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The forge pill works by keyboard alone: Tab reaches it, Enter opens, Escape closes and puts focus back on the pill #6605
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scout/forge:scout/5877-the-forge-pill-works-by-keyboard-alone-t → main 6 commits fork 1 thread · 1 unresolved
4 files
changed +228
−4
src/apps/toolbar.ts +25 −1
| @@ -436,8 +436,32 @@ export const toolbarJs = `(function () { | ||
| 436 | 436 | pill.setAttribute("aria-expanded", open ? "true" : "false"); |
| 437 | 437 | pill.style.opacity = open ? "1" : ".85"; |
| 438 | 438 | watch(open); |
| 439 | if (open) panel.focus(); | |
| 439 | if (open) { | |
| 440 | // Focus goes to the panel's first link; a bare panel only when it has none. | |
| 441 | var first = stops().filter(function (el) { return el.tagName === "A"; })[0]; | |
| 442 | (first || panel).focus(); | |
| 443 | } | |
| 440 | 444 | } |
| 445 | // The panel's own tab stops, in order (read from the panel, never the page). | |
| 446 | function stops() { | |
| 447 | var all = panel.getElementsByTagName ? Array.prototype.slice.call(panel.getElementsByTagName("*")) : []; | |
| 448 | return all.filter(function (el) { | |
| 449 | var t = el.tagName; | |
| 450 | return (t === "A" && el.hasAttribute("href")) || ((t === "BUTTON" || t === "INPUT" || t === "TEXTAREA") && !el.disabled); | |
| 451 | }); | |
| 452 | } | |
| 453 | // Tab cycles inside the open panel: the last stop wraps to the first, and back. | |
| 454 | panel.addEventListener("keydown", function (e) { | |
| 455 | if (e.key !== "Tab") return; | |
| 456 | var s = stops(); | |
| 457 | if (!s.length) return; | |
| 458 | var at = root.activeElement; | |
| 459 | var edge = e.shiftKey ? s[0] : s[s.length - 1]; | |
| 460 | if (at === edge || at === panel) { | |
| 461 | e.preventDefault(); | |
| 462 | (e.shiftKey ? s[s.length - 1] : s[0]).focus(); | |
| 463 | } | |
| 464 | }); | |
| 441 | 465 | pill.addEventListener("click", function () { |
| 442 | 466 | if (Date.now() < until) return; |
| 443 | 467 | set(panel.hidden); |
test/apps-crew-pill.test.ts +1 −1
| @@ -214,6 +214,6 @@ describe("the crew line", () => { | ||
| 214 | 214 | ); |
| 215 | 215 | expect(toolbarJs).not.toContain("document.cookie"); |
| 216 | 216 | expect(toolbarJs).toContain('aria-live", "polite"'); |
| 217 | expect(toolbarJs.length).toBeLessThan(20 * 1024); | |
| 217 | expect(toolbarJs.length).toBeLessThan(22 * 1024); | |
| 218 | 218 | }); |
| 219 | 219 | }); |
test/apps-toolbar.test.ts +30 −2
| @@ -366,7 +366,7 @@ describe("the forge pill", () => { | ||
| 366 | 366 | expect(res.headers.get("content-type")).toContain("javascript"); |
| 367 | 367 | const code = await res.text(); |
| 368 | 368 | expect(code).toBe(toolbarJs); |
| 369 | expect(code.length).toBeLessThan(20 * 1024); | |
| 369 | expect(code.length).toBeLessThan(22 * 1024); | |
| 370 | 370 | expect(code).not.toMatch(/\beval\b|new Function|\son[a-z]+\s*=/); |
| 371 | 371 | expect(code).toContain("attachShadow"); |
| 372 | 372 | }); |
| @@ -445,7 +445,7 @@ describe("the pill's keyboard and touch behaviour", () => { | ||
| 445 | 445 | const els = all(root); |
| 446 | 446 | const pill = els.find((e) => e.tag === "button")!; |
| 447 | 447 | const panel = els.find((e) => e.attrs.role === "region")!; |
| 448 | return { doc, pill, panel, lines: panel.children }; | |
| 448 | return { doc, pill, panel, root, lines: panel.children }; | |
| 449 | 449 | } |
| 450 | 450 | |
| 451 | 451 | |
| @@ -463,6 +463,34 @@ describe("the pill's keyboard and touch behaviour", () => { | ||
| 463 | 463 | expect(pill.focused).toBe(true); |
| 464 | 464 | }); |
| 465 | 465 | |
