src/Model/Model_AttributeReference.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:        ModelAPI_AttributeReference.cxx
   4 // Created:     2 Apr 2014
   5 // Author:      Mikhail PONIKAROV
   6
   7 #include "Model_AttributeReference.h"
   8 #include "Model_Application.h"
   9 #include "Model_Events.h"
  10 #include "Model_Data.h"
  11 #include <ModelAPI_Feature.h>
  12 #include <ModelAPI_Session.h>
  13
  14 #include <TDataStd_Comment.hxx>
  15 #include <TDataStd_AsciiString.hxx>
  16 #include <TDF_Tool.hxx>
  17
  18 using namespace std;
  19
  20 void Model_AttributeReference::setValue(ObjectPtr theObject)
  21 {
  22   if(!theObject)
  23     return;
  24   if (!myIsInitialized || value() != theObject) {
  25     std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(
  26         theObject->data());
  27     TDF_Label anObjLab = aData->label().Father(); // object label
  28
  29     if (owner()->document() == theObject->document()) { // same document, use reference attribute
  30
  31       std::shared_ptr<Model_Document> aDoc =
  32         std::dynamic_pointer_cast<Model_Document>(owner()->document());
  33       myRef->Set(anObjLab);  // references to the object label
  34        // remove external link attributes (if any)
  35       myRef->Label().ForgetAttribute(TDataStd_Comment::GetID());
  36       myRef->Label().ForgetAttribute(TDataStd_AsciiString::GetID());
  37     } else { // different document: store the document name (comment) and entry (string): external
  38       // if these attributes exist, the link is external: keep reference to access the label
  39       TDataStd_Comment::Set(myRef->Label(), theObject->document()->id().c_str());
  40       TCollection_AsciiString anEntry;
  41       TDF_Tool::Entry(anObjLab, anEntry);
  42       TDataStd_AsciiString::Set(myRef->Label(), anEntry);
  43     }
  44     // do it before the transaction finish to make just created/removed objects know dependencies
  45     // and reference from composite feature is removed automatically
  46     FeaturePtr anOwnerFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(owner());
  47     if (anOwnerFeature.get()) {
  48       aData->addBackReference(anOwnerFeature, id(), false);
  49     }
  50
  51     owner()->data()->sendAttributeUpdated(this);
  52   }
  53 }
  54
  55 ObjectPtr Model_AttributeReference::value()
  56 {
  57   if (myIsInitialized) {
  58     Handle(TDataStd_Comment) aDocID;
  59     if (myRef->Label().FindAttribute(TDataStd_Comment::GetID(), aDocID)) { // external ref
  60       DocumentPtr aRefDoc =
  61         ModelAPI_Session::get()->document(TCollection_AsciiString(aDocID->Get()).ToCString());
  62       if (aRefDoc) {
  63         Handle(TDataStd_AsciiString) anEntry;
  64         if (myRef->Label().FindAttribute(TDataStd_AsciiString::GetID(), anEntry)) {
  65           std::shared_ptr<Model_Document> aDR = std::dynamic_pointer_cast<Model_Document>(aRefDoc);
  66           TDF_Label aRefLab;
  67           TDF_Tool::Label(aDR->featuresLabel().Data(), anEntry->Get().ToCString(), aRefLab);
  68           if (!aRefLab.IsNull()) {
  69             return aDR->object(aRefLab);
  70           }
  71         }
  72       }
  73     } else { // internal ref
  74       std::shared_ptr<Model_Document> aDoc = std::dynamic_pointer_cast<Model_Document>(
  75           owner()->document());
  76       if (aDoc) {
  77         TDF_Label aRefLab = myRef->Get();
  78         if (!aRefLab.IsNull()) {  // it may happen with old document, issue #285
  79           return aDoc->object(aRefLab);
  80         }
  81       }
  82     }
  83   }
  84   // not initialized
  85   return FeaturePtr();
  86 }
  87
  88 Model_AttributeReference::Model_AttributeReference(TDF_Label& theLabel)
  89 {
  90   myIsInitialized = theLabel.FindAttribute(TDF_Reference::GetID(), myRef) == Standard_True;
  91   if (!myIsInitialized) {
  92     myRef = TDF_Reference::Set(theLabel, theLabel);  // not initialized references to itself
  93   } else {
  94     if (owner()) {
  95       std::shared_ptr<Model_Document> aDoc =
  96         std::dynamic_pointer_cast<Model_Document>(owner()->document());
  97     }
  98   }
  99 }
 100
 101 void Model_AttributeReference::setObject(const std::shared_ptr<ModelAPI_Object>& theObject)
 102 {
 103   if (owner() != theObject) {
 104     ModelAPI_AttributeReference::setObject(theObject);
 105     std::shared_ptr<Model_Document> aDoc =
 106       std::dynamic_pointer_cast<Model_Document>(owner()->document());
 107   }
 108 }
 109
 110 Model_AttributeReference::~Model_AttributeReference()
 111 {
 112   std::shared_ptr<Model_Document> aDoc =
 113     std::dynamic_pointer_cast<Model_Document>(owner()->document());
 114   TDF_Label aLab = myRef->Get();
 115 }