@devvie/bottom-sheet/lib/module/hooks/useHandleAndroidBackButtonClose/index.js

The 😎smart , 📦tiny , and 🎗flexible bottom sheet your app craves 🚀

"use strict";

import { useEffect, useRef } from 'react';
import { BackHandler, Platform } from 'react-native';
/**
 * Handles closing sheet when back button is pressed on
 * android and sheet is opened
 *
 * @param {boolean} shouldClose Whether to close sheet when back button is pressed
 * @param {boolean} closeSheet Function to call to close the sheet
 * @param {boolean} sheetOpen Determines the visibility of the sheet
 */
const useHandleAndroidBackButtonClose = (shouldClose = true, closeSheet, sheetOpen = false) => {
  const handler = useRef(undefined);
  useEffect(() => {
    if (Platform.OS !== 'android') return;
    handler.current = BackHandler.addEventListener('hardwareBackPress', () => {
      if (sheetOpen) {
        if (shouldClose) {
          closeSheet?.();
        }
        return true; // prevent back press event bubbling as long as sheet is open
      } else return false; // when sheet is closed allow bubbling
    });
    return () => {
      handler.current?.remove?.();
    };
  }, [shouldClose, closeSheet, sheetOpen]);
};
export default useHandleAndroidBackButtonClose;
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