src/Model/Model_Update.cpp

   1 // Copyright (C) 2014-2021  CEA/DEN, EDF R&D
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19
  20 #include <Model_Update.h>
  21 #include <Model_Document.h>
  22 #include <Model_Data.h>
  23 #include <Model_Objects.h>
  24 #include <ModelAPI_Feature.h>
  25 #include <ModelAPI_Data.h>
  26 #include <ModelAPI_Document.h>
  27 #include <ModelAPI_Events.h>
  28 #include <ModelAPI_AttributeReference.h>
  29 #include <ModelAPI_AttributeRefList.h>
  30 #include <ModelAPI_AttributeRefAttr.h>
  31 #include <ModelAPI_AttributeSelection.h>
  32 #include <ModelAPI_AttributeSelectionList.h>
  33 #include <ModelAPI_Result.h>
  34 #include <ModelAPI_ResultPart.h>
  35 #include <ModelAPI_Validator.h>
  36 #include <ModelAPI_CompositeFeature.h>
  37 #include <ModelAPI_Session.h>
  38 #include <ModelAPI_Tools.h>
  39 #include <ModelAPI_ResultBody.h>
  40 #include <ModelAPI_ResultPart.h>
  41 #include <ModelAPI_ResultConstruction.h>
  42 #include <GeomAPI_Shape.h>
  43 #include <GeomDataAPI_Point.h>
  44 #include <GeomDataAPI_Dir.h>
  45 #include <GeomDataAPI_Point2D.h>
  46 #include <Events_Loop.h>
  47 #include <Events_LongOp.h>
  48 #include <Events_InfoMessage.h>
  49 #include <Config_PropManager.h>
  50
  51 Model_Update MY_UPDATER_INSTANCE;  /// the only one instance initialized on load of the library
  52 //#define DEB_UPDATE
  53
  54 #ifdef DEB_UPDATE
  55 #include <Locale_Convert.h>
  56 #endif
  57
  58 Model_Update::Model_Update()
  59 {
  60   Events_Loop* aLoop = Events_Loop::loop();
  61   static const Events_ID kChangedEvent = aLoop->eventByName("PreferenceChanged");
  62   aLoop->registerListener(this, kChangedEvent);
  63   static const Events_ID kCreatedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_CREATED);
  64   aLoop->registerListener(this, kCreatedEvent);
  65   static const Events_ID kUpdatedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_UPDATED);
  66   aLoop->registerListener(this, kUpdatedEvent);
  67   static const Events_ID kOpFinishEvent = aLoop->eventByName("FinishOperation");
  68   aLoop->registerListener(this, kOpFinishEvent);
  69   static const Events_ID kOpAbortEvent = aLoop->eventByName("AbortOperation");
  70   aLoop->registerListener(this, kOpAbortEvent);
  71   static const Events_ID kOpStartEvent = aLoop->eventByName("StartOperation");
  72   aLoop->registerListener(this, kOpStartEvent);
  73   static const Events_ID kStabilityEvent = aLoop->eventByName(EVENT_STABILITY_CHANGED);
  74   aLoop->registerListener(this, kStabilityEvent);
  75   static const Events_ID kPreviewBlockedEvent = aLoop->eventByName(EVENT_PREVIEW_BLOCKED);
  76   aLoop->registerListener(this, kPreviewBlockedEvent);
  77   static const Events_ID kPreviewRequestedEvent = aLoop->eventByName(EVENT_PREVIEW_REQUESTED);
  78   aLoop->registerListener(this, kPreviewRequestedEvent);
  79   static const Events_ID kReorderEvent = aLoop->eventByName(EVENT_ORDER_UPDATED);
  80   aLoop->registerListener(this, kReorderEvent);
  81   static const Events_ID kUpdatedSel = aLoop->eventByName(EVENT_UPDATE_SELECTION);
  82   aLoop->registerListener(this, kUpdatedSel);
  83   static const Events_ID kAutoRecomp = aLoop->eventByName(EVENT_AUTOMATIC_RECOMPUTATION_ENABLE);
  84   aLoop->registerListener(this, kAutoRecomp);
  85
  86   //  Config_PropManager::findProp("Model update", "automatic_rebuild")->value() == "true";
  87   myIsParamUpdated = false;
  88   myIsFinish = false;
  89   myIsProcessed = false;
  90   myIsPreviewBlocked = false;
  91   myUpdateBlocked = false;
  92 }
  93
  94 bool Model_Update::addModified(FeaturePtr theFeature, FeaturePtr theReason) {
  95
  96   if (!theFeature->data()->isValid())
  97     return false; // delete an extrusion created on the sketch
  98
  99
 100   bool isNotExecuted = theFeature->isPersistentResult() &&
 101     !std::dynamic_pointer_cast<Model_Document>((theFeature)->document())->executeFeatures();
 102   if (isNotExecuted) {
 103     redisplayWithResults(theFeature, ModelAPI_StateNothing, false); // redisplay even not executed
 104     if (!theReason.get()) // no reason => no construction reason
 105       return false;
 106     if (myNotPersistentRefs.find(theFeature) == myNotPersistentRefs.end()) {
 107       myNotPersistentRefs[theFeature].insert(theReason);
 108     } else {
 109       std::set<std::shared_ptr<ModelAPI_Feature> > aNewSet;
 110       aNewSet.insert(theReason);
 111       myNotPersistentRefs[theFeature] = aNewSet;
 112     }
 113     return false;
 114   }
 115
 116   // update arguments for "apply button" state change
 117   if ((!theFeature->isPreviewNeeded() && !myIsFinish) || myIsPreviewBlocked) {
 118     if (theReason.get())
 119       myProcessOnFinish[theFeature].insert(theReason);
 120     else if (myProcessOnFinish.find(theFeature) == myProcessOnFinish.end())
 121       myProcessOnFinish[theFeature] = std::set<std::shared_ptr<ModelAPI_Feature> >();
 122 #ifdef DEB_UPDATE
 123       std::wcout<<L"*** Add process on finish "<<theFeature->name()<<std::endl;
 124 #endif
 125     // keeps the currently updated features to avoid infinitive cycling here: where feature on
 126     // "updateArguments" sends "updated" (in selection attribute) and goes here again
 127     static std::set<FeaturePtr> aCurrentlyUpdated;
 128     if (aCurrentlyUpdated.find(theFeature) == aCurrentlyUpdated.end()) {
 129       aCurrentlyUpdated.insert(theFeature);
 130       updateArguments(theFeature);
 131       aCurrentlyUpdated.erase(theFeature);
 132     }
 133     // make it without conditions otherwise the apply button may have a bad state
 134     theFeature->data()->execState(ModelAPI_StateDone);
 135     static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 136      // need to be validated to update the "Apply" state if not previewed
 137     aFactory->validate(theFeature);
 138
 139     // to redisplay split's arguments presentation, even result is not computed
 140     if (!theFeature->isPreviewNeeded()) {
 141       static Events_Loop* aLoop = Events_Loop::loop();
 142       static const Events_ID kRedisplayEvent = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 143       ModelAPI_EventCreator::get()->sendUpdated(theFeature, kRedisplayEvent);
 144       aLoop->flush(kRedisplayEvent);
 145     }
 146
 147     if (!myIsPreviewBlocked)
 148       return true;
 149   }
 150   if (myModified.find(theFeature) != myModified.end()) {
 151     if (theReason.get()) {
 152 #ifdef DEB_UPDATE
 153       //std::cout<<"*** Add already modified "
 154       //   <<theFeature->name()<<" reason "<<theReason->name()<<std::endl;
