src/Model/Model_Update.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:        Model_Update.cxx
   4 // Created:     25 Jun 2014
   5 // Author:      Mikhail PONIKAROV
   6
   7 #include <Model_Update.h>
   8 #include <Model_Document.h>
   9 #include <Model_Data.h>
  10 #include <Model_Objects.h>
  11 #include <ModelAPI_Feature.h>
  12 #include <ModelAPI_Data.h>
  13 #include <ModelAPI_Document.h>
  14 #include <ModelAPI_Events.h>
  15 #include <ModelAPI_AttributeReference.h>
  16 #include <ModelAPI_AttributeRefList.h>
  17 #include <ModelAPI_AttributeRefAttr.h>
  18 #include <ModelAPI_AttributeSelection.h>
  19 #include <ModelAPI_AttributeSelectionList.h>
  20 #include <ModelAPI_Result.h>
  21 #include <ModelAPI_ResultPart.h>
  22 #include <ModelAPI_Validator.h>
  23 #include <ModelAPI_CompositeFeature.h>
  24 #include <ModelAPI_Session.h>
  25 #include <ModelAPI_Tools.h>
  26 #include <GeomDataAPI_Point.h>
  27 #include <GeomDataAPI_Point2D.h>
  28 #include <Events_Loop.h>
  29 #include <Events_LongOp.h>
  30 #include <Events_Error.h>
  31 #include <Config_PropManager.h>
  32
  33 using namespace std;
  34
  35 Model_Update MY_UPDATER_INSTANCE;  /// the only one instance initialized on load of the library
  36 //#define DEB_UPDATE
  37
  38 Model_Update::Model_Update()
  39 {
  40   Events_Loop* aLoop = Events_Loop::loop();
  41   static const Events_ID kChangedEvent = aLoop->eventByName("PreferenceChanged");
  42   aLoop->registerListener(this, kChangedEvent);
  43   static const Events_ID kRebuildEvent = aLoop->eventByName("Rebuild");
  44   aLoop->registerListener(this, kRebuildEvent);
  45   static const Events_ID kCreatedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_CREATED);
  46   aLoop->registerListener(this, kCreatedEvent);
  47   static const Events_ID kUpdatedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_UPDATED);
  48   aLoop->registerListener(this, kUpdatedEvent);
  49   static const Events_ID kMovedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_MOVED);
  50   aLoop->registerListener(this, kMovedEvent);
  51   static const Events_ID kOpFinishEvent = aLoop->eventByName("FinishOperation");
  52   aLoop->registerListener(this, kOpFinishEvent);
  53   static const Events_ID kOpAbortEvent = aLoop->eventByName("AbortOperation");
  54   aLoop->registerListener(this, kOpAbortEvent);
  55   static const Events_ID kOpStartEvent = aLoop->eventByName("StartOperation");
  56   aLoop->registerListener(this, kOpStartEvent);
  57
  58   Config_PropManager::registerProp("Model update", "automatic_rebuild", "Rebuild immediately",
  59                                    Config_Prop::Boolean, "false");
  60   myIsAutomatic =
  61     Config_PropManager::findProp("Model update", "automatic_rebuild")->value() == "true";
  62   myIsParamUpdated = false;
  63   myIsFinish = false;
  64 }
  65
  66 void Model_Update::processEvent(const std::shared_ptr<Events_Message>& theMessage)
  67 {
  68   static Events_Loop* aLoop = Events_Loop::loop();
  69   static const Events_ID kChangedEvent = aLoop->eventByName("PreferenceChanged");
  70   static const Events_ID kRebuildEvent = aLoop->eventByName("Rebuild");
  71   static const Events_ID kCreatedEvent = aLoop->eventByName(EVENT_OBJECT_CREATED);
  72   static const Events_ID kUpdatedEvent = aLoop->eventByName(EVENT_OBJECT_UPDATED);
  73   static const Events_ID kMovedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_MOVED);
  74   static const Events_ID kOpFinishEvent = aLoop->eventByName("FinishOperation");
  75   static const Events_ID kOpAbortEvent = aLoop->eventByName("AbortOperation");
  76   static const Events_ID kOpStartEvent = aLoop->eventByName("StartOperation");
  77   if (theMessage->eventID() == kChangedEvent) { // automatic and manual rebuild flag is changed
