feat: cancel button, question prompt mic, solid timer (#10)

## Changes

### Cancel button (✕)
- New cancel button appears during recording next to stop button
- Tapping ✕ stops recording and **discards audio** — no text inserted
- Tapping ⏹ stops recording and **inserts text** (as before)

### Question prompt support
- Mic button injected into `[data-slot=question-custom-input]` (custom
answer textarea)
- Text insertion via `selectionStart`/`selectionEnd` (textarea ≠
contenteditable)
- MutationObserver detects when question prompt appears

### Solid timer
- Timer background: `#e53935` (opaque red) with white text
- Was `rgba(229, 57, 53, 0.1)` (semi-transparent — text showed through)
- Now fully visible over any text

### Technical
- Refactored UI to use CSS classes instead of single IDs (supports
multiple buttons)
- `insertText()` now takes `target: "composer" | "question"`
- 47 tests, 100% line coverage

Co-authored-by: opencode-agent <agent@slaid098.dev>

src/index.ts

@@ -1,4 +1,4 @@
-import { type AudioRecorder, createAudioRecorder, formatTime } from "./audio.js";
+import { type AudioRecorder, createAudioRecorder } from "./audio.js";
 import {
   getConfig,
   isFirstRun,
@@ -6,7 +6,7 @@ import {
   setConfig,
   validateApiKey,
 } from "./config.js";
-import { insertText, isOpencodePage, submitPrompt } from "./insert.js";
+import { type InsertTarget, insertText, isOpencodePage, submitPrompt } from "./insert.js";
 import { setupKeyboardShortcut } from "./keyboard.js";
 import { transcribe } from "./transcribe.js";
 import type { DictationState } from "./types.js";
@@ -17,10 +17,7 @@ let currentState: DictationState = "idle";
 let timerInterval: ReturnType<typeof setInterval> | null = null;
 let elapsedSeconds = 0;
 let ui: ReturnType<typeof setupUI> | null = null;
-
+let currentTarget: InsertTarget = "composer";
-function getState(): DictationState {
-  return currentState;
-}
 
 function startTimer(): void {
   elapsedSeconds = 0;
@@ -37,7 +34,8 @@ function stopTimer(): void {
   }
 }
 
-async function toggleDictation(): Promise<void> {
+async function toggleDictation(target: InsertTarget): Promise<void> {
+  currentTarget = target;
   if (currentState === "idle") {
     await startRecording();
   } else if (currentState === "recording") {
@@ -75,10 +73,10 @@ async function stopAndTranscribe(): Promise<void> {
     const result = await transcribe(audioBlob, config);
 
     if (result.text) {
-      const inserted = insertText(result.text);
+      const inserted = insertText(result.text, currentTarget);
       if (!inserted) {
         ui?.toast("Could not find input field", true);
-      } else if (config.autoSubmit) {
+      } else if (config.autoSubmit && currentTarget === "composer") {
         submitPrompt();
       }
     }
@@ -93,6 +91,26 @@ async function stopAndTranscribe(): Promise<void> {
   }
 }
 
+async function cancelRecording(): Promise<void> {
+  if (currentState !== "recording" || !recorder) {
+    return;
+  }
+
+  stopTimer();
+
+  try {
+    await recorder.stop();
+  } catch {
+    // discard audio
+  }
+
+  currentState = "idle";
+  elapsedSeconds = 0;
+  recorder = null;
+  ui?.updateState(currentState);
+  ui?.toast("Recording cancelled");
+}
+
 function promptForApiKey(): void {
   const key = prompt("Enter your Groq API key (get one free at console.groq.com/keys):", "");
   if (key && validateApiKey(key)) {
@@ -155,10 +173,17 @@ function init(): void {
     return;
   }
 
