Integrated protobuf as submodule

2018-11-18 22:01:22 +01:00
80 changed files with 637 additions and 2466 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,9 +1,5 @@
 compile_commands.json
 _*/
-build/
 build-*
 *.user
 tags
-*.esgraf48
-*.swp
-*.pdf
--- a/.gitmodules
+++ b/.gitmodules
@ -0,0 +1,3 @@
+[submodule "protobuf"]
+	path = protobuf
+	url = https://github.com/google/protobuf.git
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -2,14 +2,5 @@ cmake_minimum_required(VERSION 3.5)

 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

-include(cmake/conan.cmake)
-conan_cmake_run(CONANFILE conanfile.txt
-	BASIC_SETUP
-	BUILD missing
-)
-
-include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
-conan_basic_setup()
-
+add_subdirectory(protobuf/cmake)
 add_subdirectory(source)
-#add_subdirectory(test)
--- a/cmake/conan.cmake
+++ b/cmake/conan.cmake
@ -1,516 +0,0 @@
-# The MIT License (MIT)
-
-# Copyright (c) 2018 JFrog
-
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-
-# The above copyright notice and this permission notice shall be included in all
-# copies or substantial portions of the Software.
-
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-# SOFTWARE.
-
-
-
-# This file comes from: https://github.com/conan-io/cmake-conan. Please refer
-# to this repository for issues and documentation.
-
-# Its purpose is to wrap and launch Conan C/C++ Package Manager when cmake is called.
-# It will take CMake current settings (os, compiler, compiler version, architecture)
-# and translate them to conan settings for installing and retrieving dependencies.
-
-# It is intended to facilitate developers building projects that have conan dependencies,
-# but it is only necessary on the end-user side. It is not necessary to create conan
-# packages, in fact it shouldn't be use for that. Check the project documentation.
-
-
-include(CMakeParseArguments)
-
-function(_get_msvc_ide_version result)
-    set(${result} "" PARENT_SCOPE)
-    if(NOT MSVC_VERSION VERSION_LESS 1400 AND MSVC_VERSION VERSION_LESS 1500)
-        set(${result} 8 PARENT_SCOPE)
-    elseif(NOT MSVC_VERSION VERSION_LESS 1500 AND MSVC_VERSION VERSION_LESS 1600)
-        set(${result} 9 PARENT_SCOPE)
-    elseif(NOT MSVC_VERSION VERSION_LESS 1600 AND MSVC_VERSION VERSION_LESS 1700)
-        set(${result} 10 PARENT_SCOPE)
-    elseif(NOT MSVC_VERSION VERSION_LESS 1700 AND MSVC_VERSION VERSION_LESS 1800)
-        set(${result} 11 PARENT_SCOPE)
-    elseif(NOT MSVC_VERSION VERSION_LESS 1800 AND MSVC_VERSION VERSION_LESS 1900)
-        set(${result} 12 PARENT_SCOPE)
-    elseif(NOT MSVC_VERSION VERSION_LESS 1900 AND MSVC_VERSION VERSION_LESS 1910)
-        set(${result} 14 PARENT_SCOPE)
-    elseif(NOT MSVC_VERSION VERSION_LESS 1910 AND MSVC_VERSION VERSION_LESS 1920)
-        set(${result} 15 PARENT_SCOPE)
-    else()
-        message(FATAL_ERROR "Conan: Unknown MSVC compiler version [${MSVC_VERSION}]")
-    endif()
-endfunction()
-
-function(conan_cmake_settings result)
-    #message(STATUS "COMPILER " ${CMAKE_CXX_COMPILER})
-    #message(STATUS "COMPILER " ${CMAKE_CXX_COMPILER_ID})
-    #message(STATUS "VERSION " ${CMAKE_CXX_COMPILER_VERSION})
-    #message(STATUS "FLAGS " ${CMAKE_LANG_FLAGS})
-    #message(STATUS "LIB ARCH " ${CMAKE_CXX_LIBRARY_ARCHITECTURE})
-    #message(STATUS "BUILD TYPE " ${CMAKE_BUILD_TYPE})
-    #message(STATUS "GENERATOR " ${CMAKE_GENERATOR})
-    #message(STATUS "GENERATOR WIN64 " ${CMAKE_CL_64})
-
-    message(STATUS "Conan: Automatic detection of conan settings from cmake")
-
-    parse_arguments(${ARGV})
-
-    if(ARGUMENTS_BUILD_TYPE)
-        set(_CONAN_SETTING_BUILD_TYPE ${ARGUMENTS_BUILD_TYPE})
-    elseif(CMAKE_BUILD_TYPE)
-        set(_CONAN_SETTING_BUILD_TYPE ${CMAKE_BUILD_TYPE})
-    else()
-        message(FATAL_ERROR "Please specify in command line CMAKE_BUILD_TYPE (-DCMAKE_BUILD_TYPE=Release)")
-    endif()
-    if(ARGUMENTS_ARCH)
-        set(_CONAN_SETTING_ARCH ${ARGUMENTS_ARCH})
-    endif()
-    #handle -s os setting
-    if(CMAKE_SYSTEM_NAME)
-        #use default conan os setting if CMAKE_SYSTEM_NAME is not defined
-        set(CONAN_SYSTEM_NAME ${CMAKE_SYSTEM_NAME})
-        if(${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
-            set(CONAN_SYSTEM_NAME Macos)
-        endif()
-        set(CONAN_SUPPORTED_PLATFORMS Windows Linux Macos Android iOS FreeBSD WindowsStore)
-        list (FIND CONAN_SUPPORTED_PLATFORMS "${CONAN_SYSTEM_NAME}" _index)
-        if (${_index} GREATER -1)
-            #check if the cmake system is a conan supported one
-            set(_CONAN_SETTING_OS ${CONAN_SYSTEM_NAME})
-        else()
-            message(FATAL_ERROR "cmake system ${CONAN_SYSTEM_NAME} is not supported by conan. Use one of ${CONAN_SUPPORTED_PLATFORMS}")
-        endif()
-    endif()
-
-    get_property(_languages GLOBAL PROPERTY ENABLED_LANGUAGES)
-    if (";${_languages};" MATCHES ";CXX;")
-        set(LANGUAGE CXX)
-        set(USING_CXX 1)
-    elseif (";${_languages};" MATCHES ";C;")
-        set(LANGUAGE C)
-        set(USING_CXX 0)
-    else ()
-        message(FATAL_ERROR "Conan: Neither C or C++ was detected as a language for the project. Unabled to detect compiler version.")
-    endif()
-
-    if (${CMAKE_${LANGUAGE}_COMPILER_ID} STREQUAL GNU)
-        # using GCC
-        # TODO: Handle other params
-        string(REPLACE "." ";" VERSION_LIST ${CMAKE_${LANGUAGE}_COMPILER_VERSION})
-        list(GET VERSION_LIST 0 MAJOR)
-        list(GET VERSION_LIST 1 MINOR)
-        set(COMPILER_VERSION ${MAJOR}.${MINOR})
-        if(${MAJOR} GREATER 4)
-            set(COMPILER_VERSION ${MAJOR})
-        endif()
-        set(_CONAN_SETTING_COMPILER gcc)
-        set(_CONAN_SETTING_COMPILER_VERSION ${COMPILER_VERSION})
-        if (USING_CXX)
-            conan_cmake_detect_gnu_libcxx(_LIBCXX)
-            set(_CONAN_SETTING_COMPILER_LIBCXX ${_LIBCXX})
-        endif ()
-    elseif (${CMAKE_${LANGUAGE}_COMPILER_ID} STREQUAL AppleClang)
-        # using AppleClang
-        string(REPLACE "." ";" VERSION_LIST ${CMAKE_${LANGUAGE}_COMPILER_VERSION})
-        list(GET VERSION_LIST 0 MAJOR)
-        list(GET VERSION_LIST 1 MINOR)
-        set(_CONAN_SETTING_COMPILER apple-clang)
-        set(_CONAN_SETTING_COMPILER_VERSION ${MAJOR}.${MINOR})
-        if (USING_CXX)
-            set(_CONAN_SETTING_COMPILER_LIBCXX libc++)
-        endif ()
-    elseif (${CMAKE_${LANGUAGE}_COMPILER_ID} STREQUAL Clang)
-        string(REPLACE "." ";" VERSION_LIST ${CMAKE_${LANGUAGE}_COMPILER_VERSION})
-        list(GET VERSION_LIST 0 MAJOR)
-        list(GET VERSION_LIST 1 MINOR)
-        if(APPLE)
-            cmake_policy(GET CMP0025 APPLE_CLANG_POLICY_ENABLED)
-            if(NOT APPLE_CLANG_POLICY_ENABLED)
-                message(STATUS "Conan: APPLE and Clang detected. Assuming apple-clang compiler. Set CMP0025 to avoid it")
-                set(_CONAN_SETTING_COMPILER apple-clang)
-                set(_CONAN_SETTING_COMPILER_VERSION ${MAJOR}.${MINOR})
-            else()
-                set(_CONAN_SETTING_COMPILER clang)
-                set(_CONAN_SETTING_COMPILER_VERSION ${MAJOR}.${MINOR})
-            endif()
-            if (USING_CXX)
-                set(_CONAN_SETTING_COMPILER_LIBCXX libc++)
-            endif ()
-        else()
-            set(_CONAN_SETTING_COMPILER clang)
-            if(${MAJOR} GREATER 7)
-                set(_CONAN_SETTING_COMPILER_VERSION ${MAJOR})
-            else()
-                set(_CONAN_SETTING_COMPILER_VERSION ${MAJOR}.${MINOR})
-            endif()
-            if (USING_CXX)
-                conan_cmake_detect_gnu_libcxx(_LIBCXX)
-                set(_CONAN_SETTING_COMPILER_LIBCXX ${_LIBCXX})
-            endif ()
-        endif()
-    elseif(${CMAKE_${LANGUAGE}_COMPILER_ID} STREQUAL MSVC)
-        set(_VISUAL "Visual Studio")
-        _get_msvc_ide_version(_VISUAL_VERSION)
-        if("${_VISUAL_VERSION}" STREQUAL "")
-            message(FATAL_ERROR "Conan: Visual Studio not recognized")
-        else()
-            set(_CONAN_SETTING_COMPILER ${_VISUAL})
-            set(_CONAN_SETTING_COMPILER_VERSION ${_VISUAL_VERSION})
-        endif()
-
-        if(NOT _CONAN_SETTING_ARCH)
-            if (MSVC_${LANGUAGE}_ARCHITECTURE_ID MATCHES "64")
-                set(_CONAN_SETTING_ARCH x86_64)
-            elseif (MSVC_${LANGUAGE}_ARCHITECTURE_ID MATCHES "^ARM")
-                message(STATUS "Conan: Using default ARM architecture from MSVC")
-                set(_CONAN_SETTING_ARCH armv6)
-            elseif (MSVC_${LANGUAGE}_ARCHITECTURE_ID MATCHES "86")
-                set(_CONAN_SETTING_ARCH x86)
-            else ()
-                message(FATAL_ERROR "Conan: Unknown MSVC architecture [${MSVC_${LANGUAGE}_ARCHITECTURE_ID}]")
-            endif()
-        endif()
-
-        conan_cmake_detect_vs_runtime(_vs_runtime)
-        message(STATUS "Conan: Detected VS runtime: ${_vs_runtime}")
-        set(_CONAN_SETTING_COMPILER_RUNTIME ${_vs_runtime})
-
-        if (CMAKE_GENERATOR_TOOLSET)
-            set(_CONAN_SETTING_COMPILER_TOOLSET ${CMAKE_VS_PLATFORM_TOOLSET})
-        elseif(CMAKE_VS_PLATFORM_TOOLSET AND (CMAKE_GENERATOR STREQUAL "Ninja"))
-            set(_CONAN_SETTING_COMPILER_TOOLSET ${CMAKE_VS_PLATFORM_TOOLSET})
-        endif()
-    else()
-        message(FATAL_ERROR "Conan: compiler setup not recognized")
-    endif()
-
-    # If profile is defined it is used
-    if(CMAKE_BUILD_TYPE STREQUAL "Debug" AND ARGUMENTS_DEBUG_PROFILE)
-        set(_SETTINGS -pr ${ARGUMENTS_DEBUG_PROFILE})
-    elseif(CMAKE_BUILD_TYPE STREQUAL "Release" AND ARGUMENTS_RELEASE_PROFILE)
-        set(_SETTINGS -pr ${ARGUMENTS_RELEASE_PROFILE})
-    elseif(CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo" AND ARGUMENTS_RELWITHDEBINFO_PROFILE)
-        set(_SETTINGS -pr ${ARGUMENTS_RELWITHDEBINFO_PROFILE})
-    elseif(CMAKE_BUILD_TYPE STREQUAL "MinSizeRel" AND ARGUMENTS_MINSIZEREL_PROFILE)
-        set(_SETTINGS -pr ${ARGUMENTS_MINSIZEREL_PROFILE})
-    elseif(ARGUMENTS_PROFILE)
-        set(_SETTINGS -pr ${ARGUMENTS_PROFILE})
-    endif()
-
-    if(NOT _SETTINGS OR ARGUMENTS_PROFILE_AUTO STREQUAL "ALL")
-        set(ARGUMENTS_PROFILE_AUTO arch build_type compiler compiler.version
-                                   compiler.runtime compiler.libcxx compiler.toolset)
-    endif()
-
-    # Automatic from CMake
-    foreach(ARG ${ARGUMENTS_PROFILE_AUTO})
-        string(TOUPPER ${ARG} _arg_name)
-        string(REPLACE "." "_" _arg_name ${_arg_name})
-        if(_CONAN_SETTING_${_arg_name})
-            set(_SETTINGS ${_SETTINGS} -s ${ARG}=${_CONAN_SETTING_${_arg_name}})
-        endif()
-    endforeach()
-
-    foreach(ARG ${ARGUMENTS_SETTINGS})
-        set(_SETTINGS ${_SETTINGS} -s ${ARG})
-    endforeach()
-
-    message(STATUS "Conan: Settings= ${_SETTINGS}")
-
-    set(${result} ${_SETTINGS} PARENT_SCOPE)
-endfunction()
-
-
-function(conan_cmake_detect_gnu_libcxx result)
-    # Allow -D_GLIBCXX_USE_CXX11_ABI=ON/OFF as argument to cmake
-    if(DEFINED _GLIBCXX_USE_CXX11_ABI)
-        if(_GLIBCXX_USE_CXX11_ABI)
-            set(${result} libstdc++11 PARENT_SCOPE)
-            return()
-        else()
-            set(${result} libstdc++ PARENT_SCOPE)
-            return()
-        endif()
-    endif()
-
-    # Check if there's any add_definitions(-D_GLIBCXX_USE_CXX11_ABI=0)
-    get_directory_property(defines DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} COMPILE_DEFINITIONS)
-    foreach(define ${defines})
-        if(define STREQUAL "_GLIBCXX_USE_CXX11_ABI=0")
-            set(${result} libstdc++ PARENT_SCOPE)
-            return()
-        endif()
-    endforeach()
-
-    # Use C++11 stdlib as default if gcc is 5.1+
-    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.1")
-      set(${result} libstdc++ PARENT_SCOPE)
-    else()
-      set(${result} libstdc++11 PARENT_SCOPE)
-    endif()
-endfunction()
-
-
-function(conan_cmake_detect_vs_runtime result)
-    string(TOUPPER ${CMAKE_BUILD_TYPE} build_type)
-    set(variables CMAKE_CXX_FLAGS_${build_type} CMAKE_C_FLAGS_${build_type} CMAKE_CXX_FLAGS CMAKE_C_FLAGS)
-    foreach(variable ${variables})
-        string(REPLACE " " ";" flags ${${variable}})
-        foreach (flag ${flags})
-            if(${flag} STREQUAL "/MD" OR ${flag} STREQUAL "/MDd" OR ${flag} STREQUAL "/MT" OR ${flag} STREQUAL "/MTd")
-                string(SUBSTRING ${flag} 1 -1 runtime)
-                set(${result} ${runtime} PARENT_SCOPE)
-                return()
-            endif()
-        endforeach()
-    endforeach()
-    if(${build_type} STREQUAL "DEBUG")
-        set(${result} "MDd" PARENT_SCOPE)
-    else()
-        set(${result} "MD" PARENT_SCOPE)
-    endif()
-endfunction()
-
-
-macro(parse_arguments)
-  set(options BASIC_SETUP CMAKE_TARGETS UPDATE KEEP_RPATHS NO_OUTPUT_DIRS OUTPUT_QUIET)
-  set(oneValueArgs CONANFILE DEBUG_PROFILE RELEASE_PROFILE RELWITHDEBINFO_PROFILE MINSIZEREL_PROFILE
-                   PROFILE ARCH BUILD_TYPE INSTALL_FOLDER CONAN_COMMAND)
-  set(multiValueArgs REQUIRES OPTIONS IMPORTS SETTINGS BUILD ENV GENERATORS PROFILE_AUTO)
-  cmake_parse_arguments(ARGUMENTS "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-endmacro()
-
-function(conan_cmake_install)
-    # Calls "conan install"
-    # Argument BUILD is equivalant to --build={missing, PkgName,...} or
-    # --build when argument is 'BUILD all' (which builds all packages from source)
-    # Argument CONAN_COMMAND, to specify the conan path, e.g. in case of running from source
-    # cmake does not identify conan as command, even if it is +x and it is in the path
-    parse_arguments(${ARGV})
-
-    if(CONAN_CMAKE_MULTI)
-        set(ARGUMENTS_GENERATORS ${ARGUMENTS_GENERATORS} cmake_multi)
-    else()
-        set(ARGUMENTS_GENERATORS ${ARGUMENTS_GENERATORS} cmake)
-    endif()
-
-    set(CONAN_BUILD_POLICY "")
-    foreach(ARG ${ARGUMENTS_BUILD})
-        if(${ARG} STREQUAL "all")
-            set(CONAN_BUILD_POLICY ${CONAN_BUILD_POLICY} --build)
-            break()
-        else()
-            set(CONAN_BUILD_POLICY ${CONAN_BUILD_POLICY} --build=${ARG})
-        endif()
-    endforeach()
-    if(ARGUMENTS_CONAN_COMMAND)
-       set(conan_command ${ARGUMENTS_CONAN_COMMAND})
-    else()
-      set(conan_command conan)
-    endif()
-    set(CONAN_OPTIONS "")
-    if(ARGUMENTS_CONANFILE)
-      set(CONANFILE ${CMAKE_CURRENT_SOURCE_DIR}/${ARGUMENTS_CONANFILE})
-      # A conan file has been specified - apply specified options as well if provided
-      foreach(ARG ${ARGUMENTS_OPTIONS})
-          set(CONAN_OPTIONS ${CONAN_OPTIONS} -o=${ARG})
-      endforeach()
-    else()
-      set(CONANFILE ".")
-    endif()
-    if(ARGUMENTS_UPDATE)
-      set(CONAN_INSTALL_UPDATE --update)
-    endif()
-    set(CONAN_INSTALL_FOLDER "")
-    if(ARGUMENTS_INSTALL_FOLDER)
-      set(CONAN_INSTALL_FOLDER -if=${ARGUMENTS_INSTALL_FOLDER})
-    endif()
-    foreach(ARG ${ARGUMENTS_GENERATORS})
-        set(CONAN_GENERATORS ${CONAN_GENERATORS} -g=${ARG})
-    endforeach()
-    foreach(ARG ${ARGUMENTS_ENV})
-        set(CONAN_ENV_VARS ${CONAN_ENV_VARS} -e=${ARG})
-    endforeach()
-    set(conan_args install ${CONANFILE} ${settings} ${CONAN_ENV_VARS} ${CONAN_GENERATORS} ${CONAN_BUILD_POLICY} ${CONAN_INSTALL_UPDATE} ${CONAN_OPTIONS} ${CONAN_INSTALL_FOLDER})
-
-    string (REPLACE ";" " " _conan_args "${conan_args}")
-    message(STATUS "Conan executing: ${conan_command} ${_conan_args}")
-
-    if(ARGUMENTS_OUTPUT_QUIET)
-      set(OUTPUT_CONTROL OUTPUT_QUIET)
-    endif()
-
-    execute_process(COMMAND ${conan_command} ${conan_args}
-                     RESULT_VARIABLE return_code
-                     OUTPUT_VARIABLE conan_output
-                     ERROR_VARIABLE conan_output					 
-                     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-
-    message(STATUS "${conan_output}")
-				 
-    if(NOT "${return_code}" STREQUAL "0")
-      message(FATAL_ERROR "Conan install failed='${return_code}'")
-    endif()
-
-endfunction()
-
-
-function(conan_cmake_setup_conanfile)
-  parse_arguments(${ARGV})
-  if(ARGUMENTS_CONANFILE)
-    # configure_file will make sure cmake re-runs when conanfile is updated
-    configure_file(${ARGUMENTS_CONANFILE} ${ARGUMENTS_CONANFILE}.junk)
-    file(REMOVE ${CMAKE_CURRENT_BINARY_DIR}/${ARGUMENTS_CONANFILE}.junk)
-  else()
-    conan_cmake_generate_conanfile(${ARGV})
-  endif()
-endfunction()
-
-function(conan_cmake_generate_conanfile)
-  # Generate, writing in disk a conanfile.txt with the requires, options, and imports
-  # specified as arguments
-  # This will be considered as temporary file, generated in CMAKE_CURRENT_BINARY_DIR)
-  parse_arguments(${ARGV})
-  set(_FN "${CMAKE_CURRENT_BINARY_DIR}/conanfile.txt")
-
-  file(WRITE ${_FN} "[generators]\ncmake\n\n[requires]\n")
-  foreach(ARG ${ARGUMENTS_REQUIRES})
-    file(APPEND ${_FN} ${ARG} "\n")
-  endforeach()
-
-  file(APPEND ${_FN} ${ARG} "\n[options]\n")
-  foreach(ARG ${ARGUMENTS_OPTIONS})
-    file(APPEND ${_FN} ${ARG} "\n")
-  endforeach()
-
-  file(APPEND ${_FN} ${ARG} "\n[imports]\n")
-  foreach(ARG ${ARGUMENTS_IMPORTS})
-    file(APPEND ${_FN} ${ARG} "\n")
-  endforeach()
-endfunction()
-
-
-macro(conan_load_buildinfo)
-    if(CONAN_CMAKE_MULTI)
-      set(_CONANBUILDINFO conanbuildinfo_multi.cmake)
-    else()
-      set(_CONANBUILDINFO conanbuildinfo.cmake)
-    endif()
-    # Checks for the existence of conanbuildinfo.cmake, and loads it
-    # important that it is macro, so variables defined at parent scope
-    if(EXISTS "${CMAKE_CURRENT_BINARY_DIR}/${_CONANBUILDINFO}")
-      message(STATUS "Conan: Loading ${_CONANBUILDINFO}")
-      include(${CMAKE_CURRENT_BINARY_DIR}/${_CONANBUILDINFO})
-    else()
-      message(FATAL_ERROR "${_CONANBUILDINFO} doesn't exist in ${CMAKE_CURRENT_BINARY_DIR}")
-    endif()
-endmacro()
-
-
-macro(conan_cmake_run)
-    parse_arguments(${ARGV})
-
-    if(CMAKE_CONFIGURATION_TYPES AND NOT CMAKE_BUILD_TYPE AND NOT CONAN_EXPORTED
-            AND NOT ARGUMENTS_BUILD_TYPE)
-        set(CONAN_CMAKE_MULTI ON)
-        message(STATUS "Conan: Using cmake-multi generator")
-    else()
-        set(CONAN_CMAKE_MULTI OFF)
-    endif()
-
-    if(NOT CONAN_EXPORTED)
-        conan_cmake_setup_conanfile(${ARGV})
-        if(CONAN_CMAKE_MULTI)
-            foreach(CMAKE_BUILD_TYPE "Release" "Debug")
-                set(ENV{CONAN_IMPORT_PATH} ${CMAKE_BUILD_TYPE})
-                conan_cmake_settings(settings ${ARGV})
-                conan_cmake_install(SETTINGS ${settings} ${ARGV})
-            endforeach()
-            set(CMAKE_BUILD_TYPE)
-        else()
-            conan_cmake_settings(settings ${ARGV})
-            conan_cmake_install(SETTINGS ${settings} ${ARGV})
-        endif()
-    endif()
-
-    conan_load_buildinfo()
-
-    if(ARGUMENTS_BASIC_SETUP)
-        foreach(_option CMAKE_TARGETS KEEP_RPATHS NO_OUTPUT_DIRS)
-            if(ARGUMENTS_${_option})
-                if(${_option} STREQUAL "CMAKE_TARGETS")
-                    list(APPEND _setup_options "TARGETS")
-                else()
-                    list(APPEND _setup_options ${_option})
-                endif()
-            endif()
-        endforeach()
-        conan_basic_setup(${_setup_options})
-    endif()
-endmacro()
-
-macro(conan_check)
-    # Checks conan availability in PATH
-    # Arguments REQUIRED and VERSION are optional
-    # Example usage:
-    #    conan_check(VERSION 1.0.0 REQUIRED)
-    message(STATUS "Conan: checking conan executable in path")
-    set(options REQUIRED)
-    set(oneValueArgs VERSION)
-    cmake_parse_arguments(CONAN "${options}" "${oneValueArgs}" "" ${ARGN})
-
-    find_program(CONAN_CMD conan)
-    if(NOT CONAN_CMD AND CONAN_REQUIRED)
-        message(FATAL_ERROR "Conan executable not found!")
-    endif()
-    message(STATUS "Conan: Found program ${CONAN_CMD}")
-    execute_process(COMMAND ${CONAN_CMD} --version
-                    OUTPUT_VARIABLE CONAN_VERSION_OUTPUT
-                    ERROR_VARIABLE CONAN_VERSION_OUTPUT)
-    message(STATUS "Conan: Version found ${CONAN_VERSION_OUTPUT}")
-
-    if(DEFINED CONAN_VERSION)
-        string(REGEX MATCH ".*Conan version ([0-9]+\.[0-9]+\.[0-9]+)" FOO
-            "${CONAN_VERSION_OUTPUT}")
-        if(${CMAKE_MATCH_1} VERSION_LESS ${CONAN_VERSION})
-            message(FATAL_ERROR "Conan outdated. Installed: ${CONAN_VERSION}, \
-                required: ${CONAN_VERSION_REQUIRED}. Consider updating via 'pip \
-                install conan --upgrade'.")
-        endif()
-    endif()
-endmacro()
-
-macro(conan_add_remote)
-    # Adds a remote
-    # Arguments URL and NAME are required, INDEX is optional
-    # Example usage:
-    #    conan_add_remote(NAME bincrafters INDEX 1
-    #       URL https://api.bintray.com/conan/bincrafters/public-conan)
-    set(oneValueArgs URL NAME INDEX)
-    cmake_parse_arguments(CONAN "" "${oneValueArgs}" "" ${ARGN})
-
-    if(DEFINED CONAN_INDEX)
-        set(CONAN_INDEX_ARG "-i ${CONAN_INDEX}")
-    endif()
-
-    message(STATUS "Conan: Adding ${CONAN_NAME} remote repositoy (${CONAN_URL})")
-    execute_process(COMMAND ${CONAN_CMD} remote add ${CONAN_NAME} ${CONAN_URL}
-      ${CONAN_INDEX_ARG} -f)
-endmacro()
-
--- a/conanfile.txt
+++ b/conanfile.txt
@ -1,13 +0,0 @@
-[requires]
-qt/5.12.0@bincrafters/stable
-protobuf/3.6.1@bincrafters/stable
-protoc_installer/3.6.1@bincrafters/stable
-catch2/2.4.2@bincrafters/stable
-
-[generators]
-cmake
-
-[options]
-protobuf:shared=False
-qt:qttools=True
-qt:qttranslations=True
--- a/proto/DativModel.proto
+++ b/proto/DativModel.proto
@ -6,14 +6,14 @@ message DativModel
 {
 	message TiereModel
 	{
-		bool Affe = 1;
-		bool Gans = 2;
-		bool Tiger = 3;
-		bool Hund = 4;
-		bool Elefant = 5;
+		bool Tiger = 1;
+		bool Katze = 2;
+		bool Affe = 3;
+		bool Gans = 4;
+		bool Baer = 5;
 		bool Pferd = 6;
-		bool Baer = 7;
-		bool Katze = 8;
+		bool Hund = 7;
+		bool Elefant = 8;
 	}

