很酷的一个自动补全插件
在bootstrap中使用typeahead插件，完成自动补全
数据源：
Local：数组
prefectch：json
remote等方式
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html：
js：
preOrderByIdVague.json：
docs 相关的事件：
typeahead.bundle.js：
= this.maxSize) {
this.list.remove(tailItem);
delete this.hash[tailItem.key];
this.size--;
}
if (node = this.hash[key]) {
node.val = val;
this.list.moveToFront(node);
} else {
node = new Node(key,val);
this.list.add(node);
this.hash[key] = node;
this.size++;
}
},get: function get(key) {
var node = this.hash[key];
if (node) {
this.list.moveToFront(node);
return node.val;
}
},reset: function reset() {
this.size = 0;
this.hash = {};
this.list = new List();
}
});
function List() {
this.head = this.tail = null;
}
_.mixin(List.prototype,{
add: function add(node) {
if (this.head) {
node.next = this.head;
this.head.prev = node;
}
this.head = node;
this.tail = this.tail || node;
},remove: function remove(node) {
node.prev ? node.prev.next = node.next : this.head = node.next;
node.next ? node.next.prev = node.prev : this.tail = node.prev;
},moveToFront: function(node) {
this.remove(node);
this.add(node);
}
});
function Node(key,val) {
this.key = key;
this.val = val;
this.prev = this.next = null;
}
return LruCache;
}();
var PersistentStorage = function() {
"use strict";
var LOCAL_STORAGE;
try {
LOCAL_STORAGE = window.localStorage;
LOCAL_STORAGE.setItem("~~~","!");
LOCAL_STORAGE.removeItem("~~~");
} catch (err) {
LOCAL_STORAGE = null;
}
function PersistentStorage(namespace,override) {
this.prefix = [ "__",namespace,"__" ].join("");
this.ttlKey = "__ttl__";
this.keyMatcher = new RegExp("^" + _.escapeRegExChars(this.prefix));
this.ls = override || LOCAL_STORAGE;
!this.ls && this._noop();
}
_.mixin(PersistentStorage.prototype,{
_prefix: function(key) {
return this.prefix + key;
},_ttlKey: function(key) {
return this._prefix(key) + this.ttlKey;
},_noop: function() {
this.get = this.set = this.remove = this.clear = this.isExpired = _.noop;
},_safeSet: function(key,val) {
try {
this.ls.setItem(key,val);
} catch (err) {
if (err.name === "QuotaExceededError") {
this.clear();
this._noop();
}
}
},get: function(key) {
if (this.isExpired(key)) {
this.remove(key);
}
return decode(this.ls.getItem(this._prefix(key)));
},set: function(key,ttl) {
if (_.isNumber(ttl)) {
this._safeSet(this._ttlKey(key),encode(now() + ttl));
} else {
this.ls.removeItem(this._ttlKey(key));
}
return this._safeSet(this._prefix(key),encode(val));
},remove: function(key) {
this.ls.removeItem(this._ttlKey(key));
this.ls.removeItem(this._prefix(key));
return this;
},clear: function() {
var i,keys = gatherMatchingKeys(this.keyMatcher);
for (i = keys.length; i--; ) {
this.remove(keys[i]);
}
return this;
},isExpired: function(key) {
var ttl = decode(this.ls.getItem(this._ttlKey(key)));
return _.isNumber(ttl) && now() > ttl ? true : false;
}
});
return PersistentStorage;
function now() {
return new Date().getTime();
}
function encode(val) {
return JSON.stringify(_.isUndefined(val) ? null : val);
}
function decode(val) {
return $.parseJSON(val);
}
function gatherMatchingKeys(keyMatcher) {
var i,keys = [],len = LOCAL_STORAGE.length;
for (i = 0; i < len; i++) {
if ((key = LOCAL_STORAGE.key(i)).match(keyMatcher)) {
keys.push(key.replace(keyMatcher,""));
}
}
return keys;
}
}();
var Transport = function() {
"use strict";
