react-responsive-carousel/lib/js/components/Thumbs.js

React Responsive Carousel

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _react = _interopRequireWildcard(require("react"));

var _cssClasses = _interopRequireDefault(require("../cssClasses"));

var _dimensions = require("../dimensions");

var _CSSTranslate = _interopRequireDefault(require("../CSSTranslate"));

var _reactEasySwipe = _interopRequireDefault(require("react-easy-swipe"));

var _window = _interopRequireDefault(require("../shims/window"));

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

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _typeof(obj) { "@babel/helpers - typeof"; 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 _extends() { _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; }; return _extends.apply(this, arguments); }

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 _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); }

function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

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 _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }

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

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var isKeyboardEvent = function isKeyboardEvent(e) {
  return e.hasOwnProperty('key');
};

var Thumbs = /*#__PURE__*/function (_Component) {
  _inherits(Thumbs, _Component);

  var _super = _createSuper(Thumbs);

  function Thumbs(_props) {
    var _this;

    _classCallCheck(this, Thumbs);

    _this = _super.call(this, _props);

    _defineProperty(_assertThisInitialized(_this), "itemsWrapperRef", void 0);

    _defineProperty(_assertThisInitialized(_this), "itemsListRef", void 0);

    _defineProperty(_assertThisInitialized(_this), "thumbsRef", void 0);

    _defineProperty(_assertThisInitialized(_this), "setItemsWrapperRef", function (node) {
      _this.itemsWrapperRef = node;
    });

    _defineProperty(_assertThisInitialized(_this), "setItemsListRef", function (node) {
      _this.itemsListRef = node;
    });

    _defineProperty(_assertThisInitialized(_this), "setThumbsRef", function (node, index) {
      if (!_this.thumbsRef) {
        _this.thumbsRef = [];
      }

      _this.thumbsRef[index] = node;
    });

    _defineProperty(_assertThisInitialized(_this), "updateSizes", function () {
      if (!_this.props.children || !_this.itemsWrapperRef || !_this.thumbsRef) {
        return;
      }

      var total = _react.Children.count(_this.props.children);

      var wrapperSize = _this.itemsWrapperRef.clientWidth;
      var itemSize = _this.props.thumbWidth ? _this.props.thumbWidth : (0, _dimensions.outerWidth)(_this.thumbsRef[0]);
      var visibleItems = Math.floor(wrapperSize / itemSize);
      var showArrows = visibleItems < total;
      var lastPosition = showArrows ? total - visibleItems : 0;

      _this.setState(function (_state, props) {
        return {
          itemSize: itemSize,
          visibleItems: visibleItems,
          firstItem: showArrows ? _this.getFirstItem(props.selectedItem) : 0,
          lastPosition: lastPosition,
          showArrows: showArrows
        };
      });
    });

    _defineProperty(_assertThisInitialized(_this), "handleClickItem", function (index, item, e) {
      if (!isKeyboardEvent(e) || e.key === 'Enter') {
        var handler = _this.props.onSelectItem;

        if (typeof handler === 'function') {
          handler(index, item);
        }
      }
    });

    _defineProperty(_assertThisInitialized(_this), "onSwipeStart", function () {
      _this.setState({
        swiping: true
      });
    });

    _defineProperty(_assertThisInitialized(_this), "onSwipeEnd", function () {
      _this.setState({
        swiping: false
      });
    });

    _defineProperty(_assertThisInitialized(_this), "onSwipeMove", function (delta) {
      var deltaX = delta.x;

      if (!_this.state.itemSize || !_this.itemsWrapperRef || !_this.state.visibleItems) {
        return false;
      }

      var leftBoundary = 0;

      var childrenLength = _react.Children.count(_this.props.children);

      var currentPosition = -(_this.state.firstItem * 100) / _this.state.visibleItems;
      var lastLeftItem = Math.max(childrenLength - _this.state.visibleItems, 0);
      var lastLeftBoundary = -lastLeftItem * 100 / _this.state.visibleItems; // prevent user from swiping left out of boundaries

