react-slick/lib/dots.js

React port of slick carousel

'use strict';

exports.__esModule = true;
exports.Dots = undefined;

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _classnames = require('classnames');

var _classnames2 = _interopRequireDefault(_classnames);

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"); } }

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 getDotCount = function getDotCount(spec) {
  var dots;

  if (spec.infinite) {
    dots = Math.ceil(spec.slideCount / spec.slidesToScroll);
  } else {
    dots = Math.ceil((spec.slideCount - spec.slidesToShow) / spec.slidesToScroll) + 1;
  }

  return dots;
};

var Dots = exports.Dots = function (_React$Component) {
  _inherits(Dots, _React$Component);

  function Dots() {
    _classCallCheck(this, Dots);

    return _possibleConstructorReturn(this, _React$Component.apply(this, arguments));
  }

  Dots.prototype.clickHandler = function clickHandler(options, e) {
    // In Autoplay the focus stays on clicked button even after transition
    // to next slide. That only goes away by click somewhere outside
    e.preventDefault();
    this.props.clickHandler(options);
  };

  Dots.prototype.render = function render() {
    var _this2 = this;

    var dotCount = getDotCount({
      slideCount: this.props.slideCount,
      slidesToScroll: this.props.slidesToScroll,
      slidesToShow: this.props.slidesToShow,
      infinite: this.props.infinite
    });

    // Apply join & split to Array to pre-fill it for IE8
    //
    // Credit: http://stackoverflow.com/a/13735425/1849458
    var _props = this.props,
        onMouseEnter = _props.onMouseEnter,
        onMouseOver = _props.onMouseOver,
        onMouseLeave = _props.onMouseLeave;

    var mouseEvents = { onMouseEnter: onMouseEnter, onMouseOver: onMouseOver, onMouseLeave: onMouseLeave };
    var dots = Array.apply(null, Array(dotCount + 1).join('0').split('')).map(function (x, i) {

      var leftBound = i * _this2.props.slidesToScroll;
      var rightBound = i * _this2.props.slidesToScroll + (_this2.props.slidesToScroll - 1);
      var className = (0, _classnames2.default)({
        'slick-active': _this2.props.currentSlide >= leftBound && _this2.props.currentSlide <= rightBound
      });

      var dotOptions = {
        message: 'dots',
        index: i,
        slidesToScroll: _this2.props.slidesToScroll,
        currentSlide: _this2.props.currentSlide
      };

      var onClick = _this2.clickHandler.bind(_this2, dotOptions);
      return _react2.default.createElement(
        'li',
        { key: i, className: className },
        _react2.default.cloneElement(_this2.props.customPaging(i), { onClick: onClick })
      );
    });

    return _react2.default.cloneElement(this.props.appendDots(dots), _extends({ className: this.props.dotsClass }, mouseEvents));
  };

  return Dots;
}(_react2.default.Component);