var pendingRequestsCount = 0,pendingRequests = {},maxPendingRequests = 6,sharedCache = new LruCache(10);
function Transport(o) {
o = o || {};
this.cancelled = false;
this.lastReq = null;
this._send = o.transport;
this._get = o.limiter ? o.limiter(this._get) : this._get;
this._cache = o.cache === false ? new LruCache(0) : sharedCache;
}
Transport.setMaxPendingRequests = function setMaxPendingRequests(num) {
maxPendingRequests = num;
};
Transport.resetCache = function resetCache() {
sharedCache.reset();
};
_.mixin(Transport.prototype,{
_fingerprint: function fingerprint(o) {
o = o || {};
return o.url + o.type + $.param(o.data || {});
},_get: function(o,cb) {
var that = this,fingerprint,jqXhr;
fingerprint = this._fingerprint(o);
if (this.cancelled || fingerprint !== this.lastReq) {
return;
}
if (jqXhr = pendingRequests[fingerprint]) {
jqXhr.done(done).fail(fail);
} else if (pendingRequestsCount < maxPendingRequests) {
pendingRequestsCount++;
pendingRequests[fingerprint] = this._send(o).done(done).fail(fail).always(always);
} else {
this.onDeckRequestArgs = [].slice.call(arguments,0);
}
function done(resp) {
cb(null,resp);
that._cache.set(fingerprint,resp);
}
function fail() {
cb(true);
}
function always() {
pendingRequestsCount--;
delete pendingRequests[fingerprint];
if (that.onDeckRequestArgs) {
that._get.apply(that,that.onDeckRequestArgs);
that.onDeckRequestArgs = null;
}
}
},get: function(o,cb) {
var resp,fingerprint;
cb = cb || $.noop;
o = _.isString(o) ? {
url: o
} : o || {};
fingerprint = this._fingerprint(o);
this.cancelled = false;
this.lastReq = fingerprint;
if (resp = this._cache.get(fingerprint)) {
cb(null,resp);
} else {
this._get(o,cb);
}
},cancel: function() {
this.cancelled = true;
}
});
return Transport;
}();
var SearchIndex = window.SearchIndex = function() {
"use strict";
var CHILDREN = "c",IDS = "i";
function SearchIndex(o) {
o = o || {};
if (!o.datumTokenizer || !o.queryTokenizer) {
$.error("datumTokenizer and queryTokenizer are both required");
}
this.identify = o.identify || _.stringify;
this.datumTokenizer = o.datumTokenizer;
this.queryTokenizer = o.queryTokenizer;
this.reset();
}
_.mixin(SearchIndex.prototype,{
bootstrap: function bootstrap(o) {
this.datums = o.datums;
this.trie = o.trie;
},add: function(data) {
var that = this;
data = _.isArray(data) ? data : [ data ];
_.each(data,function(datum) {
var id,tokens;
that.datums[id = that.identify(datum)] = datum;
tokens = normalizeTokens(that.datumTokenizer(datum));
_.each(tokens,function(token) {
var node,chars,ch;
node = that.trie;
chars = token.split("");
while (ch = chars.shift()) {
node = node[CHILDREN][ch] || (node[CHILDREN][ch] = newNode());
node[IDS].push(id);
}
});
});
},get: function get(ids) {
var that = this;
return _.map(ids,function(id) {
return that.datums[id];
});
},search: function search(query) {
var that = this,tokens,matches;
tokens = normalizeTokens(this.queryTokenizer(query));
_.each(tokens,ch,ids;
if (matches && matches.length === 0) {
return false;
}
node = that.trie;
chars = token.split("");
while (node && (ch = chars.shift())) {
node = node[CHILDREN][ch];
}
if (node && chars.length === 0) {
ids = node[IDS].slice(0);
matches = matches ? getIntersection(matches,ids) : ids;
} else {
matches = [];
return false;
}
});
return matches ? _.map(unique(matches),function(id) {
return that.datums[id];
}) : [];
},all: function all() {
var values = [];
