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   static const Events_ID kStabilityEvent = aLoop->eventByName(EVENT_STABILITY_CHANGED);
  58   aLoop->registerListener(this, kStabilityEvent);
  59
  60   /* not needed now with history line
  61   Config_PropManager::registerProp("Model update", "automatic_rebuild", "Rebuild immediately",
  62                                    Config_Prop::Boolean, "false");*/
  63   myIsAutomatic = true;
  64   //  Config_PropManager::findProp("Model update", "automatic_rebuild")->value() == "true";
  65   myIsParamUpdated = false;
  66   myIsFinish = false;
  67   myModification = 0;
  68   myModificationInStartProcessing = 0;
  69 }
  70
  71 void Model_Update::processEvent(const std::shared_ptr<Events_Message>& theMessage)
  72 {
  73   static Events_Loop* aLoop = Events_Loop::loop();
  74   static const Events_ID kChangedEvent = aLoop->eventByName("PreferenceChanged");
  75   static const Events_ID kRebuildEvent = aLoop->eventByName("Rebuild");
  76   static const Events_ID kCreatedEvent = aLoop->eventByName(EVENT_OBJECT_CREATED);
  77   static const Events_ID kUpdatedEvent = aLoop->eventByName(EVENT_OBJECT_UPDATED);
  78   static const Events_ID kMovedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_MOVED);
  79   static const Events_ID kOpFinishEvent = aLoop->eventByName("FinishOperation");
  80   static const Events_ID kOpAbortEvent = aLoop->eventByName("AbortOperation");
  81   static const Events_ID kOpStartEvent = aLoop->eventByName("StartOperation");
  82   static const Events_ID kStabilityEvent = aLoop->eventByName(EVENT_STABILITY_CHANGED);
  83 #ifdef DEB_UPDATE
  84   std::cout<<"****** Event "<<theMessage->eventID().eventText()<<std::endl;
  85 #endif
  86   if (theMessage->eventID() == kStabilityEvent)
  87     updateStability(theMessage->sender());
  88   if (theMessage->eventID() == kChangedEvent) { // automatic and manual rebuild flag is changed
  89     /*bool aPropVal =
  90       Config_PropManager::findProp("Model update", "automatic_rebuild")->value() == "true";
  91     if (aPropVal != myIsAutomatic) { // something is changed
  92       // myIsAutomatic = aPropVal;
  93       if (myIsAutomatic) // higher level of automatization => to rebuild
  94         processOperation(false);
  95     }*/
  96     return;
  97   } else if (theMessage->eventID() == kRebuildEvent) { // the rebuild command
  98     processOperation(true);
  99   } else if (theMessage->eventID() == kCreatedEvent || theMessage->eventID() == kUpdatedEvent ||
 100              theMessage->eventID() == kMovedEvent) {
 101     std::shared_ptr<ModelAPI_ObjectUpdatedMessage> aMsg =
 102         std::dynamic_pointer_cast<ModelAPI_ObjectUpdatedMessage>(theMessage);
 103     const std::set<ObjectPtr>& anObjs = aMsg->objects();
 104     std::set<ObjectPtr>::const_iterator anObjIter = anObjs.cbegin();
 105     bool isOnlyResults = true; // check that only results were changed: only redisplay is needed
 106     for(; anObjIter != anObjs.cend(); anObjIter++) {
 107       if (!std::dynamic_pointer_cast<ModelAPI_Result>(*anObjIter).get()) {
 108         isOnlyResults = false;
 109       }
 110       if ((*anObjIter)->groupName() == ModelAPI_ResultParameter::group()) {
 111         myIsParamUpdated = true;
 112       }
 113       if (myIsExecuted) // modifications from outside are with never IDs to take them into account in the current updates
 114         myModification++;
 115       // on undo/redo, abort do not update persisten features
 116       FeaturePtr anUpdated = std::dynamic_pointer_cast<ModelAPI_Feature>(*anObjIter);
 117       if (std::dynamic_pointer_cast<Model_Document>((*anObjIter)->document())->executeFeatures() ||
 118           (anUpdated.get() && !anUpdated->isPersistentResult())) {
 119         // created objects are always must be up to date (python box feature)
 120         // and updated not in internal uptation chain
 121         myUpdated[*anObjIter] = myModification;
 122
 123         // something is updated during the execution: re-execute it (sketch update by parameters or
