src/Model/Model_Update.cpp

   1 // Copyright (C) 2014-2020  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         if (myUpdateBlocked) { // execute this feature anyway to show the current result
 350           /*if (!anUpdated->isStable() && anUpdated->results().size() && (
 351               anUpdated->firstResult()->groupName() == ModelAPI_ResultBody::group() ||
 352               anUpdated->firstResult()->groupName() == ModelAPI_ResultPart::group())) {
 353             if (aFactory->validate(anUpdated)) {
 354               executeFeature(anUpdated);
 355               redisplayWithResults(anUpdated, ModelAPI_StateNothing, false);
 356               static Events_ID EVENT_DISP = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 357               aLoop->flush(EVENT_DISP);
 358             }
 359           }*/
 360         }
 361       } else {
 362         // process the updated result as update of features that refers to this result
 363         const std::set<std::shared_ptr<ModelAPI_Attribute> >&
 364           aRefs = (*anObjIter)->data()->refsToMe();
 365         std::set<std::shared_ptr<ModelAPI_Attribute> >::const_iterator aRefIter = aRefs.cbegin();
 366         FeaturePtr aReason;
 367         ResultPtr aReasonResult = std::dynamic_pointer_cast<ModelAPI_Result>(*anObjIter);
 368         if (aReasonResult.get())
 369           aReason = (*anObjIter)->document()->feature(aReasonResult);
 370         for(; aRefIter != aRefs.cend(); aRefIter++) {
 371           if (!(*aRefIter)->owner()->data()->isValid())
 372             continue;
 373           anUpdated = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRefIter)->owner());
 374           if (anUpdated.get()) {
 375             if (addModified(anUpdated, aReason))
 376               aSomeModified = true;
 377           }
 378         }
 379       }
 380     }
 381     // this event is for solver update, not here, do not react immediately
 382     if (aSomeModified) {
 383         processFeatures();
 384     }
 385   } else if (theMessage->eventID() == kOpFinishEvent || theMessage->eventID() == kOpAbortEvent ||
 386       theMessage->eventID() == kOpStartEvent) {
 387     myIsPreviewBlocked = false;
 388
 389     if (theMessage->eventID() == kOpFinishEvent) {// if update is blocked, skip
 390       myIsFinish = true;
 391       // add features that wait for finish as modified
 392       std::map<std::shared_ptr<ModelAPI_Feature>, std::set<std::shared_ptr<ModelAPI_Feature> > >::
 393         iterator aFeature = myProcessOnFinish.begin();
 394       for(; aFeature != myProcessOnFinish.end(); aFeature++) {
 395         if (aFeature->first->data()->isValid()) {// there may be already removed while wait
 396           if (aFeature->second.empty()) {
 397             addModified(aFeature->first, FeaturePtr());
 398             continue;
 399           }
 400           std::set<std::shared_ptr<ModelAPI_Feature> >::iterator aReasons;
 401           for(aReasons = aFeature->second.begin(); aReasons != aFeature->second.end(); aReasons++){
 402             addModified(aFeature->first, *aReasons);
 403           }
 404         }
 405       }
 406       myIsFinish = false;
 407     }
 408     // processed features must be only on finish, so clear anyway (to avoid re-import on load)
 409     myProcessOnFinish.clear();
 410
 411     // #2156: current must be sketch, left after the macro execution
 412     DocumentPtr anActiveDoc = ModelAPI_Session::get()->activeDocument();
 413     FeaturePtr aCurrent;
 414     if (anActiveDoc.get())
 415       aCurrent = anActiveDoc->currentFeature(false);
 416
 417     if (!(theMessage->eventID() == kOpStartEvent)) {
 418       processFeatures(false);
 419     }
 420
 421     if (anActiveDoc.get() && aCurrent.get() && aCurrent->data()->isValid()) {
 422       if (anActiveDoc->currentFeature(false) != aCurrent &&
 423           ModelAPI_Tools::compositeOwner(anActiveDoc->currentFeature(false)) == aCurrent)
 424         anActiveDoc->setCurrentFeature(aCurrent, false); // #2156 make the current feature back
 425     }
 426
 427     // remove all macros before clearing all created
 428     std::set<FeaturePtr>::iterator anUpdatedIter = myWaitForFinish.begin();
 429     while(anUpdatedIter != myWaitForFinish.end()) {
 430       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(*anUpdatedIter);