for (var key in this.datums) {
values.push(this.datums[key]);
}
return values;
},reset: function reset() {
this.datums = {};
this.trie = newNode();
},serialize: function serialize() {
return {
datums: this.datums,trie: this.trie
};
}
});
return SearchIndex;
function normalizeTokens(tokens) {
tokens = _.filter(tokens,function(token) {
return !!token;
});
tokens = _.map(tokens,function(token) {
return token.toLowerCase();
});
return tokens;
}
function newNode() {
var node = {};
node[IDS] = [];
node[CHILDREN] = {};
return node;
}
function unique(array) {
var seen = {},uniques = [];
for (var i = 0,len = array.length; i < len; i++) {
if (!seen[array[i]]) {
seen[array[i]] = true;
uniques.push(array[i]);
}
}
return uniques;
}
function getIntersection(arrayA,arrayB) {
var ai = 0,bi = 0,intersection = [];
arrayA = arrayA.sort();
arrayB = arrayB.sort();
var lenArrayA = arrayA.length,lenArrayB = arrayB.length;
while (ai < lenArrayA && bi < lenArrayB) {
if (arrayA[ai] < arrayB[bi]) {
ai++;
} else if (arrayA[ai] > arrayB[bi]) {
bi++;
} else {
intersection.push(arrayA[ai]);
ai++;
bi++;
}
}
return intersection;
}
}();
var Prefetch = function() {
"use strict";
var keys;
keys = {
data: "data",protocol: "protocol",thumbprint: "thumbprint"
};
function Prefetch(o) {
this.url = o.url;
this.ttl = o.ttl;
this.cache = o.cache;
this.prepare = o.prepare;
this.transform = o.transform;
this.transport = o.transport;
this.thumbprint = o.thumbprint;
this.storage = new PersistentStorage(o.cacheKey);
}
_.mixin(Prefetch.prototype,{
_settings: function settings() {
return {
url: this.url,type: "GET",dataType: "json"
};
},store: function store(data) {
if (!this.cache) {
return;
}
this.storage.set(keys.data,data,this.ttl);
this.storage.set(keys.protocol,location.protocol,this.ttl);
this.storage.set(keys.thumbprint,this.thumbprint,this.ttl);
},fromCache: function fromCache() {
var stored = {},isExpired;
if (!this.cache) {
return null;
}
stored.data = this.storage.get(keys.data);
stored.protocol = this.storage.get(keys.protocol);
stored.thumbprint = this.storage.get(keys.thumbprint);
isExpired = stored.thumbprint !== this.thumbprint || stored.protocol !== location.protocol;
return stored.data && !isExpired ? stored.data : null;
},fromNetwork: function(cb) {
var that = this,settings;
if (!cb) {
return;
}
settings = this.prepare(this._settings());
this.transport(settings).fail(onError).done(onResponse);
function onError() {
cb(true);
}
function onResponse(resp) {
cb(null,that.transform(resp));
}
},clear: function clear() {
this.storage.clear();
return this;
}
});
return Prefetch;
}();
var Remote = function() {
"use strict";
function Remote(o) {
this.url = o.url;
this.prepare = o.prepare;
this.transform = o.transform;
this.transport = new Transport({
cache: o.cache,limiter: o.limiter,transport: o.transport
});
}
_.mixin(Remote.prototype,get: function get(query,settings;
if (!cb) {
return;
}
query = query || "";
settings = this.prepare(query,this._settings());
return this.transport.get(settings,onResponse);
function onResponse(err,resp) {
err ? cb([]) : cb(that.transform(resp));
}
},cancelLastRequest: function cancelLastRequest() {
this.transport.cancel();
}
});
return Remote;
}();
var oParser = function() {
"use strict";
return function parse(o) {
var defaults,sorter;
defaults = {
