GroupBoxCollapser::installIntoGroupBox2 used for beam distr

GUI/Model/Beam/BeamDistributionItem.h

@@ -42,8 +42,6 @@ public:
     SelectionProperty<DistributionItemCatalog>& distributionSelection() { return m_distribution; }
 
     bool expandGroupBox = true;
-    bool isExpandGroupBox() const { return expandGroupBox; }
-    void setExpandGroupBox(bool b) { expandGroupBox = b; }
 
     virtual std::unique_ptr<IDistribution1D> createDistribution1D() const;
 

GUI/View/Instrument/AlphaScanEditor.cpp

@@ -67,10 +67,7 @@ AlphaScanEditor::AlphaScanEditor(QWidget* parent, GrazingScanItem* item, bool al
     hLayout->setAlignment(m_plot, Qt::AlignTop);
     hLayout->addStretch(1);
 
-    auto* collapser = GroupBoxCollapser::installIntoGroupBox(this);
-    collapser->setExpanded(item->isExpandGroupBox());
-    connect(collapser, &GroupBoxCollapser::toggled, this,
-            [item](bool b) { item->setExpandGroupBox(b); });
+    GroupBoxCollapser::installIntoGroupBox(this, item->expandGroupBox);
 
     updatePlot();
 }

GUI/View/Instrument/DistributionEditor.cpp

@@ -176,10 +176,7 @@ DistributionEditor::DistributionEditor(const QString& title,
     hLayout->addWidget(m_plot);
     hLayout->addStretch(1);
 
-    auto* collapser = GroupBoxCollapser::installIntoGroupBox(this);
-    collapser->setExpanded(item->isExpandGroupBox());
-    connect(collapser, &GroupBoxCollapser::toggled, this,
-            [item](bool b) { item->setExpandGroupBox(b); });
+    GroupBoxCollapser::installIntoGroupBox2(this, item->expandGroupBox);
 
     connect(m_selector, &DistributionSelector::distributionChanged, this,
             &DistributionEditor::distributionChanged);