scratch – Rev 134
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/*!
* typeahead.js 0.10.1
* https://github.com/twitter/typeahead.js
* Copyright 2013 Twitter, Inc. and other contributors; Licensed MIT
*/
(function($) {
var _ = {
isMsie: function() {
return /(msie|trident)/i.test(navigator.userAgent) ? navigator.userAgent.match(/(msie |rv:)(\d+(.\d+)?)/i)[2] : false;
},
isBlankString: function(str) {
return !str || /^\s*$/.test(str);
},
escapeRegExChars: function(str) {
return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
},
isString: function(obj) {
return typeof obj === "string";
},
isNumber: function(obj) {
return typeof obj === "number";
},
isArray: $.isArray,
isFunction: $.isFunction,
isObject: $.isPlainObject,
isUndefined: function(obj) {
return typeof obj === "undefined";
},
bind: $.proxy,
each: function(collection, cb) {
$.each(collection, reverseArgs);
function reverseArgs(index, value) {
return cb(value, index);
}
},
map: $.map,
filter: $.grep,
every: function(obj, test) {
var result = true;
if (!obj) {
return result;
}
$.each(obj, function(key, val) {
if (!(result = test.call(null, val, key, obj))) {
return false;
}
});
return !!result;
},
some: function(obj, test) {
var result = false;
if (!obj) {
return result;
}
$.each(obj, function(key, val) {
if (result = test.call(null, val, key, obj)) {
return false;
}
});
return !!result;
},
mixin: $.extend,
getUniqueId: function() {
var counter = 0;
return function() {
return counter++;
};
}(),
templatify: function templatify(obj) {
return $.isFunction(obj) ? obj : template;
function template() {
return String(obj);
}
},
defer: function(fn) {
setTimeout(fn, 0);
},
debounce: function(func, wait, immediate) {
var timeout, result;
return function() {
var context = this, args = arguments, later, callNow;
later = function() {
timeout = null;
if (!immediate) {
result = func.apply(context, args);
}
};
callNow = immediate && !timeout;
clearTimeout(timeout);
timeout = setTimeout(later, wait);
if (callNow) {
result = func.apply(context, args);
}
return result;
};
},
throttle: function(func, wait) {
var context, args, timeout, result, previous, later;
previous = 0;
later = function() {
previous = new Date();
timeout = null;
result = func.apply(context, args);
};
return function() {
var now = new Date(), remaining = wait - (now - previous);
context = this;
args = arguments;
if (remaining <= 0) {
clearTimeout(timeout);
timeout = null;
previous = now;
result = func.apply(context, args);
} else if (!timeout) {
timeout = setTimeout(later, remaining);
}
return result;
};
},
noop: function() {}
};
var VERSION = "0.10.1";
var LruCache = function(root, undefined) {
function LruCache(maxSize) {
this.maxSize = maxSize || 100;
this.size = 0;
this.hash = {};
this.list = new List();
}
_.mixin(LruCache.prototype, {
set: function set(key, val) {
var tailItem = this.list.tail, node;
if (this.size >= this.maxSize) {
this.list.remove(tailItem);
delete this.hash[tailItem.key];
}
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;
}
}
});
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;
}(this);
var PersistentStorage = function() {
var ls, methods;
try {
ls = window.localStorage;
ls.setItem("~~~", "!");
ls.removeItem("~~~");
} catch (err) {
ls = null;
}
function PersistentStorage(namespace) {
this.prefix = [ "__", namespace, "__" ].join("");
this.ttlKey = "__ttl__";
this.keyMatcher = new RegExp("^" + this.prefix);
}
if (ls && window.JSON) {
methods = {
_prefix: function(key) {
return this.prefix + key;
},
_ttlKey: function(key) {
return this._prefix(key) + this.ttlKey;
},
get: function(key) {
if (this.isExpired(key)) {
this.remove(key);
}
return decode(ls.getItem(this._prefix(key)));
},
set: function(key, val, ttl) {
if (_.isNumber(ttl)) {
ls.setItem(this._ttlKey(key), encode(now() + ttl));
} else {
ls.removeItem(this._ttlKey(key));
}
return ls.setItem(this._prefix(key), encode(val));
},
remove: function(key) {
ls.removeItem(this._ttlKey(key));
ls.removeItem(this._prefix(key));
return this;
},
clear: function() {
var i, key, keys = [], len = ls.length;
for (i = 0; i < len; i++) {
if ((key = ls.key(i)).match(this.keyMatcher)) {
keys.push(key.replace(this.keyMatcher, ""));
}
}
for (i = keys.length; i--; ) {
this.remove(keys[i]);
}
return this;
},
isExpired: function(key) {
var ttl = decode(ls.getItem(this._ttlKey(key)));
return _.isNumber(ttl) && now() > ttl ? true : false;
}
};
} else {
methods = {
get: _.noop,
set: _.noop,
remove: _.noop,
clear: _.noop,
isExpired: _.noop
};
}
_.mixin(PersistentStorage.prototype, methods);
return PersistentStorage;
function now() {
return new Date().getTime();
}
function encode(val) {
return JSON.stringify(_.isUndefined(val) ? null : val);
