@elastic/eui
Version:
Elastic UI Component Library
116 lines (107 loc) • 6.18 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
var _typeof = require("@babel/runtime/helpers/typeof");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.withEuiStylesMemoizer = exports.useEuiMemoizedStyles = exports.RenderWithEuiStylesMemoizer = exports.EuiThemeMemoizedStylesProvider = exports.EuiThemeMemoizedStylesContext = void 0;
var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));
var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));
var _react = _interopRequireWildcard(require("react"));
var _hooks = require("../hooks");
var _hooks2 = require("./hooks");
var _warning = require("./warning");
var _react2 = require("@emotion/react");
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(e) { return e ? t : r; })(e); }
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != _typeof(e) && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
// Typically an object of serialized css`` styles, but can have any amount of nesting, so it's not worth it to try and strictly type this
var EuiThemeMemoizedStylesContext = exports.EuiThemeMemoizedStylesContext = /*#__PURE__*/(0, _react.createContext)(new WeakMap());
var EuiThemeMemoizedStylesProvider = exports.EuiThemeMemoizedStylesProvider = function EuiThemeMemoizedStylesProvider(_ref) {
var children = _ref.children;
// Note: we *should not* use `useMemo` instead of `useState` here, as useMemo is not guaranteed
// and its cache can get thrown away by React (https://react.dev/reference/react/useMemo#caveats)
var _useState = (0, _react.useState)(new WeakMap()),
_useState2 = (0, _slicedToArray2.default)(_useState, 2),
componentStyles = _useState2[0],
rerenderStyles = _useState2[1];
// On theme update, wipe the map, which causes the below hook to recompute all styles
var _useEuiTheme = (0, _hooks2.useEuiTheme)(),
euiTheme = _useEuiTheme.euiTheme;
(0, _hooks.useUpdateEffect)(function () {
rerenderStyles(new WeakMap());
}, [euiTheme]);
return (0, _react2.jsx)(EuiThemeMemoizedStylesContext.Provider, {
value: componentStyles
}, children);
};
/**
* Internal util primarily responsible for getting the memoized styles (if they exist)
* and if not, generating and setting the styles. DRYed out to facilitate usage
* between both hook/function components and HOC/class components
*/
var getMemoizedStyles = function getMemoizedStyles(stylesGenerator, stylesMap, euiThemeContext) {
if (!stylesGenerator.name) {
(0, _warning.emitEuiProviderWarning)('Styles are memoized per function. Your style functions must be statically defined in order to not create a new map entry every rerender.');
}
var existingStyles = stylesMap.get(stylesGenerator);
if (existingStyles) {
return existingStyles;
} else {
var generatedStyles = stylesGenerator(euiThemeContext);
stylesMap.set(stylesGenerator, generatedStyles);
return generatedStyles;
}
};
/**
* Hook that memoizes the returned values of components style fns/generators
* per-theme
*/
var useEuiMemoizedStyles = exports.useEuiMemoizedStyles = function useEuiMemoizedStyles(stylesGenerator) {
var memoizedStyles = (0, _react.useContext)(EuiThemeMemoizedStylesContext);
var euiThemeContext = (0, _hooks2.useEuiTheme)();
var memoizedComponentStyles = (0, _react.useMemo)(function () {
return getMemoizedStyles(stylesGenerator, memoizedStyles, euiThemeContext);
}, [stylesGenerator, memoizedStyles, euiThemeContext]);
return memoizedComponentStyles;
};
/**
* HOC for class components
* Syntax is mostly copied from withEuiTheme HOC
*/
var withEuiStylesMemoizer = exports.withEuiStylesMemoizer = function withEuiStylesMemoizer(Component) {
var componentName = Component.displayName || Component.name || 'ComponentWithStylesMemoizer';
var Render = function Render(props, ref) {
var memoizedStyles = (0, _react.useContext)(EuiThemeMemoizedStylesContext);
var euiThemeContext = (0, _hooks2.useEuiTheme)();
var stylesMemoizer = (0, _react.useCallback)(function (stylesGenerator) {
return getMemoizedStyles(stylesGenerator, memoizedStyles, euiThemeContext);
}, [memoizedStyles, euiThemeContext]);
return (0, _react2.jsx)(Component, (0, _extends2.default)({
stylesMemoizer: stylesMemoizer,
ref: ref
}, props));
};
var WithEuiStylesMemoizer = /*#__PURE__*/(0, _react.forwardRef)(Render);
WithEuiStylesMemoizer.displayName = componentName;
return WithEuiStylesMemoizer;
};
/**
* Render prop alternative for complex class components
* Most useful for scenarios where a HOC may interfere with typing
*/
var RenderWithEuiStylesMemoizer = exports.RenderWithEuiStylesMemoizer = function RenderWithEuiStylesMemoizer(_ref2) {
var children = _ref2.children;
var memoizedStyles = (0, _react.useContext)(EuiThemeMemoizedStylesContext);
var euiThemeContext = (0, _hooks2.useEuiTheme)();
var stylesMemoizer = (0, _react.useCallback)(function (stylesGenerator) {
return getMemoizedStyles(stylesGenerator, memoizedStyles, euiThemeContext);
}, [memoizedStyles, euiThemeContext]);
return children(stylesMemoizer);
};