initialize: true,identify: _.stringify,datumTokenizer: null,queryTokenizer: null,sufficient: 5,sorter: null,local: [],prefetch: null,remote: null
};
o = _.mixin(defaults,o || {});
!o.datumTokenizer && $.error("datumTokenizer is required");
!o.queryTokenizer && $.error("queryTokenizer is required");
sorter = o.sorter;
o.sorter = sorter ? function(x) {
return x.sort(sorter);
} : _.identity;
o.local = _.isFunction(o.local) ? o.local() : o.local;
o.prefetch = parsePrefetch(o.prefetch);
o.remote = parseRemote(o.remote);
return o;
};
function parsePrefetch(o) {
var defaults;
if (!o) {
return null;
}
defaults = {
url: null,ttl: 24 * 60 * 60 * 1e3,cache: true,cacheKey: null,thumbprint: "",prepare: _.identity,transform: _.identity,transport: null
};
o = _.isString(o) ? {
url: o
} : o;
o = _.mixin(defaults,o);
!o.url && $.error("prefetch requires url to be set");
o.transform = o.filter || o.transform;
o.cacheKey = o.cacheKey || o.url;
o.thumbprint = VERSION + o.thumbprint;
o.transport = o.transport ? callbackToDeferred(o.transport) : $.ajax;
return o;
}
function parseRemote(o) {
var defaults;
if (!o) {
return;
}
defaults = {
url: null,prepare: null,replace: null,wildcard: null,limiter: null,rateLimitBy: "debounce",rateLimitWait: 300,o);
!o.url && $.error("remote requires url to be set");
o.transform = o.filter || o.transform;
o.prepare = toRemotePrepare(o);
o.limiter = toLimiter(o);
o.transport = o.transport ? callbackToDeferred(o.transport) : $.ajax;
delete o.replace;
delete o.wildcard;
delete o.rateLimitBy;
delete o.rateLimitWait;
return o;
}
function toRemotePrepare(o) {
var prepare,replace,wildcard;
prepare = o.prepare;
replace = o.replace;
wildcard = o.wildcard;
if (prepare) {
return prepare;
}
if (replace) {
prepare = prepareByReplace;
} else if (o.wildcard) {
prepare = prepareByWildcard;
} else {
prepare = idenityPrepare;
}
return prepare;
function prepareByReplace(query,settings) {
settings.url = replace(settings.url,query);
return settings;
}
function prepareByWildcard(query,settings) {
settings.url = settings.url.replace(wildcard,encodeURIComponent(query));
return settings;
}
function idenityPrepare(query,settings) {
return settings;
}
}
function toLimiter(o) {
var limiter,method,wait;
limiter = o.limiter;
method = o.rateLimitBy;
wait = o.rateLimitWait;
if (!limiter) {
limiter = /^throttle$/i.test(method) ? throttle(wait) : debounce(wait);
}
return limiter;
function debounce(wait) {
return function debounce(fn) {
return _.debounce(fn,wait);
};
}
function throttle(wait) {
return function throttle(fn) {
return _.throttle(fn,wait);
};
}
}
function callbackToDeferred(fn) {
return function wrapper(o) {
var deferred = $.Deferred();
fn(o,onSuccess,onError);
return deferred;
function onSuccess(resp) {
_.defer(function() {
deferred.resolve(resp);
});
}
function onError(err) {
_.defer(function() {
deferred.reject(err);
});
}
};
}
}();
var Bloodhound = function() {
"use strict";
var old;
old = window && window.Bloodhound;
function Bloodhound(o) {
o = oParser(o);
this.sorter = o.sorter;
this.identify = o.identify;
this.sufficient = o.sufficient;
this.local = o.local;
this.remote = o.remote ? new Remote(o.remote) : null;
this.prefetch = o.prefetch ? new Prefetch(o.prefetch) : null;
this.index = new SearchIndex({
identify: this.identify,datumTokenizer: o.datumTokenizer,queryTokenizer: o.queryTokenizer
});
o.initialize !== false && this.initialize();
}