 155 #endif
 156       myModified[theFeature].insert(theReason);
 157     }
 158     return true;
 159   }
 160   // do not add the disabled, but possibly the sub-elements are not disabled
 161   bool aIsDisabled = theFeature->isDisabled();
 162   if (!aIsDisabled) {
 163     std::set<std::shared_ptr<ModelAPI_Feature> > aNewSet;
 164     if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated ||
 165         theFeature->data()->execState() == ModelAPI_StateInvalidArgument || // issue 1519
 166         theFeature->data()->execState() == ModelAPI_StateExecFailed) {
 167       // do not forget that in this case all were the reasons
 168       aNewSet.insert(theFeature);
 169     } else {
 170       if (theReason.get())
 171         aNewSet.insert(theReason);
 172     }
 173     myModified[theFeature] = aNewSet;
 174 #ifdef DEB_UPDATE
 175     if (theReason.get()) {
 176       //std::cout<<"*** Add modified "<<theFeature->name()
 177       //  <<" reason "<<theReason->name()<<std::endl;
 178     } else {
 179       //std::cout<<"*** Add modified "<<theFeature->name()<<std::endl;
 180     }
 181 #endif
 182   } else { // will be updated during the finish of the operation, or when it becomes enabled
 183     if (theFeature->data()->execState() == ModelAPI_StateDone ||
 184         theFeature->data()->execState() == ModelAPI_StateExecFailed) // fix issue 1819
 185       theFeature->data()->execState(ModelAPI_StateMustBeUpdated);
 186     else
 187       return true; // do not need iteration deeply if it is already marked as modified or so
 188 #ifdef DEB_UPDATE
 189     //std::cout<<"*** Set modified state "<<theFeature->name()<<std::endl;
 190 #endif
 191   }
 192   // clear processed and fill modified recursively
 193   std::set<FeaturePtr> aRefSet;
 194   const std::set<std::shared_ptr<ModelAPI_Attribute> >& aRefs = theFeature->data()->refsToMe();
 195   std::set<std::shared_ptr<ModelAPI_Attribute> >::const_iterator aRefIter = aRefs.cbegin();
 196   for(; aRefIter != aRefs.cend(); aRefIter++) {
 197     if ((*aRefIter)->isArgument()) {
 198       FeaturePtr aReferenced = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRefIter)->owner());
 199       if (aReferenced.get()) {
 200         aRefSet.insert(aReferenced);
 201       }
 202     }
 203   }
 204   // process also results
 205   std::list<ResultPtr> allResults; // list of this feature and results
 206   ModelAPI_Tools::allResults(theFeature, allResults);
 207   std::list<ResultPtr>::iterator aRes = allResults.begin();
 208   for(; aRes != allResults.end(); aRes++) {
 209     const std::set<std::shared_ptr<ModelAPI_Attribute> >& aResRefs = (*aRes)->data()->refsToMe();
 210     std::set<std::shared_ptr<ModelAPI_Attribute> >::const_iterator aRIter = aResRefs.cbegin();
 211     for(; aRIter != aResRefs.cend(); aRIter++) {
 212       if ((*aRIter)->isArgument()) {
 213         FeaturePtr aReferenced = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRIter)->owner());
 214         if (aReferenced.get()) {
 215           aRefSet.insert(aReferenced);
 216         }
 217       }
 218     }
 219   }
 220   // also add part feature that contains this feature to the modified
 221   if (theFeature->document()->kind() != "PartSet") {
 222     FeaturePtr aPart = ModelAPI_Tools::findPartFeature(
 223       ModelAPI_Session::get()->moduleDocument(), theFeature->document());
 224     if (aPart.get())
 225       aRefSet.insert(aPart);
 226   }
 227   for(std::set<FeaturePtr>::iterator aRef = aRefSet.begin(); aRef != aRefSet.end(); aRef++)
 228     addModified(*aRef, theFeature);
 229
 230   return true;
 231 }
 232
 233 void Model_Update::processEvent(const std::shared_ptr<Events_Message>& theMessage)
 234 {
 235   static Events_Loop* aLoop = Events_Loop::loop();
 236   //static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 237   static const Events_ID kCreatedEvent = aLoop->eventByName(EVENT_OBJECT_CREATED);
 238   static const Events_ID kUpdatedEvent = aLoop->eventByName(EVENT_OBJECT_UPDATED);
 239   static const Events_ID kOpFinishEvent = aLoop->eventByName("FinishOperation");
 240   static const Events_ID kOpAbortEvent = aLoop->eventByName("AbortOperation");
 241   static const Events_ID kOpStartEvent = aLoop->eventByName("StartOperation");
 242   static const Events_ID kStabilityEvent = aLoop->eventByName(EVENT_STABILITY_CHANGED);
 243   static const Events_ID kPreviewBlockedEvent = aLoop->eventByName(EVENT_PREVIEW_BLOCKED);
 244   static const Events_ID kPreviewRequestedEvent = aLoop->eventByName(EVENT_PREVIEW_REQUESTED);
 245   static const Events_ID kReorderEvent = aLoop->eventByName(EVENT_ORDER_UPDATED);
 246   static const Events_ID kRedisplayEvent = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 247   static const Events_ID kUpdatedSel = aLoop->eventByName(EVENT_UPDATE_SELECTION);
 248
 249 #ifdef DEB_UPDATE
 250   std::cout<<"****** Event "<<theMessage->eventID().eventText()<<std::endl;
 251 #endif
 252   // check the automatic update flag on any event
 253   bool aNewAutomaticState = ModelAPI_Session::get()->isAutoUpdateBlocked();
 254   if (myUpdateBlocked != aNewAutomaticState) {
 255     myUpdateBlocked = aNewAutomaticState;
 256     if (!myUpdateBlocked) { // process all modified features, even if preview is blocked
 257       bool aPreviewBlockedState = myIsPreviewBlocked; // to update the selected arguments
 258       myIsPreviewBlocked = false;
 259       // iterate everything and add features in state "MustBeUpdated" into modified
 260       std::list<std::shared_ptr<ModelAPI_Document> > allDocs =
 261         ModelAPI_Session::get()->allOpenedDocuments();
 262       std::list<std::shared_ptr<ModelAPI_Document> >::iterator aDoc = allDocs.begin();
 263       for(; aDoc != allDocs.end(); aDoc++) {
 264         std::list<std::shared_ptr<ModelAPI_Feature> > allFeats = (*aDoc)->allFeatures();
 265         std::list<std::shared_ptr<ModelAPI_Feature> >::iterator aFeat = allFeats.begin();
 266         for(; aFeat != allFeats.end(); aFeat++) {
 267           if ((*aFeat)->data()->isValid() &&
 268             (*aFeat)->data()->execState() == ModelAPI_StateMustBeUpdated) {
 269             addModified(*aFeat, FeaturePtr());
 270           }
 271         }
 272       }
 273       processFeatures();
 274       myIsPreviewBlocked = aPreviewBlockedState;
 275     }
 276   }
 277
 278   if (theMessage->eventID() == kStabilityEvent) {
 279     updateStability(theMessage->sender());
 280     return;
 281   }
 282   if (theMessage->eventID() == kPreviewBlockedEvent) {
 283     myIsPreviewBlocked = true;