-  ui = setupUI(toggleDictation, getState);
+  ui = setupUI({
+    onToggle: (target: InsertTarget) => {
+      void toggleDictation(target);
+    },
+    onCancel: () => {
+      void cancelRecording();
+    },
+  });
 
   setupKeyboardShortcut(() => {
-    void toggleDictation();
+    void toggleDictation("composer");
   });
 
   registerMenuCommands({

src/insert.ts

@@ -1,11 +1,21 @@
 const PROMPT_INPUT_SELECTOR = '[data-component="prompt-input"]';
 const SUBMIT_SELECTOR = '[data-action="prompt-submit"]';
+const QUESTION_INPUT_SELECTOR = '[data-slot="question-custom-input"]';
+
+export type InsertTarget = "composer" | "question";
 
 export function isOpencodePage(): boolean {
   return document.querySelector(PROMPT_INPUT_SELECTOR) !== null;
 }
 
-export function insertText(text: string): boolean {
+export function insertText(text: string, target: InsertTarget = "composer"): boolean {
+  if (target === "question") {
+    return insertIntoTextarea(text);
+  }
+  return insertIntoContenteditable(text);
+}
+
+function insertIntoContenteditable(text: string): boolean {
   const input = document.querySelector<HTMLElement>(PROMPT_INPUT_SELECTOR);
   if (!input) {
     return false;
@@ -26,6 +36,24 @@ export function insertText(text: string): boolean {
   return true;
 }
 
+function insertIntoTextarea(text: string): boolean {
+  const textarea = document.querySelector<HTMLTextAreaElement>(QUESTION_INPUT_SELECTOR);
+  if (!textarea) {
+    return false;
+  }
+
+  const start = textarea.selectionStart;
+  const end = textarea.selectionEnd;
+  const newValue = textarea.value.substring(0, start) + text + textarea.value.substring(end);
+
+  textarea.value = newValue;
+  textarea.selectionStart = textarea.selectionEnd = start + text.length;
+  textarea.dispatchEvent(new Event("input", { bubbles: true }));
+  textarea.focus();
+
+  return true;
+}
+
 export function submitPrompt(): boolean {
   const submitButton = document.querySelector<HTMLElement>(SUBMIT_SELECTOR);
   if (!submitButton) {

src/ui.ts

@@ -1,20 +1,24 @@
+import type { InsertTarget } from "./insert.js";
 import type { DictationState } from "./types.js";
 
-const BUTTON_ID = "opencode-voice-dictation-btn";
+const BUTTON_CLASS = "ocvd-btn";
-const CONTAINER_ID = "opencode-voice-dictation-container";
+const CONTAINER_CLASS = "ocvd-container";
-const TIMER_ID = "opencode-voice-dictation-timer";
+const TIMER_CLASS = "ocvd-timer";
+const CANCEL_CLASS = "ocvd-cancel";
 const COMPOSER_SELECTORS = [
   '[data-component="session-composer"]',
   '[data-component="session-new-composer"]',
 ];
+const QUESTION_INPUT_SELECTOR = '[data-slot="question-custom-input"]';
 
 const ICON_MIC = `<svg viewBox="0 0 24 24" width="18" height="18" fill="currentColor"><path d="M12 14c1.66 0 3-1.34 3-3V5c0-1.66-1.34-3-3-3S9 3.34 9 5v6c0 1.66 1.34 3 3 3z"/><path d="M17 11c0 2.76-2.24 5-5 5s-5-2.24-5-5H5c0 3.53 2.61 6.43 6 6.92V21h2v-3.08c3.39-.49 6-3.39 6-6.92h-2z"/></svg>`;
 const ICON_STOP = `<svg viewBox="0 0 24 24" width="18" height="18" fill="currentColor"><rect x="6" y="6" width="12" height="12" rx="3"/></svg>`;
+const ICON_CANCEL = `<svg viewBox="0 0 24 24" width="14" height="14" fill="currentColor"><path d="M18.3 5.71L12 12l6.3 6.29-1.42 1.42L10.58 13.4 4.29 19.71 2.87 18.3 9.16 12 2.87 5.71 4.29 4.29 10.58 10.58l6.29-6.29z"/></svg>`;
 const ICON_SPINNER = `<svg class="ocvd-spin" viewBox="0 0 24 24" width="18" height="18" fill="currentColor"><path d="M12 4V1L8 5l4 4V6c3.31 0 6 2.69 6 6 0 1.01-.25 1.97-.7 2.8l1.46 1.46C19.54 15.03 20 13.57 20 12c0-4.42-3.58-8-8-8z"/></svg>`;
 
