| /** |
| * -------------------------------------------------------------------------- |
| * Bootstrap (v5.2.1): util/backdrop.js |
| * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) |
| * -------------------------------------------------------------------------- |
| */ |
| |
| import EventHandler from '../dom/event-handler' |
| import { execute, executeAfterTransition, getElement, reflow } from './index' |
| import Config from './config' |
| |
| /** |
| * Constants |
| */ |
| |
| const NAME = 'backdrop' |
| const CLASS_NAME_FADE = 'fade' |
| const CLASS_NAME_SHOW = 'show' |
| const EVENT_MOUSEDOWN = `mousedown.bs.${NAME}` |
| |
| const Default = { |
| className: 'modal-backdrop', |
| clickCallback: null, |
| isAnimated: false, |
| isVisible: true, // if false, we use the backdrop helper without adding any element to the dom |
| rootElement: 'body' // give the choice to place backdrop under different elements |
| } |
| |
| const DefaultType = { |
| className: 'string', |
| clickCallback: '(function|null)', |
| isAnimated: 'boolean', |
| isVisible: 'boolean', |
| rootElement: '(element|string)' |
| } |
| |
| /** |
| * Class definition |
| */ |
| |
| class Backdrop extends Config { |
| constructor(config) { |
| super() |
| this._config = this._getConfig(config) |
| this._isAppended = false |
| this._element = null |
| } |
| |
| // Getters |
| static get Default() { |
| return Default |
| } |
| |
| static get DefaultType() { |
| return DefaultType |
| } |
| |
| static get NAME() { |
| return NAME |
| } |
| |
| // Public |
| show(callback) { |
| if (!this._config.isVisible) { |
| execute(callback) |
| return |
| } |
| |
| this._append() |
| |
| const element = this._getElement() |
| if (this._config.isAnimated) { |
| reflow(element) |
| } |
| |
| element.classList.add(CLASS_NAME_SHOW) |
| |
| this._emulateAnimation(() => { |
| execute(callback) |
| }) |
| } |
| |
| hide(callback) { |
| if (!this._config.isVisible) { |
| execute(callback) |
| return |
| } |
| |
| this._getElement().classList.remove(CLASS_NAME_SHOW) |
| |
| this._emulateAnimation(() => { |
| this.dispose() |
| execute(callback) |
| }) |
| } |
| |
| dispose() { |
| if (!this._isAppended) { |
| return |
| } |
| |
| EventHandler.off(this._element, EVENT_MOUSEDOWN) |
| |
| this._element.remove() |
| this._isAppended = false |
| } |
| |
| // Private |
| _getElement() { |
| if (!this._element) { |
| const backdrop = document.createElement('div') |
| backdrop.className = this._config.className |
| if (this._config.isAnimated) { |
| backdrop.classList.add(CLASS_NAME_FADE) |
| } |
| |
| this._element = backdrop |
| } |
| |
| return this._element |
| } |
| |
| _configAfterMerge(config) { |
| // use getElement() with the default "body" to get a fresh Element on each instantiation |
| config.rootElement = getElement(config.rootElement) |
| return config |
| } |
| |
| _append() { |
| if (this._isAppended) { |
| return |
| } |
| |
| const element = this._getElement() |
| this._config.rootElement.append(element) |
| |
| EventHandler.on(element, EVENT_MOUSEDOWN, () => { |
| execute(this._config.clickCallback) |
| }) |
| |
| this._isAppended = true |
| } |
| |
| _emulateAnimation(callback) { |
| executeAfterTransition(callback, this._getElement(), this._config.isAnimated) |
| } |
| } |
| |
| export default Backdrop |