}
function decode(val) {
return JSON.parse(val);
}
}();
var Transport = function() {
var pendingRequestsCount = 0, pendingRequests = {}, maxPendingRequests = 6, requestCache = new LruCache(10);
function Transport(o) {
o = o || {};
this._send = o.transport ? callbackToDeferred(o.transport) : $.ajax;
this._get = o.rateLimiter ? o.rateLimiter(this._get) : this._get;
}
Transport.setMaxPendingRequests = function setMaxPendingRequests(num) {
maxPendingRequests = num;
};
Transport.resetCache = function clearCache() {
requestCache = new LruCache(10);
};
_.mixin(Transport.prototype, {
_get: function(url, o, cb) {
var that = this, jqXhr;
if (jqXhr = pendingRequests[url]) {
jqXhr.done(done);
} else if (pendingRequestsCount < maxPendingRequests) {
pendingRequestsCount++;
pendingRequests[url] = this._send(url, o).done(done).always(always);
} else {
this.onDeckRequestArgs = [].slice.call(arguments, 0);
}
function done(resp) {
cb && cb(resp);
requestCache.set(url, resp);
}
function always() {
pendingRequestsCount--;
delete pendingRequests[url];
if (that.onDeckRequestArgs) {
that._get.apply(that, that.onDeckRequestArgs);
that.onDeckRequestArgs = null;
}
}
},
get: function(url, o, cb) {
var that = this, resp;
if (_.isFunction(o)) {
cb = o;
o = {};
}
if (resp = requestCache.get(url)) {
_.defer(function() {
cb && cb(resp);
});
} else {
this._get(url, o, cb);
}
return !!resp;
}
});
return Transport;
function callbackToDeferred(fn) {
return function customSendWrapper(url, o) {
var deferred = $.Deferred();
fn(url, o, onSuccess, onError);
return deferred;
function onSuccess(resp) {
_.defer(function() {
deferred.resolve(resp);
});
}
function onError(err) {
_.defer(function() {
deferred.reject(err);
});
}
};
}
}();
var SearchIndex = function() {
function SearchIndex(o) {
o = o || {};
if (!o.datumTokenizer || !o.queryTokenizer) {
$.error("datumTokenizer and queryTokenizer are both required");
}
this.datumTokenizer = o.datumTokenizer;
this.queryTokenizer = o.queryTokenizer;
this.datums = [];
this.trie = newNode();
}
_.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;
id = that.datums.push(datum) - 1;
tokens = normalizeTokens(that.datumTokenizer(datum));
_.each(tokens, function(token) {
var node, chars, ch, ids;
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(query) {
var that = this, tokens, matches;
tokens = normalizeTokens(this.queryTokenizer(query));
_.each(tokens, function(token) {
var node, chars, 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];
}) : [];
},
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() {
return {
ids: [],
children: {}
};
}
function unique(array) {
var seen = {}, uniques = [];
for (var i = 0; i < array.length; 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(compare);
arrayB = arrayB.sort(compare);
while (ai < arrayA.length && bi < arrayB.length) {
if (arrayA[ai] < arrayB[bi]) {
ai++;
} else if (arrayA[ai] > arrayB[bi]) {
bi++;
} else {
intersection.push(arrayA[ai]);
ai++;
bi++;
}
}
return intersection;
function compare(a, b) {
return a - b;
}
}
}();
var oParser = function() {
return {
local: getLocal,
prefetch: getPrefetch,
remote: getRemote
};
function getLocal(o) {
var local = o.local || null;
if (_.isFunction(local)) {
local = local.call(null);
}
return local;
}
function getPrefetch(o) {
var prefetch, defaults;
defaults = {
url: null,
thumbprint: "",
ttl: 24 * 60 * 60 * 1e3,
filter: null,
ajax: {}
};
if (prefetch = o.prefetch || null) {
prefetch = _.isString(prefetch) ? {
url: prefetch
} : prefetch;
prefetch = _.mixin(defaults, prefetch);
prefetch.thumbprint = VERSION + prefetch.thumbprint;
prefetch.ajax.type = prefetch.ajax.type || "GET";
prefetch.ajax.dataType = prefetch.ajax.dataType || "json";
!prefetch.url && $.error("prefetch requires url to be set");
}
return prefetch;
}
function getRemote(o) {
var remote, defaults;
defaults = {
url: null,
wildcard: "%QUERY",
replace: null,
rateLimitBy: "debounce",
rateLimitWait: 300,
send: null,
filter: null,
ajax: {}
};
if (remote = o.remote || null) {
remote = _.isString(remote) ? {
url: remote
} : remote;
remote = _.mixin(defaults, remote);
remote.rateLimiter = /^throttle$/i.test(remote.rateLimitBy) ? byThrottle(remote.rateLimitWait) : byDebounce(remote.rateLimitWait);
remote.ajax.type = remote.ajax.type || "GET";
remote.ajax.dataType = remote.ajax.dataType || "json";
delete remote.rateLimitBy;
delete remote.rateLimitWait;
!remote.url && $.error("remote requires url to be set");
}
return remote;
function byDebounce(wait) {
return function(fn) {
return _.debounce(fn, wait);
};
}
function byThrottle(wait) {
return function(fn) {
return _.throttle(fn, wait);
};
}
}
}();
var Bloodhound = window.Bloodhound = function() {