  78     bool aPropVal =
  79       Config_PropManager::findProp("Model update", "automatic_rebuild")->value() == "true";
  80     if (aPropVal != myIsAutomatic) { // something is changed
  81       myIsAutomatic = aPropVal;
  82       if (myIsAutomatic) // higher level of automatization => to rebuild
  83         processOperation(false);
  84     }
  85   } else if (theMessage->eventID() == kRebuildEvent) { // the rebuild command
  86     processOperation(true);
  87   } else if (theMessage->eventID() == kCreatedEvent || theMessage->eventID() == kUpdatedEvent ||
  88              theMessage->eventID() == kMovedEvent) {
  89     std::shared_ptr<ModelAPI_ObjectUpdatedMessage> aMsg =
  90         std::dynamic_pointer_cast<ModelAPI_ObjectUpdatedMessage>(theMessage);
  91     const std::set<ObjectPtr>& anObjs = aMsg->objects();
  92     std::set<ObjectPtr>::const_iterator anObjIter = anObjs.cbegin();
  93     bool isOnlyResults = true; // check that only results were changed: only redisplay is needed
  94     for(; anObjIter != anObjs.cend(); anObjIter++) {
  95       if (!std::dynamic_pointer_cast<ModelAPI_Result>(*anObjIter).get()) {
  96         isOnlyResults = false;
  97       }
  98       if ((*anObjIter)->groupName() == ModelAPI_ResultParameter::group()) {
  99         myIsParamUpdated = true;
 100       }
 101       // created objects are always must be up to date (python box feature)
 102       // and updated not in internal uptation chain
 103       myJustUpdated.insert(*anObjIter);
 104
 105       // something is updated during the execution: re-execute it (sketch update by parameters)
 106       if (myIsExecuted) {
 107         FeaturePtr anUpdated = std::dynamic_pointer_cast<ModelAPI_Feature>(*anObjIter);
 108         if (anUpdated.get() &&  anUpdated->data()->isValid() &&
 109             myProcessed.find(anUpdated) != myProcessed.end()) {
 110             if (anUpdated->isPreviewNeeded() || myIsFinish) {
 111               ModelAPI_ExecState aState = anUpdated->data()->execState();
 112               static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 113               if (aFactory->validate(anUpdated) && aState != ModelAPI_StateInvalidArgument) {
 114                 #ifdef DEB_UPDATE
 115                   std::cout<<"Execute immideately "<<anUpdated->name()<<std::endl;
 116                 #endif
 117                 executeFeature(anUpdated);
 118               } else {
 119                 anUpdated->eraseResults();
 120                 redisplayWithResults(anUpdated, ModelAPI_StateInvalidArgument); // result also must be updated
 121               }
 122             }
 123         }
 124       }
 125       #ifdef DEB_UPDATE
 126       if ((*anObjIter)->data() && (*anObjIter)->data()->isValid()) {
 127         std::cout<<"Add updated "<<(*anObjIter)->groupName()<<" "
 128           <<(*anObjIter)->data()->name()<<std::endl;
 129       }
 130       #endif
 131     }
 132     // this event is for solver update, not here, do not react immediately
 133     if (!isOnlyResults && !(theMessage->eventID() == kMovedEvent))
 134       processOperation(false);
 135   } else if (theMessage->eventID() == kOpFinishEvent || theMessage->eventID() == kOpAbortEvent ||
 136       theMessage->eventID() == kOpStartEvent) {
 137
 138     if (!(theMessage->eventID() == kOpStartEvent)) {
 139       myIsFinish = true;
 140       processOperation(true, theMessage->eventID() == kOpFinishEvent);
 141       myIsFinish = false;
 142     }
 143     // remove all macros before clearing all created
 144     std::set<ObjectPtr>::iterator anUpdatedIter = myWaitForFinish.begin();
 145     while(anUpdatedIter != myWaitForFinish.end()) {
