148 lines
4.1 KiB
JavaScript
148 lines
4.1 KiB
JavaScript
/* ========================================================================
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* Bootstrap: dropdown.js v3.1.0
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* http://getbootstrap.com/javascript/#dropdowns
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* ========================================================================
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* Copyright 2011-2014 Twitter, Inc.
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* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
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* ======================================================================== */
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+function ($) {
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'use strict';
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// DROPDOWN CLASS DEFINITION
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// =========================
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var backdrop = '.dropdown-backdrop'
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var toggle = '[data-toggle=dropdown]'
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var Dropdown = function (element) {
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$(element).on('click.bs.dropdown', this.toggle)
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}
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Dropdown.prototype.toggle = function (e) {
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var $this = $(this)
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if ($this.is('.disabled, :disabled')) return
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var $parent = getParent($this)
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var isActive = $parent.hasClass('open')
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clearMenus()
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if (!isActive) {
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if ('ontouchstart' in document.documentElement && !$parent.closest('.navbar-nav').length) {
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// if mobile we use a backdrop because click events don't delegate
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$('<div class="dropdown-backdrop"/>').insertAfter($(this)).on('click', clearMenus)
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}
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var relatedTarget = { relatedTarget: this }
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$parent.trigger(e = $.Event('show.bs.dropdown', relatedTarget))
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if (e.isDefaultPrevented()) return
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$parent
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.toggleClass('open')
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.trigger('shown.bs.dropdown', relatedTarget)
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$this.focus()
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}
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return false
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}
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Dropdown.prototype.keydown = function (e) {
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if (!/(38|40|27)/.test(e.keyCode)) return
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var $this = $(this)
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e.preventDefault()
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e.stopPropagation()
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if ($this.is('.disabled, :disabled')) return
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var $parent = getParent($this)
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var isActive = $parent.hasClass('open')
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if (!isActive || (isActive && e.keyCode == 27)) {
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if (e.which == 27) $parent.find(toggle).focus()
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return $this.click()
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}
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var desc = ' li:not(.divider):visible a'
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var $items = $parent.find('[role=menu]' + desc + ', [role=listbox]' + desc)
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if (!$items.length) return
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var index = $items.index($items.filter(':focus'))
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if (e.keyCode == 38 && index > 0) index-- // up
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if (e.keyCode == 40 && index < $items.length - 1) index++ // down
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if (!~index) index = 0
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$items.eq(index).focus()
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}
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function clearMenus(e) {
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$(backdrop).remove()
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$(toggle).each(function () {
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var $parent = getParent($(this))
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var relatedTarget = { relatedTarget: this }
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if (!$parent.hasClass('open')) return
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$parent.trigger(e = $.Event('hide.bs.dropdown', relatedTarget))
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if (e.isDefaultPrevented()) return
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$parent.removeClass('open').trigger('hidden.bs.dropdown', relatedTarget)
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})
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}
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function getParent($this) {
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var selector = $this.attr('data-target')
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if (!selector) {
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selector = $this.attr('href')
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selector = selector && /#[A-Za-z]/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7
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}
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var $parent = selector && $(selector)
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return $parent && $parent.length ? $parent : $this.parent()
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}
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// DROPDOWN PLUGIN DEFINITION
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// ==========================
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var old = $.fn.dropdown
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$.fn.dropdown = function (option) {
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return this.each(function () {
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var $this = $(this)
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var data = $this.data('bs.dropdown')
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if (!data) $this.data('bs.dropdown', (data = new Dropdown(this)))
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if (typeof option == 'string') data[option].call($this)
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})
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}
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$.fn.dropdown.Constructor = Dropdown
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// DROPDOWN NO CONFLICT
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// ====================
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$.fn.dropdown.noConflict = function () {
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$.fn.dropdown = old
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return this
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}
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// APPLY TO STANDARD DROPDOWN ELEMENTS
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// ===================================
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$(document)
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.on('click.bs.dropdown.data-api', clearMenus)
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.on('click.bs.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() })
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.on('click.bs.dropdown.data-api', toggle, Dropdown.prototype.toggle)
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.on('keydown.bs.dropdown.data-api', toggle + ', [role=menu], [role=listbox]', Dropdown.prototype.keydown)
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}(jQuery);
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