change the RobotUnitPluginWidgetController to sort the list of projects

source/RobotAPI/gui-plugins/RobotUnitPlugin/RobotUnitPluginWidgetController.cpp

@@ -28,6 +28,7 @@
 #include <boost/filesystem.hpp>
 
 #include <QDir>
+#include <QSortFilterProxyModel>
 
 #include <ArmarXCore/core/system/cmake/CMakePackageFinder.h>
 #include <ArmarXCore/core/exceptions/local/ExpressionException.h>
@@ -106,7 +107,7 @@ RobotUnitPluginWidgetController::RobotUnitPluginWidgetController()
         path p = path {homeDir} / ".cmake" / "packages";
         if (is_directory(p))
         {
-            for (const path & entry : boost::make_iterator_range(directory_iterator(p), {}))
+            for (const path& entry : boost::make_iterator_range(directory_iterator(p), {}))
             {
                 const std::string pkg = entry.filename().string();
                 if (CMakePackageFinder {pkg, "", true} .packageFound())
@@ -114,6 +115,14 @@ RobotUnitPluginWidgetController::RobotUnitPluginWidgetController()
                     widget.comboBoxPackage->addItem(QString::fromStdString(pkg));
                 }
             }
+            // for sorting you need the following 4 lines
+            QSortFilterProxyModel* proxy = new QSortFilterProxyModel(widget.comboBoxPackage);
+            proxy->setSourceModel(widget.comboBoxPackage->model());
+            // combo's current model must be reparented,
+            // otherwise QComboBox::setModel() will delete it
+            widget.comboBoxPackage->model()->setParent(proxy);
+            widget.comboBoxPackage->setModel(proxy);
+            widget.comboBoxPackage->model()->sort(0);
         }
     }