react-slick/lib/slider.js

React port of slick carousel

'use strict';

exports.__esModule = true;

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 _innerSlider = require('./inner-slider');

var _json2mq = require('json2mq');

var _json2mq2 = _interopRequireDefault(_json2mq);

var _defaultProps = require('./default-props');

var _defaultProps2 = _interopRequireDefault(_defaultProps);

var _canUseDom = require('can-use-dom');

var _canUseDom2 = _interopRequireDefault(_canUseDom);

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 enquire = _canUseDom2.default && require('enquire.js');

var Slider = function (_React$Component) {
  _inherits(Slider, _React$Component);

  function Slider(props) {
    _classCallCheck(this, Slider);

    var _this = _possibleConstructorReturn(this, _React$Component.call(this, props));

    _this.innerSliderRefHandler = function (ref) {
      return _this.innerSlider = ref;
    };

    _this.slickPrev = function () {
      return _this.innerSlider.slickPrev();
    };

    _this.slickNext = function () {
      return _this.innerSlider.slickNext();
    };

    _this.slickGoTo = function (slide) {
      return _this.innerSlider.slickGoTo(slide);
    };

    _this.slickPause = function () {
      return _this.innerSlider.pause('paused');
    };

    _this.slickPlay = function () {
      return _this.innerSlider.autoPlay('play');
    };

    _this.state = {
      breakpoint: null
    };
    _this._responsiveMediaHandlers = [];
    return _this;
  }

  Slider.prototype.media = function media(query, handler) {
    // javascript handler for  css media query
    enquire.register(query, handler);
    this._responsiveMediaHandlers.push({ query: query, handler: handler });
  };

  // handles responsive breakpoints


  Slider.prototype.componentWillMount = function componentWillMount() {
    var _this2 = this;

    if (this.props.responsive) {
      var breakpoints = this.props.responsive.map(function (breakpt) {
        return breakpt.breakpoint;
      });
      // sort them in increasing order of their numerical value
      breakpoints.sort(function (x, y) {
        return x - y;
      });

      breakpoints.forEach(function (breakpoint, index) {
        // media query for each breakpoint
        var bQuery = void 0;
        if (index === 0) {
          bQuery = (0, _json2mq2.default)({ minWidth: 0, maxWidth: breakpoint });
        } else {
          bQuery = (0, _json2mq2.default)({ minWidth: breakpoints[index - 1] + 1, maxWidth: breakpoint });
        }
        // when not using server side rendering
        _canUseDom2.default && _this2.media(bQuery, function () {
          _this2.setState({ breakpoint: breakpoint });
        });
      });

      // Register media query for full screen. Need to support resize from small to large
      // convert javascript object to media query string
      var query = (0, _json2mq2.default)({ minWidth: breakpoints.slice(-1)[0] });

      _canUseDom2.default && this.media(query, function () {
        _this2.setState({ breakpoint: null });
      });
    }
  };

  Slider.prototype.componentWillUnmount = function componentWillUnmount() {
    this._responsiveMediaHandlers.forEach(function (obj) {
      enquire.unregister(obj.query, obj.handler);
    });
  };

  Slider.prototype.render = function render() {
    var _this3 = this;

    var settings;
    var newProps;
    if (this.state.breakpoint) {
      newProps = this.props.responsive.filter(function (resp) {
        return resp.breakpoint === _this3.state.breakpoint;
      });
      settings = newProps[0].settings === 'unslick' ? 'unslick' : _extends({}, _defaultProps2.default, this.props, newProps[0].settings);
    } else {
      settings = _extends({}, _defaultProps2.default, this.props);
    }

    // force scrolling by one if centerMode is on
    if (settings.centerMode) {
      if (settings.slidesToScroll > 1 && process.env.NODE_ENV !== 'production') {
        console.warn('slidesToScroll should be equal to 1 in centerMode, you are using ' + settings.slidesToScroll);
      }
      settings.slidesToScroll = 1;
    }
    // force showing one slide and scrolling by one if the fade mode is on
    if (settings.fade) {
      if (settings.slidesToShow > 1 && process.env.NODE_ENV !== 'production') {
        console.warn('slidesToShow should be equal to 1 when fade is true, you\'re using ' + settings.slidesToShow);
      }
      if (settings.slidesToScroll > 1 && process.env.NODE_ENV !== 'production') {
        console.warn('slidesToScroll should be equal to 1 when fade is true, you\'re using ' + settings.slidesToScroll);
      }
      settings.slidesToShow = 1;
      settings.slidesToScroll = 1;
    }

    // makes sure that children is an array, even when there is only 1 child
    var children = _react2.default.Children.toArray(this.props.children);

    // Children may contain false or null, so we should filter them
    // children may also contain string filled with spaces (in certain cases where we use jsx strings)
    children = children.filter(function (child) {
      if (typeof child === 'string') {
        return !!child.trim();
      }
      return !!child;
    });

    if (settings === 'unslick') {

      var className = 'regular slider ' + (this.props.className || '');
      return _react2.default.createElement(
        'div',
        { className: className },
        children
      );
    } else if (children.length <= settings.slidesToShow) {
      settings.unslick = true;
    }
    return _react2.default.createElement(
      _innerSlider.InnerSlider,
      _extends({ ref: this.innerSliderRefHandler }, settings),
      children
    );
  };

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

exports.default = Slider;