Gui: add new PrefCheckableGroupBox widget

src/Gui/PrefWidgets.cpp

@@ -864,4 +864,37 @@ void PrefFontBox::savePreferences()
   getWindowParameter()->SetASCII(entryName(), currName.toUtf8());
 }
 
+// --------------------------------------------------------------------
+
+PrefCheckableGroupBox::PrefCheckableGroupBox(QWidget* parent)
+    : QGroupBox(parent), PrefWidget()
+{
+}
+
+PrefCheckableGroupBox::~PrefCheckableGroupBox() = default;
+
+void PrefCheckableGroupBox::restorePreferences()
+{
+    if (getWindowParameter().isNull() || entryName().isEmpty()) {
+        failedToRestore(objectName());
+        return;
+    }
+
+    // Default value is the current state of the checkbox (usually from .ui on first load)
+    bool defaultValueInUi = isChecked();
+    bool actualValue = getWindowParameter()->GetBool(entryName(), defaultValueInUi);
+    setChecked(actualValue);
+}
+
+void PrefCheckableGroupBox::savePreferences()
+{
+    if (getWindowParameter().isNull() || entryName().isEmpty())
+    {
+        failedToSave(objectName());
+        return;
+    }
+
+    getWindowParameter()->SetBool(entryName(), isChecked());
+}
+
 #include "moc_PrefWidgets.cpp"