src/Model/Model_Update.cpp

   1 // Copyright (C) 2014-2017  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
  18 // email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
  19 //
  20
  21 #include <Model_Update.h>
  22 #include <Model_Document.h>
  23 #include <Model_Data.h>
  24 #include <Model_Objects.h>
  25 #include <Model_AttributeSelection.h>
  26 #include <ModelAPI_Feature.h>
  27 #include <ModelAPI_Data.h>
  28 #include <ModelAPI_Document.h>
  29 #include <ModelAPI_Events.h>
  30 #include <ModelAPI_AttributeReference.h>
  31 #include <ModelAPI_AttributeRefList.h>
  32 #include <ModelAPI_AttributeRefAttr.h>
  33 #include <ModelAPI_AttributeSelection.h>
  34 #include <ModelAPI_AttributeSelectionList.h>
  35 #include <ModelAPI_Result.h>
  36 #include <ModelAPI_ResultPart.h>
  37 #include <ModelAPI_Validator.h>
  38 #include <ModelAPI_CompositeFeature.h>
  39 #include <ModelAPI_Session.h>
  40 #include <ModelAPI_Tools.h>
  41 #include <ModelAPI_ResultBody.h>
  42 #include <ModelAPI_ResultPart.h>
  43 #include <ModelAPI_ResultConstruction.h>
  44 #include <GeomAPI_Shape.h>
  45 #include <GeomDataAPI_Point.h>
  46 #include <GeomDataAPI_Point2D.h>
  47 #include <Events_Loop.h>
  48 #include <Events_LongOp.h>
  49 #include <Events_InfoMessage.h>
  50 #include <Config_PropManager.h>
  51
  52 Model_Update MY_UPDATER_INSTANCE;  /// the only one instance initialized on load of the library
  53 //#define DEB_UPDATE
  54
  55 Model_Update::Model_Update()
  56 {
  57   Events_Loop* aLoop = Events_Loop::loop();
  58   static const Events_ID kChangedEvent = aLoop->eventByName("PreferenceChanged");
  59   aLoop->registerListener(this, kChangedEvent);
  60   static const Events_ID kCreatedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_CREATED);
  61   aLoop->registerListener(this, kCreatedEvent);
  62   static const Events_ID kUpdatedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_UPDATED);
  63   aLoop->registerListener(this, kUpdatedEvent);
  64   static const Events_ID kOpFinishEvent = aLoop->eventByName("FinishOperation");
  65   aLoop->registerListener(this, kOpFinishEvent);
  66   static const Events_ID kOpAbortEvent = aLoop->eventByName("AbortOperation");
  67   aLoop->registerListener(this, kOpAbortEvent);
  68   static const Events_ID kOpStartEvent = aLoop->eventByName("StartOperation");
  69   aLoop->registerListener(this, kOpStartEvent);
  70   static const Events_ID kStabilityEvent = aLoop->eventByName(EVENT_STABILITY_CHANGED);
  71   aLoop->registerListener(this, kStabilityEvent);
  72   static const Events_ID kPreviewBlockedEvent = aLoop->eventByName(EVENT_PREVIEW_BLOCKED);
  73   aLoop->registerListener(this, kPreviewBlockedEvent);
  74   static const Events_ID kPreviewRequestedEvent = aLoop->eventByName(EVENT_PREVIEW_REQUESTED);
  75   aLoop->registerListener(this, kPreviewRequestedEvent);
  76   static const Events_ID kReorderEvent = aLoop->eventByName(EVENT_ORDER_UPDATED);
  77   aLoop->registerListener(this, kReorderEvent);
  78   static const Events_ID kUpdatedSel = aLoop->eventByName(EVENT_UPDATE_SELECTION);
  79   aLoop->registerListener(this, kUpdatedSel);
  80   static const Events_ID kAutoRecomp = aLoop->eventByName(EVENT_AUTOMATIC_RECOMPUTATION_ENABLE);
  81   aLoop->registerListener(this, kAutoRecomp);
  82
  83   //  Config_PropManager::findProp("Model update", "automatic_rebuild")->value() == "true";
  84   myIsParamUpdated = false;
  85   myIsFinish = false;
  86   myIsProcessed = false;
  87   myIsPreviewBlocked = false;
  88   myUpdateBlocked = false;
  89 }
  90
  91 bool Model_Update::addModified(FeaturePtr theFeature, FeaturePtr theReason) {
  92
  93   if (!theFeature->data()->isValid())
  94     return false; // delete an extrusion created on the sketch
  95
  96
  97   bool isNotExecuted = theFeature->isPersistentResult() &&
  98     !std::dynamic_pointer_cast<Model_Document>((theFeature)->document())->executeFeatures();
  99   if (isNotExecuted) {
 100     redisplayWithResults(theFeature, ModelAPI_StateNothing, false); // redisplay even not executed
 101     if (!theReason.get()) // no reason => no construction reason
 102       return false;
 103     if (myNotPersistentRefs.find(theFeature) == myNotPersistentRefs.end()) {
 104       myNotPersistentRefs[theFeature].insert(theReason);
 105     } else {
 106       std::set<std::shared_ptr<ModelAPI_Feature> > aNewSet;
 107       aNewSet.insert(theReason);
 108       myNotPersistentRefs[theFeature] = aNewSet;
 109     }
 110     return false;
 111   }
 112
 113   // update arguments for "apply button" state change
 114   if ((!theFeature->isPreviewNeeded() && !myIsFinish) || myIsPreviewBlocked) {
 115     if (theReason.get())
 116       myProcessOnFinish[theFeature].insert(theReason);
 117     else if (myProcessOnFinish.find(theFeature) == myProcessOnFinish.end())
 118       myProcessOnFinish[theFeature] = std::set<std::shared_ptr<ModelAPI_Feature> >();
 119 #ifdef DEB_UPDATE
 120       std::cout<<"*** Add process on finish "<<theFeature->name()<<std::endl;
 121 #endif
 122     // keeps the currently updated features to avoid infinitive cycling here: where feature on
 123     // "updateArguments" sends "updated" (in selection attribute) and goes here again
 124     static std::set<FeaturePtr> aCurrentlyUpdated;
 125     if (aCurrentlyUpdated.find(theFeature) == aCurrentlyUpdated.end()) {
 126       aCurrentlyUpdated.insert(theFeature);
 127       updateArguments(theFeature);
 128       aCurrentlyUpdated.erase(theFeature);
 129     }
 130     // make it without conditions otherwise the apply button may have a bad state
 131     theFeature->data()->execState(ModelAPI_StateDone);
 132     static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 133      // need to be validated to update the "Apply" state if not previewed
 134     aFactory->validate(theFeature);
 135
 136     // to redisplay split's arguments presentation, even result is not computed
 137     if (!theFeature->isPreviewNeeded()) {
 138       static Events_Loop* aLoop = Events_Loop::loop();
 139       static const Events_ID kRedisplayEvent = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 140       ModelAPI_EventCreator::get()->sendUpdated(theFeature, kRedisplayEvent);
 141       aLoop->flush(kRedisplayEvent);
 142     }
 143
 144     if (!myIsPreviewBlocked)
 145       return true;
 146   }
 147   if (myModified.find(theFeature) != myModified.end()) {
