katoikia-app/mobile-ui/components/Tabs.js

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2022-07-18 20:54:08 +00:00
import React from 'react';
import { StyleSheet, Dimensions, FlatList, Animated } from 'react-native';
import { Block, theme } from 'galio-framework';
const { width } = Dimensions.get('screen');
import argonTheme from '../constants/Theme';
const defaultMenu = [
{ id: 'popular', title: 'Popular', },
{ id: 'beauty', title: 'Beauty', },
{ id: 'cars', title: 'Cars', },
{ id: 'motocycles', title: 'Motocycles', },
];
export default class Tabs extends React.Component {
static defaultProps = {
data: defaultMenu,
initialIndex: null,
}
state = {
active: null,
}
componentDidMount() {
const { initialIndex } = this.props;
initialIndex && this.selectMenu(initialIndex);
}
animatedValue = new Animated.Value(1);
animate() {
this.animatedValue.setValue(0);
Animated.timing(this.animatedValue, {
toValue: 1,
duration: 300,
useNativeDriver: false, // color not supported
}).start()
}
menuRef = React.createRef();
onScrollToIndexFailed = () => {
this.menuRef.current.scrollToIndex({
index: 0,
viewPosition: 0.5
});
}
selectMenu = (id) => {
this.setState({ active: id });
this.menuRef.current.scrollToIndex({
index: this.props.data.findIndex(item => item.id === id),
viewPosition: 0.5
});
this.animate();
this.props.onChange && this.props.onChange(id);
}
renderItem = (item) => {
const isActive = this.state.active === item.id;
const textColor = this.animatedValue.interpolate({
inputRange: [0, 1],
outputRange: [argonTheme.COLORS.BLACK, isActive ? argonTheme.COLORS.WHITE : argonTheme.COLORS.BLACK],
extrapolate: 'clamp',
});
const containerStyles = [
styles.titleContainer,
!isActive && { backgroundColor: argonTheme.COLORS.SECONDARY },
isActive && styles.containerShadow
];
return (
<Block style={containerStyles}>
<Animated.Text
style={[
styles.menuTitle,
{ color: textColor }
]}
onPress={() => this.selectMenu(item.id)}>
{item.title}
</Animated.Text>
</Block>
)
}
renderMenu = () => {
const { data, ...props } = this.props;
return (
<FlatList
{...props}
data={data}
horizontal={true}
ref={this.menuRef}
extraData={this.state}
keyExtractor={(item) => item.id}
showsHorizontalScrollIndicator={false}
onScrollToIndexFailed={this.onScrollToIndexFailed}
renderItem={({ item }) => this.renderItem(item)}
contentContainerStyle={styles.menu}
/>
)
}
render() {
return (
<Block style={styles.container}>
{this.renderMenu()}
</Block>
)
}
}
const styles = StyleSheet.create({
container: {
width: width,
backgroundColor: theme.COLORS.WHITE,
zIndex: 2,
},
shadow: {
shadowColor: theme.COLORS.BLACK,
shadowOffset: { width: 0, height: 2 },
shadowRadius: 8,
shadowOpacity: 0.2,
elevation: 4,
},
menu: {
paddingHorizontal: theme.SIZES.BASE * 2.5,
paddingTop: 8,
paddingBottom: 16,
},
titleContainer: {
alignItems: 'center',
backgroundColor: argonTheme.COLORS.ACTIVE,
borderRadius: 4,
marginRight: 9
},
containerShadow: {
shadowColor: 'black',
shadowOffset: { width: 0, height: 2 },
shadowRadius: 4,
shadowOpacity: 0.1,
elevation: 1,
},
menuTitle: {
fontWeight: '600',
fontSize: 14,
// lineHeight: 28,
paddingVertical: 10,
paddingHorizontal: 16,
color: argonTheme.COLORS.MUTED
},
});