var keys;
keys = {
data: "data",
protocol: "protocol",
thumbprint: "thumbprint"
};
function Bloodhound(o) {
if (!o || !o.local && !o.prefetch && !o.remote) {
$.error("one of local, prefetch, or remote is required");
}
this.limit = o.limit || 5;
this.sorter = getSorter(o.sorter);
this.dupDetector = o.dupDetector || ignoreDuplicates;
this.local = oParser.local(o);
this.prefetch = oParser.prefetch(o);
this.remote = oParser.remote(o);
this.cacheKey = this.prefetch ? this.prefetch.cacheKey || this.prefetch.url : null;
this.index = new SearchIndex({
datumTokenizer: o.datumTokenizer,
queryTokenizer: o.queryTokenizer
});
this.storage = this.cacheKey ? new PersistentStorage(this.cacheKey) : null;
}
Bloodhound.tokenizers = {
whitespace: function whitespaceTokenizer(s) {
return s.split(/\s+/);
},
nonword: function nonwordTokenizer(s) {
return s.split(/\W+/);
}
};
_.mixin(Bloodhound.prototype, {
_loadPrefetch: function loadPrefetch(o) {
var that = this, serialized, deferred;
if (serialized = this._readFromStorage(o.thumbprint)) {
this.index.bootstrap(serialized);
deferred = $.Deferred().resolve();
} else {
deferred = $.ajax(o.url, o.ajax).done(handlePrefetchResponse);
}
return deferred;
function handlePrefetchResponse(resp) {
var filtered;
filtered = o.filter ? o.filter(resp) : resp;
that.add(filtered);
that._saveToStorage(that.index.serialize(), o.thumbprint, o.ttl);
}
},
_getFromRemote: function getFromRemote(query, cb) {
var that = this, url, uriEncodedQuery;
query = query || "";
uriEncodedQuery = encodeURIComponent(query);
url = this.remote.replace ? this.remote.replace(this.remote.url, query) : this.remote.url.replace(this.remote.wildcard, uriEncodedQuery);
return this.transport.get(url, this.remote.ajax, handleRemoteResponse);
function handleRemoteResponse(resp) {
var filtered = that.remote.filter ? that.remote.filter(resp) : resp;
cb(filtered);
}
},
_saveToStorage: function saveToStorage(data, thumbprint, ttl) {
if (this.storage) {
this.storage.set(keys.data, data, ttl);
this.storage.set(keys.protocol, location.protocol, ttl);
this.storage.set(keys.thumbprint, thumbprint, ttl);
}
},
_readFromStorage: function readFromStorage(thumbprint) {
var stored = {}, isExpired;
if (this.storage) {
stored.data = this.storage.get(keys.data);
stored.protocol = this.storage.get(keys.protocol);
stored.thumbprint = this.storage.get(keys.thumbprint);
}
isExpired = stored.thumbprint !== thumbprint || stored.protocol !== location.protocol;
return stored.data && !isExpired ? stored.data : null;
},
initialize: function initialize() {
var that = this, deferred;
deferred = this.prefetch ? this._loadPrefetch(this.prefetch) : $.Deferred().resolve();
this.local && deferred.done(addLocalToIndex);
this.transport = this.remote ? new Transport(this.remote) : null;
this.initialize = function initialize() {
return deferred.promise();
};
return deferred.promise();
function addLocalToIndex() {
that.add(that.local);
}
},
add: function add(data) {
this.index.add(data);
},
get: function get(query, cb) {
var that = this, matches, cacheHit = false;
matches = this.index.get(query);
matches = this.sorter(matches).slice(0, this.limit);
if (matches.length < this.limit && this.transport) {
cacheHit = this._getFromRemote(query, returnRemoteMatches);
}
!cacheHit && cb && cb(matches);
function returnRemoteMatches(remoteMatches) {
var matchesWithBackfill = matches.slice(0);
_.each(remoteMatches, function(remoteMatch) {
var isDuplicate;
isDuplicate = _.some(matchesWithBackfill, function(match) {
return that.dupDetector(remoteMatch, match);
});
!isDuplicate && matchesWithBackfill.push(remoteMatch);
return matchesWithBackfill.length < that.limit;
});
cb && cb(that.sorter(matchesWithBackfill));
}
},
ttAdapter: function ttAdapter() {
return _.bind(this.get, this);
}
});
return Bloodhound;
function getSorter(sortFn) {
return _.isFunction(sortFn) ? sort : noSort;
function sort(array) {
return array.sort(sortFn);
}
function noSort(array) {
return array;
}
}
function ignoreDuplicates() {
return false;
}
}();
var html = {
wrapper: '<span class="twitter-typeahead"></span>',
dropdown: '<span class="tt-dropdown-menu"></span>',
dataset: '<div class="tt-dataset-%CLASS%"></div>',
suggestions: '<span class="tt-suggestions"></span>',
suggestion: '<div class="tt-suggestion">%BODY%</div>'
};
var css = {
wrapper: {
position: "relative",
display: "inline-block"
},
hint: {
position: "absolute",
top: "0",
left: "0",
borderColor: "transparent",
boxShadow: "none"
},
input: {
position: "relative",
verticalAlign: "top",
backgroundColor: "transparent"
},
inputWithNoHint: {
position: "relative",
verticalAlign: "top"
},
dropdown: {
position: "absolute",
top: "100%",
left: "0",
zIndex: "100",