 148     if (theReason.get()) {
 149 #ifdef DEB_UPDATE
 150       //std::cout<<"*** Add already modified "
 151       //   <<theFeature->name()<<" reason "<<theReason->name()<<std::endl;
 152 #endif
 153       myModified[theFeature].insert(theReason);
 154     }
 155     return true;
 156   }
 157   // do not add the disabled, but possibly the sub-elements are not disabled
 158   bool aIsDisabled = theFeature->isDisabled();
 159   if (!aIsDisabled) {
 160     std::set<std::shared_ptr<ModelAPI_Feature> > aNewSet;
 161     if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated ||
 162         theFeature->data()->execState() == ModelAPI_StateInvalidArgument || // issue 1519
 163         theFeature->data()->execState() == ModelAPI_StateExecFailed) {
 164       // do not forget that in this case all were the reasons
 165       aNewSet.insert(theFeature);
 166     } else {
 167       if (theReason.get())
 168         aNewSet.insert(theReason);
 169     }
 170     myModified[theFeature] = aNewSet;
 171 #ifdef DEB_UPDATE
 172     if (theReason.get()) {
 173       //std::cout<<"*** Add modified "<<theFeature->name()
 174       //  <<" reason "<<theReason->name()<<std::endl;
 175     } else {
 176       //std::cout<<"*** Add modified "<<theFeature->name()<<std::endl;
 177     }
 178 #endif
 179   } else { // will be updated during the finish of the operation, or when it becomes enabled
 180     if (theFeature->data()->execState() == ModelAPI_StateDone ||
 181         theFeature->data()->execState() == ModelAPI_StateExecFailed) // fix issue 1819
 182       theFeature->data()->execState(ModelAPI_StateMustBeUpdated);
 183     else
 184       return true; // do not need iteration deeply if it is already marked as modified or so
 185 #ifdef DEB_UPDATE
 186     //std::cout<<"*** Set modified state "<<theFeature->name()<<std::endl;
 187 #endif
 188   }
 189   // clear processed and fill modified recursively
 190   const std::set<std::shared_ptr<ModelAPI_Attribute> >& aRefs = theFeature->data()->refsToMe();
 191   std::set<std::shared_ptr<ModelAPI_Attribute> >::const_iterator aRefIter = aRefs.cbegin();
 192   for(; aRefIter != aRefs.cend(); aRefIter++) {
 193     if ((*aRefIter)->isArgument()) {
 194       FeaturePtr aReferenced = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRefIter)->owner());
 195       if (aReferenced.get()) {
 196         addModified(aReferenced, theFeature);
 197       }
 198     }
 199   }
 200   // process also results
 201   std::list<ResultPtr> allResults; // list of this feature and results
 202   ModelAPI_Tools::allResults(theFeature, allResults);
 203   std::list<ResultPtr>::iterator aRes = allResults.begin();
 204   for(; aRes != allResults.end(); aRes++) {
 205     const std::set<std::shared_ptr<ModelAPI_Attribute> >& aRefs = (*aRes)->data()->refsToMe();
 206     std::set<std::shared_ptr<ModelAPI_Attribute> >::const_iterator aRefIter = aRefs.cbegin();
 207     for(; aRefIter != aRefs.cend(); aRefIter++) {
 208       if ((*aRefIter)->isArgument()) {
 209         FeaturePtr aReferenced = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRefIter)->owner());
 210         if (aReferenced.get()) {
 211           addModified(aReferenced, theFeature);
 212         }
 213       }
 214     }
 215   }
 216
 217   // also add part feature that contains this feature to the modified
 218   if (theFeature->document()->kind() != "PartSet") {
 219     FeaturePtr aPart = ModelAPI_Tools::findPartFeature(
 220       ModelAPI_Session::get()->moduleDocument(), theFeature->document());
 221     if (aPart.get())
 222       addModified(aPart, theFeature);
 223   }
 224   return true;
 225 }
 226
 227 void Model_Update::processEvent(const std::shared_ptr<Events_Message>& theMessage)
 228 {
 229   static Events_Loop* aLoop = Events_Loop::loop();
 230   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 231   static const Events_ID kCreatedEvent = aLoop->eventByName(EVENT_OBJECT_CREATED);
 232   static const Events_ID kUpdatedEvent = aLoop->eventByName(EVENT_OBJECT_UPDATED);
 233   static const Events_ID kOpFinishEvent = aLoop->eventByName("FinishOperation");
 234   static const Events_ID kOpAbortEvent = aLoop->eventByName("AbortOperation");
 235   static const Events_ID kOpStartEvent = aLoop->eventByName("StartOperation");
 236   static const Events_ID kStabilityEvent = aLoop->eventByName(EVENT_STABILITY_CHANGED);
 237   static const Events_ID kPreviewBlockedEvent = aLoop->eventByName(EVENT_PREVIEW_BLOCKED);
 238   static const Events_ID kPreviewRequestedEvent = aLoop->eventByName(EVENT_PREVIEW_REQUESTED);
 239   static const Events_ID kReorderEvent = aLoop->eventByName(EVENT_ORDER_UPDATED);
 240   static const Events_ID kRedisplayEvent = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 241   static const Events_ID kUpdatedSel = aLoop->eventByName(EVENT_UPDATE_SELECTION);
 242
 243 #ifdef DEB_UPDATE
 244   std::cout<<"****** Event "<<theMessage->eventID().eventText()<<std::endl;
 245 #endif
 246   // check the automatic update flag on any event
 247   bool aNewAutomaticState = ModelAPI_Session::get()->isAutoUpdateBlocked();
 248   if (myUpdateBlocked != aNewAutomaticState) {
 249     myUpdateBlocked = aNewAutomaticState;
 250     if (!myUpdateBlocked) { // process all modified features, even if preview is blocked
 251       bool aPreviewBlockedState = myIsPreviewBlocked; // to update the selected arguments
 252       myIsPreviewBlocked = false;
 253       // iterate everything and add features in state "MustBeUpdated" into modified
 254       std::list<std::shared_ptr<ModelAPI_Document> > allDocs =
 255         ModelAPI_Session::get()->allOpenedDocuments();
 256       std::list<std::shared_ptr<ModelAPI_Document> >::iterator aDoc = allDocs.begin();
 257       for(; aDoc != allDocs.end(); aDoc++) {
 258         std::list<std::shared_ptr<ModelAPI_Feature> > allFeats = (*aDoc)->allFeatures();
 259         std::list<std::shared_ptr<ModelAPI_Feature> >::iterator aFeat = allFeats.begin();
 260         for(; aFeat != allFeats.end(); aFeat++) {
 261           if ((*aFeat)->data()->isValid() &&
 262             (*aFeat)->data()->execState() == ModelAPI_StateMustBeUpdated) {
 263             addModified(*aFeat, FeaturePtr());
 264           }
 265         }
 266       }
 267       processFeatures();
 268       myIsPreviewBlocked = myIsPreviewBlocked;
 269     }
 270   }
 271