 function createButtonStyle(): string {
   return `
-    #${CONTAINER_ID} {
+    .${CONTAINER_CLASS} {
       position: absolute !important;
       top: 8px;
       right: 8px;
@@ -24,10 +28,10 @@ function createButtonStyle(): string {
       gap: 6px;
       pointer-events: none;
     }
-    #${CONTAINER_ID} > * {
+    .${CONTAINER_CLASS} > * {
       pointer-events: auto;
     }
-    #${BUTTON_ID} {
+    .${BUTTON_CLASS} {
       display: flex;
       align-items: center;
       justify-content: center;
@@ -42,43 +46,65 @@ function createButtonStyle(): string {
       padding: 0;
       flex-shrink: 0;
     }
-    #${BUTTON_ID}:hover {
+    .${BUTTON_CLASS}:hover {
       background: var(--color-bg-hover, rgba(128, 128, 128, 0.25));
       color: var(--color-text-primary, #fff);
     }
-    #${BUTTON_ID}.recording {
+    .${BUTTON_CLASS}.recording {
       background: #e53935;
       color: #fff;
       animation: ocvd-pulse 1.5s ease-in-out infinite;
     }
-    #${BUTTON_ID}.processing {
+    .${BUTTON_CLASS}.processing {
       background: var(--color-accent, #4a9eff);
       color: #fff;
       pointer-events: none;
       opacity: 0.8;
     }
-    #${TIMER_ID} {
+    .${CANCEL_CLASS} {
+      display: none;
+      align-items: center;
+      justify-content: center;
+      width: 28px;
+      height: 28px;
+      border-radius: 50%;
+      border: none;
+      background: rgba(128, 128, 128, 0.2);
+      color: var(--color-text-secondary, #aaa);
+      cursor: pointer;
+      transition: all 0.2s ease;
+      padding: 0;
+      flex-shrink: 0;
+    }
+    .${CANCEL_CLASS}:hover {
+      background: rgba(128, 128, 128, 0.4);
+      color: #fff;
+    }
+    .${CANCEL_CLASS}.visible {
+      display: flex;
+    }
+    .${TIMER_CLASS} {
       display: none;
       font-family: monospace;
       font-size: 13px;
       font-weight: 600;
-      color: #e53935;
+      color: #fff;
-      background: rgba(229, 57, 53, 0.1);
+      background: #e53935;
-      padding: 3px 10px;
+      padding: 4px 10px;
       border-radius: 12px;
       align-items: center;
       gap: 5px;
       line-height: 1;
       white-space: nowrap;
     }
-    #${TIMER_ID}.visible {
+    .${TIMER_CLASS}.visible {
       display: inline-flex;
     }
-    #${TIMER_ID}::before {
+    .${TIMER_CLASS}::before {
       content: "";
       width: 7px;
       height: 7px;
-      background: #e53935;
+      background: #fff;
       border-radius: 50%;
       animation: ocvd-blink 1s ease-in-out infinite;
       flex-shrink: 0;
@@ -150,34 +176,52 @@ function showToast(message: string, isError = false): void {
   }, 4000);
 }
 
