内
function isElemInWrap(elem, wrap) {
wrap = wrap || document.documentElement || document.body;
while (elem) {
if (elem == wrap) return true;
elem = elem.parentNode;
}
}
//匹配子元素elem的父元素中符合fn在wrap内的元素，返回第一个符合条件的elem
function matchElem(elem, wrap, fn) {
wrap = wrap || document.documentElement || document.body;
while (elem !== wrap) {
if (fn.call(elem, elem)) return elem;
//不再往上检索document.docElement,没有tagName等属性(ie6没问题，有documentElement去掉<doc声明) ? body
if (elem == document.documentElement) return;
elem = elem.parentNode;
}
return; //return null?
}
//获取elem子元素符合fn条件的第eq(0-N)个childNode
function matchChild(elem, fn, eq) {
eq = eq || 0;
var cNodes = elem.childNodes;
len = cNodes.length,
num = 0;
for (var i = 0; i < len; i++) {
if (fn.call(cNodes[i], cNodes[i])) {
//符合条件的第num个
if (num == eq) {
return cNodes[i];
} else {
eq++;
}
}
}
return null;
}
//使输入框elem不失去焦点
function holdFocus(ev, elem) {
ev = ev || window.event;
if (ev.preventDefault) {
//w3c
ev.preventDefault();
} else {
//ie
elem.onbeforedeactivate = function() {
ev.returnValue = false;
elem.onbeforedeactivate = null;
};
}
}
//获取鼠标按键值，左1中2右3
function eWhich(ev) {
ev.which = (ev.button & 1 ? 1 : (ev.button & 2 ? 3 : (ev.button & 4 ? 2 : 0)));
//ev.which = (ev.charCode === undefined) ? ev.keyCode : ev.charCode;
return ev;
}
//bind event
function addEvent(elem, evType, fn, useCapture) {
if (document.addEventListener) {
elem.addEventListener(evType, fn, false);
} else if (document.attachEvent) {
//elem.attachEvent('on' + evType, fn);
//ie下，第一参数传入window.event这样不用一直取e||window.event;
elem.attachEvent('on' + evType, function() { fn.call(elem, window.event); })
} else {
elem['on' + evType] = fn;
}
return elem;
}
//unbind event
function removeEvent(elem, evType, fn, useCapture) {
if (document.removeEventListener) {
elem.removeEventListener(evType, fn, useCapture);
} else if (document.detachEvent) {
elem.detachEvent('on' + evType, fn);
} else {
elem['on' + evType] = null;
}
return elem;
}
//阻止默认事件、冒泡
function stopEvent(e) {
e = e || window.event;
if (e.preventDefault) {
e.preventDefault();
e.stopPropagation();
} else {
e.returnValue = false;
e.cancelBubble = true;
}
}
//阻止冒泡
function stopPropagation(e) {
e = e || window.event;
if (e.stopPropagation) {
e.stopPropagation()
} else {
e.cancelBubble = true;
}
}
//阻止默认事件
function preventDefault(e) {
e = e || window.event;
if (e.preventDefault) {
//chrome下可阻止按up键时，输入框中光标跳到最前
e.preventDefault();
} else {
e.returnValue = false;
}
}
//获取元素在页面上的位置
function getCoords(el) {
var box = el.getBoundingClientRect(),
doc = el.ownerDocument,
body = doc.body,
html = doc.documentElement,
clientTop = html.clientTop || body.clientTop || 0,
clientLeft = html.clientLeft || body.clientLeft || 0,
top = box.top + (self.pageYOffset || html.scrollTop || body.scrollTop) - clientTop,
left = box.left + (self.pageXOffset || html.scrollLeft || body.scrollLeft) - clientLeft;
return { 'top': top, 'left': left };
}
//可添加多个className; "aaa bbb ccc" 消除重复
function addClassNoRepeat(elem, value) {
if (elem.nodeType === 1 && value && typeof value === 'string') {
if (!elem.className) {
elem.className = value;
} else {
//className解释效果时，只与style在html中出现的先后顺序为准，以最后一个出现的同名className解释效果，与className.sort()无关
//消除className重复内容
var classNames = (elem.className + " " + value).match(/\s+/g).sort(); //rspace=/\s+/g
for (var len = classNames.length; --len; ) {
if (classNames[len] == classNames[len - 1])
classNames.splice(len, 1);
}
elem.className = classNames.join(" ");
}
}
}
//多node多className添加(div,'aaa bbb ccc'),不去除重复
function addClass(elems, value) {
if (value && typeof value === 'string') {
var classNames = (value || '').split(/\s+/g);
//elems为ElementNode时手动加进数组。。。?htmlCollection
if (elems && elems.nodeType === 1) {
elems = [elems];
}
for (var i = 0, l = elems.length; i < l; i++) {
var elem = elems[i];
if (elem.nodeType === 1) {
if (!elem.className) {
elem.className = value;
} else {
//className有重复无效果上影响，只判断消重新添加的className
var className = " " + elem.className + " ", setClass = elem.className;
for (var c = 0, cl = classNames.length; c < cl; c++) {