 272   if (theMessage->eventID() == kStabilityEvent) {
 273     updateStability(theMessage->sender());
 274     return;
 275   }
 276   if (theMessage->eventID() == kPreviewBlockedEvent) {
 277     myIsPreviewBlocked = true;
 278     return;
 279   }
 280   if (theMessage->eventID() == kPreviewRequestedEvent) {
 281     if (myIsPreviewBlocked) {
 282       bool anUpdateState = myUpdateBlocked;
 283       myUpdateBlocked = false;
 284       myIsPreviewBlocked = false;
 285       processFeatures();
 286       myIsPreviewBlocked = true;
 287       myUpdateBlocked = anUpdateState;
 288     }
 289     return;
 290   }
 291   if (theMessage->eventID() == kUpdatedSel) {
 292     std::shared_ptr<ModelAPI_ObjectUpdatedMessage> aMsg =
 293         std::dynamic_pointer_cast<ModelAPI_ObjectUpdatedMessage>(theMessage);
 294     updateSelection(aMsg->objects());
 295   }
 296   // creation is added to "update" to avoid recomputation twice:
 297   // on create and immediately after on update
 298   if (theMessage->eventID() == kCreatedEvent) {
 299     std::shared_ptr<ModelAPI_ObjectUpdatedMessage> aMsg =
 300         std::dynamic_pointer_cast<ModelAPI_ObjectUpdatedMessage>(theMessage);
 301     const std::set<ObjectPtr>& anObjs = aMsg->objects();
 302     std::set<ObjectPtr>::const_iterator anObjIter = anObjs.cbegin();
 303     for(; anObjIter != anObjs.cend(); anObjIter++) {
 304       if (std::dynamic_pointer_cast<Model_Document>((*anObjIter)->document())->executeFeatures()) {
 305         if ((*anObjIter)->groupName() == ModelAPI_Feature::group()) {
 306           // results creation means enabling, not update
 307           ModelAPI_EventCreator::get()->sendUpdated(*anObjIter, kUpdatedEvent);
 308         } else {
 309           ModelAPI_EventCreator::get()->sendUpdated(*anObjIter, kRedisplayEvent);
 310         }
 311       }
 312     }
 313     return;
 314   }
 315   if (theMessage->eventID() == kUpdatedEvent) {
 316     std::shared_ptr<ModelAPI_ObjectUpdatedMessage> aMsg =
 317         std::dynamic_pointer_cast<ModelAPI_ObjectUpdatedMessage>(theMessage);
 318     const std::set<ObjectPtr>& anObjs = aMsg->objects();
 319     std::set<ObjectPtr>::const_iterator anObjIter = anObjs.cbegin();
 320     bool aSomeModified = false; // check that features not changed: only redisplay is needed
 321     for(; anObjIter != anObjs.cend(); anObjIter++) {
 322       if (!(*anObjIter)->data()->isValid())
 323         continue;
 324 #ifdef DEB_UPDATE
 325       std::cout<<">>> in event updated "<<(*anObjIter)->groupName()<<
 326         " "<<(*anObjIter)->data()->name()<<std::endl;
 327 #endif
 328       if ((*anObjIter)->groupName() == ModelAPI_ResultParameter::group()) {
 329         myIsParamUpdated = true;
 330       }
 331       // on undo/redo, abort do not update persistent features
 332       FeaturePtr anUpdated = std::dynamic_pointer_cast<ModelAPI_Feature>(*anObjIter);
 333       if (anUpdated.get()) {
 334         if (addModified(anUpdated, FeaturePtr()))
 335           aSomeModified = true;
 336         if (myUpdateBlocked) { // execute this feature anyway to show the current result
 337           /*if (!anUpdated->isStable() && anUpdated->results().size() && (
 338               anUpdated->firstResult()->groupName() == ModelAPI_ResultBody::group() ||
 339               anUpdated->firstResult()->groupName() == ModelAPI_ResultPart::group())) {
 340             if (aFactory->validate(anUpdated)) {
 341               executeFeature(anUpdated);
 342               redisplayWithResults(anUpdated, ModelAPI_StateNothing, false);
 343               static Events_ID EVENT_DISP = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 344               aLoop->flush(EVENT_DISP);
 345             }
 346           }*/
 347         }
 348       } else {
 349         // process the updated result as update of features that refers to this result
 350         const std::set<std::shared_ptr<ModelAPI_Attribute> >&
 351           aRefs = (*anObjIter)->data()->refsToMe();
 352         std::set<std::shared_ptr<ModelAPI_Attribute> >::const_iterator aRefIter = aRefs.cbegin();
 353         FeaturePtr aReason;
 354         ResultPtr aReasonResult = std::dynamic_pointer_cast<ModelAPI_Result>(*anObjIter);
 355         if (aReasonResult.get())
 356           aReason = (*anObjIter)->document()->feature(aReasonResult);
 357         for(; aRefIter != aRefs.cend(); aRefIter++) {
 358           if (!(*aRefIter)->owner()->data()->isValid())
 359             continue;
 360           FeaturePtr anUpdated = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRefIter)->owner());
 361           if (anUpdated.get()) {
 362             if (addModified(anUpdated, aReason))
 363               aSomeModified = true;
 364           }
 365         }
 366       }
 367     }
 368     // this event is for solver update, not here, do not react immediately
 369     if (aSomeModified) {
 370         processFeatures();
 371     }
 372   } else if (theMessage->eventID() == kOpFinishEvent || theMessage->eventID() == kOpAbortEvent ||
 373       theMessage->eventID() == kOpStartEvent) {
 374     myIsPreviewBlocked = false;
 375
 376     if (theMessage->eventID() == kOpFinishEvent) {// if update is blocked, skip
 377       myIsFinish = true;
 378       // add features that wait for finish as modified
 379       std::map<std::shared_ptr<ModelAPI_Feature>, std::set<std::shared_ptr<ModelAPI_Feature> > >::
 380         iterator aFeature = myProcessOnFinish.begin();
 381       for(; aFeature != myProcessOnFinish.end(); aFeature++) {
 382         if (aFeature->first->data()->isValid()) {// there may be already removed while wait
 383           if (aFeature->second.empty()) {
 384             addModified(aFeature->first, FeaturePtr());
 385             continue;
 386           }
 387           std::set<std::shared_ptr<ModelAPI_Feature> >::iterator aReasons;
 388           for(aReasons = aFeature->second.begin(); aReasons != aFeature->second.end(); aReasons++){
 389             addModified(aFeature->first, *aReasons);
 390           }
 391         }
 392       }
 393       myIsFinish = false;
 394     }
 395     // processed features must be only on finish, so clear anyway (to avoid re-import on load)
 396     myProcessOnFinish.clear();
 397
 398     // #2156: current must be sketch, left after the macro execution
 399     DocumentPtr anActiveDoc = ModelAPI_Session::get()->activeDocument();
 400     FeaturePtr aCurrent;