 	message VersteckeModel
@ -28,19 +28,19 @@ message DativModel
 		bool Baum2 = 8;
 	}

-	message NomTiereModel
+	message FutterModel
 	{
-		bool Gans = 1;
-		bool Tiger = 2;
-		bool Hund = 3;
-		bool Affe = 4;
-		bool Elefant = 5;
-		bool Pferd = 6;
-		bool Baer = 7;
-		bool Katze = 8;
+		bool Salat = 1;
+		bool Fleisch = 2;
+		bool Knochen = 3;
+		bool Banane = 4;
+		bool Apfel = 5;
+		bool Karotte = 6;
+		bool Honig = 7;
+		bool Zucker = 8;
 	}

 	TiereModel Tiere = 1;
 	VersteckeModel Verstecke = 2;
-	NomTiereModel NomTiere = 3;
+	FutterModel Futter = 3;
 }
--- a/1
+++ b/1
@ -0,0 +1 @@
+Subproject commit 59133296a6e5d5017074e036557ebb658e49d435
--- a/source/Age/Age.cpp
+++ b/source/Age/Age.cpp
@ -4,8 +4,8 @@
 #include <sstream>

 Age::Age(unsigned int years, unsigned int months)
-    : m_years(years)
-    , m_months(months)
+	: m_years(years)
+	, m_months(months)
 {
 }

--- a/source/Age/Age.h
+++ b/source/Age/Age.h
--- a/source/Age/CMakeLists.txt
+++ b/source/Age/CMakeLists.txt
@ -1,23 +0,0 @@
-cmake_minimum_required(VERSION 3.6)
-
-project(Age LANGUAGES CXX)
-
-find_package(Qt5Core REQUIRED)
-
-add_library(${PROJECT_NAME}
-	Age.cpp
-)
-
-set_target_properties(${PROJECT_NAME}
-	PROPERTIES CXX_STANDARD 14
-)
-
-target_include_directories(${PROJECT_NAME}
-    PUBLIC
-        ${CMAKE_CURRENT_SOURCE_DIR}
-)
-
-target_link_libraries(${PROJECT_NAME}
-	PUBLIC
-		Qt5::Core
-)
--- a/source/CMakeLists.txt
+++ b/source/CMakeLists.txt
@ -1,24 +1,6 @@
 cmake_minimum_required(VERSION 3.6)

-set(BUILD_VERSION_MAJOR_MINOR 0.6)
-
-if ($ENV{BUILD_NUMBER})
-	set(BUILD_VERSION_PATCH $ENV{BUILD_NUMBER})
-else()
-	set(BUILD_VERSION_PATCH 0)
-endif()
-
-project(ESGRAF48
-	VERSION ${BUILD_VERSION_MAJOR_MINOR}.${BUILD_VERSION_PATCH}
-	DESCRIPTION "ESGRAF 4-8"
-	LANGUAGES CXX
-)
-
-configure_file(
-	version.h.in
-	version.h
-)
-
+project(ESGRAF48 LANGUAGES CXX)

 find_package(Qt5Widgets REQUIRED)
 find_package(Qt5PrintSupport REQUIRED)
@ -52,9 +34,10 @@ protobuf_generate_cpp(DataModel_PROTO_SRCS DataModel_PROTO_HDRS
 	${DataModel_PROTO_FILES})

 add_executable(${PROJECT_NAME} WIN32
-	ESGRAF48.cpp
+	LogoTest.cpp
 	DataModel.cpp
 	mainwindow.cpp
+	Age.cpp
 	${LOGO_TEST_UI}
 	${LOGO_TEST_QRC}
 	${DataModel_PROTO_SRCS}
@ -74,11 +57,9 @@ target_include_directories(${PROJECT_NAME}

 target_link_libraries(${PROJECT_NAME}
 	PRIVATE
-		Age
 		CheckableItem
 		CheckableTest
 		CheckableTestModel
-		PrintableModel
 		MetaData
 		VerbEnd
 		Plural
@ -92,30 +73,9 @@ target_link_libraries(${PROJECT_NAME}
 		${Protobuf_LIBRARIES}
 )

-if (WIN32)
-	get_target_property(_qmake_executable Qt5::qmake IMPORTED_LOCATION)
-	message(STATUS "_qmake_executable: ${_qmake_executable}")
-
-	get_filename_component(_qt_bin_dir "${_qmake_executable}" DIRECTORY)
-	message(STATUS "_qt_bin_dir: ${_qt_bin_dir}")
-
-	find_program(WINDEPLOYQT_EXECUTABLE windeployqt HINTS "${_qt_bin_dir}")
-
-	if (WINDEPLOYQT_EXECUTABLE)
-		message(STATUS "Found ${WINDEPLOYQT_EXECUTABLE}")
-	else()
-		message(FATAL_ERROR "Unable to find windeployqt")
-	endif()
-
-	add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
-		COMMAND ${WINDEPLOYQT_EXECUTABLE} $<TARGET_FILE:${PROJECT_NAME}>)
-endif()
-
-add_subdirectory(Age)
 add_subdirectory(CheckableItem)
 add_subdirectory(CheckableTest)
 add_subdirectory(CheckableTestModel)
-add_subdirectory(PrintableModel)

 add_subdirectory(MetaData)
 add_subdirectory(SubTests)
--- a/source/CheckableItem/CheckableItem.cpp
+++ b/source/CheckableItem/CheckableItem.cpp
@ -34,3 +34,24 @@ unsigned int CheckableItem::points() const
 {
 	return m_checked ? m_value : 0;
 }
+
+void CheckableItem::write(QJsonObject &json) const
+{
+	json["text"] = m_text.c_str();
+	json["checked"] = m_checked;
+}
+
+void CheckableItem::read(const QJsonObject &json)
+{
+	const auto &text = json["text"];
+	if (text.isString())
+	{
+		m_text = text.toString().toStdString();
+	}
+
+	const auto &checked = json["checked"];
+	if (checked.isBool())
+	{
+		m_checked = checked.toBool();
+	}
+}
--- a/source/CheckableItem/CheckableItem.h
+++ b/source/CheckableItem/CheckableItem.h
@ -24,4 +24,7 @@ public:
 	void setValue(unsigned int value);

 	unsigned int points() const;
+
+	void write(QJsonObject &json) const;
+	void read(const QJsonObject &json);
 };
--- a/source/CheckableItem/CheckableItems.cpp
+++ b/source/CheckableItem/CheckableItems.cpp
@ -2,8 +2,6 @@

 #include <QJsonArray>

-#include <numeric>
-
 CheckableItems::CheckableItems(std::initializer_list<std::string> itemNames)
 {
 	for (const auto &itemName : itemNames)
@ -12,9 +10,27 @@ CheckableItems::CheckableItems(std::initializer_list<std::string> itemNames)
 	}
 }

-unsigned int CheckableItems::getPoints() const
+void CheckableItems::write(QJsonArray &json) const
 {
-	return std::accumulate(begin(), end(), 0, [](int base, const CheckableItem &item) {
-		return base + item.points();
-	});
+	for (const auto &item : *this)
+	{
+		QJsonObject itemObject;
+		item.write(itemObject);
+		json.append(itemObject);
+	}
+}
+
+void CheckableItems::read(const QJsonArray &json)
+{
+	clear();
+
+	for (const auto &itemObject : json)
+	{
+		if (itemObject.isObject())
+		{
+			CheckableItem item;
+			item.read(itemObject.toObject());
+			emplace_back(item);
+		}
+	}
 }
--- a/source/CheckableItem/CheckableItems.h
+++ b/source/CheckableItem/CheckableItems.h
@ -10,5 +10,6 @@ class CheckableItems : public std::vector<CheckableItem>
 public:
 	CheckableItems(std::initializer_list<std::string> itemNames);

-	unsigned int getPoints() const;
+	void write(QJsonArray &json) const;
+	void read(const QJsonArray &json);
 };
--- a/source/CheckableTest/CheckableTest.cpp
+++ b/source/CheckableTest/CheckableTest.cpp
@ -1,7 +1,5 @@
 #include "CheckableTest.h"

-#include <numeric>
-
 CheckableTest::CheckableTest(
 	const char *name, std::initializer_list<std::string> items)
 	: m_name(name)
@ -28,8 +26,3 @@ CheckableItems &CheckableTest::items()
 {
 	return m_items;
 }
-	
-unsigned int CheckableTest::getPoints() const
-{
-	return m_items.getPoints();
-}
--- a/source/CheckableTest/CheckableTest.h
+++ b/source/CheckableTest/CheckableTest.h
@ -17,8 +17,6 @@ public:
 	const QString &name() const;
 	const CheckableItems &items() const;
 	CheckableItems &items();
-
-	unsigned int getPoints() const;
 };

 using CheckableTests = std::vector<CheckableTest>;
--- a/source/CheckableTestModel/CMakeLists.txt
+++ b/source/CheckableTestModel/CMakeLists.txt
@ -18,9 +18,8 @@ target_include_directories(${PROJECT_NAME}
 )

 target_link_libraries(${PROJECT_NAME}
-	PUBLIC
+	PRIVATE
 		CheckableItem
 		CheckableTest
-	PRIVATE
 		Qt5::Core
 )
--- a/source/CheckableTestModel/CheckableTestModel.cpp
+++ b/source/CheckableTestModel/CheckableTestModel.cpp
@ -5,13 +5,13 @@
 #include <QDebug>

 CheckableTestModel::CheckableTestModel(QObject *parent)
-    : QAbstractTableModel(parent)
+	: QAbstractTableModel(parent)
 {
 }

 int CheckableTestModel::rowCount(const QModelIndex &) const
 {
-	return static_cast<int>(m_tests.size());
+    return static_cast<int>(m_tests.size());
 }

 int CheckableTestModel::columnCount(const QModelIndex &) const
@ -20,7 +20,7 @@ int CheckableTestModel::columnCount(const QModelIndex &) const

 	for (const auto &test : m_tests)
 	{
-		columnCount = std::max(columnCount, static_cast<int>(test.size()));
+        columnCount = std::max(columnCount, static_cast<int>(test.size()));
 	}

 	return columnCount;
@ -37,17 +37,17 @@ QVariant CheckableTestModel::data(const QModelIndex &index, int role) const
 	{
 		auto &item = getItem(index);

-		switch (role)
-		{
-			case Qt::DisplayRole:
-			{
-				return item.getText().c_str();
-			}
-			case Qt::CheckStateRole:
-			{
-				return item.isChecked() ? Qt::Checked : Qt::Unchecked;
-			}
-		}
+        switch (role)
+        {
+            case Qt::DisplayRole:
+            {
+                return item.getText().c_str();
+            }
+            case Qt::CheckStateRole:
+            {
+                return item.isChecked() ? Qt::Checked : Qt::Unchecked;
+            }
+        }
 	}
 	catch (std::runtime_error &e)
 	{
@ -67,7 +67,8 @@ Qt::ItemFlags CheckableTestModel::flags(const QModelIndex &index) const
 	return Qt::NoItemFlags;
 }

