@wordpress/components/build-module/mobile/segmented-control/index.native.js

UI components for WordPress.

import _extends from "@babel/runtime/helpers/esm/extends";
import { createElement } from "@wordpress/element";

/**
 * External dependencies
 */
import { View, TouchableWithoutFeedback, Text, Platform, Animated, Easing } from 'react-native';
/**
 * WordPress dependencies
 */

import { useState, useEffect } from '@wordpress/element';
import { usePreferredColorSchemeStyle } from '@wordpress/compose';
/**
 * Internal dependencies
 */

import { performLayoutAnimation } from '../layout-animation';
import styles from './style.scss';
const ANIMATION_DURATION = 200;
const isIOS = Platform.OS === 'ios';

const Segment = _ref => {
  let {
    isSelected,
    title,
    onPress,
    onLayout,
    ...props
  } = _ref;
  const isSelectedIOS = isIOS && isSelected;
  const segmentStyle = [styles.segment, isIOS && styles.segmentIOS];
  const textStyle = usePreferredColorSchemeStyle(styles.buttonTextDefault, styles.buttonTextDefaultDark);
  const selectedTextStyle = usePreferredColorSchemeStyle(styles.buttonTextSelected, styles.buttonTextSelectedDark);
  const shadowStyle = usePreferredColorSchemeStyle(styles.shadowIOS, {});
  return createElement(View, {
    style: isSelectedIOS && shadowStyle
  }, createElement(TouchableWithoutFeedback, {
    onPress: onPress
  }, createElement(View, _extends({
    style: segmentStyle,
    onLayout: onLayout
  }, props), createElement(Text, {
    style: [textStyle, isSelected && selectedTextStyle],
    maxFontSizeMultiplier: 2
  }, title))));
};

const SegmentedControls = _ref2 => {
  var _segmentsDimensions$a, _segmentsDimensions$a2;

  let {
    segments,
    segmentHandler,
    selectedIndex,
    addonLeft,
    addonRight
  } = _ref2;
  const selectedSegmentIndex = selectedIndex || 0;
  const [activeSegmentIndex, setActiveSegmentIndex] = useState(selectedSegmentIndex);
  const [segmentsDimensions, setSegmentsDimensions] = useState({
    [activeSegmentIndex]: {
      width: 0,
      height: 0
    }
  });
  const [positionAnimationValue] = useState(new Animated.Value(0));
  useEffect(() => {
    setActiveSegmentIndex(selectedSegmentIndex);
    segmentHandler(segments[selectedSegmentIndex]); // Disable reason: deferring this refactor to the native team.
    // see https://github.com/WordPress/gutenberg/pull/41166
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, []);
  useEffect(() => {
    positionAnimationValue.setValue(calculateEndValue(activeSegmentIndex)); // Disable reason: deferring this refactor to the native team.
    // see https://github.com/WordPress/gutenberg/pull/41166
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [segmentsDimensions]);
  const containerStyle = usePreferredColorSchemeStyle(styles.container, styles.containerDark);

  function performSwatchAnimation(index) {
    Animated.timing(positionAnimationValue, {
      toValue: calculateEndValue(index),
      duration: ANIMATION_DURATION,
      easing: Easing.ease,
      useNativeDriver: false
    }).start();
  }

  function calculateEndValue(index) {
    const {
      paddingLeft: offset
    } = isIOS ? styles.containerIOS : styles.container;
    const widths = Object.values(segmentsDimensions).map(dimension => dimension.width);
    const widthsDistance = widths.slice(0, index);
    const widthsDistanceSum = widthsDistance.reduce((sum, n) => sum + n, 0);
    const endValue = index === 0 ? 0 : widthsDistanceSum;
    return endValue + offset;
  }

  function onHandlePress(segment, index) {
    performLayoutAnimation(ANIMATION_DURATION);
    setActiveSegmentIndex(index);
    segmentHandler(segment);
    performSwatchAnimation(index);
  }

  function segmentOnLayout(event, index) {
    const {
      width,
      height
    } = event.nativeEvent.layout;
    setSegmentsDimensions({ ...segmentsDimensions,
      [index]: {
        width,
        height
      }
    });
  }

  const selectedStyle = usePreferredColorSchemeStyle(styles.selected, styles.selectedDark);
  const width = (_segmentsDimensions$a = segmentsDimensions[activeSegmentIndex]) === null || _segmentsDimensions$a === void 0 ? void 0 : _segmentsDimensions$a.width;
  const height = (_segmentsDimensions$a2 = segmentsDimensions[activeSegmentIndex]) === null || _segmentsDimensions$a2 === void 0 ? void 0 : _segmentsDimensions$a2.height;
  const outlineStyle = [styles.outline, isIOS && styles.outlineIOS];
  return createElement(View, {
    style: styles.row
  }, createElement(View, {
    style: styles.flex
  }, addonLeft), createElement(View, {
    style: [containerStyle, isIOS && styles.containerIOS]
  }, segments.map((segment, index) => {
    return createElement(Segment, {
      title: segment,
      onPress: () => onHandlePress(segment, index),
      isSelected: activeSegmentIndex === index,
      key: index,
      onLayout: event => segmentOnLayout(event, index),
      accessibilityState: {
        selected: activeSegmentIndex === index
      },
      accessibilityRole: 'button',
      accessibilityLabel: segment,
      accessibilityHint: `${index + 1} on ${segments.length}`
    });
  }), createElement(Animated.View, {
    style: [{
      width,
      left: positionAnimationValue,
      height
    }, selectedStyle, outlineStyle]
  })), createElement(View, {
    style: styles.flex
  }, addonRight));
};

export default SegmentedControls;
//# sourceMappingURL=index.native.js.map