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metamask-extension/ui/app/hooks/useMethodData.js
Brad Decker 706dc02cb4
Implement new transaction list design (#8564)
Co-authored-by: Whymarrh Whitby <whymarrh.whitby@gmail.com>
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
2020-05-26 15:49:11 -05:00

31 lines
1.3 KiB
JavaScript

import { useEffect, useCallback } from 'react'
import { useDispatch, useSelector } from 'react-redux'
import { getContractMethodData as getContractMethodDataAction } from '../store/actions'
import { getKnownMethodData } from '../selectors/selectors'
/**
* Access known method data and attempt to resolve unknown method data
*
* encapsulates an effect that will fetch methodData when the component mounts,
* and subsequently anytime the provided data attribute changes. Note that
* the getContractMethodData action handles over-fetching prevention, first checking
* if the data is in the store and returning it directly. While using this hook
* in multiple places in a tree for the same data will create extra event ticks and
* hit the action more frequently, it should only ever result in a single store update
* @param {string} data the transaction data to find method data for
* @return {Object} contract method data
*/
export function useMethodData (data) {
const dispatch = useDispatch()
const knownMethodData = useSelector((state) => getKnownMethodData(state, data))
const getContractMethodData = useCallback((methodData) => dispatch(getContractMethodDataAction(methodData)), [dispatch])
useEffect(() => {
if (data) {
getContractMethodData(data)
}
}, [getContractMethodData, data])
return knownMethodData
}