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Submenus with Bootstrap's dropdown.js
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| /* ======================================================================== | |
| * Bootstrap: dropdown.js v3.2.0 | |
| * http://getbootstrap.com/javascript/#dropdowns | |
| * ======================================================================== | |
| * Copyright 2011-2014 Twitter, Inc. | |
| * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) | |
| * ======================================================================== */ | |
| +function ($) { | |
| 'use strict'; | |
| // DROPDOWN CLASS DEFINITION | |
| // ========================= | |
| var backdrop = '.dropdown-backdrop' | |
| var toggle = '[data-toggle="dropdown"]' | |
| var Dropdown = function (element) { | |
| $(element).on('click.bs.dropdown', this.toggle) | |
| } | |
| Dropdown.VERSION = '3.2.0' | |
| Dropdown.prototype.toggle = function (e) { | |
| var $this = $(this) | |
| if ($this.is('.disabled, :disabled')) return | |
| var $parent = getParent($this) | |
| var isActive = $parent.hasClass('open') | |
| var isSubMenu = $parent.parents('.open').length | |
| if (! isSubMenu) | |
| clearMenus() | |
| if (isSubMenu && isActive) | |
| $parent.removeClass('open'); | |
| if (!isActive) { | |
| if ('ontouchstart' in document.documentElement && !$parent.closest('.navbar-nav').length) { | |
| // if mobile we use a backdrop because click events don't delegate | |
| $('<div class="dropdown-backdrop"/>').insertAfter($(this)).on('click', clearMenus) | |
| } | |
| var relatedTarget = { relatedTarget: this } | |
| $parent.trigger(e = $.Event('show.bs.dropdown', relatedTarget)) | |
| if (e.isDefaultPrevented()) return | |
| $this.trigger('focus') | |
| $parent | |
| .toggleClass('open') | |
| .trigger('shown.bs.dropdown', relatedTarget) | |
| } | |
| return false | |
| } | |
| Dropdown.prototype.keydown = function (e) { | |
| if (!/(38|40|27)/.test(e.keyCode)) return | |
| var $this = $(this) | |
| e.preventDefault() | |
| e.stopPropagation() | |
| if ($this.is('.disabled, :disabled')) return | |
| var $parent = getParent($this) | |
| var isActive = $parent.hasClass('open') | |
| if (!isActive || (isActive && e.keyCode == 27)) { | |
| if (e.which == 27) $parent.find(toggle).trigger('focus') | |
| return $this.trigger('click') | |
| } | |
| var desc = ' li:not(.divider):visible a' | |
| var $items = $parent.find('[role="menu"]' + desc + ', [role="listbox"]' + desc) | |
| if (!$items.length) return | |
| var index = $items.index($items.filter(':focus')) | |
| if (e.keyCode == 38 && index > 0) index-- // up | |
| if (e.keyCode == 40 && index < $items.length - 1) index++ // down | |
| if (!~index) index = 0 | |
| $items.eq(index).trigger('focus') | |
| } | |
| function clearMenus(e) { | |
| if (e && e.which === 3) return | |
| $(backdrop).remove() | |
| $(toggle).each(function () { | |
| var $parent = getParent($(this)) | |
| var relatedTarget = { relatedTarget: this } | |
| if (!$parent.hasClass('open')) return | |
| $parent.trigger(e = $.Event('hide.bs.dropdown', relatedTarget)) | |
| if (e.isDefaultPrevented()) return | |
| $parent.removeClass('open').trigger('hidden.bs.dropdown', relatedTarget) | |
| }) | |
| } | |
| function getParent($this) { | |
| var selector = $this.attr('data-target') | |
| if (!selector) { | |
| selector = $this.attr('href') | |
| selector = selector && /#[A-Za-z]/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') // strip for ie7 | |
| } | |
| var $parent = selector && $(selector) | |
| return $parent && $parent.length ? $parent : $this.parent() | |
| } | |
| // DROPDOWN PLUGIN DEFINITION | |
| // ========================== | |
| function Plugin(option) { | |
| return this.each(function () { | |
| var $this = $(this) | |
| var data = $this.data('bs.dropdown') | |
| if (!data) $this.data('bs.dropdown', (data = new Dropdown(this))) | |
| if (typeof option == 'string') data[option].call($this) | |
| }) | |
| } | |
| var old = $.fn.dropdown | |
| $.fn.dropdown = Plugin | |
| $.fn.dropdown.Constructor = Dropdown | |
| // DROPDOWN NO CONFLICT | |
| // ==================== | |
| $.fn.dropdown.noConflict = function () { | |
| $.fn.dropdown = old | |
| return this | |
| } | |
| // APPLY TO STANDARD DROPDOWN ELEMENTS | |
| // =================================== | |
| $(document) | |
| .on('click.bs.dropdown.data-api', clearMenus) | |
| .on('click.bs.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() }) | |
| .on('click.bs.dropdown.data-api', toggle, Dropdown.prototype.toggle) | |
| .on('keydown.bs.dropdown.data-api', toggle + ', [role="menu"], [role="listbox"]', Dropdown.prototype.keydown) | |
| }(jQuery); |
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