 284     return;
 285   }
 286   if (theMessage->eventID() == kPreviewRequestedEvent) {
 287     if (myIsPreviewBlocked) {
 288       bool anUpdateState = myUpdateBlocked;
 289       myUpdateBlocked = false;
 290       myIsPreviewBlocked = false;
 291       processFeatures();
 292       myIsPreviewBlocked = true;
 293       myUpdateBlocked = anUpdateState;
 294     }
 295     return;
 296   }
 297   if (theMessage->eventID() == kUpdatedSel) {
 298     std::shared_ptr<ModelAPI_ObjectUpdatedMessage> aMsg =
 299         std::dynamic_pointer_cast<ModelAPI_ObjectUpdatedMessage>(theMessage);
 300     updateSelection(aMsg->objects());
 301   }
 302   // creation is added to "update" to avoid recomputation twice:
 303   // on create and immediately after on update
 304   if (theMessage->eventID() == kCreatedEvent) {
 305     std::shared_ptr<ModelAPI_ObjectUpdatedMessage> aMsg =
 306         std::dynamic_pointer_cast<ModelAPI_ObjectUpdatedMessage>(theMessage);
 307     const std::set<ObjectPtr>& anObjs = aMsg->objects();
 308     std::set<ObjectPtr>::const_iterator anObjIter = anObjs.cbegin();
 309     std::list<ObjectPtr> aFeatures, aResults;
 310     for(; anObjIter != anObjs.cend(); anObjIter++) {
 311       if (std::dynamic_pointer_cast<Model_Document>((*anObjIter)->document())->executeFeatures()) {
 312         if ((*anObjIter)->groupName() == ModelAPI_Feature::group()) {
 313           // results creation means enabling, not update
 314           aFeatures.push_back(*anObjIter);
 315         } else {
 316           aResults.push_back(*anObjIter);
 317           ResultPartPtr aPart = std::dynamic_pointer_cast<ModelAPI_ResultPart>(*anObjIter);
 318           if (aPart.get() && aPart->data().get() && aPart->data()->isValid()) {
 319             aPart->shape(); // to update the shape on creation of the result
 320           }
 321         }
 322       }
 323     }
 324     ModelAPI_EventCreator::get()->sendUpdated(aFeatures, kUpdatedEvent);
 325     ModelAPI_EventCreator::get()->sendUpdated(aResults, kRedisplayEvent);
 326     return;
 327   }
 328   if (theMessage->eventID() == kUpdatedEvent) {
 329     std::shared_ptr<ModelAPI_ObjectUpdatedMessage> aMsg =
 330         std::dynamic_pointer_cast<ModelAPI_ObjectUpdatedMessage>(theMessage);
 331     const std::set<ObjectPtr>& anObjs = aMsg->objects();
 332     std::set<ObjectPtr>::const_iterator anObjIter = anObjs.cbegin();
 333     bool aSomeModified = false; // check that features not changed: only redisplay is needed
 334     for(; anObjIter != anObjs.cend(); anObjIter++) {
 335       if (!(*anObjIter)->data()->isValid())
 336         continue;
 337 #ifdef DEB_UPDATE
 338       std::wcout<<L">>> in event updated "<<Locale::Convert::toWString((*anObjIter)->groupName())
 339                 <<L" "<<(*anObjIter)->data()->name()<<std::endl;
 340 #endif
 341       if ((*anObjIter)->groupName() == ModelAPI_ResultParameter::group()) {
 342         myIsParamUpdated = true;
 343       }
 344       // on undo/redo, abort do not update persistent features
 345       FeaturePtr anUpdated = std::dynamic_pointer_cast<ModelAPI_Feature>(*anObjIter);
 346       if (anUpdated.get()) {
 347         if (addModified(anUpdated, FeaturePtr()))
 348           aSomeModified = true;
 349       } else {
 350         // process the updated result as update of features that refers to this result
 351         const std::set<std::shared_ptr<ModelAPI_Attribute> >&
 352           aRefs = (*anObjIter)->data()->refsToMe();
 353         std::set<std::shared_ptr<ModelAPI_Attribute> >::const_iterator aRefIter = aRefs.cbegin();
 354         FeaturePtr aReason;
 355         ResultPtr aReasonResult = std::dynamic_pointer_cast<ModelAPI_Result>(*anObjIter);
 356         if (aReasonResult.get())
 357           aReason = (*anObjIter)->document()->feature(aReasonResult);
 358         for(; aRefIter != aRefs.cend(); aRefIter++) {
 359           if (!(*aRefIter)->owner()->data()->isValid())
 360             continue;
 361           anUpdated = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRefIter)->owner());
 362           if (anUpdated.get()) {
 363             if (addModified(anUpdated, aReason))
 364               aSomeModified = true;
 365           }
 366         }
 367       }
 368     }
 369     // this event is for solver update, not here, do not react immediately
 370     if (aSomeModified) {
 371         processFeatures();
 372     }
 373   } else if (theMessage->eventID() == kOpFinishEvent || theMessage->eventID() == kOpAbortEvent ||
 374       theMessage->eventID() == kOpStartEvent) {
 375     myIsPreviewBlocked = false;
 376
 377     if (theMessage->eventID() == kOpFinishEvent) {// if update is blocked, skip
 378       myIsFinish = true;
 379       // add features that wait for finish as modified
 380       std::map<std::shared_ptr<ModelAPI_Feature>, std::set<std::shared_ptr<ModelAPI_Feature> > >::
 381         iterator aFeature = myProcessOnFinish.begin();
 382       for(; aFeature != myProcessOnFinish.end(); aFeature++) {
 383         if (aFeature->first->data()->isValid()) {// there may be already removed while wait
 384           if (aFeature->second.empty()) {
 385             addModified(aFeature->first, FeaturePtr());
 386             continue;
 387           }
 388           std::set<std::shared_ptr<ModelAPI_Feature> >::iterator aReasons;
 389           for(aReasons = aFeature->second.begin(); aReasons != aFeature->second.end(); aReasons++){
 390             addModified(aFeature->first, *aReasons);
 391           }
 392         }
 393       }
 394       myIsFinish = false;
 395     }
 396     // processed features must be only on finish, so clear anyway (to avoid re-import on load)
 397     myProcessOnFinish.clear();
 398
 399     // #2156: current must be sketch, left after the macro execution
 400     DocumentPtr anActiveDoc = ModelAPI_Session::get()->activeDocument();
 401     FeaturePtr aCurrent;
 402     if (anActiveDoc.get())
 403       aCurrent = anActiveDoc->currentFeature(false);
 404
 405     if (!(theMessage->eventID() == kOpStartEvent)) {
 406       processFeatures(false);
 407     }
 408
 409     if (anActiveDoc.get() && aCurrent.get() && aCurrent->data()->isValid()) {
 410       if (anActiveDoc->currentFeature(false) != aCurrent &&
 411           ModelAPI_Tools::compositeOwner(anActiveDoc->currentFeature(false)) == aCurrent)
 412         anActiveDoc->setCurrentFeature(aCurrent, false); // #2156 make the current feature back
 413     }
 414
 415     // remove all macros before clearing all created
 416     std::set<FeaturePtr>::iterator anUpdatedIter = myWaitForFinish.begin();