 146       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(*anUpdatedIter);
 147       if (aFeature.get()) {
 148         // remove macro on finish
 149         if (aFeature->isMacro()) {
 150           aFeature->document()->removeFeature(aFeature);
 151           myWaitForFinish.erase(aFeature);
 152         }
 153         // to avoid the map update problems on "remove"
 154         if (myWaitForFinish.find(aFeature) == myWaitForFinish.end()) {
 155           anUpdatedIter = myWaitForFinish.begin();
 156         } else {
 157           anUpdatedIter++;
 158         }
 159       } else {
 160         anUpdatedIter++;
 161       }
 162     }
 163     // in the end of transaction everything is updated, so clear the old objects (the only one
 164     // place where results are cleared)
 165     myIsParamUpdated = false;
 166     myJustUpdated.clear();
 167     myWaitForFinish.clear();
 168   }
 169 }
 170
 171 bool Model_Update::iterateUpdate(std::shared_ptr<ModelAPI_CompositeFeature> theFeature)
 172 {
 173   myProcessIterator.push_back(IterationItem());
 174   IterationItem& aCurrent = *myProcessIterator.rbegin();
 175   if (theFeature.get()) {
 176     aCurrent.myMain = theFeature;
 177     // two cycles: parameters must be processed first
 178     for(int a = 0; a < theFeature->numberOfSubs(); a++) {
 179       FeaturePtr aSub = theFeature->subFeature(a);
 180       aCurrent.mySub = aSub;
 181       if (aSub->getKind() == "Parameter")
 182         updateFeature(aSub);
 183     }
 184     // number of subs can be changed in execution: like fillet
 185     for(int a = 0; a < theFeature->numberOfSubs(); a++) {
 186       FeaturePtr aSub = theFeature->subFeature(a);
 187       aCurrent.mySub = aSub;
 188       if (aSub->getKind() != "Parameter")
 189        updateFeature(aSub);
 190     }
 191   } else {
 192     DocumentPtr aRootDoc = ModelAPI_Session::get()->moduleDocument();
 193     Model_Objects* anObjs = std::dynamic_pointer_cast<Model_Document>(aRootDoc)->objects();
 194     if (!anObjs)
 195       return false;
 196     aCurrent.mySub = anObjs->firstFeature();
 197     for (; aCurrent.mySub.get(); aCurrent.mySub = anObjs->nextFeature(aCurrent.mySub)) {
 198       if (aCurrent.mySub->getKind() == "Parameter")
 199         updateFeature(aCurrent.mySub);
 200     }
 201     aCurrent.mySub = anObjs->firstFeature();
 202     for (; aCurrent.mySub.get(); aCurrent.mySub = anObjs->nextFeature(aCurrent.mySub)) {
 203       if (aCurrent.mySub->getKind() != "Parameter")
 204         updateFeature(aCurrent.mySub);
 205     }
 206   }
 207   // processing is finished, so, remove the iterated
 208   myProcessIterator.pop_back();
 209   return true; // iteration is finished correctly
 210 }
 211
 212 void Model_Update::processOperation(const bool theTotalUpdate, const bool theFinish)
 213 {
 214   if (theFinish) {
 215     // the hardcode (DBC asked): hide the sketch referenced by extrusion on apply
 216     std::set<std::shared_ptr<ModelAPI_Object> >::iterator aFIter;
 217     for(aFIter = myWaitForFinish.begin(); aFIter != myWaitForFinish.end(); aFIter++)
 218     {
 219       FeaturePtr aF = std::dynamic_pointer_cast<ModelAPI_Feature>(*aFIter);
 220       if (aF && aF->data()->isValid() && aF->getKind() == "Extrusion") {
 221         AttributeSelectionListPtr aBase = aF->selectionList("base");
 222         if (aBase.get()) {
 223           for(int a = aBase->size() - 1; a >= 0; a--) {
 224             ResultPtr aSketchRes = aBase->value(a)->context();
 225             if (aSketchRes) {
 226               aSketchRes->setDisplayed(false);
 227             }
 228           }
 229         }
 230       }
 231     }
 232   }
 233   // perform update of everything if needed
 234   if (!myIsExecuted) {
 235     #ifdef DEB_UPDATE