 431       if (aFeature.get()) {
 432         // remove macro on finish
 433         if (aFeature->isMacro()) {
 434           aFeature->document()->removeFeature(aFeature);
 435           myWaitForFinish.erase(aFeature);
 436         }
 437         // to avoid the map update problems on "remove"
 438         if (myWaitForFinish.find(aFeature) == myWaitForFinish.end()) {
 439           anUpdatedIter = myWaitForFinish.begin();
 440         } else {
 441           anUpdatedIter++;
 442         }
 443       } else {
 444         anUpdatedIter++;
 445       }
 446     }
 447     // the redisplay signal should be flushed in order
 448     // to erase the feature presentation in the viewer
 449     // if should be done after removeFeature() of document,
 450     // by this reason, upper processFeatures() do not perform this flush
 451     Events_Loop::loop()->flush(kRedisplayEvent);
 452
 453     // in the end of transaction everything is updated, so clear the old objects
 454     //myIsParamUpdated = false; // to avoid problems in sprocket.py parameter update
 455     myWaitForFinish.clear();
 456   } else if (theMessage->eventID() == kReorderEvent) {
 457     std::shared_ptr<ModelAPI_OrderUpdatedMessage> aMsg =
 458       std::dynamic_pointer_cast<ModelAPI_OrderUpdatedMessage>(theMessage);
 459     if (aMsg->reordered().get())
 460       addModified(aMsg->reordered(), aMsg->reordered()); // to update all attributes
 461   }
 462 }
 463
 464 void Model_Update::processFeatures(const bool theFlushRedisplay)
 465 {
 466    // perform update of everything if it is not performed right now or any preview is blocked
 467   if (!myIsProcessed && !myIsPreviewBlocked) {
 468     myIsProcessed = true;
 469     #ifdef DEB_UPDATE
 470       std::cout<<"****** Start processing"<<std::endl;
 471     #endif
 472
 473     while(!myModified.empty()) {
 474       processFeature(myModified.begin()->first);
 475     }
 476     myIsProcessed = false;
 477
 478     // to update the object browser if something is updated/created during executions
 479     static Events_Loop* aLoop = Events_Loop::loop();
 480     static const Events_ID kCreatedEvent= aLoop->eventByName(EVENT_OBJECT_CREATED);
 481     aLoop->flush(kCreatedEvent);
 482     static const Events_ID kUpdatedEvent = aLoop->eventByName(EVENT_OBJECT_UPDATED);
 483     aLoop->flush(kUpdatedEvent);
 484
 485     // flush to update display
 486     if (theFlushRedisplay) {
 487       static Events_ID EVENT_DISP = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 488       aLoop->flush(EVENT_DISP);
 489     }
 490     #ifdef DEB_UPDATE
 491       std::cout<<"****** End processing"<<std::endl;
 492     #endif
 493     myProcessed.clear();
 494   }
 495 }
 496
 497 // collects all the features this feature depends on: reasons
 498 static void allReasons(FeaturePtr theFeature, std::set<FeaturePtr>& theReasons) {
 499   std::list<std::pair<std::string, std::list<std::shared_ptr<ModelAPI_Object> > > > aDeps;
 500   theFeature->data()->referencesToObjects(aDeps);
 501   std::list<std::pair<std::string, std::list<std::shared_ptr<ModelAPI_Object> > > >::iterator
 502     anAttrsIter = aDeps.begin();
 503   for(; anAttrsIter != aDeps.end(); anAttrsIter++) {
 504     if (theFeature->attribute(anAttrsIter->first)->isArgument()) {
 505       std::list<std::shared_ptr<ModelAPI_Object> >::iterator aDepIter = anAttrsIter->second.begin();
 506       for(; aDepIter != anAttrsIter->second.end(); aDepIter++) {
 507         FeaturePtr aDepFeat = std::dynamic_pointer_cast<ModelAPI_Feature>(*aDepIter);
 508         if (!aDepFeat.get()) { // so, it depends on the result and process the feature owner of it
 509           ResultPtr aDepRes = std::dynamic_pointer_cast<ModelAPI_Result>(*aDepIter);
 510           if (aDepRes.get()) {
 511             aDepFeat = (*aDepIter)->document()->feature(aDepRes);
 512           }
 513         }
 514         if (aDepFeat.get() && aDepFeat->data()->isValid()) {
 515           theReasons.insert(aDepFeat);
 516         }
 517       }
 518     }
 519   }
 520   if (theFeature->getKind() == "Part") {
 521     // part is not depended on its subs directly, but subs must be iterated anyway
 522     CompositeFeaturePtr aPart = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 523     int aNum = aPart->numberOfSubs();
