src/Model/Model_Objects.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:        Model_Objects.cxx
   4 // Created:     15 May 2015
   5 // Author:      Mikhail PONIKAROV
   6
   7 #include <Model_Objects.h>
   8 #include <Model_Data.h>
   9 #include <Model_Document.h>
  10 #include <Model_Events.h>
  11 #include <Model_Session.h>
  12 #include <Model_ResultPart.h>
  13 #include <Model_ResultConstruction.h>
  14 #include <Model_ResultBody.h>
  15 #include <Model_ResultGroup.h>
  16 #include <Model_ResultParameter.h>
  17 #include <ModelAPI_Validator.h>
  18 #include <ModelAPI_CompositeFeature.h>
  19
  20 #include <Events_Loop.h>
  21 #include <Events_Error.h>
  22
  23 #include <TDataStd_Integer.hxx>
  24 #include <TDataStd_Comment.hxx>
  25 #include <TDF_ChildIDIterator.hxx>
  26 #include <TDataStd_ReferenceArray.hxx>
  27 #include <TDataStd_HLabelArray1.hxx>
  28 #include <TDataStd_Name.hxx>
  29 #include <TDF_Reference.hxx>
  30 #include <TDF_ChildIDIterator.hxx>
  31 #include <TDF_LabelMapHasher.hxx>
  32
  33 static const int TAG_OBJECTS = 2;  // tag of the objects sub-tree (features, results)
  34
  35 // feature sub-labels
  36 static const int TAG_FEATURE_ARGUMENTS = 1;  ///< where the arguments are located
  37 static const int TAG_FEATURE_RESULTS = 2;  ///< where the results are located
  38
  39 ///
  40 /// 0:1:2 - where features are located
  41 /// 0:1:2:N:1 - data of the feature N
  42 /// 0:1:2:N:2:K:1 - data of the K result of the feature N
  43
  44 Model_Objects::Model_Objects(TDF_Label theMainLab) : myMain(theMainLab)
  45 {
  46 }
  47
  48 void Model_Objects::setOwner(DocumentPtr theDoc)
  49 {
  50   myDoc = theDoc;
  51   // update all fields and recreate features and result objects if needed
  52   synchronizeFeatures(false, true, true);
  53   myHistory.clear();
  54 }
  55
  56 Model_Objects::~Model_Objects()
  57 {
  58   // delete all features of this document
  59   Events_Loop* aLoop = Events_Loop::loop();
  60   NCollection_DataMap<TDF_Label, FeaturePtr>::Iterator aFeaturesIter(myFeatures);
  61   for(; aFeaturesIter.More(); aFeaturesIter.Next()) {
  62     FeaturePtr aFeature = aFeaturesIter.Value();
  63     static Events_ID EVENT_DISP = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
  64     ModelAPI_EventCreator::get()->sendDeleted(myDoc, ModelAPI_Feature::group());
  65     ModelAPI_EventCreator::get()->sendUpdated(aFeature, EVENT_DISP);
  66     aFeature->eraseResults();
  67     aFeature->erase();
  68   }
  69   myFeatures.Clear();
  70   aLoop->flush(Events_Loop::eventByName(EVENT_OBJECT_DELETED));
  71   aLoop->flush(Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY));
  72
  73 }
  74
  75 /// Appends to the array of references a new referenced label
  76 static void AddToRefArray(TDF_Label& theArrayLab, TDF_Label& theReferenced, TDF_Label& thePrevLab)
  77 {
  78   Handle(TDataStd_ReferenceArray) aRefs;
  79   if (!theArrayLab.FindAttribute(TDataStd_ReferenceArray::GetID(), aRefs)) {
  80     aRefs = TDataStd_ReferenceArray::Set(theArrayLab, 0, 0);
  81     aRefs->SetValue(0, theReferenced);
  82   } else {  // extend array by one more element
  83     Handle(TDataStd_HLabelArray1) aNewArray = new TDataStd_HLabelArray1(aRefs->Lower(),
  84                                                                         aRefs->Upper() + 1);
  85     int aPassedPrev = 0; // prev feature is found and passed
  86     if (thePrevLab.IsNull()) { // null means that inserted feature must be the first
  87       aNewArray->SetValue(aRefs->Lower(), theReferenced);
  88       aPassedPrev = 1;
  89     }
  90     for (int a = aRefs->Lower(); a <= aRefs->Upper(); a++) {
  91       aNewArray->SetValue(a + aPassedPrev, aRefs->Value(a));
  92       if (!aPassedPrev && aRefs->Value(a).IsEqual(thePrevLab)) {
  93         aPassedPrev = 1;
  94         aNewArray->SetValue(a + 1, theReferenced);
  95       }
  96     }
  97     if (!aPassedPrev) // not found: unknown situation
  98       aNewArray->SetValue(aRefs->Upper() + 1, theReferenced);
  99     aRefs->SetInternalArray(aNewArray);
 100   }
 101 }
 102
 103 void Model_Objects::addFeature(FeaturePtr theFeature, const FeaturePtr theAfterThis)
 104 {
 105   if (!theFeature->isAction()) {  // do not add action to the data model
 106     TDF_Label aFeaturesLab = featuresLabel();
 107     TDF_Label aFeatureLab = aFeaturesLab.NewChild();
 108     initData(theFeature, aFeatureLab, TAG_FEATURE_ARGUMENTS);
 109     // keep the feature ID to restore document later correctly
 110     TDataStd_Comment::Set(aFeatureLab, theFeature->getKind().c_str());
 111     myFeatures.Bind(aFeatureLab, theFeature);
 112     // store feature in the features array
 113     TDF_Label aPrevFeateureLab;
 114     if (theAfterThis.get()) { // searching for the previous feature label
 115       std::shared_ptr<Model_Data> aPrevData =
 116         std::dynamic_pointer_cast<Model_Data>(theAfterThis->data());
 117       if (aPrevData.get()) {
 118         aPrevFeateureLab = aPrevData->label().Father();
 119       }
 120     }
 121     AddToRefArray(aFeaturesLab, aFeatureLab, aPrevFeateureLab);
 122     // event: feature is added
 123     static Events_ID anEvent = Events_Loop::eventByName(EVENT_OBJECT_CREATED);
 124     ModelAPI_EventCreator::get()->sendUpdated(theFeature, anEvent);
 125     theFeature->setDisabled(false); // by default created feature is enabled
 126     updateHistory(ModelAPI_Feature::group());
 127   }
 128 }
 129
 130 /// Appends to the array of references a new referenced label.
