143 lines
5 KiB
JavaScript
143 lines
5 KiB
JavaScript
import * as React from 'react';
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import {withTheme} from 'react-native-paper';
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import TabIcon from "./TabIcon";
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import TabHomeIcon from "./TabHomeIcon";
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import {AnimatedValue} from "react-native-reanimated";
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import {Animated} from 'react-native';
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type Props = {
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state: Object,
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descriptors: Object,
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navigation: Object,
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theme: Object,
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collapsibleStack: Object,
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}
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type State = {
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translateY: AnimatedValue,
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}
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/**
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* Abstraction layer for Agenda component, using custom configuration
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*/
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class CustomTabBar extends React.Component<Props, State> {
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static TAB_BAR_HEIGHT = 48;
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barSynced: boolean; // Is the bar synced with the header for animations?
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state = {
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translateY: new Animated.Value(0),
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}
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// shouldComponentUpdate(nextProps: Props): boolean {
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// return (nextProps.theme.dark !== this.props.theme.dark)
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// || (nextProps.state.index !== this.props.state.index);
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// }
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tabRef: Object;
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constructor() {
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super();
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this.tabRef = React.createRef();
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this.barSynced = false;
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}
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onItemPress(route: Object, currentIndex: number, destIndex: number) {
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const event = this.props.navigation.emit({
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type: 'tabPress',
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target: route.key,
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canPreventDefault: true,
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});
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if (currentIndex !== destIndex && !event.defaultPrevented) {
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this.state.translateY = new Animated.Value(0);
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this.props.navigation.navigate(route.name, {
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screen: 'index',
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params: {animationDir: currentIndex < destIndex ? "right" : "left"}
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});
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}
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}
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onRouteChange = () => {
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this.barSynced = false;
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}
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render() {
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const state = this.props.state;
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const descriptors = this.props.descriptors;
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const navigation = this.props.navigation;
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this.props.navigation.addListener('state', this.onRouteChange);
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return (
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<Animated.View
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ref={this.tabRef}
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// animation={"fadeInUp"}
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// duration={500}
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// useNativeDriver
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style={{
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flexDirection: 'row',
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height: CustomTabBar.TAB_BAR_HEIGHT,
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width: '100%',
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position: 'absolute',
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bottom: 0,
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left: 0,
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backgroundColor: this.props.theme.colors.surface,
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transform: [{translateY: this.state.translateY}]
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}}
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>
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{state.routes.map((route, index) => {
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const {options} = descriptors[route.key];
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const label =
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options.tabBarLabel !== undefined
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? options.tabBarLabel
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: options.title !== undefined
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? options.title
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: route.name;
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const isFocused = state.index === index;
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const onPress = () => this.onItemPress(route, state.index, index);
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const onLongPress = () => {
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navigation.emit({
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type: 'tabLongPress',
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target: route.key,
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});
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};
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if (isFocused) {
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const stackState = route.state;
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const stackRoute = route.state ? stackState.routes[stackState.index] : undefined;
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const params = stackRoute ? stackRoute.params : undefined;
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const collapsible = params ? params.collapsible : undefined;
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if (collapsible && !this.barSynced) {
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this.barSynced = true;
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this.setState({translateY: Animated.multiply(-1.5, collapsible.translateY)});
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}
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}
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const color = isFocused ? options.activeColor : options.inactiveColor;
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const iconData = {focused: isFocused, color: color};
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if (route.name !== "home") {
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return <TabIcon
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onPress={onPress}
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onLongPress={onLongPress}
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icon={options.tabBarIcon(iconData)}
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color={color}
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label={label}
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focused={isFocused}
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extraData={state.index > index}
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key={route.key}
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/>
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} else
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return <TabHomeIcon
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onPress={onPress}
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onLongPress={onLongPress}
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focused={isFocused}
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key={route.key}
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/>
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})}
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</Animated.View>
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);
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}
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}
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export default withTheme(CustomTabBar);
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