siftlode/frontend/src/components/UndoToolbar.tsx

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import { useEffect } from "react";
import { useTranslation } from "react-i18next";
import { Redo2, Undo2 } from "lucide-react";
// Reusable undo/redo buttons with Ctrl/Cmd+Z (undo) and Ctrl/Cmd+Y or Ctrl/Cmd+Shift+Z
// (redo) shortcuts. Pairs with useUndoable but takes plain props, so it works with any
// undo source. The shortcuts ignore keystrokes while a text field is focused.
export default function UndoToolbar({
canUndo,
canRedo,
onUndo,
onRedo,
}: {
canUndo: boolean;
canRedo: boolean;
onUndo: () => void;
onRedo: () => void;
}) {
const { t } = useTranslation();
useEffect(() => {
function onKey(e: KeyboardEvent) {
if (!(e.ctrlKey || e.metaKey)) return;
const tgt = e.target as HTMLElement | null;
if (
tgt &&
(tgt.tagName === "INPUT" ||
tgt.tagName === "TEXTAREA" ||
tgt.isContentEditable)
)
return;
const k = e.key.toLowerCase();
if (k === "z" && !e.shiftKey) {
if (canUndo) {
e.preventDefault();
onUndo();
}
} else if (k === "y" || (k === "z" && e.shiftKey)) {
if (canRedo) {
e.preventDefault();
onRedo();
}
}
}
window.addEventListener("keydown", onKey);
return () => window.removeEventListener("keydown", onKey);
}, [canUndo, canRedo, onUndo, onRedo]);
const btn =
"p-1.5 rounded-lg border border-border text-muted enabled:hover:text-fg enabled:hover:border-accent disabled:opacity-30 transition";
return (
<div className="inline-flex items-center gap-1">
<button onClick={onUndo} disabled={!canUndo} title={t("common.undo")} aria-label={t("common.undo")} className={btn}>
<Undo2 className="w-4 h-4" />
</button>
<button onClick={onRedo} disabled={!canRedo} title={t("common.redo")} aria-label={t("common.redo")} className={btn}>
<Redo2 className="w-4 h-4" />
</button>
</div>
);
}