 131 /// If theIndex is not -1, removes element at this index, not theReferenced.
 132 /// \returns the index of removed element
 133 static int RemoveFromRefArray(TDF_Label theArrayLab, TDF_Label theReferenced,
 134   const int theIndex = -1)
 135 {
 136   int aResult = -1;  // no returned
 137   Handle(TDataStd_ReferenceArray) aRefs;
 138   if (theArrayLab.FindAttribute(TDataStd_ReferenceArray::GetID(), aRefs)) {
 139     if (aRefs->Length() == 1) {  // just erase an array
 140       if ((theIndex == -1 && aRefs->Value(0) == theReferenced) || theIndex == 0) {
 141         theArrayLab.ForgetAttribute(TDataStd_ReferenceArray::GetID());
 142       }
 143       aResult = 0;
 144     } else {  // reduce the array
 145       Handle(TDataStd_HLabelArray1) aNewArray = new TDataStd_HLabelArray1(aRefs->Lower(),
 146                                                                           aRefs->Upper() - 1);
 147       int aCount = aRefs->Lower();
 148       for (int a = aCount; a <= aRefs->Upper(); a++, aCount++) {
 149         if ((theIndex == -1 && aRefs->Value(a) == theReferenced) || theIndex == a) {
 150           aCount--;
 151           aResult = a;
 152         } else {
 153           aNewArray->SetValue(aCount, aRefs->Value(a));
 154         }
 155       }
 156       aRefs->SetInternalArray(aNewArray);
 157     }
 158   }
 159   return aResult;
 160 }
 161
 162 void Model_Objects::refsToFeature(FeaturePtr theFeature,
 163   std::set<std::shared_ptr<ModelAPI_Feature> >& theRefs, const bool isSendError)
 164 {
 165   // check the feature: it must have no depended objects on it
 166   // the dependencies can be in the feature results
 167   std::list<ResultPtr>::const_iterator aResIter = theFeature->results().cbegin();
 168   for(; aResIter != theFeature->results().cend(); aResIter++) {
 169     ResultPtr aResult = (*aResIter);
 170     std::shared_ptr<Model_Data> aData =
 171       std::dynamic_pointer_cast<Model_Data>(aResult->data());
 172     if (aData.get() != NULL) {
 173       const std::set<AttributePtr>& aRefs = aData->refsToMe();
 174       std::set<AttributePtr>::const_iterator aRefIt = aRefs.begin(), aRefLast = aRefs.end();
 175       for(; aRefIt != aRefLast; aRefIt++) {
 176         FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRefIt)->owner());
 177         if (aFeature.get() != NULL)
 178           theRefs.insert(aFeature);
 179       }
 180     }
 181   }
 182   // the dependencies can be in the feature itself
 183   std::shared_ptr<Model_Data> aData =
 184       std::dynamic_pointer_cast<Model_Data>(theFeature->data());
 185   if (aData && !aData->refsToMe().empty()) {
 186     const std::set<AttributePtr>& aRefs = aData->refsToMe();
 187     std::set<AttributePtr>::const_iterator aRefIt = aRefs.begin(), aRefLast = aRefs.end();
 188     for(; aRefIt != aRefLast; aRefIt++) {
 189       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRefIt)->owner());
 190       if (aFeature.get() != NULL)
 191         theRefs.insert(aFeature);
 192     }
 193   }
 194
 195   if (!theRefs.empty() && isSendError) {
 196     Events_Error::send(
 197       "Feature '" + theFeature->data()->name() + "' is used and can not be deleted");
 198   }
 199 }
 200
 201 void Model_Objects::removeFeature(FeaturePtr theFeature)
 202 {
 203   std::shared_ptr<Model_Data> aData = std::static_pointer_cast<Model_Data>(theFeature->data());
 204   if (aData) {
 205     TDF_Label aFeatureLabel = aData->label().Father();
 206     if (myFeatures.IsBound(aFeatureLabel))
 207       myFeatures.UnBind(aFeatureLabel);
 208     else
 209       return;  // not found feature => do not remove
 210
 211     clearHistory(theFeature);
 212     // checking that the sub-element of composite feature is removed: if yes, inform the owner
 213     std::set<std::shared_ptr<ModelAPI_Feature> > aRefs;
 214     refsToFeature(theFeature, aRefs, false);
 215     std::set<std::shared_ptr<ModelAPI_Feature> >::iterator aRefIter = aRefs.begin();
 216     for(; aRefIter != aRefs.end(); aRefIter++) {
 217       std::shared_ptr<ModelAPI_CompositeFeature> aComposite =
 218         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(*aRefIter);
 219       if (aComposite.get()) {
 220         aComposite->removeFeature(theFeature);
 221       }
 222     }
 223     // erase fields
 224     theFeature->erase();
 225     static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 226     ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
 227     // erase all attributes under the label of feature
 228     aFeatureLabel.ForgetAllAttributes();
 229     // remove it from the references array
 230     if (theFeature->isInHistory()) {
 231       RemoveFromRefArray(featuresLabel(), aFeatureLabel);
 232     }
 233     // event: feature is deleted
