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dstaley/bootstrap-dropdown.js

Created December 21, 2015 22:08
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  1. dstaley created this gist Dec 21, 2015.
    186 changes: 186 additions & 0 deletions bootstrap-dropdown.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,186 @@
    /*!
    * Bootstrap v3.3.5 (http://getbootstrap.com)
    * Copyright 2011-2015 Twitter, Inc.
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    */

    /*!
    * Generated using the Bootstrap Customizer (http://getbootstrap.com/customize/?id=3356eb28a4f746ca1528)
    * Config saved to config.json and https://gist.github.com/3356eb28a4f746ca1528
    */
    if (typeof jQuery === 'undefined') {
    throw new Error('Bootstrap\'s JavaScript requires jQuery')
    }
    +function ($) {
    'use strict';
    var version = $.fn.jquery.split(' ')[0].split('.')
    if ((version[0] < 2 && version[1] < 9) || (version[0] == 1 && version[1] == 9 && version[2] < 1) || (version[0] > 2)) {
    throw new Error('Bootstrap\'s JavaScript requires jQuery version 1.9.1 or higher, but lower than version 3')
    }
    }(jQuery);

    /* ========================================================================
    * Bootstrap: dropdown.js v3.3.6
    * http://getbootstrap.com/javascript/#dropdowns
    * ========================================================================
    * Copyright 2011-2015 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 = '3.3.6'

    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()
    }

    function clearMenus(e) {
    if (e && e.which === 3) return
    $(backdrop).remove()
    $(toggle).each(function () {
    var $this = $(this)
    var $parent = getParent($this)
    var relatedTarget = { relatedTarget: this }

    if (!$parent.hasClass('open')) return

    if (e && e.type == 'click' && /input|textarea/i.test(e.target.tagName) && $.contains($parent[0], e.target)) return

    $parent.trigger(e = $.Event('hide.bs.dropdown', relatedTarget))

    if (e.isDefaultPrevented()) return

    $this.attr('aria-expanded', 'false')
    $parent.removeClass('open').trigger($.Event('hidden.bs.dropdown', relatedTarget))
    })
    }

    Dropdown.prototype.toggle = function (e) {
    var $this = $(this)

    if ($this.is('.disabled, :disabled')) return

    var $parent = getParent($this)
    var isActive = $parent.hasClass('open')

    clearMenus()

    if (!isActive) {
    if ('ontouchstart' in document.documentElement && !$parent.closest('.navbar-nav').length) {
    // if mobile we use a backdrop because click events don't delegate
    $(document.createElement('div'))
    .addClass('dropdown-backdrop')
    .insertAfter($(this))
    .on('click', clearMenus)
    }

    var relatedTarget = { relatedTarget: this }
    $parent.trigger(e = $.Event('show.bs.dropdown', relatedTarget))

    if (e.isDefaultPrevented()) return

    $this
    .trigger('focus')
    .attr('aria-expanded', 'true')

    $parent
    .toggleClass('open')
    .trigger($.Event('shown.bs.dropdown', relatedTarget))
    }

    return false
    }

    Dropdown.prototype.keydown = function (e) {
    if (!/(38|40|27|32)/.test(e.which) || /input|textarea/i.test(e.target.tagName)) 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 && e.which != 27 || isActive && e.which == 27) {
    if (e.which == 27) $parent.find(toggle).trigger('focus')
    return $this.trigger('click')
    }

    var desc = ' li:not(.disabled):visible a'
    var $items = $parent.find('.dropdown-menu' + desc)

    if (!$items.length) return

    var index = $items.index(e.target)

    if (e.which == 38 && index > 0) index-- // up
    if (e.which == 40 && index < $items.length - 1) index++ // down
    if (!~index) index = 0

    $items.eq(index).trigger('focus')
    }


    // 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, Dropdown.prototype.keydown)
    .on('keydown.bs.dropdown.data-api', '.dropdown-menu', Dropdown.prototype.keydown)

    }(jQuery);