Files
next-ai-draw-io/components/canvas/version-strip.tsx
T
dayuan.jiang 899b6a3b5b refactor(canvas): decouple the canvas from the chat engine
The canvas components will be reused by the MCP server's browser shell,
which has no chat and no Next.js. They now read everything they need
from small contexts and the canvas store instead of the chat engine:

- components/canvas/versions-context.tsx: VersionsProvider and
  useVersionsContext give the version cards, the strip and the compare
  dialog a VersionsSource (versions, onCanvasId, undoneId, isBusy,
  canUndo, canRedo, restore, undo, redo). The chat fills it from the
  versions store and the engine in components/chat/chat-versions.tsx.
- stores/canvas-store.ts: isBusy and busyReason; the chat engine sets
  them while a turn runs, SelectionAsk and the version UI read them.
- components/canvas/version-card.tsx: the visual version card and the
  thumbnail, out of tool-activity.tsx; the chat's card composes it and
  adds its "Show XML" link and code panel.
- compare-dialog.tsx and version-strip.tsx move to components/canvas;
  the strip takes the minimum number of versions to show as a prop, the
  chat panel computes it from the cards it has.
- components/canvas/locale-context.tsx: LocaleProvider and useLocale,
  fed by the [lang] layout; CanvasStage no longer uses next/navigation.
  The overlay (SelectionAsk) is a slot and the wait for the saved
  language is a prop, so the shell can leave both out.
- lib/version-text.ts: describeChanges is now describeChangeSummary, so
  it can be imported next to the MCP core's describeChanges.
2026-10-11 20:56:07 +09:00

78 lines
3.4 KiB
TypeScript

import { useEffect, useRef } from "react"
import { useVersionsContext } from "@/components/canvas/versions-context"
import { useDictionary } from "@/hooks/use-dictionary"
import { cn } from "@/lib/utils"
import { useUiStore } from "@/stores/ui-store"
/** Row of version thumbnails under the panel header; click to compare */
export function VersionStrip({
minVersions = 2,
}: {
/** Hidden below this many versions: one version alone adds nothing to
* its card, unless the caller knows there is no card for it */
minVersions?: number
}) {
const dict = useDictionary()
const { versions, onCanvasId } = useVersionsContext()
const openCompare = useUiStore((s) => s.openCompare)
const scrollRef = useRef<HTMLDivElement>(null)
// Keep the newest version in view
useEffect(() => {
const el = scrollRef.current
if (el) el.scrollTo({ left: el.scrollWidth, behavior: "smooth" })
}, [versions.length])
if (versions.length < minVersions) return null
return (
<div className="flex items-center gap-2 border-b border-border px-3.5 pt-1 pb-3">
<span className="shrink-0 text-xs text-muted-foreground">
{dict.versions.strip}
</span>
<div
ref={scrollRef}
className="flex min-w-0 flex-1 gap-1.5 overflow-x-auto p-1 scrollbar-thin"
>
{versions.map((version) => {
const isCurrent = version.id === onCanvasId
return (
<button
key={version.id}
type="button"
onClick={() => openCompare(version.id)}
title={`v${version.number}${isCurrent ? ` · ${dict.versions.currentCanvas}` : ""}`}
className={cn(
"sheet-light relative flex h-12 w-[72px] shrink-0 items-center justify-center overflow-hidden rounded-lg border border-border bg-white transition-colors hover:border-foreground/30",
// An outline with a gap reads on the white
// picture in both themes
isCurrent &&
"outline-2 outline-offset-2 outline-foreground",
)}
data-testid="version-thumb"
>
{version.svg && (
// biome-ignore lint/performance/noImgElement: data URL thumbnail
<img
src={version.svg}
alt=""
className="max-h-9 max-w-[62px] object-contain"
/>
)}
<span
className={cn(
"absolute bottom-0.5 left-1 text-[10px] font-medium tabular-nums text-neutral-500",
isCurrent &&
"font-semibold text-neutral-900",
)}
>
v{version.number}
</span>
</button>
)
})}
</div>
</div>
)
}