@weareredlight/components/lib/theme/index.js

> TODO: description

"use strict";

function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = exports.useTheme = exports.ThemeProvider = void 0;

var _react = _interopRequireWildcard(require("react"));

var _propTypes = _interopRequireDefault(require("prop-types"));

var _reactNative = require("react-native");

var _merge = _interopRequireDefault(require("lodash/merge"));

var _throttle = _interopRequireDefault(require("lodash/throttle"));

var _utils = require("./utils");

var _defaultTheme = require("./defaultTheme");

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

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _extends() { _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; }; return _extends.apply(this, arguments); }

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 _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

var ThemeContext = (0, _react.createContext)();
var defaultThrottleInterval = 100;

var ThemeProvider = function ThemeProvider(props) {
  var _props$breakPoints = props.breakPoints,
      breakPoints = _props$breakPoints === void 0 ? _defaultTheme.defaultBreakPoints : _props$breakPoints,
      _props$variables = props.variables,
      variables = _props$variables === void 0 ? null : _props$variables,
      _props$themes = props.themes,
      themes = _props$themes === void 0 ? {} : _props$themes,
      _props$components = props.components,
      components = _props$components === void 0 ? {} : _props$components,
      _props$mixins = props.mixins,
      mixins = _props$mixins === void 0 ? {} : _props$mixins; // theme and selected theme

  var _useState = (0, _react.useState)(_defaultTheme.defaultThemeName),
      _useState2 = _slicedToArray(_useState, 2),
      selectedTheme = _useState2[0],
      setSelectedTheme = _useState2[1];

  var _useState3 = (0, _react.useState)((0, _utils.themeBuilder)(_defaultTheme.defaultThemeTemplate, _defaultTheme.defaultThemeName, selectedTheme, breakPoints, variables, themes, components, mixins)),
      _useState4 = _slicedToArray(_useState3, 2),
      theme = _useState4[0],
      setTheme = _useState4[1]; // update theme


  var updateTheme = (0, _react.useCallback)(function (update) {
    setTheme(function (theme) {
      return (0, _merge["default"])({}, theme, update);
    });
  }, [setTheme]); // update theme throttled

  var updateThemeThrottled = (0, _react.useRef)((0, _throttle["default"])(function (update) {
    return updateTheme(update);
  }, defaultThrottleInterval)).current; // on resize

  (0, _react.useEffect)(function () {
    var updateDimensions = function updateDimensions(r) {
      return updateThemeThrottled((0, _utils.buildScreen)(r, breakPoints));
    };

    _reactNative.Dimensions.addEventListener('change', updateDimensions);

    return function () {
      return _reactNative.Dimensions.removeEventListener('change', updateDimensions);
    };
  }, [updateThemeThrottled, breakPoints]); // context creator a.k.a. theme parser

  var themeContext = (0, _react.useMemo)(function () {
    var parsedTheme = (0, _utils.themeParser)(theme, selectedTheme);
    return {
      theme: parsedTheme,
      selectedTheme: selectedTheme,
      // return a component styles object
      getStyles: function getStyles(compName) {
        return parsedTheme.components[compName];
      },
      // merges an array of style objects into a final object
      // we can change this function later and keep compatibility
      mergeStyles: function mergeStyles(stylesList) {
        return (0, _utils.mergeStyles)(stylesList);
      },
      // merge component specific styles with the already calculated component styles
      mergeWithComponentStyles: function mergeWithComponentStyles(compName, style) {
        return (0, _utils.mergeWithComponentStyles)(parsedTheme, compName, parsedTheme.components[compName], style);
      },
      // change theme
      setTheme: function setTheme(themeName) {
        return Object.keys(parsedTheme.themes).includes(themeName) && setSelectedTheme(themeName);
      },
      // change var in current theme
      setVar: function setVar(varName, val) {
        return updateTheme({
          themes: _defineProperty({}, selectedTheme, _defineProperty({}, varName, val))
        });
      },
      // change var in default theme or themeName
      setVarOnTheme: function setVarOnTheme(themeName, varName, val) {
        return updateTheme({
          themes: _defineProperty({}, themeName || _defaultTheme.defaultThemeName, _defineProperty({}, varName, val))
        });
      }
    };
  }, [theme, selectedTheme, updateTheme]);
  return /*#__PURE__*/_react["default"].createElement(ThemeContext.Provider, _extends({
    value: themeContext
  }, props));
};

exports.ThemeProvider = ThemeProvider;
ThemeProvider.propTypes = {
  breakPoints: _propTypes["default"].arrayOf([_propTypes["default"].number]),
  variables: _propTypes["default"].shape(),
  themes: _propTypes["default"].shape(),
  components: _propTypes["default"].shape(),
  mixins: _propTypes["default"].shape()
};

var useTheme = function useTheme() {
  var themeContext = (0, _react.useContext)(ThemeContext);

  if (!themeContext) {
    throw new Error('Clients of useTheme must be wrapped inside a <ThemeProvider />');
  }

  return themeContext;
};

exports.useTheme = useTheme;
var _default = ThemeProvider;
exports["default"] = _default;