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