 234     ModelAPI_EventCreator::get()->sendDeleted(theFeature->document(), ModelAPI_Feature::group());
 235     // the redisplay signal should be flushed in order to erase the feature presentation in the viewer
 236     Events_Loop::loop()->flush(EVENT_DISP);
 237     updateHistory(ModelAPI_Feature::group());
 238   }
 239 }
 240
 241 void Model_Objects::clearHistory(ObjectPtr theObj)
 242 {
 243   if (theObj) {
 244     const std::string aGroup = theObj->groupName();
 245     std::map<std::string, std::vector<ObjectPtr> >::iterator aHIter = myHistory.find(aGroup);
 246     if (aHIter != myHistory.end())
 247       myHistory.erase(aHIter); // erase from map => this means that it is not synchronized
 248     if (theObj->groupName() == ModelAPI_Feature::group()) { // clear results group of the feature
 249       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theObj);
 250       if (aFeature->firstResult().get())
 251         clearHistory(aFeature->firstResult());
 252     }
 253   }
 254 }
 255
 256 void Model_Objects::createHistory(const std::string& theGroupID)
 257 {
 258   std::map<std::string, std::vector<ObjectPtr> >::iterator aHIter = myHistory.find(theGroupID);
 259   if (aHIter == myHistory.end()) {
 260     myHistory[theGroupID] = std::vector<ObjectPtr>();
 261     std::vector<ObjectPtr>& aResult = myHistory[theGroupID];
 262     // iterate the array of references and get feature by feature from the array
 263     bool isFeature = theGroupID == ModelAPI_Feature::group();
 264     Handle(TDataStd_ReferenceArray) aRefs;
 265     if (featuresLabel().FindAttribute(TDataStd_ReferenceArray::GetID(), aRefs)) {
 266       for(int a = aRefs->Lower(); a <= aRefs->Upper(); a++) {
 267         FeaturePtr aFeature = feature(aRefs->Value(a));
 268         if (aFeature.get()) {
 269           if (isFeature) { // here may be also disabled features
 270             if (aFeature->isInHistory()) {
 271               aResult.push_back(aFeature);
 272             }
 273           } else if (!aFeature->isDisabled()) { // iterate all results of not-disabled feature
 274             const std::list<std::shared_ptr<ModelAPI_Result> >& aResults = aFeature->results();
 275             std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aRIter = aResults.begin();
 276             for (; aRIter != aResults.cend(); aRIter++) {
 277               ResultPtr aRes = *aRIter;
 278               if (aRes->groupName() != theGroupID) break; // feature have only same group results
 279               if (!aRes->isDisabled() && aRes->isInHistory() && !aRes->isConcealed()) {
 280                 aResult.push_back(*aRIter);
 281               }
 282             }
 283           }
 284         }
 285       }
 286     }
 287   }
 288 }
 289
 290 void Model_Objects::updateHistory(const std::shared_ptr<ModelAPI_Object> theObject)
 291 {
 292   clearHistory(theObject);
 293 }
 294
 295 void Model_Objects::updateHistory(const std::string theGroup)
 296 {
 297   std::map<std::string, std::vector<ObjectPtr> >::iterator aHIter = myHistory.find(theGroup);
 298   if (aHIter != myHistory.end())
 299     myHistory.erase(aHIter); // erase from map => this means that it is not synchronized
 300 }
 301
 302 FeaturePtr Model_Objects::feature(TDF_Label& theLabel) const
 303 {
 304   if (myFeatures.IsBound(theLabel))
 305     return myFeatures.Find(theLabel);
 306   return FeaturePtr();  // not found
 307 }
 308
 309 ObjectPtr Model_Objects::object(TDF_Label theLabel)
 310 {
 311   // try feature by label
 312   FeaturePtr aFeature = feature(theLabel);
 313   if (aFeature)
 314     return feature(theLabel);
 315   TDF_Label aFeatureLabel = theLabel.Father().Father();  // let's suppose it is result
 316   aFeature = feature(aFeatureLabel);
 317   if (aFeature) {
 318     const std::list<std::shared_ptr<ModelAPI_Result> >& aResults = aFeature->results();
 319     std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aRIter = aResults.cbegin();
 320     for (; aRIter != aResults.cend(); aRIter++) {
 321       std::shared_ptr<Model_Data> aResData = std::dynamic_pointer_cast<Model_Data>(
 322           (*aRIter)->data());
 323       if (aResData->label().Father().IsEqual(theLabel))
 324         return *aRIter;
 325     }
 326   }
 327   return FeaturePtr();  // not found
 328 }
 329
 330 ObjectPtr Model_Objects::object(const std::string& theGroupID, const int theIndex)
 331 {
 332   createHistory(theGroupID);
 333   return myHistory[theGroupID][theIndex];
 334 }
 335
 336 std::shared_ptr<ModelAPI_Object> Model_Objects::objectByName(
 337     const std::string& theGroupID, const std::string& theName)
 338 {
 339   createHistory(theGroupID);
 340   std::vector<ObjectPtr>& allObjs = myHistory[theGroupID];
 341   std::vector<ObjectPtr>::iterator anObjIter = allObjs.begin();
 342   for(; anObjIter != allObjs.end(); anObjIter++) {