display: "none"
},
suggestions: {
display: "block"
},
suggestion: {
whiteSpace: "nowrap",
cursor: "pointer"
},
suggestionChild: {
whiteSpace: "normal"
},
ltr: {
left: "0",
right: "auto"
},
rtl: {
left: "auto",
right: " 0"
}
};
if (_.isMsie()) {
_.mixin(css.input, {
backgroundImage: "url(data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)"
});
}
if (_.isMsie() && _.isMsie() <= 7) {
_.mixin(css.input, {
marginTop: "-1px"
});
}
var EventBus = function() {
var namespace = "typeahead:";
function EventBus(o) {
if (!o || !o.el) {
$.error("EventBus initialized without el");
}
this.$el = $(o.el);
}
_.mixin(EventBus.prototype, {
trigger: function(type) {
var args = [].slice.call(arguments, 1);
this.$el.trigger(namespace + type, args);
}
});
return EventBus;
}();
var EventEmitter = function() {
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, cb, context) {
return on.call(this, "async", types, cb, context);
}
function onSync(types, cb, context) {
return on.call(this, "sync", types, cb, 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 that = this, type, callbacks, args, 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, this, [ type ].concat(args));
syncFlush() && nextTick(asyncFlush);
}
return this;
}
function getFlush(callbacks, context, args) {
return flush;
function flush() {
var cancelled;
for (var i = 0; !cancelled && i < callbacks.length; i += 1) {
cancelled = callbacks[i].apply(context, args) === false;
}
return !cancelled;
}
}
function getNextTick() {
var nextTickFn, messageChannel;
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, [].slice.call(arguments, 0));
};
}
}();
var highlight = function(doc) {
var defaults = {
node: null,
pattern: null,
tagName: "strong",
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;
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; i < patterns.length; 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() {
var specialKeyCodeMap;
specialKeyCodeMap = {
9: "tab",
27: "esc",
37: "left",
39: "right",
13: "enter",
38: "up",
40: "down"
};
function Input(o) {
var that = this, onBlur, onFocus, onKeydown, onInput;
o = o || {};
if (!o.input) {
$.error("input is missing");
}
onBlur = _.bind(this._onBlur, this);
onFocus = _.bind(this._onFocus, this);
onKeydown = _.bind(this._onKeydown, this);
onInput = _.bind(this._onInput, this);
this.$hint = $(o.hint);
this.$input = $(o.input).on("blur.tt", onBlur).on("focus.tt", onFocus).on("keydown.tt", onKeydown);
if (this.$hint.length === 0) {
this.setHintValue = this.getHintValue = this.clearHint = _.noop;
}
if (!_.isMsie()) {
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, $e));
});
}
this.query = this.$input.val();
this.$overflowHelper = buildOverflowHelper(this.$input);
}
Input.normalizeQuery = function(str) {
return (str || "").replace(/^\s*/g, "").replace(/\s{2,}/g, " ");
};
_.mixin(Input.prototype, EventEmitter, {
_onBlur: function onBlur($e) {
this.resetInputValue();
this.trigger("blurred");
},
_onFocus: function onFocus($e) {
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", $e);
}
},
_onInput: function onInput($e) {
this._checkInputValue();
},
_managePreventDefault: function managePreventDefault(keyName, $e) {
var preventDefault, hintValue, inputValue;
switch (keyName) {
case "tab":
hintValue = this.getHintValue();
inputValue = this.getInputValue();
preventDefault = hintValue && hintValue !== inputValue && !withModifier($e);
break;
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;
},
_checkInputValue: function checkInputValue() {
var inputValue, areEquivalent, hasDifferentWhitespace;
inputValue = this.getInputValue();
areEquivalent = areQueriesEquivalent(inputValue, this.query);
hasDifferentWhitespace = areEquivalent ? this.query.length !== inputValue.length : false;
if (!areEquivalent) {
this.trigger("queryChanged", this.query = inputValue);
} else if (hasDifferentWhitespace) {
this.trigger("whitespaceChanged", this.query);
}
},
focus: function focus() {
this.$input.focus();
},
blur: function blur() {
this.$input.blur();
},
getQuery: function getQuery() {
return this.query;
},
setQuery: function setQuery(query) {
this.query = query;
},
getInputValue: function getInputValue() {
return this.$input.val();
},
setInputValue: function setInputValue(value, silent) {
this.$input.val(value);
!silent && this._checkInputValue();
},
getHintValue: function getHintValue() {
return this.$hint.val();
},
setHintValue: function setHintValue(value) {
this.$hint.val(value);
},
resetInputValue: function resetInputValue() {
this.$input.val(this.query);
},
clearHint: function clearHint() {
this.$hint.val("");
},
getLanguageDirection: function getLanguageDirection() {
return (this.$input.css("direction") || "ltr").toLowerCase();