Bloodhound.noConflict = function noConflict() {
window && (window.Bloodhound = old);
return Bloodhound;
};
Bloodhound.tokenizers = tokenizers;
_.mixin(Bloodhound.prototype,{
__ttAdapter: function ttAdapter() {
var that = this;
return this.remote ? withAsync : withoutAsync;
function withAsync(query,sync,async) {
return that.search(query,async);
}
function withoutAsync(query,sync) {
return that.search(query,sync);
}
},_loadPrefetch: function loadPrefetch() {
var that = this,deferred,serialized;
deferred = $.Deferred();
if (!this.prefetch) {
deferred.resolve();
} else if (serialized = this.prefetch.fromCache()) {
this.index.bootstrap(serialized);
deferred.resolve();
} else {
this.prefetch.fromNetwork(done);
}
return deferred.promise();
function done(err,data) {
if (err) {
return deferred.reject();
}
that.add(data);
that.prefetch.store(that.index.serialize());
deferred.resolve();
}
},_initialize: function initialize() {
var that = this,deferred;
this.clear();
(this.initPromise = this._loadPrefetch()).done(addLocalToIndex);
return this.initPromise;
function addLocalToIndex() {
that.add(that.local);
}
},initialize: function initialize(force) {
return !this.initPromise || force ? this._initialize() : this.initPromise;
},add: function add(data) {
this.index.add(data);
return this;
},get: function get(ids) {
ids = _.isArray(ids) ? ids : [].slice.call(arguments);
return this.index.get(ids);
},search: function search(query,async) {
var that = this,local;
local = this.sorter(this.index.search(query));
sync(this.remote ? local.slice() : local);
if (this.remote && local.length < this.sufficient) {
this.remote.get(query,processRemote);
} else if (this.remote) {
this.remote.cancelLastRequest();
}
return this;
function processRemote(remote) {
var nonDuplicates = [];
_.each(remote,function(r) {
!_.some(local,function(l) {
return that.identify(r) === that.identify(l);
}) && nonDuplicates.push(r);
});
async && async(nonDuplicates);
}
},all: function all() {
return this.index.all();
},clear: function clear() {
this.index.reset();
return this;
},clearPrefetchCache: function clearPrefetchCache() {
this.prefetch && this.prefetch.clear();
return this;
},clearRemoteCache: function clearRemoteCache() {
Transport.resetCache();
return this;
},ttAdapter: function ttAdapter() {
return this.__ttAdapter();
}
});
return Bloodhound;
}();
return Bloodhound;
});
(function(root,factory) {
if (typeof define === "function" && define.amd) {
define("typeahead.js",function(a0) {
return factory(a0);
});
} else if (typeof exports === "object") {
module.exports = factory(require("jquery"));
} else {
factory(jQuery);
}
})(this,noop: function() {}
};
}();
var WWW = function() {
"use strict";
var defaultClassNames = {
wrapper: "twitter-typeahead",input: "tt-input",hint: "tt-hint",menu: "tt-menu",dataset: "tt-dataset",suggestion: "tt-suggestion",selectable: "tt-selectable",empty: "tt-empty",open: "tt-open",cursor: "tt-cursor",highlight: "tt-highlight"
};
return build;
function build(o) {
var www,classes;
classes = _.mixin({},defaultClassNames,o);
www = {
css: buildCss(),classes: classes,html: buildHtml(classes),selectors: buildSelectors(classes)
};
return {
css: www.css,html: www.html,classes: www.classes,selectors: www.selectors,mixin: function(o) {
_.mixin(o,www);
}
};
}
function buildHtml(c) {
return {
wrapper: '',menu: '
'
};
}
