242 lines
5.7 KiB
JavaScript
242 lines
5.7 KiB
JavaScript
/* =============================================================
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* bootstrap-typeahead.js v2.0.0
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* http://twitter.github.com/bootstrap/javascript.html#collapsible
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* =============================================================
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* Copyright 2012 Twitter, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* ============================================================ */
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!function( $ ){
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"use strict"
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var Typeahead = function ( element, options ) {
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this.$element = $(element)
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this.options = $.extend({}, $.fn.typeahead.defaults, options)
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this.$menu = $(this.options.menu).appendTo('body')
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this.data = this.options.data
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this.shown = false
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this.listen()
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}
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Typeahead.prototype = {
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constructor: Typeahead
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, matcher: function (item, query) {
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// ;_; http://jsperf.com/asdfdfasdfa
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return ~item.toLowerCase().indexOf(query.toLowerCase())
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}
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, select: function () {
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var val = this.$menu.find('.active').attr('data-value')
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this.$element.val(val)
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return this.hide()
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}
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, show: function () {
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var pos = $.extend({}, this.$element.offset(), {
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height: this.$element[0].offsetHeight
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})
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this.$menu.css({
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top: pos.top + pos.height
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, left: pos.left
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})
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this.$menu.show()
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this.shown = true
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return this
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}
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, hide: function () {
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this.$menu.hide()
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this.shown = false
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return this
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}
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, lookup: function (event) {
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var query = this.$element.val()
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, that = this
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, items
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if (!query) {
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return this.shown ? this.hide() : this
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}
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items = this.data.filter(function (item) {
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if (that.matcher(item, query)) return item
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})
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if (!items.length) {
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return this.shown ? this.hide() : this
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}
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return this.render(items.slice(0, this.options.items)).show()
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}
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, render: function (items) {
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var that = this
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items = $(items).map(function (i, item) {
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i = $(that.options.item).attr('data-value', item)
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i.find('a').text(item)
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return i[0]
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})
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items.first().addClass('active')
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this.$menu.html(items)
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return this
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}
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, next: function (event) {
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var active = this.$menu.find('.active').removeClass('active')
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, next = active.next()
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if (!next.length) {
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next = $(this.$menu.find('li')[0])
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}
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next.addClass('active')
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}
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, prev: function (event) {
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var active = this.$menu.find('.active').removeClass('active')
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, prev = active.prev()
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if (!prev.length) {
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prev = this.$menu.find('li').last()
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}
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prev.addClass('active')
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}
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, keyup: function (e) {
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e.stopPropagation()
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e.preventDefault()
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switch(e.keyCode) {
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case 40: // down arrow
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case 38: // up arrow
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break
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case 9: // tab
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case 13: // enter
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this.select()
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break
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case 27: // escape
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this.hide()
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break
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default:
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this.lookup()
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}
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}
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, keypress: function (e) {
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e.stopPropagation()
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switch(e.keyCode) {
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case 9: // tab
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case 13: // enter
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case 27: // escape
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e.preventDefault()
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break
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case 38: // up arrow
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if (!this.shown) return
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e.preventDefault()
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this.prev()
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break
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case 40: // down arrow
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if (!this.shown) return
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e.preventDefault()
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this.next()
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break
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}
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}
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, blur: function (e) {
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var that = this
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e.stopPropagation()
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e.preventDefault()
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setTimeout(function () { that.hide() }, 150)
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}
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, click: function (e) {
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e.stopPropagation()
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e.preventDefault()
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this.select()
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}
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, mouseenter: function (e) {
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this.$menu.find('.active').removeClass('active')
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$(e.currentTarget).addClass('active')
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}
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, listen: function () {
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this.$element
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.on('blur', $.proxy(this.blur, this))
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.on('keypress', $.proxy(this.keypress, this))
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.on('keyup', $.proxy(this.keyup, this))
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if ($.browser.webkit || $.browser.msie) {
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this.$element.on('keydown', $.proxy(this.keypress, this))
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}
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this.$menu
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.on('click', $.proxy(this.click, this))
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.on('mouseenter', 'li', $.proxy(this.mouseenter, this))
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}
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}
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/* TYPEAHEAD PLUGIN DEFINITION
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* =========================== */
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$.fn.typeahead = function ( option ) {
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return this.each(function () {
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var $this = $(this)
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, data = $this.data('typeahead')
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, options = typeof option == 'object' && option
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if (!data) $this.data('typeahead', (data = new Typeahead(this, options)))
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if (typeof option == 'string') data[option]()
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})
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}
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$.fn.typeahead.defaults = {
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items: 8
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, menu: '<ul class="typeahead dropdown-menu"></ul>'
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, item: '<li><a href="#"></a></li>'
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}
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$.fn.typeahead.Constructor = Typeahead
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/* TYPEAHEAD DATA-API
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* ================== */
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$(function () {
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$('body').on('focus.typeahead.data-api', '[data-provide="typeahead"]', function (e) {
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var $this = $(this)
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if ($this.data('typeahead')) return
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e.preventDefault()
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$this.typeahead($this.data())
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})
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})
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}( window.jQuery ) |