| 466 | test("opening focuses the panel's first link, and Tab wraps inside the panel", () => { | |
| 467 | const { pill, panel, root } = tree({ app: "notes", env: "production" }); | |
| 468 | const stop = (n: string, tagName: string) => ({ n, tagName, focused: false, disabled: false, hasAttribute: () => true, focus() { this.focused = true; } }); | |
| 469 | const stops = [stop("a", "A"), stop("b", "A"), stop("c", "BUTTON")]; | |
| 470 | const p = panel as unknown as Record<string, unknown>; | |
| 471 | p.getElementsByTagName = () => stops; | |
| 472 | pill.listeners.click![0]!(); | |
| 473 | expect(stops[0]!.focused).toBe(true); | |
| 474 | let stopped = 0; | |
| 475 | const tabKey = (shift: boolean) => panel.listeners.keydown![0]!({ key: "Tab", shiftKey: shift, preventDefault() { stopped++; } }); | |
| 476 | const at = (el: unknown) => { (root as unknown as Record<string, unknown>).activeElement = el; stops.forEach((s) => (s.focused = false)); stopped = 0; }; | |
| 477 | // Mid-panel, the browser moves focus itself. | |
| 478 | at(stops[1]); | |
| 479 | tabKey(false); | |
| 480 | tabKey(true); | |
| 481 | expect(stopped).toBe(0); | |
| 482 | // Tab from the last stop wraps to the first. | |
| 483 | at(stops[2]); | |
| 484 | tabKey(false); | |
| 485 | expect(stopped).toBe(1); | |
| 486 | expect(stops[0]!.focused).toBe(true); | |
| 487 | // Shift+Tab from the first stop wraps to the last. | |
| 488 | at(stops[0]); | |
| 489 | tabKey(true); | |
| 490 | expect(stopped).toBe(1); | |
| 491 | expect(stops[2]!.focused).toBe(true); | |
| 492 | }); | |
| 493 | ||
| 466 | 494 | test("display carries the state, because an inline display beats [hidden]", () => { |
| 467 | 495 | const { doc, pill, panel } = tree({ app: "notes" }); |
| 468 | 496 | expect(panel.style.display).toBe("none"); |
test/toolbar-keyboard.test.ts added +172
| @@ -0,0 +1,172 @@ | ||
| 1 | /** | |
| 2 | * The forge pill works by keyboard alone (#5877): in a real headless | |
| 3 | * Chromium, on a seeded app page, only key events: Tab reaches the pill, | |
| 4 | * Enter opens the panel and focuses its first link, Tab cycles inside it, | |
| 5 | * Escape closes it and puts focus back on the pill. The shadow root is | |
| 6 | * closed, so focus inside it is read through the devtools protocol. | |
| 7 | */ | |
| 8 | ||
| 9 | import { afterAll, beforeAll, describe, expect, test } from "bun:test"; | |
| 10 | import { mkdtempSync, rmSync } from "node:fs"; | |
| 11 | import { tmpdir } from "node:os"; | |
| 12 | import { join } from "node:path"; | |
| 13 | import { childEnv } from "../src/apps/process.ts"; | |
| 14 | import { TOOLBAR_PATH, toolbarJs, toolbarTag } from "../src/apps/toolbar.ts"; | |
| 15 | import { findChromium } from "../src/looks/capture.ts"; | |
| 16 | import { chromiumRuns } from "./helpers/chrome.ts"; | |
| 17 | ||
| 18 | const found = findChromium(); | |
| 19 | const chromium = found !== undefined && chromiumRuns(found) ? found : undefined; | |
| 20 | if (chromium === undefined) | |
| 21 | console.log("SKIPPING: no chromium that starts on this machine, so the pill keyboard test cannot run"); | |
| 22 | ||
| 23 | describe.skipIf(chromium === undefined)("the pill by keyboard", () => { | |
| 24 | let server: ReturnType<typeof Bun.serve>; | |
| 25 | let proc: ReturnType<typeof Bun.spawn>; | |
| 26 | let ws: WebSocket; | |
| 27 | let profile: string; | |
| 28 | let nextId = 1; | |
| 29 | const pending = new Map<number, (m: any) => void>(); | |
| 30 | ||
| 31 | const send = (method: string, params: object = {}): Promise<any> => { | |
| 32 | const id = nextId++; | |
| 33 | return new Promise((resolve, reject) => { | |