-bool CheckableTestModel::setData(const QModelIndex &index, const QVariant &value, int role)
+bool CheckableTestModel::setData(
+	const QModelIndex &index, const QVariant &value, int role)
 {
 	if (!isValidIndex(index))
 	{
@ -92,33 +93,42 @@ bool CheckableTestModel::setData(const QModelIndex &index, const QVariant &value
 	return false;
 }

-QVariant CheckableTestModel::headerData(int section, Qt::Orientation orientation, int role) const
+QVariant CheckableTestModel::headerData(
+	int section, Qt::Orientation orientation, int role) const
 {
-	switch (orientation)
+	if (role == Qt::DisplayRole && orientation == Qt::Vertical)
 	{
-		case Qt::Vertical:
+		if (section < m_tests.size())
 		{
-			switch (role)
-			{
-				case Qt::DisplayRole:
-				{
-					if (section < m_tests.size())
-					{
-						return m_tests.at(section).name();
-					}
-				}
-				case Qt::SizeHintRole:
-				{
-					return QSize(200, 0);
-				}
-			}
-			break;
+			return m_tests.at(section).name();
 		}
-		default:
-			break;
 	}

-	return QAbstractTableModel::headerData(section, orientation, role);
+    return QAbstractTableModel::headerData(section, orientation, role);
+}
+
+void CheckableTestModel::write(QJsonObject &json) const
+{
+	for (const auto &test : m_tests)
+	{
+		QJsonArray testData;
+		test.items().write(testData);
+		json[test.name()] = testData;
+	}
+}
+
+void CheckableTestModel::read(const QJsonObject &json)
+{
+	for (auto &test : m_tests)
+	{
+		auto testData = json[test.name()];
+		if (testData.isArray())
+		{
+			test.items().read(testData.toArray());
+		}
+	}
+
+	emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
 }

 bool CheckableTestModel::isValidIndex(const QModelIndex &index) const
@ -141,7 +151,8 @@ CheckableItems &CheckableTestModel::getItems(const QModelIndex &index)
 	throw std::runtime_error("invalid index");
 }

-const CheckableItems &CheckableTestModel::getItems(const QModelIndex &index) const
+const CheckableItems &CheckableTestModel::getItems(
+	const QModelIndex &index) const
 {
 	if (index.row() < m_tests.size())
 	{
@ -175,7 +186,7 @@ const CheckableItem &CheckableTestModel::getItem(const QModelIndex &index) const

 unsigned int CheckableTestModel::getPoints() const
 {
-	unsigned int points = 0;
+    unsigned int points = 0;

 	for (const auto &test : m_tests)
 	{
@ -187,8 +198,3 @@ unsigned int CheckableTestModel::getPoints() const

 	return points;
 }
-
-QString CheckableTestModel::getTitle() const
-{
-	return m_title;
-}
--- a/source/CheckableTestModel/CheckableTestModel.h
+++ b/source/CheckableTestModel/CheckableTestModel.h
@ -8,7 +8,6 @@ class CheckableTestModel : public QAbstractTableModel
 	Q_OBJECT

 protected:
-	QString m_title;
 	CheckableTests m_tests;

 public:
@ -17,17 +16,20 @@ public:
 	int rowCount(const QModelIndex &parent = QModelIndex()) const override;
 	int columnCount(const QModelIndex &parent = QModelIndex()) const override;

-	QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+	QVariant data(
+		const QModelIndex &index, int role = Qt::DisplayRole) const override;
 	Qt::ItemFlags flags(const QModelIndex &index) const override;
-	bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;
+	bool setData(const QModelIndex &index, const QVariant &value,
+		int role = Qt::EditRole) override;

 	QVariant headerData(int section, Qt::Orientation orientation,
-	                    int role = Qt::DisplayRole) const override;
+		int role = Qt::DisplayRole) const override;
+
+	void write(QJsonObject &json) const;
+	void read(const QJsonObject &json);

 	unsigned int getPoints() const;

-	QString getTitle() const;
-
 protected:
 	virtual bool isValidIndex(const QModelIndex &index) const;

--- a/source/DataModel.cpp
+++ b/source/DataModel.cpp
@ -1,8 +1,6 @@
 #include "DataModel.h"
 #include "DataModel.pb.h"

-#include <QFile>
-
 #include <sstream>

 DataModel::DataModel(QObject *parent)
@ -14,10 +12,7 @@ DataModel::DataModel(QObject *parent)
    , m_results(this)
    , m_akkusativ(this)
    , m_dativ(this)
-    , m_wfModel(this)
-    , m_otModel(this)
-    , m_tPrModel(this)
-    , m_tPeModel(this)
+    , m_v2Svk(this)
    , m_passiv(this)
    , m_genitiv(this)
 {
@ -27,72 +22,37 @@ DataModel::DataModel(QObject *parent)
 	connect(&m_verbEnd, &VerbEndModel::dataChanged, this, &DataModel::verbEndModelChanged);
 	connect(&m_akkusativ, &AkkusativModel::dataChanged, this, &DataModel::akkusativModelChanged);
 	connect(&m_dativ, &DativModel::dataChanged, this, &DataModel::dativModelChanged);
-
-	connect(&m_wfModel, &WFModel::dataChanged, this, &DataModel::v2SvkModelChanged);
-	connect(&m_otModel, &OTModel::dataChanged, this, &DataModel::v2SvkModelChanged);
-	connect(&m_tPrModel, &TPrModel::dataChanged, this, &DataModel::v2SvkModelChanged);
-	connect(&m_tPeModel, &TPeModel::dataChanged, this, &DataModel::v2SvkModelChanged);
-
+	connect(&m_v2Svk, &V2SvkModel::dataChanged, this, &DataModel::v2SvkModelChanged);
 	connect(&m_passiv, &PassivModel::dataChanged, this, &DataModel::passivModelChanged);
 	connect(&m_genitiv, &GenitivModel::dataChanged, this, &DataModel::genitivModelChanged);
 }

-void DataModel::write(const QString &filename) const
+void DataModel::writeProtoBuf(std::ostream &outStream) const
 {
 	ESGRAF48::DataModel dataModel;

-	m_metaData.write(*dataModel.mutable_metadata());
-
-	m_wfModel.write(*dataModel.mutable_v2svk());
-	m_otModel.write(*dataModel.mutable_v2svk());
-	m_tPrModel.write(*dataModel.mutable_v2svk());
-	m_tPeModel.write(*dataModel.mutable_v2svk());
-
-	m_verbEnd.write(*dataModel.mutable_verbend());
-	m_genus.write(*dataModel.mutable_genus());
+	m_metaData.writeProtoBuf(*dataModel.mutable_metadata());
+	m_v2Svk.writeProtoBuf(*dataModel.mutable_v2svk());
+	m_verbEnd.writeProtoBuf(*dataModel.mutable_verbend());
+	m_genus.writeProtoBuf(*dataModel.mutable_genus());
 	m_akkusativ.write(*dataModel.mutable_akkusativ());
 	m_dativ.write(*dataModel.mutable_dativ());
 	m_plural.write(*dataModel.mutable_plural());
 	m_genitiv.write(*dataModel.mutable_lateskillsgenitiv());
 	m_passiv.write(*dataModel.mutable_lateskillspassiv());

-	QFile outFile(filename);
-	if (!outFile.open(QIODevice::WriteOnly))
-	{
-		throw std::runtime_error("failed to open file");
-	}
-
-	bool success = dataModel.SerializeToFileDescriptor(outFile.handle());
-	if (success == false)
-	{
-		throw std::runtime_error("filed to write file");
-	}
+	dataModel.SerializeToOstream(&outStream);
 }

-void DataModel::read(const QString &filename)
+void DataModel::readProtoBuf(std::istream &inStream)
 {
-	QFile inFile(filename);
-	if (!inFile.open(QIODevice::ReadOnly))
-	{
-		throw std::runtime_error("failed to read file");
-	}
-
 	ESGRAF48::DataModel dataModel;
-	bool success = dataModel.ParseFromFileDescriptor(inFile.handle());
-	if (success == false)
-	{
-		throw std::runtime_error("invalid file format");
-	}
+	dataModel.ParseFromIstream(&inStream);

-	m_metaData.read(dataModel.metadata());
-
-	m_wfModel.read(dataModel.v2svk());
-	m_otModel.read(dataModel.v2svk());
-	m_tPrModel.read(dataModel.v2svk());
-	m_tPeModel.read(dataModel.v2svk());
-
-	m_verbEnd.read(dataModel.verbend());
-	m_genus.read(dataModel.genus());
+	m_metaData.readProtoBuf(dataModel.metadata());
+	m_v2Svk.readProtoBuf(dataModel.v2svk());
+	m_verbEnd.readProtoBuf(dataModel.verbend());
+	m_genus.readProtoBuf(dataModel.genus());
 	m_akkusativ.read(dataModel.akkusativ());
 	m_dativ.read(dataModel.dativ());
 	m_plural.read(dataModel.plural());
@ -100,43 +60,27 @@ void DataModel::read(const QString &filename)
 	m_passiv.read(dataModel.lateskillspassiv());
 }

-void DataModel::printTo(QPrinter &printer) const
+std::string DataModel::toHtml() const
 {
-	QPainter painter;
-	painter.begin(&printer);
+	std::stringstream out;

-	painter.setFont(PrintableModel::h1Font());
-	painter.drawText(0, painter.fontMetrics().lineSpacing(), "ESGRAF 4-8 Auswertungsbogen");
-	painter.translate(0, 3 * painter.fontMetrics().lineSpacing());
+	out << "<html>" << std::endl;
+	out << "<head>" << std::endl;
+	out << "<style>" << std::endl;
+	out << "body {" << std::endl;
+	out << "font-family:sans-serif;" << std::endl;
+	out << "}" << std::endl;
+	out << "</style>" << std::endl;
+	out << "</head>" << std::endl;
+	out << "<body>" << std::endl;
+	out << "<h2>ESGRAF 4-8 Auswertungsbogen</h2>" << std::endl;
+	out << "<p>" << std::endl;
+	out << m_metaData.toHtml();
+	out << "</p>" << std::endl;
+	out << "</body>" << std::endl;
+	out << "</html>" << std::endl;

-	m_metaData.printTo(painter);
-
-	m_wfModel.printTo(painter);
-	m_otModel.printTo(painter);
-	m_tPrModel.printTo(painter);
-	m_tPeModel.printTo(painter);
-	V2SvkModel::printSummary(painter,
-	                         m_wfModel.getV2Points() + m_otModel.getV2Points()
-	                             + m_tPrModel.getV2Points() + m_tPeModel.getV2Points(),
-	                         m_wfModel.getSvkPoints() + m_otModel.getSvkPoints()
-	                             + m_tPrModel.getSvkPoints() + m_tPeModel.getSvkPoints());
-
-	m_verbEnd.printTo(painter);
-	m_genus.printTo(painter);
-
-	printer.newPage();
-	painter.resetTransform();
-
-	m_akkusativ.printTo(painter);
-	m_dativ.printTo(painter);
-	m_plural.printTo(painter);
-
-	m_passiv.printTo(painter);
-	m_genitiv.printTo(painter);
-
-	m_results.printTo(painter);
-
-	painter.end();
+	return out.str();
 }

 void DataModel::pluralModelChanged()
@ -183,10 +127,8 @@ void DataModel::dativModelChanged()

 void DataModel::v2SvkModelChanged()
 {
-	m_results.setV2Result(m_wfModel.getV2Points() + m_otModel.getV2Points()
-	                      + m_tPrModel.getV2Points() + m_tPeModel.getV2Points());
-	m_results.setSvkResult(m_wfModel.getSvkPoints() + m_otModel.getSvkPoints()
-	                       + m_tPrModel.getSvkPoints() + m_tPeModel.getSvkPoints());
+	m_results.setV2Result(m_v2Svk.getV2Points());
+	m_results.setSvkResult(m_v2Svk.getSvkPoints());

 	emit modelChanged();
 }
--- a/source/DataModel.h
+++ b/source/DataModel.h
@ -1,25 +1,18 @@
 #pragma once

-#include "PrintableModel.h"
-
 #include "MetaData/MetaDataModel.h"
 #include "GenusModel.h"
 #include "VerbEndModel.h"
 #include "PluralModel.h"
 #include "AkkusativModel.h"
 #include "DativModel.h"
-
-#include "WFModel.h"
-#include "OTModel.h"
-#include "TPrModel.h"
-#include "TPeModel.h"
-
+#include "V2SvkModel.h"
 #include "PassivModel.h"
 #include "GenitivModel.h"

 #include "ResultModel.h"

-#include <QPrinter>
+#include <QJsonObject>

 class DataModel : public QObject
 {
@ -32,12 +25,7 @@ public:
 	PluralModel m_plural;
 	AkkusativModel m_akkusativ;
 	DativModel m_dativ;
-
-	WFModel m_wfModel;
-	OTModel m_otModel;
-	TPrModel m_tPrModel;
-	TPeModel m_tPeModel;
-
+	V2SvkModel m_v2Svk;
    PassivModel m_passiv;
    GenitivModel m_genitiv;

@ -46,14 +34,35 @@ public:
 public:
 	DataModel(QObject *parent);

-	void write(const QString &filename) const;
-	void read(const QString &filename);
+	std::string toHtml() const;

-	void printTo(QPrinter &printer) const;
+	void writeProtoBuf(std::ostream &outStream) const;
+	void readProtoBuf(std::istream &inStream);

 signals:
 	void modelChanged();

+private:
+	template <class ModelType>
+	void write(
+		const ModelType &model, QJsonObject &target, const char *name) const
+	{
+		QJsonObject jsonObject;
+		model.write(jsonObject);
+		target[name] = jsonObject;
+	}
+
+	template <class ModelType>
+	void read(
+		ModelType &model, const QJsonObject &source, const char *name) const
+	{
+		const auto &jsonObject = source[name];
+		if (jsonObject.isObject())
+		{
+			model.read(jsonObject.toObject());
+		}
+	}
+
 private slots:
 	void pluralModelChanged();
 	void metaDataChanged();
--- a/source/ESGRAF48.cpp
+++ b/source/ESGRAF48.cpp
@ -1,37 +0,0 @@
-#include "mainwindow.h"
-
-#include "version.h"
-
-#include <QApplication>
-#include <QCommandLineParser>
-
-int main(int argc, char **argv)
-{
-	QApplication app(argc, argv);
-	QCoreApplication::setApplicationName(ESGRAF48_DESCRIPTION);
-	QCoreApplication::setApplicationVersion(ESGRAF48_VERSION);
-
-	QCommandLineParser cmdParser;
-	cmdParser.setApplicationDescription(ESGRAF48_DESCRIPTION);
-	cmdParser.addHelpOption();
-	cmdParser.addVersionOption();
-	cmdParser.addPositionalArgument("filename", "file to open");
-
-	cmdParser.process(app);
-
-	const QStringList args = cmdParser.positionalArguments();
-
-	std::unique_ptr<MainWindow> mainWindow;
-	if (args.empty())
-	{
-		mainWindow = std::make_unique<MainWindow>(nullptr);
-	}
-	else
-	{
-		mainWindow = std::make_unique<MainWindow>(nullptr, args.at(0));
-	}
-
-	mainWindow->show();
-
-	return app.exec();
-}
--- a/source/LogoTest.cpp
+++ b/source/LogoTest.cpp
@ -0,0 +1,11 @@
+#include "mainwindow.h"
+#include <QApplication>
+
+int main(int argc, char **argv)
+{
+	QApplication app(argc, argv);
+	MainWindow mainWindow;
+	mainWindow.show();
+
+	return app.exec();
+}
--- a/source/MetaData/CMakeLists.txt
+++ b/source/MetaData/CMakeLists.txt
@ -41,8 +41,6 @@ target_include_directories(${PROJECT_NAME}

 target_link_libraries(${PROJECT_NAME}
 	PRIVATE
-		Age
-		PrintableModel
 		Qt5::Widgets
 		${Protobuf_LIBRARIES}
 )
--- a/source/MetaData/MetaDataModel.cpp
+++ b/source/MetaData/MetaDataModel.cpp
@ -5,7 +5,7 @@
 #include <sstream>

 MetaDataModel::MetaDataModel(QObject *parent)
-    : PrintableModel(parent)
+    : QAbstractTableModel(parent)
 {
 	m_dateOfBirth = QDate::currentDate().addYears(-9);
 	m_dateOfTest = QDate::currentDate();
@ -112,7 +112,7 @@ bool MetaDataModel::setData(const QModelIndex &modelIndex, const QVariant &value
 	return valueChanged;
 }

-void MetaDataModel::read(const ESGRAF48::MetaDataModel &model)
+void MetaDataModel::readProtoBuf(const ESGRAF48::MetaDataModel &model)
 {
 	setData(index(0, 0), QString::fromStdString(model.participantname()));
 	setData(index(0, 1), QString::fromStdString(model.instructorname()));
@ -121,7 +121,7 @@ void MetaDataModel::read(const ESGRAF48::MetaDataModel &model)
 	setData(index(0, 4), QString::fromStdString(model.remarks()));
 }

-void MetaDataModel::write(ESGRAF48::MetaDataModel &model) const
+void MetaDataModel::writeProtoBuf(ESGRAF48::MetaDataModel &model) const
 {
 	model.set_participantname(m_participant.toStdString());
 	model.set_instructorname(m_instructor.toStdString());
@ -130,44 +130,39 @@ void MetaDataModel::write(ESGRAF48::MetaDataModel &model) const
 	model.set_remarks(m_remarks.toStdString());
 }

-void MetaDataModel::printTo(QPainter &painter) const
+std::string MetaDataModel::toHtml() const
 {
-	painter.setFont(tableFont());
+	std::ostringstream out;

-	auto width = painter.device()->width();
-	auto height = 1.5 * painter.fontMetrics().lineSpacing();
+	out << "<table border=\"1\" cellspacing=\"0\" cellpadding=\"2\" frame=\"box\" rules=\"all\">"
+	    << std::endl;
+	out << "<tr>" << std::endl;
+	out << "<td width=\"25%\">Name, Vorname</td>" << std::endl;
+	out << "<td width=\"25%\">" << m_participant.toHtmlEscaped().toStdString() << "</td>"
+	    << std::endl;
+	out << "<td width=\"25%\">Untersucher(in)</td>" << std::endl;
+	out << "<td width=\"25%\">" << m_instructor.toHtmlEscaped().toStdString() << "</td>"
+	    << std::endl;
+	out << "</tr>" << std::endl;
+	out << "<tr>" << std::endl;
+	out << "<td>Geburtsdatum</td>" << std::endl;
+	out << "<td>" << m_dateOfBirth.toString("dd.MM.yyyy").toHtmlEscaped().toStdString() << "</td>"
+	    << std::endl;
+	out << "<td colspan=\"2\">Bemerkungen</td>" << std::endl;
+	out << "</tr>" << std::endl;
+	out << "<tr>" << std::endl;
+	out << "<td>Untersuchungsdatum</td>" << std::endl;
+	out << "<td>" << m_dateOfTest.toString("dd.MM.yyyy").toHtmlEscaped().toStdString() << "</td>"
+	    << std::endl;
+	out << "<td colspan=\"2\" rowspan=\"2\">"
+	    << m_remarks.trimmed().toHtmlEscaped().replace("\n", "<br>").toStdString() << "</td>"
+	    << std::endl;
+	out << "</tr>" << std::endl;
+	out << "<tr>" << std::endl;
+	out << "<td>Alter am Testtag</td>" << std::endl;
+	out << "<td>" << getAge().toString() << "</td>" << std::endl;
+	out << "</tr>" << std::endl;
+	out << "</table>" << std::endl;