 524     for(int a = 0; a < aNum; a++) {
 525       FeaturePtr aSub = aPart->subFeature(a);
 526       if (aSub.get() && aSub->data()->isValid()) {
 527         theReasons.insert(aSub);
 528       }
 529     }
 530   }
 531 }
 532
 533 bool Model_Update::processFeature(FeaturePtr theFeature)
 534 {
 535   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 536
 537   if (!theFeature->data()->isValid()) { // deleted feature, just remove from all containers
 538     if (myModified.find(theFeature) != myModified.end())
 539       myModified.erase(theFeature);
 540     return false;
 541   }
 542
 543   if (theFeature->isPersistentResult()) {
 544     if (!std::dynamic_pointer_cast<Model_Document>((theFeature)->document())->executeFeatures())
 545       return false;
 546   }
 547
 548   // check this feature is not yet checked or processed
 549   bool aIsModified = myModified.find(theFeature) != myModified.end();
 550   if (!aIsModified && myIsFinish) { // get info about the modification for features without preview
 551     if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated) {
 552       aIsModified = true;
 553       std::set<std::shared_ptr<ModelAPI_Feature> > aNewSet;
 554       // contains itself, so, we don't know which was the reason and the reason is any
 555       aNewSet.insert(theFeature);
 556       myModified[theFeature] = aNewSet;
 557     }
 558   }
 559
 560   if (myProcessed.find(theFeature) == myProcessed.end()) {
 561     myProcessed[theFeature] = 0;
 562   } else if (aIsModified) {
 563     int aCount = myProcessed[theFeature];
 564     if (aCount > 100) {
 565       // too many repetition of processing (in VS it may crash on 330 with stack overflow)
 566       Events_InfoMessage("Model_Update",
 567         "Feature '%1' is updated in infinitive loop").arg(theFeature->data()->name()).send();
 568       // to stop iteration
 569       myModified.clear();
 570       return false;
 571     }
 572     myProcessed[theFeature] = aCount + 1;
 573   }
 574
 575 #ifdef DEB_UPDATE
 576     std::wcout<<L"* Process feature "<<theFeature->name()<<std::endl;
 577 #endif
 578
 579   // update the sketch plane before the sketch sub-elements are recomputed
 580   // (otherwise sketch will update plane, modify subs, after executed, but with old subs edges)
 581     if (aIsModified && theFeature->getKind() == "Sketch") {
 582 #ifdef DEB_UPDATE
 583       std::wcout << L"****** Update sketch args " << theFeature->name() << std::endl;
 584 #endif
 585       AttributeSelectionPtr anExtSel = theFeature->selection("External");
 586       if (anExtSel.get()) {
 587         ResultPtr aContext = anExtSel->context();
 588         if (aContext.get() && aContext->document().get()) {
 589           FeaturePtr anExtBase = aContext->document()->feature(aContext);
 590           if (anExtBase.get()) {
 591             processFeature(anExtBase);
 592           }
 593           std::shared_ptr<GeomDataAPI_Point> anOrigin =
 594             std::dynamic_pointer_cast<GeomDataAPI_Point>(theFeature->attribute("Origin"));
 595           double anOX = anOrigin->x(), anOY = anOrigin->y(), anOZ = anOrigin->z();
 596           std::shared_ptr<GeomDataAPI_Dir> aDir =
 597             std::dynamic_pointer_cast<GeomDataAPI_Dir>(theFeature->attribute("DirX"));
 598           double aDX = aDir->x(), aDY = aDir->y(), aDZ = aDir->z();
 599           std::shared_ptr<GeomDataAPI_Dir> aNorm =
 600             std::dynamic_pointer_cast<GeomDataAPI_Dir>(theFeature->attribute("Norm"));
 601           double aNX = aNorm->x(), aNY = aNorm->y(), aNZ = aNorm->z();
 602           // update sketch plane
 603           updateArguments(theFeature);
 604           theFeature->attributeChanged("External"); // to recompute origin, direction and normal
 605           // check it is updated, so all must be changed
 606           if (anOrigin->x() != anOX || anOrigin->y() != anOY || anOrigin->z() != anOZ ||
 607               aDir->x() != aDX || aDir->y() != aDY || aDir->z() != aDZ ||
 608               aNorm->x() != aNX || aNorm->y() != aNY || aNorm->z() != aNZ)
 609           {
 610             std::set<FeaturePtr> aWholeR;
 611             allReasons(theFeature, aWholeR);
 612             std::set<FeaturePtr>::iterator aRIter = aWholeR.begin();
 613             for (; aRIter != aWholeR.end(); aRIter++) {
