Acme.BookStore.HttpApi.Host/node_modules/bootstrap-v4-rtl/js/src/dropdown.js

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/**
 * --------------------------------------------------------------------------
 * Bootstrap (v4.6.0): dropdown.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
 * --------------------------------------------------------------------------
 */

import $ from 'jquery'
import Popper from 'popper.js'
import Util from './util'

/**
 * ------------------------------------------------------------------------
 * Constants
 * ------------------------------------------------------------------------
 */

const NAME = 'dropdown'
const VERSION = '4.6.0'
const DATA_KEY = 'bs.dropdown'
const EVENT_KEY = `.${DATA_KEY}`
const DATA_API_KEY = '.data-api'
const JQUERY_NO_CONFLICT = $.fn[NAME]
const ESCAPE_KEYCODE = 27 // KeyboardEvent.which value for Escape (Esc) key
const SPACE_KEYCODE = 32 // KeyboardEvent.which value for space key
const TAB_KEYCODE = 9 // KeyboardEvent.which value for tab key
const ARROW_UP_KEYCODE = 38 // KeyboardEvent.which value for up arrow key
const ARROW_DOWN_KEYCODE = 40 // KeyboardEvent.which value for down arrow key
const RIGHT_MOUSE_BUTTON_WHICH = 3 // MouseEvent.which value for the right button (assuming a right-handed mouse)
const REGEXP_KEYDOWN = new RegExp(`${ARROW_UP_KEYCODE}|${ARROW_DOWN_KEYCODE}|${ESCAPE_KEYCODE}`)

const EVENT_HIDE = `hide${EVENT_KEY}`
const EVENT_HIDDEN = `hidden${EVENT_KEY}`
const EVENT_SHOW = `show${EVENT_KEY}`
const EVENT_SHOWN = `shown${EVENT_KEY}`
const EVENT_CLICK = `click${EVENT_KEY}`
const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}`
const EVENT_KEYDOWN_DATA_API = `keydown${EVENT_KEY}${DATA_API_KEY}`
const EVENT_KEYUP_DATA_API = `keyup${EVENT_KEY}${DATA_API_KEY}`

const CLASS_NAME_DISABLED = 'disabled'
const CLASS_NAME_SHOW = 'show'
const CLASS_NAME_DROPUP = 'dropup'
const CLASS_NAME_DROPRIGHT = 'dropright'
const CLASS_NAME_DROPLEFT = 'dropleft'
const CLASS_NAME_MENURIGHT = 'dropdown-menu-right'
const CLASS_NAME_POSITION_STATIC = 'position-static'

const SELECTOR_DATA_TOGGLE = '[data-toggle="dropdown"]'
const SELECTOR_FORM_CHILD = '.dropdown form'
const SELECTOR_MENU = '.dropdown-menu'
const SELECTOR_NAVBAR_NAV = '.navbar-nav'
const SELECTOR_VISIBLE_ITEMS = '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)'

const PLACEMENT_TOP = 'top-start'
const PLACEMENT_TOPEND = 'top-end'
const PLACEMENT_BOTTOM = 'bottom-start'
const PLACEMENT_BOTTOMEND = 'bottom-end'
const PLACEMENT_RIGHT = 'right-start'
const PLACEMENT_LEFT = 'left-start'