 343     if ((*anObjIter)->data()->name() == theName)
 344       return *anObjIter;
 345   }
 346   // not found
 347   return ObjectPtr();
 348 }
 349
 350 const int Model_Objects::index(std::shared_ptr<ModelAPI_Object> theObject)
 351 {
 352   std::string aGroup = theObject->groupName();
 353   createHistory(aGroup);
 354   std::vector<ObjectPtr>& allObjs = myHistory[aGroup];
 355   std::vector<ObjectPtr>::iterator anObjIter = allObjs.begin(); // iterate to search object
 356   for(int anIndex = 0; anObjIter != allObjs.end(); anObjIter++, anIndex++) {
 357     if ((*anObjIter) == theObject)
 358       return anIndex;
 359   }
 360   // not found
 361   return -1;
 362 }
 363
 364 int Model_Objects::size(const std::string& theGroupID)
 365 {
 366   createHistory(theGroupID);
 367   return myHistory[theGroupID].size();
 368 }
 369
 370 void Model_Objects::allResults(const std::string& theGroupID, std::list<ResultPtr>& theResults)
 371 {
 372   // iterate the array of references and get feature by feature from the array
 373   Handle(TDataStd_ReferenceArray) aRefs;
 374   if (featuresLabel().FindAttribute(TDataStd_ReferenceArray::GetID(), aRefs)) {
 375     for(int a = aRefs->Lower(); a <= aRefs->Upper(); a++) {
 376       FeaturePtr aFeature = feature(aRefs->Value(a));
 377       if (aFeature.get()) {
 378         const std::list<std::shared_ptr<ModelAPI_Result> >& aResults = aFeature->results();
 379         std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aRIter = aResults.begin();
 380         for (; aRIter != aResults.cend(); aRIter++) {
 381           ResultPtr aRes = *aRIter;
 382           if (aRes->groupName() != theGroupID) break; // feature have only same group results
 383           if (aRes->isInHistory() && !aRes->isConcealed()) {
 384             theResults.push_back(*aRIter);
 385           }
 386         }
 387       }
 388     }
 389   }
 390 }
 391
 392
 393 TDF_Label Model_Objects::featuresLabel() const
 394 {
 395   return myMain.FindChild(TAG_OBJECTS);
 396 }
 397
 398 void Model_Objects::setUniqueName(FeaturePtr theFeature)
 399 {
 400   if (!theFeature->data()->name().empty())
 401     return;  // not needed, name is already defined
 402   std::string aName;  // result
 403   // first count all features of such kind to start with index = count + 1
 404   int aNumObjects = 0;
 405   NCollection_DataMap<TDF_Label, FeaturePtr>::Iterator aFIter(myFeatures);
 406   for (; aFIter.More(); aFIter.Next()) {
 407     if (aFIter.Value()->getKind() == theFeature->getKind())
 408       aNumObjects++;
 409   }
 410   // generate candidate name
 411   std::stringstream aNameStream;
 412   aNameStream << theFeature->getKind() << "_" << aNumObjects + 1;
 413   aName = aNameStream.str();
 414   // check this is unique, if not, increase index by 1
 415   for (aFIter.Initialize(myFeatures); aFIter.More();) {
 416     FeaturePtr aFeature = aFIter.Value();
 417     bool isSameName = aFeature->data()->name() == aName;
 418     if (!isSameName) {  // check also results to avoid same results names (actual for Parts)
 419       const std::list<std::shared_ptr<ModelAPI_Result> >& aResults = aFeature->results();
 420       std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aRIter = aResults.begin();
 421       for (; aRIter != aResults.cend(); aRIter++) {
 422         isSameName = (*aRIter)->data()->name() == aName;
 423       }
 424     }
 425     if (isSameName) {
 426       aNumObjects++;
 427       std::stringstream aNameStream;
 428       aNameStream << theFeature->getKind() << "_" << aNumObjects + 1;
 429       aName = aNameStream.str();
 430       // reinitialize iterator to make sure a new name is unique
 431       aFIter.Initialize(myFeatures);
 432     } else
 433       aFIter.Next();
 434   }
 435   theFeature->data()->setName(aName);
 436 }
 437
 438 void Model_Objects::initData(ObjectPtr theObj, TDF_Label theLab, const int theTag)
 439 {
 440   std::shared_ptr<Model_Data> aData(new Model_Data);
 441   aData->setLabel(theLab.FindChild(theTag));
 442   aData->setObject(theObj);
 443   theObj->setDoc(myDoc);
 444   theObj->setData(aData);
 445   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theObj);
 446   if (aFeature) {
 447     setUniqueName(aFeature);  // must be before "initAttributes" because duplicate part uses name
 448   }
 449   theObj->initAttributes();
 450 }
 451
 452 void Model_Objects::synchronizeFeatures(
 453   const bool theMarkUpdated, const bool theUpdateReferences, const bool theFlush)
 454 {
 455   Model_Document* anOwner = std::dynamic_pointer_cast<Model_Document>(myDoc).get();
 456   if (!anOwner) // this may happen on creation of document: nothing there, so nothing to synchronize
 457     return;
 458   // after all updates, sends a message that groups of features were created or updated
