Method OnPaint

src/network/network_gui.cpp:559–596

	void OnPaint() override
	{
		if (this->servers.NeedRebuild()) {
			this->BuildGUINetworkGameList();
		}
		if (this->servers.NeedResort()) {
			this->SortNetworkGameList();
		}

		NetworkGame *sel = this->server;
		/* 'Refresh' button invisible if no server selected */
		this->SetWidgetDisabledState(WID_NG_REFRESH, sel == nullptr);
		/* 'Join' button disabling conditions */
		this->SetWidgetDisabledState(WID_NG_JOIN, sel == nullptr || // no Selected Server
				sel->status != NGLS_ONLINE || // Server offline
				sel->info.clients_on >= sel->info.clients_max || // Server full
				!sel->info.compatible); // Revision mismatch

		this->SetWidgetLoweredState(WID_NG_REFRESH, sel != nullptr && sel->refreshing);

		/* 'NewGRF Settings' button invisible if no NewGRF is used */
		bool changed = false;
		changed |= this->GetWidget<NWidgetStacked>(WID_NG_NEWGRF_SEL)->SetDisplayedPlane(sel == nullptr || sel->status != NGLS_ONLINE || sel->info.grfconfig.empty() ? SZSP_NONE : 0);
		changed |= this->GetWidget<NWidgetStacked>(WID_NG_NEWGRF_MISSING_SEL)->SetDisplayedPlane(sel == nullptr || sel->status != NGLS_ONLINE || sel->info.grfconfig.empty() || !sel->info.version_compatible || sel->info.compatible ? SZSP_NONE : 0);
		if (changed) {
			this->ReInit();
			return;
		}

#ifdef __EMSCRIPTEN__
		this->SetWidgetDisabledState(WID_NG_SEARCH_INTERNET, true);
		this->SetWidgetDisabledState(WID_NG_SEARCH_LAN, true);
		this->SetWidgetDisabledState(WID_NG_ADD, true);
		this->SetWidgetDisabledState(WID_NG_START, true);
#endif

		this->DrawWidgets();
	}

	StringID GetHeaderString() const
	{