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

Optimizely's Component Library.

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import classNames from "classnames";
import Immutable from "immutable";
import PropTypes from "prop-types";
import React from "react";
import { DragSource } from "react-dnd";
import { getEmptyImage } from "react-dnd-html5-backend";
import SortTarget from "../SortTarget";
import types from "../draggableTypes";
/**
 * handleBeginDrag
 * @description Begins drag interaction for the current item
 * @param {Object} props - SortableItem props
 * @returns {Object} Information passed to item renderer + sort target upon drag
 */

function handleBeginDrag(props) {
  var item = props.item,
      position = props.position,
      id = props.id;
  return {
    data: item,
    id: id,
    position: position,
    type: "item"
  };
}
/**
 * handleEndDrag
 * @description Ends drag interaction for the current item
 * @param {Object} props - SortableItem props
 */


function handleEndDrag(props) {
  props.endDrag();
}
/**
 * isItemBeingDragged
 * @description Calculates whether the current item is being dragged
 * @param {Object} props - SortableItem props
 * @param {Object} monitor - Interface to interact with react-dnd state
 * @returns {Boolean} Whether or not the current item is being dragged
 */


function isItemBeingDragged(props, monitor) {
  return !monitor.didDrop() && monitor.getItem().id === props.id && monitor.getItem().type === "item";
}

var SortableItem =
/*#__PURE__*/
function (_React$Component) {
  _inherits(SortableItem, _React$Component);

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

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

  _createClass(SortableItem, [{
    key: "componentDidMount",
    value: function componentDidMount() {
      var connectDragPreview = this.props.connectDragPreview;
      connectDragPreview(getEmptyImage(), {
        captureDragState: true
      });
    }
  }, {
    key: "render",
    value: function render() {
      var _this$props = this.props,
          baseTestSection = _this$props.baseTestSection,
          connectDragSource = _this$props.connectDragSource,
          isDragging = _this$props.isDragging,
          isDragPreview = _this$props.isDragPreview,
          item = _this$props.item,
          position = _this$props.position,
          onMove = _this$props.onMove,
          render = _this$props.render;
      var targetPosition = [].concat(_toConsumableArray(position.slice(0, -1)), [position[position.length - 1] + 1]);
      var className = classNames({
        "oui-sortable__drag-placeholder": !isDragPreview && isDragging,
        "oui-sortable__item": true,
        "pointer-events--none": !isDragPreview && isDragging
      });
      var renderedItem = render({
        baseTestSection: baseTestSection,
        connectDragSource: connectDragSource,
        item: item,
        isDragging: isDragging,
        isDragPreview: isDragPreview,
        position: position
      });
      var testSectionName = isDragPreview ? "item-preview" : "item";
      var testSectionId = position.join("-");
      var testSection = "".concat(baseTestSection, "-").concat(testSectionName, "-").concat(testSectionId);
      return React.createElement(React.Fragment, null, React.createElement("li", {
        className: className,
        "data-test-section": testSection
      }, renderedItem), React.createElement(SortTarget, {
        baseTestSection: baseTestSection,
        onMove: onMove,
        ownerId: item.get("id"),
        ownerType: "item",
        position: targetPosition
      }));
    }
  }]);

  return SortableItem;
}(React.Component);

_defineProperty(SortableItem, "propTypes", {
  baseTestSection: PropTypes.string.isRequired,
  connectDragPreview: PropTypes.func.isRequired,
  connectDragSource: PropTypes.func.isRequired,
  endDrag: PropTypes.func.isRequired,
  id: PropTypes.oneOfType([PropTypes.string, PropTypes.number]).isRequired,
  isDragPreview: PropTypes.bool,
  isDragging: PropTypes.bool.isRequired,
  item: PropTypes.instanceOf(Immutable.Map).isRequired,
  onMove: PropTypes.func.isRequired,
  position: PropTypes.arrayOf(PropTypes.number).isRequired,
  render: PropTypes.func.isRequired
});

_defineProperty(SortableItem, "defaultProps", {
  isDragPreview: false
});

export default DragSource(types.item, {
  beginDrag: handleBeginDrag,
  endDrag: handleEndDrag,
  isDragging: isItemBeingDragged
}, function (connect, monitor) {
  return {
    connectDragPreview: connect.dragPreview(),
    connectDragSource: connect.dragSource(),
    isDragging: monitor.isDragging()
  };
})(SortableItem);