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WheelCurvedPicker.android.js
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WheelCurvedPicker.android.js
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'use strict';
import React from 'react';
import PropTypes from 'prop-types'
import {
View,
ColorPropType,
StyleSheet,
requireNativeComponent,
} from 'react-native';
const defaultItemStyle = { color: 'white', fontSize: 26 };
const WheelCurvedPickerNativeInterface = {
name: 'WheelCurvedPicker',
propTypes: {
...View.propTypes,
data:PropTypes.array,
textColor: ColorPropType,
textSize: PropTypes.number,
itemStyle: PropTypes.object,
itemSpace: PropTypes.number,
onValueChange: PropTypes.func,
selectedValue: PropTypes.any,
selectedIndex: PropTypes.number,
}
}
const WheelCurvedPickerNative = requireNativeComponent('WheelCurvedPicker', WheelCurvedPickerNativeInterface);
class WheelCurvedPicker extends React.Component {
static propTypes = {
...View.propTypes,
data:PropTypes.array,
textColor: ColorPropType,
textSize: PropTypes.number,
itemStyle: PropTypes.object,
itemSpace: PropTypes.number,
onValueChange: PropTypes.func,
selectedValue: PropTypes.any,
selectedIndex: PropTypes.number,
}
static defaultProps = {
itemSpace: 20
}
state = this._stateFromProps(this.props)
constructor(props){
super(props)
this.state = this._stateFromProps(props)
}
componentWillReceiveProps (props) {
this.setState(this._stateFromProps(props));
}
_stateFromProps(props) {
let selectedIndex = 0;
let items = [];
React.Children.forEach(props.children, function (child, index) {
if (child.props.value === props.selectedValue) {
selectedIndex = index;
}
items.push({value: child.props.value, label: child.props.label});
});
let itemStyle = StyleSheet.flatten([defaultItemStyle, props.itemStyle]);
let textSize = itemStyle.fontSize
let textColor =itemStyle.color
return {selectedIndex, items, textSize, textColor};
}
_onValueChange(e) {
if (this.props.onValueChange) {
this.props.onValueChange(e.nativeEvent.data);
}
}
render() {
return <WheelCurvedPickerNative
{...this.props}
onValueChange={(e)=>{
this._onValueChange(e)
} }
data={this.state.items}
textColor={this.state.textColor}
textSize={this.state.textSize}
selectedIndex={parseInt(this.state.selectedIndex)} />;
}
}
class Item extends React.Component {
static propTypes = {
value: PropTypes.any, // string or integer basically
label: PropTypes.string,
}
render() {
// These items don't get rendered directly.
return null
}
}
WheelCurvedPicker.Item = Item;
export default WheelCurvedPicker