Bootstrap/js/dist/modal.js

/*!
  * Bootstrap modal.js v5.3.0-alpha1 (https://getbootstrap.com/)
  * Copyright 2011-2022 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
  */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('./util/index.js'), require('./dom/event-handler.js'), require('./dom/selector-engine.js'), require('./util/scrollbar.js'), require('./base-component.js'), require('./util/backdrop.js'), require('./util/focustrap.js'), require('./util/component-functions.js')) :
  typeof define === 'function' && define.amd ? define(['./util/index', './dom/event-handler', './dom/selector-engine', './util/scrollbar', './base-component', './util/backdrop', './util/focustrap', './util/component-functions'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.Modal = factory(global.Index, global.EventHandler, global.SelectorEngine, global.Scrollbar, global.BaseComponent, global.Backdrop, global.Focustrap, global.ComponentFunctions));
})(this, (function (index_js, EventHandler, SelectorEngine, ScrollBarHelper, BaseComponent, Backdrop, FocusTrap, componentFunctions_js) { 'use strict';

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.3.0-alpha1): modal.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   * --------------------------------------------------------------------------
   */

  /**
   * Constants
   */

  const NAME = 'modal';
  const DATA_KEY = 'bs.modal';
  const EVENT_KEY = `.${DATA_KEY}`;
  const DATA_API_KEY = '.data-api';
  const ESCAPE_KEY = 'Escape';
  const EVENT_HIDE = `hide${EVENT_KEY}`;
  const EVENT_HIDE_PREVENTED = `hidePrevented${EVENT_KEY}`;
  const EVENT_HIDDEN = `hidden${EVENT_KEY}`;
  const EVENT_SHOW = `show${EVENT_KEY}`;
  const EVENT_SHOWN = `shown${EVENT_KEY}`;
  const EVENT_RESIZE = `resize${EVENT_KEY}`;
  const EVENT_CLICK_DISMISS = `click.dismiss${EVENT_KEY}`;
  const EVENT_MOUSEDOWN_DISMISS = `mousedown.dismiss${EVENT_KEY}`;
  const EVENT_KEYDOWN_DISMISS = `keydown.dismiss${EVENT_KEY}`;
  const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}`;
  const CLASS_NAME_OPEN = 'modal-open';
  const CLASS_NAME_FADE = 'fade';
  const CLASS_NAME_SHOW = 'show';
  const CLASS_NAME_STATIC = 'modal-static';
  const OPEN_SELECTOR = '.modal.show';
  const SELECTOR_DIALOG = '.modal-dialog';
  const SELECTOR_MODAL_BODY = '.modal-body';
  const SELECTOR_DATA_TOGGLE = '[data-bs-toggle="modal"]';
  const Default = {
    backdrop: true,
    focus: true,
    keyboard: true
  };
  const DefaultType = {
    backdrop: '(boolean|string)',
    focus: 'boolean',
    keyboard: 'boolean'
  };

  /**
   * Class definition
   */

  class Modal extends BaseComponent {
    constructor(element, config) {
      super(element, config);
      this._dialog = SelectorEngine.findOne(SELECTOR_DIALOG, this._element);
      this._backdrop = this._initializeBackDrop();
      this._focustrap = this._initializeFocusTrap();
      this._isShown = false;
      this._isTransitioning = false;
      this._scrollBar = new ScrollBarHelper();
      this._addEventListeners();
    }

    // Getters
    static get Default() {
      return Default;
    }
    static get DefaultType() {
      return DefaultType;
    }
    static get NAME() {
      return NAME;
    }

    // Public
    toggle(relatedTarget) {
      return this._isShown ? this.hide() : this.show(relatedTarget);
    }
    show(relatedTarget) {
      if (this._isShown || this._isTransitioning) {
        return;
      }
      const showEvent = EventHandler.trigger(this._element, EVENT_SHOW, {
        relatedTarget
      });
      if (showEvent.defaultPrevented) {
        return;
      }
      this._isShown = true;
      this._isTransitioning = true;
      this._scrollBar.hide();
      document.body.classList.add(CLASS_NAME_OPEN);
      this._adjustDialog();
      this._backdrop.show(() => this._showElement(relatedTarget));
    }
    hide() {
      if (!this._isShown || this._isTransitioning) {
        return;
      }
      const hideEvent = EventHandler.trigger(this._element, EVENT_HIDE);
      if (hideEvent.defaultPrevented) {
        return;
      }
      this._isShown = false;
      this._isTransitioning = true;
      this._focustrap.deactivate();
      this._element.classList.remove(CLASS_NAME_SHOW);
      this._queueCallback(() => this._hideModal(), this._element, this._isAnimated());
    }
    dispose() {
      for (const htmlElement of [window, this._dialog]) {
        EventHandler.off(htmlElement, EVENT_KEY);
      }
      this._backdrop.dispose();
      this._focustrap.deactivate();
      super.dispose();
    }
    handleUpdate() {
      this._adjustDialog();
    }

