bool gs_slot = this->selected_slot == OWNER_DEITY;

bool dead_ai_slot = IsEditable((CompanyID)(this->selected_slot)) && Company::IsValidAiID(this->selected_slot) && !Company::Get(this->selected_slot)->ai_instance->IsDead();

this->SetWidgetDisabledState(WID_AIC_CHANGE, _game_mode == GM_NORMAL && (gs_slot || dead_ai_slot) || this->selected_slot == INVALID_COMPANY);