immreact/lib/component.js

Use react classes with an immstruct structure

'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});

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 _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _state2 = require('./state');

var _state3 = _interopRequireDefault(_state2);

var _constants = require('./constants');

var _constants2 = _interopRequireDefault(_constants);

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

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; }

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 _state = Symbol('state');
var _id = Symbol('id');

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

    function Component(props) {
        _classCallCheck(this, Component);

        return _possibleConstructorReturn(this, Object.getPrototypeOf(Component).call(this, props));

        // Be lazy, dont create symbols on the object unless required
    }

    _createClass(Component, [{
        key: 'update',
        value: function update(state) {
            // console.log( 'setting state' )
            // console.log( state )

            if (state.id) {
                delete state.id;
            }

            this.cursor.update(function (cursor) {
                return cursor.merge(state);
            });
        }
    }, {
        key: 'cursor',
        set: function set(state) {
            var _this2 = this;

            if (!state) {
                // @TODO should throw
                return console.warn('[Immreact.Component] state unspecified');
            }

            if (!state.id) {
                return console.warn('[Immreact.Component] can not create cursor without id');
            }

            // Only generate stateful container if cursor is defined
            // Id also serves as an indicator of being linked to centralised state
            this[_id] = state.id;

            // Add new stateful container to the components map unless already specified or is forced
            if (state.force || !_state3.default.state.cursor(_constants2.default.COMPONENTS).get(state.id)) {
                _state3.default.state.cursor(_constants2.default.COMPONENTS).update(function (cursor) {
                    // @TODO many components being created at the same time will repeatedly
                    // trigger immstruct swap events, can this be batched? The call to this.update
                    // triggers another swap
                    return cursor.merge(_defineProperty({}, _this2[_id], {}));
                });

                // console.log( 'fresh state using cursor = {...}' )
                this.update(state);
            }
        },
        get: function get() {
            if (!this[_id]) {
                // @TODO should throw?
                return console.warn('[Immreact.Component] component has no cursor set, can not access');
            }

            // Lazily reference the state and cache, update when the reference changes
            // if ( !this[ _state ] ) {
            //     this[ _state ] = appState.state.reference([ CONSTANTS.COMPONENTS, this[ _id ] ] )
            // }

            // Grab a fresh cursor to the referenced data
            return _state3.default.state.cursor([_constants2.default.COMPONENTS, this[_id]]);
        }
    }]);

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

Component.propTypes = {
    cursor: _react2.default.PropTypes.object
};
Component.defaultProps = {
    cursor: null
};
exports.default = Component;