if ((className.indexOf(" " + classNames[c]) + " ") < 0) {
setClass += " " + classNames[c];
}
}
elem.className = rtrim(setClass);
}
}
}
}
return elems;
}
//删除elems上的classNames,不去除重复的className,不传value则清空className
function removeClass(elems, value) {
if ((value && typeof value === 'string') || value === void 0) {//void 0==undefined
var classNames = (value || "").split(/\s+/g);
if (elems && elems.nodeType === 1) {
elems = [elems];
}
for (var i = 0, l = elems.length; i < l; i++) {
var elem = elems[i];
if (elem.nodeType === 1 && elem.className) {
if (value) {
var className = (" " + elem.className + " ").replace(/[\n\t]/g, " ");
for (var c = 0, cl = classNames.length; c < cl; c++) {
className = className.replace(" " + classNames[c] + " ", " ");
}
elem.className = rtrim(className);
} else {
elem.className = "";
}
}
}
}
return elems;
}
function hasClass(elem, value) {
var className = " " + value + " ";
return ((" " + elem.className + " ").replace(/[\n\t]/g, " ").indexOf(className) > -1);
}
function rtrim(value) {
return (value || '').replace(/^(\s|\u00A0)+|(\s|\u00A0)+$/g, "");
}
/* 数组去重
* for第三个条件不管j--还是--j都是先返回j,然后计算，下一次才使用计算后的值
* 数组中超过数组索引的值，取当前最后一项索引值
* for中第2个条件，初始化时会先执行一次，然后每次循环判断时执行一次
*/
function removeRepeatItem(items) {
if (toString.call(items) === ARRAY_VALUE) {
items.sort();
for (var len = items.length; --len; ) {
if (items[len] == items[len - 1])
items.splice(len, 1);
}
}
return items;
}
/**
* 糅杂，为一个对象添加更多成员
* @param {Object} target 目标对象
* @param {Object} source 属性包
* @return {Object} 目标对象
*/
function mix(target, source) {
var args = [].slice.call(arguments), key,
ride = typeof args[args.length - 1] == "boolean" ? args.pop() : true;
target = target || {};
for (var i = 1; source = args[i++]; ) {
for (key in source) {
if (ride || !(key in target)) {
target[key] = source[key];
}
}
}
return target;
}
/*运行版本 创建style标签来添加样式，相同id时不创建新style
* 信息保存到style id对应node上
* 传入页面上自添加的styleNodeId时，memory为空，没有影响
* @param Object hash:{selector:declaration....} => {"#bodyid":"width:200px;height:200px;"}
* @param string styleNodeId,标签id
*/
function setCss(hash, styleNodeId) {
var _styleNode = document.getElementById(styleNodeId),
_sheet = _styleNode ? (_styleNode.sheet || _styleNode.styleSheet) : null,
_createStyleSheet = (function() {
function createStyleSheet(__sheet__) {
var sheet = null;
if (!__sheet__) {
var element = document.createElement('style');
element.type = 'text/css';
element.id = styleNodeId; //id
document.getElementsByTagName('head')[0].appendChild(element);
sheet = element.sheet || element.styleSheet;
} else {
sheet = __sheet__;
}
if (typeof sheet.addRule === 'undefined') {//ff
sheet.addRule = function(selectorText, cssText, index) {
if (typeof index === 'undefined')
index = this.cssRules.length;
this.insertRule(selectorText + ' {' + cssText + '}', index);
};
}
return sheet;
}
return createStyleSheet;
})();
if (_sheet && _sheet.memory) {
for (var key in hash) {
if (!_styleNode.memory.exists(key, hash[key])) {
_styleNode.memory.set(key, hash[key]);
_sheet.addRule(key, hash[key]);
}
}
} else {
if (_sheet) {
_sheet = _createStyleSheet(_sheet);
} else {
_sheet = _createStyleSheet();
}
_styleNode = _sheet.ownerNode || _sheet.owningElement;
var memory = function() {
var keys = [], values = [], size = 0;
return {
get: function(k) {
var results = [];
for (var i = 0, l = keys.length; i < l; i++) {
if (keys[i] == k) {
results.push(values[i])
}
}
return results;
},
exists: function(k, v) {
var vs = this.get(k);
for (var i = 0, l = vs.length; i < l; i++) {
if (vs[i] == v)
return true;
}
return false;
},
set: function(k, v) {
keys.push(k);
values.push(v);
size++;
},
length: function() {
return size;
}
}
}
_styleNode.memory = memory();
for (var key in hash) {
_styleNode.memory.set(key, hash[key]);
_sheet.addRule(key, hash[key]);
}
}
}
return new Sug(textInput, config);
}
/*暂不解决
timeout jq 5241，多个请求顺序不统一，可否js中断一个请求，不再返回数据?
右键list后，输入框有焦点但不显示光标
汉字输入
宽度自适应，最大、最小宽度(不设置容器宽度ie7,se360,ie6中li会自动延生最右边若float:left则li不会充满改行)
*/
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