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我想将功能组件转换为类组件。模态代码在下面的办公织物类组件中给出。我想在类组件中进行转换。我是 React 的新手，在将功能转换为类组件时遇到了一些困难。

import * as React from 'react';
import { Dialog, DialogType, DialogFooter } from 'office-ui-fabric-react/lib/Dialog';
import { PrimaryButton, DefaultButton } from 'office-ui-fabric-react/lib/Button';
import { hiddenContentStyle, mergeStyles } from 'office-ui-fabric-react/lib/Styling';
import { Toggle } from 'office-ui-fabric-react/lib/Toggle';
import { ContextualMenu } from 'office-ui-fabric-react/lib/ContextualMenu';
import { useId, useBoolean } from '@uifabric/react-hooks';

const dialogStyles = { main: { maxWidth: 450 } };
const dragOptions = {
  moveMenuItemText: 'Move',
  closeMenuItemText: 'Close',
  menu: ContextualMenu,
};
const screenReaderOnly = mergeStyles(hiddenContentStyle);
const dialogContentProps = {
  type: DialogType.normal,
  title: 'Missing Subject',
  closeButtonAriaLabel: 'Close',
  subText: 'Do you want to send this message without a subject?',
};

export const DialogBasicExample: React.FunctionComponent = () => {
  const [hideDialog, { toggle: toggleHideDialog }] = useBoolean(true);
  const [isDraggable, { toggle: toggleIsDraggable }] = useBoolean(false);
  const labelId: string = useId('dialogLabel');
  const subTextId: string = useId('subTextLabel');

  const modalProps = React.useMemo(
    () => ({
      titleAriaId: labelId,
      subtitleAriaId: subTextId,
      isBlocking: false,
      styles: dialogStyles,
      dragOptions: isDraggable ? dragOptions : undefined,
    }),
    [isDraggable],
  );

  return (
    <>
      <Toggle label="Is draggable" onChange={toggleIsDraggable} checked={isDraggable} />
      <DefaultButton secondaryText="Opens the Sample Dialog" onClick={toggleHideDialog} text="Open Dialog" />
      <label id={labelId} className={screenReaderOnly}>
        My sample label
      </label>
      <label id={subTextId} className={screenReaderOnly}>
        My sample description
      </label>

      <Dialog
        hidden={hideDialog}
        onDismiss={toggleHideDialog}
        dialogContentProps={dialogContentProps}
        modalProps={modalProps}
      >
        <DialogFooter>
          <PrimaryButton onClick={toggleHideDialog} text="Send" />
          <DefaultButton onClick={toggleHideDialog} text="Don't send" />
        </DialogFooter>
      </Dialog>
    </>
  );
};
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