-	auto hasRemarks = !m_remarks.trimmed().isEmpty();
-
-	painter.drawText(0, 0, "Name, Vorname");
-	painter.drawText(0.25 * width, 0, m_participant);
-	painter.drawText(0.5 * width, 0, "Untersucher(in)");
-	painter.drawText(0.75 * width, 0, m_instructor);
-
-	painter.translate(0, height);
-
-	painter.drawText(0, 0, "Geburtsdatum");
-	painter.drawText(0.25 * width, 0, m_dateOfBirth.toString("dd.MM.yyyy"));
-	if (hasRemarks)
-	{
-		painter.drawText(0.5 * width, 0, "Bemerkungen:");
-		painter.drawText(QRect(0.5 * width, 0.5 * height, width, 2 * height), m_remarks);
-	}
-
-	painter.translate(0, height);
-
-	painter.drawText(0, 0, "Untersuchungsdatum");
-	painter.drawText(0.25 * width, 0, m_dateOfTest.toString("dd.MM.yyyy"));
-
-	painter.translate(0, height);
-
-	painter.drawText(0, 0, "Alter am Testtag");
-	painter.drawText(0.25 * width, 0, getAge().toString().c_str());
-
-	painter.translate(0, 2 * height);
-}
-
-Age MetaDataModel::getAge() const
-{
-	return {m_dateOfBirth, m_dateOfTest};
+	return out.str();
 }
--- a/source/MetaData/MetaDataModel.h
+++ b/source/MetaData/MetaDataModel.h
@ -1,16 +1,15 @@
 #pragma once

-#include "PrintableModel.h"
-
-#include "Age.h"
+#include "../Age.h"

 #include "MetaDataModel.pb.h"

 #include <QAbstractTableModel>
 #include <QString>
 #include <QDate>
+#include <QJsonObject>

-class MetaDataModel : public PrintableModel
+class MetaDataModel : public QAbstractTableModel
 {
 	Q_OBJECT

@ -25,14 +24,19 @@ public:
 	MetaDataModel(QObject *parent);
 	int rowCount(const QModelIndex &parent = QModelIndex()) const override;
 	int columnCount(const QModelIndex &parent = QModelIndex()) const override;
-	QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+	QVariant data(
+		const QModelIndex &index, int role = Qt::DisplayRole) const override;
 	Qt::ItemFlags flags(const QModelIndex &index) const override;
-	bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;
+	bool setData(const QModelIndex &index, const QVariant &value,
+		int role = Qt::EditRole) override;

-	void read(const ESGRAF48::MetaDataModel &model);
-	void write(ESGRAF48::MetaDataModel &model) const;
+	void readProtoBuf(const ESGRAF48::MetaDataModel &model);
+	void writeProtoBuf(ESGRAF48::MetaDataModel &model) const;

-	void printTo(QPainter &painter) const override;
+	std::string toHtml() const;

-	Age getAge() const;
+	Age getAge() const
+	{
+		return { m_dateOfBirth, m_dateOfTest };
+	}
 };
--- a/source/PrintableModel/CMakeLists.txt
+++ b/source/PrintableModel/CMakeLists.txt
@ -1,27 +0,0 @@
-cmake_minimum_required(VERSION 3.6)
-
-project(PrintableModel LANGUAGES CXX)
-
-find_package(Qt5Core REQUIRED)
-find_package(Qt5Widgets REQUIRED)
-
-add_library(${PROJECT_NAME}
-	PrintableModel.cpp
-)
-
-set_target_properties(${PROJECT_NAME}
-	PROPERTIES CXX_STANDARD 14
-)
-
-target_include_directories(${PROJECT_NAME}
-    PUBLIC
-        ${CMAKE_CURRENT_SOURCE_DIR}
-)
-
-target_link_libraries(${PROJECT_NAME}
-	PUBLIC
-		CheckableTestModel
-	PRIVATE
-		Qt5::Core
-		Qt5::Widgets
-)
--- a/source/PrintableModel/PrintableModel.cpp
+++ b/source/PrintableModel/PrintableModel.cpp
@ -1,184 +0,0 @@
-#include "PrintableModel.h"
-
-#include <regex>
-
-PrintableModel::PrintableModel(QObject *parent)
-    : CheckableTestModel(parent)
-{
-}
-
-void PrintableModel::printTo(QPainter &painter) const
-{
-	printHeader(painter);
-	printTests(painter);
-	printSummary(painter);
-}
-
-QFont PrintableModel::h1Font()
-{
-	return QFont("Helvetica", 16);
-}
-
-QFont PrintableModel::h2Font()
-{
-	return QFont("Helvetica", 10);
-}
-
-QFont PrintableModel::tableFont()
-{
-	return QFont("Helvetica", 8);
-}
-
-QPen PrintableModel::tablePen()
-{
-	return QPen(Qt::black, 1, Qt::SolidLine);
-}
-
-QPen PrintableModel::resultPen()
-{
-	return QPen(Qt::black, 2, Qt::SolidLine);
-}
-
-double PrintableModel::headerWidthFactor()
-{
-	return 0.17;
-}
-
-double PrintableModel::cellWidthFactor()
-{
-	return headerWidthFactor() / 2;
-}
-
-void PrintableModel::drawTextSquare(QPainter &painter, const QRectF &cell, const QString &text)
-{
-	auto prevPen = painter.pen();
-	painter.setPen(tablePen());
-
-	painter.drawText(cell, Qt::AlignCenter, text);
-
-	painter.drawLine(cell.topLeft(), cell.topRight());
-	painter.drawLine(cell.topRight(), cell.bottomRight());
-	painter.drawLine(cell.bottomRight(), cell.bottomLeft());
-	painter.drawLine(cell.bottomLeft(), cell.topLeft());
-
-	painter.setPen(prevPen);
-}
-
-void PrintableModel::drawNumberSquare(QPainter &painter, double x, double y, int number)
-{
-	QRectF cell = {x, y, 0.03 * painter.device()->width(),
-	               1.5 * painter.fontMetrics().lineSpacing()};
-
-	painter.drawText(cell, Qt::AlignCenter, QString::number(number));
-
-	painter.drawLine(cell.topLeft(), cell.topRight());
-	painter.drawLine(cell.topRight(), cell.bottomRight());
-	painter.drawLine(cell.bottomRight(), cell.bottomLeft());
-	painter.drawLine(cell.bottomLeft(), cell.topLeft());
-}
-
-void PrintableModel::PrintableModel::drawCheckSquare(QPainter &painter, const QRectF &cell,
-                                                     bool checked)
-{
-    drawTextSquare(painter, cell, checked ? u8"\u2612" : u8"\u2610");
-}
-
-void PrintableModel::drawResultSquare(QPainter &painter, double y, bool rightCell,
-                                      unsigned int value)
-{
-	double pageWidth = painter.device()->width();
-	double cellWidth = 0.03 * pageWidth;
-	double cellHeight = 1.5 * painter.fontMetrics().lineSpacing();
-	double x = pageWidth - cellWidth - (rightCell ? 0 : 0.04 * pageWidth);
-
-	drawTextSquare(painter, {x, y, cellWidth, cellHeight}, QString::number(value));
-}
-
-void PrintableModel::drawGreySquare(QPainter &painter, const QRectF &cell)
-{
-	auto prevBrush = painter.brush();
-	auto prevPen = painter.pen();
-
-	painter.setBrush(QBrush(QColor(224, 224, 224)));
-	painter.setPen(QPen(Qt::NoPen));
-	QPointF points[4] = {cell.topLeft(), cell.topRight(), cell.bottomRight(), cell.bottomLeft()};
-	painter.drawPolygon(points, 4);
-
-	painter.setPen(tablePen());
-	painter.drawLine(cell.topLeft(), cell.topRight());
-	painter.drawLine(cell.topRight(), cell.bottomRight());
-	painter.drawLine(cell.bottomRight(), cell.bottomLeft());
-	painter.drawLine(cell.bottomLeft(), cell.topLeft());
-
-	painter.setBrush(prevBrush);
-	painter.setPen(prevPen);
-}
-
-void PrintableModel::drawHeader2(QPainter &painter, const QString &text)
-{
-	painter.setFont(h2Font());
-	painter.drawText(0, 0, text);
-	painter.translate(0, 0.5 * painter.fontMetrics().lineSpacing());
-}
-
-void PrintableModel::printHeader(QPainter &painter) const
-{
-	auto title = getTitle();
-	if (!title.isEmpty())
-	{
-		drawHeader2(painter, getTitle());
-	}
-}
-
-void PrintableModel::printTests(QPainter &painter) const
-{
-	painter.setFont(tableFont());
-	painter.setPen(tablePen());
-
-	auto width = painter.device()->width();
-	auto height = 1.5 * painter.fontMetrics().lineSpacing();
-
-	double headerWidth = headerWidthFactor() * width;
-	double cellWidth = cellWidthFactor() * width;
-	double rowHeight = height;
-
-	double x = 0;
-	double y = 0;
-	for (const auto &test : m_tests)
-	{
-		QString testName = QString::fromStdString(
-		    std::regex_replace(test.name().toStdString(), std::regex("\\s"), "\n"));
-
-		drawTextSquare(painter, {0, y, headerWidth, 2 * rowHeight}, testName);
-		x = headerWidth;
-
-		for (const auto &item : test.items())
-		{
-			drawTextSquare(painter, {x, y, cellWidth, rowHeight}, item.getText().c_str());
-			drawCheckSquare(painter, {x, y + rowHeight, cellWidth, rowHeight}, item.isChecked());
-
-			x += cellWidth;
-		}
-		y += rowHeight;
-
-		drawResultSquare(painter, y, true, test.getPoints());
-		y += rowHeight;
-	}
-
-	painter.translate(0, y + rowHeight);
-}
-
-void PrintableModel::printSummary(QPainter &painter) const
-{
-	painter.setFont(tableFont());
-
-	auto width = painter.device()->width();
-	auto height = 1.5 * painter.fontMetrics().lineSpacing();
-
-	painter.drawText(0, 0, 0.95 * width, height, Qt::AlignRight | Qt::AlignVCenter,
-	                 "Rohwertpunkte Total:");
-	painter.setPen(resultPen());
-	drawNumberSquare(painter, 0.97 * width, 0, getPoints());
-
-	painter.translate(0, 3 * height);
-}
--- a/source/PrintableModel/PrintableModel.h
+++ b/source/PrintableModel/PrintableModel.h
@ -1,42 +0,0 @@
-#pragma once
-
-#include "CheckableTestModel.h"
-
-#include <QPainter>
-#include <QFont>
-#include <QPen>
-#include <QRect>
-#include <QString>
-
-class PrintableModel : public CheckableTestModel
-{
-	Q_OBJECT
-
-public:
-	PrintableModel(QObject *parent);
-
-	virtual void printTo(QPainter &painter) const;
-
-	static QFont h1Font();
-	static QFont h2Font();
-	static QFont tableFont();
-
-	static QPen tablePen();
-	static QPen resultPen();
-
-	static double headerWidthFactor();
-	static double cellWidthFactor();
-
-	static void drawTextSquare(QPainter &painter, const QRectF &cell, const QString &text);
-	static void drawNumberSquare(QPainter &painter, double x, double y, int number);
-	static void drawCheckSquare(QPainter &painter, const QRectF &cell, bool checked);
-	static void drawResultSquare(QPainter &painter, double y, bool rightCell, unsigned int value);
-	static void drawGreySquare(QPainter &painter, const QRectF &cell);
-
-	static void drawHeader2(QPainter &painter, const QString &text);
-
-protected:
-	virtual void printHeader(QPainter &painter) const;
-	virtual void printTests(QPainter &painter) const;
-	virtual void printSummary(QPainter &painter) const;
-};
--- a/source/ResultWidget/CMakeLists.txt
+++ b/source/ResultWidget/CMakeLists.txt
@ -30,7 +30,5 @@ target_include_directories(${PROJECT_NAME}

 target_link_libraries(${PROJECT_NAME}
 	PRIVATE
-		PrintableModel
-		Age
 		Qt5::Widgets
 )
--- a/source/ResultWidget/PRMap.cpp
+++ b/source/ResultWidget/PRMap.cpp
@ -20,7 +20,7 @@ unsigned int PRMap::lookup(const Age &age, const unsigned int &points)

 		if (m_ages.back() < age)
 		{
-			return m_ages.size() - 2;
+			return m_ages.size() - 1;
 		}

 		for (size_t index = 1; index < m_ages.size(); ++index)
--- a/source/ResultWidget/PRMap.h
+++ b/source/ResultWidget/PRMap.h
@ -1,6 +1,6 @@
 #pragma once

-#include "Age.h"
+#include "../Age.h"
 #include <vector>

 class PRMap
--- a/source/ResultWidget/ResultModel.cpp
+++ b/source/ResultWidget/ResultModel.cpp
@ -10,15 +10,13 @@
 #include "PassivPR.h"
 #include "GenitivPR.h"

-#include "PrintableModel.h"
-
 #include <QDebug>

 ResultModel::ResultModel(QObject *parent)
-    : QAbstractTableModel(parent)
+	: QAbstractTableModel(parent)
 {
-	m_results = {{"V2", "SVK", "VE", "Passiv", "Genus", "Akkusativ", "Dativ", "Genitiv", "Plural"}};
-	m_results = {{"V2", "SVK", "VE", "Genus", "Akkusativ", "Dativ", "Plural", "Passiv", "Genitiv"}};
+	m_results = { { "V2", "SVK", "VE", "Passiv", "Genus", "Akkusativ", "Dativ",
+		"Genitiv", "Plural" } };
 }

 int ResultModel::rowCount(const QModelIndex &parent) const
@ -83,7 +81,8 @@ QVariant ResultModel::data(const QModelIndex &index, int role) const
 	return {};
 }

-QVariant ResultModel::headerData(int section, Qt::Orientation orientation, int role) const
+QVariant ResultModel::headerData(
+	int section, Qt::Orientation orientation, int role) const
 {
 	if (role != Qt::DisplayRole)
 	{
@ -124,21 +123,21 @@ void ResultModel::setAge(const Age &age)

 void ResultModel::setPluralResult(unsigned int points)
 {
-	if (m_results[6].points() != points)
+	if (m_results[8].points() != points)
 	{
-		m_results[6].setPoints(points);
-		m_results[6].setPR(PluralPR().lookup(m_age, points));
-		emit dataChanged(index(0, 6), index(4, 6));
+		m_results[8].setPoints(points);
+		m_results[8].setPR(PluralPR().lookup(m_age, points));
+		emit dataChanged(index(0, 8), index(4, 8));
 	}
 }

 void ResultModel::setGenusResult(unsigned int points)
 {
-	if (m_results[3].points() != points)
+	if (m_results[4].points() != points)
 	{
-		m_results[3].setPoints(points);
-		m_results[3].setPR(GenusPR().lookup(m_age, points));
-		emit dataChanged(index(0, 3), index(4, 3));
+		m_results[4].setPoints(points);
+		m_results[4].setPR(GenusPR().lookup(m_age, points));
+		emit dataChanged(index(0, 4), index(4, 4));
 	}
 }

@ -154,21 +153,21 @@ void ResultModel::setVerbEndResult(unsigned int points)

 void ResultModel::setAkkusativResult(unsigned int points)
 {
-	if (m_results[4].points() != points)
+	if (m_results[5].points() != points)
 	{
-		m_results[4].setPoints(points);
-		m_results[4].setPR(AkkusativPR().lookup(m_age, points));
-		emit dataChanged(index(0, 4), index(4, 4));
+		m_results[5].setPoints(points);
+		m_results[5].setPR(AkkusativPR().lookup(m_age, points));
+		emit dataChanged(index(0, 5), index(4, 5));
 	}
 }

 void ResultModel::setDativResult(unsigned int points)
 {
-	if (m_results[5].points() != points)
+	if (m_results[6].points() != points)
 	{
-		m_results[5].setPoints(points);
-		m_results[5].setPR(DativPR().lookup(m_age, points));
-		emit dataChanged(index(0, 5), index(4, 5));
+		m_results[6].setPoints(points);
+		m_results[6].setPR(DativPR().lookup(m_age, points));
+		emit dataChanged(index(0, 6), index(4, 6));
 	}
 }
 	
@ -194,66 +193,20 @@ void ResultModel::setSvkResult(unsigned int points)

 void ResultModel::setPassivResult(unsigned int points)
 {
-	if (m_results[7].points() != points)
-	{
-		m_results[7].setPoints(points);
-		m_results[7].setPR(PassivPR().lookup(m_age, points));
-		emit dataChanged(index(0, 7), index(4, 7));
-	}
+    if (m_results[3].points() != points)
+    {
+        m_results[3].setPoints(points);
+        m_results[3].setPR(PassivPR().lookup(m_age, points));
+        emit dataChanged(index(0, 3), index(4, 3));
+    }
 }

 void ResultModel::setGenitivResult(unsigned int points)
 {
-	if (m_results[8].points() != points)
-	{
-		m_results[8].setPoints(points);
-		m_results[8].setPR(GenitivPR().lookup(m_age, points));
-		emit dataChanged(index(0, 8), index(4, 8));
-	}
-}
-
-void ResultModel::printTo(QPainter &painter) const
-{
-	PrintableModel::drawHeader2(painter, "Prozentränge (PR)");
-
-	painter.setFont(PrintableModel::tableFont());
-	painter.setPen(PrintableModel::tablePen());
-
-	auto width = painter.device()->width();
-	auto height = 1.5 * painter.fontMetrics().lineSpacing();
-
-	double cellWidth = width / (m_results.size() + 1);
-	double rowHeight = 2 * height;
-
-	double x = 0;
-	double y = 0;
-
-	PrintableModel::drawTextSquare(painter, {x, y + 0 * rowHeight, cellWidth, rowHeight}, "");
-	PrintableModel::drawTextSquare(painter, {x, y + 1 * rowHeight, cellWidth, rowHeight},
-                                   u8"\u2265 PR 84");
-	PrintableModel::drawTextSquare(painter, {x, y + 2 * rowHeight, cellWidth, rowHeight},
-	                               "< PR 84");
-
-	PrintableModel::drawGreySquare(painter, {x, y + 3 * rowHeight, cellWidth, rowHeight});
-	PrintableModel::drawTextSquare(painter, {x, y + 3 * rowHeight, cellWidth, rowHeight},
-                                   u8"\u2264 PR 16");
-
-	x += cellWidth;
-	for (const auto &result : m_results)
-	{
-		PrintableModel::drawTextSquare(painter, {x, y + 0 * rowHeight, cellWidth, rowHeight},
-		                               result.name());
-		const auto pr = result.pr();
-
-		PrintableModel::drawTextSquare(painter, {x, y + 1 * rowHeight, cellWidth, rowHeight},
-		                               pr >= 84 ? QString::number(pr) : "-");
-		PrintableModel::drawTextSquare(painter, {x, y + 2 * rowHeight, cellWidth, rowHeight},
-		                               pr < 84 && pr > 16 ? QString::number(pr) : "-");
-
-		PrintableModel::drawGreySquare(painter, {x, y + 3 * rowHeight, cellWidth, rowHeight});
-		PrintableModel::drawTextSquare(painter, {x, y + 3 * rowHeight, cellWidth, rowHeight},
-		                               pr <= 16 ? QString::number(pr) : "-");
-
-		x += cellWidth;
-	}
+    if (m_results[7].points() != points)
+    {
+        m_results[7].setPoints(points);
+        m_results[7].setPR(GenitivPR().lookup(m_age, points));
+        emit dataChanged(index(0, 7), index(4, 7));
+    }
 }
--- a/source/ResultWidget/ResultModel.h
+++ b/source/ResultWidget/ResultModel.h
@ -1,9 +1,7 @@
 #pragma once

