fix #1338

git-svn-id: http://svn.osgeo.org/qgis/trunk@9450 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: jef

src/app/qgsattributedialog.cpp

@@ -328,11 +328,13 @@ void QgsAttributeDialog::accept()
     QString myFieldName = theField.name();
     bool myFlag = false;
     QString myFieldValue;
+    bool modified = true;
 
     QLineEdit *le = dynamic_cast<QLineEdit *>( mpWidgets.value( myIndex ) );
     if ( le )
     {
       myFieldValue = le->text();
+      modified = le->isModified();
     }
 
     QComboBox *cb = dynamic_cast<QComboBox *>( mpWidgets.value( myIndex ) );
@@ -383,10 +385,14 @@ void QgsAttributeDialog::accept()
         {
           mpFeature->changeAttribute( it.key(), QVariant( myIntValue ) );
         }
-        else
+        else if ( modified )
         {
           mpFeature->changeAttribute( it.key(), QVariant( QString::null ) );
         }
+        else
+        {
+          mpFeature->changeAttribute( it.key(), myFieldValue );
+        }
       }
       break;
       case QVariant::Double:
@@ -396,10 +402,14 @@ void QgsAttributeDialog::accept()
         {
           mpFeature->changeAttribute( it.key(), QVariant( myDblValue ) );
         }
-        else
+        else if ( modified )
         {
           mpFeature->changeAttribute( it.key(), QVariant( QString::null ) );
         }
+        else
+        {
+          mpFeature->changeAttribute( it.key(), myFieldValue );
+        }
       }
       break;
       default: //string