      if (currentPosition === leftBoundary && deltaX > 0) {
        deltaX = 0;
      } // prevent user from swiping right out of boundaries


      if (currentPosition === lastLeftBoundary && deltaX < 0) {
        deltaX = 0;
      }

      var wrapperSize = _this.itemsWrapperRef.clientWidth;
      var position = currentPosition + 100 / (wrapperSize / deltaX); // if 3d isn't available we will use left to move

      if (_this.itemsListRef) {
        ['WebkitTransform', 'MozTransform', 'MsTransform', 'OTransform', 'transform', 'msTransform'].forEach(function (prop) {
          _this.itemsListRef.style[prop] = (0, _CSSTranslate.default)(position, '%', _this.props.axis);
        });
      }

      return true;
    });

    _defineProperty(_assertThisInitialized(_this), "slideRight", function (positions) {
      _this.moveTo(_this.state.firstItem - (typeof positions === 'number' ? positions : 1));
    });

    _defineProperty(_assertThisInitialized(_this), "slideLeft", function (positions) {
      _this.moveTo(_this.state.firstItem + (typeof positions === 'number' ? positions : 1));
    });

    _defineProperty(_assertThisInitialized(_this), "moveTo", function (position) {
      // position can't be lower than 0
      position = position < 0 ? 0 : position; // position can't be higher than last postion

      position = position >= _this.state.lastPosition ? _this.state.lastPosition : position;

      _this.setState({
        firstItem: position
      });
    });

    _this.state = {
      selectedItem: _props.selectedItem,
      swiping: false,
      showArrows: false,
      firstItem: 0,
      visibleItems: 0,
      lastPosition: 0
    };
    return _this;
  }

  _createClass(Thumbs, [{
    key: "componentDidMount",
    value: function componentDidMount() {
      this.setupThumbs();
    }
  }, {
    key: "componentDidUpdate",
    value: function componentDidUpdate(prevProps) {
      if (this.props.selectedItem !== this.state.selectedItem) {
        this.setState({
          selectedItem: this.props.selectedItem,
          firstItem: this.getFirstItem(this.props.selectedItem)
        });
      }

      if (this.props.children === prevProps.children) {
        return;
      } // This will capture any size changes for arrow adjustments etc.
      // usually in the same render cycle so we don't see any flickers


      this.updateSizes();
    }
  }, {
    key: "componentWillUnmount",
    value: function componentWillUnmount() {
      this.destroyThumbs();
    }
  }, {
    key: "setupThumbs",
    value: function setupThumbs() {
      // as the widths are calculated, we need to resize
      // the carousel when the window is resized
      (0, _window.default)().addEventListener('resize', this.updateSizes); // issue #2 - image loading smaller

      (0, _window.default)().addEventListener('DOMContentLoaded', this.updateSizes); // when the component is rendered we need to calculate
      // the container size to adjust the responsive behaviour

      this.updateSizes();
    }
  }, {
    key: "destroyThumbs",
    value: function destroyThumbs() {
      // removing listeners
      (0, _window.default)().removeEventListener('resize', this.updateSizes);
      (0, _window.default)().removeEventListener('DOMContentLoaded', this.updateSizes);
    }
  }, {
    key: "getFirstItem",
    value: function getFirstItem(selectedItem) {
      var firstItem = selectedItem;

      if (selectedItem >= this.state.lastPosition) {
        firstItem = this.state.lastPosition;
      }

      if (selectedItem < this.state.firstItem + this.state.visibleItems) {
        firstItem = this.state.firstItem;
      }

      if (selectedItem < this.state.firstItem) {
        firstItem = selectedItem;
      }

      return firstItem;
    }
  }, {
    key: "renderItems",
    value: function renderItems() {
      var _this2 = this;

      return this.props.children.map(function (img, index) {
        var itemClass = _cssClasses.default.ITEM(false, index === _this2.state.selectedItem);