-#include "Age.h"
-
+#include "../Age.h"
 #include <QAbstractTableModel>
-#include <QPainter>

 class TestResult
 {
@ -74,6 +72,4 @@ public:
 	void setSvkResult(unsigned int points);
    void setPassivResult(unsigned int points);
    void setGenitivResult(unsigned int points);
-
-	void printTo(QPainter &painter) const;
 };
--- a/source/SubTests/AkkusativDativ/AkkusativModel.cpp
+++ b/source/SubTests/AkkusativDativ/AkkusativModel.cpp
@ -1,7 +1,7 @@
 #include "AkkusativModel.h"

 AkkusativModel::AkkusativModel(QObject *parent)
-    : PrintableModel(parent)
+    : CheckableTestModel(parent)
 {
 	m_tests = {{"Akkusativ Nominalphrase",
 	            {"Tiger", "Katze", "Affe", "Gans", "Bär", "Pferd", "Hund", "Elefant"}},
@ -105,8 +105,3 @@ void AkkusativModel::write(ESGRAF48::AkkusativModel &model) const
 		futterModel->set_zucker(testItems[7].isChecked());
 	}
 }
-	
-void AkkusativModel::printHeader(QPainter &painter) const
-{
-	drawHeader2(painter, "Subtest 4: Akkusativ und Dativ");
-}
--- a/source/SubTests/AkkusativDativ/AkkusativModel.h
+++ b/source/SubTests/AkkusativDativ/AkkusativModel.h
@ -1,9 +1,9 @@
 #pragma once

-#include "PrintableModel.h"
+#include "CheckableTestModel.h"
 #include "AkkusativModel.pb.h"

-class AkkusativModel : public PrintableModel
+class AkkusativModel : public CheckableTestModel
 {
 	Q_OBJECT

@ -12,7 +12,4 @@ public:

 	void read(const ESGRAF48::AkkusativModel &model);
 	void write(ESGRAF48::AkkusativModel &model) const;
-
-protected:
-	void printHeader(QPainter &painter) const override;
 };
--- a/source/SubTests/AkkusativDativ/CMakeLists.txt
+++ b/source/SubTests/AkkusativDativ/CMakeLists.txt
@ -43,7 +43,9 @@ target_include_directories(${PROJECT_NAME}

 target_link_libraries(${PROJECT_NAME}
 	PRIVATE
-		PrintableModel
+		CheckableItem
+		CheckableTest
+		CheckableTestModel
 		Qt5::Widgets
 		${Protobuf_LIBRARIES}
 )
--- a/source/SubTests/AkkusativDativ/DativModel.cpp
+++ b/source/SubTests/AkkusativDativ/DativModel.cpp
@ -1,14 +1,14 @@
 #include "DativModel.h"

 DativModel::DativModel(QObject *parent)
-    : PrintableModel(parent)
+    : CheckableTestModel(parent)
 {
 	m_tests = {{"Dativ Nominalphrase",
-	            {"Affe", "Gans", "Tiger", "Hund", "Elefant", "Pferd", "Bär", "Katze"}},
+	            {"Tiger", "Katze", "Affe", "Gans", "Bär", "Pferd", "Hund", "Elefant"}},
 	           {"Präpositionalphrase (Verstecke)",
 	            {"Vorhang", "Kiste", "Holz", "Kiste", "Baum", "Vorhang", "Holz", "Baum"}},
 	           {"Nominalphrase (Tiere)",
-	            {"Gans", "Tiger", "Hund", "Affe", "Elefant", "Pferd", "Bär", "Katze"}}};
+	            {"Salat", "Fleisch", "Knochen", "Banane", "Apfel", "Karotte", "Honig", "Zucker"}}};
 }

 void DativModel::read(const ESGRAF48::DativModel &model)
@ -17,14 +17,14 @@ void DativModel::read(const ESGRAF48::DativModel &model)
 	{
 		auto &testItems = m_tests.at(0).items();

-		testItems[0].setState(tiereModel.affe());
-		testItems[1].setState(tiereModel.gans());
-		testItems[2].setState(tiereModel.tiger());
-		testItems[3].setState(tiereModel.hund());
-		testItems[4].setState(tiereModel.elefant());
+		testItems[0].setState(tiereModel.tiger());
+		testItems[1].setState(tiereModel.katze());
+		testItems[2].setState(tiereModel.affe());
+		testItems[3].setState(tiereModel.gans());
+		testItems[4].setState(tiereModel.baer());
 		testItems[5].setState(tiereModel.pferd());
-		testItems[6].setState(tiereModel.baer());
-		testItems[7].setState(tiereModel.katze());
+		testItems[6].setState(tiereModel.hund());
+		testItems[7].setState(tiereModel.elefant());
 	}

 	const auto &versteckeModel = model.verstecke();
@ -41,18 +41,18 @@ void DativModel::read(const ESGRAF48::DativModel &model)
 		testItems[7].setState(versteckeModel.baum2());
 	}

-	const auto &nomTiereModel = model.nomtiere();
+	const auto &futterModel = model.futter();
 	{
 		auto &testItems = m_tests.at(2).items();

-		testItems[0].setState(nomTiereModel.gans());
-		testItems[1].setState(nomTiereModel.tiger());
-		testItems[2].setState(nomTiereModel.hund());
-		testItems[3].setState(nomTiereModel.affe());
-		testItems[4].setState(nomTiereModel.elefant());
-		testItems[5].setState(nomTiereModel.pferd());
-		testItems[6].setState(nomTiereModel.baer());
-		testItems[7].setState(nomTiereModel.katze());
+		testItems[0].setState(futterModel.salat());
+		testItems[1].setState(futterModel.fleisch());
+		testItems[2].setState(futterModel.knochen());
+		testItems[3].setState(futterModel.banane());
+		testItems[4].setState(futterModel.apfel());
+		testItems[5].setState(futterModel.karotte());
+		testItems[6].setState(futterModel.honig());
+		testItems[7].setState(futterModel.zucker());
 	}

 	emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
@ -65,14 +65,14 @@ void DativModel::write(ESGRAF48::DativModel &model) const
 	{
 		const auto &testItems = m_tests.at(0).items();

-		tiereModel->set_affe(testItems[0].isChecked());
-		tiereModel->set_gans(testItems[1].isChecked());
-		tiereModel->set_tiger(testItems[2].isChecked());
-		tiereModel->set_hund(testItems[3].isChecked());
-		tiereModel->set_elefant(testItems[4].isChecked());
+		tiereModel->set_tiger(testItems[0].isChecked());
+		tiereModel->set_katze(testItems[1].isChecked());
+		tiereModel->set_affe(testItems[2].isChecked());
+		tiereModel->set_gans(testItems[3].isChecked());
+		tiereModel->set_baer(testItems[4].isChecked());
 		tiereModel->set_pferd(testItems[5].isChecked());
-		tiereModel->set_baer(testItems[6].isChecked());
-		tiereModel->set_katze(testItems[7].isChecked());
+		tiereModel->set_hund(testItems[6].isChecked());
+		tiereModel->set_elefant(testItems[7].isChecked());
 	}

 	auto *versteckeModel = model.mutable_verstecke();
@ -90,23 +90,18 @@ void DativModel::write(ESGRAF48::DativModel &model) const
 		versteckeModel->set_baum2(testItems[7].isChecked());
 	}

-	auto *nomTiereModel = model.mutable_nomtiere();
-	if (nomTiereModel != nullptr)
+	auto *futterModel = model.mutable_futter();
+	if (futterModel != nullptr)
 	{
 		const auto &testItems = m_tests.at(2).items();

-		nomTiereModel->set_gans(testItems[0].isChecked());
-		nomTiereModel->set_tiger(testItems[1].isChecked());
-		nomTiereModel->set_hund(testItems[2].isChecked());
-		nomTiereModel->set_affe(testItems[3].isChecked());
-		nomTiereModel->set_elefant(testItems[4].isChecked());
-		nomTiereModel->set_pferd(testItems[5].isChecked());
-		nomTiereModel->set_baer(testItems[6].isChecked());
-		nomTiereModel->set_katze(testItems[7].isChecked());
+		futterModel->set_salat(testItems[0].isChecked());
+		futterModel->set_fleisch(testItems[1].isChecked());
+		futterModel->set_knochen(testItems[2].isChecked());
+		futterModel->set_banane(testItems[3].isChecked());
+		futterModel->set_apfel(testItems[4].isChecked());
+		futterModel->set_karotte(testItems[5].isChecked());
+		futterModel->set_honig(testItems[6].isChecked());
+		futterModel->set_zucker(testItems[7].isChecked());
 	}
 }
-	
-void DativModel::printHeader(QPainter &painter) const
-{
-	painter.translate(0, -1.5 * painter.fontMetrics().lineSpacing());
-}
--- a/source/SubTests/AkkusativDativ/DativModel.h
+++ b/source/SubTests/AkkusativDativ/DativModel.h
@ -1,9 +1,9 @@
 #pragma once

-#include "PrintableModel.h"
+#include "CheckableTestModel.h"
 #include "DativModel.pb.h"

-class DativModel : public PrintableModel
+class DativModel : public CheckableTestModel
 {
 	Q_OBJECT

@ -12,7 +12,4 @@ public:

 	void read(const ESGRAF48::DativModel &model);
 	void write(ESGRAF48::DativModel &model) const;
-
-protected:
-	void printHeader(QPainter &painter) const override;
 };
--- a/source/SubTests/Genus/CMakeLists.txt
+++ b/source/SubTests/Genus/CMakeLists.txt
@ -39,7 +39,9 @@ target_include_directories(${PROJECT_NAME}

 target_link_libraries(${PROJECT_NAME}
 	PRIVATE
-		PrintableModel
+		CheckableItem
+		CheckableTest
+		CheckableTestModel
 		Qt5::Widgets
 		${Protobuf_LIBRARIES}
 )
--- a/source/SubTests/Genus/GenusModel.cpp
+++ b/source/SubTests/Genus/GenusModel.cpp
@ -1,17 +1,15 @@
 #include "GenusModel.h"

 GenusModel::GenusModel(QObject *parent)
-    : PrintableModel(parent)
+    : CheckableTestModel(parent)
 {
-	m_title = "Subtest 3: Genus";
-
 	m_tests = {{"Tiere", {"Tiger", "Bär", "Katze", "Pferd", "Gans", "Elefant", "Affe", "Hund"}},
 	           {"Futter",
 	            {"Salat", "Fleisch", "Knochen", "Banane", "Apfel", "Karotte", "Honig", "Zucker"}},
 	           {"Zirkus", {"Kiste", "Holz", "Vorhang", "Baum"}}};
 }

-void GenusModel::read(const ESGRAF48::GenusModel &model)
+void GenusModel::readProtoBuf(const ESGRAF48::GenusModel &model)
 {
 	const auto &tiereModel = model.tiere();
 	{
@ -54,7 +52,7 @@ void GenusModel::read(const ESGRAF48::GenusModel &model)
 	emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
 }

-void GenusModel::write(ESGRAF48::GenusModel &model) const
+void GenusModel::writeProtoBuf(ESGRAF48::GenusModel &model) const
 {
 	auto *tiereModel = model.mutable_tiere();
 	if (tiereModel != nullptr)
--- a/source/SubTests/Genus/GenusModel.h
+++ b/source/SubTests/Genus/GenusModel.h
@ -1,15 +1,15 @@
 #pragma once

-#include "PrintableModel.h"
+#include "CheckableTestModel.h"
 #include "GenusModel.pb.h"

-class GenusModel : public PrintableModel
+class GenusModel : public CheckableTestModel
 {
 	Q_OBJECT

 public:
 	GenusModel(QObject *parent);

-	void read(const ESGRAF48::GenusModel &model);
-	void write(ESGRAF48::GenusModel &model) const;
+	void readProtoBuf(const ESGRAF48::GenusModel &model);
+	void writeProtoBuf(ESGRAF48::GenusModel &model) const;
 };
--- a/source/SubTests/LateSkills/CMakeLists.txt
+++ b/source/SubTests/LateSkills/CMakeLists.txt
@ -22,7 +22,6 @@ protobuf_generate_cpp(LateSkills_PROTO_SRCS LateSkills_PROTO_HDRS

 add_library(${PROJECT_NAME}
 	LateSkillsWidget.cpp
-	LateSkillsModel.cpp
 	PassivModel.cpp
 	GenitivModel.cpp
 	${UI_HEADERS}
@ -44,7 +43,9 @@ target_include_directories(${PROJECT_NAME}

 target_link_libraries(${PROJECT_NAME}
 	PRIVATE
-	PrintableModel
+	CheckableItem
+	CheckableTest
+	CheckableTestModel
 	Qt5::Widgets
 	${Protobuf_LIBRARIES}
 )
--- a/source/SubTests/LateSkills/GenitivModel.cpp
+++ b/source/SubTests/LateSkills/GenitivModel.cpp
@ -1,7 +1,7 @@
 #include "GenitivModel.h"

 GenitivModel::GenitivModel(QObject *parent)
-    : LateSkillsModel(parent)
+    : CheckableTestModel(parent)
 {
 	m_tests = {
 	    {"Genitiv Präpositionen",
@ -107,8 +107,3 @@ void GenitivModel::write(ESGRAF48::LateSkillsGenitivModel &model) const
 		attributierungModel->set_guertel2(testItems[9].isChecked());
 	}
 }
-	
-void GenitivModel::printHeader(QPainter &painter) const
-{
-	painter.translate(0, -1.5 * painter.fontMetrics().lineSpacing());
-}
--- a/source/SubTests/LateSkills/GenitivModel.h
+++ b/source/SubTests/LateSkills/GenitivModel.h
@ -1,9 +1,9 @@
 #pragma once

-#include "LateSkillsModel.h"
+#include "CheckableTestModel.h"
 #include "LateSkillsGenitivModel.pb.h"

-class GenitivModel : public LateSkillsModel
+class GenitivModel : public CheckableTestModel
 {
 	Q_OBJECT

@ -14,7 +14,4 @@ public:

 	void read(const ESGRAF48::LateSkillsGenitivModel &model);
 	void write(ESGRAF48::LateSkillsGenitivModel &model) const;
-
-protected:
-	void printHeader(QPainter &painter) const override;
 };
--- a/source/SubTests/LateSkills/LateSkillsModel.cpp
+++ b/source/SubTests/LateSkills/LateSkillsModel.cpp
@ -1,64 +0,0 @@
-#include "LateSkillsModel.h"
-
-#include <regex>
-
-LateSkillsModel::LateSkillsModel(QObject *parent)
-    : PrintableModel(parent)
-{
-}
-
-void LateSkillsModel::printTests(QPainter &painter) const
-{
-	painter.setFont(tableFont());
-	painter.setPen(tablePen());
-
-	auto width = painter.device()->width();
-	auto height = 1.5 * painter.fontMetrics().lineSpacing();
-
-	double headerWidth = headerWidthFactor() * width;
-	double cellHeaderWidth = cellWidthFactor() * width;
-	double cellWidth = 0.5 * cellHeaderWidth;
-	double rowHeight = height;
-
-	double x = 0;
-	double y = 0;
-	for (const auto &test : m_tests)
-	{
-		QString testName = QString::fromStdString(
-		    std::regex_replace(test.name().toStdString(), std::regex("\\s"), "\n"));
-
-		drawTextSquare(painter, {0, y, headerWidth, 3 * rowHeight}, testName);
-
-		const auto &items = test.items();
-
-		x = headerWidth;
-		for (unsigned int i = 0; i < items.size(); i += 2)
-		{
-			const auto &item = test.items().at(i);
-			QString itemText = QString::fromStdString(item.getText()).split(" ").at(0);
-
-			drawTextSquare(painter, {x, y, cellHeaderWidth, rowHeight}, itemText);
-
-			x += cellHeaderWidth;
-		}
-		y += rowHeight;
-
-		x = headerWidth;
-		for (const auto &item : items)
-		{
-			drawTextSquare(painter, {x, y, cellWidth, rowHeight}, QString::number(item.value()));
-			drawCheckSquare(painter, {x, y + rowHeight, cellWidth, rowHeight}, item.isChecked());
-
-			x += cellWidth;
-		}
-
-		if (m_tests.size() > 1)
-		{
-			drawResultSquare(painter, y + rowHeight, true, test.getPoints());
-		}
-
-		y += 2 * rowHeight;
-	}
-
-	painter.translate(0, y + rowHeight);
-}
--- a/source/SubTests/LateSkills/LateSkillsModel.h
+++ b/source/SubTests/LateSkills/LateSkillsModel.h
@ -1,15 +0,0 @@
-#pragma once
-
-#include "PrintableModel.h"
-#include "LateSkillsPassivModel.pb.h"
-
-class LateSkillsModel : public PrintableModel
-{
-	Q_OBJECT
-
-public:
-	LateSkillsModel(QObject *parent);
-
-protected:
-	void printTests(QPainter &painter) const override;
-};
--- a/source/SubTests/LateSkills/PassivModel.cpp
+++ b/source/SubTests/LateSkills/PassivModel.cpp
@ -1,7 +1,7 @@
 #include "PassivModel.h"

 PassivModel::PassivModel(QObject *parent)
-    : LateSkillsModel(parent)
+    : CheckableTestModel(parent)
 {
 	m_tests = {{"Passiv",
 	            {"Elefant (1)", "Elefant (2)", "Pferde (1)", "Pferde (2)", "Bälle (1)", "Bälle (2)",
@ -65,8 +65,3 @@ void PassivModel::write(ESGRAF48::LateSkillsPassivModel &model) const
 	model.set_fleisch1(testItems[8].isChecked());
 	model.set_fleisch2(testItems[9].isChecked());
 }
-	
-void PassivModel::printHeader(QPainter &painter) const
-{
-	drawHeader2(painter, "Subtest 6: Späte Fähigkeiten (7;0-8;11)");
-}
--- a/source/SubTests/LateSkills/PassivModel.h
+++ b/source/SubTests/LateSkills/PassivModel.h
@ -1,19 +1,17 @@
 #pragma once

-#include "LateSkillsModel.h"
+#include "CheckableTestModel.h"
 #include "LateSkillsPassivModel.pb.h"

-class PassivModel : public LateSkillsModel
+class PassivModel : public CheckableTestModel
 {
 	Q_OBJECT

 public:
 	PassivModel(QObject *parent);
-	bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;
+	bool setData(const QModelIndex &index, const QVariant &value,
+		int role = Qt::EditRole) override;

 	void read(const ESGRAF48::LateSkillsPassivModel &model);
 	void write(ESGRAF48::LateSkillsPassivModel &model) const;
-
-protected:
-	void printHeader(QPainter &painter) const override;
 };
--- a/source/SubTests/Plural/CMakeLists.txt
+++ b/source/SubTests/Plural/CMakeLists.txt
@ -39,7 +39,9 @@ target_include_directories(${PROJECT_NAME}

 target_link_libraries(${PROJECT_NAME}
 	PRIVATE
-		PrintableModel
+		CheckableItem
+		CheckableTest
+		CheckableTestModel
 		Qt5::Widgets
 		${Protobuf_LIBRARIES}
 )
--- a/source/SubTests/Plural/PluralModel.cpp
+++ b/source/SubTests/Plural/PluralModel.cpp
@ -2,18 +2,24 @@

 #include <QSize>

-#include <regex>
-
 PluralModel::PluralModel(QObject *parent)
-    : PrintableModel(parent)
+    : CheckableTestModel(parent)
 {
-	m_title = "Subtest 5: Plural";
-
-	m_tests = {{"Plural",
+	m_tests = {{"",
 	            {"Fisch /-e/", "Banane /-n/", "Bonbon /-s/", "Ei /-er/", "Eimer /-ø/",
 	             "Korn UML+/-er/", "Nuss UML+/-e/", "Bär /-en/", "Apfel UML"}}};
 }

