mirror of https://github.com/twbs/bootstrap.git
432 lines
14 KiB
JavaScript
432 lines
14 KiB
JavaScript
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
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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; }; }();
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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/**
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* --------------------------------------------------------------------------
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* Bootstrap (v4.0.0-alpha.6): dropdown.js
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* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
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* --------------------------------------------------------------------------
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*/
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var Dropdown = function ($) {
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/**
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* Check for Popper dependency
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* Popper - https://popper.js.org
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*/
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if (typeof Popper === 'undefined') {
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throw new Error('Bootstrap dropdown require Popper.js (https://popper.js.org)');
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}
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/**
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* ------------------------------------------------------------------------
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* Constants
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* ------------------------------------------------------------------------
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*/
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var NAME = 'dropdown';
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var VERSION = '4.0.0-alpha.6';
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var DATA_KEY = 'bs.dropdown';
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var EVENT_KEY = '.' + DATA_KEY;
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var DATA_API_KEY = '.data-api';
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var JQUERY_NO_CONFLICT = $.fn[NAME];
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var ESCAPE_KEYCODE = 27; // KeyboardEvent.which value for Escape (Esc) key
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var SPACE_KEYCODE = 32; // KeyboardEvent.which value for space key
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var TAB_KEYCODE = 9; // KeyboardEvent.which value for tab key
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var ARROW_UP_KEYCODE = 38; // KeyboardEvent.which value for up arrow key
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var ARROW_DOWN_KEYCODE = 40; // KeyboardEvent.which value for down arrow key
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var RIGHT_MOUSE_BUTTON_WHICH = 3; // MouseEvent.which value for the right button (assuming a right-handed mouse)
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var REGEXP_KEYDOWN = new RegExp(ARROW_UP_KEYCODE + '|' + ARROW_DOWN_KEYCODE + '|' + ESCAPE_KEYCODE);
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var Event = {
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HIDE: 'hide' + EVENT_KEY,
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HIDDEN: 'hidden' + EVENT_KEY,
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SHOW: 'show' + EVENT_KEY,
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SHOWN: 'shown' + EVENT_KEY,
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CLICK: 'click' + EVENT_KEY,
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CLICK_DATA_API: 'click' + EVENT_KEY + DATA_API_KEY,
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KEYDOWN_DATA_API: 'keydown' + EVENT_KEY + DATA_API_KEY,
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KEYUP_DATA_API: 'keyup' + EVENT_KEY + DATA_API_KEY
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};
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var ClassName = {
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DISABLED: 'disabled',
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SHOW: 'show',
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DROPUP: 'dropup',
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MENURIGHT: 'dropdown-menu-right',
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MENULEFT: 'dropdown-menu-left'
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};
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var Selector = {
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DATA_TOGGLE: '[data-toggle="dropdown"]',
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FORM_CHILD: '.dropdown form',
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MENU: '.dropdown-menu',
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NAVBAR_NAV: '.navbar-nav',
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VISIBLE_ITEMS: '.dropdown-menu .dropdown-item:not(.disabled)'
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};
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var AttachmentMap = {
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TOP: 'top-start',
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TOPEND: 'top-end',
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BOTTOM: 'bottom-start',
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BOTTOMEND: 'bottom-end'
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};
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var Default = {
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placement: AttachmentMap.BOTTOM,
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offset: 0,
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flip: true
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};
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var DefaultType = {
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placement: 'string',
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offset: '(number|string)',
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flip: 'boolean'
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};
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/**
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* ------------------------------------------------------------------------
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* Class Definition
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* ------------------------------------------------------------------------
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*/
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var Dropdown = function () {
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function Dropdown(element, config) {
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_classCallCheck(this, Dropdown);
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this._element = element;
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this._popper = null;
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this._config = this._getConfig(config);
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this._menu = this._getMenuElement();
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this._inNavbar = this._detectNavbar();
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this._addEventListeners();
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}
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// getters
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// public
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Dropdown.prototype.toggle = function toggle() {
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if (this._element.disabled || $(this._element).hasClass(ClassName.DISABLED)) {
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return;
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}
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var parent = Dropdown._getParentFromElement(this._element);
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var isActive = $(this._menu).hasClass(ClassName.SHOW);
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Dropdown._clearMenus();
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if (isActive) {
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return;
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}
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var relatedTarget = {
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relatedTarget: this._element
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};
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var showEvent = $.Event(Event.SHOW, relatedTarget);
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$(parent).trigger(showEvent);
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if (showEvent.isDefaultPrevented()) {
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return;
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}
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var element = this._element;
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// for dropup with alignment we use the parent as popper container
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if ($(parent).hasClass(ClassName.DROPUP)) {
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if ($(this._menu).hasClass(ClassName.MENULEFT) || $(this._menu).hasClass(ClassName.MENURIGHT)) {
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element = parent;
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}