 236       std::cout<<"****** Start processing"<<std::endl;
 237     #endif
 238     myIsExecuted = true;
 239
 240     bool isAutomaticChanged = false;
 241
 242     if (theTotalUpdate && !myIsAutomatic) { // Apply button now works as "Rebuild"
 243       isAutomaticChanged = true;
 244       myIsAutomatic = true;
 245     }
 246     // init iteration from the root document
 247     myProcessed.clear(); // to avoid processing twice
 248     iterateUpdate(CompositeFeaturePtr());
 249
 250     if (isAutomaticChanged) myIsAutomatic = false;
 251     myProcessed.clear(); // to avoid keeping features in memory
 252     myIsExecuted = false;
 253
 254     // flush to update display
 255     static Events_Loop* aLoop = Events_Loop::loop();
 256     static Events_ID EVENT_DISP = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 257     aLoop->flush(EVENT_DISP);
 258     #ifdef DEB_UPDATE
 259       std::cout<<"****** End processing"<<std::endl;
 260     #endif
 261   }
 262 }
 263
 264 void Model_Update::updateFeature(FeaturePtr theFeature)
 265 {
 266   // check all features this feature depended on (recursive call of updateFeature)
 267   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 268
 269   if (myProcessed.find(theFeature) != myProcessed.end())
 270     return;
 271   myProcessed.insert(theFeature);
 272   if (theFeature->isDisabled())
 273     return;
 274
 275   #ifdef DEB_UPDATE
 276     std::cout<<"Update Feature "<<theFeature->name()<<std::endl;
 277   #endif
 278   CompositeFeaturePtr aCompos = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 279   // If automatice update is not needed and feature attributes were not updated right now,
 280   // do not execute it and do not update arguments.
 281   if (!myIsAutomatic && myJustUpdated.find(theFeature) == myJustUpdated.end() && !aCompos.get()) {
 282     // execute will be performed later, but some features may have not-result
 283     // presentations, so call update for them (like coincidence in the sketcher)
 284     static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 285     ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
 286     return;
 287   }
 288
 289   // Update selection and parameters attributes first, before sub-features analysis (sketch plane).
 290   updateArguments(theFeature);
 291
 292   // composite feature must be executed after sub-features execution
 293   if (aCompos) {
 294     if (!iterateUpdate(aCompos))
 295       return; // iteration was interrupted, so, interrupt the update of this feature (it will be done later)
 296     // reupdate arguments of composite feature: it may be changed during subs execution
 297     if (theFeature->data()->execState() != ModelAPI_StateMustBeUpdated)
 298       updateArguments(theFeature);
 299   }
 300   // this checking must be after the composite feature sub-elements processing:
 301   // composite feature status may depend on it's subelements
 302   if (theFeature->data()->execState() == ModelAPI_StateInvalidArgument) {
 303     theFeature->eraseResults();
 304     redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 305     return;
 306   }
 307
 308   bool aJustUpdated = myJustUpdated.find(theFeature) != myJustUpdated.end();
 309
 310   if (myIsAutomatic && theFeature->data()->execState() == ModelAPI_StateMustBeUpdated)
 311     aJustUpdated = true;
 312
 313   // On abort, undo or redo execute is not needed: results in document are updated automatically
 314   // But redisplay is needed: results are updated, must be also updated in the viewer.
 315   if (aJustUpdated &&
 316       !std::dynamic_pointer_cast<Model_Document>(theFeature->document())->executeFeatures()) {
 317     if (!theFeature->isPersistentResult()) { // not persistent must be re-executed on abort, etc.