    // Private
    _initializeBackDrop() {
      return new Backdrop({
        isVisible: Boolean(this._config.backdrop),
        // 'static' option will be translated to true, and booleans will keep their value,
        isAnimated: this._isAnimated()
      });
    }
    _initializeFocusTrap() {
      return new FocusTrap({
        trapElement: this._element
      });
    }
    _showElement(relatedTarget) {
      // try to append dynamic modal
      if (!document.body.contains(this._element)) {
        document.body.append(this._element);
      }
      this._element.style.display = 'block';
      this._element.removeAttribute('aria-hidden');
      this._element.setAttribute('aria-modal', true);
      this._element.setAttribute('role', 'dialog');
      this._element.scrollTop = 0;
      const modalBody = SelectorEngine.findOne(SELECTOR_MODAL_BODY, this._dialog);
      if (modalBody) {
        modalBody.scrollTop = 0;
      }
      index_js.reflow(this._element);
      this._element.classList.add(CLASS_NAME_SHOW);
      const transitionComplete = () => {
        if (this._config.focus) {
          this._focustrap.activate();
        }
        this._isTransitioning = false;
        EventHandler.trigger(this._element, EVENT_SHOWN, {
          relatedTarget
        });
      };
      this._queueCallback(transitionComplete, this._dialog, this._isAnimated());
    }
    _addEventListeners() {
      EventHandler.on(this._element, EVENT_KEYDOWN_DISMISS, event => {
        if (event.key !== ESCAPE_KEY) {
          return;
        }
        if (this._config.keyboard) {
          event.preventDefault();
          this.hide();
          return;
        }
        this._triggerBackdropTransition();
      });
      EventHandler.on(window, EVENT_RESIZE, () => {
        if (this._isShown && !this._isTransitioning) {
          this._adjustDialog();
        }
      });
      EventHandler.on(this._element, EVENT_MOUSEDOWN_DISMISS, event => {
        // a bad trick to segregate clicks that may start inside dialog but end outside, and avoid listen to scrollbar clicks
        EventHandler.one(this._element, EVENT_CLICK_DISMISS, event2 => {
          if (this._element !== event.target || this._element !== event2.target) {
            return;
          }
          if (this._config.backdrop === 'static') {
            this._triggerBackdropTransition();
            return;
          }
          if (this._config.backdrop) {
            this.hide();
          }
        });
      });
    }
    _hideModal() {
      this._element.style.display = 'none';
      this._element.setAttribute('aria-hidden', true);
      this._element.removeAttribute('aria-modal');
      this._element.removeAttribute('role');
      this._isTransitioning = false;
      this._backdrop.hide(() => {
        document.body.classList.remove(CLASS_NAME_OPEN);
        this._resetAdjustments();
        this._scrollBar.reset();
        EventHandler.trigger(this._element, EVENT_HIDDEN);
      });
    }
    _isAnimated() {
      return this._element.classList.contains(CLASS_NAME_FADE);
    }
    _triggerBackdropTransition() {
      const hideEvent = EventHandler.trigger(this._element, EVENT_HIDE_PREVENTED);
      if (hideEvent.defaultPrevented) {
        return;
      }
      const isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight;
      const initialOverflowY = this._element.style.overflowY;
      // return if the following background transition hasn't yet completed
      if (initialOverflowY === 'hidden' || this._element.classList.contains(CLASS_NAME_STATIC)) {
        return;
      }
      if (!isModalOverflowing) {
        this._element.style.overflowY = 'hidden';
      }
      this._element.classList.add(CLASS_NAME_STATIC);
      this._queueCallback(() => {
        this._element.classList.remove(CLASS_NAME_STATIC);
        this._queueCallback(() => {
          this._element.style.overflowY = initialOverflowY;
        }, this._dialog);
      }, this._dialog);
      this._element.focus();
    }

    /**
     * The following methods are used to handle overflowing modals
     */

    _adjustDialog() {
      const isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight;
      const scrollbarWidth = this._scrollBar.getWidth();
      const isBodyOverflowing = scrollbarWidth > 0;
      if (isBodyOverflowing && !isModalOverflowing) {
        const property = index_js.isRTL() ? 'paddingLeft' : 'paddingRight';
        this._element.style[property] = `${scrollbarWidth}px`;
      }
      if (!isBodyOverflowing && isModalOverflowing) {
        const property = index_js.isRTL() ? 'paddingRight' : 'paddingLeft';
        this._element.style[property] = `${scrollbarWidth}px`;
      }
    }
    _resetAdjustments() {
      this._element.style.paddingLeft = '';
      this._element.style.paddingRight = '';
    }

    // Static
    static jQueryInterface(config, relatedTarget) {
      return this.each(function () {
        const data = Modal.getOrCreateInstance(this, config);
        if (typeof config !== 'string') {
          return;
        }
        if (typeof data[config] === 'undefined') {
          throw new TypeError(`No method named "${config}"`);
        }
        data[config](relatedTarget);
      });
    }
  }

  /**
   * Data API implementation
   */

  EventHandler.on(document, EVENT_CLICK_DATA_API, SELECTOR_DATA_TOGGLE, function (event) {
    const target = SelectorEngine.getElementFromSelector(this);
    if (['A', 'AREA'].includes(this.tagName)) {
      event.preventDefault();
    }
    EventHandler.one(target, EVENT_SHOW, showEvent => {
      if (showEvent.defaultPrevented) {
        // only register focus restorer if modal will actually get shown
        return;
      }
      EventHandler.one(target, EVENT_HIDDEN, () => {
        if (index_js.isVisible(this)) {
          this.focus();
        }
      });
    });

    // avoid conflict when clicking modal toggler while another one is open
    const alreadyOpen = SelectorEngine.findOne(OPEN_SELECTOR);
    if (alreadyOpen) {
      Modal.getInstance(alreadyOpen).hide();
    }
    const data = Modal.getOrCreateInstance(target);
    data.toggle(this);
  });
  componentFunctions_js.enableDismissTrigger(Modal);

  /**
   * jQuery
   */

  index_js.defineJQueryPlugin(Modal);

  return Modal;

}));
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