react-freezer-js/lib/hoc.js

Mandatory context-based helpers for freezer-js and react.

'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; }; }();

exports.cool = cool;
exports.warmUp = warmUp;

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _freezerJs = require('freezer-js');

var _freezerJs2 = _interopRequireDefault(_freezerJs);

var _state = require('./state');

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

function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

function _toArray(arr) { return Array.isArray(arr) ? arr : Array.from(arr); }

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; }

function getComponentName(Component) {
  return Component.name || Component.displayName || 'Component';
}

function cool(Component, fridge) {
  if (!fridge instanceof _freezerJs2.default) {
    throw new Error('That\'s not a suitable fridge: ' + fridge);
  }

  var CooledComponent = function (_React$Component) {
    _inherits(CooledComponent, _React$Component);

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

      return _possibleConstructorReturn(this, Object.getPrototypeOf(CooledComponent).apply(this, arguments));
    }

    _createClass(CooledComponent, [{
      key: 'getChildContext',

      // Handling child context
      value: function getChildContext() {
        return {
          fridge: fridge,
          dispatch: function dispatch() {
            return fridge.trigger.apply(fridge, arguments);
          }
        };
      }

      // Render shim

    }, {
      key: 'render',
      value: function render() {
        return _react2.default.createElement(Component, this.props);
      }
    }, {
      key: 'componentDidMount',
      value: function componentDidMount() {
        var _this2 = this;

        // Here the magic happens. Everytime that the
        // state is updated the app will re-render.
        // A real data driven app.
        fridge.on('update', function () {
          return _this2.forceUpdate();
        });
      }
    }]);

    return CooledComponent;
  }(_react2.default.Component);

  CooledComponent.childContextTypes = {
    fridge: _state.isFridge,
    dispatch: _react2.default.PropTypes.func.isRequired
  };

  CooledComponent.displayName = 'Cooled' + getComponentName(Component);

  return CooledComponent;
}

function pick(state) {
  return function fridgePicker(path) {
    var v = state;
    var _iteratorNormalCompletion = true;
    var _didIteratorError = false;
    var _iteratorError = undefined;

    try {
      for (var _iterator = path[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
        var p = _step.value;
        v = v[p];
      }
    } catch (err) {
      _didIteratorError = true;
      _iteratorError = err;
    } finally {
      try {
        if (!_iteratorNormalCompletion && _iterator.return) {
          _iterator.return();
        }
      } finally {
        if (_didIteratorError) {
          throw _iteratorError;
        }
      }
    }

    return v;
  };
}

var getPropsFromState = function getPropsFromState(fridge, propPaths) {
  var state = pick(fridge.get());
  return propPaths.reduce(function (props, _ref) {
    var _ref2 = _toArray(_ref);

    var name = _ref2[0];

    var p = _ref2.slice(1);

    if (name[0] === '@') {
      props[name.slice(1)] = function () {
        for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
          args[_key] = arguments[_key];
        }

        return fridge.trigger.apply(fridge, _toConsumableArray(p.concat(args)));
      };
    } else if (p.length === 1 && typeof p[0] === 'function') {
      props[name] = function () {
        for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
          args[_key2] = arguments[_key2];
        }

        return (0, _state.morph)(fridge, function (state) {
          return p[0].apply(this, args.concat([state]));
        });
      };
    } else {
      props[name] = state(p);
    }
    return props;
  }, {});
};

function warmUp(Component, propPaths) {
  var WarmedUpComponent = function (_React$Component2) {
    _inherits(WarmedUpComponent, _React$Component2);

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

      return _possibleConstructorReturn(this, Object.getPrototypeOf(WarmedUpComponent).apply(this, arguments));
    }

    _createClass(WarmedUpComponent, [{
      key: 'render',
      value: function render() {
        var stateProps = getPropsFromState(this.context.fridge, propPaths);
        return _react2.default.createElement(Component, _extends({}, this.props, stateProps));
      }
    }]);

    return WarmedUpComponent;
  }(_react2.default.Component);

  WarmedUpComponent.contextTypes = {
    fridge: _state.isFridge,
    dispatch: _react2.default.PropTypes.func.isRequired
  };

  WarmedUpComponent.displayName = 'WarmedUp' + getComponentName(Component);

  return WarmedUpComponent;
}