Sketcher: Sketch - extraction of geometry as GeoList with owned memory allocation

=================================================================================

Apart from simplifying code, the allocated memory is not managed by the lifetime of the unique pointer owned by the GeometryFacade, preventing memory leaks.

src/Mod/Sketcher/App/Sketch.cpp

@@ -1425,6 +1425,22 @@ std::vector<Part::Geometry *> Sketch::extractGeometry(bool withConstructionEleme
     return temp;
 }
 
+GeoListFacade Sketch::extractGeoListFacade() const
+{
+    std::vector<GeometryFacadeUniquePtr> temp;
+    temp.reserve(Geoms.size());
+    int internalGeometryCount = 0;
+    for (std::vector<GeoDef>::const_iterator it=Geoms.begin(); it != Geoms.end(); ++it) {
+        auto gf = GeometryFacade::getFacade(it->geo->clone(), true); // GeometryFacade is the owner of this allocation
+        if(!it->external)
+            internalGeometryCount++;
+
+        temp.push_back(std::move(gf));
+    }
+
+    return GeoListFacade::getGeoListModel(std::move(temp), internalGeometryCount);
+}
+
 void Sketch::updateExtension(int geoId, std::unique_ptr<Part::GeometryExtension> && ext)
 {
     geoId = checkGeoId(geoId);

src/Mod/Sketcher/App/Sketch.h

@@ -27,6 +27,7 @@
 #include <App/PropertyFile.h>
 #include <Mod/Part/App/Geometry.h>
 #include <Mod/Part/App/TopoShape.h>
+#include "GeoList.h"
 #include "Constraint.h"
 
 #include "planegcs/GCS.h"
@@ -36,6 +37,7 @@
 namespace Sketcher
 {
 
+
 class SketcherExport Sketch :public Base::Persistence
 {
     TYPESYSTEM_HEADER();
@@ -89,6 +91,8 @@ public:
     std::vector<Part::Geometry *> extractGeometry(bool withConstructionElements=true,
                                                   bool withExternalElements=false) const;
 
+    GeoListFacade extractGeoListFacade() const;
+
     void updateExtension(int geoId, std::unique_ptr<Part::GeometryExtension> && ext);
     /// get the geometry as python objects
     Py::Tuple getPyGeometry(void) const;