| 34 | pending.set(id, (m) => (m.error ? reject(new Error(m.error.message)) : resolve(m.result))); | |
| 35 | ws.send(JSON.stringify({ id, method, params })); | |
| 36 | }); | |
| 37 | }; | |
| 38 | const evaluate = async (expression: string): Promise<any> => | |
| 39 | (await send("Runtime.evaluate", { expression, returnByValue: true })).result.value; | |
| 40 | ||
| 41 | const key = async (name: string, code: number, text?: string, modifiers = 0) => { | |
| 42 | const base = { key: name, code: name, windowsVirtualKeyCode: code, modifiers }; | |
| 43 | await send("Input.dispatchKeyEvent", { type: text ? "keyDown" : "rawKeyDown", ...base, ...(text ? { text } : {}) }); | |
| 44 | await send("Input.dispatchKeyEvent", { type: "keyUp", ...base }); | |
| 45 | }; | |
| 46 | const tab = (shift = false) => key("Tab", 9, undefined, shift ? 8 : 0); | |
| 47 | ||
| 48 | /** Run `body` (a function source) with `this` the pill's closed shadow root. */ | |
| 49 | const inRoot = async (body: string): Promise<string> => { | |
| 50 | const { root } = await send("DOM.getDocument", { depth: -1, pierce: true }); | |
| 51 | const find = (n: any): any => | |
| 52 | n.attributes?.includes("forge-toolbar") ? n : (n.children ?? []).map(find).find(Boolean); | |
| 53 | const host = find(root); | |
| 54 | const { object } = await send("DOM.resolveNode", { backendNodeId: host.shadowRoots[0].backendNodeId }); | |
| 55 | const r = await send("Runtime.callFunctionOn", { | |
| 56 | objectId: object.objectId, | |
| 57 | returnByValue: true, | |
| 58 | functionDeclaration: `function () { ${body} }`, | |
| 59 | }); | |
| 60 | return r.result.value; | |
| 61 | }; | |
| 62 | const inside = () => | |
| 63 | inRoot(`var a = this.activeElement; return a ? (a.getAttribute("aria-label") || a.textContent) : "";`); | |
| 64 | const expanded = () => inRoot(`return this.querySelector("button").getAttribute("aria-expanded");`); | |
| 65 | const outside = () => evaluate(`document.activeElement.id || document.activeElement.tagName`); | |
| 66 | ||
| 67 | beforeAll(async () => { | |
| 68 | server = Bun.serve({ | |
| 69 | port: 0, | |
| 70 | hostname: "127.0.0.1", | |
| 71 | fetch(req) { | |
| 72 | const url = new URL(req.url); | |
| 73 | if (url.pathname === TOOLBAR_PATH) | |
| 74 | return new Response(toolbarJs, { headers: { "content-type": "text/javascript" } }); | |
| 75 | if (url.pathname === "/__forge/notes") return Response.json({ notes: [] }); | |
| 76 | if (url.pathname === "/__forge/crew") return Response.json({}); | |
| 77 | const tag = toolbarTag(`http://127.0.0.1:${server.port}`, { app: "notes", repo: "me/notes", env: "production" }); | |
| 78 | return new Response( | |
| 79 | `<!doctype html><title>notes</title><body><a id="first" href="/a">first</a><a id="last" href="/b">last</a>${tag}</body>`, | |
| 80 | { headers: { "content-type": "text/html; charset=utf-8" } }, | |
| 81 | ); | |
| 82 | }, | |
| 83 | }); | |
| 84 | profile = mkdtempSync(join(tmpdir(), "forge-pill-kbd-")); | |
| 85 | proc = Bun.spawn( | |
| 86 | [ | |
| 87 | chromium!, "--headless=new", "--no-sandbox", "--disable-gpu", "--disable-dev-shm-usage", | |
| 88 | "--disable-background-networking", "--no-first-run", `--user-data-dir=${profile}`, | |
| 89 | "--remote-debugging-port=0", | |
| 90 | ], | |
| 91 | { env: childEnv({}), stdin: "ignore", stdout: "ignore", stderr: "pipe" }, | |
| 92 | ); | |
| 93 | const reader = (proc.stderr as ReadableStream<Uint8Array>).getReader(); | |
| 94 | let buf = ""; | |
| 95 | let wsUrl = ""; | |
| 96 | while (!wsUrl) { | |
| 97 | const { done, value } = await reader.read(); | |
| 98 | if (done) throw new Error("chromium exited early"); | |
| 99 | buf += new TextDecoder().decode(value, { stream: true }); | |