 614               if ((*aRIter)->data()->selection("External").get())
 615                 (*aRIter)->attributeChanged("External");
 616             }
 617           }
 618         }
 619       }
 620     }
 621
 622   if (!aIsModified) { // no modification is needed
 623     return false;
 624   }
 625
 626   // evaluate parameter before the sub-elements update:
 627   // it updates dependencies on evaluation (#1085)
 628   if (theFeature->getKind() == "Parameter") {
 629     theFeature->execute();
 630   }
 631
 632   bool isReferencedInvalid = false;
 633   // check all features this feature depended on (recursive call of updateFeature)
 634   std::set<FeaturePtr>& aReasons = myModified[theFeature];
 635   bool allSubsUsed = aReasons.find(theFeature) != aReasons.end();
 636   if (allSubsUsed) {
 637     // add all subs in aReasons and temporary remove "theFeature" to avoid processing itself
 638     allReasons(theFeature, aReasons);
 639     aReasons.erase(theFeature);
 640   }
 641   // take reasons one by one (they may be added during the feature process
 642   // (circle by the radius of sketch)
 643   std::set<FeaturePtr> aProcessedReasons;
 644   while(!aReasons.empty()) {
 645     FeaturePtr aReason = *(aReasons.begin());
 646 #ifdef DEB_UPDATE
 647     //cout<<theFeature->name()<<" process next reason "<<aReason->name()<<endl;
 648 #endif
 649     if (aReason != theFeature && (aReason)->data()->isValid()) {
 650       if (processFeature(aReason))
 651         aIsModified = true;
 652       // check validity of aReason once again because it may be removed by dependent feature
 653       // (e.g. by SketchPlugin_IntersectionPoint)
 654       if (!aReason->data()->isValid() ||
 655           aReason->data()->execState() == ModelAPI_StateInvalidArgument)
 656         isReferencedInvalid = true;
 657     }
 658     // searching for the next not used reason
 659     aProcessedReasons.insert(aReason);
 660     // check theFeature is still in the list of modified, because it may be removed sometimes
 661     // while updating SketchPlugin_Ellipse
 662     if (myModified.find(theFeature) != myModified.end())
 663       aReasons.erase(aReason);
 664     else
 665       break;
 666   }
 667   // restore the modified reasons: they will be used in the update of arguments
 668   if (allSubsUsed) { // restore theFeature in this set
 669     aProcessedReasons.insert(theFeature);
 670   }
 671   myModified[theFeature] = aProcessedReasons;
 672
 673   // do not execute the composite that contains the current
 674   bool isPostponedMain = false;
 675   CompositeFeaturePtr aCompos = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 676   if (theFeature->getKind() == "ExtrusionSketch" && aCompos.get()) {
 677     CompositeFeaturePtr aCurrentOwner =
 678       ModelAPI_Tools::compositeOwner(theFeature->document()->currentFeature(false));
 679     isPostponedMain = aCurrentOwner.get() && aCompos->isSub(aCurrentOwner);
 680   } else if (theFeature->getKind() == "Sketch" &&
 681     std::dynamic_pointer_cast<Model_Document>((theFeature)->document())->executeFeatures()) {
 682     // send event that sketch is prepared to be recomputed
 683     static Events_ID anID = Events_Loop::eventByName("SketchPrepared");
 684     std::shared_ptr<Events_Message> aMsg(new Events_Message(anID, this));
 685     Events_Loop* aLoop = Events_Loop::loop();
 686     // in case it is finish operation, flush for the sketch other events (#2450)
 687     aLoop->flush(aLoop->eventByName(EVENT_OBJECT_UPDATED));
 688     aLoop->send(aMsg);
 689     // check that sub-elements of sketch are updated => sketch must be re-processed
 690     std::set<FeaturePtr> aWholeR;
 691     allReasons(theFeature, aWholeR);
 692     std::set<FeaturePtr>::iterator aRIter = aWholeR.begin();
 693     for(; aRIter != aWholeR.end(); aRIter++) {
 694       if (myModified.find(*aRIter) != myModified.end()) {
 695         processFeature(theFeature);
 696         return true;
 697       }
 698     }
 699   }
 700
 701 #ifdef DEB_UPDATE
 702   std::wcout<<L"Update args "<<theFeature->name()<<std::endl;
 703 #endif
 704   // TestImport.py : after arguments are updated, theFeature may be removed
 705   if (!theFeature->data()->isValid())
 706     return false;
 707   // Update selection and parameters attributes first, before sub-features analysis (sketch plane).