 124         // Box macro that updates the upper features during the execution)
 125         if (myIsExecuted) {
 126           FeaturePtr anUpdated = std::dynamic_pointer_cast<ModelAPI_Feature>(*anObjIter);
 127           if (anUpdated.get() &&  anUpdated->data()->isValid())
 128             iterateUpdateBreak(anUpdated);
 129         }
 130 #ifdef DEB_UPDATE
 131         if (myIsExecuted) std::cout<<"During execution ";
 132         if ((*anObjIter)->data() && (*anObjIter)->data()->isValid()) {
 133           std::cout<<"add updated "<<(*anObjIter)->groupName()<<" "
 134             <<(*anObjIter)->data()->name()<<std::endl;
 135         }
 136 #endif
 137       }
 138
 139     }
 140     // this event is for solver update, not here, do not react immediately
 141     if (!isOnlyResults && !(theMessage->eventID() == kMovedEvent))
 142       processOperation(false);
 143   } else if (theMessage->eventID() == kOpFinishEvent || theMessage->eventID() == kOpAbortEvent ||
 144       theMessage->eventID() == kOpStartEvent) {
 145
 146     if (!(theMessage->eventID() == kOpStartEvent)) {
 147       myIsFinish = true;
 148       processOperation(true, theMessage->eventID() == kOpFinishEvent);
 149       myIsFinish = false;
 150     }
 151     // remove all macros before clearing all created
 152     std::set<ObjectPtr>::iterator anUpdatedIter = myWaitForFinish.begin();
 153     while(anUpdatedIter != myWaitForFinish.end()) {
 154       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(*anUpdatedIter);
 155       if (aFeature.get()) {
 156         // remove macro on finish
 157         if (aFeature->isMacro()) {
 158           aFeature->document()->removeFeature(aFeature);
 159           myWaitForFinish.erase(aFeature);
 160         }
 161         // to avoid the map update problems on "remove"
 162         if (myWaitForFinish.find(aFeature) == myWaitForFinish.end()) {
 163           anUpdatedIter = myWaitForFinish.begin();
 164         } else {
 165           anUpdatedIter++;
 166         }
 167       } else {
 168         anUpdatedIter++;
 169       }
 170     }
 171     // in the end of transaction everything is updated, so clear the old objects (the only one
 172     // place where results are cleared)
 173     myIsParamUpdated = false;
 174     myUpdated.clear();
 175     myModification = 0;
 176     myWaitForFinish.clear();
 177   }
 178 }
 179
 180 bool Model_Update::iterateUpdate(std::shared_ptr<ModelAPI_CompositeFeature> theFeature)
 181 {
 182   myProcessIterator.push_back(IterationItem(theFeature));
 183   IterationItem& aCurrent = *myProcessIterator.rbegin();
 184   // two cycles: parameters must be processed first
 185   for(aCurrent.startIteration(true); aCurrent.more(); aCurrent.next()) {
 186     if (aCurrent.current()->getKind() == "Parameter")
 187       updateFeature(aCurrent.current());
 188   }
 189   // number of subs can be changed in execution: like fillet
 190   for(aCurrent.startIteration(false); aCurrent.more(); aCurrent.next()) {
 191     FeaturePtr aSub = aCurrent.current();
 192     if (aSub->getKind() != "Parameter")
 193       updateFeature(aSub);
 194   }
 195   // processing is finished, so, remove the iterated
 196   bool aResult = !aCurrent.isBreaked(); // iteration is finished correctly, not breaked
 197   myProcessIterator.pop_back();
 198   return aResult;
 199 }
 200
 201 void Model_Update::iterateUpdateBreak(std::shared_ptr<ModelAPI_Feature> theFeature)
 202 {
 203   // checking that this feature is before the current iterated one: otherwise break is not needed
 204   std::list<IterationItem>::reverse_iterator aProcessed = myProcessIterator.rbegin();
 205   for(; aProcessed != myProcessIterator.rend(); aProcessed++) {
 206     if (aProcessed->isIterated(theFeature)) {
 207       if (aProcessed->isEarlierThanCurrent(theFeature)) {
 208         // break all lower level iterators
 209         std::list<IterationItem>::reverse_iterator aBreaked = myProcessIterator.rbegin();
 210         for(; aBreaked != aProcessed; aBreaked++) {
 211           aBreaked->setBreaked();
 212         }
 213         // for the current breaked, set iteration to this feature precisely
