githubmirror/bootstrap

js/dist/offcanvas.js
867 строк25 KB
XhmikosR
Prepare v5.1.0. (#34674)
04 авг 2021, 18:41
04 авг 2021, 18:41f20fece
/*!
  * Bootstrap offcanvas.js v5.1.0 (https://getbootstrap.com/)
  * Copyright 2011-2021 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('./dom/selector-engine.js'), require('./dom/manipulator.js'), require('./dom/event-handler.js'), require('./base-component.js')) :
  typeof define === 'function' && define.amd ? define(['./dom/selector-engine', './dom/manipulator', './dom/event-handler', './base-component'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.Offcanvas = factory(global.SelectorEngine, global.Manipulator, global.EventHandler, global.Base));
}(this, (function (SelectorEngine, Manipulator, EventHandler, BaseComponent) { 'use strict';

  function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

  var SelectorEngine__default = /*#__PURE__*/_interopDefaultLegacy(SelectorEngine);
  var Manipulator__default = /*#__PURE__*/_interopDefaultLegacy(Manipulator);
  var EventHandler__default = /*#__PURE__*/_interopDefaultLegacy(EventHandler);
  var BaseComponent__default = /*#__PURE__*/_interopDefaultLegacy(BaseComponent);

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.1.0): util/index.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   * --------------------------------------------------------------------------
   */
  const MILLISECONDS_MULTIPLIER = 1000;
  const TRANSITION_END = 'transitionend'; // Shoutout AngusCroll (https://goo.gl/pxwQGp)

  const toType = obj => {
    if (obj === null || obj === undefined) {
      return `${obj}`;
    }

    return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase();
  };

  const getSelector = element => {
    let selector = element.getAttribute('data-bs-target');

    if (!selector || selector === '#') {
      let hrefAttr = element.getAttribute('href'); // The only valid content that could double as a selector are IDs or classes,
      // so everything starting with `#` or `.`. If a "real" URL is used as the selector,
      // `document.querySelector` will rightfully complain it is invalid.
      // See https://github.com/twbs/bootstrap/issues/32273

      if (!hrefAttr || !hrefAttr.includes('#') && !hrefAttr.startsWith('.')) {
        return null;
      } // Just in case some CMS puts out a full URL with the anchor appended


      if (hrefAttr.includes('#') && !hrefAttr.startsWith('#')) {
        hrefAttr = `#${hrefAttr.split('#')[1]}`;
      }

      selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : null;
    }

    return selector;
  };

  const getElementFromSelector = element => {
    const selector = getSelector(element);
    return selector ? document.querySelector(selector) : null;
  };

  const getTransitionDurationFromElement = element => {
    if (!element) {
      return 0;
    } // Get transition-duration of the element


    let {
      transitionDuration,
      transitionDelay
    } = window.getComputedStyle(element);
    const floatTransitionDuration = Number.parseFloat(transitionDuration);
    const floatTransitionDelay = Number.parseFloat(transitionDelay); // Return 0 if element or transition duration is not found

    if (!floatTransitionDuration && !floatTransitionDelay) {
      return 0;
    } // If multiple durations are defined, take the first


    transitionDuration = transitionDuration.split(',')[0];
    transitionDelay = transitionDelay.split(',')[0];
    return (Number.parseFloat(transitionDuration) + Number.parseFloat(transitionDelay)) * MILLISECONDS_MULTIPLIER;
  };

  const triggerTransitionEnd = element => {
    element.dispatchEvent(new Event(TRANSITION_END));
  };

  const isElement = obj => {
    if (!obj || typeof obj !== 'object') {
      return false;
    }

    if (typeof obj.jquery !== 'undefined') {
      obj = obj[0];
    }

    return typeof obj.nodeType !== 'undefined';
  };

  const getElement = obj => {
    if (isElement(obj)) {
      // it's a jQuery object or a node element
      return obj.jquery ? obj[0] : obj;
    }

