lucid-ui/lib/components/DragCaptureZone/DragCaptureZone.js

A UI component library from AppNexus.

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); }

import _keys from "lodash/keys";
import _noop from "lodash/noop";

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; }

import React from 'react';
import PropTypes from 'react-peek/prop-types';
import { lucidClassNames } from '../../util/style-helpers';
import { omitProps } from '../../util/component-types';
var cx = lucidClassNames.bind('&-DragCaptureZone');
var func = PropTypes.func,
    string = PropTypes.string;

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

  var _super = _createSuper(DragCaptureZone);

  function DragCaptureZone() {
    var _this;

    _classCallCheck(this, DragCaptureZone);

    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    _this = _super.call.apply(_super, [this].concat(args));

    _defineProperty(_assertThisInitialized(_this), "elementRef", /*#__PURE__*/React.createRef());

    _defineProperty(_assertThisInitialized(_this), "state", {
      pageX: 0,
      pageY: 0
    });

    _defineProperty(_assertThisInitialized(_this), "handleDrag", function (event) {
      var pageX;
      var pageY;
      /* istanbul ignore next */

      if ('touches' in event) {
        pageX = event.touches[0].pageX;
        pageY = event.touches[0].pageY;
      } else {
        pageX = event.pageX;
        pageY = event.pageY;
      }

      event.preventDefault();

      _this.props.onDrag({
        dX: pageX - _this.state.pageX,
        dY: pageY - _this.state.pageY,
        pageX: pageX,
        pageY: pageY
      }, {
        event: event,
        props: _this.props
      });
    });

    _defineProperty(_assertThisInitialized(_this), "handleMouseDragStart", function (event) {
      var pageX = event.pageX;
      var pageY = event.pageY;
      window.document.addEventListener('mousemove', _this.handleDrag);
      window.document.addEventListener('mouseup', _this.handleDragEnd);
      event.preventDefault();

      _this.props.onDragStart({
        dX: 0,
        dY: 0,
        pageX: pageX,
        pageY: pageY
      }, {
        event: event,
        props: _this.props
      });

      _this.setState({
        pageX: pageX,
        pageY: pageY
      });
    });

    _defineProperty(_assertThisInitialized(_this), "handleTouchDragStart", function (event) {
      var pageX = event.touches[0].pageX;
      var pageY = event.touches[0].pageY;
      event.preventDefault();

      _this.props.onDragStart({
        dX: 0,
        dY: 0,
        pageX: pageX,
        pageY: pageY
      }, {
        event: event,
        props: _this.props
      });

      _this.setState({
        pageX: pageX,
        pageY: pageY
      });
    });

    _defineProperty(_assertThisInitialized(_this), "handleDragEnd", function (event) {
      var pageX;
      var pageY;
      /* istanbul ignore next */

      if ('changedTouches' in event) {
        pageX = event.changedTouches[0].pageX;
        pageY = event.changedTouches[0].pageY;
      } else {
        pageX = event.pageX;
        pageY = event.pageY;
      }

      window.document.removeEventListener('mousemove', _this.handleDrag);
      window.document.removeEventListener('mouseup', _this.handleDragEnd);
      event.preventDefault();

      _this.props.onDragEnd({
        dX: pageX - _this.state.pageX,
        dY: pageY - _this.state.pageY,
        pageX: pageX,
        pageY: pageY
      }, {
        event: event,
        props: _this.props
      });

      _this.setState({
        pageX: 0,
        pageY: 0
      });
    });

    _defineProperty(_assertThisInitialized(_this), "handleDragCancel", function (event) {
      _this.props.onDragCancel({
        event: event,
        props: _this.props
      });

      _this.setState({
        pageX: 0,
        pageY: 0
      });
    });

    return _this;
  }

  _createClass(DragCaptureZone, [{
    key: "componentDidMount",
    value: function componentDidMount() {
      //add event listeners directly on the DOM element to allow preventDefault
      //calls which are not honored due to react's event delegation
      //reference: https://github.com/facebook/react/issues/8968
      if (this.elementRef.current) {
        this.elementRef.current.addEventListener('touchmove', this.handleDrag);
        this.elementRef.current.addEventListener('touchend', this.handleDragEnd);
        this.elementRef.current.addEventListener('touchcancel', this.handleDragCancel);
      }
    }
  }, {
    key: "componentWillUnmount",
    value: function componentWillUnmount() {
      if (this.elementRef.current) {
        this.elementRef.current.removeEventListener('touchmove', this.handleDrag);
        this.elementRef.current.removeEventListener('touchend', this.handleDragEnd);
        this.elementRef.current.removeEventListener('touchcancel', this.handleDragCancel);
      }

      window.document.removeEventListener('mousemove', this.handleDrag);
      window.document.removeEventListener('mouseup', this.handleDragEnd);
    }
  }, {
    key: "render",
    value: function render() {
      return /*#__PURE__*/React.createElement("div", _extends({}, omitProps(this.props, undefined, _keys(DragCaptureZone.propTypes)), {
        className: cx('&', this.props.className),
        key: "DragCaptureZone",
        onMouseDown: this.handleMouseDragStart,
        onTouchStart: this.handleTouchDragStart,
        ref: this.elementRef
      }));
    }
  }]);

  return DragCaptureZone;
}(React.Component);

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

_defineProperty(DragCaptureZone, "peek", {
  description: "\n\t\t\tThis is a helper component used to capture mouse events to determine\n\t\t\twhen the user starts, is and stops dragging.\n\t\t",
  categories: ['utility']
});

_defineProperty(DragCaptureZone, "propTypes", {
  className: string,
  onDrag: func,
  onDragEnd: func,
  onDragStart: func,
  onDragCancel: func
});

_defineProperty(DragCaptureZone, "defaultProps", {
  onDrag: _noop,
  onDragEnd: _noop,
  onDragStart: _noop,
  onDragCancel: _noop
});

export default DragCaptureZone;