react-brackets

Dynamic bracket component, usable for brackets such as single elimination and double elimination

Install

via npm

npm install --save react-brackets

via yarn

yarn add --save react-brackets

Usage

The simplest usage of this component is

import { Bracket, RoundProps } from 'react-brackets';

const rounds: RoundProps[] = [
  {
    title: 'Round one',
    seeds: [
      {
        id: 1,
        date: new Date().toDateString(),
        teams: [{ name: 'Team A' }, { name: 'Team B' }],
      },
      {
        id: 2,
        date: new Date().toDateString(),
        teams: [{ name: 'Team C' }, { name: 'Team D' }],
      },
    ],
  },
  {
    title: 'Round one',
    seeds: [
      {
        id: 3,
        date: new Date().toDateString(),
        teams: [{ name: 'Team A' }, { name: 'Team C' }],
      },
    ],
  },
];

const Component = () => {
  return <Bracket rounds={rounds} />;
};

The core shape is similar to the above, since we can customize seeds and titles, you can pass any additional data to a seed or treat the title as a component.

modifying a title of the round is so simple,

import { Bracket, RoundProps } from 'react-brackets';
import React from 'react';

const Component = () => {
  //....
  return (
    <Bracket
      rounds={rounds}
      roundTitleComponent={(title: React.ReactNode, roundIndex: number) => {
        return <div style={{ textAlign: 'center', color: 'red' }}>{title}</div>;
      }}
    />
  );
};

Customizing a seed on the other hand is a little bit more complicated, yet still easy, because we need to let the bracket tree to have a consitent design

Any additional data you pass inside a seed object is accessibile via renderSeedComponent

import { Bracket, RoundProps, Seed, SeedItem, SeedTeam, RenderSeedProps } from 'react-brackets';
import React from 'react';

const CustomSeed = ({seed, breakpoint, roundIndex, seedIndex}: RenderSeedProps) => {
  // breakpoint passed to Bracket component
  // to check if mobile view is triggered or not

  // mobileBreakpoint is required to be passed down to a seed
  return (
    <Seed mobileBreakpoint={breakpoint} style={{ fontSize: 12 }}>
      <SeedItem>
        <div>
          <SeedTeam style={{ color: 'red' }}>{seed.teams[0]?.name || 'NO TEAM '}</SeedTeam>
          <SeedTeam>{seed.teams[1]?.name || 'NO TEAM '}</SeedTeam>
        </div>
      </SeedItem>
    </Seed>
  );
};

const Component = () => {
  //....
  return <Bracket rounds={rounds} renderSeedComponent={CustomSeed} />;
};

How about if I want to use this component for double elimination losing bracket? the current Seed component only works on single elimination, the answer is fairly simple as well.

import { Bracket, RoundProps, Seed, SingleLineSeed, SeedItem, SeedTeam, RenderSeedProps } from 'react-brackets';
import React from 'react';

const CustomSeed = ({seed, breakpoint, roundIndex, seedIndex}: RenderSeedProps) => {
  // ------ assuming rounds is the losers brackets rounds ------
  // losers rounds usually got some identical seeds amount like (2 - 2 - 1 - 1)

  const isLineConnector = rounds[roundIndex].seeds.length === rounds[roundIndex + 1]?.seeds.length;

  const Wrapper = isLineConnector ? SingleLineSeed : Seed;

  // mobileBreakpoint is required to be passed down to a seed
  return (
    <Wrapper mobileBreakpoint={breakpoint} style={{ fontSize: 12 }}>
      <SeedItem>
        <div>
          <SeedTeam style={{ color: 'red' }}>{seed.teams[0]?.name || 'NO TEAM '}</SeedTeam>
          <SeedTeam>{seed.teams[1]?.name || 'NO TEAM '}</SeedTeam>
        </div>
      </SeedItem>
    </Wrapper>
  );
};

const Component = () => {
  //....
  return <Bracket rounds={rounds} renderSeedComponent={CustomSeed} />;
};

Two-sided Single Elimination

How to render Single Elimination as a two-sided bracket? You must set twoSided to true, and structure your custom seed render component like below, if you have a custom seed render component.

import { Bracket, RoundProps, Seed, SeedItem, SeedTeam, RenderSeedProps } from 'react-brackets';
import React from 'react';

const CustomSeed = ({seed, breakpoint, roundIndex, seedIndex, isMiddleOfTwoSided}: RenderSeedProps) => {
  // breakpoint passed to Bracket component
  // to check if mobile view is triggered or not

  // mobileBreakpoint is required to be passed down to a seed
  const Wrapper = isMiddleOfTwoSided ? SingleLineSeed : Seed
  return (
    <Wrapper mobileBreakpoint={breakpoint} style={{ fontSize: 12 }}>
      <SeedItem>
        <div>
          <SeedTeam style={{ color: 'red' }}>{seed.teams[0]?.name || 'NO TEAM '}</SeedTeam>
          <SeedTeam>{seed.teams[1]?.name || 'NO TEAM '}</SeedTeam>
        </div>
      </SeedItem>
    </Wrapper>
  );
};

const Component = () => {
  //....
  return <Bracket rounds={rounds} renderSeedComponent={CustomSeed} twoSided={true} />;
};

Bracket Props

| Prop | Type | Description | |---------------------| -------------------- |--------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | rounds | RoundProps[] | Array of rounds, each round has {title,array of seeds}, if you're not using a custom seed render, each seed needs an array of teams, each team should have a name | | mobileBreakpoint | number | This bracket supports responsive design, on window reaching this size, it will trigger mobile swipable view, if you want to disable it, you can pass 0, (default is 992) | | rtl | boolean | Direction of the bracket as RTL (default is LTR) | | twoSided | boolean | Sets Single elimination to be two sided if true. Default is False | | roundClassName | string | Round wrapper className | | bracketClassName | string | The bracket className | | renderSeedComponent | functional component | Custom render for every seed | | roundTitleComponent | functional component | Custom render for every round title | | swipeableProps | SwipeableProps | Please check this React Swipeable Views |

For detailed examples, you can clone this repo then:

you can skip starting the root folder, but if you want to modify the library you have to run it.

yarn

then

yarn start

then open a new terminal

cd example

then

yarn

lastly

yarn start

License

MIT © mohammadou1