 417     while(anUpdatedIter != myWaitForFinish.end()) {
 418       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(*anUpdatedIter);
 419       if (aFeature.get()) {
 420         // remove macro on finish
 421         if (aFeature->isMacro()) {
 422           aFeature->document()->removeFeature(aFeature);
 423           myWaitForFinish.erase(aFeature);
 424         }
 425         // to avoid the map update problems on "remove"
 426         if (myWaitForFinish.find(aFeature) == myWaitForFinish.end()) {
 427           anUpdatedIter = myWaitForFinish.begin();
 428         } else {
 429           anUpdatedIter++;
 430         }
 431       } else {
 432         anUpdatedIter++;
 433       }
 434     }
 435     // the redisplay signal should be flushed in order
 436     // to erase the feature presentation in the viewer
 437     // if should be done after removeFeature() of document,
 438     // by this reason, upper processFeatures() do not perform this flush
 439     Events_Loop::loop()->flush(kRedisplayEvent);
 440
 441     // in the end of transaction everything is updated, so clear the old objects
 442     //myIsParamUpdated = false; // to avoid problems in sprocket.py parameter update
 443     myWaitForFinish.clear();
 444   } else if (theMessage->eventID() == kReorderEvent) {
 445     std::shared_ptr<ModelAPI_OrderUpdatedMessage> aMsg =
 446       std::dynamic_pointer_cast<ModelAPI_OrderUpdatedMessage>(theMessage);
 447     if (aMsg->reordered().get())
 448       addModified(aMsg->reordered(), aMsg->reordered()); // to update all attributes
 449   }
 450 }
 451
 452 void Model_Update::processFeatures(const bool theFlushRedisplay)
 453 {
 454    // perform update of everything if it is not performed right now or any preview is blocked
 455   if (!myIsProcessed && !myIsPreviewBlocked) {
 456     myIsProcessed = true;
 457     #ifdef DEB_UPDATE
 458       std::cout<<"****** Start processing"<<std::endl;
 459     #endif
 460
 461     while(!myModified.empty()) {
 462       processFeature(myModified.begin()->first);
 463     }
 464     myIsProcessed = false;
 465
 466     // to update the object browser if something is updated/created during executions
 467     static Events_Loop* aLoop = Events_Loop::loop();
 468     static const Events_ID kCreatedEvent= aLoop->eventByName(EVENT_OBJECT_CREATED);
 469     aLoop->flush(kCreatedEvent);
 470     static const Events_ID kUpdatedEvent = aLoop->eventByName(EVENT_OBJECT_UPDATED);
 471     aLoop->flush(kUpdatedEvent);
 472
 473     // flush to update display
 474     if (theFlushRedisplay) {
 475       static Events_ID EVENT_DISP = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 476       aLoop->flush(EVENT_DISP);
 477     }
 478     #ifdef DEB_UPDATE
 479       std::cout<<"****** End processing"<<std::endl;
 480     #endif
 481     myProcessed.clear();
 482   }
 483 }
 484
 485 // collects all the features this feature depends on: reasons
 486 static void allReasons(FeaturePtr theFeature, std::set<FeaturePtr>& theReasons) {
 487   std::list<std::pair<std::string, std::list<std::shared_ptr<ModelAPI_Object> > > > aDeps;
 488   theFeature->data()->referencesToObjects(aDeps);
 489   std::list<std::pair<std::string, std::list<std::shared_ptr<ModelAPI_Object> > > >::iterator
 490     anAttrsIter = aDeps.begin();
 491   for(; anAttrsIter != aDeps.end(); anAttrsIter++) {
 492     if (theFeature->attribute(anAttrsIter->first)->isArgument()) {
 493       std::list<std::shared_ptr<ModelAPI_Object> >::iterator aDepIter = anAttrsIter->second.begin();
 494       for(; aDepIter != anAttrsIter->second.end(); aDepIter++) {
 495         FeaturePtr aDepFeat = std::dynamic_pointer_cast<ModelAPI_Feature>(*aDepIter);
 496         if (!aDepFeat.get()) { // so, it depends on the result and process the feature owner of it
 497           ResultPtr aDepRes = std::dynamic_pointer_cast<ModelAPI_Result>(*aDepIter);
 498           if (aDepRes.get()) {
 499             aDepFeat = (*aDepIter)->document()->feature(aDepRes);
 500           }
 501         }
 502         if (aDepFeat.get() && aDepFeat->data()->isValid()) {
 503           theReasons.insert(aDepFeat);
 504         }
 505       }
 506     }
 507   }
 508   if (theFeature->getKind() == "Part") {
 509     // part is not depended on its subs directly, but subs must be iterated anyway
 510     CompositeFeaturePtr aPart = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 511     int aNum = aPart->numberOfSubs();
 512     for(int a = 0; a < aNum; a++) {
 513       FeaturePtr aSub = aPart->subFeature(a);
 514       if (aSub.get() && aSub->data()->isValid()) {
 515         theReasons.insert(aSub);
 516       }
 517     }
 518   }
 519 }
 520
 521 bool Model_Update::processFeature(FeaturePtr theFeature)
 522 {
 523   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 524
 525   if (!theFeature->data()->isValid()) { // deleted feature, just remove from all containers
 526     if (myModified.find(theFeature) != myModified.end())
 527       myModified.erase(theFeature);
 528     return false;
 529   }
 530
 531   if (theFeature->isPersistentResult()) {
 532     if (!std::dynamic_pointer_cast<Model_Document>((theFeature)->document())->executeFeatures())
 533       return false;
 534   }
 535
 536   // check this feature is not yet checked or processed
 537   bool aIsModified = myModified.find(theFeature) != myModified.end();
 538   if (!aIsModified && myIsFinish) { // get info about the modification for features without preview
 539     if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated) {
 540       aIsModified = true;
 541       std::set<std::shared_ptr<ModelAPI_Feature> > aNewSet;
 542       // contains itself, so, we don't know which was the reason and the reason is any
 543       aNewSet.insert(theFeature);
 544       myModified[theFeature] = aNewSet;
 545     }
 546   }
 547
 548   if (myProcessed.find(theFeature) == myProcessed.end()) {
 549     myProcessed[theFeature] = 0;
 550   } else if (aIsModified) {
 551     int aCount = myProcessed[theFeature];
 552     if (aCount > 100) {
 553       // too many repetition of processing (in VS it may crash on 330 with stack overflow)
 554       Events_InfoMessage("Model_Update",
 555         "Feature '%1' is updated in infinitive loop").arg(theFeature->data()->name()).send();
 556       // to stop iteration
 557       myModified.clear();
 558       return false;
 559     }
 560     myProcessed[theFeature] = aCount + 1;
 561   }
 562
 563 #ifdef DEB_UPDATE
 564     std::wcout<<L"* Process feature "<<theFeature->name()<<std::endl;