},
hasOverflow: function hasOverflow() {
var constraint = this.$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.$hint = this.$input = this.$overflowHelper = null;
}
});
return Input;
function buildOverflowHelper($input) {
return $('<pre aria-hidden="true"></pre>').css({
position: "absolute",
visibility: "hidden",
whiteSpace: "nowrap",
fontFamily: $input.css("font-family"),
fontSize: $input.css("font-size"),
fontStyle: $input.css("font-style"),
fontVariant: $input.css("font-variant"),
fontWeight: $input.css("font-weight"),
wordSpacing: $input.css("word-spacing"),
letterSpacing: $input.css("letter-spacing"),
textIndent: $input.css("text-indent"),
textRendering: $input.css("text-rendering"),
textTransform: $input.css("text-transform")
}).insertAfter($input);
}
function areQueriesEquivalent(a, b) {
return Input.normalizeQuery(a) === Input.normalizeQuery(b);
}
function withModifier($e) {
return $e.altKey || $e.ctrlKey || $e.metaKey || $e.shiftKey;
}
}();
var Dataset = function() {
var datasetKey = "ttDataset", valueKey = "ttValue", datumKey = "ttDatum";
function Dataset(o) {
o = o || {};
o.templates = o.templates || {};
if (!o.source) {
$.error("missing source");
}
if (o.name && !isValidName(o.name)) {
$.error("invalid dataset name: " + o.name);
}
this.query = null;
this.highlight = !!o.highlight;
this.name = o.name || _.getUniqueId();
this.source = o.source;
this.displayFn = getDisplayFn(o.display || o.displayKey);
this.templates = getTemplates(o.templates, this.displayFn);
this.$el = $(html.dataset.replace("%CLASS%", this.name));
}
Dataset.extractDatasetName = function extractDatasetName(el) {
return $(el).data(datasetKey);
};
Dataset.extractValue = function extractDatum(el) {
return $(el).data(valueKey);
};
Dataset.extractDatum = function extractDatum(el) {
return $(el).data(datumKey);
};
_.mixin(Dataset.prototype, EventEmitter, {
_render: function render(query, suggestions) {
if (!this.$el) {
return;
}
var that = this, hasSuggestions;
this.$el.empty();
hasSuggestions = suggestions && suggestions.length;
if (!hasSuggestions && this.templates.empty) {
this.$el.html(getEmptyHtml()).prepend(that.templates.header ? getHeaderHtml() : null).append(that.templates.footer ? getFooterHtml() : null);
} else if (hasSuggestions) {
this.$el.html(getSuggestionsHtml()).prepend(that.templates.header ? getHeaderHtml() : null).append(that.templates.footer ? getFooterHtml() : null);
}
this.trigger("rendered");
function getEmptyHtml() {
return that.templates.empty({
query: query,
isEmpty: true
});
}
function getSuggestionsHtml() {
var $suggestions, nodes;
$suggestions = $(html.suggestions).css(css.suggestions);
nodes = _.map(suggestions, getSuggestionNode);
$suggestions.append.apply($suggestions, nodes);
that.highlight && highlight({
node: $suggestions[0],
pattern: query
});
return $suggestions;
function getSuggestionNode(suggestion) {
var $el, innerHtml, outerHtml;
innerHtml = that.templates.suggestion(suggestion);
outerHtml = html.suggestion.replace("%BODY%", innerHtml);
$el = $(outerHtml).data(datasetKey, that.name).data(valueKey, that.displayFn(suggestion)).data(datumKey, suggestion);
$el.children().each(function() {
$(this).css(css.suggestionChild);
});
return $el;
}
}
function getHeaderHtml() {
return that.templates.header({
query: query,
isEmpty: !hasSuggestions
});
}
function getFooterHtml() {
return that.templates.footer({
query: query,
isEmpty: !hasSuggestions
});
}
},
getRoot: function getRoot() {
return this.$el;
},
update: function update(query) {
var that = this;
this.query = query;
this.source(query, renderIfQueryIsSame);
function renderIfQueryIsSame(suggestions) {
query === that.query && that._render(query, suggestions);
}
},
clear: function clear() {
this._render(this.query || "");
},
isEmpty: function isEmpty() {
return this.$el.is(":empty");
},
destroy: function destroy() {
this.$el = null;
}
});
return Dataset;
function getDisplayFn(display) {
display = display || "value";
return _.isFunction(display) ? display : displayFn;
function displayFn(obj) {
return obj[display];
}
}
function getTemplates(templates, displayFn) {
return {
empty: templates.empty && _.templatify(templates.empty),
header: templates.header && _.templatify(templates.header),
footer: templates.footer && _.templatify(templates.footer),
suggestion: templates.suggestion || suggestionTemplate
};
function suggestionTemplate(context) {
return "<p>" + displayFn(context) + "</p>";
}
}
function isValidName(str) {
return /^[_a-zA-Z0-9-]+$/.test(str);
}
}();
var Dropdown = function() {
function Dropdown(o) {
var that = this, onSuggestionClick, onSuggestionMouseEnter, onSuggestionMouseLeave;
o = o || {};
if (!o.menu) {