function buildSelectors(classes) {
var selectors = {};
_.each(classes,function(v,k) {
selectors[k] = "." + v;
});
return selectors;
}
function buildCss() {
var css = {
wrapper: {
position: "relative",display: "inline-block"
},hint: {
position: "absolute",top: "0",left: "0",borderColor: "transparent",boxShadow: "none",opacity: "1"
},input: {
position: "relative",verticalAlign: "top",backgroundColor: "transparent"
},inputWithNoHint: {
position: "relative",verticalAlign: "top"
},menu: {
position: "absolute",top: "100%",zIndex: "100",display: "none"
},ltr: {
left: "0",right: "auto"
},rtl: {
left: "auto",right: " 0"
}
};
if (_.isMsie()) {
_.mixin(css.input,{
backgroundImage: "url(data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)"
});
}
return css;
}
}();
var EventBus = function() {
"use strict";
var namespace,deprecationMap;
namespace = "typeahead:";
deprecationMap = {
render: "rendered",cursorchange: "cursorchanged",select: "selected",autocomplete: "autocompleted"
};
function EventBus(o) {
if (!o || !o.el) {
$.error("EventBus initialized without el");
}
this.$el = $(o.el);
}
_.mixin(EventBus.prototype,{
_trigger: function(type,args) {
var $e;
$e = $.Event(namespace + type);
(args = args || []).unshift($e);
this.$el.trigger.apply(this.$el,args);
return $e;
},before: function(type) {
var args,$e;
args = [].slice.call(arguments,1);
$e = this._trigger("before" + type,args);
return $e.isDefaultPrevented();
},trigger: function(type) {
var deprecatedType;
this._trigger(type,[].slice.call(arguments,1));
if (deprecatedType = deprecationMap[type]) {
this._trigger(deprecatedType,1));
}
}
});
return EventBus;
}();
var EventEmitter = function() {
"use strict";
var splitter = /\s+/,nextTick = getNextTick();
return {
onSync: onSync,onAsync: onAsync,off: off,trigger: trigger
};
function on(method,types,cb,context) {
var type;
if (!cb) {
return this;
}
types = types.split(splitter);
cb = context ? bindContext(cb,context) : cb;
this._callbacks = this._callbacks || {};
while (type = types.shift()) {
this._callbacks[type] = this._callbacks[type] || {
sync: [],async: []
};
this._callbacks[type][method].push(cb);
}
return this;
}
function onAsync(types,context) {
return on.call(this,"async",context);
}
function onSync(types,"sync",context);
}
function off(types) {
var type;
if (!this._callbacks) {
return this;
}
types = types.split(splitter);
while (type = types.shift()) {
delete this._callbacks[type];
}
return this;
}
function trigger(types) {
var type,callbacks,syncFlush,asyncFlush;
if (!this._callbacks) {
return this;
}
types = types.split(splitter);
args = [].slice.call(arguments,1);
while ((type = types.shift()) && (callbacks = this._callbacks[type])) {
syncFlush = getFlush(callbacks.sync,this,[ type ].concat(args));
asyncFlush = getFlush(callbacks.async,[ type ].concat(args));
syncFlush() && nextTick(asyncFlush);
}
return this;
}
function getFlush(callbacks,context,args) {
return flush;
function flush() {
var cancelled;
for (var i = 0,len = callbacks.length; !cancelled && i < len; i += 1) {
cancelled = callbacks[i].apply(context,args) === false;
}
return !cancelled;
}
}
function getNextTick() {
var nextTickFn;
if (window.setImmediate) {
nextTickFn = function nextTickSetImmediate(fn) {
setImmediate(function() {
fn();
});
};
} else {
nextTickFn = function nextTickSetTimeout(fn) {
setTimeout(function() {
fn();
},0);
};
}
