alt/lib/store/index.js

A flux implementation

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createStoreConfig = createStoreConfig;
exports.transformStore = transformStore;
exports.createStoreFromObject = createStoreFromObject;
exports.createStoreFromClass = createStoreFromClass;

var _AltUtils = require('../utils/AltUtils');

var utils = _interopRequireWildcard(_AltUtils);

var _functions = require('../functions');

var fn = _interopRequireWildcard(_functions);

var _AltStore = require('./AltStore');

var _AltStore2 = _interopRequireDefault(_AltStore);

var _StoreMixin = require('./StoreMixin');

var _StoreMixin2 = _interopRequireDefault(_StoreMixin);

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

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj['default'] = obj; return newObj; } }

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 doSetState(store, storeInstance, state) {
  if (!state) {
    return;
  }

  var config = storeInstance.StoreModel.config;


  var nextState = fn.isFunction(state) ? state(storeInstance.state) : state;

  storeInstance.state = config.setState.call(store, storeInstance.state, nextState);

  if (!store.alt.dispatcher.isDispatching()) {
    store.emitChange();
  }
}

function createPrototype(proto, alt, key, extras) {
  return fn.assign(proto, _StoreMixin2['default'], {
    displayName: key,
    alt: alt,
    dispatcher: alt.dispatcher,
    preventDefault: function () {
      function preventDefault() {
        this.getInstance().preventDefault = true;
      }

      return preventDefault;
    }(),

    boundListeners: [],
    lifecycleEvents: {},
    actionListeners: {},
    publicMethods: {},
    handlesOwnErrors: false
  }, extras);
}

function createStoreConfig(globalConfig, StoreModel) {
  StoreModel.config = fn.assign({
    getState: function () {
      function getState(state) {
        if (Array.isArray(state)) {
          return state.slice();
        } else if (fn.isMutableObject(state)) {
          return fn.assign({}, state);
        }

        return state;
      }

      return getState;
    }(),
    setState: function () {
      function setState(currentState, nextState) {
        if (fn.isMutableObject(nextState)) {
          return fn.assign(currentState, nextState);
        }
        return nextState;
      }

      return setState;
    }()
  }, globalConfig, StoreModel.config);
}

function transformStore(transforms, StoreModel) {
  return transforms.reduce(function (Store, transform) {
    return transform(Store);
  }, StoreModel);
}

function createStoreFromObject(alt, StoreModel, key) {
  var storeInstance = void 0;

  var StoreProto = createPrototype({}, alt, key, fn.assign({
    getInstance: function () {
      function getInstance() {
        return storeInstance;
      }

      return getInstance;
    }(),
    setState: function () {
      function setState(nextState) {
        doSetState(this, storeInstance, nextState);
      }

      return setState;
    }()
  }, StoreModel));

  // bind the store listeners
  /* istanbul ignore else */
  if (StoreProto.bindListeners) {
    _StoreMixin2['default'].bindListeners.call(StoreProto, StoreProto.bindListeners);
  }
  /* istanbul ignore else */
  if (StoreProto.observe) {
    _StoreMixin2['default'].bindListeners.call(StoreProto, StoreProto.observe(alt));
  }

  // bind the lifecycle events
  /* istanbul ignore else */
  if (StoreProto.lifecycle) {
    fn.eachObject(function (eventName, event) {
      _StoreMixin2['default'].on.call(StoreProto, eventName, event);
    }, [StoreProto.lifecycle]);
  }

  // create the instance and fn.assign the public methods to the instance
  storeInstance = fn.assign(new _AltStore2['default'](alt, StoreProto, StoreProto.state !== undefined ? StoreProto.state : {}, StoreModel), StoreProto.publicMethods, {
    displayName: key,
    config: StoreModel.config
  });

  return storeInstance;
}

function createStoreFromClass(alt, StoreModel, key) {
  var storeInstance = void 0;
  var config = StoreModel.config;

  // Creating a class here so we don't overload the provided store's
  // prototype with the mixin behaviour and I'm extending from StoreModel
  // so we can inherit any extensions from the provided store.

  var Store = function (_StoreModel) {
    _inherits(Store, _StoreModel);

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

      for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
        args[_key2] = arguments[_key2];
      }

      return _possibleConstructorReturn(this, _StoreModel.call.apply(_StoreModel, [this].concat(args)));
    }

    return Store;
  }(StoreModel);

  createPrototype(Store.prototype, alt, key, {
    type: 'AltStore',
    getInstance: function () {
      function getInstance() {
        return storeInstance;
      }

      return getInstance;
    }(),
    setState: function () {
      function setState(nextState) {
        doSetState(this, storeInstance, nextState);
      }

      return setState;
    }()
  });

  for (var _len = arguments.length, argsForClass = Array(_len > 3 ? _len - 3 : 0), _key = 3; _key < _len; _key++) {
    argsForClass[_key - 3] = arguments[_key];
  }

  var store = new (Function.prototype.bind.apply(Store, [null].concat(argsForClass)))();

  /* istanbul ignore next */
  if (config.bindListeners) store.bindListeners(config.bindListeners);
  /* istanbul ignore next */
  if (config.datasource) store.registerAsync(config.datasource);

  storeInstance = fn.assign(new _AltStore2['default'](alt, store, store.state !== undefined ? store.state : store, StoreModel), utils.getInternalMethods(StoreModel), config.publicMethods, { displayName: key });

  return storeInstance;
}