 318       ModelAPI_ExecState aState = theFeature->data()->execState();
 319       if (aFactory->validate(theFeature)) {
 320         executeFeature(theFeature);
 321       } else {
 322         theFeature->eraseResults();
 323         redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 324       }
 325     } else {
 326       redisplayWithResults(theFeature, ModelAPI_StateNothing);
 327       if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated) { // it is done (in the tree)
 328         theFeature->data()->execState(ModelAPI_StateDone);
 329       }
 330     }
 331     return;
 332   }
 333
 334   // execute feature if it must be updated
 335   if (theFeature->isPreviewNeeded() || myIsFinish) {
 336     if (aJustUpdated) {
 337       ModelAPI_ExecState aState = theFeature->data()->execState();
 338       if (aFactory->validate(theFeature)) {
 339         #ifdef DEB_UPDATE
 340           std::cout<<"Execute Feature "<<theFeature->name()<<std::endl;
 341         #endif
 342         executeFeature(theFeature);
 343       } else {
 344         theFeature->eraseResults();
 345         redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 346       }
 347     }
 348   } else { // preview is not needed => make state Done
 349     if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated) {
 350       theFeature->data()->execState(ModelAPI_StateDone);
 351       if (aJustUpdated) // store that it must be updated on finish
 352         myJustUpdated.insert(theFeature);
 353     }
 354   }
 355 }
 356
 357 void Model_Update::redisplayWithResults(FeaturePtr theFeature, const ModelAPI_ExecState theState)
 358 {
 359   // make updated and redisplay all results
 360   static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 361   const std::list<std::shared_ptr<ModelAPI_Result> >& aResults = theFeature->results();
 362   std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aRIter = aResults.begin();
 363   for (; aRIter != aResults.cend(); aRIter++) {
 364     std::shared_ptr<ModelAPI_Result> aRes = *aRIter;
 365     if (!aRes->isDisabled()) {// update state only for enabled results (Placement Result Part may make the original Part Result as invalid)
 366       aRes->data()->execState(theState);
 367       if (theState == ModelAPI_StateDone) // feature become "done", so execution changed results
 368         myJustUpdated.insert(aRes);
 369     }
 370     if (theFeature->data()->updateID() > aRes->data()->updateID()) {
 371       aRes->data()->setUpdateID(theFeature->data()->updateID());
 372     }
 373     ModelAPI_EventCreator::get()->sendUpdated(aRes, EVENT_DISP);
 374   }
 375   // to redisplay "presentable" feature (for ex. distance constraint)
 376   ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
 377   theFeature->data()->execState(theState);
 378 }
 379
 380 /// Updates the state by the referenced object: if something bad with it, set state for this one
 381 ModelAPI_ExecState stateByReference(ObjectPtr theTarget, const ModelAPI_ExecState theCurrent)
 382 {
 383   if (theTarget) {
 384     ModelAPI_ExecState aRefState = theTarget->data()->execState();
 385     if (aRefState == ModelAPI_StateMustBeUpdated) {
 386       if (theCurrent == ModelAPI_StateDone)
 387         return ModelAPI_StateMustBeUpdated;
 388     } else if (aRefState != ModelAPI_StateDone) {
 389       return ModelAPI_StateInvalidArgument;
 390     }
 391   }
 392   return theCurrent;
 393 }
 394
 395 void Model_Update::updateArguments(FeaturePtr theFeature) {
 396   // perform this method also for disabled features: to make "not done" state for
 397   // features referenced to the active and modified features
 398
 399   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 400
 401   ModelAPI_ExecState aState = theFeature->data()->execState();
 402   if (aState == ModelAPI_StateExecFailed) { // try again failed feature: issue 577
 403     aState = ModelAPI_StateMustBeUpdated;
 404   }
 405   if (aState == ModelAPI_StateInvalidArgument) // a chance to be corrected
 406     aState = ModelAPI_StateMustBeUpdated;
 407   // check the parameters state
 408   // Double
 409   std::list<AttributePtr> aDoubles =
 410     theFeature->data()->attributes(ModelAPI_AttributeDouble::typeId());
 411   std::list<AttributePtr>::iterator aDoubleIter = aDoubles.begin();
 412   for(; aDoubleIter != aDoubles.end(); aDoubleIter++) {
 413     AttributeDoublePtr aDouble =
 414       std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(*aDoubleIter);
 415     if (aDouble.get() && !aDouble->text().empty()) {
 416       if (myIsParamUpdated) {