 708   updateArguments(theFeature);
 709
 710   // add this feature to the processed right now to be able remove it from this list on
 711   // update signal during this feature execution
 712   myModified.erase(theFeature);
 713   if (myNotPersistentRefs.find(theFeature) != myNotPersistentRefs.end())
 714     myNotPersistentRefs.erase(theFeature);
 715   if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated)
 716     theFeature->data()->execState(ModelAPI_StateDone);
 717
 718   // this checking must be after the composite feature sub-elements processing:
 719   // composite feature status may depend on it's sub-elements
 720   if ((theFeature->data()->execState() == ModelAPI_StateInvalidArgument || isReferencedInvalid) &&
 721     theFeature->getKind() != "Part") {
 722       // don't disable Part because it will make disabled all the features
 723       // (performance and problems with the current feature)
 724   #ifdef DEB_UPDATE
 725     std::wcout<<L"Invalid args "<<theFeature->name()<<std::endl;
 726   #endif
 727     theFeature->eraseResults(false);
 728     redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 729     return true; // so, feature is modified (results are erased)
 730   }
 731
 732   // execute feature if it must be updated
 733   ModelAPI_ExecState aState = theFeature->data()->execState();
 734   if (aFactory->validate(theFeature)) {
 735     if (!isPostponedMain) {
 736       bool aDoExecute = true;
 737       if (myUpdateBlocked) {
 738         if (!theFeature->isStable()) {
 739           aDoExecute = true;
 740         } else if (theFeature->results().size()) { // execute only not persistent results features
 741           aDoExecute = !theFeature->isPersistentResult();
 742         } else {
 743           aDoExecute = aState != ModelAPI_StateInvalidArgument;
 744         }
 745       }
 746       if (aDoExecute) {
 747         executeFeature(theFeature);
 748       } else {
 749         // store information that this feature must be executed later
 750         theFeature->data()->execState(ModelAPI_StateMustBeUpdated);
 751       }
 752     }
 753   } else {
 754     #ifdef DEB_UPDATE
 755       std::wcout<<L"Feature is not valid, erase results "<<theFeature->name()<<std::endl;
 756     #endif
 757     theFeature->eraseResults(false);
 758     redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 759   }
 760   return true;
 761 }
 762
 763 void Model_Update::redisplayWithResults(
 764   FeaturePtr theFeature, const ModelAPI_ExecState theState, bool theUpdateState)
 765 {
 766   // make updated and redisplay all results
 767   static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 768
 769   std::list<ResultPtr> allResults;
 770   ModelAPI_Tools::allResults(theFeature, allResults);
 771   std::list<ResultPtr>::iterator aRIter = allResults.begin();
 772   for (; aRIter != allResults.cend(); aRIter++) {
 773     std::shared_ptr<ModelAPI_Result> aRes = *aRIter;
 774     if (!aRes->isDisabled()) {
 775       // update state only for enabled results
 776       // (Placement Result Part may make the original Part Result as invalid)
 777       if (theUpdateState)
 778         aRes->data()->execState(theState);
 779     }
 780     if (theFeature->data()->updateID() > aRes->data()->updateID()) {
 781       aRes->data()->setUpdateID(theFeature->data()->updateID());
 782     }
 783     ModelAPI_EventCreator::get()->sendUpdated(aRes, EVENT_DISP);
 784   }
 785   // to redisplay "presentable" feature (for ex. distance constraint)
 786   ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
 787   if (theUpdateState)
 788     theFeature->data()->execState(theState);
 789 }
 790
 791 /// Updates the state by the referenced object: if something bad with it, set state for this one
 792 ModelAPI_ExecState stateByReference(ObjectPtr theTarget, const ModelAPI_ExecState theCurrent)
 793 {
 794   if (theTarget) {
 795     ModelAPI_ExecState aRefState = theTarget->data()->execState();
 796     if (aRefState == ModelAPI_StateMustBeUpdated) {
 797       if (theCurrent == ModelAPI_StateDone)
 798         return ModelAPI_StateMustBeUpdated;
 799     } else if (aRefState != ModelAPI_StateDone) {
 800       return ModelAPI_StateInvalidArgument;
 801     }
 802   }
 803   return theCurrent;
 804 }
 805
 806 void Model_Update::updateArguments(FeaturePtr theFeature) {
 807   // perform this method also for disabled features: to make "not done" state for
 808   // features referenced to the active and modified features
 809   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 810
 811   ModelAPI_ExecState aState = theFeature->data()->execState();
 812   if (aState == ModelAPI_StateExecFailed) { // try again failed feature: issue 577
 813     aState = ModelAPI_StateMustBeUpdated;
 814   }
 815   if (aState == ModelAPI_StateInvalidArgument) // a chance to be corrected
 816     aState = ModelAPI_StateMustBeUpdated;
 817   // check the parameters state
 818   // Integer
