365 lines
9.1 KiB
JavaScript
365 lines
9.1 KiB
JavaScript
/* =============================================================
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* bootstrap-typeahead.js v2.0.0
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* http://twitter.github.com/bootstrap/javascript.html#typeahead
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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({}, $.fn.typeahead.defaults, options)
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this.matcher = this.options.matcher || this.matcher
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this.sorter = this.options.sorter || this.sorter
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this.highlighter = this.options.highlighter || this.highlighter
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this.$menu = $(this.options.menu).appendTo('body')
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if (this.options.scroll)
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this.$menu.addClass('scroll');
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this.source = this.options.source
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this.onselect = this.options.onselect
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this.strings = true
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this.shown = false
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this.deferred = null
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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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, select: function (e) {
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var val = JSON.parse(this.$menu.find('.active').attr('data-value'))
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, text
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if (!this.strings) text = val[this.options.property]
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else text = val
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this.$element.val(text)
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if (typeof this.onselect == "function")
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if (false === this.onselect(val, e))
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return;
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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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, fetch: function() {
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var value = this.source(this, this.query)
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if (value) this.process(value)
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}
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, lookup: function (event) {
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var that = this
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, items
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, q
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, value
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this.query = this.$element.val();
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/*Check if we have a match on the current source?? */
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if (typeof this.source == "function") {
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if (!this.options.delay) return this.fetch()
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if (this.deferred) clearTimeout(this.deferred)
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this.deferred = setTimeout(this.fetch.bind(this), this.options.delay)
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} else {
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this.process(this.source)
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}
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}
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, process: function (results) {
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var that = this
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, items
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, q
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if (results.length && typeof results[0] != "string")
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this.strings = false
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this.query = this.$element.val()
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if (this.query.length < this.options.minLength) {
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return this.shown ? this.hide() : this
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}
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items = $.grep(results, function (item) {
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if (!that.strings)
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item = item[that.options.property]
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if (that.matcher(item))
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return item
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})
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items = this.sorter(items)
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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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, matcher: function (item) {
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return ~item.toLowerCase().indexOf(this.query.toLowerCase())
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}
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, sorter: function (items) {
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var beginswith = []
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, caseSensitive = []
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, caseInsensitive = []
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, item
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, sortby
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while (item = items.shift()) {
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if (this.strings) sortby = item
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else sortby = item[this.options.property]
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if (!sortby.toLowerCase().indexOf(this.query.toLowerCase())) beginswith.push(item)
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else if (~sortby.indexOf(this.query)) caseSensitive.push(item)
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else caseInsensitive.push(item)
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}
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return beginswith.concat(caseSensitive, caseInsensitive)
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}
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, highlighter: function (item) {
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if (!this.query)
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return item;
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var exp = this.query.replace(/[.?*+^$[\]\\(){}|-]/g, "\\$&").replace(' ', '|')
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return item.replace(new RegExp(exp, 'ig'), '<strong>$&</strong>')
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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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var orig = item;
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i = $(that.options.item).attr('data-value', JSON.stringify(item))
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if (!that.strings) {
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if(item[that.options.render])
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item = item[that.options.render];
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else
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item = item[that.options.property];
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}
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i.find('a').html(that.highlighter(item, orig))
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return i[0]
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})
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items.first().addClass('active')
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this.$menu.html(items)
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return this
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}
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, adjustScroll: function(next) {
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var top = this.$menu.scrollTop(),
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bottom = top + this.$menu.height(),
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pos = next.position();
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if (pos.top < 0)
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this.$menu.scrollTop(top + pos.top - 10);
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else if (next.height() + top + pos.top > bottom)
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this.$menu.scrollTop(top + pos.top - this.$menu.height() + next.height() + 10);
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}
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, next: function (event) {
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var active = this.$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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if (this.options.scroll) {
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this.adjustScroll(next);
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}
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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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if (this.options.scroll) {
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this.adjustScroll(prev);
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}
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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', $.proxy(this.keyup, this))
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if (this.eventSupported('keydown')) {
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this.$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', $.proxy(this.mouseenter, this))
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}
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, eventSupported: function(eventName) {
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var isSupported = eventName in this.$element
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if (!isSupported) {
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this.$element.setAttribute(eventName, 'return;')
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isSupported = typeof this.$element[eventName] === 'function'
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}
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return isSupported
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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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if (!this.shown) return
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this.select(e)
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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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if (!this.shown) return
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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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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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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(e)
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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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, visible: function() {
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return this.shown;
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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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source: []
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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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, onselect: null
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, property: 'value'
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, render: 'info'
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, minLength: 1
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, scroll: false
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, delay: 200
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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 );
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