+QVariant PluralModel::data(const QModelIndex &index, int role) const
+{
+	if (role == Qt::SizeHintRole)
+	{
+		return QSize(180, 0);
+	}
+
+	return CheckableTestModel::data(index, role);
+}
+
 void PluralModel::read(const ESGRAF48::PluralModel &model)
 {
 	auto &testItems = m_tests.at(0).items();
@ -45,39 +51,3 @@ void PluralModel::write(ESGRAF48::PluralModel &model) const
 	model.set_baer(testItems[7].isChecked());
 	model.set_apfel(testItems[8].isChecked());
 }
-
-void PluralModel::printTests(QPainter &painter) const
-{
-	painter.setFont(tableFont());
-	painter.setPen(tablePen());
-
-	auto width = painter.device()->width();
-	auto height = 1.5 * painter.fontMetrics().lineSpacing();
-
-	double headerWidth = headerWidthFactor() * width;
-	double cellWidth = cellWidthFactor() * width;
-	double rowHeight = height;
-
-	double x = 0;
-	double y = 0;
-	for (const auto &test : m_tests)
-	{
-		drawTextSquare(painter, {0, y, headerWidth, 3 * rowHeight}, test.name());
-		x = headerWidth;
-
-		for (const auto &item : test.items())
-		{
-			QString itemText =
-			    QString::fromStdString(std::regex_replace(item.getText(), std::regex("\\s"), "\n"));
-
-			drawTextSquare(painter, {x, y, cellWidth, 2 * rowHeight}, itemText);
-			drawCheckSquare(painter, {x, y + 2 * rowHeight, cellWidth, rowHeight},
-			                item.isChecked());
-
-			x += cellWidth;
-		}
-		y += 2 * rowHeight;
-	}
-
-	painter.translate(0, y + 2 * rowHeight);
-}
--- a/source/SubTests/Plural/PluralModel.h
+++ b/source/SubTests/Plural/PluralModel.h
@ -1,18 +1,18 @@
 #pragma once

-#include "PrintableModel.h"
+#include "CheckableTestModel.h"
 #include "PluralModel.pb.h"

-class PluralModel : public PrintableModel
+class PluralModel : public CheckableTestModel
 {
 	Q_OBJECT

 public:
 	PluralModel(QObject *parent);

+    QVariant data(
+        const QModelIndex &index, int role = Qt::DisplayRole) const override;
+
 	void read(const ESGRAF48::PluralModel &model);
 	void write(ESGRAF48::PluralModel &model) const;
-
-protected:
-	virtual void printTests(QPainter &painter) const;
 };
--- a/source/SubTests/Plural/PluralWidget.cpp
+++ b/source/SubTests/Plural/PluralWidget.cpp
@ -8,8 +8,6 @@ PluralWidget::PluralWidget(QWidget *parent)
 	, ui(new Ui::PluralWidget)
 {
 	ui->setupUi(this);
-
-	ui->pluralTableView->horizontalHeader()->hide();
 }

 PluralWidget::~PluralWidget()
@ -20,4 +18,5 @@ PluralWidget::~PluralWidget()
 void PluralWidget::setModel(PluralModel *model)
 {
 	ui->pluralTableView->setModel(model);
+    ui->pluralTableView->resizeColumnsToContents();
 }
--- a/source/SubTests/Plural/PluralWidget.ui
+++ b/source/SubTests/Plural/PluralWidget.ui
@ -15,7 +15,17 @@
  </property>
  <layout class="QVBoxLayout" name="verticalLayout">
   <item>
-    <widget class="QTableView" name="pluralTableView"/>
+    <widget class="QTableView" name="pluralTableView">
+     <attribute name="horizontalHeaderVisible">
+      <bool>false</bool>
+     </attribute>
+     <attribute name="horizontalHeaderDefaultSectionSize">
+      <number>120</number>
+     </attribute>
+     <attribute name="verticalHeaderVisible">
+      <bool>false</bool>
+     </attribute>
+    </widget>
   </item>
  </layout>
 </widget>
--- a/source/SubTests/V2Svk/CMakeLists.txt
+++ b/source/SubTests/V2Svk/CMakeLists.txt
@ -20,10 +20,6 @@ protobuf_generate_cpp(V2Svk_PROTO_SRCS V2Svk_PROTO_HDRS ${V2Svk_PROTO_FILES})
 add_library(${PROJECT_NAME}
 	V2SvkWidget.cpp
 	V2SvkModel.cpp
-	WFModel.cpp
-	OTModel.cpp
-	TPrModel.cpp
-	TPeModel.cpp
 	${UI_HEADERS}
 	${V2Svk_PROTO_SRCS}
 	${V2Svk_PROTO_HDRS}
@ -43,7 +39,9 @@ target_include_directories(${PROJECT_NAME}

 target_link_libraries(${PROJECT_NAME}
 	PRIVATE
-		PrintableModel
+		CheckableItem
+		CheckableTest
+		CheckableTestModel
 		Qt5::Widgets
 		${Protobuf_LIBRARIES}
 )
--- a/source/SubTests/V2Svk/OTModel.cpp
+++ b/source/SubTests/V2Svk/OTModel.cpp
@ -1,115 +0,0 @@
-#include "OTModel.h"
-
-OTModel::OTModel(QObject *parent)
-    : V2SvkModel(parent)
-{
-	m_tests = {
-	    {"Objekt-Topikalisierung",
-	     {"Affe", "Affe", "Affe", "Affe", "Schwein", "Schwein", "Schwein", "Schwein", "Gans",
-	      "Gans", "Gans", "Gans"}},
-	    {"SVK: Stamm",
-	     {"Affe", "Affe", "Affe", "Affe", "Schwein", "Schwein", "Schwein", "Schwein", "Gans",
-	      "Gans", "Gans", "Gans"}},
-	};
-}
-
-unsigned int OTModel::getV2Points() const
-{
-	unsigned int points = 0;
-
-	for (auto testIndex : {0})
-	{
-		const auto &test = m_tests.at(testIndex);
-
-		for (const auto &item : test.items())
-		{
-			if (item.isChecked())
-			{
-				points++;
-			}
-		}
-	}
-
-	return points;
-}
-
-unsigned int OTModel::getSvkPoints() const
-{
-	unsigned int points = 0;
-
-	for (auto testIndex : {1})
-	{
-		const auto &test = m_tests.at(testIndex);
-
-		for (const auto &item : test.items())
-		{
-			if (item.isChecked())
-			{
-				points++;
-			}
-		}
-	}
-
-	return points;
-}
-
-void OTModel::write(ESGRAF48::V2SvkModel &model) const
-{
-	auto writeFourVals = [&](ESGRAF48::V2SvkModel::FourEach *modelData, int testIndex) {
-		if (modelData != nullptr)
-		{
-			const auto &testItems = m_tests.at(testIndex).items();
-
-			modelData->set_affe1(testItems[0].isChecked());
-			modelData->set_affe2(testItems[1].isChecked());
-			modelData->set_affe3(testItems[2].isChecked());
-			modelData->set_affe4(testItems[3].isChecked());
-			modelData->set_schwein1(testItems[4].isChecked());
-			modelData->set_schwein2(testItems[5].isChecked());
-			modelData->set_schwein3(testItems[6].isChecked());
-			modelData->set_schwein4(testItems[7].isChecked());
-			modelData->set_gans1(testItems[8].isChecked());
-			modelData->set_gans2(testItems[9].isChecked());
-			modelData->set_gans3(testItems[10].isChecked());
-			modelData->set_gans4(testItems[11].isChecked());
-		}
-	};
-
-	writeFourVals(model.mutable_objtop(), 0);
-	writeFourVals(model.mutable_svkstamm(), 1);
-}
-
-void OTModel::read(const ESGRAF48::V2SvkModel &model)
-{
-	auto readFourVals = [&](const ESGRAF48::V2SvkModel::FourEach &modelData, int testIndex) {
-		auto &testItems = m_tests.at(testIndex).items();
-
-		testItems[0].setState(modelData.affe1());
-		testItems[1].setState(modelData.affe2());
-		testItems[2].setState(modelData.affe3());
-		testItems[3].setState(modelData.affe4());
-		testItems[4].setState(modelData.schwein1());
-		testItems[5].setState(modelData.schwein2());
-		testItems[6].setState(modelData.schwein3());
-		testItems[7].setState(modelData.schwein4());
-		testItems[8].setState(modelData.gans1());
-		testItems[9].setState(modelData.gans2());
-		testItems[10].setState(modelData.gans3());
-		testItems[11].setState(modelData.gans4());
-	};
-
-	readFourVals(model.objtop(), 0);
-	readFourVals(model.svkstamm(), 1);
-
-	emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
-}
-
-std::set<int> OTModel::v2Tests() const
-{
-	return {0};
-};
-
-std::set<int> OTModel::svkTests() const
-{
-	return {1};
-};
--- a/source/SubTests/V2Svk/OTModel.h
+++ b/source/SubTests/V2Svk/OTModel.h
@ -1,24 +0,0 @@
-#pragma once
-
-#include "V2SvkModel.h"
-#include "V2SvkModel.pb.h"
-
-class OTModel : public V2SvkModel
-{
-	Q_OBJECT
-
-public:
-	OTModel(QObject *parent);
-
-	unsigned int getV2Points() const override;
-	unsigned int getSvkPoints() const override;
-
-	void write(ESGRAF48::V2SvkModel &model) const override;
-	void read(const ESGRAF48::V2SvkModel &model) override;
-
-protected:
-	void printHeader(QPainter &) const override {};
-
-	std::set<int> v2Tests() const override;
-	std::set<int> svkTests() const override;
-};
--- a/source/SubTests/V2Svk/TPeModel.cpp
+++ b/source/SubTests/V2Svk/TPeModel.cpp
@ -1,105 +0,0 @@
-#include "TPeModel.h"
-
-TPeModel::TPeModel(QObject *parent)
-    : V2SvkModel(parent)
-{
-	m_tests = {
-	    {"Temporaladverb Perfekt", {"Affe", "Affe", "Schwein", "Schwein", "Gans", "Gans"}},
-	    {"Verbtrennung", {"Affe", "Affe", "Schwein", "Schwein", "Gans", "Gans"}},
-	    {"SVK: /-e/ o. Stamm", {"Affe", "Affe", "Schwein", "Schwein", "Gans", "Gans"}},
-	    {"Partizip", {"Affe", "Affe", "Schwein", "Schwein", "Gans", "Gans"}},
-	};
-}
-
-unsigned int TPeModel::getV2Points() const
-{
-	unsigned int points = 0;
-
-	for (auto testIndex : {0, 1})
-	{
-		const auto &test = m_tests.at(testIndex);
-
-		for (const auto &item : test.items())
-		{
-			if (item.isChecked())
-			{
-				points++;
-			}
-		}
-	}
-
-	return points;
-}
-
-unsigned int TPeModel::getSvkPoints() const
-{
-	unsigned int points = 0;
-
-	for (auto testIndex : {2, 3})
-	{
-		const auto &test = m_tests.at(testIndex);
-
-		for (const auto &item : test.items())
-		{
-			if (item.isChecked())
-			{
-				points++;
-			}
-		}
-	}
-
-	return points;
-}
-
-void TPeModel::write(ESGRAF48::V2SvkModel &model) const
-{
-	auto writeTwoVals = [&](ESGRAF48::V2SvkModel::TwoEach *modelData, int testIndex) {
-		if (modelData != nullptr)
-		{
-			const auto &testItems = m_tests.at(testIndex).items();
-
-			modelData->set_affe1(testItems[0].isChecked());
-			modelData->set_affe2(testItems[1].isChecked());
-			modelData->set_schwein1(testItems[2].isChecked());
-			modelData->set_schwein2(testItems[3].isChecked());
-			modelData->set_gans1(testItems[4].isChecked());
-			modelData->set_gans2(testItems[5].isChecked());
-		}
-	};
-
-	writeTwoVals(model.mutable_tempperf(), 0);
-	writeTwoVals(model.mutable_verbtrennung2(), 1);
-	writeTwoVals(model.mutable_svke2(), 2);
-	writeTwoVals(model.mutable_partizip(), 3);
-}
-
-void TPeModel::read(const ESGRAF48::V2SvkModel &model)
-{
-	auto readTwoVals = [&](const ESGRAF48::V2SvkModel::TwoEach &modelData, int testIndex) {
-		auto &testItems = m_tests.at(testIndex).items();
-
-		testItems[0].setState(modelData.affe1());
-		testItems[1].setState(modelData.affe2());
-		testItems[2].setState(modelData.schwein1());
-		testItems[3].setState(modelData.schwein2());
-		testItems[4].setState(modelData.gans1());
-		testItems[5].setState(modelData.gans2());
-	};
-
-	readTwoVals(model.tempperf(), 0);
-	readTwoVals(model.verbtrennung2(), 1);
-	readTwoVals(model.svke2(), 2);
-	readTwoVals(model.partizip(), 3);
-
-	emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
-}
-
-std::set<int> TPeModel::v2Tests() const
-{
-	return {0, 1};
-};
-
-std::set<int> TPeModel::svkTests() const
-{
-	return {2, 3};
-};
--- a/source/SubTests/V2Svk/TPeModel.h
+++ b/source/SubTests/V2Svk/TPeModel.h
@ -1,24 +0,0 @@
-#pragma once
-
-#include "V2SvkModel.h"
-#include "V2SvkModel.pb.h"
-
-class TPeModel : public V2SvkModel
-{
-	Q_OBJECT
-
-public:
-	TPeModel(QObject *parent);
-
-	unsigned int getV2Points() const override;
-	unsigned int getSvkPoints() const override;
-
-	void write(ESGRAF48::V2SvkModel &model) const override;
-	void read(const ESGRAF48::V2SvkModel &model) override;
-
-protected:
-	void printHeader(QPainter &) const override {};
-
-	std::set<int> v2Tests() const override;
-	std::set<int> svkTests() const override;
-};
--- a/source/SubTests/V2Svk/TPrModel.cpp
+++ b/source/SubTests/V2Svk/TPrModel.cpp
@ -1,99 +0,0 @@
-#include "TPrModel.h"
-
-TPrModel::TPrModel(QObject *parent)
-    : V2SvkModel(parent)
-{
-	m_tests = {
-	    {"Temporaladverb Präsens", {"Affe", "Affe", "Schwein", "Schwein", "Gans", "Gans"}},
-	    {"SKV: /-e/ o. Stamm", {"Affe", "Affe", "Schwein", "Schwein", "Gans", "Gans"}},
-	};
-}
-
-unsigned int TPrModel::getV2Points() const
-{
-	unsigned int points = 0;
-
-	for (auto testIndex : {0})
-	{
-		const auto &test = m_tests.at(testIndex);
-
-		for (const auto &item : test.items())
-		{
-			if (item.isChecked())
-			{
-				points++;
-			}
-		}
-	}
-
-	return points;
-}
-
-unsigned int TPrModel::getSvkPoints() const
-{
-	unsigned int points = 0;
-
-	for (auto testIndex : {1})
-	{
-		const auto &test = m_tests.at(testIndex);
-
-		for (const auto &item : test.items())
-		{
-			if (item.isChecked())
-			{
-				points++;
-			}
-		}
-	}
-
-	return points;
-}
-
-void TPrModel::write(ESGRAF48::V2SvkModel &model) const
-{
-	auto writeTwoVals = [&](ESGRAF48::V2SvkModel::TwoEach *modelData, int testIndex) {
-		if (modelData != nullptr)
-		{
-			const auto &testItems = m_tests.at(testIndex).items();
-
-			modelData->set_affe1(testItems[0].isChecked());
-			modelData->set_affe2(testItems[1].isChecked());
-			modelData->set_schwein1(testItems[2].isChecked());
-			modelData->set_schwein2(testItems[3].isChecked());
-			modelData->set_gans1(testItems[4].isChecked());
-			modelData->set_gans2(testItems[5].isChecked());
-		}
-	};
-
-	writeTwoVals(model.mutable_temppraes(), 0);
-	writeTwoVals(model.mutable_svke1(), 1);
-}
-
-void TPrModel::read(const ESGRAF48::V2SvkModel &model)
-{
-	auto readTwoVals = [&](const ESGRAF48::V2SvkModel::TwoEach &modelData, int testIndex) {
-		auto &testItems = m_tests.at(testIndex).items();
-
-		testItems[0].setState(modelData.affe1());
-		testItems[1].setState(modelData.affe2());
-		testItems[2].setState(modelData.schwein1());
-		testItems[3].setState(modelData.schwein2());
-		testItems[4].setState(modelData.gans1());
-		testItems[5].setState(modelData.gans2());
-	};
-
-	readTwoVals(model.temppraes(), 0);
-	readTwoVals(model.svke1(), 1);
-
-	emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
-}
-
-std::set<int> TPrModel::v2Tests() const
-{
-	return {0};
-};
-
-std::set<int> TPrModel::svkTests() const
-{
-	return {1};
-};
--- a/source/SubTests/V2Svk/TPrModel.h
+++ b/source/SubTests/V2Svk/TPrModel.h
@ -1,24 +0,0 @@
-#pragma once
-
-#include "V2SvkModel.h"
-#include "V2SvkModel.pb.h"
-
-class TPrModel : public V2SvkModel
-{
-	Q_OBJECT
-
-public:
-	TPrModel(QObject *parent);
-
-	unsigned int getV2Points() const override;
-	unsigned int getSvkPoints() const override;
-
-	void write(ESGRAF48::V2SvkModel &model) const override;
-	void read(const ESGRAF48::V2SvkModel &model) override;
-
-protected:
-	void printHeader(QPainter &) const override{};
-
-	std::set<int> v2Tests() const override;
-	std::set<int> svkTests() const override;
-};
--- a/source/SubTests/V2Svk/V2SvkModel.cpp
+++ b/source/SubTests/V2Svk/V2SvkModel.cpp
@ -1,137 +1,201 @@
 #include "V2SvkModel.h"

-#include <regex>
-
 V2SvkModel::V2SvkModel(QObject *parent)
-    : PrintableModel(parent)
+    : CheckableTestModel(parent)
 {
+	m_tests = {
+	    {"W-Frage",
+	     {"Affe", "Affe", "Affe", "Affe", "Schwein", "Schwein", "Schwein", "Schwein", "Gans",
+	      "Gans", "Gans", "Gans"}},
+	    {"Verbtrennung", {"", "Affe", "", "", "", "", "", "Schwein", "", "", "Gans", ""}},
+	    {"SVK: /-st/",
+	     {"Affe", "Affe", "Affe", "Affe", "Schwein", "Schwein", "Schwein", "Schwein", "Gans",
+	      "Gans", "Gans", "Gans"}},
+
+	    {"Objekt-Topikalisierung",
+	     {"Affe", "Affe", "Affe", "Affe", "Schwein", "Schwein", "Schwein", "Schwein", "Gans",
+	      "Gans", "Gans", "Gans"}},
+	    {"SVK: Stamm",
+	     {"Affe", "Affe", "Affe", "Affe", "Schwein", "Schwein", "Schwein", "Schwein", "Gans",
+	      "Gans", "Gans", "Gans"}},
+
+	    {"Temporaladverb Präsens", {"Affe", "Affe", "Schwein", "Schwein", "Gans", "Gans"}},
+	    {"SKV: /-e/ o. Stamm", {"Affe", "Affe", "Schwein", "Schwein", "Gans", "Gans"}},
+
+	    {"Temporaladverb Perfekt", {"Affe", "Affe", "Schwein", "Schwein", "Gans", "Gans"}},
+	    {"Verbtrennung", {"Affe", "Affe", "Schwein", "Schwein", "Gans", "Gans"}},
+	    {"SVK: /-e/ o. Stamm", {"Affe", "Affe", "Schwein", "Schwein", "Gans", "Gans"}},
+	    {"Partizip", {"Affe", "Affe", "Schwein", "Schwein", "Gans", "Gans"}},
+	};
 }

