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#3 Compound Components #17

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#3 Compound Components #17

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26ef400
impl. compound components
ohansemmanuel Oct 28, 2019
71ad661
Merge branch '02' into 03
ohansemmanuel Jan 7, 2020
bacdec0
update #03
ohansemmanuel Jan 14, 2020
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63 changes: 47 additions & 16 deletions showcase/src/patterns/index.js
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Original file line number Diff line number Diff line change
@@ -1,4 +1,11 @@
import React, { useState, useCallback, useLayoutEffect } from 'react'
import React, {
useState,
useCallback,
useLayoutEffect,
useContext,
useMemo,
createContext
} from 'react'

import mojs from 'mo-js'
import { generateRandomNumber } from '../utils/generateRandomNumber'
Expand Down Expand Up @@ -118,7 +125,10 @@ const initialState = {
isClicked: false
}

const MediumClap = () => {
const MediumClapContext = createContext()
const { Provider } = MediumClapContext

const MediumClap = ({ children }) => {
const MAXIMUM_USER_CLAP = 50
const [clapState, setClapState] = useState(initialState)
const { count, countTotal, isClicked } = clapState
Expand Down Expand Up @@ -151,17 +161,25 @@ const MediumClap = () => {
})
}

const memoizedValue = useMemo(
() => ({
...clapState,
setRef
}),
[clapState, setRef]
)

return (
<button
ref={setRef}
data-refkey='clapRef'
className={styles.clap}
onClick={handleClapClick}
>
<ClapIcon isClicked={isClicked} />
<ClapCount count={count} setRef={setRef} />
<CountTotal countTotal={countTotal} setRef={setRef} />
</button>
<Provider value={memoizedValue}>
<button
ref={setRef}
data-refkey='clapRef'
className={styles.clap}
onClick={handleClapClick}
>
{children}
</button>
</Provider>
)
}

Expand All @@ -170,7 +188,8 @@ const MediumClap = () => {
Smaller Component used by <MediumClap />
==================================== **/

const ClapIcon = ({ isClicked }) => {
const ClapIcon = () => {
const { isClicked } = useContext(MediumClapContext)
return (
<span>
<svg
Expand All @@ -185,29 +204,41 @@ const ClapIcon = ({ isClicked }) => {
</span>
)
}
const ClapCount = ({ count, setRef }) => {
const ClapCount = () => {
const { count, setRef } = useContext(MediumClapContext)
return (
<span ref={setRef} data-refkey='clapCountRef' className={styles.count}>
+{count}
</span>
)
}
const CountTotal = ({ countTotal, setRef }) => {
const CountTotal = () => {
const { countTotal, setRef } = useContext(MediumClapContext)
return (
<span ref={setRef} data-refkey='clapTotalRef' className={styles.total}>
{countTotal}
</span>
)
}

MediumClap.Icon = ClapIcon
MediumClap.Count = ClapCount
MediumClap.Total = CountTotal

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MediumClap.Icon = ClapIcon
MediumClap.Count = ClapCount
MediumClap.Total = CountTotal

This is completely optional. You may export the child components directly - without adding them as publicly accessible properties on the Parent component.

/** ====================================
* 🔰USAGE
Below's how a potential user
may consume the component API
==================================== **/

const Usage = () => {
return <MediumClap />
return (
<MediumClap>
<MediumClap.Icon />
<MediumClap.Total />
<MediumClap.Count />
</MediumClap>
)
}

export default Usage