        var thumbProps = {
          key: index,
          ref: function ref(e) {
            return _this2.setThumbsRef(e, index);
          },
          className: itemClass,
          onClick: _this2.handleClickItem.bind(_this2, index, _this2.props.children[index]),
          onKeyDown: _this2.handleClickItem.bind(_this2, index, _this2.props.children[index]),
          'aria-label': "".concat(_this2.props.labels.item, " ").concat(index + 1),
          style: {
            width: _this2.props.thumbWidth
          }
        };
        return /*#__PURE__*/_react.default.createElement("li", _extends({}, thumbProps, {
          role: "button",
          tabIndex: 0
        }), img);
      });
    }
  }, {
    key: "render",
    value: function render() {
      var _this3 = this;

      if (!this.props.children) {
        return null;
      }

      var isSwipeable = _react.Children.count(this.props.children) > 1; // show left arrow?

      var hasPrev = this.state.showArrows && this.state.firstItem > 0; // show right arrow

      var hasNext = this.state.showArrows && this.state.firstItem < this.state.lastPosition; // obj to hold the transformations and styles

      var itemListStyles = {};
      var currentPosition = -this.state.firstItem * (this.state.itemSize || 0);
      var transformProp = (0, _CSSTranslate.default)(currentPosition, 'px', this.props.axis);
      var transitionTime = this.props.transitionTime + 'ms';
      itemListStyles = {
        WebkitTransform: transformProp,
        MozTransform: transformProp,
        MsTransform: transformProp,
        OTransform: transformProp,
        transform: transformProp,
        msTransform: transformProp,
        WebkitTransitionDuration: transitionTime,
        MozTransitionDuration: transitionTime,
        MsTransitionDuration: transitionTime,
        OTransitionDuration: transitionTime,
        transitionDuration: transitionTime,
        msTransitionDuration: transitionTime
      };
      return /*#__PURE__*/_react.default.createElement("div", {
        className: _cssClasses.default.CAROUSEL(false)
      }, /*#__PURE__*/_react.default.createElement("div", {
        className: _cssClasses.default.WRAPPER(false),
        ref: this.setItemsWrapperRef
      }, /*#__PURE__*/_react.default.createElement("button", {
        type: "button",
        className: _cssClasses.default.ARROW_PREV(!hasPrev),
        onClick: function onClick() {
          return _this3.slideRight();
        },
        "aria-label": this.props.labels.leftArrow
      }), isSwipeable ? /*#__PURE__*/_react.default.createElement(_reactEasySwipe.default, {
        tagName: "ul",
        className: _cssClasses.default.SLIDER(false, this.state.swiping),
        onSwipeLeft: this.slideLeft,
        onSwipeRight: this.slideRight,
        onSwipeMove: this.onSwipeMove,
        onSwipeStart: this.onSwipeStart,
        onSwipeEnd: this.onSwipeEnd,
        style: itemListStyles,
        innerRef: this.setItemsListRef,
        allowMouseEvents: this.props.emulateTouch
      }, this.renderItems()) : /*#__PURE__*/_react.default.createElement("ul", {
        className: _cssClasses.default.SLIDER(false, this.state.swiping),
        ref: function ref(node) {
          return _this3.setItemsListRef(node);
        },
        style: itemListStyles
      }, this.renderItems()), /*#__PURE__*/_react.default.createElement("button", {
        type: "button",
        className: _cssClasses.default.ARROW_NEXT(!hasNext),
        onClick: function onClick() {
          return _this3.slideLeft();
        },
        "aria-label": this.props.labels.rightArrow
      })));
    }
  }]);

  return Thumbs;
}(_react.Component);

exports.default = Thumbs;

_defineProperty(Thumbs, "displayName", 'Thumbs');

_defineProperty(Thumbs, "defaultProps", {
  axis: 'horizontal',
  labels: {
    leftArrow: 'previous slide / item',
    rightArrow: 'next slide / item',
    item: 'slide item'
  },
  selectedItem: 0,
  thumbWidth: 80,
  transitionTime: 350
});