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Bootstrap/dist/js/umd/dropdown.js

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(function (global, factory) {
if (typeof define === 'function' && define.amd) {
define(['exports', 'module', './util'], factory);
} else if (typeof exports !== 'undefined' && typeof module !== 'undefined') {
factory(exports, module, require('./util'));
} else {
var mod = {
exports: {}
};
factory(mod.exports, mod, global.Util);
global.dropdown = mod.exports;
}
})(this, function (exports, module, _util) {
'use strict';
var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
var _Util = _interopRequireDefault(_util);
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/**
* --------------------------------------------------------------------------
* Bootstrap (v4.0.0-alpha.2): dropdown.js
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* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* --------------------------------------------------------------------------
*/
var Dropdown = (function ($) {
/**
* ------------------------------------------------------------------------
* Constants
* ------------------------------------------------------------------------
*/
var NAME = 'dropdown';
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var VERSION = '4.0.0-alpha.2';
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var DATA_KEY = 'bs.dropdown';
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var EVENT_KEY = '.' + DATA_KEY;
var DATA_API_KEY = '.data-api';
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var JQUERY_NO_CONFLICT = $.fn[NAME];
var Event = {
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HIDE: 'hide' + EVENT_KEY,
HIDDEN: 'hidden' + EVENT_KEY,
SHOW: 'show' + EVENT_KEY,
SHOWN: 'shown' + EVENT_KEY,
CLICK: 'click' + EVENT_KEY,
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CLICK_DATA_API: 'click' + EVENT_KEY + DATA_API_KEY,
KEYDOWN_DATA_API: 'keydown' + EVENT_KEY + DATA_API_KEY
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};
var ClassName = {
BACKDROP: 'dropdown-backdrop',
DISABLED: 'disabled',
OPEN: 'open'
};
var Selector = {
BACKDROP: '.dropdown-backdrop',
DATA_TOGGLE: '[data-toggle="dropdown"]',
FORM_CHILD: '.dropdown form',
ROLE_MENU: '[role="menu"]',
ROLE_LISTBOX: '[role="listbox"]',
NAVBAR_NAV: '.navbar-nav',
VISIBLE_ITEMS: '[role="menu"] li:not(.disabled) a, ' + '[role="listbox"] li:not(.disabled) a'
};
/**
* ------------------------------------------------------------------------
* Class Definition
* ------------------------------------------------------------------------
*/
var Dropdown = (function () {
function Dropdown(element) {
_classCallCheck(this, Dropdown);
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this._element = element;
this._addEventListeners();
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}
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/**
* ------------------------------------------------------------------------
* Data Api implementation
* ------------------------------------------------------------------------
*/
// getters
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_createClass(Dropdown, [{
key: 'toggle',
// public
value: function toggle() {
if (this.disabled || $(this).hasClass(ClassName.DISABLED)) {
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return false;
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}
var parent = Dropdown._getParentFromElement(this);
var isActive = $(parent).hasClass(ClassName.OPEN);
Dropdown._clearMenus();
if (isActive) {
return false;
}
if ('ontouchstart' in document.documentElement && !$(parent).closest(Selector.NAVBAR_NAV).length) {
// if mobile we use a backdrop because click events don't delegate
var dropdown = document.createElement('div');
dropdown.className = ClassName.BACKDROP;
$(dropdown).insertBefore(this);
$(dropdown).on('click', Dropdown._clearMenus);
}
var relatedTarget = { relatedTarget: this };
var showEvent = $.Event(Event.SHOW, relatedTarget);
$(parent).trigger(showEvent);
if (showEvent.isDefaultPrevented()) {
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return false;
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}
this.focus();
this.setAttribute('aria-expanded', 'true');
$(parent).toggleClass(ClassName.OPEN);
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$(parent).trigger($.Event(Event.SHOWN, relatedTarget));
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return false;
}
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}, {
key: 'dispose',
value: function dispose() {
$.removeData(this._element, DATA_KEY);
$(this._element).off(EVENT_KEY);
this._element = null;
}
// private