 401     if (anActiveDoc.get())
 402       aCurrent = anActiveDoc->currentFeature(false);
 403
 404     if (!(theMessage->eventID() == kOpStartEvent)) {
 405       processFeatures(false);
 406     }
 407
 408     if (anActiveDoc.get() && aCurrent.get() && aCurrent->data()->isValid()) {
 409       if (anActiveDoc->currentFeature(false) != aCurrent &&
 410           ModelAPI_Tools::compositeOwner(anActiveDoc->currentFeature(false)) == aCurrent)
 411         anActiveDoc->setCurrentFeature(aCurrent, false); // #2156 make the current feature back
 412     }
 413
 414     // remove all macros before clearing all created
 415     std::set<FeaturePtr>::iterator anUpdatedIter = myWaitForFinish.begin();
 416     while(anUpdatedIter != myWaitForFinish.end()) {
 417       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(*anUpdatedIter);
 418       if (aFeature.get()) {
 419         // remove macro on finish
 420         if (aFeature->isMacro()) {
 421           aFeature->document()->removeFeature(aFeature);
 422           myWaitForFinish.erase(aFeature);
 423         }
 424         // to avoid the map update problems on "remove"
 425         if (myWaitForFinish.find(aFeature) == myWaitForFinish.end()) {
 426           anUpdatedIter = myWaitForFinish.begin();
 427         } else {
 428           anUpdatedIter++;
 429         }
 430       } else {
 431         anUpdatedIter++;
 432       }
 433     }
 434     // the redisplay signal should be flushed in order
 435     // to erase the feature presentation in the viewer
 436     // if should be done after removeFeature() of document,
 437     // by this reason, upper processFeatures() do not perform this flush
 438     Events_Loop::loop()->flush(kRedisplayEvent);
 439
 440     // in the end of transaction everything is updated, so clear the old objects
 441     myIsParamUpdated = false;
 442     myWaitForFinish.clear();
 443   } else if (theMessage->eventID() == kReorderEvent) {
 444     std::shared_ptr<ModelAPI_OrderUpdatedMessage> aMsg =
 445       std::dynamic_pointer_cast<ModelAPI_OrderUpdatedMessage>(theMessage);
 446     if (aMsg->reordered().get())
 447       addModified(aMsg->reordered(), aMsg->reordered()); // to update all attributes
 448   }
 449 }
 450
 451 void Model_Update::processFeatures(const bool theFlushRedisplay)
 452 {
 453    // perform update of everything if it is not performed right now or any preview is blocked
 454   if (!myIsProcessed && !myIsPreviewBlocked) {
 455     myIsProcessed = true;
 456     #ifdef DEB_UPDATE
 457       std::cout<<"****** Start processing"<<std::endl;
 458     #endif
 459
 460     while(!myModified.empty()) {
 461       processFeature(myModified.begin()->first);
 462     }
 463     myIsProcessed = false;
 464
 465     // to update the object browser if something is updated/created during executions
 466     static Events_Loop* aLoop = Events_Loop::loop();
 467     static const Events_ID kCreatedEvent= aLoop->eventByName(EVENT_OBJECT_CREATED);
 468     aLoop->flush(kCreatedEvent);
 469     static const Events_ID kUpdatedEvent = aLoop->eventByName(EVENT_OBJECT_UPDATED);
 470     aLoop->flush(kUpdatedEvent);
 471
 472     // flush to update display
 473     if (theFlushRedisplay) {
 474       static Events_ID EVENT_DISP = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 475       aLoop->flush(EVENT_DISP);
 476     }
 477     #ifdef DEB_UPDATE
 478       std::cout<<"****** End processing"<<std::endl;
 479     #endif
 480     myProcessed.clear();
 481   }
 482 }
 483
 484 // collects all the features this feature depends on: reasons
 485 static void allReasons(FeaturePtr theFeature, std::set<FeaturePtr>& theReasons) {
 486   std::list<std::pair<std::string, std::list<std::shared_ptr<ModelAPI_Object> > > > aDeps;
 487   theFeature->data()->referencesToObjects(aDeps);
 488   std::list<std::pair<std::string, std::list<std::shared_ptr<ModelAPI_Object> > > >::iterator
 489     anAttrsIter = aDeps.begin();
 490   for(; anAttrsIter != aDeps.end(); anAttrsIter++) {
 491     if (theFeature->attribute(anAttrsIter->first)->isArgument()) {
 492       std::list<std::shared_ptr<ModelAPI_Object> >::iterator aDepIter = anAttrsIter->second.begin();
 493       for(; aDepIter != anAttrsIter->second.end(); aDepIter++) {
 494         FeaturePtr aDepFeat = std::dynamic_pointer_cast<ModelAPI_Feature>(*aDepIter);
 495         if (!aDepFeat.get()) { // so, it depends on the result and process the feature owner of it
 496           ResultPtr aDepRes = std::dynamic_pointer_cast<ModelAPI_Result>(*aDepIter);
 497           if (aDepRes.get()) {
 498             aDepFeat = (*aDepIter)->document()->feature(aDepRes);
 499           }
 500         }
 501         if (aDepFeat.get() && aDepFeat->data()->isValid()) {
 502           theReasons.insert(aDepFeat);
 503         }
 504       }
 505     }
 506   }
 507   if (theFeature->getKind() == "Part") {
 508     // part is not depended on its subs directly, but subs must be iterated anyway
 509     CompositeFeaturePtr aPart = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 510     int aNum = aPart->numberOfSubs();
 511     for(int a = 0; a < aNum; a++) {
 512       FeaturePtr aSub = aPart->subFeature(a);
 513       if (aSub.get() && aSub->data()->isValid()) {
 514         theReasons.insert(aSub);
 515       }
 516     }
 517   }
 518 }
 519
 520 bool Model_Update::processFeature(FeaturePtr theFeature)
 521 {
 522   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 523
 524   if (!theFeature->data()->isValid()) { // deleted feature, just remove from all containers
 525     if (myModified.find(theFeature) != myModified.end())
 526       myModified.erase(theFeature);
 527     return false;
 528   }
 529
 530   if (theFeature->isPersistentResult()) {
 531     if (!std::dynamic_pointer_cast<Model_Document>((theFeature)->document())->executeFeatures())
 532       return false;
 533   }
 534
 535   if (myProcessed.find(theFeature) == myProcessed.end()) {
 536     myProcessed[theFeature] = 0;
 537   } else {
 538     int aCount = myProcessed[theFeature];
 539     if (aCount > 100) {
 540       // too many repetition of processing (in VS it may crash on 330 with stack overflow)
 541       Events_InfoMessage("Model_Update",
 542         "Feature '%1' is updated in infinitive loop").arg(theFeature->data()->name()).send();
 543       // to stop iteration
 544       myModified.clear();
 545       return false;