+function formatTimer(seconds: number): string {
+  const mins = Math.floor(seconds / 60);
+  const secs = seconds % 60;
+  return `${String(mins).padStart(2, "0")}:${String(secs).padStart(2, "0")}`;
+}
+
 function createContainer(): HTMLDivElement {
   const container = document.createElement("div");
-  container.id = CONTAINER_ID;
+  container.className = CONTAINER_CLASS;
+
+  const cancel = document.createElement("button");
+  cancel.className = CANCEL_CLASS;
+  cancel.type = "button";
+  cancel.title = "Cancel recording";
+  cancel.innerHTML = ICON_CANCEL;
 
   const timer = document.createElement("span");
-  timer.id = TIMER_ID;
+  timer.className = TIMER_CLASS;
   timer.textContent = "00:00";
 
   const button = document.createElement("button");
-  button.id = BUTTON_ID;
+  button.className = BUTTON_CLASS;
   button.type = "button";
   button.title = "Voice Dictation (Ctrl+Space)";
   button.innerHTML = ICON_MIC;
 
+  container.appendChild(cancel);
   container.appendChild(timer);
   container.appendChild(button);
 
   return container;
 }
 
-function updateButtonState(
+function updateAllButtonStates(state: DictationState, elapsedSeconds = 0): void {
-  button: HTMLButtonElement,
+  const containers = document.querySelectorAll<HTMLElement>(`.${CONTAINER_CLASS}`);
-  timer: HTMLElement,
+
-  state: DictationState,
+  for (const container of containers) {
-  elapsedSeconds = 0,
+    const button = container.querySelector<HTMLElement>(`.${BUTTON_CLASS}`);
-): void {
+    const timer = container.querySelector<HTMLElement>(`.${TIMER_CLASS}`);
+    const cancel = container.querySelector<HTMLElement>(`.${CANCEL_CLASS}`);
+
+    if (!button || !timer || !cancel) continue;
+
     button.classList.remove("recording", "processing");
     timer.classList.remove("visible");
+    cancel.classList.remove("visible");
 
     switch (state) {
       case "idle":
@@ -190,6 +234,7 @@ function updateButtonState(
         button.title = "Stop recording";
         timer.textContent = formatTimer(elapsedSeconds);
         timer.classList.add("visible");
+        cancel.classList.add("visible");
         break;
       case "processing":
         button.classList.add("processing");
@@ -198,11 +243,6 @@ function updateButtonState(
         break;
     }
   }
-
-function formatTimer(seconds: number): string {
-  const mins = Math.floor(seconds / 60);
-  const secs = seconds % 60;
-  return `${String(mins).padStart(2, "0")}:${String(secs).padStart(2, "0")}`;
 }
 
 function findComposer(): HTMLElement | null {
@@ -215,48 +255,77 @@ function findComposer(): HTMLElement | null {
   return null;
 }
 
-function isContainerInjected(): boolean {
+function ensureRelative(el: HTMLElement): void {
-  return document.getElementById(CONTAINER_ID) !== null;
+  if (window.getComputedStyle(el).position === "static") {
+    el.style.position = "relative";
+  }
 }
 
-function injectButton(onToggle: () => void): void {
+function injectIntoElement(
-  if (isContainerInjected()) {
+  parent: HTMLElement,
-    return;
+  onToggle: (target: InsertTarget) => void,
-  }
+  onCancel: () => void,
-
+  target: InsertTarget,
-  const composer = findComposer();
+): HTMLElement | null {
-  if (!composer) {
+  const existing = parent.querySelector(`.${CONTAINER_CLASS}`);
-    return;
+  if (existing) {
+    return null;
   }
 
   injectStyles();
-
+  ensureRelative(parent);
-  const computedPosition = window.getComputedStyle(composer).position;
-  if (computedPosition === "static") {
-    composer.style.position = "relative";
-  }
 
   const container = createContainer();
-  const button = container.querySelector(`#${BUTTON_ID}`) as HTMLButtonElement;
+
+  const button = container.querySelector(`.${BUTTON_CLASS}`) as HTMLButtonElement;
   button.addEventListener("click", (e) => {
     e.preventDefault();
     e.stopPropagation();
-    onToggle();
+    onToggle(target);
   });
 
