import { useState } from "react" ; interface TableDataRow { name : string ; calories : number ; } const data = [ { name : "Baked Potato" , calories : 93 } , { name : "French Fries" , calories : 312 } , { name : "Cheddar" , calories : 403 } , { name : "Brie" , calories : 334 } , { name : "Feta" , calories : 264 } , { name : "Ricotta" , calories : 264 } , ] ; export function useListStory ( initialRowsPerPage = 2 ) { const [ page , setPage ] = useState ( 0 ) ; const [ rowsPerPage , setRowsPerPage ] = useState ( initialRowsPerPage ) ; const [ selected , setSelected ] = useState ( [ data [ 0 ] . name , data [ 2 ] . name ] ) ; const hasNextPage = ( page + 1 ) * rowsPerPage < data . length ; const hasPreviousPage = page > 0 ; const isRowSelected = ( name ) => ! ! selected . find ( ( selected ) => selected === name ) ; const toggleRow = ( name ) => { if ( isRowSelected ( name ) ) { setSelected ( selected . filter ( ( row ) => row !== name ) ) ; } else { setSelected ( [ ... selected , name ] ) ; } } ; const toggleAll = ( ) => { if ( data . length === selected . length ) { setSelected ( [ ] ) ; } else { setSelected ( data . map ( ( row ) => row . name ) ) ; } } ; const nextPage = ( ) => setPage ( page + 1 ) ; const previousPage = ( ) => setPage ( page - 1 ) ; const pageData = data . slice ( page * rowsPerPage , ( page + 1 ) * rowsPerPage ) ; return { data , pageData , page , nextPage , previousPage , hasNextPage , hasPreviousPage , rowsPerPage , setRowsPerPage , selected , isRowSelected , toggleRow , toggleAll } ; }