 546     }
 547     myProcessed[theFeature] = aCount + 1;
 548   }
 549
 550   // check this feature is not yet checked or processed
 551   bool aIsModified = myModified.find(theFeature) != myModified.end();
 552   if (!aIsModified && myIsFinish) { // get info about the modification for features without preview
 553     if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated) {
 554       aIsModified = true;
 555       std::set<std::shared_ptr<ModelAPI_Feature> > aNewSet;
 556       // contains itself, so, we don't know which was the reason and the reason is any
 557       aNewSet.insert(theFeature);
 558       myModified[theFeature] = aNewSet;
 559     }
 560   }
 561
 562 #ifdef DEB_UPDATE
 563     std::cout<<"* Process feature "<<theFeature->name()<<std::endl;
 564 #endif
 565
 566   // update the sketch plane before the sketch sub-elements are recomputed
 567   // (otherwise sketch will update plane, modify subs, after executed, but with old subs edges)
 568   if (aIsModified && theFeature->getKind() == "Sketch") {
 569 #ifdef DEB_UPDATE
 570     std::cout<<"****** Update sketch args "<<theFeature->name()<<std::endl;
 571 #endif
 572     AttributeSelectionPtr anExtSel = theFeature->selection("External");
 573     if (anExtSel.get()) {
 574       ResultPtr aContext = anExtSel->context();
 575       if (aContext.get() && aContext->document().get()) {
 576         FeaturePtr anExtBase = aContext->document()->feature(aContext);
 577         if (anExtBase.get()) {
 578           processFeature(anExtBase);
 579         }
 580       }
 581     }
 582     std::shared_ptr<GeomAPI_Shape> aShapeBefore = anExtSel->value();
 583     if (!aShapeBefore.get() && anExtSel->context()) aShapeBefore = anExtSel->context()->shape();
 584     updateArguments(theFeature);
 585     std::shared_ptr<GeomAPI_Shape> aShapeAfter = anExtSel->value();
 586     if (!aShapeAfter.get() && anExtSel->context()) aShapeAfter = anExtSel->context()->shape();
 587     // if selected plane is changed, try to re-take external references of all subs of the sketch
 588     if (aShapeBefore.get() && !aShapeBefore->isEqual(aShapeAfter)) {
 589       std::set<FeaturePtr> aWholeR;
 590       allReasons(theFeature, aWholeR);
 591       std::set<FeaturePtr>::iterator aRIter = aWholeR.begin();
 592       for(; aRIter != aWholeR.end(); aRIter++) {
 593         if ((*aRIter)->data()->selection("External"))
 594           (*aRIter)->attributeChanged("External");
 595       }
 596     }
 597   }
 598
 599   if (!aIsModified) { // no modification is needed
 600     return false;
 601   }
 602
 603   // evaluate parameter before the sub-elements update:
 604   // it updates dependencies on evaluation (#1085)
 605   if (theFeature->getKind() == "Parameter") {
 606     theFeature->execute();
 607   }
 608
 609   bool isReferencedInvalid = false;
 610   // check all features this feature depended on (recursive call of updateFeature)
 611   std::set<FeaturePtr>& aReasons = myModified[theFeature];
 612   bool allSubsUsed = aReasons.find(theFeature) != aReasons.end();
 613   if (allSubsUsed) {
 614     // add all subs in aReasons and temporary remove "theFeature" to avoid processing itself
 615     allReasons(theFeature, aReasons);
 616     aReasons.erase(theFeature);
 617   }
 618   // take reasons one by one (they may be added during the feature process
 619   // (circle by the radius of sketch)
 620   std::set<FeaturePtr> aProcessedReasons;
 621   while(!aReasons.empty()) {
 622     FeaturePtr aReason = *(aReasons.begin());
 623 #ifdef DEB_UPDATE
 624     //cout<<theFeature->name()<<" process next reason "<<aReason->name()<<endl;
 625 #endif
 626     if (aReason != theFeature && (aReason)->data()->isValid()) {
 627       if (processFeature(aReason))
 628         aIsModified = true;
 629       // check validity of aReason once again because it may be removed by dependent feature
 630       // (e.g. by SketchPlugin_IntersectionPoint)
 631       if (!aReason->data()->isValid() ||
 632           aReason->data()->execState() == ModelAPI_StateInvalidArgument)
 633         isReferencedInvalid = true;
 634     }
 635     // searching for the next not used reason
 636     aProcessedReasons.insert(aReason);
 637     aReasons.erase(aReason);
 638   }
 639   // restore the modified reasons: they will be used in the update of arguments
 640   if (allSubsUsed) { // restore theFeature in this set
 641     aProcessedReasons.insert(theFeature);
 642   }
 643   myModified[theFeature] = aProcessedReasons;
 644
 645   // do not execute the composite that contains the current
 646   bool isPostponedMain = false;
 647   CompositeFeaturePtr aCompos = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 648   if (theFeature->getKind() == "ExtrusionSketch" && aCompos.get()) {
 649     CompositeFeaturePtr aCurrentOwner =
 650       ModelAPI_Tools::compositeOwner(theFeature->document()->currentFeature(false));
 651     isPostponedMain = aCurrentOwner.get() && aCompos->isSub(aCurrentOwner);
 652   } else if (theFeature->getKind() == "Sketch" &&
 653     std::dynamic_pointer_cast<Model_Document>((theFeature)->document())->executeFeatures()) {
 654     // send event that sketch is prepared to be recomputed
 655     static Events_ID anID = Events_Loop::eventByName("SketchPrepared");
 656     std::shared_ptr<Events_Message> aMsg(new Events_Message(anID, this));
 657     Events_Loop* aLoop = Events_Loop::loop();
 658     // in case it is finish operation, flush for the sketch other events (#2450)
 659     aLoop->flush(aLoop->eventByName(EVENT_OBJECT_UPDATED));
 660     aLoop->send(aMsg);
 661     // check that sub-elements of sketch are updated => sketch must be re-processed
 662     std::set<FeaturePtr> aWholeR;
 663     allReasons(theFeature, aWholeR);
 664     std::set<FeaturePtr>::iterator aRIter = aWholeR.begin();
 665     for(; aRIter != aWholeR.end(); aRIter++) {
 666       if (myModified.find(*aRIter) != myModified.end()) {
 667         processFeature(theFeature);
 668         return true;
 669       }
 670     }
 671   }
 672
 673 #ifdef DEB_UPDATE
 674   std::cout<<"Update args "<<theFeature->name()<<std::endl;
 675 #endif
 676   // TestImport.py : after arguments are updated, theFeature may be removed
 677   if (!theFeature->data()->isValid())
 678     return false;
 679   // Update selection and parameters attributes first, before sub-features analysis (sketch plane).