 819   {
 820     std::list<AttributePtr> anAttrinbutes =
 821       theFeature->data()->attributes(ModelAPI_AttributeInteger::typeId());
 822     std::list<AttributePtr>::iterator anIter = anAttrinbutes.begin();
 823     for(; anIter != anAttrinbutes.end(); anIter++) {
 824       AttributeIntegerPtr anAttribute =
 825         std::dynamic_pointer_cast<ModelAPI_AttributeInteger>(*anIter);
 826       if (anAttribute.get() && !anAttribute->text().empty()) {
 827         if (myIsParamUpdated) {
 828           ModelAPI_AttributeEvalMessage::send(anAttribute, this);
 829         }
 830         if (anAttribute->expressionInvalid()) {
 831           aState = ModelAPI_StateInvalidArgument;
 832         }
 833       }
 834     }
 835   }
 836   // Double
 837   {
 838     std::list<AttributePtr> aDoubles =
 839       theFeature->data()->attributes(ModelAPI_AttributeDouble::typeId());
 840     std::list<AttributePtr>::iterator aDoubleIter = aDoubles.begin();
 841     for(; aDoubleIter != aDoubles.end(); aDoubleIter++) {
 842       AttributeDoublePtr aDouble =
 843         std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(*aDoubleIter);
 844       if (aDouble.get() && !aDouble->text().empty()) {
 845         if (myIsParamUpdated) {
 846           ModelAPI_AttributeEvalMessage::send(aDouble, this);
 847         }
 848         if (aDouble->expressionInvalid()) {
 849           aState = ModelAPI_StateInvalidArgument;
 850         }
 851       }
 852     }
 853   }
 854   // Point
 855   {
 856     std::list<AttributePtr> anAttributes =
 857       theFeature->data()->attributes(GeomDataAPI_Point::typeId());
 858     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 859     for(; anIter != anAttributes.end(); anIter++) {
 860       AttributePointPtr aPointAttribute =
 861         std::dynamic_pointer_cast<GeomDataAPI_Point>(*anIter);
 862       if (aPointAttribute.get() && (!aPointAttribute->textX().empty() ||
 863           !aPointAttribute->textY().empty() || !aPointAttribute->textZ().empty())) {
 864         if (myIsParamUpdated) {
 865           ModelAPI_AttributeEvalMessage::send(aPointAttribute, this);
 866         }
 867         if ((!aPointAttribute->textX().empty() && aPointAttribute->expressionInvalid(0)) ||
 868           (!aPointAttribute->textY().empty() && aPointAttribute->expressionInvalid(1)) ||
 869           (!aPointAttribute->textZ().empty() && aPointAttribute->expressionInvalid(2)))
 870           aState = ModelAPI_StateInvalidArgument;
 871       }
 872     }
 873   }
 874   // Point2D
 875   {
 876     std::list<AttributePtr> anAttributes =
 877       theFeature->data()->attributes(GeomDataAPI_Point2D::typeId());
 878     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 879     for(; anIter != anAttributes.end(); anIter++) {
 880       AttributePoint2DPtr aPoint2DAttribute =
 881         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(*anIter);
 882       if (aPoint2DAttribute.get()) {
 883         if (myIsParamUpdated && (!aPoint2DAttribute->textX().empty() ||
 884             !aPoint2DAttribute->textY().empty())) {
 885           ModelAPI_AttributeEvalMessage::send(aPoint2DAttribute, this);
 886         }
 887         if ((!aPoint2DAttribute->textX().empty() && aPoint2DAttribute->expressionInvalid(0)) ||
 888           (!aPoint2DAttribute->textY().empty() && aPoint2DAttribute->expressionInvalid(1)))
 889           aState = ModelAPI_StateInvalidArgument;
 890       }
 891     }
 892   }
 893   // update the selection attributes if any
 894   std::list<AttributePtr> aRefs =
 895     theFeature->data()->attributes(ModelAPI_AttributeSelection::typeId());
 896   std::list<AttributePtr>::iterator aRefsIter = aRefs.begin();
 897   for (; aRefsIter != aRefs.end(); aRefsIter++) {
 898     std::shared_ptr<ModelAPI_AttributeSelection> aSel =
 899       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(*aRefsIter);
 900     ObjectPtr aContext = aSel->context();
 901     // update argument only if the referenced object is ready to use
 902     if (aContext.get() && !aContext->isDisabled()) {
 903       if (isReason(theFeature, aContext)) {
 904         if (!aSel->update()) { // this must be done on execution since it may be long operation
 905           bool isObligatory = !aFactory->isNotObligatory(
 906             theFeature->getKind(), theFeature->data()->id(aSel)) &&
 907             aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 908           if (isObligatory)
 909             aState = ModelAPI_StateInvalidArgument;
 910         }
 911       }
 912     } else if (aContext.get()) {
 913       // here it may be not obligatory, but if the reference is wrong, it should not be correct
 914       bool isObligatory = aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 915       if (isObligatory)
 916         aState = ModelAPI_StateInvalidArgument;
 917     } else if (theFeature->getKind() == "Sketch" && aSel->id() == "External" &&