 214         aBreaked->setCurrentBefore(theFeature);
 215         //myModification++;
 216       }
 217       // the iterator that contains breaked is found, so, nothing else is needed
 218       return;
 219     }
 220   }
 221   // if this feature is not found in the list of the currently iterated, try to break the parent
 222   FeaturePtr aParent = ModelAPI_Tools::compositeOwner(theFeature);
 223   if (aParent.get())
 224     iterateUpdateBreak(aParent);
 225 }
 226
 227 void Model_Update::processOperation(const bool theTotalUpdate, const bool theFinish)
 228 {
 229   // perform update of everything if needed
 230   if (!myIsExecuted) {
 231     #ifdef DEB_UPDATE
 232       std::cout<<"****** Start processing"<<std::endl;
 233     #endif
 234     myIsExecuted = true;
 235     myModificationInStartProcessing = myModification;
 236
 237     bool isAutomaticChanged = false;
 238
 239     if (theTotalUpdate && !myIsAutomatic) { // Apply button now works as "Rebuild"
 240       isAutomaticChanged = true;
 241       myIsAutomatic = true;
 242     }
 243     // init iteration from the root document
 244     iterateUpdate(CompositeFeaturePtr());
 245
 246     if (isAutomaticChanged) myIsAutomatic = false;
 247     myIsExecuted = false;
 248     // flush updates just before "myModification" increment: to distinguish
 249     // updates by "execute" produced by this updater and other updates, coming outside,
 250     // which are really important for "processEvent" of this updater
 251     static Events_Loop* aLoop = Events_Loop::loop();
 252     static const Events_ID kUpdatedEvent = aLoop->eventByName(EVENT_OBJECT_UPDATED);
 253     aLoop->flush(kUpdatedEvent);
 254     myModification++;
 255
 256     // flush to update display
 257     static Events_ID EVENT_DISP = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 258     aLoop->flush(EVENT_DISP);
 259     #ifdef DEB_UPDATE
 260       std::cout<<"****** End processing"<<std::endl;
 261     #endif
 262   }
 263 }
 264
 265 bool Model_Update::isProcessed(const int theModificationID)
 266 {
 267   return theModificationID >= myModificationInStartProcessing &&
 268          theModificationID <= myModification;
 269 }
 270
 271 void Model_Update::updateFeature(FeaturePtr theFeature)
 272 {
 273   // check all features this feature depended on (recursive call of updateFeature)
 274   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 275
 276   if (theFeature->isDisabled()) {
 277     // possibly sub-elements are not disabled?
 278     CompositeFeaturePtr aCompos = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 279     if (aCompos)
 280       iterateUpdate(aCompos);
 281     return;
 282   }
 283
 284   // do not execute the composite that contains the current
 285   bool isPostponedMain = false;
 286   CompositeFeaturePtr aMain = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 287   if (theFeature->getKind() == "ExtrusionSketch" && aMain.get()) {
 288     CompositeFeaturePtr aCurrentOwner =
 289       ModelAPI_Tools::compositeOwner(theFeature->document()->currentFeature(false));
 290     isPostponedMain = aCurrentOwner.get() && aMain->isSub(aCurrentOwner);
 291   }
 292
 293   #ifdef DEB_UPDATE
 294     std::cout<<"Update Feature "<<theFeature->name()<<std::endl;
 295   #endif
 296   CompositeFeaturePtr aCompos = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 297   // If automatice update is not needed and feature attributes were not updated right now,
 298   // do not execute it and do not update arguments.
 299   if (!myIsAutomatic &&
 300        (myUpdated.find(theFeature) == myUpdated.end() || !isProcessed(myUpdated[theFeature]))
 301        && !aCompos.get()) {
 302     // execute will be performed later, but some features may have not-result
 303     // presentations, so call update for them (like coincidence in the sketcher)
 304     static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 305     ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
 306     return;
 307   }
 308
 309   // Update selection and parameters attributes first, before sub-features analysis (sketch plane).
