chakra-paginator

Chakra paginator

Table of Contents

• Version
• Installation
• Demo with all options applied
• Components API
  • Paginator
  • usePaginator
  • Container
  • PageGroup
  • Previous
  • Next
• Usage
  • Minimal
  • Styling
  • Disabling
  • Page size
  • Limits
  • Offset
  • Pages quantity
  • Full usage example

Version

Installation

npm

npm i chakra-paginator

Yarn

yarn add chakra-paginator

Demo with all options applied

Check it out in this Sandbox

Components API

Paginator

Prop	Description	Type	Default	Required
pagesQuantity	The total number of pages, calculated based on Backend data	number	0	yes
onPageChange	On change handler which returns the last selected page	(nextPage: number) => void		yes
isDisabled	Disables all of the pagination components. You can always disable each individual component via the isDisabled prop, as the components render HTML buttons	boolean	false	no
activeStyles	The styles of the active page button	ButtonProps	{}	no
normalStyles	The styles of the inactive page buttons	ButtonProps	{}	no
separatorStyles	The styles of the separator wrapper	ButtonProps	{}	no
outerLimit	The amount of pages to show at the start and at the end	number	0	no
innerLimit	The amount of pages to show from the currentPage backwards and forward	number	0	no
currentPage	Manually set the currentPage of the pagination	number	1	no

usePaginator

Options

Prop	Description	Type	Default	Required
total	The total amount of items obtained from a Backend call	number	0	no
initialState	Initial states for pagination values	InitialState		yes

Returned values

Prop	Description	Type	Default	Required
offset	Generic offset value generated if pageSize is provided	number	0	no
pagesQuantity	Automatically calculated based on total and pageSize. Keep in mind that you can pass this directly to Paginator. This is a commodity if you know the total	number	0	no
currentPage	The current page number	number		yes
pageSize	The amount of items per page	number	10	no
isDisabled	Disabled or enables all the pagination components	boolean	false	no
setPageSize	A setter for the pageSize value	Dispatch<SetStateAction >		no
setIsDisabled	A setter for the isDisabled value	Dispatch<SetStateAction >		no
setCurrentPage	A setter for the currentPage value	Dispatch<SetStateAction >		yes

Container

Container is a _Flex_ component, so any _FlexProps_ are accepted

PageGroup

PageGroup is a _Stack_ component, so any _StackProps_ are accepted

Previous

Previous is a _Button_ component, so any _ButtonProps_ are accepted

Next

Next is a _Button_ component, so any _ButtonProps_ are accepted

Usage

Minimal

This is the bare minimum set up you need to get it up and working

import React, { FC, ChangeEvent, useEffect, useState } from "react";
import { ChakraProvider } from "@chakra-ui/react";
import {
  Paginator,
  Container,
  Previous,
  Next,
  PageGroup,
  usePaginator
} from "chakra-paginator";

const Demo: FC = () => {
  const pagesQuantity = 12;
  const { currentPage, setCurrentPage } = usePaginator({
    initialState: { currentPage: 1 }
  });

  return (
    <ChakraProvider>
      <Paginator
        pagesQuantity={pagesQuantity}
        currentPage={currentPage}
        onPageChange={setCurrentPage}
      >
        <Container align="center" justify="space-between" w="full" p={4}>
          <Previous>
            Previous
            {/* Or an icon from `react-icons` */}
          </Previous>
          <PageGroup isInline align="center" />
          <Next>
            Next
            {/* Or an icon from `react-icons` */}
          </Next>
        </Container>
      </Paginator>
    </ChakraProvider>
  );
};

export default Demo;

+ From here on, the examples are only partial. You can think of them as modules you can add to the previous component
+ Merge them togheter and you would be adding the given functionality

Styling

Add styles to the possible components inside PageGroup

First: the styles for the unselected and selected page buttons
Second: the styles for the separator button

const normalStyles: ButtonProps = {
  w: 7,
  bg: "red.300"
  fontSize: "sm"
  _hover: {
    bg: "green.300"
  },
};

const activeStyles: ButtonProps = {
  w: 7,
  bg: "green.300"
  fontSize: "sm"
  _hover: {
    bg: "blue.300"
  },
};

const separatorStyles: ButtonProps = {
  w: 7,
  bg: "green.200"
};

<Paginator
  activeStyles={activeStyles}
  normalStyles={normalStyles}
  separatorStyles={separatorStyles}
>

Disabling

It's provided a commodity disable prop to disable/enable all your pagination components at once

const { isDisabled, setIsDisabled } = usePaginator({
  initialState: { isDisabled: false }
});

const handleDisableClick = () => {
  return setIsDisabled((oldState) => !oldState);
};

<Paginator
  isDisabled={isDisabled}
>

Page size

It's provided a commodity page size setter and getter

const { pageSize, setPageSize } = usePaginator({
  initialState: { pageSize: 5 }
});

const handlePageSizeChange = (event: ChangeEvent<HTMLSelectElement>) => {
  const pageSize = Number(event.target.value);

  setPageSize(pageSize);
};

