dify/web/app/components/base/prompt-editor/plugins/query-block/index.tsx

import type { QueryBlockType } from '../../types'
import { useLexicalComposerContext } from '@lexical/react/LexicalComposerContext'
import { mergeRegister } from '@lexical/utils'
import { $insertNodes, COMMAND_PRIORITY_EDITOR, createCommand } from 'lexical'
import { memo, useEffect } from 'react'
import { $createQueryBlockNode, QueryBlockNode } from './node'

export const INSERT_QUERY_BLOCK_COMMAND = createCommand('INSERT_QUERY_BLOCK_COMMAND')
export const DELETE_QUERY_BLOCK_COMMAND = createCommand('DELETE_QUERY_BLOCK_COMMAND')
const QueryBlock = memo(({ onInsert, onDelete }: QueryBlockType) => {
  const [editor] = useLexicalComposerContext()

  useEffect(() => {
    if (!editor.hasNodes([QueryBlockNode]))
      throw new Error('QueryBlockPlugin: QueryBlock not registered on editor')

    return mergeRegister(
      editor.registerCommand(
        INSERT_QUERY_BLOCK_COMMAND,
        () => {
          const contextBlockNode = $createQueryBlockNode()

          $insertNodes([contextBlockNode])
          if (onInsert) onInsert()

          return true
        },
        COMMAND_PRIORITY_EDITOR,
      ),
      editor.registerCommand(
        DELETE_QUERY_BLOCK_COMMAND,
        () => {
          if (onDelete) onDelete()

          return true
        },
        COMMAND_PRIORITY_EDITOR,
      ),
    )
  }, [editor, onInsert, onDelete])

  return null
})
QueryBlock.displayName = 'QueryBlock'

export { QueryBlock }
export { QueryBlockNode } from './node'
export { default as QueryBlockReplacementBlock } from './query-block-replacement-block'