virtual void OnInvalidateData(int data = 0, bool gui_scope = true)

    {

        if (!IsEditable(this->selected_slot)) {

            this->selected_slot = INVALID_COMPANY;

        }

 

        if (!gui_scope) return;

 

        this->SetWidgetDisabledState(WID_AIC_DECREASE, GetGameSettings().difficulty.max_no_competitors == 0);

        this->SetWidgetDisabledState(WID_AIC_INCREASE, GetGameSettings().difficulty.max_no_competitors == MAX_COMPANIES);

       

        bool is_gs_slot = this->selected_slot == OWNER_DEITY;

        bool invalid_slot = this->selected_slot == INVALID_COMPANY;

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

        this->SetWidgetDisabledState(WID_AIC_CHANGE, invalid_slot || (_game_mode == GM_NORMAL && (is_gs_slot || (IsEditable(this->selected_slot) && is_green_slot))));

        this->SetWidgetDisabledState(WID_AIC_CONFIGURE, invalid_slot || GetConfig(this->selected_slot)->GetConfigList()->size() == 0);

 

        /* Display either Settings or Configure button */

        NWidgetCore *configure_button = this->GetWidget<NWidgetCore>(WID_AIC_CONFIGURE);

        if (_game_mode == GM_NORMAL && !invalid_slot && IsEditable(this->selected_slot) && (is_gs_slot || is_green_slot)) {

            configure_button->SetDataTip(STR_AI_DEBUG_SETTINGS, STR_AI_DEBUG_SETTINGS_TOOLTIP);

        } else {

            configure_button->SetDataTip(STR_AI_CONFIG_CONFIGURE, STR_AI_CONFIG_CONFIGURE_TOOLTIP);

        }

 

        bool is_silver_slot_above = !IsEditable((CompanyID)(this->selected_slot - 1));

        bool is_green_slot_above = IsEditable((CompanyID)(this->selected_slot - 1)) && Company::IsValidAiID(this->selected_slot - 1) && !Company::Get(this->selected_slot - 1)->ai_instance->IsDead();

        this->SetWidgetDisabledState(WID_AIC_MOVE_UP, is_gs_slot || invalid_slot || (IsEditable(this->selected_slot) && is_green_slot) || is_silver_slot_above || is_green_slot_above);

       

        bool is_silver_slot_below = !IsEditable((CompanyID)(this->selected_slot + 1));

        bool is_green_slot_below = IsEditable((CompanyID)(this->selected_slot + 1)) && Company::IsValidAiID(this->selected_slot + 1) && !Company::Get(this->selected_slot + 1)->ai_instance->IsDead();

        this->SetWidgetDisabledState(WID_AIC_MOVE_DOWN, is_gs_slot || invalid_slot || (IsEditable(this->selected_slot) && is_green_slot) || is_silver_slot_below || is_green_slot_below);

 

        for (TextfileType tft = TFT_BEGIN; tft < TFT_END; tft++) {

            this->SetWidgetDisabledState(WID_AIC_TEXTFILE + tft, invalid_slot || (GetConfig(this->selected_slot)->GetTextfile(tft, this->selected_slot) == NULL));

        }

    }