Function processKeysInBatch

src/ink/components/App.tsx:451–519

(app: App, items: ParsedInput[], _unused1: undefined, _unused2: undefined)

// Helper to process all keys within a single discrete update context.
// discreteUpdates expects (fn, a, b, c, d) -> fn(a, b, c, d)
function processKeysInBatch(app: App, items: ParsedInput[], _unused1: undefined, _unused2: undefined): void {
  // Update interaction time for notification timeout tracking.
  // This is called from the central input handler to avoid having multiple
  // stdin listeners that can cause race conditions and dropped input.
  // Terminal responses (kind: 'response') are automated, not user input.
  // Mode-1003 no-button motion is also excluded — passive cursor drift is
  // not engagement (would suppress idle notifications + defer housekeeping).
  if (items.some(i => i.kind === 'key' || i.kind === 'mouse' && !((i.button & 0x20) !== 0 && (i.button & 0x03) === 3))) {
    updateLastInteractionTime();
  }
  for (const item of items) {
    // Terminal responses (DECRPM, DA1, OSC replies, etc.) are not user
    // input — route them to the querier to resolve pending promises.
    if (item.kind === 'response') {
      app.querier.onResponse(item.response);
      continue;
    }

    // Mouse click/drag events update selection state (fullscreen only).
    // Terminal sends 1-indexed col/row; convert to 0-indexed for the
    // screen buffer. Button bit 0x20 = drag (motion while button held).
    if (item.kind === 'mouse') {
      handleMouseEvent(app, item);
      continue;
    }
    const sequence = item.sequence;

    // Handle terminal focus events (DECSET 1004)
    if (sequence === FOCUS_IN) {
      app.handleTerminalFocus(true);
      const event = new TerminalFocusEvent('terminalfocus');
      app.internal_eventEmitter.emit('terminalfocus', event);
      continue;
    }
    if (sequence === FOCUS_OUT) {
      app.handleTerminalFocus(false);
      // Defensive: if we lost the release event (mouse released outside
      // terminal window — some emulators drop it rather than capturing the
      // pointer), focus-out is the next observable signal that the drag is
      // over. Without this, drag-to-scroll's timer runs until the scroll
      // boundary is hit.
      if (app.props.selection.isDragging) {
        finishSelection(app.props.selection);
        app.props.onSelectionChange();
      }
      const event = new TerminalFocusEvent('terminalblur');
      app.internal_eventEmitter.emit('terminalblur', event);
      continue;
    }

    // Failsafe: if we receive input, the terminal must be focused
    if (!getTerminalFocused()) {
      setTerminalFocused(true);
    }

    // Handle Ctrl+Z (suspend) using parsed key to support both raw (\x1a) and
    // CSI u format (\x1b[122;5u) from Kitty keyboard protocol terminals
    if (item.name === 'z' && item.ctrl && SUPPORTS_SUSPEND) {