    if (typeof obj === 'string' && obj.length > 0) {
      return document.querySelector(obj);
    }

    return null;
  };

  const typeCheckConfig = (componentName, config, configTypes) => {
    Object.keys(configTypes).forEach(property => {
      const expectedTypes = configTypes[property];
      const value = config[property];
      const valueType = value && isElement(value) ? 'element' : toType(value);

      if (!new RegExp(expectedTypes).test(valueType)) {
        throw new TypeError(`${componentName.toUpperCase()}: Option "${property}" provided type "${valueType}" but expected type "${expectedTypes}".`);
      }
    });
  };

  const isVisible = element => {
    if (!isElement(element) || element.getClientRects().length === 0) {
      return false;
    }

    return getComputedStyle(element).getPropertyValue('visibility') === 'visible';
  };

  const isDisabled = element => {
    if (!element || element.nodeType !== Node.ELEMENT_NODE) {
      return true;
    }

    if (element.classList.contains('disabled')) {
      return true;
    }

    if (typeof element.disabled !== 'undefined') {
      return element.disabled;
    }

    return element.hasAttribute('disabled') && element.getAttribute('disabled') !== 'false';
  };
  /**
   * Trick to restart an element's animation
   *
   * @param {HTMLElement} element
   * @return void
   *
   * @see https://www.charistheo.io/blog/2021/02/restart-a-css-animation-with-javascript/#restarting-a-css-animation
   */


  const reflow = element => {
    // eslint-disable-next-line no-unused-expressions
    element.offsetHeight;
  };

  const getjQuery = () => {
    const {
      jQuery
    } = window;

    if (jQuery && !document.body.hasAttribute('data-bs-no-jquery')) {
      return jQuery;
    }

    return null;
  };

  const DOMContentLoadedCallbacks = [];

  const onDOMContentLoaded = callback => {
    if (document.readyState === 'loading') {
      // add listener on the first call when the document is in loading state
      if (!DOMContentLoadedCallbacks.length) {
        document.addEventListener('DOMContentLoaded', () => {
          DOMContentLoadedCallbacks.forEach(callback => callback());
        });
      }

      DOMContentLoadedCallbacks.push(callback);
    } else {
      callback();
    }
  };

  const defineJQueryPlugin = plugin => {
    onDOMContentLoaded(() => {
      const $ = getjQuery();
      /* istanbul ignore if */

      if ($) {
        const name = plugin.NAME;
        const JQUERY_NO_CONFLICT = $.fn[name];
        $.fn[name] = plugin.jQueryInterface;
        $.fn[name].Constructor = plugin;

        $.fn[name].noConflict = () => {
          $.fn[name] = JQUERY_NO_CONFLICT;
          return plugin.jQueryInterface;
        };
      }
    });
  };

  const execute = callback => {
    if (typeof callback === 'function') {
      callback();
    }
  };

  const executeAfterTransition = (callback, transitionElement, waitForTransition = true) => {
    if (!waitForTransition) {
      execute(callback);
      return;
    }

    const durationPadding = 5;
    const emulatedDuration = getTransitionDurationFromElement(transitionElement) + durationPadding;
    let called = false;

    const handler = ({
      target
    }) => {
      if (target !== transitionElement) {
        return;
      }

      called = true;
      transitionElement.removeEventListener(TRANSITION_END, handler);
      execute(callback);
    };

    transitionElement.addEventListener(TRANSITION_END, handler);
    setTimeout(() => {
      if (!called) {
        triggerTransitionEnd(transitionElement);
      }
    }, emulatedDuration);
  };