<Paginator
  pageSize={pageSize}
>

Limits

You can trim the ammount of pages you show by passing both limits at the same time
You need to pass them both, otherwise no limits will be applied

const outerLimit = 2;
const innerLimit = 2;

<Paginator
  outerLimit={outerLimit}
  innerLimit={innerLimit}
>

Offset

It's possible that the API for the pagination you are consuming works with an offset
One it's calculated and provided for you using the pageSize and currentPage values

This is calculated with the next formula:

[currentPage * pageSize - pageSize]

currentPage === 1 && pageSize === 5 // offset = 0;
currentPage === 2 && pageSize === 5 // offset = 5;
currentPage === 3 && pageSize === 5 // offset = 10;

const { offset } = usePaginator({
  initialState: { pageSize: 5 }
});

fetchUsingOffset(pageSize, offset).then((data) => {
  // use data
});

Pages quantity

Keep in mind that if you know the total amount of items of the requested endpoint, which is not
a strange thing to be returned, you can use that to generate the pages quantity value for you

const { pagesQuantity } = usePaginator({
  total: 4021,
  initialState: { pageSize: 5 }
});

<Paginator
  pagesQuantity={pagesQuantity}
>

Full usage example

In this example you can see all the possible features provided by the library being applied
to show 10 pokemons names, with the ability to play with the page size and disable state

import React, { FC, ChangeEvent, useEffect, useState } from "react";
import {
  Grid,
  Center,
  Select,
  ButtonProps,
  Text,
  Button,
  ChakraProvider
} from "@chakra-ui/react";
import {
  Paginator,
  Container,
  Previous,
  usePaginator,
  Next,
  PageGroup
} from "chakra-paginator";

const fetchPokemons = (pageSize: number, offset: number) => {
  return fetch(
    `https://pokeapi.co/api/v2/pokemon?limit=${pageSize}&offset=${offset}`
  ).then((res) => res.json());
};

const Demo: FC = () => {
  // states
  const [pokemonsTotal, setPokemonsTotal] = useState<number | undefined>(
    undefined
  );
  const [pokemons, setPokemons] = useState<any[]>([]);

  // constants
  const outerLimit = 2;
  const innerLimit = 2;

  const {
    pagesQuantity,
    offset, 
    currentPage,
    setCurrentPage,
    setIsDisabled,
    isDisabled,
    pageSize,
    setPageSize
  } = usePaginator({
    total: pokemonsTotal,
    initialState: {
      pageSize: 5,
      isDisabled: false,
      currentPage: 1
    }
  });

  // effects
  useEffect(() => {
    fetchPokemons(pageSize, offset).then((pokemons) => {
      setPokemonsTotal(pokemons.count);
      setPokemons(pokemons.results);
    });
  }, [currentPage, pageSize, offset]);

  // styles
  const baseStyles: ButtonProps = {
    w: 7,
    fontSize: "sm"
  };

  const normalStyles: ButtonProps = {
    ...baseStyles,
    _hover: {
      bg: "green.300"
    },
    bg: "red.300"
  };

  const activeStyles: ButtonProps = {
    ...baseStyles,
    _hover: {
      bg: "blue.300"
    },
    bg: "green.300"
  };

  const separatorStyles: ButtonProps = {
    w: 7,
    bg: "green.200"
  };

  // handlers
  const handlePageChange = (nextPage: number) => {
    // -> request new data using the page number
    setCurrentPage(nextPage);
    console.log("request new data with ->", nextPage);
  };

  const handlePageSizeChange = (event: ChangeEvent<HTMLSelectElement>) => {
    const pageSize = Number(event.target.value);

    setPageSize(pageSize);
  };

  const handleDisableClick = () => {
    return setIsDisabled((oldState) => !oldState);
  };

  return (
    <ChakraProvider>
      <Paginator
        isDisabled={isDisabled}
        activeStyles={activeStyles}
        innerLimit={innerLimit}
        currentPage={currentPage}
        outerLimit={outerLimit}
        normalStyles={normalStyles}
        separatorStyles={separatorStyles}
        pagesQuantity={pagesQuantity}
        onPageChange={handlePageChange}
      >
        <Container align="center" justify="space-between" w="full" p={4}>
          <Previous>
            Previous
            {/* Or an icon from `react-icons` */}
          </Previous>
          <PageGroup isInline align="center" />
          <Next>
            Next
            {/* Or an icon from `react-icons` */}
          </Next>
        </Container>
      </Paginator>
      <Center w="full">
        <Button onClick={handleDisableClick}>Disable ON / OFF</Button>
        <Select w={40} ml={3} onChange={handlePageSizeChange}>
          <option value="10">10</option>
          <option value="25">25</option>
          <option value="50">50</option>
        </Select>
      </Center>
      <Grid
        templateRows="repeat(2, 1fr)"
        templateColumns="repeat(5, 1fr)"
        gap={3}
        px={20}
        mt={20}
      >
        {pokemons?.map(({ name }) => (
          <Center p={4} bg="green.100" key={name}>
            <Text>{name}</Text>
          </Center>
        ))}
      </Grid>
    </ChakraProvider>
  );
};

export default Demo;