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/* =============================================================
* bootstrap-typeahead.js v2.0.0
* http://twitter.github.com/bootstrap/javascript.html#collapsible
* =============================================================
* Copyright 2011 Twitter, Inc.
*
* 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( $ ){
"use strict"
var Typeahead = function ( element, options ) {
this.$element = $(element)
this.options = $.extend({}, $.fn.typeahead.defaults, options)
this.$menu = $(this.options.menu).appendTo('body')
this.data = this.options.data
this.shown = false
this.listen()
}
Typeahead.prototype = {
constructor: Typeahead
, matcher: function(item, query) {
return ~item.indexOf(query)
}
, select: function(event) {
this.$element.val($(event.target).attr('data-value'))
this.hide()
}
, show: function () {
this.shown = true
this.$menu.show()
return this
}
, hide: function () {
this.shown = false
this.$menu.hide()
return this
}
, lookup: function (event) {
var query = this.$element.val()
, that = this
var items = this.data.filter(function (item) {
if (that.matcher(item, query)) {
return item
}
})
if (!items.length) {
return this.shown ? this.hide() : this
}
return this.render(items).show()
}
, render: function(items) {
var that = this
items = $(items).map(function (i, item) {
return $(that.options.item)
.text(item)
.attr('data-value', item)[0]
})
items.first().addClass('active')
this.$menu.append(items)
return this
}
, next: function (event) {
var active = this.$menu.find('.active').removeClass('active')
, next = active.next() || $(this.$menu.find('li')[0])
next.addClass('active')
}
, prev: function (event) {
var active = this.$menu.find('.active').removeClass('active')
, next = active.prev() || this.$menu.find('li').last()
next.addClass('active')
}
, keyup: function () {
event
.stopPropagation()
.preventDefault()
switch(event.keyCode) {
case 9: // tab
case 13: // enter
this.select()
break
case 27: // escape
this.hide()
break
default:
this.lookup()
}
}
, keypress: function (event) {
event.stopPropagation()
switch(event.keyCode) {
case 9: // tab
case 13: // enter
case 27: // escape
event.preventDefault()
break
case 38: // up arrow
this.prev()
event.preventDefault()
break
case 40: // down arrow
this.next()
event.preventDefault()
break
}
}
, listen: function () {
this.$element
.on('focus', this.show)
.on('blur', $.proxy(this.hide, this))
.on('keypress', $.proxy(this.keypress, this))
.on('keyup', this.keyup)
.on('change', $.proxy(this.lookup, this))
if ($.browser.webkit || $.browser.msie) {
this.$element.on('keydown', this.keypress)
}
this.$menu
.on('click', '* > *', $.proxy(this.select, this))
.on('mouseenter', function () {
/* remove selected class, add to mouseover */
})
}
}
/* TYPEAHEAD PLUGIN DEFINITION
* ============================== */
$.fn.typeahead = function ( option ) {
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') data[option]()
})
}
$.fn.typeahead.defaults = {
data: null
, items: 8
, empty: false
, noresults: false
, menu: '<ul class="dropdown-menu"></ul>'
, item: '<li></li>'
}
$.fn.typeahead.Constructor = Typeahead
}( window.jQuery )
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