Method loop

src/activities/settings/ButtonRemapActivity.cpp:36–95

void ButtonRemapActivity::onExit() { Activity::onExit(); }

void ButtonRemapActivity::loop() {
  // Clear any temporary warning after its timeout.
  if (errorUntil > 0 && millis() > errorUntil) {
    errorMessage.clear();
    errorUntil = 0;
    requestUpdate();
    return;
  }

  // Side buttons:
  // - Up: reset mapping to defaults and exit.
  // - Down: cancel without saving.
  if (mappedInput.wasPressed(MappedInputManager::Button::Up)) {
    // Persist default mapping immediately so the user can recover quickly.
    SETTINGS.frontButtonBack = CrossPointSettings::FRONT_HW_BACK;
    SETTINGS.frontButtonConfirm = CrossPointSettings::FRONT_HW_CONFIRM;
    SETTINGS.frontButtonLeft = CrossPointSettings::FRONT_HW_LEFT;
    SETTINGS.frontButtonRight = CrossPointSettings::FRONT_HW_RIGHT;
    SETTINGS.saveToFile();
    finish();
    return;
  }

  if (mappedInput.wasPressed(MappedInputManager::Button::Down)) {
    // Exit without changing settings.
    finish();
    return;
  }

  {
    // Make sure UI done rendering before accepting another assignment.
    // This avoids rapid double-presses that can advance the step without a visible redraw.
    RenderLock lock(*this);

    // Wait for a front button press to assign to the current role.
    const int pressedButton = mappedInput.getPressedFrontButton();
    if (pressedButton < 0) {
      return;
    }

    // Update temporary mapping and advance the remap step.
    // Only accept the press if this hardware button isn't already assigned elsewhere.
    if (!validateUnassigned(static_cast<uint8_t>(pressedButton))) {
      requestUpdate();
      return;
    }
    tempMapping[currentStep] = static_cast<uint8_t>(pressedButton);
    currentStep++;

    if (currentStep >= kRoleCount) {
      // All roles assigned; save to settings and exit.
      applyTempMapping();
      SETTINGS.saveToFile();
      finish();
      return;
    }

    requestUpdate();