150 lines
4.2 KiB
JavaScript
150 lines
4.2 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @flow strict-local
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*/
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'use strict';
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import AndroidDropdownPickerNativeComponent, {
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Commands as AndroidDropdownPickerCommands,
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} from './AndroidDropdownPickerNativeComponent';
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import AndroidDialogPickerNativeComponent, {
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Commands as AndroidDialogPickerCommands,
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} from './AndroidDialogPickerNativeComponent';
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import * as React from 'react';
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import StyleSheet from '../../StyleSheet/StyleSheet';
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import invariant from 'invariant';
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import processColor from '../../StyleSheet/processColor';
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import type {ColorValue} from '../../StyleSheet/StyleSheetTypes';
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import type {SyntheticEvent} from '../../Types/CoreEventTypes';
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import type {TextStyleProp} from '../../StyleSheet/StyleSheet';
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type PickerItemSelectSyntheticEvent = SyntheticEvent<
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$ReadOnly<{|
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position: number,
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|}>,
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>;
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type PickerItemValue = number | string;
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type Props = $ReadOnly<{|
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accessibilityLabel?: ?Stringish,
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children?: React.Node,
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style?: ?TextStyleProp,
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backgroundColor?: ?ColorValue,
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selectedValue?: ?PickerItemValue,
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enabled?: ?boolean,
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mode?: ?('dialog' | 'dropdown'),
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onValueChange?: ?(itemValue: ?PickerItemValue, itemIndex: number) => mixed,
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prompt?: ?string,
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testID?: string,
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|}>;
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/**
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* Not exposed as a public API - use <Picker> instead.
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*/
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function PickerAndroid(props: Props): React.Node {
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const pickerRef = React.useRef(null);
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const [items, selected] = React.useMemo(() => {
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// eslint-disable-next-line no-shadow
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let selected = 0;
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// eslint-disable-next-line no-shadow
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const items = React.Children.map(props.children, (child, index) => {
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if (child === null) {
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return null;
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}
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if (child.props.value === props.selectedValue) {
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selected = index;
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}
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const {color, label} = child.props;
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const processedColor = processColor(color);
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invariant(
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processedColor == null || typeof processedColor === 'number',
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'Unexpected color given for PickerAndroid color prop',
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);
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return {
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color: color == null ? null : processedColor,
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label,
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};
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});
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return [items, selected];
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}, [props.children, props.selectedValue]);
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const onSelect = React.useCallback(
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({nativeEvent}: PickerItemSelectSyntheticEvent) => {
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const {position} = nativeEvent;
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const onValueChange = props.onValueChange;
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if (onValueChange != null) {
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if (position >= 0) {
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const children = React.Children.toArray(props.children).filter(
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item => item != null,
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);
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const value = children[position].props.value;
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if (props.selectedValue !== value) {
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onValueChange(value, position);
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}
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} else {
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onValueChange(null, position);
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}
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}
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const {current} = pickerRef;
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if (current != null && position !== selected) {
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const Commands =
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props.mode === 'dropdown'
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? AndroidDropdownPickerCommands
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: AndroidDialogPickerCommands;
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Commands.setNativeSelectedPosition(current, selected);
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}
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},
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[
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props.children,
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props.onValueChange,
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props.selectedValue,
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props.mode,
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selected,
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],
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);
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const rootProps = {
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accessibilityLabel: props.accessibilityLabel,
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enabled: props.enabled,
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items,
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onSelect,
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prompt: props.prompt,
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ref: pickerRef,
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selected,
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style: StyleSheet.compose(
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styles.pickerAndroid,
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props.style,
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),
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backgroundColor: props.backgroundColor,
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testID: props.testID,
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};
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return props.mode === 'dropdown' ? (
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<AndroidDropdownPickerNativeComponent {...rootProps} />
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) : (
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<AndroidDialogPickerNativeComponent {...rootProps} />
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);
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}
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const styles = StyleSheet.create({
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pickerAndroid: {
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// The picker will conform to whatever width is given, but we do
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// have to set the component's height explicitly on the
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// surrounding view to ensure it gets rendered.
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// TODO would be better to export a native constant for this,
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// like in iOS the RCTDatePickerManager.m
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height: 50,
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},
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});
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module.exports = PickerAndroid;
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