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Mark Otto authored24e992a6
'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 _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }/** * -------------------------------------------------------------------------- * Bootstrap (v4.0.0-alpha.3): dropdown.js * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) * -------------------------------------------------------------------------- */var Dropdown = (function ($) { /** * ------------------------------------------------------------------------ * Constants * ------------------------------------------------------------------------ */ var NAME = 'dropdown'; var VERSION = '4.0.0-alpha.3'; var DATA_KEY = 'bs.dropdown'; var EVENT_KEY = '.' + DATA_KEY; var DATA_API_KEY = '.data-api'; var JQUERY_NO_CONFLICT = $.fn[NAME]; var ESCAPE_KEYCODE = 27; // KeyboardEvent.which value for Escape (Esc) key var ARROW_UP_KEYCODE = 38; // KeyboardEvent.which value for up arrow key var ARROW_DOWN_KEYCODE = 40; // KeyboardEvent.which value for down arrow key var RIGHT_MOUSE_BUTTON_WHICH = 3; // MouseEvent.which value for the right button (assuming a right-handed mouse) var Event = { HIDE: 'hide' + EVENT_KEY, HIDDEN: 'hidden' + EVENT_KEY, SHOW: 'show' + EVENT_KEY, SHOWN: 'shown' + EVENT_KEY, CLICK: 'click' + EVENT_KEY, CLICK_DATA_API: 'click' + EVENT_KEY + DATA_API_KEY, KEYDOWN_DATA_API: 'keydown' + EVENT_KEY + DATA_API_KEY }; 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); this._element = element;7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
this._addEventListeners();
}
/**
* ------------------------------------------------------------------------
* Data Api implementation
* ------------------------------------------------------------------------
*/
// getters
_createClass(Dropdown, [{
key: 'toggle',
// public
value: function toggle() {
if (this.disabled || $(this).hasClass(ClassName.DISABLED)) {
return false;
}
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()) {
return false;
}
this.focus();
this.setAttribute('aria-expanded', 'true');
$(parent).toggleClass(ClassName.OPEN);
$(parent).trigger($.Event(Event.SHOWN, relatedTarget));
return false;
}
}, {
key: 'dispose',
value: function dispose() {
$.removeData(this._element, DATA_KEY);
$(this._element).off(EVENT_KEY);
this._element = null;
}
// private
}, {
key: '_addEventListeners',
value: function _addEventListeners() {
$(this._element).on(Event.CLICK, this.toggle);
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}
// static
}], [{
key: '_jQueryInterface',
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') {
if (data[config] === undefined) {
throw new Error('No method named "' + config + '"');
}
data[config].call(this);
}
});
}
}, {
key: '_clearMenus',
value: function _clearMenus(event) {
if (event && event.which === RIGHT_MOUSE_BUTTON_WHICH) {
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');
$(_parent).removeClass(ClassName.OPEN).trigger($.Event(Event.HIDDEN, relatedTarget));
}
}
}, {
key: '_getParentFromElement',
value: function _getParentFromElement(element) {
var parent = undefined;
var selector = Util.getSelectorFromElement(element);
if (selector) {
parent = $(selector)[0];
}
return parent || element.parentNode;
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}
}, {
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 !== ESCAPE_KEYCODE || isActive && event.which === ESCAPE_KEYCODE) {
if (event.which === ESCAPE_KEYCODE) {
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);
if (event.which === ARROW_UP_KEYCODE && index > 0) {
// up
index--;
}
if (event.which === ARROW_DOWN_KEYCODE && index < items.length - 1) {
// down
index++;
}
if (index < 0) {
index = 0;
}
items[index].focus();
}
}, {
key: 'VERSION',
get: function get() {
return VERSION;
}
}]);
return Dropdown;
})();
$(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) {
e.stopPropagation();
});
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/**
* ------------------------------------------------------------------------
* jQuery
* ------------------------------------------------------------------------
*/
$.fn[NAME] = Dropdown._jQueryInterface;
$.fn[NAME].Constructor = Dropdown;
$.fn[NAME].noConflict = function () {
$.fn[NAME] = JQUERY_NO_CONFLICT;
return Dropdown._jQueryInterface;
};
return Dropdown;
})(jQuery);
//# sourceMappingURL=dropdown.js.map