-void V2SvkModel::printTests(QPainter &painter) const
+unsigned int V2SvkModel::getV2Points()
 {
-	painter.setFont(tableFont());
-	painter.setPen(tablePen());
+	unsigned int points = 0;

-	auto width = painter.device()->width();
-	auto height = 1.5 * painter.fontMetrics().lineSpacing();
-
-	auto v2TestIndices = v2Tests();
-	auto svkTestIndices = svkTests();
-
-	double x = 0;
-	double y = 0;
-	auto testIndex = 0;
-	for (const auto &test : m_tests)
+	for (auto testIndex : {0, 1, 3, 5, 7, 8})
 	{
-		double rowHeaderWidth = headerWidthFactor() * width;
-		double resultCellWidth = (test.size() > 8 ? 0.5 : 1) * cellWidthFactor() * width;
-		double rowHeight = height;
+		const auto &test = m_tests.at(testIndex);

-		QString testName = test.name();
-		if (testName.length() > 20)
-		{
-			testName = QString::fromStdString(
-			    std::regex_replace(testName.toStdString(), std::regex("[\\s-]"), "\n"));
-		}
-
-		if (testIndex == 0)
-		{
-			drawTextSquare(painter, {x, y, rowHeaderWidth, 2 * rowHeight}, testName);
-			x += rowHeaderWidth;
-
-			std::vector<std::pair<std::string, unsigned int>> columnHeaders;
-			for (const auto &item : test.items())
-			{
-				const auto &itemText = item.getText();
-				if (!columnHeaders.empty() && columnHeaders.back().first == itemText)
-				{
-					columnHeaders.back().second++;
-				}
-				else
-				{
-					columnHeaders.emplace_back(itemText, 1);
-				}
-			}
-
-			for (const auto &columnHeader : columnHeaders)
-			{
-				double cellWidth = columnHeader.second * resultCellWidth;
-				drawTextSquare(painter, {x, y, cellWidth, rowHeight}, columnHeader.first.c_str());
-				x += cellWidth;
-			}
-			x = rowHeaderWidth;
-			y += rowHeight;
-		}
-		else
-		{
-			drawTextSquare(painter, {x, y, rowHeaderWidth, rowHeight}, testName);
-			x += rowHeaderWidth;
-		}
-
-		unsigned int emptyItemsStack = 0;
 		for (const auto &item : test.items())
 		{
-			if (item.getText().empty())
+			if (item.isChecked())
 			{
-				emptyItemsStack++;
+				points++;
 			}
-			else
-			{
-				if (emptyItemsStack > 0)
-				{
-					drawGreySquare(painter, {x - emptyItemsStack * resultCellWidth, y,
-					                         emptyItemsStack * resultCellWidth, rowHeight});
-					emptyItemsStack = 0;
-				}
-
-				drawCheckSquare(painter, {x, y, resultCellWidth, rowHeight}, item.isChecked());
-			}
-			x += resultCellWidth;
 		}
-		if (emptyItemsStack > 0)
-		{
-			drawGreySquare(painter, {x - emptyItemsStack * resultCellWidth, y,
-			                         emptyItemsStack * resultCellWidth, rowHeight});
-			emptyItemsStack = 0;
-		}
-
-		if (v2TestIndices.find(testIndex) != v2TestIndices.end())
-		{
-			drawResultSquare(painter, y, false, test.getPoints());
-		}
-
-		if (svkTestIndices.find(testIndex) != svkTestIndices.end())
-		{
-			drawResultSquare(painter, y, true, test.getPoints());
-		}
-
-		x = 0;
-		y += rowHeight;
-
-		testIndex++;
 	}

-	x = 0;
-	y += height;
-
-	painter.translate(0, y);
+	return points;
 }

-void V2SvkModel::printSummary(QPainter &painter, unsigned int v2Points, unsigned int svkPoints)
+unsigned int V2SvkModel::getSvkPoints()
 {
-	painter.setFont(PrintableModel::tableFont());
-	painter.setPen(PrintableModel::tablePen());
+	unsigned int points = 0;

-	auto width = painter.device()->width();
-	auto height = 1.5 * painter.fontMetrics().lineSpacing();
+	for (auto testIndex : {2, 4, 6, 9, 10})
+	{
+		const auto &test = m_tests.at(testIndex);

-	painter.drawText(0, 0, 0.91 * width, height, Qt::AlignRight | Qt::AlignVCenter,
-	                 "Rohwertpunkte Total:");
+		for (const auto &item : test.items())
+		{
+			if (item.isChecked())
+			{
+				points++;
+			}
+		}
+	}

-	painter.setPen(resultPen());
-	drawNumberSquare(painter, 0.93 * width, 0, v2Points);
-	drawNumberSquare(painter, 0.97 * width, 0, svkPoints);
-
-	painter.translate(0, 3 * height);
+	return points;
 }

+bool V2SvkModel::isValidIndex(const QModelIndex &index) const
+{
+	switch (index.row())
+	{
+		case 1:
+			return index.column() == 1 || index.column() == 7 || index.column() == 10;
+		case 5:
+		case 6:
+		case 7:
+		case 8:
+		case 9:
+		case 10:
+			return index.column() < 6;
+		default:
+			return CheckableTestModel::isValidIndex(index);
+	}
+}
+
+void V2SvkModel::writeProtoBuf(ESGRAF48::V2SvkModel &model) const
+{
+	auto writeOneVal = [&](ESGRAF48::V2SvkModel::OneEach *modelData, int testIndex) {
+		if (modelData != nullptr)
+		{
+			const auto &testItems = m_tests.at(testIndex).items();
+
+			modelData->set_affe(testItems[1].isChecked());
+			modelData->set_schwein(testItems[7].isChecked());
+			modelData->set_gans(testItems[10].isChecked());
+		}
+	};
+
+	auto writeTwoVals = [&](ESGRAF48::V2SvkModel::TwoEach *modelData, int testIndex) {
+		if (modelData != nullptr)
+		{
+			const auto &testItems = m_tests.at(testIndex).items();
+
+			modelData->set_affe1(testItems[0].isChecked());
+			modelData->set_affe2(testItems[1].isChecked());
+			modelData->set_schwein1(testItems[2].isChecked());
+			modelData->set_schwein2(testItems[3].isChecked());
+			modelData->set_gans1(testItems[4].isChecked());
+			modelData->set_gans2(testItems[5].isChecked());
+		}
+	};
+
+	auto writeFourVals = [&](ESGRAF48::V2SvkModel::FourEach *modelData, int testIndex) {
+		if (modelData != nullptr)
+		{
+			const auto &testItems = m_tests.at(testIndex).items();
+
+			modelData->set_affe1(testItems[0].isChecked());
+			modelData->set_affe2(testItems[1].isChecked());
+			modelData->set_affe3(testItems[2].isChecked());
+			modelData->set_affe4(testItems[3].isChecked());
+			modelData->set_schwein1(testItems[4].isChecked());
+			modelData->set_schwein2(testItems[5].isChecked());
+			modelData->set_schwein3(testItems[6].isChecked());
+			modelData->set_schwein4(testItems[7].isChecked());
+			modelData->set_gans1(testItems[8].isChecked());
+			modelData->set_gans2(testItems[9].isChecked());
+			modelData->set_gans3(testItems[10].isChecked());
+			modelData->set_gans4(testItems[11].isChecked());
+		}
+	};
+
+	writeFourVals(model.mutable_wfrage(), 0);
+	writeOneVal(model.mutable_verbtrennung1(), 1);
+	writeFourVals(model.mutable_svkst(), 2);
+	writeFourVals(model.mutable_objtop(), 3);
+	writeFourVals(model.mutable_svkstamm(), 4);
+	writeTwoVals(model.mutable_temppraes(), 5);
+	writeTwoVals(model.mutable_svke1(), 6);
+	writeTwoVals(model.mutable_tempperf(), 7);
+	writeTwoVals(model.mutable_verbtrennung2(), 8);
+	writeTwoVals(model.mutable_svke2(), 9);
+	writeTwoVals(model.mutable_partizip(), 10);
+}
+
+void V2SvkModel::readProtoBuf(const ESGRAF48::V2SvkModel &model)
+{
+	auto readOneVal = [&](const ESGRAF48::V2SvkModel::OneEach &modelData, int testIndex) {
+		auto &testItems = m_tests.at(testIndex).items();
+
+		testItems[1].setState(modelData.affe());
+		testItems[7].setState(modelData.schwein());
+		testItems[10].setState(modelData.gans());
+	};
+
+	auto readTwoVals = [&](const ESGRAF48::V2SvkModel::TwoEach &modelData, int testIndex) {
+		auto &testItems = m_tests.at(testIndex).items();
+
+		testItems[0].setState(modelData.affe1());
+		testItems[1].setState(modelData.affe2());
+		testItems[2].setState(modelData.schwein1());
+		testItems[3].setState(modelData.schwein2());
+		testItems[4].setState(modelData.gans1());
+		testItems[5].setState(modelData.gans2());
+	};
+
+	auto readFourVals = [&](const ESGRAF48::V2SvkModel::FourEach &modelData, int testIndex) {
+		auto &testItems = m_tests.at(testIndex).items();
+
+		testItems[0].setState(modelData.affe1());
+		testItems[1].setState(modelData.affe2());
+		testItems[2].setState(modelData.affe3());
+		testItems[3].setState(modelData.affe4());
+		testItems[4].setState(modelData.schwein1());
+		testItems[5].setState(modelData.schwein2());
+		testItems[6].setState(modelData.schwein3());
+		testItems[7].setState(modelData.schwein4());
+		testItems[8].setState(modelData.gans1());
+		testItems[9].setState(modelData.gans2());
+		testItems[10].setState(modelData.gans3());
+		testItems[11].setState(modelData.gans4());
+	};
+
+	readFourVals(model.wfrage(), 0);
+	readOneVal(model.verbtrennung1(), 1);
+	readFourVals(model.svkst(), 2);
+	readFourVals(model.objtop(), 3);
+	readFourVals(model.svkstamm(), 4);
+	readTwoVals(model.temppraes(), 5);
+	readTwoVals(model.svke1(), 6);
+	readTwoVals(model.tempperf(), 7);
+	readTwoVals(model.verbtrennung2(), 8);
+	readTwoVals(model.svke2(), 9);
+	readTwoVals(model.partizip(), 10);
+
+	emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
+}
--- a/source/SubTests/V2Svk/V2SvkModel.h
+++ b/source/SubTests/V2Svk/V2SvkModel.h
@ -1,27 +1,21 @@
 #pragma once

-#include "PrintableModel.h"
+#include "CheckableTestModel.h"
 #include "V2SvkModel.pb.h"

-class V2SvkModel : public PrintableModel
+class V2SvkModel : public CheckableTestModel
 {
 	Q_OBJECT

 public:
 	V2SvkModel(QObject *parent);

-	virtual unsigned int getV2Points() const = 0;
-	virtual unsigned int getSvkPoints() const = 0;
+	unsigned int getV2Points();
+	unsigned int getSvkPoints();

-	virtual void write(ESGRAF48::V2SvkModel &model) const = 0;
-	virtual void read(const ESGRAF48::V2SvkModel &model) = 0;
-
-	static void printSummary(QPainter &painter, unsigned int v2Points, unsigned int svkPoints);
+	void writeProtoBuf(ESGRAF48::V2SvkModel &model) const;
+	void readProtoBuf(const ESGRAF48::V2SvkModel &model);

 protected:
-	void printTests(QPainter &painter) const override;
-	void printSummary(QPainter &painter) const override {};
-
-	virtual std::set<int> v2Tests() const = 0;
-	virtual std::set<int> svkTests() const = 0;
+	bool isValidIndex(const QModelIndex &index) const override;
 };
--- a/source/SubTests/V2Svk/V2SvkWidget.cpp
+++ b/source/SubTests/V2Svk/V2SvkWidget.cpp
@ -1,20 +1,14 @@
 #include "V2SvkWidget.h"
 #include "ui_V2SvkWidget.h"

-#include "WFModel.h"
-#include "OTModel.h"
-#include "TPrModel.h"
-#include "TPeModel.h"
+#include "V2SvkModel.h"

 V2SvkWidget::V2SvkWidget(QWidget *parent)
-    : QWidget(parent)
-    , ui(new Ui::V2SvkWidget)
+	: QWidget(parent)
+	, ui(new Ui::V2SvkWidget)
 {
 	ui->setupUi(this);
-	ui->wfTableView->horizontalHeader()->hide();
-	ui->otTableView->horizontalHeader()->hide();
-	ui->tprTableView->horizontalHeader()->hide();
-	ui->tpeTableView->horizontalHeader()->hide();
+    ui->v2SvkTableView->horizontalHeader()->hide();
 }

 V2SvkWidget::~V2SvkWidget()
@ -22,22 +16,7 @@ V2SvkWidget::~V2SvkWidget()
 	delete ui;
 }

-void V2SvkWidget::setWFModel(WFModel *model)
+void V2SvkWidget::setV2SvkModel(V2SvkModel *model)
 {
-	ui->wfTableView->setModel(model);
-}
-
-void V2SvkWidget::setOTModel(OTModel *model)
-{
-	ui->otTableView->setModel(model);
-}
-
-void V2SvkWidget::setTPrModel(TPrModel *model)
-{
-	ui->tprTableView->setModel(model);
-}
-
-void V2SvkWidget::setTPeModel(TPeModel *model)
-{
-	ui->tpeTableView->setModel(model);
+	ui->v2SvkTableView->setModel(model);
 }
--- a/source/SubTests/V2Svk/V2SvkWidget.h
+++ b/source/SubTests/V2Svk/V2SvkWidget.h
@ -2,10 +2,7 @@

 #include <QWidget>

-class WFModel;
-class OTModel;
-class TPrModel;
-class TPeModel;
+class V2SvkModel;

 namespace Ui {
 class V2SvkWidget;
@ -22,8 +19,5 @@ public:
 	V2SvkWidget(QWidget *parent = nullptr);
 	~V2SvkWidget();

-	void setWFModel(WFModel *model);
-	void setOTModel(OTModel *model);
-	void setTPrModel(TPrModel *model);
-	void setTPeModel(TPeModel *model);
+	void setV2SvkModel(V2SvkModel *model);
 };
--- a/source/SubTests/V2Svk/V2SvkWidget.ui
+++ b/source/SubTests/V2Svk/V2SvkWidget.ui
@ -15,16 +15,7 @@
  </property>
  <layout class="QVBoxLayout" name="verticalLayout">
   <item>
-    <widget class="QTableView" name="wfTableView"/>
-   </item>
-   <item>
-    <widget class="QTableView" name="otTableView"/>
-   </item>
-   <item>
-    <widget class="QTableView" name="tprTableView"/>
-   </item>
-   <item>
-    <widget class="QTableView" name="tpeTableView"/>
+    <widget class="QTableView" name="v2SvkTableView"/>
   </item>
  </layout>
 </widget>
--- a/source/SubTests/V2Svk/WFModel.cpp
+++ b/source/SubTests/V2Svk/WFModel.cpp
@ -1,147 +0,0 @@
-#include "WFModel.h"
-
-WFModel::WFModel(QObject *parent)
-    : V2SvkModel(parent)
-{
-	m_title = "Subtest 1: Verbzweitstellungsregel (V2) und Subjekt-Verb-Kontrollregel (SVK)";
-
-	m_tests = {
-	    {"W-Frage",
-	     {"Affe", "Affe", "Affe", "Affe", "Schwein", "Schwein", "Schwein", "Schwein", "Gans",
-	      "Gans", "Gans", "Gans"}},
-	    {"Verbtrennung", {"", "Affe", "", "", "", "", "", "Schwein", "", "", "Gans", ""}},
-	    {"SVK: /-st/",
-	     {"Affe", "Affe", "Affe", "Affe", "Schwein", "Schwein", "Schwein", "Schwein", "Gans",
-	      "Gans", "Gans", "Gans"}},
-	};
-}
-
-unsigned int WFModel::getV2Points() const
-{
-	unsigned int points = 0;
-
-	for (auto testIndex : {0, 1})
-	{
-		const auto &test = m_tests.at(testIndex);
-
-		for (const auto &item : test.items())
-		{
-			if (item.isChecked())
-			{
-				points++;
-			}
-		}
-	}
-
-	return points;
-}
-
-unsigned int WFModel::getSvkPoints() const
-{
-	unsigned int points = 0;
-
-	for (auto testIndex : {2})
-	{
-		const auto &test = m_tests.at(testIndex);
-
-		for (const auto &item : test.items())
-		{
-			if (item.isChecked())
-			{
-				points++;
-			}
-		}
-	}
-
-	return points;
-}
-
-bool WFModel::isValidIndex(const QModelIndex &index) const
-{
-	if (index.row() == 1)
-	{
-		return index.column() == 1 || index.column() == 7 || index.column() == 10;
-	}
-
-	return CheckableTestModel::isValidIndex(index);
-}
-
-void WFModel::write(ESGRAF48::V2SvkModel &model) const
-{
-	auto writeOneVal = [&](ESGRAF48::V2SvkModel::OneEach *modelData, int testIndex) {
-		if (modelData != nullptr)
-		{
-			const auto &testItems = m_tests.at(testIndex).items();
-
-			modelData->set_affe(testItems[1].isChecked());
-			modelData->set_schwein(testItems[7].isChecked());
-			modelData->set_gans(testItems[10].isChecked());
-		}
-	};
-
-	auto writeFourVals = [&](ESGRAF48::V2SvkModel::FourEach *modelData, int testIndex) {
-		if (modelData != nullptr)
-		{
-			const auto &testItems = m_tests.at(testIndex).items();
-
-			modelData->set_affe1(testItems[0].isChecked());
-			modelData->set_affe2(testItems[1].isChecked());
-			modelData->set_affe3(testItems[2].isChecked());
-			modelData->set_affe4(testItems[3].isChecked());
-			modelData->set_schwein1(testItems[4].isChecked());
-			modelData->set_schwein2(testItems[5].isChecked());
-			modelData->set_schwein3(testItems[6].isChecked());
-			modelData->set_schwein4(testItems[7].isChecked());
-			modelData->set_gans1(testItems[8].isChecked());
-			modelData->set_gans2(testItems[9].isChecked());
-			modelData->set_gans3(testItems[10].isChecked());
-			modelData->set_gans4(testItems[11].isChecked());
-		}
-	};
-
-	writeFourVals(model.mutable_wfrage(), 0);
-	writeOneVal(model.mutable_verbtrennung1(), 1);
-}
-
-void WFModel::read(const ESGRAF48::V2SvkModel &model)
-{
-	auto readOneVal = [&](const ESGRAF48::V2SvkModel::OneEach &modelData, int testIndex) {
-		auto &testItems = m_tests.at(testIndex).items();
-
-		testItems[1].setState(modelData.affe());
-		testItems[7].setState(modelData.schwein());
-		testItems[10].setState(modelData.gans());
-	};
-
-	auto readFourVals = [&](const ESGRAF48::V2SvkModel::FourEach &modelData, int testIndex) {
-		auto &testItems = m_tests.at(testIndex).items();
-
-		testItems[0].setState(modelData.affe1());
-		testItems[1].setState(modelData.affe2());
-		testItems[2].setState(modelData.affe3());
-		testItems[3].setState(modelData.affe4());
-		testItems[4].setState(modelData.schwein1());
-		testItems[5].setState(modelData.schwein2());
-		testItems[6].setState(modelData.schwein3());
-		testItems[7].setState(modelData.schwein4());
-		testItems[8].setState(modelData.gans1());
-		testItems[9].setState(modelData.gans2());
-		testItems[10].setState(modelData.gans3());
-		testItems[11].setState(modelData.gans4());
-	};
-
-	readFourVals(model.wfrage(), 0);
-	readOneVal(model.verbtrennung1(), 1);
-
-	emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
-}
-
-std::set<int> WFModel::v2Tests() const
-{
-	return {0, 1};
-};
-
-std::set<int> WFModel::svkTests() const
-{
-	return {2};
-};
--- a/source/SubTests/V2Svk/WFModel.h
+++ b/source/SubTests/V2Svk/WFModel.h
@ -1,24 +0,0 @@
-#pragma once
-
-#include "V2SvkModel.h"
-#include "V2SvkModel.pb.h"
-
-class WFModel : public V2SvkModel
-{
-	Q_OBJECT
-
-public:
-	WFModel(QObject *parent);
-
-	unsigned int getV2Points() const override;
-	unsigned int getSvkPoints() const override;
-
-	void write(ESGRAF48::V2SvkModel &model) const override;
-	void read(const ESGRAF48::V2SvkModel &model) override;
-
-protected:
-	std::set<int> v2Tests() const override;
-	std::set<int> svkTests() const override;
-
-	bool isValidIndex(const QModelIndex &index) const override;
-};
--- a/source/SubTests/VerbEnd/CMakeLists.txt
+++ b/source/SubTests/VerbEnd/CMakeLists.txt
@ -42,7 +42,6 @@ target_link_libraries(${PROJECT_NAME}
 		CheckableItem
 		CheckableTest
 		CheckableTestModel
-		PrintableModel
 		Qt5::Widgets
 		${Protobuf_LIBRARIES}
 )
--- a/source/SubTests/VerbEnd/VerbEndModel.cpp
+++ b/source/SubTests/VerbEnd/VerbEndModel.cpp
@ -1,17 +1,18 @@
 #include "VerbEndModel.h"