 680   updateArguments(theFeature);
 681
 682   // add this feature to the processed right now to be able remove it from this list on
 683   // update signal during this feature execution
 684   myModified.erase(theFeature);
 685   if (myNotPersistentRefs.find(theFeature) != myNotPersistentRefs.end())
 686     myNotPersistentRefs.erase(theFeature);
 687   if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated)
 688     theFeature->data()->execState(ModelAPI_StateDone);
 689
 690   // this checking must be after the composite feature sub-elements processing:
 691   // composite feature status may depend on it's sub-elements
 692   if ((theFeature->data()->execState() == ModelAPI_StateInvalidArgument || isReferencedInvalid) &&
 693     theFeature->getKind() != "Part") {
 694       // don't disable Part because it will make disabled all the features
 695       // (performance and problems with the current feature)
 696   #ifdef DEB_UPDATE
 697     std::cout<<"Invalid args "<<theFeature->name()<<std::endl;
 698   #endif
 699     theFeature->eraseResults(false);
 700     redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 701     return true; // so, feature is modified (results are erased)
 702   }
 703
 704   // execute feature if it must be updated
 705   ModelAPI_ExecState aState = theFeature->data()->execState();
 706   if (aFactory->validate(theFeature)) {
 707     if (!isPostponedMain) {
 708       bool aDoExecute = true;
 709       if (myUpdateBlocked) {
 710         if (!theFeature->isStable()) {
 711           aDoExecute = true;
 712         } else if (theFeature->results().size()) { // execute only not-results features
 713           aDoExecute = !(theFeature->firstResult()->groupName() == ModelAPI_ResultBody::group() ||
 714             theFeature->firstResult()->groupName() == ModelAPI_ResultPart::group() ||
 715             theFeature->getKind() == "Sketch");
 716         } else {
 717           aDoExecute = aState != ModelAPI_StateInvalidArgument;
 718         }
 719       }
 720       if (aDoExecute) {
 721         executeFeature(theFeature);
 722       } else {
 723         // store information that this feature must be executed later
 724         theFeature->data()->execState(ModelAPI_StateMustBeUpdated);
 725       }
 726     }
 727   } else {
 728     #ifdef DEB_UPDATE
 729       std::cout<<"Feature is not valid, erase results "<<theFeature->name()<<std::endl;
 730     #endif
 731     theFeature->eraseResults(false);
 732     redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 733   }
 734   return true;
 735 }
 736
 737 void Model_Update::redisplayWithResults(
 738   FeaturePtr theFeature, const ModelAPI_ExecState theState, bool theUpdateState)
 739 {
 740   // make updated and redisplay all results
 741   static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 742
 743   std::list<ResultPtr> allResults;
 744   ModelAPI_Tools::allResults(theFeature, allResults);
 745   std::list<ResultPtr>::iterator aRIter = allResults.begin();
 746   for (; aRIter != allResults.cend(); aRIter++) {
 747     std::shared_ptr<ModelAPI_Result> aRes = *aRIter;
 748     if (!aRes->isDisabled()) {
 749       // update state only for enabled results
 750       // (Placement Result Part may make the original Part Result as invalid)
 751       if (theUpdateState)
 752         aRes->data()->execState(theState);
 753     }
 754     if (theFeature->data()->updateID() > aRes->data()->updateID()) {
 755       aRes->data()->setUpdateID(theFeature->data()->updateID());
 756     }
 757     ModelAPI_EventCreator::get()->sendUpdated(aRes, EVENT_DISP);
 758   }
 759   // to redisplay "presentable" feature (for ex. distance constraint)
 760   ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
 761   if (theUpdateState)
 762     theFeature->data()->execState(theState);
 763 }
 764
 765 /// Updates the state by the referenced object: if something bad with it, set state for this one
 766 ModelAPI_ExecState stateByReference(ObjectPtr theTarget, const ModelAPI_ExecState theCurrent)
 767 {
 768   if (theTarget) {
 769     ModelAPI_ExecState aRefState = theTarget->data()->execState();
 770     if (aRefState == ModelAPI_StateMustBeUpdated) {
 771       if (theCurrent == ModelAPI_StateDone)
 772         return ModelAPI_StateMustBeUpdated;
 773     } else if (aRefState != ModelAPI_StateDone) {
 774       return ModelAPI_StateInvalidArgument;
 775     }
 776   }
 777   return theCurrent;
 778 }
 779
 780 void Model_Update::updateArguments(FeaturePtr theFeature) {
 781   // perform this method also for disabled features: to make "not done" state for
 782   // features referenced to the active and modified features
 783   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 784
 785   ModelAPI_ExecState aState = theFeature->data()->execState();
 786   if (aState == ModelAPI_StateExecFailed) { // try again failed feature: issue 577
 787     aState = ModelAPI_StateMustBeUpdated;
 788   }
 789   if (aState == ModelAPI_StateInvalidArgument) // a chance to be corrected
 790     aState = ModelAPI_StateMustBeUpdated;
 791   // check the parameters state
 792   // Integer
 793   {
 794     std::list<AttributePtr> anAttrinbutes =
 795       theFeature->data()->attributes(ModelAPI_AttributeInteger::typeId());
 796     std::list<AttributePtr>::iterator anIter = anAttrinbutes.begin();
 797     for(; anIter != anAttrinbutes.end(); anIter++) {
 798       AttributeIntegerPtr anAttribute =
 799         std::dynamic_pointer_cast<ModelAPI_AttributeInteger>(*anIter);
 800       if (anAttribute.get() && !anAttribute->text().empty()) {
 801         if (myIsParamUpdated) {
 802           ModelAPI_AttributeEvalMessage::send(anAttribute, this);
 803         }
 804         if (anAttribute->expressionInvalid()) {
 805           aState = ModelAPI_StateInvalidArgument;
 806         }
 807       }
 808     }
 809   }
 810   // Double
 811   {
 812     std::list<AttributePtr> aDoubles =
 813       theFeature->data()->attributes(ModelAPI_AttributeDouble::typeId());
 814     std::list<AttributePtr>::iterator aDoubleIter = aDoubles.begin();
 815     for(; aDoubleIter != aDoubles.end(); aDoubleIter++) {
 816       AttributeDoublePtr aDouble =
 817         std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(*aDoubleIter);
 818       if (aDouble.get() && !aDouble->text().empty()) {
