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Merge pull request #274 from bvaughn/commit-priority-level
Show commit priority levels in Profiler UI (if available)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| // @flow | ||
|
|
||
| import React, { Fragment, useCallback, useState } from 'react'; | ||
| import { | ||
| unstable_IdlePriority as IdlePriority, | ||
| unstable_LowPriority as LowPriority, | ||
| unstable_runWithPriority as runWithPriority, | ||
| } from 'scheduler'; | ||
|
|
||
| export default function PriorityLevels() { | ||
| const [defaultPriority, setDefaultPriority] = useState<boolean>(false); | ||
| const [idlePriority, setIdlePriority] = useState<boolean>(false); | ||
| const [normalPriority, setLowPriority] = useState<boolean>(false); | ||
|
|
||
| const resetSequence = useCallback(() => { | ||
| setDefaultPriority(false); | ||
| setLowPriority(false); | ||
| setIdlePriority(false); | ||
| }, []); | ||
|
|
||
| const startSequence = useCallback(() => { | ||
| setDefaultPriority(true); | ||
| runWithPriority(LowPriority, () => setLowPriority(true)); | ||
| runWithPriority(IdlePriority, () => setIdlePriority(true)); | ||
| }, []); | ||
|
|
||
| const labels = []; | ||
| if (defaultPriority) { | ||
| labels.push('(default priority)'); | ||
| } | ||
| if (normalPriority) { | ||
| labels.push('Low Priority'); | ||
| } | ||
| if (idlePriority) { | ||
| labels.push('Idle Priority'); | ||
| } | ||
|
|
||
| return ( | ||
| <Fragment> | ||
| <h1>Priority Levels</h1> | ||
| <button onClick={resetSequence}>Reset</button> | ||
| <button onClick={startSequence}>Start sequence</button> | ||
| <span>{labels.join(', ')}</span> | ||
| </Fragment> | ||
| ); | ||
| } |
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