react-native/Libraries/Components/SafeAreaView/SafeAreaView.js

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow strict-local
 * @format
 */

import Platform from '../../Utilities/Platform';
import * as React from 'react';
import View from '../View/View';

import type {HostComponent} from '../../Renderer/shims/ReactNativeTypes';
import type {ViewProps} from '../View/ViewPropTypes';

type Props = $ReadOnly<{|
  ...ViewProps,
  emulateUnlessSupported?: boolean,
|}>;

let exported: React.AbstractComponent<
  Props,
  React.ElementRef<HostComponent<mixed>>,
>;

/**
 * Renders nested content and automatically applies paddings reflect the portion
 * of the view that is not covered by navigation bars, tab bars, toolbars, and
 * other ancestor views.
 *
 * Moreover, and most importantly, Safe Area's paddings reflect physical
 * limitation of the screen, such as rounded corners or camera notches (aka
 * sensor housing area on iPhone X).
 */
if (Platform.OS === 'android') {
  exported = React.forwardRef<Props, React.ElementRef<HostComponent<mixed>>>(
    function SafeAreaView(props, forwardedRef) {
      const {emulateUnlessSupported, ...localProps} = props;
      return <View {...localProps} ref={forwardedRef} />;
    },
  );
} else {
  const RCTSafeAreaViewNativeComponent = require('./RCTSafeAreaViewNativeComponent')
    .default;

  exported = React.forwardRef<Props, React.ElementRef<HostComponent<mixed>>>(
    function SafeAreaView(props, forwardedRef) {
      return (
        <RCTSafeAreaViewNativeComponent
          emulateUnlessSupported={true}
          {...props}
          ref={forwardedRef}
        />
      );
    },
  );
}

export default exported;