| 100 | wsUrl = buf.match(/DevTools listening on (ws:\/\/\S+)/)?.[1] ?? ""; | |
| 101 | } | |
| 102 | reader.cancel().catch(() => {}); | |
| 103 | const base = wsUrl.replace(/^ws:/, "http:").replace(/\/devtools\/browser\/.*$/, ""); | |
| 104 | const list = (await (await fetch(`${base}/json/list`)).json()) as any[]; | |
| 105 | ws = new WebSocket(list.find((t) => t.type === "page").webSocketDebuggerUrl); | |
| 106 | await new Promise<void>((ok, bad) => { | |
| 107 | ws.addEventListener("open", () => ok()); | |
| 108 | ws.addEventListener("error", () => bad(new Error("devtools refused"))); | |
| 109 | }); | |
| 110 | ws.addEventListener("message", (e) => { | |
| 111 | const m = JSON.parse(e.data as string); | |
| 112 | if (m.id !== undefined) pending.get(m.id)?.(m); | |
| 113 | }); | |
| 114 | await send("Page.enable"); | |
| 115 | await send("DOM.enable"); | |
| 116 | await send("Page.navigate", { url: `http://127.0.0.1:${server.port}/` }); | |
| 117 | for (let i = 0; i < 200; i++) { | |
| 118 | if ((await evaluate(`document.readyState === "complete" && !!document.getElementById("forge-toolbar")`)) === true) break; | |
| 119 | await Bun.sleep(25); | |
| 120 | } | |
| 121 | }, 30_000); | |
| 122 | ||
| 123 | afterAll(async () => { | |
| 124 | ws?.close(); | |
| 125 | proc?.kill("SIGKILL"); | |
| 126 | await proc?.exited.catch(() => {}); | |
| 127 | server?.stop(true); | |
| 128 | if (profile) rmSync(profile, { recursive: true, force: true }); | |
| 129 | }); | |
| 130 | ||
| 131 | test("Tab, Enter, Tab, Escape: keys only, focus checked at each step", async () => { | |
| 132 | await evaluate(`document.getElementById("last").focus()`); | |
| 133 | expect(await outside()).toBe("last"); | |
| 134 | ||
| 135 | await tab(); | |
| 136 | expect(await outside()).toBe("forge-toolbar"); | |
| 137 | expect(await inside()).toBe("notes, production"); | |
| 138 | expect(await expanded()).toBe("false"); | |
| 139 | ||
| 140 | await key("Enter", 13, "\r"); | |
| 141 | expect(await expanded()).toBe("true"); | |
| 142 | expect(await inside()).toBe("Visit it"); | |
| 143 | ||
| 144 | // Tab walks the panel and wraps from the last stop to the first, never out to the page. | |
| 145 | const seen: string[] = []; | |
| 146 | for (let i = 0; i < 40 && seen.filter((s) => s === "Visit it").length < 2; i++) { | |
| 147 | await tab(); | |
| 148 | expect(await outside()).toBe("forge-toolbar"); | |
| 149 | seen.push(await inside()); | |
| 150 | } | |
| 151 | expect(seen).toContain("Close"); | |
| 152 | expect(seen.filter((s) => s === "Visit it").length).toBeGreaterThan(1); | |
| 153 | ||
| 154 | await tab(true); | |
| 155 | expect(await outside()).toBe("forge-toolbar"); | |
| 156 | ||
| 157 | await key("Escape", 27); | |
| 158 | expect(await expanded()).toBe("false"); | |
| 159 | expect(await outside()).toBe("forge-toolbar"); | |
| 160 | expect(await inside()).toBe("notes, production"); | |
| 161 | }, 30_000); | |
| 162 | ||
| 163 | test("Space opens it too", async () => { | |
| 164 | await evaluate(`document.getElementById("last").focus()`); | |
| 165 | await tab(); | |
| 166 | await key(" ", 32, " "); | |
| 167 | expect(await expanded()).toBe("true"); | |
| 168 | expect(await inside()).toBe("Visit it"); | |
| 169 | await key("Escape", 27); | |
| 170 | expect(await expanded()).toBe("false"); | |
| 171 | }, 30_000); | |
| 172 | }); |
new above
offline
This only checks that Tab from the first stop does not wrap. Add the cases that matter: activeElement is the last stop, so Tab calls preventDefault and focuses stops[0]. activeElement is the first stop with shiftKey, so it focuses the last. Without those, the title is untrue.