optimizely-oui/module/js/components/Sortable/SortTarget/index.js

Optimizely's Component Library.

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

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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); }

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import PropTypes from "prop-types";
import React from "react";
import { DropTarget } from "react-dnd";
import types from "../draggableTypes";
/**
 * areArraysEqual
 * @param {Array.<Any>} a - First array to compare
 * @param {Array.<Any>} b - Second array to compare
 * @returns {Boolean} - Whether or not the arrays are equal
 */

function areArraysEqual(a, b) {
  if (a.length !== b.length) {
    return false;
  }

  return a.reduce(function (isEqual, itemInA, i) {
    return isEqual && itemInA === b[i];
  }, true);
}
/**
 * handleHover
 * @description Adjusts the item order when an item is dragged over this target
 * @param {Object} props - SortTarget props
 * @param {Object} monitor - Interface for accessing react-dnd state
 */


function handleHover(props, monitor) {
  var dragItem = monitor.getItem();
  var currentPosition = dragItem.position;
  var nextPosition = props.position,
      onMove = props.onMove,
      ownerId = props.ownerId,
      ownerType = props.ownerType;

  if (!areArraysEqual(currentPosition, nextPosition)) {
    if (dragItem.type === "item" && ownerType === "item" && dragItem.data.get("id") === ownerId) {
      return;
    }

    if (dragItem.type === "group" && (ownerType === "group" && dragItem.id === ownerId || nextPosition.length !== 1)) {
      return;
    }

    onMove(currentPosition, nextPosition).then(function (_ref) {
      var position = _ref.position;
      dragItem.position = position;
    });
  }
}

var SortTarget =
/*#__PURE__*/
function (_React$PureComponent) {
  _inherits(SortTarget, _React$PureComponent);

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

    return _possibleConstructorReturn(this, _getPrototypeOf(SortTarget).apply(this, arguments));
  }

  _createClass(SortTarget, [{
    key: "render",
    value: function render() {
      var _this$props = this.props,
          baseTestSection = _this$props.baseTestSection,
          connectDropTarget = _this$props.connectDropTarget,
          position = _this$props.position;
      var testSectionId = position.join("-");
      var testSection = "".concat(baseTestSection, "-target-").concat(testSectionId);
      return connectDropTarget(React.createElement("li", {
        className: "soft-half--top",
        "data-test-section": testSection
      }));
    }
  }]);

  return SortTarget;
}(React.PureComponent);

_defineProperty(SortTarget, "propTypes", {
  baseTestSection: PropTypes.string.isRequired,
  connectDropTarget: PropTypes.func.isRequired,
  onMove: PropTypes.func.isRequired,
  ownerId: PropTypes.oneOfType([PropTypes.string, PropTypes.number]).isRequired,
  ownerType: PropTypes.oneOf(["item", "group"]).isRequired,
  position: PropTypes.arrayOf(PropTypes.number).isRequired
});

export default DropTarget(types.item, {
  hover: handleHover
}, function (connect, monitor) {
  return {
    canDrop: monitor.canDrop(),
    connectDropTarget: connect.dropTarget(),
    isOver: monitor.isOver()
  };
})(SortTarget);