@fruits-chain/react-native-xiaoshu/lib/module/tab-bar/tab-bar.js

🌈 React Native UI library

"use strict";

import isNil from 'lodash/isNil';
import isNumber from 'lodash/isNumber';
import React, { useState, useRef, memo, useCallback, useEffect } from 'react';
import { Text, TouchableOpacity, ScrollView, Animated } from 'react-native';
import BottomBar from "../bottom-bar/index.js";
import { varCreator as varCreatorButton } from "../button/style.js";
import { getDefaultValue } from "../helpers/index.js";
import { useControllableValue, useOriginalDeepCopy, useUpdateEffect } from "../hooks/index.js";
import Theme from "../theme/index.js";
import { varCreator, styleCreator } from "./style.js";
import { jsxs as _jsxs, jsx as _jsx, Fragment as _Fragment } from "react/jsx-runtime";
const TabBar = ({
  theme,
  textColor,
  iconColor,
  activeTextColor,
  activeIconColor,
  options,
  indicator = false,
  indicatorWidth,
  indicatorHeight = 3,
  indicatorColor,
  tabAlign = 'center',
  labelBulge = false,
  height,
  style,
  ...restProps
}) => {
  const _labelBulge = isNumber(labelBulge) ? labelBulge : labelBulge ? 1.2 : 0;
  const tabNum = options.length;
  const isTabAdaption = tabAlign === 'center';
  const isTabTextCompact = isNil(indicatorWidth);
  const isIndicatorWidthLayout = isTabTextCompact || indicatorWidth === 0;
  const [value, onChange] = useControllableValue(restProps, {
    defaultValue: options[0]?.value
  });
  const [CV, STYLES, TOKENS] = Theme.useStyle({
    varCreator,
    styleCreator,
    theme
  });
  const [CV_BUTTON] = Theme.useStyle({
    varCreator: varCreatorButton
  });
  const optionsDeepCopy = useOriginalDeepCopy(options);
  const [state, setState] = useState({
    layoutFinish: false
  });
  const layouts = useRef(new Array(tabNum).fill({}));
  const AnimatedIndicatorLeft = useRef(new Animated.Value(0));
  const AnimatedIndicatorWidth = useRef(new Animated.Value(0));
  const ScrollViewRef = useRef(null);
  const ScrollViewWidthRef = useRef(0);
  if (indicator && isNil(height)) {
    height = 40;
  }
  textColor = getDefaultValue(textColor, CV.tab_bar_text_color);
  iconColor = getDefaultValue(iconColor, CV.tab_bar_icon_color);
  activeTextColor = getDefaultValue(activeTextColor, CV.tab_bar_active_text_color);
  activeIconColor = getDefaultValue(activeIconColor, CV.tab_bar_active_icon_color);
  indicatorColor = getDefaultValue(indicatorColor, CV.tab_bar_indicator_color);
  const navigateTo = useCallback(n => {
    const targetLayout = layouts.current[n];
    const left = targetLayout.tab.x + (targetLayout.tab.width - (isIndicatorWidthLayout ? targetLayout.text.width : indicatorWidth)) / 2;
    const width = isIndicatorWidthLayout ? targetLayout.text.width : indicatorWidth;
    Animated.parallel([Animated.timing(AnimatedIndicatorLeft.current, {
      toValue: left,
      useNativeDriver: false,
      duration: TOKENS.animation_duration_base
    }), Animated.timing(AnimatedIndicatorWidth.current, {
      toValue: width,
      useNativeDriver: false,
      duration: TOKENS.animation_duration_base
    })]).start();
    if (!isTabAdaption) {
      const hh = ScrollViewWidthRef.current / 2;
      ScrollViewRef.current?.scrollTo({
        x: targetLayout.tab.x + targetLayout.tab.width / 2 - hh,
        animated: true
      });
    }
  }, [TOKENS.animation_duration_base, indicatorWidth, isIndicatorWidthLayout, isTabAdaption]);
  const initIndicator = useCallback(() => {
