EditableDatumLabel add 'isInEdit' to check if the label is in edit.

src/Gui/EditableDatumLabel.cpp

@@ -168,6 +168,12 @@ void EditableDatumLabel::stopEdit()
     }
 }
 
+bool EditableDatumLabel::isInEdit()
+{
+    return spinBox;
+}
+
+
 double EditableDatumLabel::getValue()
 {
     return spinBox->rawValue();

src/Gui/EditableDatumLabel.h

@@ -53,6 +53,7 @@ public:
 
     void startEdit(double val, QObject* eventFilteringObj = nullptr);
     void stopEdit();
+    bool isInEdit();
     double getValue();
     void setSpinboxValue(double val, const Base::Unit& unit = Base::Unit::Length);
     void setPlacement(const Base::Placement& plc);