hzql/index.js

Easy querying for Horizon and React

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.connect = exports.Provider = undefined;

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 _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _serialization = require('@horizon/client/lib/serialization');

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 Provider = exports.Provider = function (_Component) {
  _inherits(Provider, _Component);

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

    var _this = _possibleConstructorReturn(this, Object.getPrototypeOf(Provider).call(this, props));

    _this.props.horizon.$$__hzql_cache = _this.props.cache ? (0, _serialization.deserialize)(_this.props.cache) : {};
    _this.props.horizon.$$__hzql_cache_string = '';
    return _this;
  }

  _createClass(Provider, [{
    key: 'getChildContext',
    value: function getChildContext() {
      return {
        horizon: this.props.horizon,
        Fiber: this.props.fiber || false
      };
    }
  }, {
    key: 'render',
    value: function render() {
      return _react2.default.Children.only(this.props.children);
    }
  }]);

  return Provider;
}(_react.Component);

Provider.childContextTypes = {
  horizon: _react2.default.PropTypes.any,
  Fiber: _react2.default.PropTypes.any
};

var nextVersion = 0;

var connect = exports.connect = function connect(query, shouldWait, isLive) {
  return function (Consumer) {
    var version = nextVersion++;

    var Connection = function (_Component2) {
      _inherits(Connection, _Component2);

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

        var _this2 = _possibleConstructorReturn(this, Object.getPrototypeOf(Connection).call(this, props, context));

        _this2.state = { results: null };
        _this2.version = version;
        _this2.subscription = undefined;
        return _this2;
      }

      _createClass(Connection, [{
        key: 'componentWillMount',
        value: function componentWillMount() {
          var _this3 = this;

          if (!query) return;

          var q = this.context.horizon.model(query(this.context.horizon))(this.props);

          var queryString = q.toString();

          if (this.context.horizon.$$__hzql_cache[queryString]) {
            this.setState({ results: this.context.horizon.$$__hzql_cache[queryString] });
          }

          if (isLive) {
            q = q.watch();
          } else {
            q = q.fetch();
          }

          var fiber = void 0;

          var sub = q.subscribe(function (results) {
            _this3.setState({ results: results });

            if (_this3.context.Fiber) {
              _this3.context.horizon.$$__hzql_cache[queryString] = results;
              _this3.context.horizon.$$__hzql_cache_string = (0, _serialization.serialize)(_this3.context.horizon.$$__hzql_cache);

              fiber.run();
            }
          });

          this.subscription = sub;

          if (this.context.Fiber) {
            fiber = this.context.Fiber.current;
            this.context.Fiber.yield();
          }
        }
      }, {
        key: 'componentWillUnmount',
        value: function componentWillUnmount() {
          if (!query) return;

          this.subscription.unsubscribe();
        }
      }, {
        key: 'render',
        value: function render() {
          return shouldWait && !this.state.results ? null : _react2.default.createElement(Consumer, _extends({}, this.state.results, this.props, { horizon: this.context.horizon }));
        }
      }]);

      return Connection;
    }(_react.Component);

    if (process.env.NODE_ENV !== 'production') {
      Connection.prototype.componentWillUpdate = function componentWillUpdate() {
        var _this4 = this;

        if (!query) return;
        if (this.version == version) return;

        this.version = version;
        var q = this.context.horizon.model(query(this.context.horizon))(this.props);

        if (isLive) {
          q = q.watch();
        } else {
          q = q.fetch();
        }

        q.subscribe(function (results) {
          return _this4.setState({ results: results });
        });
      };
    }

    Connection.contextTypes = {
      horizon: _react2.default.PropTypes.any,
      Fiber: _react2.default.PropTypes.any
    };

    return Connection;
  };
};

connect.live = function (query) {
  return connect(query, false, true);
};
connect.await = function (query) {
  return connect(query, true, false);
};
connect.liveAwait = function (query) {
  return connect(query, true, true);
};