    const layoutItems = layouts.current.filter(item => item.tab && item.text);
    if (layoutItems.length === layouts.current.length) {
      setState(s => ({
        ...s,
        layoutFinish: true
      }));
    }
  }, []);
  useUpdateEffect(() => {
    setState({
      layoutFinish: false
    });
  }, [optionsDeepCopy]);
  useEffect(() => {
    if (state.layoutFinish) {
      const n = optionsDeepCopy.findIndex(item => item.value === value);
      navigateTo(n);
    }
  }, [value, optionsDeepCopy, state.layoutFinish, navigateTo]);
  const onLayoutScrollView = useCallback(e => {
    ScrollViewWidthRef.current = e.nativeEvent.layout.width;
  }, []);
  const genOnPress = v => () => {
    onChange(v);
  };
  const genOnLayoutTab = i => e => {
    layouts.current[i] = {
      text: layouts.current[i]?.text,
      tab: e.nativeEvent.layout
    };
    initIndicator();
  };
  const genOnLayoutText = i => e => {
    layouts.current[i] = {
      tab: layouts.current[i]?.tab,
      text: e.nativeEvent.layout
    };
    initIndicator();
  };
  const tabs = optionsDeepCopy.map((item, index) => {
    const isActive = item.value === value;
    return /*#__PURE__*/_jsxs(TouchableOpacity, {
      style: [STYLES.item, isTabAdaption ? STYLES.item_adaption : null, item.iconRender ? null : STYLES.item_no_icon],
      activeOpacity: CV_BUTTON.button_active_opacity,
      onPress: isActive ? undefined : genOnPress(item.value),
      onLayout: genOnLayoutTab(index),
      children: [item.iconRender?.(isActive ? activeIconColor : iconColor), /*#__PURE__*/_jsxs(Text, {
        style: [STYLES.item_text, isTabTextCompact ? null : STYLES.item_text_full, item.iconRender ? STYLES.item_text_icon : null,
        // eslint-disable-next-line react-native/no-inline-styles
        {
          color: isActive ? activeTextColor : textColor,
          fontWeight: isActive && indicator ? '500' : 'normal'
        }, isActive && !!_labelBulge ? {
          transform: [{
            scaleX: _labelBulge
          }, {
            scaleY: _labelBulge
          }]
        } : {}],
        onLayout: genOnLayoutText(index),
        children: [item.label, !isNil(item.badge) ? /*#__PURE__*/_jsxs(Text, {
          style: STYLES.item_text_badge,
          children: [` `, item.badge]
        }) : null]
      })]
    }, item.value);
  });
  const indicatorJSX = indicator && state.layoutFinish ? /*#__PURE__*/_jsx(Animated.View, {
    // eslint-disable-next-line react-native/no-inline-styles
    style: {
      height: indicatorHeight,
      width: AnimatedIndicatorWidth.current,
      backgroundColor: indicatorColor,
      position: 'absolute',
      left: AnimatedIndicatorLeft.current,
      bottom: 0
    }
  }) : null;
  return /*#__PURE__*/_jsx(BottomBar, {
    ...restProps,
    height: height,
    style: [STYLES.tab_bar, style],
    children: isTabAdaption ? /*#__PURE__*/_jsxs(_Fragment, {
      children: [tabs, indicatorJSX]
    }) : /*#__PURE__*/_jsxs(ScrollView, {
      onLayout: onLayoutScrollView,
      ref: ScrollViewRef,
      horizontal: true,
      bounces: false,
      showsHorizontalScrollIndicator: false,
      style: STYLES.tab_bar_scroll,
      contentContainerStyle: _labelBulge ? [STYLES.tab_bar_scroll_content, STYLES.tab_bar_scroll_content_label_bulge] : STYLES.tab_bar_scroll_content,
      children: [indicatorJSX, tabs]
    })
  });
};
export default /*#__PURE__*/memo(TabBar);
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