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.1.0): util/scrollBar.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   * --------------------------------------------------------------------------
   */
  const SELECTOR_FIXED_CONTENT = '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top';
  const SELECTOR_STICKY_CONTENT = '.sticky-top';

  class ScrollBarHelper {
    constructor() {
      this._element = document.body;
    }

    getWidth() {
      // https://developer.mozilla.org/en-US/docs/Web/API/Window/innerWidth#usage_notes
      const documentWidth = document.documentElement.clientWidth;
      return Math.abs(window.innerWidth - documentWidth);
    }

    hide() {
      const width = this.getWidth();

      this._disableOverFlow(); // give padding to element to balance the hidden scrollbar width


      this._setElementAttributes(this._element, 'paddingRight', calculatedValue => calculatedValue + width); // trick: We adjust positive paddingRight and negative marginRight to sticky-top elements to keep showing fullwidth


      this._setElementAttributes(SELECTOR_FIXED_CONTENT, 'paddingRight', calculatedValue => calculatedValue + width);

      this._setElementAttributes(SELECTOR_STICKY_CONTENT, 'marginRight', calculatedValue => calculatedValue - width);
    }

    _disableOverFlow() {
      this._saveInitialAttribute(this._element, 'overflow');

      this._element.style.overflow = 'hidden';
    }

    _setElementAttributes(selector, styleProp, callback) {
      const scrollbarWidth = this.getWidth();

      const manipulationCallBack = element => {
        if (element !== this._element && window.innerWidth > element.clientWidth + scrollbarWidth) {
          return;
        }

        this._saveInitialAttribute(element, styleProp);

        const calculatedValue = window.getComputedStyle(element)[styleProp];
        element.style[styleProp] = `${callback(Number.parseFloat(calculatedValue))}px`;
      };

      this._applyManipulationCallback(selector, manipulationCallBack);
    }

    reset() {
      this._resetElementAttributes(this._element, 'overflow');

      this._resetElementAttributes(this._element, 'paddingRight');

      this._resetElementAttributes(SELECTOR_FIXED_CONTENT, 'paddingRight');

      this._resetElementAttributes(SELECTOR_STICKY_CONTENT, 'marginRight');
    }

    _saveInitialAttribute(element, styleProp) {
      const actualValue = element.style[styleProp];

      if (actualValue) {
        Manipulator__default['default'].setDataAttribute(element, styleProp, actualValue);
      }
    }

    _resetElementAttributes(selector, styleProp) {
      const manipulationCallBack = element => {
        const value = Manipulator__default['default'].getDataAttribute(element, styleProp);

        if (typeof value === 'undefined') {
          element.style.removeProperty(styleProp);
        } else {
          Manipulator__default['default'].removeDataAttribute(element, styleProp);
          element.style[styleProp] = value;
        }
      };

      this._applyManipulationCallback(selector, manipulationCallBack);
    }

    _applyManipulationCallback(selector, callBack) {
      if (isElement(selector)) {
        callBack(selector);
      } else {
        SelectorEngine__default['default'].find(selector, this._element).forEach(callBack);
      }
    }

    isOverflowing() {
      return this.getWidth() > 0;
    }

  }

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.1.0): util/backdrop.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
  const Default$2 = {
    className: 'modal-backdrop',
    isVisible: true,
    // if false, we use the backdrop helper without adding any element to the dom
    isAnimated: false,
    rootElement: 'body',
    // give the choice to place backdrop under different elements
    clickCallback: null
  };
  const DefaultType$2 = {
    className: 'string',
    isVisible: 'boolean',
    isAnimated: 'boolean',
    rootElement: '(element|string)',
    clickCallback: '(function|null)'
  };
  const NAME$2 = 'backdrop';
  const CLASS_NAME_FADE = 'fade';
  const CLASS_NAME_SHOW$1 = 'show';
  const EVENT_MOUSEDOWN = `mousedown.bs.${NAME$2}`;

  class Backdrop {
    constructor(config) {
      this._config = this._getConfig(config);
      this._isAppended = false;
      this._element = null;
    }

    show(callback) {
      if (!this._config.isVisible) {
        execute(callback);
        return;
      }

      this._append();

      if (this._config.isAnimated) {
        reflow(this._getElement());
      }

      this._getElement().classList.add(CLASS_NAME_SHOW$1);

      this._emulateAnimation(() => {
        execute(callback);
      });
    }

    hide(callback) {
      if (!this._config.isVisible) {
        execute(callback);
        return;
      }

      this._getElement().classList.remove(CLASS_NAME_SHOW$1);

      this._emulateAnimation(() => {
        this.dispose();
        execute(callback);
      });
    } // 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;
    }