 417         ModelAPI_AttributeEvalMessage::send(aDouble, this);
 418       }
 419       if (aDouble->expressionInvalid()) {
 420         aState = ModelAPI_StateInvalidArgument;
 421       }
 422     }
 423   }
 424   // Point
 425   {
 426     std::list<AttributePtr> anAttributes =
 427       theFeature->data()->attributes(GeomDataAPI_Point::typeId());
 428     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 429     for(; anIter != anAttributes.end(); anIter++) {
 430       AttributePointPtr aPointAttribute =
 431         std::dynamic_pointer_cast<GeomDataAPI_Point>(*anIter);
 432       if (aPointAttribute.get()) {
 433         if (myIsParamUpdated) {
 434           ModelAPI_AttributeEvalMessage::send(aPointAttribute, this);
 435         }
 436         if ((!aPointAttribute->textX().empty() && aPointAttribute->expressionInvalid(0)) ||
 437           (!aPointAttribute->textY().empty() && aPointAttribute->expressionInvalid(1)) ||
 438           (!aPointAttribute->textZ().empty() && aPointAttribute->expressionInvalid(2)))
 439           aState = ModelAPI_StateInvalidArgument;
 440       }
 441     }
 442   }
 443   // Point2D
 444   {
 445     std::list<AttributePtr> anAttributes =
 446       theFeature->data()->attributes(GeomDataAPI_Point2D::typeId());
 447     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 448     for(; anIter != anAttributes.end(); anIter++) {
 449       AttributePoint2DPtr aPoint2DAttribute =
 450         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(*anIter);
 451       if (aPoint2DAttribute.get()) {
 452         if (myIsParamUpdated) {
 453           ModelAPI_AttributeEvalMessage::send(aPoint2DAttribute, this);
 454         }
 455         if ((!aPoint2DAttribute->textX().empty() && aPoint2DAttribute->expressionInvalid(0)) ||
 456           (!aPoint2DAttribute->textY().empty() && aPoint2DAttribute->expressionInvalid(1)))
 457           aState = ModelAPI_StateInvalidArgument;
 458       }
 459     }
 460   }
 461
 462   //if (aState == ModelAPI_StateDone) {// all referenced objects are ready to be used
 463   //std::cout<<"Execute feature "<<theFeature->getKind()<<std::endl;
 464   // before execution update the selection attributes if any
 465   list<AttributePtr> aRefs =
 466     theFeature->data()->attributes(ModelAPI_AttributeSelection::typeId());
 467   list<AttributePtr>::iterator aRefsIter = aRefs.begin();
 468   for (; aRefsIter != aRefs.end(); aRefsIter++) {
 469     std::shared_ptr<ModelAPI_AttributeSelection> aSel =
 470       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(*aRefsIter);
 471     ObjectPtr aContext = aSel->context();
 472     // update argument only if the referenced object is changed
 473     if (aContext.get() && !aContext->isDisabled()) {
 474       bool isObligatory = !aFactory->isNotObligatory(
 475         theFeature->getKind(), theFeature->data()->id(aSel)) &&
 476         aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 477       if (myJustUpdated.find(aContext) != myJustUpdated.end() ||
 478           aContext->data()->updateID() > theFeature->data()->updateID()) {
 479         if (aState == ModelAPI_StateDone)
 480           aState = ModelAPI_StateMustBeUpdated;
 481         if (!aSel->update()) { // this must be done on execution since it may be long operation
 482           if (isObligatory)
 483             aState = ModelAPI_StateInvalidArgument;
 484         }
 485       } else if (aSel->isInvalid()) { // not needed to update, but invalid (stated previously)
 486         aState = ModelAPI_StateInvalidArgument;
 487       }
 488     }
 489   }
 490   aRefs = theFeature->data()->attributes(ModelAPI_AttributeSelectionList::typeId());
 491   for (aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
 492     std::shared_ptr<ModelAPI_AttributeSelectionList> aSel =
 493       std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(*aRefsIter);
 494     for(int a = aSel->size() - 1; a >= 0; a--) {
 495       std::shared_ptr<ModelAPI_AttributeSelection> aSelAttr =
 496         std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(aSel->value(a));
 497       if (aSelAttr) {
 498         ObjectPtr aContext = aSelAttr->context();
 499         // update argument onlt if the referenced object is changed
 500         if (aContext.get() && !aContext->isDisabled()) {
 501           bool isObligatory = !aFactory->isNotObligatory(
 502             theFeature->getKind(), theFeature->data()->id(aSel)) &&
 503             aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 504           if ((myJustUpdated.find(aContext) != myJustUpdated.end() ||
