carbon-components/es/components/carousel/carousel.js

Carbon Components is a component library for IBM Cloud

function _typeof(obj) {
  if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
    _typeof = function _typeof(obj) {
      return typeof obj;
    };
  } else {
    _typeof = function _typeof(obj) {
      return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
    };
  }

  return _typeof(obj);
}

function _classCallCheck(instance, Constructor) {
  if (!(instance instanceof Constructor)) {
    throw new TypeError("Cannot call a class as a 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);
  }
}

function _createClass(Constructor, protoProps, staticProps) {
  if (protoProps) _defineProperties(Constructor.prototype, protoProps);
  if (staticProps) _defineProperties(Constructor, staticProps);
  return Constructor;
}

function _possibleConstructorReturn(self, call) {
  if (call && (_typeof(call) === "object" || typeof call === "function")) {
    return call;
  }

  return _assertThisInitialized(self);
}

function _assertThisInitialized(self) {
  if (self === void 0) {
    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
  }

  return self;
}

function _getPrototypeOf(o) {
  _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
    return o.__proto__ || Object.getPrototypeOf(o);
  };
  return _getPrototypeOf(o);
}

function _inherits(subClass, superClass) {
  if (typeof superClass !== "function" && superClass !== null) {
    throw new TypeError("Super expression must either be null or a function");
  }

  subClass.prototype = Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      writable: true,
      configurable: true
    }
  });
  if (superClass) _setPrototypeOf(subClass, superClass);
}

function _setPrototypeOf(o, p) {
  _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
    o.__proto__ = p;
    return o;
  };

  return _setPrototypeOf(o, p);
}
/**
 * Copyright IBM Corp. 2016, 2018
 *
 * This source code is licensed under the Apache-2.0 license found in the
 * LICENSE file in the root directory of this source tree.
 */


import warning from 'warning';
import { breakingChangesX } from '../../globals/js/feature-flags';
import settings from '../../globals/js/settings';
import mixin from '../../globals/js/misc/mixin';
import createComponent from '../../globals/js/mixins/create-component';
import initComponentBySearch from '../../globals/js/mixins/init-component-by-search';
import removedComponent from '../removed-component';
var didWarnAboutDeprecation;

var Carousel =
/*#__PURE__*/
function (_mixin) {
  _inherits(Carousel, _mixin);
  /**
   * Carousel.
   * @extends CreateComponent
   * @extends InitComponentBySearch
   * @param {HTMLElement} element The element working as an carousel.
   */


  function Carousel(element, options) {
    var _this;

    _classCallCheck(this, Carousel);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(Carousel).call(this, element, options));

    _this.handleClick = function (evt) {
      if (evt.target.matches(_this.options.selectorScrollRight)) {
        _this.sideScroll('right');
      } else {
        _this.sideScroll('left');
      }
    };

    _this.sideScroll = function (direction) {
      var filmstripWidth = _this.filmstrip.getBoundingClientRect().width;

      var itemWidth = _this.carouselItem.getBoundingClientRect().width + 20;
      var re = /\.*translateX\((.*)px\)/i;
      var translateXValue = _this.filmstrip.style.transform ? Number(_this.filmstrip.style.transform.split(re)[1]) : 0;
      var directionValue = direction === 'right' ? -1 : 1;
      var itemWidthDirection = itemWidth * directionValue;
      var newTranslateValue = itemWidthDirection + translateXValue;

      if (newTranslateValue > 0) {
        newTranslateValue = 0;
      }

      if (newTranslateValue < filmstripWidth * -1) {
        newTranslateValue = filmstripWidth * -1;
      }

      _this.filmstrip.style.transform = "translateX(".concat(newTranslateValue, "px)");
    };

    if (process.env.NODE_ENV !== "production") {
      process.env.NODE_ENV !== "production" ? warning(didWarnAboutDeprecation, 'The `Carousel` component in `carbon-components` has been deprecated. It will be removed in the next major release.') : void 0;
      didWarnAboutDeprecation = true;
    }

    _this.filmstrip = _this.element.querySelector(_this.options.selectorFilmstrip);
    _this.carouselItem = _this.element.querySelector(_this.options.selectorCarouselItem);

    _this.element.addEventListener('click', function (evt) {
      return _this.handleClick(evt);
    });

    return _this;
  }

  _createClass(Carousel, null, [{
    key: "options",
    get: function get() {
      var prefix = settings.prefix;
      return {
        selectorInit: '[data-carousel]',
        selectorFilmstrip: ".".concat(prefix, "--filmstrip"),
        selectorScrollRight: '[data-scroll-right]',
        selectorScrollLeft: '[data-scroll-left]',
        selectorCarouselBtn: ".".concat(prefix, "--carousel__btn"),
        selectorCarouselItem: ".".concat(prefix, "--carousel__item")
      };
    }
    /**
     * The map associating DOM element and accordion UI instance.
     * @type {WeakMap}
     */

  }]);

  Carousel.components = new WeakMap();
  return Carousel;
}(mixin(createComponent, initComponentBySearch));

export default !breakingChangesX ? Carousel : removedComponent('Carousel');