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143 lines
6.5 KiB
143 lines
6.5 KiB
var __rest = (this && this.__rest) || function (s, e) {
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var t = {};
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for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
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t[p] = s[p];
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if (s != null && typeof Object.getOwnPropertySymbols === "function")
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for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
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if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
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t[p[i]] = s[p[i]];
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}
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return t;
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};
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import React from 'react';
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import { View, Animated, StyleSheet, ScrollView, } from 'react-native';
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import { defaultTheme } from '../helpers';
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export const TabBase = (_a) => {
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var _b, _c;
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var { theme = defaultTheme, children, value = 0, scrollable = false, onChange = () => { }, indicatorStyle, disableIndicator, variant = 'default', style, dense, iconPosition, buttonStyle, titleStyle, containerStyle } = _a, rest = __rest(_a, ["theme", "children", "value", "scrollable", "onChange", "indicatorStyle", "disableIndicator", "variant", "style", "dense", "iconPosition", "buttonStyle", "titleStyle", "containerStyle"]);
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const animationRef = React.useRef(new Animated.Value(0));
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const scrollViewRef = React.useRef(null);
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const scrollViewPosition = React.useRef(0);
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const validChildren = React.useMemo(() => React.Children.toArray(children), [children]);
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const tabItemPositions = React.useRef([]);
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const [tabContainerWidth, setTabContainerWidth] = React.useState(0);
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const scrollHandler = React.useCallback((currValue) => {
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if (tabItemPositions.current.length > currValue) {
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let itemStartPosition = currValue === 0
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? 0
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: tabItemPositions.current[currValue - 1].position;
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let itemEndPosition = tabItemPositions.current[currValue].position;
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const scrollCurrentPosition = scrollViewPosition.current;
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const tabContainerCurrentWidth = tabContainerWidth;
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let scrollX = scrollCurrentPosition;
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if (itemStartPosition < scrollCurrentPosition) {
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scrollX += itemStartPosition - scrollCurrentPosition;
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}
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else if (scrollCurrentPosition + tabContainerCurrentWidth <
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itemEndPosition) {
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scrollX +=
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itemEndPosition -
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(scrollCurrentPosition + tabContainerCurrentWidth);
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}
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scrollViewRef.current.scrollTo({
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x: scrollX,
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y: 0,
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animated: true,
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});
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}
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}, [tabContainerWidth]);
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React.useEffect(() => {
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Animated.timing(animationRef.current, {
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toValue: value,
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useNativeDriver: true,
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duration: 170,
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}).start();
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scrollable && requestAnimationFrame(() => scrollHandler(value));
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}, [animationRef, scrollHandler, value, scrollable]);
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const onScrollHandler = React.useCallback((event) => {
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scrollViewPosition.current = event.nativeEvent.contentOffset.x;
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}, []);
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const indicatorTransitionInterpolate = React.useMemo(() => {
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const countItems = validChildren.length;
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if (countItems < 2 || !tabItemPositions.current.length) {
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return 0;
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}
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const inputRange = Array.from(Array(countItems + 1).keys());
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const outputRange = tabItemPositions.current.map(({ position }) => position);
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if (inputRange.length - 1 !== outputRange.length) {
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return 0;
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}
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return animationRef.current.interpolate({
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inputRange,
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outputRange: [0, ...outputRange],
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});
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}, [animationRef, validChildren, tabItemPositions.current.length]);
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const WIDTH = React.useMemo(() => {
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var _a;
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return (_a = tabItemPositions.current[value]) === null || _a === void 0 ? void 0 : _a.width;
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}, [value, tabItemPositions.current.length]);
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return (React.createElement(View, Object.assign({}, rest, { accessibilityRole: "tablist", style: [
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variant === 'primary' && {
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backgroundColor: (_b = theme === null || theme === void 0 ? void 0 : theme.colors) === null || _b === void 0 ? void 0 : _b.primary,
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},
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styles.viewStyle,
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style,
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], onLayout: ({ nativeEvent: { layout } }) => {
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setTabContainerWidth(layout.width);
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} }), React.createElement(scrollable ? ScrollView : React.Fragment, Object.assign(Object.assign({}, (scrollable && {
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horizontal: true,
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ref: scrollViewRef,
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onScroll: onScrollHandler,
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showsHorizontalScrollIndicator: false,
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})), { children: (React.createElement(React.Fragment, null,
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validChildren.map((child, index) => {
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return React.cloneElement(child, {
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onPress: () => onChange(index),
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onLayout: (event) => {
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var _a;
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const { width } = event.nativeEvent.layout;
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const previousItemPosition = ((_a = tabItemPositions.current[index - 1]) === null || _a === void 0 ? void 0 : _a.position) || 0;
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tabItemPositions.current[index] = {
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position: previousItemPosition + width,
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width,
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};
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},
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active: index === value,
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variant,
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_parentProps: {
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dense,
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iconPosition,
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buttonStyle,
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containerStyle,
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titleStyle,
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},
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});
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}),
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!disableIndicator && (React.createElement(Animated.View, { style: [
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styles.indicator,
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{
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backgroundColor: (_c = theme === null || theme === void 0 ? void 0 : theme.colors) === null || _c === void 0 ? void 0 : _c.secondary,
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transform: [
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{
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translateX: indicatorTransitionInterpolate,
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},
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],
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width: WIDTH,
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},
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indicatorStyle,
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] })))) }))));
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};
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const styles = StyleSheet.create({
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viewStyle: {
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flexDirection: 'row',
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position: 'relative',
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},
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indicator: {
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display: 'flex',
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position: 'absolute',
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height: 2,
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bottom: 0,
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},
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});
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TabBase.displayName = 'Tab';
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