 459   Events_Loop* aLoop = Events_Loop::loop();
 460   static Events_ID aDispEvent = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 461   static Events_ID aCreateEvent = Events_Loop::eventByName(EVENT_OBJECT_CREATED);
 462   static Events_ID anUpdateEvent = Events_Loop::eventByName(EVENT_OBJECT_UPDATED);
 463   static Events_ID aRedispEvent = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 464   static Events_ID aDeleteEvent = Events_Loop::eventByName(EVENT_OBJECT_DELETED);
 465   static Events_ID aToHideEvent = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 466   aLoop->activateFlushes(false);
 467
 468   // update all objects by checking are they on labels or not
 469   std::set<FeaturePtr> aNewFeatures, aKeptFeatures;
 470   TDF_ChildIDIterator aLabIter(featuresLabel(), TDataStd_Comment::GetID());
 471   for (; aLabIter.More(); aLabIter.Next()) {
 472     TDF_Label aFeatureLabel = aLabIter.Value()->Label();
 473     FeaturePtr aFeature;
 474     if (!myFeatures.IsBound(aFeatureLabel)) {  // a new feature is inserted
 475       // create a feature
 476       aFeature = std::dynamic_pointer_cast<Model_Session>(ModelAPI_Session::get())->createFeature(
 477         TCollection_AsciiString(Handle(TDataStd_Comment)::DownCast(aLabIter.Value())->Get())
 478         .ToCString(), anOwner);
 479       if (!aFeature) {  // somethig is wrong, most probably, the opened document has invalid structure
 480         Events_Error::send("Invalid type of object in the document");
 481         aLabIter.Value()->Label().ForgetAllAttributes();
 482         continue;
 483       }
 484       // this must be before "setData" to redo the sketch line correctly
 485       myFeatures.Bind(aFeatureLabel, aFeature);
 486       aNewFeatures.insert(aFeature);
 487       initData(aFeature, aFeatureLabel, TAG_FEATURE_ARGUMENTS);
 488       updateHistory(aFeature);
 489
 490       // event: model is updated
 491       ModelAPI_EventCreator::get()->sendUpdated(aFeature, aCreateEvent);
 492     } else {  // nothing is changed, both iterators are incremented
 493       aFeature = myFeatures.Find(aFeatureLabel);
 494       aKeptFeatures.insert(aFeature);
 495       if (theMarkUpdated) {
 496         ModelAPI_EventCreator::get()->sendUpdated(aFeature, anUpdateEvent);
 497       }
 498     }
 499   }
 500   // update results of the features (after features created because they may be connected, like sketch and sub elements)
 501   std::list<FeaturePtr> aComposites; // composites must be updated after their subs (issue 360)
 502   TDF_ChildIDIterator aLabIter2(featuresLabel(), TDataStd_Comment::GetID());
 503   for (; aLabIter2.More(); aLabIter2.Next()) {
 504     TDF_Label aFeatureLabel = aLabIter2.Value()->Label();
 505     if (myFeatures.IsBound(aFeatureLabel)) {  // a new feature is inserted
 506       FeaturePtr aFeature = myFeatures.Find(aFeatureLabel);
 507       if (std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(aFeature).get())
 508         aComposites.push_back(aFeature);
 509       updateResults(aFeature);
 510     }
 511   }
 512   std::list<FeaturePtr>::iterator aComposite = aComposites.begin();
 513   for(; aComposite != aComposites.end(); aComposite++) {
 514     updateResults(*aComposite);
 515   }
 516
 517   // check all features are checked: if not => it was removed
 518   NCollection_DataMap<TDF_Label, FeaturePtr>::Iterator aFIter(myFeatures);
 519   while (aFIter.More()) {
 520     if (aKeptFeatures.find(aFIter.Value()) == aKeptFeatures.end()
 521       && aNewFeatures.find(aFIter.Value()) == aNewFeatures.end()) {
 522         FeaturePtr aFeature = aFIter.Value();
 523         // event: model is updated
 524         //if (aFeature->isInHistory()) {
 525         ModelAPI_EventCreator::get()->sendDeleted(myDoc, ModelAPI_Feature::group());
 526         //}
 527         // results of this feature must be redisplayed (hided)
 528         // redisplay also removed feature (used for sketch and AISObject)
 529         ModelAPI_EventCreator::get()->sendUpdated(aFeature, aRedispEvent);
 530         updateHistory(aFeature);
 531         aFeature->erase();
 532         // unbind after the "erase" call: on abort sketch is removes sub-objects that corrupts aFIter
 533         myFeatures.UnBind(aFIter.Key());
 534         // reinitialize iterator because unbind may corrupt the previous order in the map
 535         aFIter.Initialize(myFeatures);
 536     } else
 537       aFIter.Next();
 538   }
 539
 540   if (theUpdateReferences) {
 541     synchronizeBackRefs();
 542   }
 543   if (theMarkUpdated) { // this means there is no control what was modified => remove history cash
 544     myHistory.clear();
 545   }
 546
 547   anOwner->executeFeatures() = false;
 548   aLoop->activateFlushes(true);
 549
 550   if (theFlush) {
