forked from facebook/react
/
Profiler.js
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/
Profiler.js
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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
import * as React from 'react';
import {Fragment, useContext} from 'react';
import {ModalDialog} from '../ModalDialog';
import {ProfilerContext} from './ProfilerContext';
import TabBar from '../TabBar';
import ClearProfilingDataButton from './ClearProfilingDataButton';
import CommitFlamegraph from './CommitFlamegraph';
import CommitRanked from './CommitRanked';
import Interactions from './Interactions';
import RootSelector from './RootSelector';
import RecordToggle from './RecordToggle';
import ReloadAndProfileButton from './ReloadAndProfileButton';
import ProfilingImportExportButtons from './ProfilingImportExportButtons';
import SnapshotSelector from './SnapshotSelector';
import SidebarCommitInfo from './SidebarCommitInfo';
import SidebarInteractions from './SidebarInteractions';
import SidebarSelectedFiberInfo from './SidebarSelectedFiberInfo';
import SettingsModal from 'react-devtools-shared/src/devtools/views/Settings/SettingsModal';
import SettingsModalContextToggle from 'react-devtools-shared/src/devtools/views/Settings/SettingsModalContextToggle';
import {SettingsModalContextController} from 'react-devtools-shared/src/devtools/views/Settings/SettingsModalContext';
import portaledContent from '../portaledContent';
import Store from '../../store';
import styles from './Profiler.css';
function Profiler(_: {||}) {
const {
didRecordCommits,
isProcessingData,
isProfiling,
selectedCommitIndex,
selectedFiberID,
selectedTabID,
selectTab,
supportsProfiling,
} = useContext(ProfilerContext);
let view = null;
if (didRecordCommits) {
switch (selectedTabID) {
case 'flame-chart':
view = <CommitFlamegraph />;
break;
case 'ranked-chart':
view = <CommitRanked />;
break;
case 'interactions':
view = <Interactions />;
break;
default:
break;
}
} else if (isProfiling) {
view = <RecordingInProgress />;
} else if (isProcessingData) {
view = <ProcessingData />;
} else if (supportsProfiling) {
view = <NoProfilingData />;
} else {
view = <ProfilingNotSupported />;
}
let sidebar = null;
if (!isProfiling && !isProcessingData && didRecordCommits) {
switch (selectedTabID) {
case 'interactions':
sidebar = <SidebarInteractions />;
break;
case 'flame-chart':
case 'ranked-chart':
// TRICKY
// Handle edge case where no commit is selected because of a min-duration filter update.
// In that case, the selected commit index would be null.
// We could still show a sidebar for the previously selected fiber,
// but it would be an odd user experience.
// TODO (ProfilerContext) This check should not be necessary.
if (selectedCommitIndex !== null) {
if (selectedFiberID !== null) {
sidebar = <SidebarSelectedFiberInfo />;
} else {
sidebar = <SidebarCommitInfo />;
}
}
break;
default:
break;
}
}
return (
<SettingsModalContextController>
<div className={styles.Profiler}>
<div className={styles.LeftColumn}>
<div className={styles.Toolbar}>
<RecordToggle disabled={!supportsProfiling} />
<ReloadAndProfileButton />
<ClearProfilingDataButton />
<ProfilingImportExportButtons />
<div className={styles.VRule} />
<TabBar
currentTab={selectedTabID}
id="Profiler"
selectTab={selectTab}
tabs={tabs}
type="profiler"
/>
<RootSelector />
<div className={styles.Spacer} />
<SettingsModalContextToggle />
{didRecordCommits && (
<Fragment>
<div className={styles.VRule} />
<SnapshotSelector />
</Fragment>
)}
</div>
<div className={styles.Content}>
{view}
<ModalDialog />
</div>
</div>
<div className={styles.RightColumn}>{sidebar}</div>
<SettingsModal />
</div>
</SettingsModalContextController>
);
}
const tabs = [
{
id: 'flame-chart',
icon: 'flame-chart',
label: 'Flamegraph',
title: 'Flamegraph chart',
},
{
id: 'ranked-chart',
icon: 'ranked-chart',
label: 'Ranked',
title: 'Ranked chart',
},
{
id: 'interactions',
icon: 'interactions',
label: 'Interactions',
title: 'Profiled interactions',
},
];
const NoProfilingData = () => (
<div className={styles.Column}>
<div className={styles.Header}>No profiling data has been recorded.</div>
<div className={styles.Row}>
Click the record button <RecordToggle /> to start recording.
</div>
</div>
);
const ProfilingNotSupported = () => (
<div className={styles.Column}>
<div className={styles.Header}>Profiling not supported.</div>
<p className={styles.Paragraph}>
Profiling support requires either a development or production-profiling
build of React v16.5+.
</p>
<p className={styles.Paragraph}>
Learn more at{' '}
<a
className={styles.Link}
href="https://reactjs.org/link/profiling"
rel="noopener noreferrer"
target="_blank">
reactjs.org/link/profiling
</a>
.
</p>
</div>
);
const ProcessingData = () => (
<div className={styles.Column}>
<div className={styles.Header}>Processing data...</div>
<div className={styles.Row}>This should only take a minute.</div>
</div>
);
const RecordingInProgress = () => (
<div className={styles.Column}>
<div className={styles.Header}>Profiling is in progress...</div>
<div className={styles.Row}>
Click the record button <RecordToggle /> to stop recording.
</div>
</div>
);
function onErrorRetry(store: Store) {
// If an error happened in the Profiler,
// we should clear data on retry (or it will just happen again).
store.profilerStore.profilingData = null;
}
export default portaledContent(Profiler, onErrorRetry);