CommitFlamegraph.js — react Source File

Source Code

/**
 * Copyright (c) Meta Platforms, Inc. and 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 {forwardRef, useCallback, useContext, useMemo, useState} from 'react';
import AutoSizer from 'react-virtualized-auto-sizer';
import {FixedSizeList} from 'react-window';
import {ProfilerContext} from './ProfilerContext';
import NoCommitData from './NoCommitData';
import CommitFlamegraphListItem from './CommitFlamegraphListItem';
import HoveredFiberInfo from './HoveredFiberInfo';
import {scale} from './utils';
import {useHighlightHostInstance} from '../hooks';
import {StoreContext} from '../context';
import {SettingsContext} from '../Settings/SettingsContext';
import Tooltip from './Tooltip';

import styles from './CommitFlamegraph.css';

import type {TooltipFiberData} from './HoveredFiberInfo';
import type {ChartData, ChartNode} from './FlamegraphChartBuilder';
import type {CommitTree} from './types';

export type ItemData = {
  chartData: ChartData,
  onElementMouseEnter: (fiberData: TooltipFiberData) => void,
  onElementMouseLeave: () => void,
  scaleX: (value: number, fallbackValue: number) => number,
  selectedChartNode: ChartNode | null,
  selectedChartNodeIndex: number,
  selectFiber: (id: number | null, name: string | null) => void,
  width: number,
};

export default function CommitFlamegraphAutoSizer(_: {}): React.Node {
  const {profilerStore} = useContext(StoreContext);
  const {rootID, selectedCommitIndex, selectFiber} =
    useContext(ProfilerContext);
  const {profilingCache} = profilerStore;

  const deselectCurrentFiber = useCallback(
    (event: $FlowFixMe) => {
      event.stopPropagation();
      selectFiber(null, null);
    },
    [selectFiber],
  );

  let commitTree: CommitTree | null = null;
  let chartData: ChartData | null = null;
  if (selectedCommitIndex !== null) {
    commitTree = profilingCache.getCommitTree({
      commitIndex: selectedCommitIndex,
      rootID: ((rootID: any): number),
// ... (151 more lines)