$.error("menu is required");
}
this.isOpen = false;
this.isEmpty = true;
this.datasets = _.map(o.datasets, initializeDataset);
onSuggestionClick = _.bind(this._onSuggestionClick, this);
onSuggestionMouseEnter = _.bind(this._onSuggestionMouseEnter, this);
onSuggestionMouseLeave = _.bind(this._onSuggestionMouseLeave, this);
this.$menu = $(o.menu).on("click.tt", ".tt-suggestion", onSuggestionClick).on("mouseenter.tt", ".tt-suggestion", onSuggestionMouseEnter).on("mouseleave.tt", ".tt-suggestion", onSuggestionMouseLeave);
_.each(this.datasets, function(dataset) {
that.$menu.append(dataset.getRoot());
dataset.onSync("rendered", that._onRendered, that);
});
}
_.mixin(Dropdown.prototype, EventEmitter, {
_onSuggestionClick: function onSuggestionClick($e) {
this.trigger("suggestionClicked", $($e.currentTarget));
},
_onSuggestionMouseEnter: function onSuggestionMouseEnter($e) {
this._removeCursor();
this._setCursor($($e.currentTarget), true);
},
_onSuggestionMouseLeave: function onSuggestionMouseLeave($e) {
this._removeCursor();
},
_onRendered: function onRendered() {
this.isEmpty = _.every(this.datasets, isDatasetEmpty);
this.isEmpty ? this._hide() : this.isOpen && this._show();
this.trigger("datasetRendered");
function isDatasetEmpty(dataset) {
return dataset.isEmpty();
}
},
_hide: function() {
this.$menu.hide();
},
_show: function() {
this.$menu.css("display", "block");
},
_getSuggestions: function getSuggestions() {
return this.$menu.find(".tt-suggestion");
},
_getCursor: function getCursor() {
return this.$menu.find(".tt-cursor").first();
},
_setCursor: function setCursor($el, silent) {
$el.first().addClass("tt-cursor");
!silent && this.trigger("cursorMoved");
},
_removeCursor: function removeCursor() {
this._getCursor().removeClass("tt-cursor");
},
_moveCursor: function moveCursor(increment) {
var $suggestions, $oldCursor, newCursorIndex, $newCursor;
if (!this.isOpen) {
return;
}
$oldCursor = this._getCursor();
$suggestions = this._getSuggestions();
this._removeCursor();
newCursorIndex = $suggestions.index($oldCursor) + increment;
newCursorIndex = (newCursorIndex + 1) % ($suggestions.length + 1) - 1;
if (newCursorIndex === -1) {
this.trigger("cursorRemoved");
return;
} else if (newCursorIndex < -1) {
newCursorIndex = $suggestions.length - 1;
}
this._setCursor($newCursor = $suggestions.eq(newCursorIndex));
this._ensureVisible($newCursor);
},
_ensureVisible: function ensureVisible($el) {
var elTop, elBottom, menuScrollTop, menuHeight;
elTop = $el.position().top;
elBottom = elTop + $el.outerHeight(true);
menuScrollTop = this.$menu.scrollTop();
menuHeight = this.$menu.height() + parseInt(this.$menu.css("paddingTop"), 10) + parseInt(this.$menu.css("paddingBottom"), 10);
if (elTop < 0) {
this.$menu.scrollTop(menuScrollTop + elTop);
} else if (menuHeight < elBottom) {
this.$menu.scrollTop(menuScrollTop + (elBottom - menuHeight));
}
},
close: function close() {
if (this.isOpen) {
this.isOpen = false;
this._removeCursor();
this._hide();
this.trigger("closed");
}
},
open: function open() {
if (!this.isOpen) {
this.isOpen = true;
!this.isEmpty && this._show();
this.trigger("opened");
}
},
setLanguageDirection: function setLanguageDirection(dir) {
this.$menu.css(dir === "ltr" ? css.ltr : css.rtl);
},
moveCursorUp: function moveCursorUp() {
this._moveCursor(-1);
},
moveCursorDown: function moveCursorDown() {
this._moveCursor(+1);
},
getDatumForSuggestion: function getDatumForSuggestion($el) {
var datum = null;
if ($el.length) {
datum = {
raw: Dataset.extractDatum($el),
value: Dataset.extractValue($el),
datasetName: Dataset.extractDatasetName($el)
};
}
return datum;
},
getDatumForCursor: function getDatumForCursor() {
return this.getDatumForSuggestion(this._getCursor().first());
},
getDatumForTopSuggestion: function getDatumForTopSuggestion() {
return this.getDatumForSuggestion(this._getSuggestions().first());
},
update: function update(query) {
_.each(this.datasets, updateDataset);
function updateDataset(dataset) {
dataset.update(query);
}
},
empty: function empty() {
_.each(this.datasets, clearDataset);
this.isEmpty = true;
function clearDataset(dataset) {
dataset.clear();
}
},
isVisible: function isVisible() {
return this.isOpen && !this.isEmpty;
},
destroy: function destroy() {
this.$menu.off(".tt");
this.$menu = null;
_.each(this.datasets, destroyDataset);
function destroyDataset(dataset) {
dataset.destroy();
}
}
});
return Dropdown;
function initializeDataset(oDataset) {
return new Dataset(oDataset);
}
}();
var Typeahead = function() {
var attrsKey = "ttAttrs";
function Typeahead(o) {
var $menu, $input, $hint, datasets;
o = o || {};
if (!o.input) {
$.error("missing input");
}
this.autoselect = !!o.autoselect;