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}
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this._popper = new Popper(element, this._menu, this._getPopperConfig());
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// if this is a touch-enabled device we add extra
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// empty mouseover listeners to the body's immediate children;
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// only needed because of broken event delegation on iOS
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// https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html
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if ('ontouchstart' in document.documentElement && !$(parent).closest(Selector.NAVBAR_NAV).length) {
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$('body').children().on('mouseover', null, $.noop);
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}
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this._element.focus();
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this._element.setAttribute('aria-expanded', true);
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$(this._menu).toggleClass(ClassName.SHOW);
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$(parent).toggleClass(ClassName.SHOW).trigger($.Event(Event.SHOWN, relatedTarget));
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};
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Dropdown.prototype.dispose = function dispose() {
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$.removeData(this._element, DATA_KEY);
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$(this._element).off(EVENT_KEY);
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this._element = null;
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this._menu = null;
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if (this._popper !== null) {
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this._popper.destroy();
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}
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this._popper = null;
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};
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Dropdown.prototype.update = function update() {
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this._inNavbar = this._detectNavbar();
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if (this._popper !== null) {
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this._popper.scheduleUpdate();
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}
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};
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// private
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Dropdown.prototype._addEventListeners = function _addEventListeners() {
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var _this = this;
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$(this._element).on(Event.CLICK, function (event) {
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event.preventDefault();
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event.stopPropagation();
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_this.toggle();
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});
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};
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Dropdown.prototype._getConfig = function _getConfig(config) {
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var elementData = $(this._element).data();
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if (elementData.placement !== undefined) {
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elementData.placement = AttachmentMap[elementData.placement.toUpperCase()];
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}
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config = $.extend({}, this.constructor.Default, $(this._element).data(), config);
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Util.typeCheckConfig(NAME, config, this.constructor.DefaultType);
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return config;
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};
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Dropdown.prototype._getMenuElement = function _getMenuElement() {
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if (!this._menu) {
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var parent = Dropdown._getParentFromElement(this._element);
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this._menu = $(parent).find(Selector.MENU)[0];
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}
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return this._menu;
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};
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Dropdown.prototype._getPlacement = function _getPlacement() {
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var $parentDropdown = $(this._element).parent();
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var placement = this._config.placement;
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// Handle dropup
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if ($parentDropdown.hasClass(ClassName.DROPUP) || this._config.placement === AttachmentMap.TOP) {
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placement = AttachmentMap.TOP;
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if ($(this._menu).hasClass(ClassName.MENURIGHT)) {
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placement = AttachmentMap.TOPEND;
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}
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} else if ($(this._menu).hasClass(ClassName.MENURIGHT)) {
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placement = AttachmentMap.BOTTOMEND;
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}
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return placement;
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};
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Dropdown.prototype._detectNavbar = function _detectNavbar() {
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return $(this._element).closest('.navbar').length > 0;
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};
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Dropdown.prototype._getPopperConfig = function _getPopperConfig() {
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var popperConfig = {
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placement: this._getPlacement(),
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modifiers: {
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offset: {
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offset: this._config.offset
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},
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flip: {
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enabled: this._config.flip
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}
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}
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};
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// Disable Popper.js for Dropdown in Navbar
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if (this._inNavbar) {
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popperConfig.modifiers.applyStyle = {
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enabled: !this._inNavbar
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};
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}
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return popperConfig;
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};
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// static
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Dropdown._jQueryInterface = function _jQueryInterface(config) {
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return this.each(function () {
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var data = $(this).data(DATA_KEY);
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var _config = (typeof config === 'undefined' ? 'undefined' : _typeof(config)) === 'object' ? config : null;
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if (!data) {
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data = new Dropdown(this, _config);
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$(this).data(DATA_KEY, data);
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}
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if (typeof config === 'string') {
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if (data[config] === undefined) {
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throw new Error('No method named "' + config + '"');
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}
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data[config]();
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}
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});
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};
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Dropdown._clearMenus = function _clearMenus(event) {
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if (event && (event.which === RIGHT_MOUSE_BUTTON_WHICH || event.type === 'keyup' && event.which !== TAB_KEYCODE)) {
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return;
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}
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var toggles = $.makeArray($(Selector.DATA_TOGGLE));
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for (var i = 0; i < toggles.length; i++) {
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var parent = Dropdown._getParentFromElement(toggles[i]);
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var context = $(toggles[i]).data(DATA_KEY);
