app/assets/javascripts/bootstrap3-typeahead.js
/* =============================================================
* bootstrap3-typeahead.js v3.0.3
* https://github.com/bassjobsen/Bootstrap-3-Typeahead
* =============================================================
* Original written by @mdo and @fat
* =============================================================
* Copyright 2014 Bass Jobsen @bassjobsen
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============================================================ */
(function(root, factory) {
"use strict";
// CommonJS module is defined
if (typeof module !== 'undefined' && module.exports) {
module.exports = factory(require('jquery')(root));
}
// AMD module is defined
else if (typeof define === "function" && define.amd) {
define("bootstrap3-typeahead", ["jquery"], function($) {
return factory($);
});
} else {
factory(root.jQuery);
}
}(this, function($) {
"use strict";
// jshint laxcomma: true
/* TYPEAHEAD PUBLIC CLASS DEFINITION
* ================================= */
var Typeahead = function (element, options) {
this.$element = $(element);
this.options = $.extend({}, $.fn.typeahead.defaults, options);
this.matcher = this.options.matcher || this.matcher;
this.sorter = this.options.sorter || this.sorter;
this.select = this.options.select || this.select;
this.autoSelect = typeof this.options.autoSelect == 'boolean' ? this.options.autoSelect : true;
this.highlighter = this.options.highlighter || this.highlighter;
this.render = this.options.render || this.render;
this.updater = this.options.updater || this.updater;
this.source = this.options.source;
this.delay = typeof this.options.delay == 'number' ? this.options.delay : 250;
this.$menu = $(this.options.menu);
this.shown = false;
this.listen();
this.showHintOnFocus = typeof this.options.showHintOnFocus == 'boolean' ? this.options.showHintOnFocus : false;
};
Typeahead.prototype = {
constructor: Typeahead
, select: function () {
var val = this.$menu.find('.active').data('value');
if(this.autoSelect || val) {
this.$element
.val(this.updater(val))
.change();
}
return this.hide();
}
, updater: function (item) {
return item;
}
, setSource: function (source) {
this.source = source;
}
, show: function () {
var pos = $.extend({}, this.$element.position(), {
height: this.$element[0].offsetHeight
}), scrollHeight;
scrollHeight = typeof this.options.scrollHeight == 'function' ?
this.options.scrollHeight.call() :
this.options.scrollHeight;
this.$menu
.insertAfter(this.$element)
.css({
top: pos.top + pos.height + scrollHeight
, left: pos.left
})
.show();
this.shown = true;
return this;
}
, hide: function () {
this.$menu.hide();
this.shown = false;
return this;
}
, lookup: function (query) {
var items;
if (typeof(query) != 'undefined' && query !== null) {
this.query = query;
} else {
this.query = this.$element.val() || '';
}
if ((this.query.length < this.options.minLength) && !this.showHintOnFocus) {
return this.shown ? this.hide() : this;
}
var worker = $.proxy(function() {
items = $.isFunction(this.source) ? this.source(this.query, $.proxy(this.process, this)) : this.source;
if (items) {
this.process(items);
}
}, this)
clearTimeout(this.lookupWorker)
this.lookupWorker = setTimeout(worker, this.delay)
}
, process: function (items) {
var that = this;
items = $.grep(items, function (item) {
return that.matcher(item);
});
items = this.sorter(items);
if (!items.length) {
return this.shown ? this.hide() : this;
}
if (this.options.items == 'all') {
return this.render(items).show();
} else {
return this.render(items.slice(0, this.options.items)).show();
}
}
, matcher: function (item) {
return ~item.toLowerCase().indexOf(this.query.toLowerCase());
}
, sorter: function (items) {
var beginswith = []
, caseSensitive = []
, caseInsensitive = []
, item;
while ((item = items.shift())) {
if (!item.toLowerCase().indexOf(this.query.toLowerCase())) beginswith.push(item);
else if (~item.indexOf(this.query)) caseSensitive.push(item);
else caseInsensitive.push(item);
}
return beginswith.concat(caseSensitive, caseInsensitive);
}
, highlighter: function (item) {
var query = this.query.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, '\\$&');
return item.replace(new RegExp('(' + query + ')', 'ig'), function ($1, match) {
return '<strong>' + match + '</strong>';
