react-aim/lib/source.js

Determine the cursor aim for triggering mouse events.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: 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 _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

exports.default = function (target) {
  var spec = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;

  if (spec === null && (typeof target === 'undefined' ? 'undefined' : _typeof(target)) === 'object') {
    spec = target;
    target = null;
  }

  return function (WrappedComponent) {
    var _class, _temp;

    return _temp = _class = function (_Component) {
      _inherits(_class, _Component);

      _createClass(_class, [{
        key: 'getChildContext',
        value: function getChildContext() {
          return {
            source: this
          };
        }
      }]);

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

        var _this = _possibleConstructorReturn(this, (_class.__proto__ || Object.getPrototypeOf(_class)).call(this));

        _this._isOver = false;
        _this._isMounted = false;
        _this.childrenTargets = [];

        _this.buffer = function (e, cb) {
          var timeout = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;

          setTimeout(function () {
            return cb(e);
          }, timeout);
        };

        _this.bufferHandleMouseMove = function (e) {
          return _this.buffer(e, _this.handleMouseMove);
        };

        _this.bufferHandleMouseOut = function (e) {
          return _this.buffer(e, _this.handleMouseOut);
        };

        _this.handleMouseOut = function (e) {
          if (!_this._isMounted) return _this.unbindEvents();
          if (e.toElement == null && e.relatedTarget == null) {
            _this.handleMouseLeave(e);
          } else {
            _this.handleMouseMove(e);
          }
        };

        _this.handleMouseMove = function (e) {
          if (!_this._isMounted) return _this.unbindEvents();
          if (_monitor2.default.mouseOver(e, _this)) _this.handleMouseEnter(e);else _this.handleMouseLeave(e);
        };

        _this.handleMouseEnter = function () {
          if (!_this._isOver) {
            _monitor2.default.requestMouseEnter(_this).then(function () {
              _this.forceMouseEnter();
            }).catch(function () {
              return null;
            });
          }
        };

        _this.forceMouseEnter = function () {
          _this._isOver = true;
          _this.triggerMouseEnter();
          _this.trackMouseLeave();
        };

        _this.handleMouseLeave = function () {
          if (_this._isOver) {
            _monitor2.default.requestMouseLeave(_this).then(function () {
              return _this.forceMouseLeave();
            }).catch(function () {
              return null;
            });
          }
        };

        _this.forceMouseLeave = function () {
          if (_this._isOver) {
            _this._isOver = false;
            _this.triggerMouseLeave();
            _this.untrackMouseLeave();
          }
        };

        _this._target = target;
        _this.spec = spec;
        return _this;
      }

      _createClass(_class, [{
        key: 'isOver',
        value: function isOver() {
          return this._isOver;
        }
      }, {
        key: 'hasChildrenOver',
        value: function hasChildrenOver() {
          var target = this.target;
          if (target && (target.isOver() || target.hasChildrenOver())) return true;
          for (var i = 0, len = this.childrenTargets.length; i < len; ++i) {
            if (this.childrenTargets[i].isOver() || this.childrenTargets[i].hasChildrenOver()) return true;
          }
          return false;
        }
      }, {
        key: 'hasChildrenAimed',
        value: function hasChildrenAimed() {
          var target = this.target;
          if (target && (target.isAimed() || target.hasChildrenAimed())) return true;
          for (var i = 0, len = this.childrenTargets.length; i < len; ++i) {
            if (this.childrenTargets[i].isAimed() || this.childrenTargets[i].hasChildrenAimed()) return true;
          }
          return false;
        }
      }, {
        key: 'addChildrenTarget',
        value: function addChildrenTarget(target) {
          this.childrenTargets.push(target);
        }
      }, {
        key: 'removeChildrenTarget',
        value: function removeChildrenTarget(target) {
          this.childrenTargets = this.childrenTargets.filter(function (item) {
            return item !== target;
          });
        }
      }, {
        key: 'componentDidMount',
        value: function componentDidMount() {
          if (this.context.target) {
            this.context.target.addChildrenSource(this);
          }

          this._isMounted = true;
          var element = _reactDom2.default.findDOMNode(this);
          element.addEventListener('mousemove', this.bufferHandleMouseMove);
        }
      }, {
        key: 'componentWillUnmount',
        value: function componentWillUnmount() {
          if (this.context.target) {
            this.context.target.removeChildrenSource(this);
          }

          this.unbindEvents();
          this._isMounted = false;
        }
      }, {
        key: 'unbindEvents',
        value: function unbindEvents() {
          if (this._isMounted) {
            var element = _reactDom2.default.findDOMNode(this);
            element.removeEventListener('mousemove', this.bufferHandleMouseMove);
          }
          document.removeEventListener('mousemove', this.bufferHandleMouseMove);
          document.removeEventListener('mouseout', this.bufferHandleMouseOut);
        }
      }, {
        key: 'trackMouseLeave',
        value: function trackMouseLeave() {
          var element = _reactDom2.default.findDOMNode(this);
          document.addEventListener('mousemove', this.bufferHandleMouseMove);
          document.addEventListener('mouseout', this.bufferHandleMouseOut);
          element.removeEventListener('mousemove', this.bufferHandleMouseMove);
        }
      }, {
        key: 'untrackMouseLeave',
        value: function untrackMouseLeave() {
          var element = _reactDom2.default.findDOMNode(this);
          document.removeEventListener('mousemove', this.bufferHandleMouseMove);
          document.removeEventListener('mouseout', this.bufferHandleMouseOut);
          element.addEventListener('mousemove', this.bufferHandleMouseMove);
        }
      }, {
        key: 'triggerMouseEnter',
        value: function triggerMouseEnter() {
          if (_typeof(this.spec) === 'object' && this.spec && typeof this.spec.mouseEnter === 'function') {
            this.spec.mouseEnter(this.wrappedComponent.props, this.wrappedComponent);
          }
        }
      }, {
        key: 'triggerMouseLeave',
        value: function triggerMouseLeave() {
          if (_typeof(this.spec) === 'object' && this.spec && typeof this.spec.mouseLeave === 'function') {
            this.spec.mouseLeave(this.wrappedComponent.props, this.wrappedComponent);
          }
        }
      }, {
        key: 'render',
        value: function render() {
          var _this2 = this;

          return _react2.default.createElement(WrappedComponent, _extends({ ref: function ref(_ref) {
              return _this2.wrappedComponent = _ref;
            } }, this.props));
        }
      }, {
        key: 'target',
        get: function get() {
          if (typeof this._target === 'function' && this.wrappedComponent) return this._target(this.wrappedComponent.props, this.wrappedComponent);
          return null;
        }
      }]);

      return _class;
    }(_react.Component), _class.childContextTypes = {
      source: _propTypes2.default.object
    }, _class.contextTypes = {
      target: _propTypes2.default.object
    }, _temp;
  };
};

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _propTypes = require('prop-types');

var _propTypes2 = _interopRequireDefault(_propTypes);

var _reactDom = require('react-dom');

var _reactDom2 = _interopRequireDefault(_reactDom);

var _monitor = require('./monitor');

var _monitor2 = _interopRequireDefault(_monitor);

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; }