 565 #endif
 566
 567   // update the sketch plane before the sketch sub-elements are recomputed
 568   // (otherwise sketch will update plane, modify subs, after executed, but with old subs edges)
 569     if (aIsModified && theFeature->getKind() == "Sketch") {
 570 #ifdef DEB_UPDATE
 571       std::wcout << L"****** Update sketch args " << theFeature->name() << std::endl;
 572 #endif
 573       AttributeSelectionPtr anExtSel = theFeature->selection("External");
 574       if (anExtSel.get()) {
 575         ResultPtr aContext = anExtSel->context();
 576         if (aContext.get() && aContext->document().get()) {
 577           FeaturePtr anExtBase = aContext->document()->feature(aContext);
 578           if (anExtBase.get()) {
 579             processFeature(anExtBase);
 580           }
 581           std::shared_ptr<GeomDataAPI_Point> anOrigin =
 582             std::dynamic_pointer_cast<GeomDataAPI_Point>(theFeature->attribute("Origin"));
 583           double anOX = anOrigin->x(), anOY = anOrigin->y(), anOZ = anOrigin->z();
 584           std::shared_ptr<GeomDataAPI_Dir> aDir =
 585             std::dynamic_pointer_cast<GeomDataAPI_Dir>(theFeature->attribute("DirX"));
 586           double aDX = aDir->x(), aDY = aDir->y(), aDZ = aDir->z();
 587           std::shared_ptr<GeomDataAPI_Dir> aNorm =
 588             std::dynamic_pointer_cast<GeomDataAPI_Dir>(theFeature->attribute("Norm"));
 589           double aNX = aNorm->x(), aNY = aNorm->y(), aNZ = aNorm->z();
 590           // update sketch plane
 591           updateArguments(theFeature);
 592           theFeature->attributeChanged("External"); // to recompute origin, direction and normal
 593           // check it is updated, so all must be changed
 594           if (anOrigin->x() != anOX || anOrigin->y() != anOY || anOrigin->z() != anOZ ||
 595               aDir->x() != aDX || aDir->y() != aDY || aDir->z() != aDZ ||
 596               aNorm->x() != aNX || aNorm->y() != aNY || aNorm->z() != aNZ)
 597           {
 598             std::set<FeaturePtr> aWholeR;
 599             allReasons(theFeature, aWholeR);
 600             std::set<FeaturePtr>::iterator aRIter = aWholeR.begin();
 601             for (; aRIter != aWholeR.end(); aRIter++) {
 602               if ((*aRIter)->data()->selection("External").get())
 603                 (*aRIter)->attributeChanged("External");
 604             }
 605           }
 606         }
 607       }
 608     }
 609
 610   if (!aIsModified) { // no modification is needed
 611     return false;
 612   }
 613
 614   // evaluate parameter before the sub-elements update:
 615   // it updates dependencies on evaluation (#1085)
 616   if (theFeature->getKind() == "Parameter") {
 617     theFeature->execute();
 618   }
 619
 620   bool isReferencedInvalid = false;
 621   // check all features this feature depended on (recursive call of updateFeature)
 622   std::set<FeaturePtr>& aReasons = myModified[theFeature];
 623   bool allSubsUsed = aReasons.find(theFeature) != aReasons.end();
 624   if (allSubsUsed) {
 625     // add all subs in aReasons and temporary remove "theFeature" to avoid processing itself
 626     allReasons(theFeature, aReasons);
 627     aReasons.erase(theFeature);
 628   }
 629   // take reasons one by one (they may be added during the feature process
 630   // (circle by the radius of sketch)
 631   std::set<FeaturePtr> aProcessedReasons;
 632   while(!aReasons.empty()) {
 633     FeaturePtr aReason = *(aReasons.begin());
 634 #ifdef DEB_UPDATE
 635     //cout<<theFeature->name()<<" process next reason "<<aReason->name()<<endl;
 636 #endif
 637     if (aReason != theFeature && (aReason)->data()->isValid()) {
 638       if (processFeature(aReason))
 639         aIsModified = true;
 640       // check validity of aReason once again because it may be removed by dependent feature
 641       // (e.g. by SketchPlugin_IntersectionPoint)
 642       if (!aReason->data()->isValid() ||
 643           aReason->data()->execState() == ModelAPI_StateInvalidArgument)
 644         isReferencedInvalid = true;
 645     }
 646     // searching for the next not used reason
 647     aProcessedReasons.insert(aReason);
 648     // check theFeature is still in the list of modified, because it may be removed sometimes
 649     // while updating SketchPlugin_Ellipse
 650     if (myModified.find(theFeature) != myModified.end())
 651       aReasons.erase(aReason);
 652     else
 653       break;
 654   }
 655   // restore the modified reasons: they will be used in the update of arguments
 656   if (allSubsUsed) { // restore theFeature in this set
 657     aProcessedReasons.insert(theFeature);
 658   }
 659   myModified[theFeature] = aProcessedReasons;
 660
 661   // do not execute the composite that contains the current
 662   bool isPostponedMain = false;
 663   CompositeFeaturePtr aCompos = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 664   if (theFeature->getKind() == "ExtrusionSketch" && aCompos.get()) {
 665     CompositeFeaturePtr aCurrentOwner =
 666       ModelAPI_Tools::compositeOwner(theFeature->document()->currentFeature(false));
 667     isPostponedMain = aCurrentOwner.get() && aCompos->isSub(aCurrentOwner);
 668   } else if (theFeature->getKind() == "Sketch" &&
 669     std::dynamic_pointer_cast<Model_Document>((theFeature)->document())->executeFeatures()) {
 670     // send event that sketch is prepared to be recomputed
 671     static Events_ID anID = Events_Loop::eventByName("SketchPrepared");
 672     std::shared_ptr<Events_Message> aMsg(new Events_Message(anID, this));
 673     Events_Loop* aLoop = Events_Loop::loop();
 674     // in case it is finish operation, flush for the sketch other events (#2450)
 675     aLoop->flush(aLoop->eventByName(EVENT_OBJECT_UPDATED));
 676     aLoop->send(aMsg);
 677     // check that sub-elements of sketch are updated => sketch must be re-processed
 678     std::set<FeaturePtr> aWholeR;
 679     allReasons(theFeature, aWholeR);
 680     std::set<FeaturePtr>::iterator aRIter = aWholeR.begin();
 681     for(; aRIter != aWholeR.end(); aRIter++) {
 682       if (myModified.find(*aRIter) != myModified.end()) {
 683         processFeature(theFeature);
 684         return true;
 685       }
 686     }
 687   }
 688
 689 #ifdef DEB_UPDATE
 690   std::wcout<<L"Update args "<<theFeature->name()<<std::endl;
 691 #endif
 692   // TestImport.py : after arguments are updated, theFeature may be removed
 693   if (!theFeature->data()->isValid())
 694     return false;
 695   // Update selection and parameters attributes first, before sub-features analysis (sketch plane).
