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Hook-based API #275
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Hook-based API #275
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| import { useLayoutEffect, useState, useMemo } from 'react'; | ||
| import { head, prop, compose, pick, objOf, mergeDeepRight } from 'ramda'; | ||
| import { stream, scan } from 'flyd'; | ||
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| /** | ||
| * A simple debouncing function | ||
| */ | ||
| const debounce = (fn, delay) => { | ||
| let timeout; | ||
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| return function (...args) { | ||
| const functionCall = () => fn.apply(this, args); | ||
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| timeout && clearTimeout(timeout); | ||
| timeout = setTimeout(functionCall, delay); | ||
| }; | ||
| }; | ||
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| const getSizeForLayout = compose(objOf('layout'), pick(['width', 'height']), prop('contentRect'), head); | ||
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| export default function usePlotly() { | ||
| const updates = useMemo(stream, []); | ||
| const appendData = useMemo(stream, []); | ||
| const plotlyState = useMemo( | ||
| () => scan(mergeDeepRight, { data: [], config: {}, layout: {} }, updates), | ||
| [] | ||
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| ); | ||
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| const observer = new ResizeObserver(debounce(compose(updates, getSizeForLayout), 100)); | ||
| const [internalRef, setRef] = useState(null); | ||
| useLayoutEffect(() => { | ||
| if (internalRef) { | ||
| observer.observe(internalRef); | ||
| const endS = plotlyState.map(state => { | ||
| Plotly.react(internalRef, state); | ||
| }); | ||
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| const endAppend = appendData.map(({ data, tracePos }) => Plotly.extendTraces(internalRef, data, tracePos)); | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Since you've implemented |
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| return () => { | ||
| Plotly.purge(internalRef); | ||
| observer.unobserve(internalRef); | ||
| endAppend.end(true); | ||
| endS.end(true); | ||
| }; | ||
| } | ||
| }, [internalRef, plotlyState, updates, appendData]); | ||
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| return { ref: setRef, updates, appendData }; | ||
| } | ||