    _getConfig(config) {
      config = { ...Default$2,
        ...(typeof config === 'object' ? config : {})
      }; // use getElement() with the default "body" to get a fresh Element on each instantiation

      config.rootElement = getElement(config.rootElement);
      typeCheckConfig(NAME$2, config, DefaultType$2);
      return config;
    }

    _append() {
      if (this._isAppended) {
        return;
      }

      this._config.rootElement.append(this._getElement());

      EventHandler__default['default'].on(this._getElement(), EVENT_MOUSEDOWN, () => {
        execute(this._config.clickCallback);
      });
      this._isAppended = true;
    }

    dispose() {
      if (!this._isAppended) {
        return;
      }

      EventHandler__default['default'].off(this._element, EVENT_MOUSEDOWN);

      this._element.remove();

      this._isAppended = false;
    }

    _emulateAnimation(callback) {
      executeAfterTransition(callback, this._getElement(), this._config.isAnimated);
    }

  }

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.1.0): util/focustrap.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
  const Default$1 = {
    trapElement: null,
    // The element to trap focus inside of
    autofocus: true
  };
  const DefaultType$1 = {
    trapElement: 'element',
    autofocus: 'boolean'
  };
  const NAME$1 = 'focustrap';
  const DATA_KEY$1 = 'bs.focustrap';
  const EVENT_KEY$1 = `.${DATA_KEY$1}`;
  const EVENT_FOCUSIN = `focusin${EVENT_KEY$1}`;
  const EVENT_KEYDOWN_TAB = `keydown.tab${EVENT_KEY$1}`;
  const TAB_KEY = 'Tab';
  const TAB_NAV_FORWARD = 'forward';
  const TAB_NAV_BACKWARD = 'backward';

  class FocusTrap {
    constructor(config) {
      this._config = this._getConfig(config);
      this._isActive = false;
      this._lastTabNavDirection = null;
    }

    activate() {
      const {
        trapElement,
        autofocus
      } = this._config;

      if (this._isActive) {
        return;
      }

      if (autofocus) {
        trapElement.focus();
      }

      EventHandler__default['default'].off(document, EVENT_KEY$1); // guard against infinite focus loop

      EventHandler__default['default'].on(document, EVENT_FOCUSIN, event => this._handleFocusin(event));
      EventHandler__default['default'].on(document, EVENT_KEYDOWN_TAB, event => this._handleKeydown(event));
      this._isActive = true;
    }

    deactivate() {
      if (!this._isActive) {
        return;
      }

      this._isActive = false;
      EventHandler__default['default'].off(document, EVENT_KEY$1);
    } // Private


    _handleFocusin(event) {
      const {
        target
      } = event;
      const {
        trapElement
      } = this._config;

      if (target === document || target === trapElement || trapElement.contains(target)) {
        return;
      }

      const elements = SelectorEngine__default['default'].focusableChildren(trapElement);

      if (elements.length === 0) {
        trapElement.focus();
      } else if (this._lastTabNavDirection === TAB_NAV_BACKWARD) {
        elements[elements.length - 1].focus();
      } else {
        elements[0].focus();
      }
    }

    _handleKeydown(event) {
      if (event.key !== TAB_KEY) {
        return;
      }

      this._lastTabNavDirection = event.shiftKey ? TAB_NAV_BACKWARD : TAB_NAV_FORWARD;
    }