 696   updateArguments(theFeature);
 697
 698   // add this feature to the processed right now to be able remove it from this list on
 699   // update signal during this feature execution
 700   myModified.erase(theFeature);
 701   if (myNotPersistentRefs.find(theFeature) != myNotPersistentRefs.end())
 702     myNotPersistentRefs.erase(theFeature);
 703   if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated)
 704     theFeature->data()->execState(ModelAPI_StateDone);
 705
 706   // this checking must be after the composite feature sub-elements processing:
 707   // composite feature status may depend on it's sub-elements
 708   if ((theFeature->data()->execState() == ModelAPI_StateInvalidArgument || isReferencedInvalid) &&
 709     theFeature->getKind() != "Part") {
 710       // don't disable Part because it will make disabled all the features
 711       // (performance and problems with the current feature)
 712   #ifdef DEB_UPDATE
 713     std::wcout<<L"Invalid args "<<theFeature->name()<<std::endl;
 714   #endif
 715     theFeature->eraseResults(false);
 716     redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 717     return true; // so, feature is modified (results are erased)
 718   }
 719
 720   // execute feature if it must be updated
 721   ModelAPI_ExecState aState = theFeature->data()->execState();
 722   if (aFactory->validate(theFeature)) {
 723     if (!isPostponedMain) {
 724       bool aDoExecute = true;
 725       if (myUpdateBlocked) {
 726         if (!theFeature->isStable() || (theFeature->getKind().size() > 6 &&
 727             theFeature->getKind().substr(0, 6) == "Sketch")) { // automatic update sketch elements
 728           aDoExecute = true;
 729         } else if (theFeature->results().size()) { // execute only not persistent results features
 730           aDoExecute = !theFeature->isPersistentResult();
 731         } else {
 732           aDoExecute = aState != ModelAPI_StateInvalidArgument;
 733         }
 734       }
 735       if (aDoExecute) {
 736         executeFeature(theFeature);
 737       } else {
 738         // store information that this feature must be executed later
 739         theFeature->data()->execState(ModelAPI_StateMustBeUpdated);
 740       }
 741     }
 742   } else {
 743     #ifdef DEB_UPDATE
 744       std::wcout<<L"Feature is not valid, erase results "<<theFeature->name()<<std::endl;
 745     #endif
 746     theFeature->eraseResults(false);
 747     redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 748   }
 749   return true;
 750 }
 751
 752 void Model_Update::redisplayWithResults(
 753   FeaturePtr theFeature, const ModelAPI_ExecState theState, bool theUpdateState)
 754 {
 755   // make updated and redisplay all results
 756   static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 757
 758   std::list<ResultPtr> allResults;
 759   ModelAPI_Tools::allResults(theFeature, allResults);
 760   std::list<ResultPtr>::iterator aRIter = allResults.begin();
 761   for (; aRIter != allResults.cend(); aRIter++) {
 762     std::shared_ptr<ModelAPI_Result> aRes = *aRIter;
 763     if (!aRes->isDisabled()) {
 764       // update state only for enabled results
 765       // (Placement Result Part may make the original Part Result as invalid)
 766       if (theUpdateState)
 767         aRes->data()->execState(theState);
 768     }
 769     if (theFeature->data()->updateID() > aRes->data()->updateID()) {
 770       aRes->data()->setUpdateID(theFeature->data()->updateID());
 771     }
 772     ModelAPI_EventCreator::get()->sendUpdated(aRes, EVENT_DISP);
 773   }
 774   // to redisplay "presentable" feature (for ex. distance constraint)
 775   ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
 776   if (theUpdateState)
 777     theFeature->data()->execState(theState);
 778 }
 779
 780 /// Updates the state by the referenced object: if something bad with it, set state for this one
 781 ModelAPI_ExecState stateByReference(ObjectPtr theTarget, const ModelAPI_ExecState theCurrent)
 782 {
 783   if (theTarget) {
 784     ModelAPI_ExecState aRefState = theTarget->data()->execState();
 785     if (aRefState == ModelAPI_StateMustBeUpdated) {
 786       if (theCurrent == ModelAPI_StateDone)
 787         return ModelAPI_StateMustBeUpdated;
 788     } else if (aRefState != ModelAPI_StateDone) {
 789       return ModelAPI_StateInvalidArgument;
 790     }
 791   }
 792   return theCurrent;
 793 }
 794
 795 void Model_Update::updateArguments(FeaturePtr theFeature) {
 796   // perform this method also for disabled features: to make "not done" state for
 797   // features referenced to the active and modified features
 798   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 799
 800   ModelAPI_ExecState aState = theFeature->data()->execState();
 801   if (aState == ModelAPI_StateExecFailed) { // try again failed feature: issue 577
 802     aState = ModelAPI_StateMustBeUpdated;
 803   }
 804   if (aState == ModelAPI_StateInvalidArgument) // a chance to be corrected
 805     aState = ModelAPI_StateMustBeUpdated;
 806   // check the parameters state
 807   // Integer
 808   {
 809     std::list<AttributePtr> anAttrinbutes =
 810       theFeature->data()->attributes(ModelAPI_AttributeInteger::typeId());
 811     std::list<AttributePtr>::iterator anIter = anAttrinbutes.begin();
 812     for(; anIter != anAttrinbutes.end(); anIter++) {
 813       AttributeIntegerPtr anAttribute =
 814         std::dynamic_pointer_cast<ModelAPI_AttributeInteger>(*anIter);
 815       if (anAttribute.get() && !anAttribute->text().empty()) {
 816         if (myIsParamUpdated) {
 817           ModelAPI_AttributeEvalMessage::send(anAttribute, this);
 818         }
 819         if (anAttribute->expressionInvalid()) {
 820           aState = ModelAPI_StateInvalidArgument;
 821         }
 822       }
 823     }
 824   }
 825   // Double
 826   {
 827     std::list<AttributePtr> aDoubles =
 828       theFeature->data()->attributes(ModelAPI_AttributeDouble::typeId());
 829     std::list<AttributePtr>::iterator aDoubleIter = aDoubles.begin();
 830     for(; aDoubleIter != aDoubles.end(); aDoubleIter++) {
 831       AttributeDoublePtr aDouble =
 832         std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(*aDoubleIter);
 833       if (aDouble.get() && !aDouble->text().empty()) {
 834         if (myIsParamUpdated) {
 835           ModelAPI_AttributeEvalMessage::send(aDouble, this);
 836         }
 837         if (aDouble->expressionInvalid()) {
 838           aState = ModelAPI_StateInvalidArgument;
 839         }
 840       }
 841     }
 842   }
 843   // Point
 844   {
 845     std::list<AttributePtr> anAttributes =