 918                aSel->isInitialized()) {
 919       // #19703 : if sketch plane was selected, but after context disappears, it must become invalid
 920       aSel->update();
 921       if (aSel->isInvalid()) {
 922           aState = ModelAPI_StateInvalidArgument;
 923       }
 924     }
 925   }
 926   // update the selection list attributes if any
 927   aRefs = theFeature->data()->attributes(ModelAPI_AttributeSelectionList::typeId());
 928   for (aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
 929     std::shared_ptr<ModelAPI_AttributeSelectionList> aSel =
 930       std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(*aRefsIter);
 931     // #19071 : avoid sending of update event in cycle
 932     bool aWasBlocked = theFeature->data()->blockSendAttributeUpdated(true);
 933     // list to keep the shared pointers while update is blocked (in messages raw poiters are used)
 934     std::list<AttributeSelectionPtr> anAttrList;
 935     for(int a = aSel->size() - 1; a >= 0; a--) {
 936       std::shared_ptr<ModelAPI_AttributeSelection> aSelAttr =
 937         std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(aSel->value(a));
 938       if (aSelAttr) {
 939         ObjectPtr aContext = aSelAttr->context();
 940         // update argument only if the referenced object is ready to use
 941         if (aContext.get() && !aContext->isDisabled()) {
 942           if (isReason(theFeature, aContext)) {
 943             anAttrList.push_back(aSelAttr);
 944             if (!aSelAttr->update()) {
 945               bool isObligatory = !aFactory->isNotObligatory(
 946                 theFeature->getKind(), theFeature->data()->id(aSel)) &&
 947                 aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 948               if (isObligatory)
 949                 aState = ModelAPI_StateInvalidArgument;
 950             }
 951           }
 952         } else if (aContext.get()) {
 953           // here it may be not obligatory, but if the reference is wrong, it should not be correct
 954           bool isObligatory = aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 955           if (isObligatory)
 956             aState = ModelAPI_StateInvalidArgument;
 957         }
 958       }
 959     }
 960     if (!aWasBlocked)
 961       theFeature->data()->blockSendAttributeUpdated(false);
 962   }
 963
 964   if (aState != ModelAPI_StateDone)
 965     theFeature->data()->execState(aState);
 966 }
 967
 968 bool Model_Update::isReason(std::shared_ptr<ModelAPI_Feature>& theFeature,
 969      std::shared_ptr<ModelAPI_Object> theReason)
 970 {
 971   std::map<std::shared_ptr<ModelAPI_Feature>, std::set<std::shared_ptr<ModelAPI_Feature> > >
 972     ::iterator aReasonsIt = myModified.find(theFeature);
 973   if (aReasonsIt != myModified.end()) {
 974     if (aReasonsIt->second.find(theFeature) != aReasonsIt->second.end())
 975       return true; // any is reason if it contains itself
 976     FeaturePtr aReasFeat = std::dynamic_pointer_cast<ModelAPI_Feature>(theReason);
 977     if (!aReasFeat.get()) { // try to get feature of this result
 978       ResultPtr aReasRes = std::dynamic_pointer_cast<ModelAPI_Result>(theReason);
 979       if (aReasRes.get())
 980         aReasFeat = theReason->document()->feature(aReasRes);
 981     }
 982     if (aReasonsIt->second.find(aReasFeat) != aReasonsIt->second.end())
 983       return true;
 984   }
 985   // another try: postponed modification by not-persistences
 986   std::map<std::shared_ptr<ModelAPI_Feature>, std::set<std::shared_ptr<ModelAPI_Feature> > >
 987     ::iterator aNotPersist = myNotPersistentRefs.find(theFeature);
 988   if (aNotPersist != myNotPersistentRefs.end()) {
 989     FeaturePtr aReasFeat = std::dynamic_pointer_cast<ModelAPI_Feature>(theReason);
 990     if (!aReasFeat.get()) { // try to get feature of this result
 991       ResultPtr aReasRes = std::dynamic_pointer_cast<ModelAPI_Result>(theReason);
 992       if (aReasRes.get())
 993         aReasFeat = theReason->document()->feature(aReasRes);
 994     }
 995     if (aNotPersist->second.find(aReasFeat) != aNotPersist->second.end())
 996       return true;
 997   }
 998
 999   // this case only for not-previewed items update state, nothing is changed in args for it
1000   return false;
1001 }
1002
1003 void Model_Update::executeFeature(FeaturePtr theFeature)
1004 {
1005 #ifdef DEB_UPDATE
1006   std::wcout<<L"Execute Feature "<<theFeature->name()<<std::endl;
1007 #endif
1008   // execute in try-catch to avoid internal problems of the feature
1009   ModelAPI_ExecState aState = ModelAPI_StateDone;
1010   theFeature->data()->execState(ModelAPI_StateDone);
1011   try {
1012     theFeature->execute();
1013     if (theFeature->data()->execState() != ModelAPI_StateDone) {
1014       aState = ModelAPI_StateExecFailed;
1015     } else {
1016       aState = ModelAPI_StateDone;
1017     }
1018   } catch(...) {
1019     aState = ModelAPI_StateExecFailed;
1020     Events_InfoMessage("Model_Update",