    _getConfig(config) {
      config = { ...Default$1,
        ...(typeof config === 'object' ? config : {})
      };
      typeCheckConfig(NAME$1, config, DefaultType$1);
      return config;
    }

  }

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.1.0): util/component-functions.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   * --------------------------------------------------------------------------
   */

  const enableDismissTrigger = (component, method = 'hide') => {
    const clickEvent = `click.dismiss${component.EVENT_KEY}`;
    const name = component.NAME;
    EventHandler__default['default'].on(document, clickEvent, `[data-bs-dismiss="${name}"]`, function (event) {
      if (['A', 'AREA'].includes(this.tagName)) {
        event.preventDefault();
      }

      if (isDisabled(this)) {
        return;
      }

      const target = getElementFromSelector(this) || this.closest(`.${name}`);
      const instance = component.getOrCreateInstance(target); // Method argument is left, for Alert and only, as it doesn't implement the 'hide' method

      instance[method]();
    });
  };

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.1.0): offcanvas.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
  /**
   * ------------------------------------------------------------------------
   * Constants
   * ------------------------------------------------------------------------
   */

  const NAME = 'offcanvas';
  const DATA_KEY = 'bs.offcanvas';
  const EVENT_KEY = `.${DATA_KEY}`;
  const DATA_API_KEY = '.data-api';
  const EVENT_LOAD_DATA_API = `load${EVENT_KEY}${DATA_API_KEY}`;
  const ESCAPE_KEY = 'Escape';
  const Default = {
    backdrop: true,
    keyboard: true,
    scroll: false
  };
  const DefaultType = {
    backdrop: 'boolean',
    keyboard: 'boolean',
    scroll: 'boolean'
  };
  const CLASS_NAME_SHOW = 'show';
  const CLASS_NAME_BACKDROP = 'offcanvas-backdrop';
  const OPEN_SELECTOR = '.offcanvas.show';
  const EVENT_SHOW = `show${EVENT_KEY}`;
  const EVENT_SHOWN = `shown${EVENT_KEY}`;
  const EVENT_HIDE = `hide${EVENT_KEY}`;
  const EVENT_HIDDEN = `hidden${EVENT_KEY}`;
  const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}`;
  const EVENT_KEYDOWN_DISMISS = `keydown.dismiss${EVENT_KEY}`;
  const SELECTOR_DATA_TOGGLE = '[data-bs-toggle="offcanvas"]';
  /**
   * ------------------------------------------------------------------------
   * Class Definition
   * ------------------------------------------------------------------------
   */

  class Offcanvas extends BaseComponent__default['default'] {
    constructor(element, config) {
      super(element);
      this._config = this._getConfig(config);
      this._isShown = false;
      this._backdrop = this._initializeBackDrop();
      this._focustrap = this._initializeFocusTrap();

      this._addEventListeners();
    } // Getters


    static get NAME() {
      return NAME;
    }

    static get Default() {
      return Default;
    } // Public


    toggle(relatedTarget) {
      return this._isShown ? this.hide() : this.show(relatedTarget);
    }

    show(relatedTarget) {
      if (this._isShown) {
        return;
      }

      const showEvent = EventHandler__default['default'].trigger(this._element, EVENT_SHOW, {
        relatedTarget
      });

      if (showEvent.defaultPrevented) {
        return;
      }

      this._isShown = true;
      this._element.style.visibility = 'visible';

      this._backdrop.show();

      if (!this._config.scroll) {
        new ScrollBarHelper().hide();
      }

      this._element.removeAttribute('aria-hidden');

      this._element.setAttribute('aria-modal', true);

      this._element.setAttribute('role', 'dialog');

      this._element.classList.add(CLASS_NAME_SHOW);

      const completeCallBack = () => {
        if (!this._config.scroll) {
          this._focustrap.activate();
        }