 846       theFeature->data()->attributes(GeomDataAPI_Point::typeId());
 847     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 848     for(; anIter != anAttributes.end(); anIter++) {
 849       AttributePointPtr aPointAttribute =
 850         std::dynamic_pointer_cast<GeomDataAPI_Point>(*anIter);
 851       if (aPointAttribute.get() && (!aPointAttribute->textX().empty() ||
 852           !aPointAttribute->textY().empty() || !aPointAttribute->textZ().empty())) {
 853         if (myIsParamUpdated) {
 854           ModelAPI_AttributeEvalMessage::send(aPointAttribute, this);
 855         }
 856         if ((!aPointAttribute->textX().empty() && aPointAttribute->expressionInvalid(0)) ||
 857           (!aPointAttribute->textY().empty() && aPointAttribute->expressionInvalid(1)) ||
 858           (!aPointAttribute->textZ().empty() && aPointAttribute->expressionInvalid(2)))
 859           aState = ModelAPI_StateInvalidArgument;
 860       }
 861     }
 862   }
 863   // Point2D
 864   {
 865     std::list<AttributePtr> anAttributes =
 866       theFeature->data()->attributes(GeomDataAPI_Point2D::typeId());
 867     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 868     for(; anIter != anAttributes.end(); anIter++) {
 869       AttributePoint2DPtr aPoint2DAttribute =
 870         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(*anIter);
 871       if (aPoint2DAttribute.get()) {
 872         if (myIsParamUpdated && (!aPoint2DAttribute->textX().empty() ||
 873             !aPoint2DAttribute->textY().empty())) {
 874           ModelAPI_AttributeEvalMessage::send(aPoint2DAttribute, this);
 875         }
 876         if ((!aPoint2DAttribute->textX().empty() && aPoint2DAttribute->expressionInvalid(0)) ||
 877           (!aPoint2DAttribute->textY().empty() && aPoint2DAttribute->expressionInvalid(1)))
 878           aState = ModelAPI_StateInvalidArgument;
 879       }
 880     }
 881   }
 882   // update the selection attributes if any
 883   std::list<AttributePtr> aRefs =
 884     theFeature->data()->attributes(ModelAPI_AttributeSelection::typeId());
 885   std::list<AttributePtr>::iterator aRefsIter = aRefs.begin();
 886   for (; aRefsIter != aRefs.end(); aRefsIter++) {
 887     std::shared_ptr<ModelAPI_AttributeSelection> aSel =
 888       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(*aRefsIter);
 889     ObjectPtr aContext = aSel->context();
 890     // update argument only if the referenced object is ready to use
 891     if (aContext.get() && !aContext->isDisabled()) {
 892       if (isReason(theFeature, aContext)) {
 893         if (!aSel->update()) { // this must be done on execution since it may be long operation
 894           bool isObligatory = !aFactory->isNotObligatory(
 895             theFeature->getKind(), theFeature->data()->id(aSel)) &&
 896             aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 897           if (isObligatory)
 898             aState = ModelAPI_StateInvalidArgument;
 899         }
 900       }
 901     } else if (aContext.get()) {
 902       // here it may be not obligatory, but if the reference is wrong, it should not be correct
 903       bool isObligatory = aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 904       if (isObligatory)
 905         aState = ModelAPI_StateInvalidArgument;
 906     } else if (theFeature->getKind() == "Sketch" && aSel->id() == "External" &&
 907                aSel->isInitialized()) {
 908       // #19703 : if sketch plane was selected, but after context disappears, it must become invalid
 909       aSel->update();
 910       if (aSel->isInvalid()) {
 911           aState = ModelAPI_StateInvalidArgument;
 912       }
 913     }
 914   }
 915   // update the selection list attributes if any
 916   aRefs = theFeature->data()->attributes(ModelAPI_AttributeSelectionList::typeId());
 917   for (aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
 918     std::shared_ptr<ModelAPI_AttributeSelectionList> aSel =
 919       std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(*aRefsIter);
 920     // #19071 : avoid sending of update event in cycle
 921     bool aWasBlocked = theFeature->data()->blockSendAttributeUpdated(true);
 922     // list to keep the shared pointers while update is blocked (in messages raw poiters are used)
 923     std::list<AttributeSelectionPtr> anAttrList;
 924     for(int a = aSel->size() - 1; a >= 0; a--) {
 925       std::shared_ptr<ModelAPI_AttributeSelection> aSelAttr =
 926         std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(aSel->value(a));
 927       if (aSelAttr) {
 928         ObjectPtr aContext = aSelAttr->context();
 929         // update argument only if the referenced object is ready to use
 930         if (aContext.get() && !aContext->isDisabled()) {
 931           if (isReason(theFeature, aContext)) {
 932             anAttrList.push_back(aSelAttr);
 933             if (!aSelAttr->update()) {
 934               bool isObligatory = !aFactory->isNotObligatory(
 935                 theFeature->getKind(), theFeature->data()->id(aSel)) &&
 936                 aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 937               if (isObligatory)
 938                 aState = ModelAPI_StateInvalidArgument;
 939             }
 940           }
 941         } else if (aContext.get()) {
 942           // here it may be not obligatory, but if the reference is wrong, it should not be correct
 943           bool isObligatory = aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 944           if (isObligatory)
 945             aState = ModelAPI_StateInvalidArgument;
 946         }
 947       }
 948     }
 949     if (!aWasBlocked)
 950       theFeature->data()->blockSendAttributeUpdated(false);
 951   }
 952
 953   if (aState != ModelAPI_StateDone)
 954     theFeature->data()->execState(aState);
 955 }
 956
 957 bool Model_Update::isReason(std::shared_ptr<ModelAPI_Feature>& theFeature,
 958      std::shared_ptr<ModelAPI_Object> theReason)
 959 {
 960   std::map<std::shared_ptr<ModelAPI_Feature>, std::set<std::shared_ptr<ModelAPI_Feature> > >
 961     ::iterator aReasonsIt = myModified.find(theFeature);
 962   if (aReasonsIt != myModified.end()) {
 963     if (aReasonsIt->second.find(theFeature) != aReasonsIt->second.end())
 964       return true; // any is reason if it contains itself
 965     FeaturePtr aReasFeat = std::dynamic_pointer_cast<ModelAPI_Feature>(theReason);
 966     if (!aReasFeat.get()) { // try to get feature of this result
 967       ResultPtr aReasRes = std::dynamic_pointer_cast<ModelAPI_Result>(theReason);
 968       if (aReasRes.get())
 969         aReasFeat = theReason->document()->feature(aReasRes);
