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

78 lines
2.0 KiB
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @flow
*/
'use strict';
const Platform = require('Platform');
const React = require('React');
const ReactNativeStyleAttributes = require('ReactNativeStyleAttributes');
const TextAncestor = require('TextAncestor');
const ViewPropTypes = require('ViewPropTypes');
const invariant = require('fbjs/lib/invariant');
const requireNativeComponent = require('requireNativeComponent');
import type {NativeComponent} from 'ReactNative';
import type {ViewProps} from 'ViewPropTypes';
export type Props = ViewProps;
/**
* The most fundamental component for building a UI, View is a container that
* supports layout with flexbox, style, some touch handling, and accessibility
* controls.
*
* @see http://facebook.github.io/react-native/docs/view.html
*/
const RCTView = requireNativeComponent(
'RCTView',
{
propTypes: ViewPropTypes,
},
{
nativeOnly: {
nativeBackgroundAndroid: true,
nativeForegroundAndroid: true,
},
},
);
if (__DEV__) {
const UIManager = require('UIManager');
const viewConfig =
(UIManager.viewConfigs && UIManager.viewConfigs.RCTView) || {};
for (const prop in viewConfig.nativeProps) {
if (!ViewPropTypes[prop] && !ReactNativeStyleAttributes[prop]) {
throw new Error(
'View is missing propType for native prop `' + prop + '`',
);
}
}
}
let ViewToExport = RCTView;
if (__DEV__) {
// $FlowFixMe - TODO T29156721 `React.forwardRef` is not defined in Flow, yet.
ViewToExport = React.forwardRef((props, ref) => (
<TextAncestor.Consumer>
{hasTextAncestor => {
invariant(
!hasTextAncestor,
'Nesting of <View> within <Text> is not currently supported.',
);
return <RCTView {...props} ref={ref} />;
}}
</TextAncestor.Consumer>
));
ViewToExport.displayName = 'View';
}
module.exports = ((ViewToExport: any): Class<NativeComponent<ViewProps>>);