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}, {
key: '_addEventListeners',
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value: function _addEventListeners() {
$(this._element).on(Event.CLICK, this.toggle);
}
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// static
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}], [{
key: '_jQueryInterface',
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value: function _jQueryInterface(config) {
return this.each(function () {
var data = $(this).data(DATA_KEY);
if (!data) {
$(this).data(DATA_KEY, data = new Dropdown(this));
}
if (typeof config === 'string') {
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if (data[config] === undefined) {
throw new Error('No method named "' + config + '"');
}
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data[config].call(this);
}
});
}
}, {
key: '_clearMenus',
value: function _clearMenus(event) {
if (event && event.which === 3) {
return;
}
var backdrop = $(Selector.BACKDROP)[0];
if (backdrop) {
backdrop.parentNode.removeChild(backdrop);
}
var toggles = $.makeArray($(Selector.DATA_TOGGLE));
for (var i = 0; i < toggles.length; i++) {
var _parent = Dropdown._getParentFromElement(toggles[i]);
var relatedTarget = { relatedTarget: toggles[i] };
if (!$(_parent).hasClass(ClassName.OPEN)) {
continue;
}
if (event && event.type === 'click' && /input|textarea/i.test(event.target.tagName) && $.contains(_parent, event.target)) {
continue;
}
var hideEvent = $.Event(Event.HIDE, relatedTarget);
$(_parent).trigger(hideEvent);
if (hideEvent.isDefaultPrevented()) {
continue;
}
toggles[i].setAttribute('aria-expanded', 'false');
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$(_parent).removeClass(ClassName.OPEN).trigger($.Event(Event.HIDDEN, relatedTarget));
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}
}
}, {
key: '_getParentFromElement',
value: function _getParentFromElement(element) {
var parent = undefined;
var selector = _Util['default'].getSelectorFromElement(element);
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if (selector) {
parent = $(selector)[0];
}
return parent || element.parentNode;
}
}, {
key: '_dataApiKeydownHandler',
value: function _dataApiKeydownHandler(event) {
if (!/(38|40|27|32)/.test(event.which) || /input|textarea/i.test(event.target.tagName)) {
return;
}
event.preventDefault();
event.stopPropagation();
if (this.disabled || $(this).hasClass(ClassName.DISABLED)) {
return;
}
var parent = Dropdown._getParentFromElement(this);
var isActive = $(parent).hasClass(ClassName.OPEN);
if (!isActive && event.which !== 27 || isActive && event.which === 27) {
if (event.which === 27) {
var toggle = $(parent).find(Selector.DATA_TOGGLE)[0];
$(toggle).trigger('focus');
}
$(this).trigger('click');
return;
}
var items = $.makeArray($(Selector.VISIBLE_ITEMS));
items = items.filter(function (item) {
return item.offsetWidth || item.offsetHeight;
});
if (!items.length) {
return;
}
var index = items.indexOf(event.target);
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if (event.which === 38 && index > 0) {
// up
index--;
}
if (event.which === 40 && index < items.length - 1) {
// down
index++;
}
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if (index < 0) {
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index = 0;
}
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items[index].focus();
}
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}, {
key: 'VERSION',
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get: function get() {
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return VERSION;
}
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}]);
return Dropdown;
})();
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$(document).on(Event.KEYDOWN_DATA_API, Selector.DATA_TOGGLE, Dropdown._dataApiKeydownHandler).on(Event.KEYDOWN_DATA_API, Selector.ROLE_MENU, Dropdown._dataApiKeydownHandler).on(Event.KEYDOWN_DATA_API, Selector.ROLE_LISTBOX, Dropdown._dataApiKeydownHandler).on(Event.CLICK_DATA_API, Dropdown._clearMenus).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, Dropdown.prototype.toggle).on(Event.CLICK_DATA_API, Selector.FORM_CHILD, function (e) {
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e.stopPropagation();
});
/**
* ------------------------------------------------------------------------
* jQuery
* ------------------------------------------------------------------------
*/
$.fn[NAME] = Dropdown._jQueryInterface;
$.fn[NAME].Constructor = Dropdown;
$.fn[NAME].noConflict = function () {
$.fn[NAME] = JQUERY_NO_CONFLICT;
return Dropdown._jQueryInterface;
};
return Dropdown;
})(jQuery);
module.exports = Dropdown;
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});