return nextTickFn;
}
function bindContext(fn,context) {
return fn.bind ? fn.bind(context) : function() {
fn.apply(context,0));
};
}
}();
var highlight = function(doc) {
"use strict";
var defaults = {
node: null,pattern: null,tagName: "h3",className: null,wordsOnly: false,caseSensitive: false
};
return function hightlight(o) {
var regex;
o = _.mixin({},defaults,o);
if (!o.node || !o.pattern) {
return;
}
o.pattern = _.isArray(o.pattern) ? o.pattern : [ o.pattern ];
regex = getRegex(o.pattern,o.caseSensitive,o.wordsOnly);
traverse(o.node,hightlightTextNode);
function hightlightTextNode(textNode) {
var match,patternNode,wrapperNode;
if (match = regex.exec(textNode.data)) {
wrapperNode = doc.createElement(o.tagName);
o.className && (wrapperNode.className = o.className);
patternNode = textNode.splitText(match.index);
patternNode.splitText(match[0].length);
wrapperNode.appendChild(patternNode.cloneNode(true));
textNode.parentNode.replaceChild(wrapperNode,patternNode);
}
return !!match;
}
function traverse(el,hightlightTextNode) {
var childNode,TEXT_NODE_TYPE = 3;
for (var i = 0; i < el.childNodes.length; i++) {
childNode = el.childNodes[i];
if (childNode.nodeType === TEXT_NODE_TYPE) {
i += hightlightTextNode(childNode) ? 1 : 0;
} else {
traverse(childNode,hightlightTextNode);
}
}
}
};
function getRegex(patterns,caseSensitive,wordsOnly) {
var escapedPatterns = [],regexStr;
for (var i = 0,len = patterns.length; i < len; i++) {
escapedPatterns.push(_.escapeRegExChars(patterns[i]));
}
regexStr = wordsOnly ? "\\b(" + escapedPatterns.join("|") + ")\\b" : "(" + escapedPatterns.join("|") + ")";
return caseSensitive ? new RegExp(regexStr) : new RegExp(regexStr,"i");
}
}(window.document);
var Input = function() {
"use strict";
var specialKeyCodeMap;
specialKeyCodeMap = {
9: "tab",27: "esc",37: "left",39: "right",13: "enter",38: "up",40: "down"
};
function Input(o,www) {
o = o || {};
if (!o.input) {
$.error("input is missing");
}
www.mixin(this);
this.$hint = $(o.hint);
this.$input = $(o.input);
this.query = this.$input.val();
this.queryWhenFocused = this.hasFocus() ? this.query : null;
this.$overflowHelper = buildOverflowHelper(this.$input);
this._checkLanguageDirection();
if (this.$hint.length === 0) {
this.setHint = this.getHint = this.clearHint = this.clearHintIfInvalid = _.noop;
}
}
Input.normalizeQuery = function(str) {
return _.toStr(str).replace(/^\s*/g,"").replace(/\s{2,}/g," ");
};
_.mixin(Input.prototype,EventEmitter,{
_onBlur: function onBlur() {
this.resetInputValue();
this.trigger("blurred");
},_onFocus: function onFocus() {
this.queryWhenFocused = this.query;
this.trigger("focused");
},_onKeydown: function onKeydown($e) {
var keyName = specialKeyCodeMap[$e.which || $e.keyCode];
this._managePreventDefault(keyName,$e);
if (keyName && this._shouldTrigger(keyName,$e)) {
this.trigger(keyName + "Keyed",$e);
}
},_onInput: function onInput() {
this._setQuery(this.getInputValue());
this.clearHintIfInvalid();
this._checkLanguageDirection();
},_managePreventDefault: function managePreventDefault(keyName,$e) {
var preventDefault;
switch (keyName) {
case "up":
case "down":
preventDefault = !withModifier($e);
break;
default:
preventDefault = false;
}
preventDefault && $e.preventDefault();
},_shouldTrigger: function shouldTrigger(keyName,$e) {
var trigger;
switch (keyName) {
case "tab":
trigger = !withModifier($e);
