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

import type { CurrentBlockType } 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 { $createCurrentBlockNode, CurrentBlockNode } from './node'

export const INSERT_CURRENT_BLOCK_COMMAND = createCommand('INSERT_CURRENT_BLOCK_COMMAND')
export const DELETE_CURRENT_BLOCK_COMMAND = createCommand('DELETE_CURRENT_BLOCK_COMMAND')

const CurrentBlock = memo(({ generatorType, onInsert, onDelete }: CurrentBlockType) => {
  const [editor] = useLexicalComposerContext()

  useEffect(() => {
    if (!editor.hasNodes([CurrentBlockNode]))
      throw new Error('CURRENTBlockPlugin: CURRENTBlock not registered on editor')

    return mergeRegister(
      editor.registerCommand(
        INSERT_CURRENT_BLOCK_COMMAND,
        () => {
          const currentBlockNode = $createCurrentBlockNode(generatorType)

          $insertNodes([currentBlockNode])

          if (onInsert) onInsert()

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

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

  return null
})
CurrentBlock.displayName = 'CurrentBlock'

export { CurrentBlock }
export { default as CurrentBlockReplacementBlock } from './current-block-replacement-block'
export { CurrentBlockNode } from './node'