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var relatedTarget = {
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relatedTarget: toggles[i]
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};
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if (!context) {
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continue;
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}
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var dropdownMenu = context._menu;
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if (!$(parent).hasClass(ClassName.SHOW)) {
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continue;
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}
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if (event && (event.type === 'click' && /input|textarea/i.test(event.target.tagName) || event.type === 'keyup' && event.which === TAB_KEYCODE) && $.contains(parent, event.target)) {
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continue;
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}
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var hideEvent = $.Event(Event.HIDE, relatedTarget);
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$(parent).trigger(hideEvent);
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if (hideEvent.isDefaultPrevented()) {
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continue;
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}
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// if this is a touch-enabled device we remove the extra
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// empty mouseover listeners we added for iOS support
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if ('ontouchstart' in document.documentElement) {
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$('body').children().off('mouseover', null, $.noop);
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}
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toggles[i].setAttribute('aria-expanded', 'false');
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$(dropdownMenu).removeClass(ClassName.SHOW);
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$(parent).removeClass(ClassName.SHOW).trigger($.Event(Event.HIDDEN, relatedTarget));
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}
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};
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Dropdown._getParentFromElement = function _getParentFromElement(element) {
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var parent = void 0;
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var selector = Util.getSelectorFromElement(element);
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if (selector) {
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parent = $(selector)[0];
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}
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return parent || element.parentNode;
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};
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Dropdown._dataApiKeydownHandler = function _dataApiKeydownHandler(event) {
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if (!REGEXP_KEYDOWN.test(event.which) || /button/i.test(event.target.tagName) && event.which === SPACE_KEYCODE || /input|textarea/i.test(event.target.tagName)) {
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return;
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}
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event.preventDefault();
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event.stopPropagation();
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if (this.disabled || $(this).hasClass(ClassName.DISABLED)) {
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return;
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}
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var parent = Dropdown._getParentFromElement(this);
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var isActive = $(parent).hasClass(ClassName.SHOW);
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if (!isActive && (event.which !== ESCAPE_KEYCODE || event.which !== SPACE_KEYCODE) || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
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if (event.which === ESCAPE_KEYCODE) {
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var toggle = $(parent).find(Selector.DATA_TOGGLE)[0];
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$(toggle).trigger('focus');
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}
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$(this).trigger('click');
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return;
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}
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var items = $(parent).find(Selector.VISIBLE_ITEMS).get();
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if (!items.length) {
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return;
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}
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var index = items.indexOf(event.target);
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if (event.which === ARROW_UP_KEYCODE && index > 0) {
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// up
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index--;
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}
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if (event.which === ARROW_DOWN_KEYCODE && index < items.length - 1) {
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// down
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index++;
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}
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if (index < 0) {
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index = 0;
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}
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items[index].focus();
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};
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_createClass(Dropdown, null, [{
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key: 'VERSION',
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get: function get() {
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return VERSION;
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}
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}, {
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key: 'Default',
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get: function get() {
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return Default;
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}
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}, {
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key: 'DefaultType',
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get: function get() {
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return DefaultType;
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}
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}]);
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return Dropdown;
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}();
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/**
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* ------------------------------------------------------------------------
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* Data Api implementation
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* ------------------------------------------------------------------------
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*/
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$(document).on(Event.KEYDOWN_DATA_API, Selector.DATA_TOGGLE, Dropdown._dataApiKeydownHandler).on(Event.KEYDOWN_DATA_API, Selector.MENU, Dropdown._dataApiKeydownHandler).on(Event.CLICK_DATA_API + ' ' + Event.KEYUP_DATA_API, Dropdown._clearMenus).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
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event.preventDefault();
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event.stopPropagation();
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Dropdown._jQueryInterface.call($(this), 'toggle');
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}).on(Event.CLICK_DATA_API, Selector.FORM_CHILD, function (e) {
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e.stopPropagation();
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});
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/**
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* ------------------------------------------------------------------------
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* jQuery
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* ------------------------------------------------------------------------
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*/
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$.fn[NAME] = Dropdown._jQueryInterface;
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$.fn[NAME].Constructor = Dropdown;
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$.fn[NAME].noConflict = function () {
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$.fn[NAME] = JQUERY_NO_CONFLICT;
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return Dropdown._jQueryInterface;
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};
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return Dropdown;
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}(jQuery); /* global Popper */
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//# sourceMappingURL=dropdown.js.map
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