        EventHandler__default['default'].trigger(this._element, EVENT_SHOWN, {
          relatedTarget
        });
      };

      this._queueCallback(completeCallBack, this._element, true);
    }

    hide() {
      if (!this._isShown) {
        return;
      }

      const hideEvent = EventHandler__default['default'].trigger(this._element, EVENT_HIDE);

      if (hideEvent.defaultPrevented) {
        return;
      }

      this._focustrap.deactivate();

      this._element.blur();

      this._isShown = false;

      this._element.classList.remove(CLASS_NAME_SHOW);

      this._backdrop.hide();

      const completeCallback = () => {
        this._element.setAttribute('aria-hidden', true);

        this._element.removeAttribute('aria-modal');

        this._element.removeAttribute('role');

        this._element.style.visibility = 'hidden';

        if (!this._config.scroll) {
          new ScrollBarHelper().reset();
        }

        EventHandler__default['default'].trigger(this._element, EVENT_HIDDEN);
      };

      this._queueCallback(completeCallback, this._element, true);
    }

    dispose() {
      this._backdrop.dispose();

      this._focustrap.deactivate();

      super.dispose();
    } // Private


    _getConfig(config) {
      config = { ...Default,
        ...Manipulator__default['default'].getDataAttributes(this._element),
        ...(typeof config === 'object' ? config : {})
      };
      typeCheckConfig(NAME, config, DefaultType);
      return config;
    }

    _initializeBackDrop() {
      return new Backdrop({
        className: CLASS_NAME_BACKDROP,
        isVisible: this._config.backdrop,
        isAnimated: true,
        rootElement: this._element.parentNode,
        clickCallback: () => this.hide()
      });
    }

    _initializeFocusTrap() {
      return new FocusTrap({
        trapElement: this._element
      });
    }

    _addEventListeners() {
      EventHandler__default['default'].on(this._element, EVENT_KEYDOWN_DISMISS, event => {
        if (this._config.keyboard && event.key === ESCAPE_KEY) {
          this.hide();
        }
      });
    } // Static


    static jQueryInterface(config) {
      return this.each(function () {
        const data = Offcanvas.getOrCreateInstance(this, config);

        if (typeof config !== 'string') {
          return;
        }

        if (data[config] === undefined || config.startsWith('_') || config === 'constructor') {
          throw new TypeError(`No method named "${config}"`);
        }

        data[config](this);
      });
    }

  }
  /**
   * ------------------------------------------------------------------------
   * Data Api implementation
   * ------------------------------------------------------------------------
   */


  EventHandler__default['default'].on(document, EVENT_CLICK_DATA_API, SELECTOR_DATA_TOGGLE, function (event) {
    const target = getElementFromSelector(this);

    if (['A', 'AREA'].includes(this.tagName)) {
      event.preventDefault();
    }

    if (isDisabled(this)) {
      return;
    }

    EventHandler__default['default'].one(target, EVENT_HIDDEN, () => {
      // focus on trigger when it is closed
      if (isVisible(this)) {
        this.focus();
      }
    }); // avoid conflict when clicking a toggler of an offcanvas, while another is open

    const allReadyOpen = SelectorEngine__default['default'].findOne(OPEN_SELECTOR);

    if (allReadyOpen && allReadyOpen !== target) {
      Offcanvas.getInstance(allReadyOpen).hide();
    }

    const data = Offcanvas.getOrCreateInstance(target);
    data.toggle(this);
  });
  EventHandler__default['default'].on(window, EVENT_LOAD_DATA_API, () => SelectorEngine__default['default'].find(OPEN_SELECTOR).forEach(el => Offcanvas.getOrCreateInstance(el).show()));
  enableDismissTrigger(Offcanvas);
  /**
   * ------------------------------------------------------------------------
   * jQuery
   * ------------------------------------------------------------------------
   */

  defineJQueryPlugin(Offcanvas);

  return Offcanvas;

})));
//# sourceMappingURL=offcanvas.js.map