X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=src%2FModel%2FModel_Data.cpp;h=e3020d992e929c8f6d9d7577cf804bedec53809f;hb=refs%2Ftags%2FV_1.2.1;hp=b6c27518e4fe1a9bc8c84d4bfc516a418d769c34;hpb=5fb260b84b7e7c7a352cacb5a72ada3b235d1175;p=modules%2Fshaper.git

diff --git a/src/Model/Model_Data.cpp b/src/Model/Model_Data.cpp
index b6c27518e..e3020d992 100644
--- a/src/Model/Model_Data.cpp
+++ b/src/Model/Model_Data.cpp
@@ -45,6 +45,9 @@ static const int kFlagInHistory = 0;
 //                             1 - is displayed or not
 static const int kFlagDisplayed = 1;
 
+// invalid data
+const static std::shared_ptr<ModelAPI_Data> kInvalid(new Model_Data());
+
 Model_Data::Model_Data() : mySendAttributeUpdated(true)
 {
 }
@@ -306,7 +309,10 @@ void Model_Data::addBackReference(FeaturePtr theFeature, std::string theAttrID,
       ModelAPI_Session::get()->validators()->isConcealed(theFeature->getKind(), theAttrID)) {
     std::shared_ptr<ModelAPI_Result> aRes = 
       std::dynamic_pointer_cast<ModelAPI_Result>(myObject);
-    if (aRes) {
+    // the second condition is for history upper than concealment causer, so the feature result may
+    // be displayed and previewed; also for avoiding of quick show/hide on history
+    // moving deep down
+    if (aRes && !theFeature->isDisabled()) {
       aRes->setIsConcealed(true);
     }
   }
@@ -407,3 +413,13 @@ void Model_Data::setDisplayed(const bool theDisplay)
     aECreator->sendUpdated(myObject, EVENT_DISP);
   }
 }
+
+std::shared_ptr<ModelAPI_Data> Model_Data::invalidPtr()
+{
+  return kInvalid;
+}
+
+std::shared_ptr<ModelAPI_Data> Model_Data::invalidData()
+{
+  return kInvalid;
+}