-  composer.appendChild(container);
+  const cancel = container.querySelector(`.${CANCEL_CLASS}`) as HTMLButtonElement;
+  cancel.addEventListener("click", (e) => {
+    e.preventDefault();
+    e.stopPropagation();
+    onCancel();
+  });
+
+  parent.appendChild(container);
+  return container;
 }
 
-export function setupUI(
+function injectIntoComposer(onToggle: (target: InsertTarget) => void, onCancel: () => void): void {
-  onToggle: () => void,
+  const composer = findComposer();
-  _getState: () => DictationState,
+  if (composer) {
-): {
+    injectIntoElement(composer, onToggle, onCancel, "composer");
+  }
+}
+
+function injectIntoQuestionPrompts(
+  onToggle: (target: InsertTarget) => void,
+  onCancel: () => void,
+): void {
+  const textareas = document.querySelectorAll<HTMLTextAreaElement>(QUESTION_INPUT_SELECTOR);
+  for (const textarea of textareas) {
+    const parent = textarea.parentElement;
+    if (parent) {
+      injectIntoElement(parent, onToggle, onCancel, "question");
+    }
+  }
+}
+
+export function setupUI(callbacks: {
+  onToggle: (target: InsertTarget) => void;
+  onCancel: () => void;
+}): {
   inject: () => void;
   updateState: (state: DictationState, elapsedSeconds?: number) => void;
   toast: (message: string, isError?: boolean) => void;
 } {
   const observer = new MutationObserver(() => {
-    injectButton(onToggle);
+    injectIntoComposer(callbacks.onToggle, callbacks.onCancel);
+    injectIntoQuestionPrompts(callbacks.onToggle, callbacks.onCancel);
   });
 
   observer.observe(document.body, {
@@ -264,16 +333,16 @@ export function setupUI(
     subtree: true,
   });
 
-  injectButton(onToggle);
+  injectIntoComposer(callbacks.onToggle, callbacks.onCancel);
+  injectIntoQuestionPrompts(callbacks.onToggle, callbacks.onCancel);
 
   return {
-    inject: () => injectButton(onToggle),
+    inject: () => {
+      injectIntoComposer(callbacks.onToggle, callbacks.onCancel);
+      injectIntoQuestionPrompts(callbacks.onToggle, callbacks.onCancel);
+    },
     updateState: (state: DictationState, elapsedSeconds = 0) => {
-      const button = document.getElementById(BUTTON_ID) as HTMLButtonElement | null;
+      updateAllButtonStates(state, elapsedSeconds);
-      const timer = document.getElementById(TIMER_ID);
-      if (button && timer) {
-        updateButtonState(button, timer, state, elapsedSeconds);
-      }
     },
     toast: showToast,
   };

tests/insert.test.ts

@@ -73,3 +73,41 @@ describe("submitPrompt", () => {
     expect(clicked).toBe(true);
   });
 });
+
+describe("insertText into question textarea", () => {
+  afterEach(() => {
+    document.body.innerHTML = "";
+  });
+
+  it("should return false when question textarea not found", () => {
+    expect(insertText("hello", "question")).toBe(false);
+  });
+
+  it("should insert text into textarea at cursor position", () => {
+    const textarea = document.createElement("textarea");
+    textarea.setAttribute("data-slot", "question-custom-input");
+    textarea.value = "hello world";
+    textarea.selectionStart = 6;
+    textarea.selectionEnd = 11;
+    document.body.appendChild(textarea);
+
+    const result = insertText("there", "question");
+    expect(result).toBe(true);
+    expect(textarea.value).toBe("hello there");
+    expect(textarea.selectionStart).toBe(11);
+  });
+
+  it("should dispatch input event", () => {
+    let eventCount = 0;
+    const textarea = document.createElement("textarea");
+    textarea.setAttribute("data-slot", "question-custom-input");
+    textarea.value = "";
+    textarea.addEventListener("input", () => {
+      eventCount++;
+    });
+    document.body.appendChild(textarea);
+
+    insertText("test", "question");
+    expect(eventCount).toBeGreaterThanOrEqual(1);
+  });
+});