1021       "Feature %1 has failed during the execution").arg(theFeature->getKind()).send();
1022   }
1023   // The macro feature has to be deleted in any case even its execution is failed
1024   myWaitForFinish.insert(theFeature);
1025   if (aState != ModelAPI_StateDone) {
1026     theFeature->eraseResults(false);
1027   }
1028   theFeature->data()->setUpdateID(ModelAPI_Session::get()->transactionID());
1029   redisplayWithResults(theFeature, aState);
1030 }
1031
1032 // it is called on GUI edit of feature start
1033 // LCOV_EXCL_START
1034 void Model_Update::updateStability(void* theSender)
1035 {
1036   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
1037   if (theSender) {
1038     bool added = false; // object may be was crated
1039     ModelAPI_Object* aSender = static_cast<ModelAPI_Object*>(theSender);
1040     if (aSender && aSender->document()) {
1041       FeaturePtr aFeatureSender =
1042         std::dynamic_pointer_cast<ModelAPI_Feature>(aSender->data()->owner());
1043       if (aFeatureSender.get()) {
1044         Model_Objects* aDocObjects =
1045           std::dynamic_pointer_cast<Model_Document>(aSender->document())->objects();
1046         if (aDocObjects) {
1047           //aDocObjects->synchronizeBackRefs();
1048           // remove or add all concealment refs from this feature
1049           std::list<std::pair<std::string, std::list<ObjectPtr> > > aRefs;
1050           aSender->data()->referencesToObjects(aRefs);
1051           std::list<std::pair<std::string, std::list<ObjectPtr> > >::iterator
1052             aRefIt = aRefs.begin();
1053           for(; aRefIt != aRefs.end(); aRefIt++) {
1054             if (!aFactory->isConcealed(aFeatureSender->getKind(), aRefIt->first))
1055               // take into account only concealed references
1056               // (do not remove the sketch constraint and the edge on constraint edit)
1057               continue;
1058             std::list<ObjectPtr>& aRefFeaturesList = aRefIt->second;
1059             std::list<ObjectPtr>::iterator aReferenced = aRefFeaturesList.begin();
1060             for(; aReferenced != aRefFeaturesList.end(); aReferenced++) {
1061                // stability is only on results: feature to feature reference mean nested
1062               // features, that will remove nesting references
1063               if (aReferenced->get() && (*aReferenced)->data()->isValid() &&
1064                 (*aReferenced)->groupName() != ModelAPI_Feature::group()) {
1065                 std::shared_ptr<Model_Data> aData =
1066                   std::dynamic_pointer_cast<Model_Data>((*aReferenced)->data());
1067                 if (aFeatureSender->isStable()) {
1068                   aData->addBackReference(aFeatureSender, aRefIt->first);
1069                 } else {
1070                   aData->removeBackReference(aFeatureSender, aRefIt->first);
1071                   added = true; // remove of concealment may be caused creation of some result
1072                 }
1073               }
1074             }
1075           }
1076         }
1077       }
1078     }
1079     if (added) {
1080       static Events_Loop* aLoop = Events_Loop::loop();
1081       static Events_ID kEventCreated = aLoop->eventByName(EVENT_OBJECT_CREATED);
1082       aLoop->flush(kEventCreated);
1083     }
1084   }
1085 }
1086 // LCOV_EXCL_STOP
1087
1088 void Model_Update::updateSelection(const std::set<std::shared_ptr<ModelAPI_Object> >& theObjects)
1089 {
1090   std::set<std::shared_ptr<ModelAPI_Object> >::iterator anObj = theObjects.begin();
1091   for(; anObj != theObjects.end(); anObj++) {
1092     std::list<AttributePtr> aRefs =
1093       (*anObj)->data()->attributes(ModelAPI_AttributeSelection::typeId());
1094     std::list<AttributePtr>::iterator aRefsIter = aRefs.begin();
1095     for (; aRefsIter != aRefs.end(); aRefsIter++) {
1096       AttributeSelectionPtr aSel =
1097         std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(*aRefsIter);
1098       bool aRemove = false;
1099       aSel->updateInHistory(aRemove);
1100     }
1101     // update the selection list attributes if any
1102     aRefs = (*anObj)->data()->attributes(ModelAPI_AttributeSelectionList::typeId());
1103     for (aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
1104       std::set<int> aRemoveSet;
1105       std::shared_ptr<ModelAPI_AttributeSelectionList> aSel =
1106         std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(*aRefsIter);
1107       for(int a = aSel->size() - 1; a >= 0; a--) {
1108         AttributeSelectionPtr aSelAttr =
1109           std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(aSel->value(a));
1110         if (aSelAttr.get()) {
1111           bool aRemove = false;
1112           aSelAttr->updateInHistory(aRemove);
1113           if (aRemove) {
1114             aRemoveSet.insert(a);
1115           }
1116         }
1117       }
1118       aSel->remove(aRemoveSet);
1119     }
1120   }
1121 }