Issue #427, 420 - crash during work through external edges.

[modules/shaper.git] / src / Model / Model_AttributeReference.cpp

diff --git a/src/Model/Model_AttributeReference.cpp b/src/Model/Model_AttributeReference.cpp
index 3169bd57a484f157c3807228bf9467893d5b245f..860968cdd14f40f5381cea5a5193c354163104e3 100644 (file)
--- a/src/Model/Model_AttributeReference.cpp
+++ b/src/Model/Model_AttributeReference.cpp
@@ -1,3 +1,5 @@
+// Copyright (C) 2014-20xx CEA/DEN, EDF R&D
+
 // File:        ModelAPI_AttributeReference.cxx
 // Created:     2 Apr 2014
 // Author:      Mikhail PONIKAROV
@@ -7,15 +9,45 @@
 #include "Model_Events.h"
 #include "Model_Data.h"
 #include <ModelAPI_Feature.h>
+#include <ModelAPI_Session.h>
+
+#include <TDataStd_Comment.hxx>
+#include <TDataStd_AsciiString.hxx>
+#include <TDF_Tool.hxx>
 
 using namespace std;
 
 void Model_AttributeReference::setValue(ObjectPtr theObject)
 {
+  if(!theObject)
+    return;
   if (!myIsInitialized || value() != theObject) {
-    boost::shared_ptr<Model_Data> aData = 
-      boost::dynamic_pointer_cast<Model_Data>(theObject->data());
-    myRef->Set(aData->label().Father()); // references to the feature label
+    std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(
+        theObject->data());
+    TDF_Label anObjLab = aData->label().Father(); // object label
+
+    if (owner()->document() == theObject->document()) { // same document, use reference attribute
+
+      std::shared_ptr<Model_Document> aDoc =
+        std::dynamic_pointer_cast<Model_Document>(owner()->document());
+      myRef->Set(anObjLab);  // references to the object label
+       // remove external link attributes (if any)
+      myRef->Label().ForgetAttribute(TDataStd_Comment::GetID());
+      myRef->Label().ForgetAttribute(TDataStd_AsciiString::GetID());
+    } else { // different document: store the document name (comment) and entry (string): external
+      // if these attributes exist, the link is external: keep reference to access the label
+      TDataStd_Comment::Set(myRef->Label(), theObject->document()->id().c_str());
+      TCollection_AsciiString anEntry;
+      TDF_Tool::Entry(anObjLab, anEntry);
+      TDataStd_AsciiString::Set(myRef->Label(), anEntry);
+    }
+    // do it before the transaction finish to make just created/removed objects know dependencies
+    // and reference from composite feature is removed automatically
+    FeaturePtr anOwnerFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(owner());
+    if (anOwnerFeature.get()) {
+      aData->addBackReference(anOwnerFeature, id(), false);
+    }
+
     owner()->data()->sendAttributeUpdated(this);
   }
 }
@@ -23,11 +55,30 @@ void Model_AttributeReference::setValue(ObjectPtr theObject)
 ObjectPtr Model_AttributeReference::value()
 {
   if (myIsInitialized) {
-    boost::shared_ptr<Model_Document> aDoc = 
-      boost::dynamic_pointer_cast<Model_Document>(owner()->document());
-    if (aDoc) {
-      TDF_Label aRefLab = myRef->Get();
-      return aDoc->object(aRefLab);
+    Handle(TDataStd_Comment) aDocID;
+    if (myRef->Label().FindAttribute(TDataStd_Comment::GetID(), aDocID)) { // external ref
+      DocumentPtr aRefDoc =
+        ModelAPI_Session::get()->document(TCollection_AsciiString(aDocID->Get()).ToCString());
+      if (aRefDoc) {
+        Handle(TDataStd_AsciiString) anEntry;
+        if (myRef->Label().FindAttribute(TDataStd_AsciiString::GetID(), anEntry)) {
+          std::shared_ptr<Model_Document> aDR = std::dynamic_pointer_cast<Model_Document>(aRefDoc);
+          TDF_Label aRefLab;
+          TDF_Tool::Label(aDR->featuresLabel().Data(), anEntry->Get().ToCString(), aRefLab);
+          if (!aRefLab.IsNull()) {
+            return aDR->object(aRefLab);
+          }
+        }
+      }
+    } else { // internal ref
+      std::shared_ptr<Model_Document> aDoc = std::dynamic_pointer_cast<Model_Document>(
+          owner()->document());
+      if (aDoc) {
+        TDF_Label aRefLab = myRef->Get();
+        if (!aRefLab.IsNull()) {  // it may happen with old document, issue #285
+          return aDoc->object(aRefLab);
+        }
+      }
     }
   }
   // not initialized
@@ -37,6 +88,28 @@ ObjectPtr Model_AttributeReference::value()
 Model_AttributeReference::Model_AttributeReference(TDF_Label& theLabel)
 {
   myIsInitialized = theLabel.FindAttribute(TDF_Reference::GetID(), myRef) == Standard_True;
-  if (!myIsInitialized)
-    myRef = TDF_Reference::Set(theLabel, theLabel); // not initialized references to itself
+  if (!myIsInitialized) {
+    myRef = TDF_Reference::Set(theLabel, theLabel);  // not initialized references to itself
+  } else {
+    if (owner()) {
+      std::shared_ptr<Model_Document> aDoc =
+        std::dynamic_pointer_cast<Model_Document>(owner()->document());
+    }
+  }
+}
+
+void Model_AttributeReference::setObject(const std::shared_ptr<ModelAPI_Object>& theObject)
+{
+  if (owner() != theObject) {
+    ModelAPI_AttributeReference::setObject(theObject);
+    std::shared_ptr<Model_Document> aDoc =
+      std::dynamic_pointer_cast<Model_Document>(owner()->document());
+  }
+}
+
+Model_AttributeReference::~Model_AttributeReference()
+{
+  std::shared_ptr<Model_Document> aDoc =
+    std::dynamic_pointer_cast<Model_Document>(owner()->document());
+  TDF_Label aLab = myRef->Get();
 }