carbon-components/umd/components/carousel/carousel.js

(function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(['exports', '../../globals/js/settings', '../../globals/js/misc/mixin', '../../globals/js/mixins/create-component', '../../globals/js/mixins/init-component-by-search'], factory);
  } else if (typeof exports !== "undefined") {
    factory(exports, require('../../globals/js/settings'), require('../../globals/js/misc/mixin'), require('../../globals/js/mixins/create-component'), require('../../globals/js/mixins/init-component-by-search'));
  } else {
    var mod = {
      exports: {}
    };
    factory(mod.exports, global.settings, global.mixin, global.createComponent, global.initComponentBySearch);
    global.carousel = mod.exports;
  }
})(this, function (exports, _settings, _mixin2, _createComponent, _initComponentBySearch) {
  'use strict';

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _settings2 = _interopRequireDefault(_settings);

  var _mixin3 = _interopRequireDefault(_mixin2);

  var _createComponent2 = _interopRequireDefault(_createComponent);

  var _initComponentBySearch2 = _interopRequireDefault(_initComponentBySearch);

  function _interopRequireDefault(obj) {
    return obj && obj.__esModule ? obj : {
      default: obj
    };
  }

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

  var _createClass = 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);
      }
    }

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

  function _possibleConstructorReturn(self, call) {
    if (!self) {
      throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
    }

    return call && (typeof call === "object" || typeof call === "function") ? call : self;
  }

  function _inherits(subClass, superClass) {
    if (typeof superClass !== "function" && superClass !== null) {
      throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
    }

    subClass.prototype = Object.create(superClass && superClass.prototype, {
      constructor: {
        value: subClass,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
    if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
  }

  var Carousel = function (_mixin) {
    _inherits(Carousel, _mixin);

    /**
     * Carousel.
     * @extends CreateComponent
     * @extends InitComponentBySearch
     * @param {HTMLElement} element The element working as an carousel.
     */
    function Carousel(element, options) {
      _classCallCheck(this, Carousel);

      var _this = _possibleConstructorReturn(this, (Carousel.__proto__ || Object.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(' + newTranslateValue + 'px)';
      };

      _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 = _settings2.default.prefix;

        return {
          selectorInit: '[data-carousel]',
          selectorFilmstrip: '.' + prefix + '--filmstrip',
          selectorScrollRight: '[data-scroll-right]',
          selectorScrollLeft: '[data-scroll-left]',
          selectorCarouselBtn: '.' + prefix + '--carousel__btn',
          selectorCarouselItem: '.' + prefix + '--carousel__item'
        };
      }
    }]);

    return Carousel;
  }((0, _mixin3.default)(_createComponent2.default, _initComponentBySearch2.default));

  Carousel.components = new WeakMap();
  exports.default = Carousel;
});