Example: toolbar

import 'prosekit/basic/style.css'
import 'prosekit/basic/typography.css'

import { createEditor } from 'prosekit/core'
import { ProseKit } from 'prosekit/react'
import { useMemo } from 'react'

import { defineExtension } from './extension'
import Toolbar from './toolbar'

export default function Editor() {
  const editor = useMemo(() => {
    const extension = defineExtension()
    return createEditor({ extension })
  }, [])

  return (
    <ProseKit editor={editor}>
      <div className='box-border h-full w-full min-h-36 overflow-y-hidden overflow-x-hidden rounded-md border border-solid border-gray-200 shadow dark:border-zinc-700 flex flex-col bg-white dark:bg-gray-950'>
        <Toolbar />
        <div className='relative w-full flex-1 box-border overflow-y-scroll'>
          <div ref={editor.mount} className='ProseMirror box-border min-h-full px-[max(4rem,_calc(50%-20rem))] py-8 outline-none outline-0 [&_span[data-mention="user"]]:text-blue-500 [&_span[data-mention="tag"]]:text-violet-500'></div>
        </div>
      </div>
    </ProseKit>
  )
}

import { defineBasicExtension } from 'prosekit/basic'
import { union } from 'prosekit/core'

export function defineExtension() {
  return union(defineBasicExtension())
}

export type EditorExtension = ReturnType<typeof defineExtension>

import { useEditor } from 'prosekit/react'

import Button from './button'
import type { EditorExtension } from './extension'
import { ImageUploadPopover } from './image-upload-popover'

export default function Toolbar() {
  const editor = useEditor<EditorExtension>({ update: true })

  return (
    <div className='z-2 box-border border-gray-200 dark:border-gray-800 border-solid border-l-0 border-r-0 border-t-0 border-b flex flex-wrap gap-1 p-2 items-center'>
      <Button
        pressed={false}
        disabled={!editor.commands.undo.canExec()}
        onClick={editor.commands.undo}
        tooltip="Undo"
      >
        <div className='i-lucide-undo-2 h-5 w-5' />
      </Button>

      <Button
        pressed={false}
        disabled={!editor.commands.redo.canExec()}
        onClick={editor.commands.redo}
        tooltip="Redo"
      >
        <div className='i-lucide-redo-2 h-5 w-5' />
      </Button>

      <Button
        pressed={editor.marks.bold.isActive()}
        disabled={!editor.commands.toggleBold.canExec()}
        onClick={editor.commands.toggleBold}
        tooltip="Bold"
      >
        <div className='i-lucide-bold h-5 w-5' />
      </Button>

      <Button
        pressed={editor.marks.italic.isActive()}
        disabled={!editor.commands.toggleItalic.canExec()}
        onClick={editor.commands.toggleItalic}
        tooltip="Italic"
      >
        <div className='i-lucide-italic h-5 w-5' />
      </Button>

      <Button
        pressed={editor.nodes.heading.isActive({ level: 1 })}
        disabled={!editor.commands.toggleHeading.canExec({ level: 1 })}
        onClick={() => editor.commands.toggleHeading({ level: 1 })}
        tooltip="Heading 1"
      >
        <div className='i-lucide-heading-1 h-5 w-5' />
      </Button>

      <Button
        pressed={editor.nodes.heading.isActive({ level: 2 })}
        disabled={!editor.commands.toggleHeading.canExec({ level: 2 })}
        onClick={() => editor.commands.toggleHeading({ level: 2 })}
        tooltip="Heading 2"
      >
        <div className='i-lucide-heading-2 h-5 w-5' />
      </Button>

      <Button
        pressed={editor.nodes.heading.isActive({ level: 3 })}
        disabled={!editor.commands.toggleHeading.canExec({ level: 3 })}
        onClick={() => editor.commands.toggleHeading({ level: 3 })}
        tooltip="Heading 3"
      >
        <div className='i-lucide-heading-3 h-5 w-5' />
      </Button>

      <ImageUploadPopover
        disabled={!editor.commands.insertImage.canExec()}
        tooltip="Insert Image"
      >
        <div className='i-lucide-image h-5 w-5' />
      </ImageUploadPopover>
    </div>
  )
}

import { useEditor } from 'prosekit/react'
import {
  PopoverContent,
  PopoverRoot,
  PopoverTrigger,
} from 'prosekit/react/popover'
import {
  useState,
  type FC,
  type ReactNode,
} from 'react'

import Button from './button'
import type { EditorExtension } from './extension'

export const ImageUploadPopover: FC<{
  tooltip: string
  disabled: boolean
  children: ReactNode
}> = ({ tooltip, disabled, children }) => {
  const [open, setOpen] = useState(false)
  const [webUrl, setWebUrl] = useState('')
  const [objectUrl, setObjectUrl] = useState('')
  const url = webUrl || objectUrl

  const editor = useEditor<EditorExtension>()

  const handleFileChange: React.ChangeEventHandler<HTMLInputElement> = (
    event,
  ) => {
    const file = event.target.files?.[0]

    if (file) {
      setObjectUrl(URL.createObjectURL(file))
      setWebUrl('')
    } else {
      setObjectUrl('')
    }
  }

  const handleWebUrlChange: React.ChangeEventHandler<HTMLInputElement> = (
    event,
  ) => {
    const url = event.target.value

    if (url) {
      setWebUrl(url)
      setObjectUrl('')
    } else {
      setWebUrl('')
    }
  }

  const deferResetState = () => {
    setTimeout(() => {
      setWebUrl('')
      setObjectUrl('')
    }, 300)
  }

  const handleSubmit = () => {
    editor.commands.insertImage({ src: url })
    deferResetState()
    setOpen(false)
  }

  const handleOpenChange = (open: boolean) => {
    if (!open) {
      deferResetState()
    }
    setOpen(open)
  }

  return (
    <PopoverRoot open={open} onOpenChange={handleOpenChange}>
      <PopoverTrigger>
        <Button pressed={open} disabled={disabled} tooltip={tooltip}>
          {children}
        </Button>
      </PopoverTrigger>

