Expose onBeforeChange to python document observer

2017-08-15 06:26:26 +02:00
parent e338fe6b70
commit 65d6d5cc33
6 changed files with 42 additions and 0 deletions
--- a/src/App/Document.cpp
+++ b/src/App/Document.cpp
@@ -1140,6 +1140,9 @@ void Document::onChanged(const Property* prop)

 void Document::onBeforeChangeProperty(const TransactionalObject *Who, const Property *What)
 {
+    if(Who->isDerivedFrom(App::DocumentObject::getClassTypeId())
+        signalBeforeChangeObject(*static_cast<App::DocuemntObject*>(Who), *What);
+    
    if (d->activeUndoTransaction && !d->rollback)
        d->activeUndoTransaction->addObjectChange(Who,What);
 }