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