Added draft of optionsgroup folder and some initial tests.

src/CMakeLists.txt

@@ -194,6 +194,7 @@ set(UI_TEST_SOURCES
     ${GUI_TESTDIR}/test_field_point3.cpp
     ${GUI_TESTDIR}/test_field_colorpicker.cpp
     ${GUI_TESTDIR}/test_field_slider.cpp
+    ${GUI_TESTDIR}/test_optionsgroup.cpp
     ${GUI_TESTDIR}/test_misc_ui.cpp
 )
 

src/GUI/OptionsGroup.hpp

@@ -0,0 +1,70 @@
+#include "ConfigBase.hpp"
+#include "Config.hpp"
+#include "OptionsGroup/Field.hpp"
+#include <string>
+#include <map>
+#include <memory>
+
+namespace Slic3r { namespace GUI {
+
+class Option;
+class Line;
+class OptionsGroup;
+class ConfigOptionsGroup;
+
+/// Class to 
+class Option {
+public:
+    /// TODO: Constructor needs to include a default value
+    /// Reference to the configuration store. 
+    ConfigOptionDef& desc;
+    Option(const ConfigOptionType& _type, const ConfigOption& _def) : desc(this->_desc) {
+        desc.type = _type;
+        // set _default to whatever it needs to be based on _type
+        
+        
+        // set desc default value to our stored one.
+        desc.default_value = _default;
+    }
+
+    // move constructor, owns the Config item.
+    Option(ConfigOptionDef&& remote) : desc(this->_desc), _desc(std::move(remote)) { }
+
+    /// Destructor to take care of the owned default value.
+    ~Option() {
+        if (_default != nullptr) delete _default; 
+        _default = nullptr;
+    }
+
+    
+    /// TODO: Represent a sidebar widget
+    void* side_widget {nullptr};
+
+private:
+    /// Actual configuration store. 
+    /// Holds important information related to this configuration item.
+    ConfigOptionDef _desc;
+
+    /// default value, passed into _desc on construction.
+    /// Owns the data.
+    ConfigOption* _default {nullptr};
+};
+
+class OptionsGroup {
+public:
+    OptionsGroup() {}
+    ConfigOption* get_field(const t_config_option_key& opt_id) { return nullptr; }
+protected:
+    std::map<t_config_option_key, std::unique_ptr<Option>> _options;
+    std::map<t_config_option_key, std::unique_ptr<UI_Field>> _fields;
+};
+
+class ConfigOptionsGroup : public OptionsGroup {
+public:
+
+    std::shared_ptr<Slic3r::Config> config;
+protected:
+
+};
+
+}} // namespace Slic3r::GUI

src/test/GUI/test_optionsgroup.cpp

@@ -0,0 +1,29 @@
+#include <catch.hpp>
+#ifndef WX_PRECOMP
+    #include "wx/app.h"
+    #include "wx/sizer.h"
+    #include "wx/uiaction.h"
+#endif // WX_PRECOMP
+#include <iostream>
+
+#include "OptionsGroup.hpp"
+#include "ConfigBase.hpp"
+#include "Config.hpp"
+
+using namespace Slic3r::GUI;
+
+SCENARIO("OptionsGroup: Construction.") {
+}
+SCENARIO("ConfigOptionsGroup: Factory methods") {
+    GIVEN("A default Slic3r config") {
+        OptionsGroup optgroup;
+        WHEN("add_single_option is called for avoid_crossing_perimeters") {
+            THEN("a UI_Checkbox is added to the field map") {
+                REQUIRE(optgroup.get_field("avoid_crossing_perimeters") != nullptr);
+            }
+            THEN("a ConfigOptionBool is added to the option map") {
+                REQUIRE(optgroup.get_field("avoid_crossing_perimeters") != nullptr);
+            }
+        }
+    }
+}