 VerbEndModel::VerbEndModel(QObject *parent)
-    : PrintableModel(parent)
+	: CheckableTestModel(parent)
 {
-	m_title = "Subtest 2: Verbendstellungsregel (VE)";
-
-	m_tests = {
-	    {"Telefonat", {"Kausal", "Kausal", "Relativ", "Kausal", "Final", "Temporal", "Temporal"}},
-	    {"Zaubertrick", {"Relativ", "Final", "Kausal", "Final", "Temporal", "Kausal", "Temporal"}},
-	    {"Zauberregel", {"Temporal", "Kausal", "Final", "Relativ", "Temporal", "Relativ"}}};
+	m_tests = { { "Telefonat",
+					{ "Kausal", "Kausal", "Relativ", "Kausal",
+						"Final", "Temporal", "Temporal" } },
+		{ "Zaubertrick", { "Relativ", "Final", "Kausal", "Final",
+							 "Temporal", "Kausal", "Temporal" } },
+		{ "Zauberregel", { "Temporal", "Kausal", "Final", "Relativ",
+							 "Temporal", "Relativ" } } };
 }

-void VerbEndModel::write(ESGRAF48::VerbEndModel &model) const
+void VerbEndModel::writeProtoBuf(ESGRAF48::VerbEndModel &model) const
 {
 	auto *telefonatModel = model.mutable_telefonat();
 	if (telefonatModel != nullptr)
@ -55,7 +56,7 @@ void VerbEndModel::write(ESGRAF48::VerbEndModel &model) const
 	}
 }

-void VerbEndModel::read(const ESGRAF48::VerbEndModel &model)
+void VerbEndModel::readProtoBuf(const ESGRAF48::VerbEndModel &model)
 {
 	const auto &telefonatModel = model.telefonat();
 	{
@ -97,32 +98,3 @@ void VerbEndModel::read(const ESGRAF48::VerbEndModel &model)

 	emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
 }
-
-unsigned int VerbEndModel::getKausalPoints() const
-{
-	auto points = [&](unsigned int testId, unsigned int itemId) {
-		return m_tests.at(testId).items().at(itemId).points();
-	};
-
-	return points(0, 0) + points(0, 1) + points(0, 3) + points(1, 2) + points(1, 5) + points(2, 1);
-}
-
-void VerbEndModel::printSummary(QPainter &painter) const
-{
-	painter.setFont(tableFont());
-
-	auto width = painter.device()->width();
-	auto height = 1.5 * painter.fontMetrics().lineSpacing();
-
-	painter.drawText(0, 0, 0.71 * width, height, Qt::AlignRight | Qt::AlignVCenter,
-	                 "Rohwertpunkte Kausalsätze:");
-	painter.drawText(0, 0, 0.95 * width, height, Qt::AlignRight | Qt::AlignVCenter,
-	                 "Rohwertpunkte Total:");
-
-	drawNumberSquare(painter, 0.73 * width, 0, getKausalPoints());
-
-	painter.setPen(resultPen());
-	drawNumberSquare(painter, 0.97 * width, 0, getKausalPoints());
-
-	painter.translate(0, 3 * height);
-}
--- a/source/SubTests/VerbEnd/VerbEndModel.h
+++ b/source/SubTests/VerbEnd/VerbEndModel.h
@ -1,20 +1,15 @@
 #pragma once

-#include "PrintableModel.h"
+#include "CheckableTestModel.h"
 #include "VerbEndModel.pb.h"

-class VerbEndModel : public PrintableModel
+class VerbEndModel : public CheckableTestModel
 {
 	Q_OBJECT

 public:
 	VerbEndModel(QObject *parent);

-	void write(ESGRAF48::VerbEndModel &model) const;
-	void read(const ESGRAF48::VerbEndModel &model);
-
-	unsigned int getKausalPoints() const;
-
-protected:
-	void printSummary(QPainter &painter) const override;
+	void writeProtoBuf(ESGRAF48::VerbEndModel &model) const;
+	void readProtoBuf(const ESGRAF48::VerbEndModel &model);
 };
--- a/source/mainwindow.cpp
+++ b/source/mainwindow.cpp
@ -1,7 +1,7 @@
 #include "mainwindow.h"
 #include "ui_mainwindow.h"

-#include "version.h"
+#include "DataModel.h"

 #include <QJsonObject>
 #include <QJsonDocument>
@ -13,7 +13,6 @@
 #include <QtPrintSupport/QPrinter>
 #include <QtPrintSupport/QPrintDialog>
 #include <QTextDocument>
-#include <QPainter>

 #include <QDebug>

@ -22,53 +21,16 @@
 MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
-    , m_dataModel(this)
 {
 	ui->setupUi(this);
-	setupUi();
-
-	newFile();
-}
-
-MainWindow::MainWindow(QWidget *parent, const QString &filename)
-    : QMainWindow(parent)
-    , ui(new Ui::MainWindow)
-    , m_dataModel(this)
-{
-	ui->setupUi(this);
-	setupUi();
-
-	openFile(filename);
-}
-
-void MainWindow::setupUi()
-{
-	ui->metaDataWidget->setModel(&m_dataModel.m_metaData);
-	ui->verbEndWidget->setModel(&m_dataModel.m_verbEnd);
-	ui->genusWidget->setModel(&m_dataModel.m_genus);
-	ui->pluralWidget->setModel(&m_dataModel.m_plural);
-	ui->akkusativDativWidget->setAkkusativModel(&m_dataModel.m_akkusativ);
-	ui->akkusativDativWidget->setDativModel(&m_dataModel.m_dativ);
-
-	ui->v2SvkWidget->setWFModel(&m_dataModel.m_wfModel);
-	ui->v2SvkWidget->setOTModel(&m_dataModel.m_otModel);
-	ui->v2SvkWidget->setTPrModel(&m_dataModel.m_tPrModel);
-	ui->v2SvkWidget->setTPeModel(&m_dataModel.m_tPeModel);
-
-	ui->lateSkillsWidget->setPassivModel(&m_dataModel.m_passiv);
-	ui->lateSkillsWidget->setGenitivModel(&m_dataModel.m_genitiv);
-	ui->resultWidget->setModel(&m_dataModel.m_results);

 	connect(ui->actionNew, &QAction::triggered, this, &MainWindow::newFile);
-	connect(ui->actionOpen, &QAction::triggered, this, qOverload<>(&MainWindow::openFile));
+	connect(ui->actionOpen, &QAction::triggered, this, &MainWindow::openFile);
 	connect(ui->actionSave, &QAction::triggered, this, qOverload<>(&MainWindow::saveFile));
 	connect(ui->actionSave_as, &QAction::triggered, this, &MainWindow::saveFileAs);
 	connect(ui->actionPrint, &QAction::triggered, this, &MainWindow::print);
-	connect(ui->actionExport_PDF, &QAction::triggered, this, qOverload<>(&MainWindow::savePdf));

-	connect(ui->actionAbout, &QAction::triggered, this, &MainWindow::aboutDialog);
-
-	connect(&m_dataModel, &DataModel::modelChanged, this, &MainWindow::dataModelChanged);
+	newFile();
 }

 MainWindow::~MainWindow()
@ -80,6 +42,21 @@ void MainWindow::newFile()
 {
 	closeFile();

+	m_dataModel = std::make_unique<DataModel>(this);
+	ui->metaDataWidget->setModel(&m_dataModel->m_metaData);
+	ui->verbEndWidget->setModel(&m_dataModel->m_verbEnd);
+	ui->genusWidget->setModel(&m_dataModel->m_genus);
+	ui->pluralWidget->setModel(&m_dataModel->m_plural);
+	ui->akkusativDativWidget->setAkkusativModel(&m_dataModel->m_akkusativ);
+	ui->akkusativDativWidget->setDativModel(&m_dataModel->m_dativ);
+	ui->v2SvkWidget->setV2SvkModel(&m_dataModel->m_v2Svk);
+	ui->lateSkillsWidget->setPassivModel(&m_dataModel->m_passiv);
+	ui->lateSkillsWidget->setGenitivModel(&m_dataModel->m_genitiv);
+
+	ui->resultWidget->setModel(&m_dataModel->m_results);
+
+	connect(&*m_dataModel, &DataModel::modelChanged, this, &MainWindow::dataModelChanged);
+
 	setWindowModified(false);
 	setWindowTitle("untitled[*]");
 	m_filename = "";
@ -95,22 +72,10 @@ void MainWindow::openFile()
 		return;
 	}

-	try
-	{
-		openFile(filename);
-	}
-	catch (std::exception &e)
-	{
-		QString errorMessage = QString("Error loading \"") + filename + "\": " + e.what();
-		QMessageBox::critical(this, "Error", errorMessage);
-	}
-}
-
-void MainWindow::openFile(const QString &filename)
-{
 	closeFile();

-	m_dataModel.read(filename);
+	std::fstream protoInFile(filename.toStdString(), std::ios::in | std::ios::binary);
+	m_dataModel->readProtoBuf(protoInFile);

 	setWindowModified(false);
 	setWindowTitle(filename + "[*]");
@ -134,19 +99,14 @@ void MainWindow::saveFile()

 void MainWindow::saveFileAs()
 {
-	QFileDialog saveFilenameDialog(this);
-	saveFilenameDialog.setAcceptMode(QFileDialog::AcceptSave);
-	saveFilenameDialog.setDefaultSuffix("esgraf48");
-	saveFilenameDialog.setFileMode(QFileDialog::AnyFile);
-	saveFilenameDialog.setNameFilter("ESGRAF 4-8 (*.esgraf48)");
-	saveFilenameDialog.setWindowTitle("Save file");
-
-	if (!saveFilenameDialog.exec())
+	QString filename =
+	    QFileDialog::getSaveFileName(this, "Save file", "", "ESGRAF 4-8 (*.esgraf48)");
+	if (filename.isEmpty())
 	{
 		return;
 	}

-	saveFile(saveFilenameDialog.selectedFiles().first());
+	saveFile(filename);
 }

 void MainWindow::closeFile()
@ -168,9 +128,10 @@ void MainWindow::closeFile()

 void MainWindow::print() const
 {
+	//std::ofstream htmlfile("print.html");
+	//htmlfile << m_dataModel->toHtml();
+
 	QPrinter printer;
-	printer.setPaperSize(QPrinter::A4);
-	printer.setPageMargins(20, 20, 20, 20, QPrinter::Millimeter);

 	QPrintDialog dialog(&printer);
 	if (dialog.exec() != QDialog::Accepted)
@ -178,7 +139,10 @@ void MainWindow::print() const
 		return;
 	}

-	m_dataModel.printTo(printer);
+	QTextDocument printDoc;
+	printDoc.setHtml(QString::fromStdString(m_dataModel->toHtml()));
+
+	printDoc.print(&printer);
 }

 void MainWindow::dataModelChanged()
@ -187,22 +151,6 @@ void MainWindow::dataModelChanged()
 	setWindowModified(true);
 }

-void MainWindow::savePdf()
-{
-	QFileDialog saveFilenameDialog(this);
-	saveFilenameDialog.setDefaultSuffix("pdf");
-	saveFilenameDialog.setFileMode(QFileDialog::AnyFile);
-	saveFilenameDialog.setNameFilter("PDF File (*.pdf)");
-	saveFilenameDialog.setWindowTitle("Save file");
-
-	if (!saveFilenameDialog.exec())
-	{
-		return;
-	}
-
-	savePdf(saveFilenameDialog.selectedFiles().first());
-}
-
 void MainWindow::closeEvent(QCloseEvent *event)
 {
 	closeFile();
@ -210,16 +158,9 @@ void MainWindow::closeEvent(QCloseEvent *event)

 void MainWindow::saveFile(const QString &filename)
 {
-	try
-	{
-		m_dataModel.write(filename);
-	}
-	catch (std::exception &e)
-	{
-		QString errorMessage = QString("Error saving \"") + filename + "\": " + e.what();
-		QMessageBox::critical(this, "Error", errorMessage);
-		return;
-	}
+	std::fstream protoOutFile(filename.toStdString(),
+	                          std::ios::out | std::ios::trunc | std::ios::binary);
+	m_dataModel->writeProtoBuf(protoOutFile);

 	qDebug() << "Wrote" << filename;

@ -228,21 +169,3 @@ void MainWindow::saveFile(const QString &filename)
 	m_filename = filename;
 	m_saveOnClose = false;
 }
-
-void MainWindow::savePdf(const QString &filename)
-{
-	QPrinter printer;
-	printer.setOutputFormat(QPrinter::PdfFormat);
-	printer.setPaperSize(QPrinter::A4);
-	printer.setPageMargins(20, 20, 20, 20, QPrinter::Millimeter);
-	printer.setOutputFileName(filename);
-
-	m_dataModel.printTo(printer);
-}
-
-void MainWindow::aboutDialog()
-{
-	QString infoString =
-	    QString::fromUtf8(ESGRAF48_DESCRIPTION) + " Version " + QString::fromUtf8(ESGRAF48_VERSION);
-	QMessageBox::information(this, ESGRAF48_DESCRIPTION, infoString);
-}
--- a/source/mainwindow.h
+++ b/source/mainwindow.h
@ -1,11 +1,8 @@
 #pragma once

-#include "DataModel.h"
-
 #include <QMainWindow>
-#include <QString>
-#include <QFont>

+#include <memory>

 class DataModel;
 class QDataWidgetMapper;
@ -20,32 +17,26 @@ class MainWindow : public QMainWindow

 private:
 	Ui::MainWindow *ui;
-	DataModel m_dataModel;
+	std::unique_ptr<DataModel> m_dataModel;
 	QString m_filename;
 	bool m_saveOnClose = false;

 public:
-	MainWindow(QWidget *parent);
-	MainWindow(QWidget *parent, const QString &filename);
+	MainWindow(QWidget *parent = nullptr);
 	~MainWindow();

 public slots:
 	void newFile();
 	void openFile();
-	void openFile(const QString &filename);
 	void saveFile();
 	void saveFileAs();
 	void closeFile();
 	void print() const;
 	void dataModelChanged();
-	void savePdf();
-	void aboutDialog();

 protected:
 	void closeEvent(QCloseEvent *event) override;

 private:
-	void setupUi();
 	void saveFile(const QString &filename);
-	void savePdf(const QString &filename);
 };
--- a/source/mainwindow.ui
+++ b/source/mainwindow.ui
@ -133,18 +133,10 @@
    <addaction name="actionSave_as"/>
    <addaction name="separator"/>
    <addaction name="actionPrint"/>
-    <addaction name="actionExport_PDF"/>
    <addaction name="separator"/>
    <addaction name="actionQuit"/>
   </widget>
-   <widget class="QMenu" name="menuHelp">
-    <property name="title">
-     <string>Help</string>
-    </property>
-    <addaction name="actionAbout"/>
-   </widget>
   <addaction name="menuFile"/>
-   <addaction name="menuHelp"/>
  </widget>
  <widget class="QToolBar" name="toolBar">
   <property name="windowTitle">
@ -236,19 +228,6 @@
    <string>Ctrl+P</string>
   </property>
  </action>
-  <action name="actionExport_PDF">
-   <property name="text">
-    <string>Export PDF</string>
-   </property>
-   <property name="toolTip">
-    <string>Export as PDF file</string>
-   </property>
-  </action>
-  <action name="actionAbout">
-   <property name="text">
-    <string>About</string>
-   </property>
-  </action>
 </widget>
 <customwidgets>
  <customwidget>
--- a/source/version.h.in
+++ b/source/version.h.in
@ -1,4 +0,0 @@
-#pragma once
-
-#define ESGRAF48_VERSION "@PROJECT_VERSION@"
-#define ESGRAF48_DESCRIPTION "@PROJECT_DESCRIPTION@"
--- a/test/Age.cpp
+++ b/test/Age.cpp
@ -1,40 +0,0 @@
-#include <catch2/catch.hpp>
-
-#include "Age.h"
-
-TEST_CASE("default initialization")
-{
-	Age age;
-	REQUIRE(age.years() == 0);
-	REQUIRE(age.months() == 0);
-	REQUIRE(age.toString() == "0;0");
-
-	Age age2;
-	REQUIRE(!(age < age));
-	REQUIRE(!(age < age2));
-}
-
-TEST_CASE("year/month initialization")
-{
-	for (unsigned int year = 0; year <= 100; ++year)
-	{
-		for (unsigned int month = 0; month < 12; ++month)
-		{
-			Age age(year, month);
-
-			REQUIRE(age.years() == year);
-			REQUIRE(age.months() == month);
-		}
-	}
-}
-
-TEST_CASE("age by reference")
-{
-	QDate birth(1970, 1, 1);
-	QDate reference(1980, 1, 1);
-
-	Age age(birth, reference);
-
-	REQUIRE(age.years() == 10);
-	REQUIRE(age.months() == 0);
-}
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@ -1,21 +0,0 @@
-cmake_minimum_required(VERSION 3.5)
-project(run-tests)
-
-find_package(Catch2 REQUIRED)
-
-add_executable(${PROJECT_NAME}
-	main.cpp
-	dummy.cpp
-	Age.cpp
-)
-
-target_link_libraries(${PROJECT_NAME}
-	PRIVATE
-		Catch2::Catch2
-		Age
-)
-
-include(CTest)
-include(Catch)
-catch_discover_tests(${PROJECT_NAME})
-
--- a/test/dummy.cpp
+++ b/test/dummy.cpp
@ -1,7 +0,0 @@
-#include <catch2/catch.hpp>
-
-TEST_CASE("Dummy")
-{
-	REQUIRE(true == true);
-}
-
--- a/test/main.cpp
+++ b/test/main.cpp
@ -1,2 +0,0 @@
-#define CATCH_CONFIG_MAIN
-#include <catch2/catch.hpp>
				`@ -0,0 +1 @@`
				`Subproject commit 59133296a6e5d5017074e036557ebb658e49d435`