Files
CodeNomad/packages/ui/src/components/prompt-input/usePromptKeyDown.ts

297 lines
9.3 KiB
TypeScript

import type { Accessor } from "solid-js"
import type { Attachment } from "../../types/attachment"
import type { PromptMode } from "./types"
import {
createImagePlaceholderRegex,
createMentionRegex,
createPastedPlaceholderRegex,
} from "./attachmentPlaceholders"
export type UsePromptKeyDownOptions = {
getTextarea: () => HTMLTextAreaElement | null
prompt: Accessor<string>
setPrompt: (v: string) => void
mode: Accessor<PromptMode>
setMode: (m: PromptMode) => void
isPickerOpen: Accessor<boolean>
closePicker: () => void
ignoredAtPositions: Accessor<Set<number>>
setIgnoredAtPositions: (next: Set<number> | ((s: Set<number>) => Set<number>)) => void
getAttachments: Accessor<Attachment[]>
removeAttachment: (attachmentId: string) => void
submitOnEnter: Accessor<boolean>
onSend: () => void
selectPreviousHistory: (force?: boolean) => boolean
selectNextHistory: (force?: boolean) => boolean
}
export function usePromptKeyDown(options: UsePromptKeyDownOptions) {
const insertNewlineAtCursor = () => {
const textarea = options.getTextarea()
const current = options.prompt()
const start = textarea ? textarea.selectionStart : current.length
const end = textarea ? textarea.selectionEnd : current.length
const nextValue = current.substring(0, start) + "\n" + current.substring(end)
const nextCursor = start + 1
options.setPrompt(nextValue)
setTimeout(() => {
const nextTextarea = options.getTextarea()
if (!nextTextarea) return
nextTextarea.focus()
nextTextarea.setSelectionRange(nextCursor, nextCursor)
}, 0)
}
return function handleKeyDown(e: KeyboardEvent) {
const textarea = options.getTextarea()
if (!textarea) return
const currentText = options.prompt()
const cursorAtBufferStart = textarea.selectionStart === 0 && textarea.selectionEnd === 0
const isShellMode = options.mode() === "shell"
if (!isShellMode && e.key === "!" && cursorAtBufferStart && currentText.length === 0 && !textarea.disabled) {
e.preventDefault()
options.setMode("shell")
return
}
if (options.isPickerOpen() && e.key === "Escape") {
e.preventDefault()
e.stopPropagation()
options.closePicker()
return
}
if (isShellMode) {
if (e.key === "Escape") {
e.preventDefault()
e.stopPropagation()
options.setMode("normal")
return
}
if (e.key === "Backspace" && cursorAtBufferStart && currentText.length === 0) {
e.preventDefault()
options.setMode("normal")
return
}
}
if (e.key === "Backspace" || e.key === "Delete") {
const cursorPos = textarea.selectionStart
const text = currentText
const pastePlaceholderRegex = createPastedPlaceholderRegex()
let pasteMatch
while ((pasteMatch = pastePlaceholderRegex.exec(text)) !== null) {
const placeholderStart = pasteMatch.index
const placeholderEnd = pasteMatch.index + pasteMatch[0].length
const pasteNumber = pasteMatch[1]
const isDeletingFromEnd = e.key === "Backspace" && cursorPos === placeholderEnd
const isDeletingFromStart = e.key === "Delete" && cursorPos === placeholderStart
const isSelected =
textarea.selectionStart <= placeholderStart &&
textarea.selectionEnd >= placeholderEnd &&
textarea.selectionStart !== textarea.selectionEnd
if (isDeletingFromEnd || isDeletingFromStart || isSelected) {
e.preventDefault()
const currentAttachments = options.getAttachments()
const attachment = currentAttachments.find(
(a) => a.source.type === "text" && a.display.includes(`pasted #${pasteNumber}`),
)
if (attachment) {
options.removeAttachment(attachment.id)
}
const newText = text.substring(0, placeholderStart) + text.substring(placeholderEnd)
options.setPrompt(newText)
setTimeout(() => {
textarea.setSelectionRange(placeholderStart, placeholderStart)
}, 0)
return
}
}
const imagePlaceholderRegex = createImagePlaceholderRegex()
let imageMatch
while ((imageMatch = imagePlaceholderRegex.exec(text)) !== null) {
const placeholderStart = imageMatch.index
