如何从HOC访问包装的组件状态 [英] How to access a Wrapped Component state from HOC
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问题描述
我正在构建此HOC模式.
I'm building this HOC Modal.
当我按下Modal上的"Aplicar"按钮(TouchableItem:onPress)时,我需要访问WrappedComponent状态.
When I press the Button "Aplicar" (TouchableItem:onPress), that is on the Modal, I need to access the WrappedComponent state.
有什么办法吗?
import React, { Component, PropTypes } from 'react';
import { View, Text } from 'react-native';
import MaterialIcons from 'react-native-vector-icons/MaterialIcons';
import TouchableItem from '../TouchableItem';
import ModalHOC from '../Modal';
import styles from './styles';
const ModalFiltroHOC = () => (WrappedComponent) => {
@ModalHOC()
class ModalFiltro extends Component {
static propTypes = {
onClose: PropTypes.func.isRequired,
onSuccess: PropTypes.func.isRequired,
successText: PropTypes.string.isRequired,
title: PropTypes.string.isRequired,
}
render() {
return (
<View style={{ flex: 1, backgroundColor: 'white' }}>
<View style={styles.modalFiltroHeader}>
<View style={{ flex: 0.15 }}></View>
<View style={styles.modalFiltroHeaderTitle}>
<Text style={styles.modalFiltroHeaderTitleText}>
{this.props.title}
</Text>
</View>
<View style={styles.modalFiltroHeaderIconContainer}>
<TouchableItem
style={{ marginRight: 10 }}
onPress={this.props.onClose}
pressColor={'white'}
delayPressIn={0}
borderless
>
<MaterialIcons
color={'white'}
name="close"
size={22}
/>
</TouchableItem>
</View>
</View>
<View style={styles.modalFiltroContent}>
<WrappedComponent {...this.props} />
</View>
<TouchableItem
onPress={this.props.onSuccess} {/* <-- HERE */}
pressColor={'white'}
style={styles.modalFiltroSuccessContainer}
>
<View pointerEvents="box-only" style={styles.modalFiltroSucccess}>
<MaterialIcons
color={'white'}
name="check"
size={22}
/>
<Text style={styles.modalFiltroSucccessText}>
{this.props.successText}
</Text>
</View>
</TouchableItem>
</View>
);
}
}
return ModalFiltro;
};
export default ModalFiltroHOC;
注意:
ModalHOC是一个简单的React Native Modal.
ModalHOC is a simple React Native Modal.
提前谢谢!
推荐答案
我使用继承反转解决了此问题您可以在此帖子中了解更多信息.
I solved this using Inheritance Inversion You can read more about it in this post
代码现在看起来像这样:
The code now looks like this:
import React, { Component, PropTypes } from 'react';
import { View, Text } from 'react-native';
import MaterialIcons from 'react-native-vector-icons/MaterialIcons';
import TouchableItem from '../TouchableItem';
import ModalHOC from '../Modal';
import styles from './styles';
const ModalFiltroHOC = () => (WrappedComponent) => {
@ModalHOC()
class ModalFiltro extends WrappedComponent { {/* <--- */}
handleSuccess = () => {
console.log(this.state);
}
render() {
return (
<View style={{ flex: 1, backgroundColor: 'white' }}>
<View style={styles.modalFiltroHeader}>
<View style={{ flex: 0.15 }}></View>
<View style={styles.modalFiltroHeaderTitle}>
<Text style={styles.modalFiltroHeaderTitleText}>
{this.props.title}
</Text>
</View>
<View style={styles.modalFiltroHeaderIconContainer}>
<TouchableItem
style={{ marginRight: 10 }}
onPress={this.props.onClose}
pressColor={'white'}
delayPressIn={0}
borderless
>
<MaterialIcons
color={'white'}
name="close"
size={22}
/>
</TouchableItem>
</View>
</View>
<View style={styles.modalFiltroContent}>
{super.render()} {/* <--- */}
</View>
<TouchableItem
onPress={this.handleSuccess}
pressColor={'white'}
style={styles.modalFiltroSuccessContainer}
>
<View pointerEvents="box-only" style={styles.modalFiltroSucccess}>
<MaterialIcons
color={'white'}
name="check"
size={22}
/>
<Text style={styles.modalFiltroSucccessText}>
{this.props.successText}
</Text>
</View>
</TouchableItem>
</View>
);
}
}
return ModalFiltro;
};
export default ModalFiltroHOC;
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