 970     }
 971     if (aReasonsIt->second.find(aReasFeat) != aReasonsIt->second.end())
 972       return true;
 973   }
 974   // another try: postponed modification by not-persistences
 975   std::map<std::shared_ptr<ModelAPI_Feature>, std::set<std::shared_ptr<ModelAPI_Feature> > >
 976     ::iterator aNotPersist = myNotPersistentRefs.find(theFeature);
 977   if (aNotPersist != myNotPersistentRefs.end()) {
 978     FeaturePtr aReasFeat = std::dynamic_pointer_cast<ModelAPI_Feature>(theReason);
 979     if (!aReasFeat.get()) { // try to get feature of this result
 980       ResultPtr aReasRes = std::dynamic_pointer_cast<ModelAPI_Result>(theReason);
 981       if (aReasRes.get())
 982         aReasFeat = theReason->document()->feature(aReasRes);
 983     }
 984     if (aNotPersist->second.find(aReasFeat) != aNotPersist->second.end())
 985       return true;
 986   }
 987
 988   // this case only for not-previewed items update state, nothing is changed in args for it
 989   return false;
 990 }
 991
 992 void Model_Update::executeFeature(FeaturePtr theFeature)
 993 {
 994 #ifdef DEB_UPDATE
 995   std::wcout<<L"Execute Feature "<<theFeature->name()<<std::endl;
 996 #endif
 997   // execute in try-catch to avoid internal problems of the feature
 998   ModelAPI_ExecState aState = ModelAPI_StateDone;
 999   theFeature->data()->execState(ModelAPI_StateDone);
1000   try {
1001     theFeature->execute();
1002     if (theFeature->data()->execState() != ModelAPI_StateDone) {
1003       aState = ModelAPI_StateExecFailed;
1004     } else {
1005       aState = ModelAPI_StateDone;
1006     }
1007   } catch(...) {
1008     aState = ModelAPI_StateExecFailed;
1009     Events_InfoMessage("Model_Update",
1010       "Feature %1 has failed during the execution").arg(theFeature->getKind()).send();
1011   }
1012   // The macro feature has to be deleted in any case even its execution is failed
1013   myWaitForFinish.insert(theFeature);
1014   if (aState != ModelAPI_StateDone) {
1015     theFeature->eraseResults(false);
1016   }
1017   theFeature->data()->setUpdateID(ModelAPI_Session::get()->transactionID());
1018   redisplayWithResults(theFeature, aState);
1019 }
1020
1021 // it is called on GUI edit of feature start
1022 // LCOV_EXCL_START
1023 void Model_Update::updateStability(void* theSender)
1024 {
1025   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
1026   if (theSender) {
1027     bool added = false; // object may be was crated
1028     ModelAPI_Object* aSender = static_cast<ModelAPI_Object*>(theSender);
1029     if (aSender && aSender->document()) {
1030       FeaturePtr aFeatureSender =
1031         std::dynamic_pointer_cast<ModelAPI_Feature>(aSender->data()->owner());
1032       if (aFeatureSender.get()) {
1033         Model_Objects* aDocObjects =
1034           std::dynamic_pointer_cast<Model_Document>(aSender->document())->objects();
1035         if (aDocObjects) {
1036           //aDocObjects->synchronizeBackRefs();
1037           // remove or add all concealment refs from this feature
1038           std::list<std::pair<std::string, std::list<ObjectPtr> > > aRefs;
1039           aSender->data()->referencesToObjects(aRefs);
1040           std::list<std::pair<std::string, std::list<ObjectPtr> > >::iterator
1041             aRefIt = aRefs.begin();
1042           for(; aRefIt != aRefs.end(); aRefIt++) {
1043             if (!aFactory->isConcealed(aFeatureSender->getKind(), aRefIt->first))
1044               // take into account only concealed references
1045               // (do not remove the sketch constraint and the edge on constraint edit)
1046               continue;
1047             std::list<ObjectPtr>& aRefFeaturesList = aRefIt->second;
1048             std::list<ObjectPtr>::iterator aReferenced = aRefFeaturesList.begin();
1049             for(; aReferenced != aRefFeaturesList.end(); aReferenced++) {
1050                // stability is only on results: feature to feature reference mean nested
1051               // features, that will remove nesting references
1052               if (aReferenced->get() && (*aReferenced)->data()->isValid() &&
1053                 (*aReferenced)->groupName() != ModelAPI_Feature::group()) {
1054                 std::shared_ptr<Model_Data> aData =
1055                   std::dynamic_pointer_cast<Model_Data>((*aReferenced)->data());
1056                 if (aFeatureSender->isStable()) {
1057                   aData->addBackReference(aFeatureSender, aRefIt->first);
1058                 } else {
1059                   aData->removeBackReference(aFeatureSender, aRefIt->first);
1060                   added = true; // remove of concealment may be caused creation of some result
1061                 }
1062               }
1063             }
1064           }
1065         }
1066       }
1067     }
1068     if (added) {
1069       static Events_Loop* aLoop = Events_Loop::loop();
1070       static Events_ID kEventCreated = aLoop->eventByName(EVENT_OBJECT_CREATED);
1071       aLoop->flush(kEventCreated);
1072     }
1073   }
1074 }
1075 // LCOV_EXCL_STOP
1076
1077 void Model_Update::updateSelection(const std::set<std::shared_ptr<ModelAPI_Object> >& theObjects)
1078 {
1079   std::set<std::shared_ptr<ModelAPI_Object> >::iterator anObj = theObjects.begin();
1080   for(; anObj != theObjects.end(); anObj++) {
1081     std::list<AttributePtr> aRefs =
1082       (*anObj)->data()->attributes(ModelAPI_AttributeSelection::typeId());
1083     std::list<AttributePtr>::iterator aRefsIter = aRefs.begin();
1084     for (; aRefsIter != aRefs.end(); aRefsIter++) {
1085       AttributeSelectionPtr aSel =
1086         std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(*aRefsIter);
1087       bool aRemove = false;
1088       aSel->updateInHistory(aRemove);
1089     }
1090     // update the selection list attributes if any
1091     aRefs = (*anObj)->data()->attributes(ModelAPI_AttributeSelectionList::typeId());
1092     for (aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
1093       std::set<int> aRemoveSet;
1094       std::shared_ptr<ModelAPI_AttributeSelectionList> aSel =
1095         std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(*aRefsIter);
1096       for(int a = aSel->size() - 1; a >= 0; a--) {
1097         AttributeSelectionPtr aSelAttr =
1098           std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(aSel->value(a));
1099         if (aSelAttr.get()) {
1100           bool aRemove = false;
1101           aSelAttr->updateInHistory(aRemove);
1102           if (aRemove) {
1103             aRemoveSet.insert(a);
1104           }
1105         }
1106       }
1107       aSel->remove(aRemoveSet);
1108     }
1109   }
1110 }