 551     aLoop->flush(aCreateEvent);
 552     aLoop->flush(aDeleteEvent);
 553     aLoop->flush(anUpdateEvent);
 554     aLoop->flush(aRedispEvent);
 555     aLoop->flush(aToHideEvent);
 556   }
 557   anOwner->executeFeatures() = true;
 558 }
 559
 560 void Model_Objects::synchronizeBackRefs()
 561 {
 562   // keeps the concealed flags of result to catch the change and create created/deleted events
 563   std::list<std::pair<ResultPtr, bool> > aConcealed;
 564   // first cycle: erase all data about back-references
 565   NCollection_DataMap<TDF_Label, FeaturePtr>::Iterator aFeatures(myFeatures);
 566   for(; aFeatures.More(); aFeatures.Next()) {
 567     FeaturePtr aFeature = aFeatures.Value();
 568     std::shared_ptr<Model_Data> aFData =
 569       std::dynamic_pointer_cast<Model_Data>(aFeature->data());
 570     if (aFData) {
 571       aFData->eraseBackReferences();
 572     }
 573     const std::list<std::shared_ptr<ModelAPI_Result> >& aResults = aFeature->results();
 574     std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aRIter = aResults.begin();
 575     for (; aRIter != aResults.cend(); aRIter++) {
 576       std::shared_ptr<Model_Data> aResData =
 577         std::dynamic_pointer_cast<Model_Data>((*aRIter)->data());
 578       if (aResData) {
 579         aConcealed.push_back(std::pair<ResultPtr, bool>(*aRIter, (*aRIter)->isConcealed()));
 580         aResData->eraseBackReferences();
 581       }
 582     }
 583   }
 584
 585   // second cycle: set new back-references: only features may have reference, iterate only them
 586   ModelAPI_ValidatorsFactory* aValidators = ModelAPI_Session::get()->validators();
 587   for(aFeatures.Initialize(myFeatures); aFeatures.More(); aFeatures.Next()) {
 588     FeaturePtr aFeature = aFeatures.Value();
 589     std::shared_ptr<Model_Data> aFData =
 590       std::dynamic_pointer_cast<Model_Data>(aFeature->data());
 591     if (aFData) {
 592       std::list<std::pair<std::string, std::list<ObjectPtr> > > aRefs;
 593       aFData->referencesToObjects(aRefs);
 594       std::list<std::pair<std::string, std::list<ObjectPtr> > >::iterator
 595         aRefsIter = aRefs.begin();
 596       for(; aRefsIter != aRefs.end(); aRefsIter++) {
 597         std::list<ObjectPtr>::iterator aRefTo = aRefsIter->second.begin();
 598         for(; aRefTo != aRefsIter->second.end(); aRefTo++) {
 599           if (*aRefTo) {
 600             std::shared_ptr<Model_Data> aRefData =
 601               std::dynamic_pointer_cast<Model_Data>((*aRefTo)->data());
 602             aRefData->addBackReference(aFeature, aRefsIter->first); // here the Concealed flag is updated
 603           }
 604         }
 605       }
 606     }
 607   }
 608   std::list<std::pair<ResultPtr, bool> >::iterator aCIter = aConcealed.begin();
 609   for(; aCIter != aConcealed.end(); aCIter++) {
 610     if (aCIter->first->isConcealed() != aCIter->second) { // somethign is changed => produce event
 611       if (aCIter->second) { // was concealed become not => creation event
 612         static Events_ID anEvent = Events_Loop::eventByName(EVENT_OBJECT_CREATED);
 613         ModelAPI_EventCreator::get()->sendUpdated(aCIter->first, anEvent);
 614       } else { // was not concealed become concealed => delete event
 615         ModelAPI_EventCreator::get()->sendDeleted(myDoc, aCIter->first->groupName());
 616         // redisplay for the viewer (it must be disappeared also)
 617         static Events_ID EVENT_DISP =
 618           Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 619         ModelAPI_EventCreator::get()->sendUpdated(aCIter->first, EVENT_DISP);
 620       }
 621     }
 622   }
 623 }
 624
 625 TDF_Label Model_Objects::resultLabel(
 626   const std::shared_ptr<ModelAPI_Data>& theFeatureData, const int theResultIndex)
 627 {
 628   const std::shared_ptr<Model_Data>& aData =
 629     std::dynamic_pointer_cast<Model_Data>(theFeatureData);
 630   return aData->label().Father().FindChild(TAG_FEATURE_RESULTS).FindChild(theResultIndex + 1);
 631 }
 632
 633 void Model_Objects::storeResult(std::shared_ptr<ModelAPI_Data> theFeatureData,
 634                                  std::shared_ptr<ModelAPI_Result> theResult,
 635                                  const int theResultIndex)
 636 {
 637   theResult->setDoc(myDoc);
 638   initData(theResult, resultLabel(theFeatureData, theResultIndex), TAG_FEATURE_ARGUMENTS);
 639   if (theResult->data()->name().empty()) {  // if was not initialized, generate event and set a name
 640     std::stringstream aNewName;
 641     aNewName<<theFeatureData->name();
 642     if (theResultIndex > 0) // if there are several results, add unique prefix starting from second
 643       aNewName<<"_"<<theResultIndex + 1;
 644     theResult->data()->setName(aNewName.str());
 645   }
 646 }
 647
