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CollapsibleSection.js
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CollapsibleSection.js
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import React from 'react';
import {
View,
TouchableOpacity,
Animated
} from 'react-native';
class CollapsibleSection extends React.Component {
constructor(props) {
super(props);
this.state = {
title: props.title,
expanded: false,
minHeight: null,
maxHeight: null,
animation: null
};
}
componentWillReceiveProps(nextProps) {
this.setState({
refreshView: nextProps.refreshView
});
}
toggle() {
let initialValue = this.state.expanded
? this.state.maxHeight + this.state.minHeight
: this.state.minHeight,
finalValue = this.state.expanded
? this.state.minHeight
: this.state.maxHeight + this.state.minHeight;
this.setState({
expanded: !this.state.expanded
});
this.state.animation.setValue(initialValue);
Animated.spring(this.state.animation, {
toValue: finalValue
}).start();
}
_setMaxHeight(event) {
let { maxHeight } = this.state
if (!maxHeight) {
this.setState({
maxHeight: event.nativeEvent.layout.height
});
}
}
_setMinHeight(event) {
let { minHeight } = this.state
if (!minHeight) {
this.setState({
minHeight: event.nativeEvent.layout.height,
animation: new Animated.Value(event.nativeEvent.layout.height)
});
}
}
render() {
return (
<Animated.View style={[styles.container, { height: this.state.animation }]} >
<TouchableOpacity
activeOpacity={0.8}
onPress={this.toggle.bind(this)}
onLayout={this._setMinHeight.bind(this)}
>
{this.props.header}
</TouchableOpacity>
<View onLayout={this._setMaxHeight.bind(this)}>
{this.props.children}
</View>
</Animated.View>
);
}
static defaultProps = {
customHeader: null,
title: null,
subTitle: null,
children: null
}
}
const styles = {
container: {
overflow: 'hidden',
}
}
export default CollapsibleSection;