 819         if (myIsParamUpdated) {
 820           ModelAPI_AttributeEvalMessage::send(aDouble, this);
 821         }
 822         if (aDouble->expressionInvalid()) {
 823           aState = ModelAPI_StateInvalidArgument;
 824         }
 825       }
 826     }
 827   }
 828   // Point
 829   {
 830     std::list<AttributePtr> anAttributes =
 831       theFeature->data()->attributes(GeomDataAPI_Point::typeId());
 832     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 833     for(; anIter != anAttributes.end(); anIter++) {
 834       AttributePointPtr aPointAttribute =
 835         std::dynamic_pointer_cast<GeomDataAPI_Point>(*anIter);
 836       if (aPointAttribute.get() && (!aPointAttribute->textX().empty() ||
 837           !aPointAttribute->textY().empty() || !aPointAttribute->textZ().empty())) {
 838         if (myIsParamUpdated) {
 839           ModelAPI_AttributeEvalMessage::send(aPointAttribute, this);
 840         }
 841         if ((!aPointAttribute->textX().empty() && aPointAttribute->expressionInvalid(0)) ||
 842           (!aPointAttribute->textY().empty() && aPointAttribute->expressionInvalid(1)) ||
 843           (!aPointAttribute->textZ().empty() && aPointAttribute->expressionInvalid(2)))
 844           aState = ModelAPI_StateInvalidArgument;
 845       }
 846     }
 847   }
 848   // Point2D
 849   {
 850     std::list<AttributePtr> anAttributes =
 851       theFeature->data()->attributes(GeomDataAPI_Point2D::typeId());
 852     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 853     for(; anIter != anAttributes.end(); anIter++) {
 854       AttributePoint2DPtr aPoint2DAttribute =
 855         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(*anIter);
 856       if (aPoint2DAttribute.get()) {
 857         if (myIsParamUpdated && (!aPoint2DAttribute->textX().empty() ||
 858             !aPoint2DAttribute->textY().empty())) {
 859           ModelAPI_AttributeEvalMessage::send(aPoint2DAttribute, this);
 860         }
 861         if ((!aPoint2DAttribute->textX().empty() && aPoint2DAttribute->expressionInvalid(0)) ||
 862           (!aPoint2DAttribute->textY().empty() && aPoint2DAttribute->expressionInvalid(1)))
 863           aState = ModelAPI_StateInvalidArgument;
 864       }
 865     }
 866   }
 867   // update the selection attributes if any
 868   std::list<AttributePtr> aRefs =
 869     theFeature->data()->attributes(ModelAPI_AttributeSelection::typeId());
 870   std::list<AttributePtr>::iterator aRefsIter = aRefs.begin();
 871   for (; aRefsIter != aRefs.end(); aRefsIter++) {
 872     std::shared_ptr<ModelAPI_AttributeSelection> aSel =
 873       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(*aRefsIter);
 874     ObjectPtr aContext = aSel->context();
 875     // update argument only if the referenced object is ready to use
 876     if (aContext.get() && !aContext->isDisabled()) {
 877       if (isReason(theFeature, aContext)) {
 878         if (!aSel->update()) { // this must be done on execution since it may be long operation
 879           bool isObligatory = !aFactory->isNotObligatory(
 880             theFeature->getKind(), theFeature->data()->id(aSel)) &&
 881             aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 882           if (isObligatory)
 883             aState = ModelAPI_StateInvalidArgument;
 884         }
 885       }
 886     } else if (aContext.get()) {
 887       // here it may be not obligatory, but if the reference is wrong, it should not be correct
 888       bool isObligatory = aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 889       if (isObligatory)
 890         aState = ModelAPI_StateInvalidArgument;
 891     }
 892   }
 893   // update the selection list attributes if any
 894   aRefs = theFeature->data()->attributes(ModelAPI_AttributeSelectionList::typeId());
 895   for (aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
 896     std::shared_ptr<ModelAPI_AttributeSelectionList> aSel =
 897       std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(*aRefsIter);
 898     for(int a = aSel->size() - 1; a >= 0; a--) {
 899       std::shared_ptr<ModelAPI_AttributeSelection> aSelAttr =
 900         std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(aSel->value(a));
 901       if (aSelAttr) {
 902         ObjectPtr aContext = aSelAttr->context();
 903         // update argument only if the referenced object is ready to use
 904         if (aContext.get() && !aContext->isDisabled() && !aSelAttr->isInvalid()) {
 905           if (isReason(theFeature, aContext)) {
 906             if (!aSelAttr->update()) {
 907               bool isObligatory = !aFactory->isNotObligatory(
 908                 theFeature->getKind(), theFeature->data()->id(aSel)) &&
 909                 aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 910               if (isObligatory)
 911                 aState = ModelAPI_StateInvalidArgument;
 912             }
 913           }
 914         } else if (aContext.get() || aSelAttr->isInvalid()) {
 915           // here it may be not obligatory, but if the reference is wrong, it should not be correct
 916           bool isObligatory = aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 917           if (isObligatory)
 918             aState = ModelAPI_StateInvalidArgument;
 919         }
 920       }
 921     }
 922   }
 923
 924   if (aState != ModelAPI_StateDone)
 925     theFeature->data()->execState(aState);
 926 }
 927
 928 bool Model_Update::isReason(std::shared_ptr<ModelAPI_Feature>& theFeature,
 929      std::shared_ptr<ModelAPI_Object> theReason)
 930 {
 931   std::map<std::shared_ptr<ModelAPI_Feature>, std::set<std::shared_ptr<ModelAPI_Feature> > >
 932     ::iterator aReasonsIt = myModified.find(theFeature);
 933   if (aReasonsIt != myModified.end()) {
 934     if (aReasonsIt->second.find(theFeature) != aReasonsIt->second.end())
 935       return true; // any is reason if it contains itself
 936     FeaturePtr aReasFeat = std::dynamic_pointer_cast<ModelAPI_Feature>(theReason);
 937     if (!aReasFeat.get()) { // try to get feature of this result
 938       ResultPtr aReasRes = std::dynamic_pointer_cast<ModelAPI_Result>(theReason);
 939       if (aReasRes.get())
 940         aReasFeat = theReason->document()->feature(aReasRes);
 941     }
 942     if (aReasonsIt->second.find(aReasFeat) != aReasonsIt->second.end())
