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maestro/web/src/contextMenu.ts
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Miguel PalhasandClaude Opus 5 43b90ccf0a
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feat(maestro): rename a session from the web sidebar
Right-clicking a card opens a custom context menu (rename, spawn similar,
kill). Rename swaps the name for an inline field; Enter commits, Escape and
blur cancel. The tree stops rebuilding while the field is open, so a catalog
delta cannot replace what is being typed into.

Refs #125

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 11:32:20 +01:00

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2.8 KiB
TypeScript

/** Custom right-click menu (#125).
*
* One menu exists at a time: opening a second closes the first. The menu is
* appended to `<body>` rather than to the row it belongs to, so an overflowing
* sidebar cannot clip it.
*/
export interface ContextMenuItem {
label: string;
onSelect: () => void;
/** Renders the entry in the destructive style. */
danger?: boolean;
}
let open: { el: HTMLElement; dispose: () => void } | null = null;
/** Close the menu that is currently up, if any. */
export function closeContextMenu(): void {
open?.dispose();
}
/**
* Open a menu at viewport coordinates `x`/`y`. The menu closes on selection,
* on Escape, on a pointer press anywhere outside it, and on scroll or resize —
* a menu anchored to coordinates goes stale the moment the page moves under it.
*/
export function openContextMenu(x: number, y: number, items: ContextMenuItem[]): HTMLElement {
closeContextMenu();
const el = document.createElement("div");
el.className = "context-menu";
el.setAttribute("role", "menu");
for (const item of items) {
const btn = document.createElement("button");
btn.type = "button";
btn.className = item.danger ? "context-menu-item is-danger" : "context-menu-item";
btn.setAttribute("role", "menuitem");
btn.textContent = item.label;
btn.addEventListener("click", (ev) => {
ev.preventDefault();
ev.stopPropagation();
closeContextMenu();
item.onSelect();
});
el.appendChild(btn);
}
document.body.appendChild(el);
// Nudge back inside the viewport when the click was near an edge. happy-dom
// reports 0 for every measurement, which lands the menu at the click point —
// the same place it would sit with room to spare.
const rect = el.getBoundingClientRect();
const maxX = window.innerWidth - rect.width;
const maxY = window.innerHeight - rect.height;
el.style.left = `${Math.max(0, Math.min(x, maxX))}px`;
el.style.top = `${Math.max(0, Math.min(y, maxY))}px`;
const onPointerDown = (ev: Event) => {
if (!el.contains(ev.target as Node)) closeContextMenu();
};
const onKeyDown = (ev: KeyboardEvent) => {
if (ev.key === "Escape") closeContextMenu();
};
const dispose = () => {
if (open?.el !== el) return;
open = null;
el.remove();
window.removeEventListener("pointerdown", onPointerDown, true);
window.removeEventListener("keydown", onKeyDown, true);
window.removeEventListener("scroll", closeContextMenu, true);
window.removeEventListener("resize", closeContextMenu);
};
window.addEventListener("pointerdown", onPointerDown, true);
window.addEventListener("keydown", onKeyDown, true);
window.addEventListener("scroll", closeContextMenu, true);
window.addEventListener("resize", closeContextMenu);
open = { el, dispose };
(el.firstElementChild as HTMLElement | null)?.focus();
return el;
}