this.minLength = _.isNumber(o.minLength) ? o.minLength : 1;
this.$node = buildDomStructure(o.input, o.withHint);
$menu = this.$node.find(".tt-dropdown-menu");
$input = this.$node.find(".tt-input");
$hint = this.$node.find(".tt-hint");
this.eventBus = o.eventBus || new EventBus({
el: $input
});
this.dropdown = new Dropdown({
menu: $menu,
datasets: o.datasets
}).onSync("suggestionClicked", this._onSuggestionClicked, this).onSync("cursorMoved", this._onCursorMoved, this).onSync("cursorRemoved", this._onCursorRemoved, this).onSync("opened", this._onOpened, this).onSync("closed", this._onClosed, this).onAsync("datasetRendered", this._onDatasetRendered, this);
this.input = new Input({
input: $input,
hint: $hint
}).onSync("focused", this._onFocused, this).onSync("blurred", this._onBlurred, this).onSync("enterKeyed", this._onEnterKeyed, this).onSync("tabKeyed", this._onTabKeyed, this).onSync("escKeyed", this._onEscKeyed, this).onSync("upKeyed", this._onUpKeyed, this).onSync("downKeyed", this._onDownKeyed, this).onSync("leftKeyed", this._onLeftKeyed, this).onSync("rightKeyed", this._onRightKeyed, this).onSync("queryChanged", this._onQueryChanged, this).onSync("whitespaceChanged", this._onWhitespaceChanged, this);
$menu.on("mousedown.tt", function($e) {
if (_.isMsie() && _.isMsie() < 9) {
$input[0].onbeforedeactivate = function() {
window.event.returnValue = false;
$input[0].onbeforedeactivate = null;
};
}
$e.preventDefault();
});
}
_.mixin(Typeahead.prototype, {
_onSuggestionClicked: function onSuggestionClicked(type, $el) {
var datum;
if (datum = this.dropdown.getDatumForSuggestion($el)) {
this._select(datum);
}
},
_onCursorMoved: function onCursorMoved() {
var datum = this.dropdown.getDatumForCursor();
this.input.clearHint();
this.input.setInputValue(datum.value, true);
this.eventBus.trigger("cursorchanged", datum.raw, datum.datasetName);
},
_onCursorRemoved: function onCursorRemoved() {
this.input.resetInputValue();
this._updateHint();
},
_onDatasetRendered: function onDatasetRendered() {
this._updateHint();
},
_onOpened: function onOpened() {
this._updateHint();
this.eventBus.trigger("opened");
},
_onClosed: function onClosed() {
this.input.clearHint();
this.eventBus.trigger("closed");
},
_onFocused: function onFocused() {
this.dropdown.empty();
this.dropdown.open();
},
_onBlurred: function onBlurred() {
this.dropdown.close();
},
_onEnterKeyed: function onEnterKeyed(type, $e) {
var cursorDatum, topSuggestionDatum;
cursorDatum = this.dropdown.getDatumForCursor();
topSuggestionDatum = this.dropdown.getDatumForTopSuggestion();
if (cursorDatum) {
this._select(cursorDatum);
$e.preventDefault();
} else if (this.autoselect && topSuggestionDatum) {
this._select(topSuggestionDatum);
$e.preventDefault();
}
},
_onTabKeyed: function onTabKeyed(type, $e) {
var datum;
if (datum = this.dropdown.getDatumForCursor()) {
this._select(datum);
$e.preventDefault();
} else {
this._autocomplete();
}
},
_onEscKeyed: function onEscKeyed() {
this.dropdown.close();
this.input.resetInputValue();
},
_onUpKeyed: function onUpKeyed() {
var query = this.input.getQuery();
if (!this.dropdown.isOpen && query.length >= this.minLength) {
this.dropdown.update(query);
}
this.dropdown.open();
this.dropdown.moveCursorUp();
},
_onDownKeyed: function onDownKeyed() {
var query = this.input.getQuery();
if (!this.dropdown.isOpen && query.length >= this.minLength) {
this.dropdown.update(query);
}
this.dropdown.open();
this.dropdown.moveCursorDown();
},
_onLeftKeyed: function onLeftKeyed() {
this.dir === "rtl" && this._autocomplete();
},
_onRightKeyed: function onRightKeyed() {
this.dir === "ltr" && this._autocomplete();
},
_onQueryChanged: function onQueryChanged(e, query) {
this.input.clearHint();
this.dropdown.empty();
query.length >= this.minLength && this.dropdown.update(query);
this.dropdown.open();
this._setLanguageDirection();
},
_onWhitespaceChanged: function onWhitespaceChanged() {
this._updateHint();
this.dropdown.open();
},
_setLanguageDirection: function setLanguageDirection() {
var dir;
if (this.dir !== (dir = this.input.getLanguageDirection())) {
this.dir = dir;
this.$node.css("direction", dir);
this.dropdown.setLanguageDirection(dir);
}
},
_updateHint: function updateHint() {
var datum, inputValue, query, escapedQuery, frontMatchRegEx, match;
datum = this.dropdown.getDatumForTopSuggestion();
if (datum && this.dropdown.isVisible() && !this.input.hasOverflow()) {
inputValue = this.input.getInputValue();
query = Input.normalizeQuery(inputValue);
escapedQuery = _.escapeRegExChars(query);
frontMatchRegEx = new RegExp("^(?:" + escapedQuery + ")(.*$)", "i");
match = frontMatchRegEx.exec(datum.value);
this.input.setHintValue(inputValue + (match ? match[1] : ""));
