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