});
}
, render: function (items) {
var that = this;
items = $(items).map(function (i, item) {
i = $(that.options.item).data('value', item);
i.find('a').html(that.highlighter(item));
return i[0];
});
if (this.autoSelect) {
items.first().addClass('active');
}
this.$menu.html(items);
return this;
}
, next: function (event) {
var active = this.$menu.find('.active').removeClass('active')
, next = active.next();
if (!next.length) {
next = $(this.$menu.find('li')[0]);
}
next.addClass('active');
}
, prev: function (event) {
var active = this.$menu.find('.active').removeClass('active')
, prev = active.prev();
if (!prev.length) {
prev = this.$menu.find('li').last();
}
prev.addClass('active');
}
, listen: function () {
this.$element
.on('focus', $.proxy(this.focus, this))
.on('blur', $.proxy(this.blur, this))
.on('keypress', $.proxy(this.keypress, this))
.on('keyup', $.proxy(this.keyup, this));
if (this.eventSupported('keydown')) {
this.$element.on('keydown', $.proxy(this.keydown, this));
}
this.$menu
.on('click', $.proxy(this.click, this))
.on('mouseenter', 'li', $.proxy(this.mouseenter, this))
.on('mouseleave', 'li', $.proxy(this.mouseleave, this));
}
, destroy : function () {
this.$element.data('typeahead',null);
this.$element
.off('focus')
.off('blur')
.off('keypress')
.off('keyup');
if (this.eventSupported('keydown')) {
this.$element.off('keydown');
}
this.$menu.remove();
}
, eventSupported: function(eventName) {
var isSupported = eventName in this.$element;
if (!isSupported) {
this.$element.setAttribute(eventName, 'return;');
isSupported = typeof this.$element[eventName] === 'function';
}
return isSupported;
}
, move: function (e) {
if (!this.shown) return;
switch(e.keyCode) {
case 9: // tab
case 13: // enter
case 27: // escape
e.preventDefault();
break;
case 38: // up arrow
e.preventDefault();
this.prev();
break;
case 40: // down arrow
e.preventDefault();
this.next();
break;
}
e.stopPropagation();
}
, keydown: function (e) {
this.suppressKeyPressRepeat = ~$.inArray(e.keyCode, [40,38,9,13,27]);
if (!this.shown && e.keyCode == 40) {
this.lookup("");
} else {
this.move(e);
}
}
, keypress: function (e) {
if (this.suppressKeyPressRepeat) return;
this.move(e);
}
, keyup: function (e) {
switch(e.keyCode) {
case 40: // down arrow
case 38: // up arrow
case 16: // shift
case 17: // ctrl
case 18: // alt
break;
case 9: // tab
case 13: // enter
if (!this.shown) return;
this.select();
break;
case 27: // escape
if (!this.shown) return;
this.hide();
break;
default:
this.lookup();
}
e.stopPropagation();
e.preventDefault();
}
, focus: function (e) {
if (!this.focused) {
this.focused = true;
if (this.options.minLength === 0 && !this.$element.val() || this.options.showHintOnFocus) {
this.lookup();
}
}
}
, blur: function (e) {
this.focused = false;
if (!this.mousedover && this.shown) this.hide();
}
, click: function (e) {
e.stopPropagation();
e.preventDefault();
this.select();
this.$element.focus();
}
, mouseenter: function (e) {
this.mousedover = true;
this.$menu.find('.active').removeClass('active');
$(e.currentTarget).addClass('active');
}
, mouseleave: function (e) {
this.mousedover = false;
if (!this.focused && this.shown) this.hide();
}
};
/* TYPEAHEAD PLUGIN DEFINITION
* =========================== */
var old = $.fn.typeahead;
$.fn.typeahead = function (option) {
var arg = arguments;
return this.each(function () {
var $this = $(this)
, data = $this.data('typeahead')
, options = typeof option == 'object' && option;
if (!data) $this.data('typeahead', (data = new Typeahead(this, options)));
if (typeof option == 'string') {
if (arg.length > 1) {
data[option].apply(data, Array.prototype.slice.call(arg ,1));
} else {
data[option]();
}
}
});
};
$.fn.typeahead.defaults = {
source: []
, items: 8
, menu: '<ul class="typeahead dropdown-menu"></ul>'
, item: '<li><a href="#"></a></li>'
, minLength: 1
, scrollHeight: 0
, autoSelect: true
};
$.fn.typeahead.Constructor = Typeahead;
/* TYPEAHEAD NO CONFLICT
* =================== */
$.fn.typeahead.noConflict = function () {
$.fn.typeahead = old;
return this;
};
/* TYPEAHEAD DATA-API
* ================== */
$(document).on('focus.typeahead.data-api', '[data-provide="typeahead"]', function (e) {
var $this = $(this);
if ($this.data('typeahead')) return;
$this.typeahead($this.data());
});
}));