 648 std::shared_ptr<ModelAPI_ResultConstruction> Model_Objects::createConstruction(
 649     const std::shared_ptr<ModelAPI_Data>& theFeatureData, const int theIndex)
 650 {
 651   TDF_Label aLab = resultLabel(theFeatureData, theIndex);
 652   TDataStd_Comment::Set(aLab, ModelAPI_ResultConstruction::group().c_str());
 653   ObjectPtr anOldObject = object(aLab);
 654   std::shared_ptr<ModelAPI_ResultConstruction> aResult;
 655   if (anOldObject) {
 656     aResult = std::dynamic_pointer_cast<ModelAPI_ResultConstruction>(anOldObject);
 657   }
 658   if (!aResult) {
 659     aResult = std::shared_ptr<ModelAPI_ResultConstruction>(new Model_ResultConstruction);
 660     storeResult(theFeatureData, aResult, theIndex);
 661   }
 662   return aResult;
 663 }
 664
 665 std::shared_ptr<ModelAPI_ResultBody> Model_Objects::createBody(
 666     const std::shared_ptr<ModelAPI_Data>& theFeatureData, const int theIndex)
 667 {
 668   TDF_Label aLab = resultLabel(theFeatureData, theIndex);
 669   TDataStd_Comment::Set(aLab, ModelAPI_ResultBody::group().c_str());
 670   ObjectPtr anOldObject = object(aLab);
 671   std::shared_ptr<ModelAPI_ResultBody> aResult;
 672   if (anOldObject) {
 673     aResult = std::dynamic_pointer_cast<ModelAPI_ResultBody>(anOldObject);
 674   }
 675   if (!aResult) {
 676     aResult = std::shared_ptr<ModelAPI_ResultBody>(new Model_ResultBody);
 677     storeResult(theFeatureData, aResult, theIndex);
 678   }
 679   return aResult;
 680 }
 681
 682 std::shared_ptr<ModelAPI_ResultPart> Model_Objects::createPart(
 683     const std::shared_ptr<ModelAPI_Data>& theFeatureData, const int theIndex)
 684 {
 685   TDF_Label aLab = resultLabel(theFeatureData, theIndex);
 686   TDataStd_Comment::Set(aLab, ModelAPI_ResultPart::group().c_str());
 687   ObjectPtr anOldObject = object(aLab);
 688   std::shared_ptr<ModelAPI_ResultPart> aResult;
 689   if (anOldObject) {
 690     aResult = std::dynamic_pointer_cast<ModelAPI_ResultPart>(anOldObject);
 691   }
 692   if (!aResult) {
 693     aResult = std::shared_ptr<ModelAPI_ResultPart>(new Model_ResultPart);
 694     storeResult(theFeatureData, aResult, theIndex);
 695   }
 696   return aResult;
 697 }
 698
 699 std::shared_ptr<ModelAPI_ResultGroup> Model_Objects::createGroup(
 700     const std::shared_ptr<ModelAPI_Data>& theFeatureData, const int theIndex)
 701 {
 702   TDF_Label aLab = resultLabel(theFeatureData, theIndex);
 703   TDataStd_Comment::Set(aLab, ModelAPI_ResultGroup::group().c_str());
 704   ObjectPtr anOldObject = object(aLab);
 705   std::shared_ptr<ModelAPI_ResultGroup> aResult;
 706   if (anOldObject) {
 707     aResult = std::dynamic_pointer_cast<ModelAPI_ResultGroup>(anOldObject);
 708   }
 709   if (!aResult) {
 710     aResult = std::shared_ptr<ModelAPI_ResultGroup>(new Model_ResultGroup(theFeatureData));
 711     storeResult(theFeatureData, aResult, theIndex);
 712   }
 713   return aResult;
 714 }
 715
 716 std::shared_ptr<ModelAPI_ResultParameter> Model_Objects::createParameter(
 717       const std::shared_ptr<ModelAPI_Data>& theFeatureData, const int theIndex)
 718 {
 719   TDF_Label aLab = resultLabel(theFeatureData, theIndex);
 720   TDataStd_Comment::Set(aLab, ModelAPI_ResultParameter::group().c_str());
 721   ObjectPtr anOldObject = object(aLab);
 722   std::shared_ptr<ModelAPI_ResultParameter> aResult;
 723   if (anOldObject) {
 724     aResult = std::dynamic_pointer_cast<ModelAPI_ResultParameter>(anOldObject);
 725   }
 726   if (!aResult) {
 727     aResult = std::shared_ptr<ModelAPI_ResultParameter>(new Model_ResultParameter);
 728     storeResult(theFeatureData, aResult, theIndex);
 729   }
 730   return aResult;
 731 }
 732
 733 std::shared_ptr<ModelAPI_Feature> Model_Objects::feature(
 734     const std::shared_ptr<ModelAPI_Result>& theResult)
 735 {
 736   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(theResult->data());
 737   if (aData) {
 738     TDF_Label aFeatureLab = aData->label().Father().Father().Father();
 739     return feature(aFeatureLab);
 740   }
 741   return FeaturePtr();
 742 }
 743
 744 void Model_Objects::updateResults(FeaturePtr theFeature)
 745 {
 746   // for not persistent is will be done by parametric updater automatically
 747   //if (!theFeature->isPersistentResult()) return;
 748   // check the existing results and remove them if there is nothing on the label
 749   std::list<ResultPtr>::const_iterator aResIter = theFeature->results().cbegin();
 750   while(aResIter != theFeature->results().cend()) {
 751     ResultPtr aBody = std::dynamic_pointer_cast<ModelAPI_Result>(*aResIter);
 752     if (aBody) {
 753       if (!aBody->data()->isValid()) {
 754         // found a disappeared result => remove it
 755         theFeature->removeResult(aBody);
 756         // start iterate from beginning because iterator is corrupted by removing
