Created
August 21, 2012 05:38
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PLaying with collection and Bootstrap Typeahead
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Usage : | |
var view = new Typeahead({collection: data, property: "name", keyValue: "id"}); | |
it allows a way to use bootstrap typeahead over a collection and get a key like an id as data-value attribute and the main description. |
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Typeahead = Backbone.View.extend({ | |
tagName: 'input', | |
attributes: {"data-provide": "typeahead"}, | |
initialize: function(options){ | |
this.property = this.options.property; | |
this.keyValue = this.options.keyValue; | |
}, | |
render: function() { | |
this.$el.typeahead({ | |
source: this.collection.models, | |
property: this.property, | |
keyValue: this.keyValue, | |
matcher: function(model) { | |
if(_.isEmpty(this.query)) return []; | |
for(var key in model.attributes){ | |
if(~model.get(key).toLowerCase().indexOf(this.query.toLowerCase())) return true; | |
} | |
return false; | |
}, | |
sorter: function(items) { | |
var beginswith = [] | |
, caseSensitive = [] | |
, caseInsensitive = [] | |
, item | |
while (item = items.shift()) { | |
if (!item.get(this.options.property).toLowerCase().indexOf(this.query.toLowerCase())) beginswith.push(item); | |
else if (~item.get(this.options.property).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.get(this.options.property).replace(new RegExp('(' + query + ')', 'ig'), function ($1, match) { | |
return '<strong>' + match + '</strong>' | |
}) | |
}, | |
getValue: function(item) { | |
return item.get(this.options.keyValue) | |
}, | |
updater: function(item) { | |
var selected = _.find(this.source, function (model){ | |
if(~model.get(this.options.keyValue).indexOf(item)) return true; return false; | |
}, this) | |
return selected.get(this.options.property) | |
} | |
}); | |
return this; | |
} | |
}); |
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/* ============================================================= | |
* bootstrap-typeahead.js v2.0.4 | |
* http://twitter.github.com/bootstrap/javascript.html#typeahead | |
* ============================================================= | |
* Copyright 2012 Twitter, Inc. | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, | |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
* ============================================================ */ | |
!function($){ | |
"use strict"; // jshint ;_; | |
/* TYPEAHEAD PUBLIC CLASS DEFINITION | |
* ================================= */ | |
var Typeahead = function (element, options) { | |
this.$element = $(element) | |
this.options = $.extend({}, $.fn.typeahead.defaults, options) | |
this.matcher = this.options.matcher || this.matcher | |
this.sorter = this.options.sorter || this.sorter | |
this.highlighter = this.options.highlighter || this.highlighter | |
this.getValue = this.options.getValue || this.getValue | |
this.updater = this.options.updater || this.updater | |
this.$menu = $(this.options.menu).appendTo('body') | |
this.source = this.options.source | |
this.shown = false | |
this.listen() | |
} | |
Typeahead.prototype = { | |
constructor: Typeahead | |
, select: function () { | |
var val = this.$menu.find('.active').attr('data-value') | |
this.$element | |
.val(this.updater(val)) | |
.change() | |
return this.hide() | |
} | |
, updater: function (item) { | |
return item | |
} | |
, show: function () { | |
var pos = $.extend({}, this.$element.offset(), { | |
height: this.$element[0].offsetHeight | |
}) | |
this.$menu.css({ | |
top: pos.top + pos.height | |
, left: pos.left | |
}) | |
this.$menu.show() | |
this.shown = true | |
return this | |
} | |
, hide: function () { | |
this.$menu.hide() | |
this.shown = false | |
return this | |
} | |
, lookup: function (event) { | |
var that = this | |
, items | |
, q | |
this.query = this.$element.val() | |
if (!this.query) { | |
return this.shown ? this.hide() : this | |
} | |
items = $.grep(this.source, function (item) { | |
return that.matcher(item) | |
}) | |
items = this.sorter(items) | |
if (!items.length) { | |
return this.shown ? this.hide() : this | |
} | |
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>' | |
}) | |
} | |
, getValue: function(item) { | |
return item; | |
} | |
, render: function (items) { | |
var that = this | |
items = $(items).map(function (i, item) { | |
i = $(that.options.item).attr('data-value', that.getValue(item)) | |
i.find('a').html(that.highlighter(item)) | |
return i[0] | |
}) | |
items.first().addClass('active') | |
this.$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('blur', $.proxy(this.blur, this)) | |
.on('keypress', $.proxy(this.keypress, this)) | |
.on('keyup', $.proxy(this.keyup, this)) | |
if ($.browser.webkit || $.browser.msie) { | |
this.$element.on('keydown', $.proxy(this.keypress, this)) | |
} | |
this.$menu | |
.on('click', $.proxy(this.click, this)) | |
.on('mouseenter', 'li', $.proxy(this.mouseenter, this)) | |
} | |
, keyup: function (e) { | |
switch(e.keyCode) { | |
case 40: // down arrow | |
case 38: // up arrow | |
break | |
case 9: // tab | |
case 13: // enter | |
if (!this.shown) return | |
this.select() | |
break | |
case 27: // escape | |
if (!this.shown) return | |
this.hide() | |
break | |
default: | |
this.lookup() | |
} | |
e.stopPropagation() | |
e.preventDefault() | |
} | |
, keypress: function (e) { | |
if (!this.shown) return | |
switch(e.keyCode) { | |
case 9: // tab | |
case 13: // enter | |
case 27: // escape | |
e.preventDefault() | |
break | |
case 38: // up arrow | |
if (e.type != 'keydown') break | |
e.preventDefault() | |
this.prev() | |
break | |
case 40: // down arrow | |
if (e.type != 'keydown') break | |
e.preventDefault() | |
this.next() | |
break | |
} | |
e.stopPropagation() | |
} | |
, blur: function (e) { | |
var that = this | |
setTimeout(function () { that.hide() }, 150) | |
} | |
, click: function (e) { | |
e.stopPropagation() | |
e.preventDefault() | |
this.select() | |
} | |
, mouseenter: function (e) { | |
this.$menu.find('.active').removeClass('active') | |
$(e.currentTarget).addClass('active') | |
} | |
} | |
/* 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 = { | |
source: [] | |
, items: 8 | |
, menu: '<ul class="typeahead dropdown-menu"></ul>' | |
, item: '<li><a href="#"></a></li>' | |
} | |
$.fn.typeahead.Constructor = Typeahead | |
/* TYPEAHEAD DATA-API | |
* ================== */ | |
$(function () { | |
$('body').on('focus.typeahead.data-api', '[data-provide="typeahead"]', function (e) { | |
var $this = $(this) | |
if ($this.data('typeahead')) return | |
e.preventDefault() | |
$this.typeahead($this.data()) | |
}) | |
}) | |
}(window.jQuery); |
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