break;
default:
trigger = true;
}
return trigger;
},_checkLanguageDirection: function checkLanguageDirection() {
var dir = (this.$input.css("direction") || "ltr").toLowerCase();
if (this.dir !== dir) {
this.dir = dir;
this.$hint.attr("dir",dir);
this.trigger("langDirChanged",dir);
}
},_setQuery: function setQuery(val,silent) {
var areEquivalent,hasDifferentWhitespace;
areEquivalent = areQueriesEquivalent(val,this.query);
hasDifferentWhitespace = areEquivalent ? this.query.length !== val.length : false;
this.query = val;
if (!silent && !areEquivalent) {
this.trigger("queryChanged",this.query);
} else if (!silent && hasDifferentWhitespace) {
this.trigger("whitespaceChanged",this.query);
}
},bind: function() {
var that = this,onBlur,onFocus,onKeydown,onInput;
onBlur = _.bind(this._onBlur,this);
onFocus = _.bind(this._onFocus,this);
onKeydown = _.bind(this._onKeydown,this);
onInput = _.bind(this._onInput,this);
this.$input.on("blur.tt",onBlur).on("focus.tt",onFocus).on("keydown.tt",onKeydown);
if (!_.isMsie() || _.isMsie() > 9) {
this.$input.on("input.tt",onInput);
} else {
this.$input.on("keydown.tt keypress.tt cut.tt paste.tt",function($e) {
if (specialKeyCodeMap[$e.which || $e.keyCode]) {
return;
}
_.defer(_.bind(that._onInput,that,$e));
});
}
return this;
},focus: function focus() {
this.$input.focus();
},blur: function blur() {
this.$input.blur();
},getLangDir: function getLangDir() {
return this.dir;
},getQuery: function getQuery() {
return this.query || "";
},setQuery: function setQuery(val,silent) {
this.setInputValue(val);
this._setQuery(val,silent);
},hasQueryChangedSinceLastFocus: function hasQueryChangedSinceLastFocus() {
return this.query !== this.queryWhenFocused;
},getInputValue: function getInputValue() {
return this.$input.val();
},setInputValue: function setInputValue(value) {
this.$input.val(value);
this.clearHintIfInvalid();
this._checkLanguageDirection();
},resetInputValue: function resetInputValue() {
this.setInputValue(this.query);
},getHint: function getHint() {
return this.$hint.val();
},setHint: function setHint(value) {
this.$hint.val(value);
},clearHint: function clearHint() {
this.setHint("");
},clearHintIfInvalid: function clearHintIfInvalid() {
var val,hint,valIsPrefixOfHint,isValid;
val = this.getInputValue();
hint = this.getHint();
valIsPrefixOfHint = val !== hint && hint.indexOf(val) === 0;
isValid = val !== "" && valIsPrefixOfHint && !this.hasOverflow();
!isValid && this.clearHint();
},hasFocus: function hasFocus() {
return this.$input.is(":focus");
},hasOverflow: function hasOverflow() {
var constraint = this.$input.width() - 2;
this.$overflowHelper.text(this.getInputValue());
return this.$overflowHelper.width() >= constraint;
},isCursorAtEnd: function() {
var valueLength,selectionStart,range;
valueLength = this.$input.val().length;
selectionStart = this.$input[0].selectionStart;
if (_.isNumber(selectionStart)) {
return selectionStart === valueLength;
} else if (document.selection) {
range = document.selection.createRange();
range.moveStart("character",-valueLength);
return valueLength === range.text.length;
}
return true;
},destroy: function destroy() {
this.$hint.off(".tt");
this.$input.off(".tt");
this.$overflowHelper.remove();
this.$hint = this.$input = this.$overflowHelper = $("
");
}
});
return Input;
function buildOverflowHelper($input) {
return $('