 757         aResIter = theFeature->results().cbegin();
 758         continue;
 759       }
 760     }
 761     aResIter++;
 762   }
 763   // it may be on undo
 764   if (!theFeature->data() || !theFeature->data()->isValid() || theFeature->isDisabled())
 765     return;
 766   // check that results are presented on all labels
 767   int aResSize = theFeature->results().size();
 768   TDF_ChildIterator aLabIter(resultLabel(theFeature->data(), 0).Father());
 769   for(; aLabIter.More(); aLabIter.Next()) {
 770     // here must be GUID of the feature
 771     int aResIndex = aLabIter.Value().Tag() - 1;
 772     ResultPtr aNewBody;
 773     if (aResSize <= aResIndex) {
 774       TDF_Label anArgLab = aLabIter.Value();
 775       Handle(TDataStd_Comment) aGroup;
 776       if (anArgLab.FindAttribute(TDataStd_Comment::GetID(), aGroup)) {
 777         if (aGroup->Get() == ModelAPI_ResultBody::group().c_str()) {
 778           aNewBody = createBody(theFeature->data(), aResIndex);
 779         } else if (aGroup->Get() == ModelAPI_ResultPart::group().c_str()) {
 780           aNewBody = createPart(theFeature->data(), aResIndex);
 781         } else if (aGroup->Get() == ModelAPI_ResultConstruction::group().c_str()) {
 782           theFeature->execute(); // construction shapes are needed for sketch solver
 783           break;
 784         } else if (aGroup->Get() == ModelAPI_ResultGroup::group().c_str()) {
 785           aNewBody = createGroup(theFeature->data(), aResIndex);
 786         } else if (aGroup->Get() == ModelAPI_ResultParameter::group().c_str()) {
 787           theFeature->attributeChanged("expression"); // just produce a value
 788           break;
 789         } else {
 790           Events_Error::send(std::string("Unknown type of result is found in the document:") +
 791             TCollection_AsciiString(aGroup->Get()).ToCString());
 792         }
 793       }
 794       if (aNewBody) {
 795         theFeature->setResult(aNewBody, aResIndex);
 796       }
 797     }
 798   }
 799 }
 800
 801 ResultPtr Model_Objects::findByName(const std::string theName)
 802 {
 803   NCollection_DataMap<TDF_Label, FeaturePtr>::Iterator anObjIter(myFeatures);
 804   for(; anObjIter.More(); anObjIter.Next()) {
 805     FeaturePtr& aFeature = anObjIter.ChangeValue();
 806     if (!aFeature.get() || aFeature->isDisabled()) // may be on close
 807       continue;
 808     const std::list<std::shared_ptr<ModelAPI_Result> >& aResults = aFeature->results();
 809     std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aRIter = aResults.begin();
 810     for (; aRIter != aResults.cend(); aRIter++) {
 811       ResultPtr aRes = *aRIter;
 812       if (aRes.get() && aRes->data() && aRes->data()->isValid() && !aRes->isDisabled() &&
 813           aRes->data()->name() == theName) {
 814         return aRes;
 815       }
 816     }
 817   }
 818   // not found
 819   return ResultPtr();
 820 }
 821
 822 FeaturePtr Model_Objects::nextFeature(FeaturePtr theCurrent, const bool theReverse)
 823 {
 824   std::shared_ptr<Model_Data> aData = std::static_pointer_cast<Model_Data>(theCurrent->data());
 825   if (aData) {
 826     TDF_Label aFeatureLabel = aData->label().Father();
 827     Handle(TDataStd_ReferenceArray) aRefs;
 828     if (featuresLabel().FindAttribute(TDataStd_ReferenceArray::GetID(), aRefs)) {
 829       for(int a = aRefs->Lower(); a <= aRefs->Upper(); a++) { // iterate all existing features
 830         if (aRefs->Value(a).IsEqual(aFeatureLabel)) {
 831           a += theReverse ? -1 : 1;
 832           if (a >= aRefs->Lower() && a <= aRefs->Upper())
 833             return feature(aRefs->Value(a));
 834           break; // finish iiteration: it's last feature
 835         }
 836       }
 837     }
 838   }
 839   return FeaturePtr(); // not found, last, or something is wrong
 840 }
 841
 842 FeaturePtr Model_Objects::firstFeature()
 843 {
 844   Handle(TDataStd_ReferenceArray) aRefs;
 845   if (featuresLabel().FindAttribute(TDataStd_ReferenceArray::GetID(), aRefs)) {
 846     return feature(aRefs->Value(aRefs->Lower()));
 847   }
 848   return FeaturePtr(); // no features at all
 849 }
 850
 851 FeaturePtr Model_Objects::lastFeature()
 852 {
 853   Handle(TDataStd_ReferenceArray) aRefs;
 854   if (featuresLabel().FindAttribute(TDataStd_ReferenceArray::GetID(), aRefs)) {
 855     return feature(aRefs->Value(aRefs->Upper()));
 856   }
 857   return FeaturePtr(); // no features at all
 858 }
 859
 860 Standard_Integer HashCode(const TDF_Label& theLab, const Standard_Integer theUpper)
 861 {
 862   return TDF_LabelMapHasher::HashCode(theLab, theUpper);
 863
 864 }
 865 Standard_Boolean IsEqual(const TDF_Label& theLab1, const TDF_Label& theLab2)
 866 {
 867   return TDF_LabelMapHasher::IsEqual(theLab1, theLab2);
 868 }