react-redux-pledge/lib/withPledges.js

Enhance your connected component by rendering them only when their props are guaranteed

'use strict';

exports.__esModule = 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 _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _reactRedux = require('react-redux');

var _createEagerFactory = require('recompose/createEagerFactory');

var _createEagerFactory2 = _interopRequireDefault(_createEagerFactory);

var _renderComponent = require('recompose/renderComponent');

var _renderComponent2 = _interopRequireDefault(_renderComponent);

var _shallowEqual = require('recompose/shallowEqual');

var _shallowEqual2 = _interopRequireDefault(_shallowEqual);

var _lodash = require('lodash');

var _createPledgeAction = require('./createPledgeAction');

var _createPledgeAction2 = _interopRequireDefault(_createPledgeAction);

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; }

var withPledges = function withPledges(pledges, loading) {
    return function (BaseComponent) {

        var resolvingPledges = [];

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

            function PledgeContainer(props, context) {
                _classCallCheck(this, PledgeContainer);

                return _possibleConstructorReturn(this, _React$Component.call(this, props, context));
            }

            PledgeContainer.prototype.handlePledges = function handlePledges(props) {
                if (resolvingPledges.length == 0) {
                    this.componentFactory = this.componentFactory || (0, _createEagerFactory2["default"])(BaseComponent);
                    this.factory = this.componentFactory;
                } else {
                    this.loadingFactory = this.loadingFactory || (0, _createEagerFactory2["default"])((0, _renderComponent2["default"])(loading)(BaseComponent));
                    this.factory = this.loadingFactory;
                    if (props.needResolving) {
                        props.resolvePledges();
                    }
                }
            };

            PledgeContainer.prototype.componentWillMount = function componentWillMount() {
                this.handlePledges(this.props);
            };

            PledgeContainer.prototype.componentWillReceiveProps = function componentWillReceiveProps(nextProps) {
                this.handlePledges(nextProps);
            };

            PledgeContainer.prototype.render = function render() {
                return this.factory(this.props);
            };

            return PledgeContainer;
        }(_react2["default"].Component);

        PledgeContainer.contextTypes = {
            store: _react2["default"].PropTypes.object
        };
        PledgeContainer.propTypes = {
            store: _react2["default"].PropTypes.object
        };

        return (0, _reactRedux.connect)(function (_, initialProps) {
            return function (state) {
                var pledgesToResolve = [];
                for (var _iterator = pledges, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
                    var _ref;

                    if (_isArray) {
                        if (_i >= _iterator.length) break;
                        _ref = _iterator[_i++];
                    } else {
                        _i = _iterator.next();
                        if (_i.done) break;
                        _ref = _i.value;
                    }

                    var pledgesArray = _ref;

                    if (pledgesToResolve.length == 0) {
                        for (var _iterator2 = pledgesArray, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) {
                            var _ref2;

                            if (_isArray2) {
                                if (_i2 >= _iterator2.length) break;
                                _ref2 = _iterator2[_i2++];
                            } else {
                                _i2 = _iterator2.next();
                                if (_i2.done) break;
                                _ref2 = _i2.value;
                            }

                            var pledge = _ref2;

                            pledge = typeof pledge === "function" ? pledge(state, initialProps) : pledge;
                            if (!pledge.isResolved(state)) {
                                pledgesToResolve.push(pledge);
                            }
                        }
                    }
                }
                return { pledgesToResolve: pledgesToResolve };
            };
        }, null, function (stateProps, dispatchProps, ownProps) {
            var dispatch = dispatchProps.dispatch;
            var pledgesToResolve = stateProps.pledgesToResolve;

            if (pledgesToResolve.length == 0) {
                resolvingPledges = [];
                return _extends({}, ownProps, stateProps, dispatchProps);
            }
            var actions = [];
            /*
                1): all pledges to resolve not already resolving need to be added to
                    the resolvingPledges array and their action to be pushed to the
                    actions array
                2): resolving pledges that are not in pledgesToResolve anymore need
                    to be removed from resolvingPledges array.
            */

            var _loop = function _loop() {
                if (_isArray3) {
                    if (_i3 >= _iterator3.length) return 'break';
                    _ref3 = _iterator3[_i3++];
                } else {
                    _i3 = _iterator3.next();
                    if (_i3.done) return 'break';
                    _ref3 = _i3.value;
                }

                var pledge = _ref3;

                if (typeof (0, _lodash.find)(resolvingPledges, function (name) {
                    return name === pledge.name;
                }) === "undefined") {
                    resolvingPledges.push(pledge.name);
                    actions.push(pledge.getAction());
                }
            };

            for (var _iterator3 = pledgesToResolve, _isArray3 = Array.isArray(_iterator3), _i3 = 0, _iterator3 = _isArray3 ? _iterator3 : _iterator3[Symbol.iterator]();;) {
                var _ref3;

                var _ret = _loop();

                if (_ret === 'break') break;
            }

            resolvingPledges = resolvingPledges.filter(function (name) {
                return (0, _lodash.includes)(pledgesToResolve.map(function (p) {
                    return p.name;
                }), name);
            });
            return _extends({}, ownProps, stateProps, dispatchProps, {
                needResolving: actions.length > 0,
                resolvePledges: function resolvePledges() {
                    dispatch((0, _createPledgeAction2["default"])(actions));
                }
            });
        })(PledgeContainer);
    };
};

exports["default"] = withPledges;