      <PopoverContent className='flex flex-col gap-y-4 p-6 text-sm w-sm z-10 box-border rounded-lg border border-gray-200 dark:border-gray-800 bg-white dark:bg-gray-950 shadow-lg [&:not([data-state])]:hidden will-change-transform data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=open]:fade-in-0 data-[state=closed]:fade-out-0 data-[state=open]:zoom-in-95 data-[state=closed]:zoom-out-95 data-[state=open]:animate-duration-150 data-[state=closed]:animate-duration-200 data-[side=bottom]:slide-in-from-top-2 data-[side=bottom]:slide-out-to-top-2 data-[side=left]:slide-in-from-right-2 data-[side=left]:slide-out-to-right-2 data-[side=right]:slide-in-from-left-2 data-[side=right]:slide-out-to-left-2 data-[side=top]:slide-in-from-bottom-2 data-[side=top]:slide-out-to-bottom-2'>
        {objectUrl ? null : (
          <>
            <label>Embed Link</label>
            <input
              className='flex h-9 rounded-md w-full bg-white dark:bg-gray-950 px-3 py-2 text-sm placeholder:text-gray-500 dark:placeholder:text-gray-500 transition border box-border border-gray-200 dark:border-gray-800 border-solid ring-0 ring-transparent focus-visible:ring-2 focus-visible:ring-gray-900 dark:focus-visible:ring-gray-300 focus-visible:ring-offset-0 outline-none focus-visible:outline-none file:border-0 file:bg-transparent file:text-sm file:font-medium disabled:cursor-not-allowed disabled:opacity-50'
              placeholder="Paste the image link..."
              type="url"
              value={webUrl}
              onChange={handleWebUrlChange}
            />
          </>
        )}

        {webUrl ? null : (
          <>
            <label>Upload</label>
            <input
              className='flex h-9 rounded-md w-full bg-white dark:bg-gray-950 px-3 py-2 text-sm placeholder:text-gray-500 dark:placeholder:text-gray-500 transition border box-border border-gray-200 dark:border-gray-800 border-solid ring-0 ring-transparent focus-visible:ring-2 focus-visible:ring-gray-900 dark:focus-visible:ring-gray-300 focus-visible:ring-offset-0 outline-none focus-visible:outline-none file:border-0 file:bg-transparent file:text-sm file:font-medium disabled:cursor-not-allowed disabled:opacity-50'
              accept="image/*"
              type="file"
              onChange={handleFileChange}
            />
          </>
        )}

        {url
          ? (
            <button className='inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium ring-offset-white dark:ring-offset-gray-950 transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-gray-900 dark:focus-visible:ring-gray-300 focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50 border-0 bg-gray-900 dark:bg-gray-50 text-gray-50 dark:text-gray-900 hover:bg-gray-900/90 dark:hover:bg-gray-50/90 h-10 px-4 py-2 w-full' onClick={handleSubmit}>
              Insert Image
            </button>
          )
          : null}
      </PopoverContent>
    </PopoverRoot>
  )
}

import {
  TooltipContent,
  TooltipRoot,
  TooltipTrigger,
} from 'prosekit/react/tooltip'
import type { ReactNode } from 'react'

export default function Button({
  pressed,
  disabled,
  onClick,
  tooltip,
  children,
}: {
  pressed?: boolean
  disabled?: boolean
  onClick?: VoidFunction
  tooltip?: string
  children: ReactNode
}) {
  return (
    <TooltipRoot>
      <TooltipTrigger className='block'>
        <button
          data-state={pressed ? 'on' : 'off'}
          disabled={disabled}
          onClick={() => onClick?.()}
          onMouseDown={(event) => event.preventDefault()}
          className='outline-unset focus-visible:outline-unset flex items-center justify-center rounded-md p-2 font-medium transition focus-visible:ring-2 text-sm focus-visible:ring-gray-900 dark:focus-visible:ring-gray-300 disabled:pointer-events-none min-w-9 min-h-9 disabled:opacity-50 hover:disabled:opacity-50 bg-transparent hover:bg-gray-100 dark:hover:bg-gray-800 data-[state=on]:bg-gray-200 dark:data-[state=on]:bg-gray-700'
        >
          {children}
          {tooltip ? <span className="sr-only">{tooltip}</span> : null}
        </button>
      </TooltipTrigger>
      {tooltip
        ? (
          <TooltipContent className='z-50 overflow-hidden rounded-md border border-solid bg-gray-900 dark:bg-gray-50 px-3 py-1.5 text-xs text-gray-50 dark:text-gray-900 shadow-sm [&:not([data-state])]:hidden will-change-transform data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=open]:fade-in-0 data-[state=closed]:fade-out-0 data-[state=open]:zoom-in-95 data-[state=closed]:zoom-out-95 data-[state=open]:animate-duration-150 data-[state=closed]:animate-duration-200 data-[side=bottom]:slide-in-from-top-2 data-[side=bottom]:slide-out-to-top-2 data-[side=left]:slide-in-from-right-2 data-[side=left]:slide-out-to-right-2 data-[side=right]:slide-in-from-left-2 data-[side=right]:slide-out-to-left-2 data-[side=top]:slide-in-from-bottom-2 data-[side=top]:slide-out-to-bottom-2'>
            {tooltip}
          </TooltipContent>
        )
        : null}
    </TooltipRoot>
  )
}