const placeholderEnd = imageMatch.index + imageMatch[0].length
const imageNumber = imageMatch[1]
const isDeletingFromEnd = e.key === "Backspace" && cursorPos === placeholderEnd
const isDeletingFromStart = e.key === "Delete" && cursorPos === placeholderStart
const isSelected =
textarea.selectionStart <= placeholderStart &&
textarea.selectionEnd >= placeholderEnd &&
textarea.selectionStart !== textarea.selectionEnd
if (isDeletingFromEnd || isDeletingFromStart || isSelected) {
e.preventDefault()
const currentAttachments = options.getAttachments()
const attachment = currentAttachments.find(
(a) => a.source.type === "file" && a.mediaType.startsWith("image/") && a.display.includes(`Image #${imageNumber}`),
)
if (attachment) {
options.removeAttachment(attachment.id)
}
const newText = text.substring(0, placeholderStart) + text.substring(placeholderEnd)
options.setPrompt(newText)
setTimeout(() => {
textarea.setSelectionRange(placeholderStart, placeholderStart)
}, 0)
return
}
}
const mentionRegex = createMentionRegex()
let mentionMatch
while ((mentionMatch = mentionRegex.exec(text)) !== null) {
const mentionStart = mentionMatch.index
const mentionEnd = mentionMatch.index + mentionMatch[0].length
const name = mentionMatch[1]
const isDeletingFromEnd = e.key === "Backspace" && cursorPos === mentionEnd
const isDeletingFromStart = e.key === "Delete" && cursorPos === mentionStart
const isSelected =
textarea.selectionStart <= mentionStart &&
textarea.selectionEnd >= mentionEnd &&
textarea.selectionStart !== textarea.selectionEnd
if (isDeletingFromEnd || isDeletingFromStart || isSelected) {
const currentAttachments = options.getAttachments()
const attachment = currentAttachments.find((a) => {
if (a.source.type === "agent") {
return a.filename === name
}
if (a.source.type === "file") {
// Match either by filename (basename) or by path (for full paths like @docs/file.txt)
return (
a.filename === name ||
a.source.path === name ||
a.source.path.endsWith("/" + name) ||
a.source.path === name.replace(/\/$/, "")
)
}
if (a.source.type === "text") {
// For text attachments (path-only mentions), match by value
return a.source.value === name || a.source.value.endsWith("/" + name)
}
return false
})
if (attachment) {
e.preventDefault()
options.removeAttachment(attachment.id)
options.setIgnoredAtPositions((prev) => {
const next = new Set(prev)
next.delete(mentionStart)
return next
})
const newText = text.substring(0, mentionStart) + text.substring(mentionEnd)
options.setPrompt(newText)
setTimeout(() => {
textarea.setSelectionRange(mentionStart, mentionStart)
}, 0)
// Check if there are any @ remaining in the text - if not, close the picker
if (!newText.includes("@") && options.isPickerOpen()) {
options.closePicker()
// Clear ignoredAtPositions since we deleted the entire @mention
// This ensures typing @ again will open the picker
options.setIgnoredAtPositions(new Set())
}
return
}
}
}
}
if (e.key === "Enter") {
const isModified = e.metaKey || e.ctrlKey
// If the picker is open, Enter should select from it.
if (!isModified && options.isPickerOpen()) {
return
}
if (options.submitOnEnter()) {
// Swapped mode: Enter submits, Cmd/Ctrl+Enter inserts a newline.
if (isModified) {
e.preventDefault()
e.stopPropagation()
insertNewlineAtCursor()
return
}
// Shift+Enter always inserts a newline.
if (e.shiftKey) {
// If the picker is open, avoid selecting an item on Enter.
if (options.isPickerOpen()) {
e.stopPropagation()
}
return
}
e.preventDefault()
options.onSend()
return
}
// Default: Cmd/Ctrl+Enter submits.
if (isModified) {
e.preventDefault()
if (options.isPickerOpen()) {
options.closePicker()
}
options.onSend()
return
}
}
if (e.key === "ArrowUp") {
const handled = options.selectPreviousHistory()
if (handled) {
e.preventDefault()
return
}
}
if (e.key === "ArrowDown") {
const handled = options.selectNextHistory()
if (handled) {
e.preventDefault()
return
}
}
}
}