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Modal.js
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Modal.js
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/**
* 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.
*
* @format
* @flow
*/
'use strict';
const AppContainer = require('../ReactNative/AppContainer');
const I18nManager = require('../ReactNative/I18nManager');
const PropTypes = require('prop-types');
const React = require('react');
const ScrollView = require('../Components/ScrollView/ScrollView');
const StyleSheet = require('../StyleSheet/StyleSheet');
const View = require('../Components/View/View');
import type {ViewProps} from '../Components/View/ViewPropTypes';
import type {DirectEventHandler} from '../Types/CodegenTypes';
import type EmitterSubscription from '../vendor/emitter/EmitterSubscription';
import RCTModalHostView from './RCTModalHostViewNativeComponent';
/**
* The Modal component is a simple way to present content above an enclosing view.
*
* See https://facebook.github.io/react-native/docs/modal.html
*/
// In order to route onDismiss callbacks, we need to uniquely identifier each
// <Modal> on screen. There can be different ones, either nested or as siblings.
// We cannot pass the onDismiss callback to native as the view will be
// destroyed before the callback is fired.
let uniqueModalIdentifier = 0;
type OrientationChangeEvent = $ReadOnly<{|
orientation: 'portrait' | 'landscape',
|}>;
export type Props = $ReadOnly<{|
...ViewProps,
/**
* The `animationType` prop controls how the modal animates.
*
* See https://facebook.github.io/react-native/docs/modal.html#animationtype
*/
animationType?: ?('none' | 'slide' | 'fade'),
/**
* The `presentationStyle` prop controls how the modal appears.
*
* See https://facebook.github.io/react-native/docs/modal.html#presentationstyle
*/
presentationStyle?: ?(
| 'fullScreen'
| 'pageSheet'
| 'formSheet'
| 'overFullScreen'
),
/**
* The `transparent` prop determines whether your modal will fill the
* entire view.
*
* See https://facebook.github.io/react-native/docs/modal.html#transparent
*/
transparent?: ?boolean,
/**
* The `statusBarTranslucent` prop determines whether your modal should go under
* the system statusbar.
*
* See https://facebook.github.io/react-native/docs/modal.html#transparent
*/
statusBarTranslucent?: ?boolean,
/**
* The `hardwareAccelerated` prop controls whether to force hardware
* acceleration for the underlying window.
*
* This prop works inly on Android.
*
* See https://facebook.github.io/react-native/docs/modal.html#hardwareaccelerated
*/
hardwareAccelerated?: ?boolean,
/**
* The `visible` prop determines whether your modal is visible.
*
* See https://facebook.github.io/react-native/docs/modal.html#visible
*/
visible?: ?boolean,
/**
* The `onRequestClose` callback is called when the user taps the hardware
* back button on Android or the menu button on Apple TV.
*
* This is required on Apple TV and Android.
*
* See https://facebook.github.io/react-native/docs/modal.html#onrequestclose
*/
onRequestClose?: ?DirectEventHandler<null>,
/**
* The `onShow` prop allows passing a function that will be called once the
* modal has been shown.
*
* See https://facebook.github.io/react-native/docs/modal.html#onshow
*/
onShow?: ?DirectEventHandler<null>,
/**
* The `onDismiss` prop allows passing a function that will be called once
* the modal has been dismissed.
*
* See https://facebook.github.io/react-native/docs/modal.html#ondismiss
*/
onDismiss?: ?() => mixed,
/**
* Deprecated. Use the `animationType` prop instead.
*/
animated?: ?boolean,
/**
* The `supportedOrientations` prop allows the modal to be rotated to any of the specified orientations.
*
* See https://facebook.github.io/react-native/docs/modal.html#supportedorientations
*/
supportedOrientations?: ?$ReadOnlyArray<
| 'portrait'
| 'portrait-upside-down'
| 'landscape'
| 'landscape-left'
| 'landscape-right',
>,
/**
* The `onOrientationChange` callback is called when the orientation changes while the modal is being displayed.
*
* See https://facebook.github.io/react-native/docs/modal.html#onorientationchange
*/
onOrientationChange?: ?DirectEventHandler<OrientationChangeEvent>,
|}>;
class Modal extends React.Component<Props> {
static defaultProps: {|hardwareAccelerated: boolean, visible: boolean|} = {
visible: true,
hardwareAccelerated: false,
};
static contextTypes: any | {|rootTag: React$PropType$Primitive<number>|} = {
rootTag: PropTypes.number,
};
_identifier: number;
_eventSubscription: ?EmitterSubscription;
constructor(props: Props) {
super(props);
Modal._confirmProps(props);
this._identifier = uniqueModalIdentifier++;
}
static childContextTypes:
| any
| {|virtualizedList: React$PropType$Primitive<any>|} = {
virtualizedList: PropTypes.object,
};
getChildContext(): {|virtualizedList: null|} {
// Reset the context so VirtualizedList doesn't get confused by nesting
// in the React tree that doesn't reflect the native component hierarchy.
return {
virtualizedList: null,
};
}
componentWillUnmount() {
if (this.props.onDismiss != null) {
this.props.onDismiss();
}
}
UNSAFE_componentWillReceiveProps(nextProps: Props) {
Modal._confirmProps(nextProps);
}
static _confirmProps(props: Props) {
if (
props.presentationStyle &&
props.presentationStyle !== 'overFullScreen' &&
props.transparent
) {
console.warn(
`Modal with '${
props.presentationStyle
}' presentation style and 'transparent' value is not supported.`,
);
}
}
render(): React.Node {
if (this.props.visible !== true) {
return null;
}
const containerStyles = {
backgroundColor: this.props.transparent ? 'transparent' : 'white',
};
let animationType = this.props.animationType;
if (!animationType) {
// manually setting default prop here to keep support for the deprecated 'animated' prop
animationType = 'none';
if (this.props.animated) {
animationType = 'slide';
}
}
let presentationStyle = this.props.presentationStyle;
if (!presentationStyle) {
presentationStyle = 'fullScreen';
if (this.props.transparent) {
presentationStyle = 'overFullScreen';
}
}
const innerChildren = __DEV__ ? (
<AppContainer rootTag={this.context.rootTag}>
{this.props.children}
</AppContainer>
) : (
this.props.children
);
return (
<RCTModalHostView
animationType={animationType}
presentationStyle={presentationStyle}
transparent={this.props.transparent}
hardwareAccelerated={this.props.hardwareAccelerated}
onRequestClose={this.props.onRequestClose}
onShow={this.props.onShow}
statusBarTranslucent={this.props.statusBarTranslucent}
identifier={this._identifier}
style={styles.modal}
onStartShouldSetResponder={this._shouldSetResponder}
supportedOrientations={this.props.supportedOrientations}
onOrientationChange={this.props.onOrientationChange}>
<ScrollView.Context.Provider value={null}>
<View style={[styles.container, containerStyles]}>
{innerChildren}
</View>
</ScrollView.Context.Provider>
</RCTModalHostView>
);
}
// We don't want any responder events bubbling out of the modal.
_shouldSetResponder(): boolean {
return true;
}
}
const side = I18nManager.getConstants().isRTL ? 'right' : 'left';
const styles = StyleSheet.create({
modal: {
position: 'absolute',
},
container: {
[side]: 0,
top: 0,
flex: 1,
},
});
module.exports = Modal;