Method IsActive

src/auto4_lua.cpp:899–928

	}

	bool LuaCommand::IsActive(const agi::Context *c)
	{
		if (!(cmd_type & cmd::COMMAND_TOGGLE)) return false;

		LuaStackcheck stackcheck(L);

		set_context(L, c);
		stackcheck.check_stack(0);

		GetFeatureFunction("isactive");
		auto subsobj = new LuaAssFile(L, c->ass.get());
		push_value(L, selected_rows(c));
		if (auto active_line = c->selectionController->GetActiveLine())
			push_value(L, active_line->Row + c->ass->Info.size() + c->ass->Styles.size() + 1);

		int err = lua_pcall(L, 3, 1, 0);
		subsobj->ProcessingComplete();

		bool result = false;
		if (err)
			wxLogWarning("Runtime error in Lua macro IsActive function:\n%s", get_wxstring(L, -1));
		else
			result = !!lua_toboolean(L, -1);

		// clean up stack (result or error message)
		stackcheck.check_stack(1);
		lua_pop(L, 1);

		return result;
	}

	// LuaFeatureFilter
	LuaExportFilter::LuaExportFilter(lua_State *L)