src/Model/Model_AttributeReference.cpp

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