use groupbox collapser in simulation view

GUI/Views/SimulationView.cpp

@@ -25,6 +25,7 @@
 #include "GUI/Models/SampleModel.h"
 #include "GUI/Models/SampleValidator.h"
 #include "GUI/Models/SimulationOptionsItem.h"
+#include "GUI/Views/CommonWidgets/GroupBoxCollapser.h"
 #include "GUI/Views/SimulationWidgets/PythonScriptWidget.h"
 #include "GUI/mainwindow/mainwindow.h"
 #include "GUI/mainwindow/projectdocument.h"
@@ -39,6 +40,12 @@ SimulationView::SimulationView(MainWindow* mainWindow)
 {
     m_ui->setupUi(this);
 
+    setAttribute(Qt::WA_StyledBackground, true);
+
+    GroupBoxCollapser::installIntoGroupBox(m_ui->groupBox_3);
+    GroupBoxCollapser::installIntoGroupBox(m_ui->groupBox_2);
+    GroupBoxCollapser::installIntoGroupBox(m_ui->groupBox);
+
     auto buttonGroup = new QButtonGroup(this);
     buttonGroup->addButton(m_ui->runPolicyImmediatelyRadio);
     buttonGroup->addButton(m_ui->runPolicyBackgroundRadio);