 943       return true;
 944   }
 945   // another try: postponed modification by not-persistences
 946   std::map<std::shared_ptr<ModelAPI_Feature>, std::set<std::shared_ptr<ModelAPI_Feature> > >
 947     ::iterator aNotPersist = myNotPersistentRefs.find(theFeature);
 948   if (aNotPersist != myNotPersistentRefs.end()) {
 949     FeaturePtr aReasFeat = std::dynamic_pointer_cast<ModelAPI_Feature>(theReason);
 950     if (!aReasFeat.get()) { // try to get feature of this result
 951       ResultPtr aReasRes = std::dynamic_pointer_cast<ModelAPI_Result>(theReason);
 952       if (aReasRes.get())
 953         aReasFeat = theReason->document()->feature(aReasRes);
 954     }
 955     if (aNotPersist->second.find(aReasFeat) != aNotPersist->second.end())
 956       return true;
 957   }
 958
 959   // this case only for not-previewed items update state, nothing is changed in args for it
 960   return false;
 961 }
 962
 963 void Model_Update::executeFeature(FeaturePtr theFeature)
 964 {
 965 #ifdef DEB_UPDATE
 966   std::cout<<"Execute Feature "<<theFeature->name()<<std::endl;
 967 #endif
 968   // execute in try-catch to avoid internal problems of the feature
 969   ModelAPI_ExecState aState = ModelAPI_StateDone;
 970   theFeature->data()->execState(ModelAPI_StateDone);
 971   try {
 972     theFeature->execute();
 973     if (theFeature->data()->execState() != ModelAPI_StateDone) {
 974       aState = ModelAPI_StateExecFailed;
 975     } else {
 976       aState = ModelAPI_StateDone;
 977     }
 978   } catch(...) {
 979     aState = ModelAPI_StateExecFailed;
 980     Events_InfoMessage("Model_Update",
 981       "Feature %1 has failed during the execution").arg(theFeature->getKind()).send();
 982   }
 983   // The macro feature has to be deleted in any case even its execution is failed
 984   myWaitForFinish.insert(theFeature);
 985   if (aState != ModelAPI_StateDone) {
 986     theFeature->eraseResults(false);
 987   }
 988   theFeature->data()->setUpdateID(ModelAPI_Session::get()->transactionID());
 989   redisplayWithResults(theFeature, aState);
 990 }
 991
 992 // it is called on GUI edit of feature start
 993 // LCOV_EXCL_START
 994 void Model_Update::updateStability(void* theSender)
 995 {
 996   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 997   if (theSender) {
 998     bool added = false; // object may be was crated
 999     ModelAPI_Object* aSender = static_cast<ModelAPI_Object*>(theSender);
1000     if (aSender && aSender->document()) {
1001       FeaturePtr aFeatureSender =
1002         std::dynamic_pointer_cast<ModelAPI_Feature>(aSender->data()->owner());
1003       if (aFeatureSender.get()) {
1004         Model_Objects* aDocObjects =
1005           std::dynamic_pointer_cast<Model_Document>(aSender->document())->objects();
1006         if (aDocObjects) {
1007           //aDocObjects->synchronizeBackRefs();
1008           // remove or add all concealment refs from this feature
1009           std::list<std::pair<std::string, std::list<ObjectPtr> > > aRefs;
1010           aSender->data()->referencesToObjects(aRefs);
1011           std::list<std::pair<std::string, std::list<ObjectPtr> > >::iterator
1012             aRefIt = aRefs.begin();
1013           for(; aRefIt != aRefs.end(); aRefIt++) {
1014             if (!aFactory->isConcealed(aFeatureSender->getKind(), aRefIt->first))
1015               // take into account only concealed references
1016               // (do not remove the sketch constraint and the edge on constraint edit)
1017               continue;
1018             std::list<ObjectPtr>& aRefFeaturesList = aRefIt->second;
1019             std::list<ObjectPtr>::iterator aReferenced = aRefFeaturesList.begin();
1020             for(; aReferenced != aRefFeaturesList.end(); aReferenced++) {
1021                // stability is only on results: feature to feature reference mean nested
1022               // features, that will remove nesting references
1023               if (aReferenced->get() && (*aReferenced)->data()->isValid() &&
1024                 (*aReferenced)->groupName() != ModelAPI_Feature::group()) {
1025                 std::shared_ptr<Model_Data> aData =
1026                   std::dynamic_pointer_cast<Model_Data>((*aReferenced)->data());
1027                 if (aFeatureSender->isStable()) {
1028                   aData->addBackReference(aFeatureSender, aRefIt->first);
1029                 } else {
1030                   aData->removeBackReference(aFeatureSender, aRefIt->first);
1031                   added = true; // remove of concealment may be caused creation of some result
1032                 }
1033               }
1034             }
1035           }
1036         }
1037       }
1038     }
1039     if (added) {
1040       static Events_Loop* aLoop = Events_Loop::loop();
1041       static Events_ID kEventCreated = aLoop->eventByName(EVENT_OBJECT_CREATED);
1042       aLoop->flush(kEventCreated);
1043     }
1044   }
1045 }
1046 // LCOV_EXCL_STOP
1047
1048 void Model_Update::updateSelection(const std::set<std::shared_ptr<ModelAPI_Object> >& theObjects)
1049 {
1050   std::set<std::shared_ptr<ModelAPI_Object> >::iterator anObj = theObjects.begin();
1051   for(; anObj != theObjects.end(); anObj++) {
1052     std::list<AttributePtr> aRefs =
1053       (*anObj)->data()->attributes(ModelAPI_AttributeSelection::typeId());
1054     std::list<AttributePtr>::iterator aRefsIter = aRefs.begin();
1055     for (; aRefsIter != aRefs.end(); aRefsIter++) {
1056       std::shared_ptr<Model_AttributeSelection> aSel =
1057         std::dynamic_pointer_cast<Model_AttributeSelection>(*aRefsIter);
1058       aSel->updateInHistory();
1059     }
1060     // update the selection list attributes if any
1061     aRefs = (*anObj)->data()->attributes(ModelAPI_AttributeSelectionList::typeId());
1062     for (aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
1063       std::shared_ptr<ModelAPI_AttributeSelectionList> aSel =
1064         std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(*aRefsIter);
1065       for(int a = aSel->size() - 1; a >= 0; a--) {
1066         std::shared_ptr<Model_AttributeSelection> aSelAttr =
1067           std::dynamic_pointer_cast<Model_AttributeSelection>(aSel->value(a));
1068         if (aSelAttr.get())
1069           aSelAttr->updateInHistory();
1070       }
1071     }
1072   }
1073 }