}
},
_autocomplete: function autocomplete() {
var hint, query, datum;
hint = this.input.getHintValue();
query = this.input.getQuery();
if (hint && query !== hint && this.input.isCursorAtEnd()) {
datum = this.dropdown.getDatumForTopSuggestion();
datum && this.input.setInputValue(datum.value);
this.eventBus.trigger("autocompleted", datum.raw, datum.datasetName);
}
},
_select: function select(datum) {
this.input.clearHint();
this.input.setQuery(datum.value);
this.input.setInputValue(datum.value, true);
this._setLanguageDirection();
this.eventBus.trigger("selected", datum.raw, datum.datasetName);
this.dropdown.close();
_.defer(_.bind(this.dropdown.empty, this.dropdown));
},
open: function open() {
this.dropdown.open();
},
close: function close() {
this.dropdown.close();
},
getQuery: function getQuery() {
return this.input.getQuery();
},
setQuery: function setQuery(val) {
this.input.setInputValue(val);
},
destroy: function destroy() {
this.input.destroy();
this.dropdown.destroy();
destroyDomStructure(this.$node);
this.$node = null;
}
});
return Typeahead;
function buildDomStructure(input, withHint) {
var $input, $wrapper, $dropdown, $hint;
$input = $(input);
$wrapper = $(html.wrapper).css(css.wrapper);
$dropdown = $(html.dropdown).css(css.dropdown);
$hint = $input.clone().css(css.hint).css(getBackgroundStyles($input));
$hint.val("").removeData().addClass("tt-hint").removeAttr("id name placeholder").prop("disabled", true).attr({
autocomplete: "off",
spellcheck: "false"
});
$input.data(attrsKey, {
dir: $input.attr("dir"),
autocomplete: $input.attr("autocomplete"),
spellcheck: $input.attr("spellcheck"),
style: $input.attr("style")
});
$input.addClass("tt-input").attr({
autocomplete: "off",
spellcheck: false
}).css(withHint ? css.input : css.inputWithNoHint);
try {
!$input.attr("dir") && $input.attr("dir", "auto");
} catch (e) {}
return $input.wrap($wrapper).parent().prepend(withHint ? $hint : null).append($dropdown);
}
function getBackgroundStyles($el) {
return {
backgroundAttachment: $el.css("background-attachment"),
backgroundClip: $el.css("background-clip"),
backgroundColor: $el.css("background-color"),
backgroundImage: $el.css("background-image"),
backgroundOrigin: $el.css("background-origin"),
backgroundPosition: $el.css("background-position"),
backgroundRepeat: $el.css("background-repeat"),
backgroundSize: $el.css("background-size")
};
}
function destroyDomStructure($node) {
var $input = $node.find(".tt-input");
_.each($input.data(attrsKey), function(val, key) {
_.isUndefined(val) ? $input.removeAttr(key) : $input.attr(key, val);
});
$input.detach().removeData(attrsKey).removeClass("tt-input").insertAfter($node);
$node.remove();
}
}();
(function() {
var old, typeaheadKey, methods;
old = $.fn.typeahead;
typeaheadKey = "ttTypeahead";
methods = {
initialize: function initialize(o, datasets) {
datasets = _.isArray(datasets) ? datasets : [].slice.call(arguments, 1);
o = o || {};
return this.each(attach);
function attach() {
var $input = $(this), eventBus, typeahead;
_.each(datasets, function(d) {
d.highlight = !!o.highlight;
});
typeahead = new Typeahead({
input: $input,
eventBus: eventBus = new EventBus({
el: $input
}),
withHint: _.isUndefined(o.hint) ? true : !!o.hint,
minLength: o.minLength,
autoselect: o.autoselect,
datasets: datasets
});
$input.data(typeaheadKey, typeahead);
}
},
open: function open() {
return this.each(openTypeahead);
function openTypeahead() {
var $input = $(this), typeahead;
if (typeahead = $input.data(typeaheadKey)) {
typeahead.open();
}
}
},
close: function close() {
return this.each(closeTypeahead);
function closeTypeahead() {
var $input = $(this), typeahead;
if (typeahead = $input.data(typeaheadKey)) {
typeahead.close();
}
}
},
val: function val(newVal) {
return !arguments.length ? getQuery(this.first()) : this.each(setQuery);
function setQuery() {
var $input = $(this), typeahead;
if (typeahead = $input.data(typeaheadKey)) {
typeahead.setQuery(newVal);
}
}
function getQuery($input) {
var typeahead, query;
if (typeahead = $input.data(typeaheadKey)) {
query = typeahead.getQuery();
}
return query;
}
},
destroy: function destroy() {
return this.each(unattach);
function unattach() {
var $input = $(this), typeahead;
if (typeahead = $input.data(typeaheadKey)) {
typeahead.destroy();
$input.removeData(typeaheadKey);
}
}
}
};
$.fn.typeahead = function(method) {
if (methods[method]) {
return methods[method].apply(this, [].slice.call(arguments, 1));
} else {
return methods.initialize.apply(this, arguments);
}
};
$.fn.typeahead.noConflict = function noConflict() {
$.fn.typeahead = old;
return this;
};
})();
})(window.jQuery);
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