 505                aContext->data()->updateID() > theFeature->data()->updateID())) {
 506             if (aState == ModelAPI_StateDone)
 507                 aState = ModelAPI_StateMustBeUpdated;
 508             if (!aSelAttr->update()) {
 509               if (isObligatory)
 510                 aState = ModelAPI_StateInvalidArgument;
 511             }
 512           } else if (aSelAttr->isInvalid()) {
 513             aState = ModelAPI_StateInvalidArgument;
 514           }
 515         }
 516       }
 517     }
 518   }
 519   // check all references: if referenced objects are updated, this object also must be updated
 520   // also check state of referenced objects: if they are not ready, inherit corresponding state
 521   std::list<std::pair<std::string, std::list<ObjectPtr> > > aRefsObj;
 522   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(theFeature->data());
 523   aData->referencesToObjects(aRefsObj);
 524   std::list<std::pair<std::string, std::list<ObjectPtr> > >::iterator aRef = aRefsObj.begin();
 525   for(; aRef != aRefsObj.end(); aRef++) {
 526     std::list<ObjectPtr>::iterator aRefObj = aRef->second.begin();
 527     for(; aRefObj != aRef->second.end(); aRefObj++) {
 528       // if reference is null, it may mean that this reference is to other document
 529       // the does not supported by RefList: parameters may be recomputed
 530       if (!aRefObj->get() && theFeature->firstResult().get() &&
 531                theFeature->firstResult()->groupName() == ModelAPI_ResultParameter::group()) {
 532           if (aState == ModelAPI_StateDone)
 533             aState = ModelAPI_StateMustBeUpdated;
 534       } else if (myJustUpdated.find(*aRefObj) != myJustUpdated.end() ||
 535              (aRefObj->get() && (*aRefObj)->data()->updateID() > theFeature->data()->updateID())) {
 536           if (aState == ModelAPI_StateDone)
 537             aState = ModelAPI_StateMustBeUpdated;
 538       }
 539       aState = stateByReference(*aRefObj, aState);
 540     }
 541   }
 542   // composites sub-elements
 543   CompositeFeaturePtr aCompos = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 544   // composite feature must be executed after sub-features execution
 545   if (aCompos) {
 546     // number of subs can be changed in execution: like fillet
 547     for(int a = 0; a < aCompos->numberOfSubs(); a++) {
 548       FeaturePtr aSub = aCompos->subFeature(a);
 549       if (aSub.get() && aState == ModelAPI_StateDone) {
 550         if (myJustUpdated.find(aSub) != myJustUpdated.end() ||
 551               (aSub->data()->updateID() > theFeature->data()->updateID())) {
 552           aState = ModelAPI_StateMustBeUpdated;
 553         }
 554         // also check that all results of subs were updated: composite also depends on the results
 555         const std::list<std::shared_ptr<ModelAPI_Result> >& aResults = aSub->results();
 556         std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aResIter = aResults.begin();
 557         for(; aResIter != aResults.end(); aResIter++) {
 558           if (aResIter->get() && (*aResIter)->data()->isValid() && !(*aResIter)->isDisabled() &&
 559                 (myJustUpdated.find(*aResIter) != myJustUpdated.end() ||
 560                   ((*aResIter)->data()->updateID() > theFeature->data()->updateID()))) {
 561             aState = ModelAPI_StateMustBeUpdated;
 562           }
 563         }
 564       }
 565     }
 566   }
 567
 568
 569   if (aState != ModelAPI_StateDone)
 570     theFeature->data()->execState(aState);
 571 }
 572
 573 void Model_Update::executeFeature(FeaturePtr theFeature)
 574 {
 575   // execute in try-catch to avoid internal problems of the feature
 576   ModelAPI_ExecState aState = ModelAPI_StateDone;
 577   theFeature->data()->execState(ModelAPI_StateDone);
 578   try {
 579     theFeature->execute();
 580     myJustUpdated.erase(theFeature);
 581     if (theFeature->data()->execState() != ModelAPI_StateDone) {
 582       aState = ModelAPI_StateExecFailed;
 583     } else {
 584       aState = ModelAPI_StateDone;
 585       myWaitForFinish.insert(theFeature);
 586     }
 587   } catch(...) {
 588     aState = ModelAPI_StateExecFailed;
 589     Events_Error::send(
 590       "Feature " + theFeature->getKind() + " has failed during the execution");
 591   }
 592   if (aState != ModelAPI_StateDone) {
 593     theFeature->eraseResults();
 594   }
 595   theFeature->data()->setUpdateID(ModelAPI_Session::get()->transactionID());
 596   redisplayWithResults(theFeature, aState);
 597 }