Document/PropertyExpressionEngine: Added onDocumentRestored function, to update internals of PropertyExpressionEngine after loading a document from disk.

src/App/PropertyExpressionEngine.h

@@ -44,7 +44,8 @@ class DocumentObjectExecReturn;
 class ObjectIdentifier;
 class Expression;
 
-class AppExport PropertyExpressionEngine : public App::Property
+
+class AppExport PropertyExpressionEngine : public App::Property, private App::AtomicPropertyChangeInterface<PropertyExpressionEngine>
 {
     TYPESYSTEM_HEADER();
 public:
@@ -124,6 +125,8 @@ public:
     ///signal called when a expression was changed 
     boost::signal<void (const App::ObjectIdentifier &)> expressionChanged; 
 
+    void onDocumentRestored();
+
     /* Python interface */
     PyObject *getPyObject(void);
     void setPyObject(PyObject *);
@@ -149,6 +152,10 @@ private:
 
     ValidatorFunc validator; /**< Valdiator functor */
 
+    ExpressionMap restoredExpressions; /**< Expressions are read from file to this map first before they are validated and inserted into the actual map */
+
+    friend class AtomicPropertyChange;
+
 };
 
 }