 310   updateArguments(theFeature);
 311
 312   // composite feature must be executed after sub-features execution
 313   if (aCompos) {
 314     if (!iterateUpdate(aCompos))
 315       return; // iteration was interrupted, so, interrupt the update of this feature (it will be done later)
 316     // reupdate arguments of composite feature: it may be changed during subs execution
 317
 318     // issue 955: extrusion fuse sketch naming must be updated after the sketch update
 319     // so, comment this: if (theFeature->data()->execState() != ModelAPI_StateMustBeUpdated)
 320       updateArguments(theFeature);
 321   }
 322   // this checking must be after the composite feature sub-elements processing:
 323   // composite feature status may depend on it's subelements
 324   if (theFeature->data()->execState() == ModelAPI_StateInvalidArgument) {
 325     theFeature->eraseResults();
 326     redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 327     return;
 328   }
 329
 330   // only the currently updated features are executed
 331   bool aJustUpdated = myUpdated.find(theFeature) != myUpdated.end();
 332   if (aJustUpdated) {
 333     // if preview is not needed, the created feature was not updated before, so, myModification is not actual for this
 334     if (theFeature->isPreviewNeeded()) {
 335       aJustUpdated = isProcessed(myUpdated[theFeature]);
 336     }
 337   }
 338
 339   if (myIsAutomatic && theFeature->data()->execState() == ModelAPI_StateMustBeUpdated)
 340     aJustUpdated = true;
 341
 342   // On abort, undo or redo execute is not needed: results in document are updated automatically
 343   // But redisplay is needed: results are updated, must be also updated in the viewer.
 344   if (aJustUpdated &&
 345       !std::dynamic_pointer_cast<Model_Document>(theFeature->document())->executeFeatures()) {
 346     if (!theFeature->isPersistentResult()) { // not persistent must be re-executed on abort, etc.
 347       ModelAPI_ExecState aState = theFeature->data()->execState();
 348       if (aFactory->validate(theFeature)) {
 349         executeFeature(theFeature);
 350       } else {
 351         theFeature->eraseResults();
 352         redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 353       }
 354     } else {
 355       redisplayWithResults(theFeature, ModelAPI_StateNothing);
 356       if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated) { // it is done (in the tree)
 357         theFeature->data()->execState(ModelAPI_StateDone);
 358       }
 359       // it will be not updated with new modifications: only the currently updated features are updated
 360       //if (myUpdated.find(theFeature) != myUpdated.end()) {
 361       //  myUpdated.erase(theFeature); // do not update this persistent feature even in the future
 362       //}
 363     }
 364     return;
 365   }
 366
 367   // execute feature if it must be updated
 368   if (theFeature->isPreviewNeeded() || myIsFinish) {
 369     if (aJustUpdated) {
 370       ModelAPI_ExecState aState = theFeature->data()->execState();
 371       if (aFactory->validate(theFeature)) {
 372         if (!isPostponedMain) {
 373           #ifdef DEB_UPDATE
 374             std::cout<<"Execute Feature "<<theFeature->name()<<std::endl;
 375           #endif
 376           executeFeature(theFeature);
 377         }
 378       } else {
 379         #ifdef DEB_UPDATE
 380           std::cout<<"Feature is not valid, erase results "<<theFeature->name()<<std::endl;
 381         #endif
 382         theFeature->eraseResults();
 383         redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 384       }
 385     }
 386   } else { // preview is not needed => make state Done
 387     if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated) {
 388       theFeature->data()->execState(ModelAPI_StateDone);
 389       if (aJustUpdated) {// store that it must be updated on finish
 390         myUpdated[theFeature] = myModification;
 391         aFactory->validate(theFeature); // need to be validated to update the "Apply" state if not previewed
 392       }
 393     }
 394   }
 395 }
 396
 397 void Model_Update::redisplayWithResults(FeaturePtr theFeature, const ModelAPI_ExecState theState)
 398 {
 399   // make updated and redisplay all results
 400   static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 401   const std::list<std::shared_ptr<ModelAPI_Result> >& aResults = theFeature->results();
 402   std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aRIter = aResults.begin();
 403   for (; aRIter != aResults.cend(); aRIter++) {
 404     std::shared_ptr<ModelAPI_Result> aRes = *aRIter;
 405     if (!aRes->isDisabled()) {// update state only for enabled results (Placement Result Part may make the original Part Result as invalid)
 406       aRes->data()->execState(theState);
 407       if (theState == ModelAPI_StateDone) // feature become "done", so execution changed results
 408         myUpdated[aRes] = myModification;
 409     }
 410     if (theFeature->data()->updateID() > aRes->data()->updateID()) {
 411       aRes->data()->setUpdateID(theFeature->data()->updateID());
 412     }
 413     ModelAPI_EventCreator::get()->sendUpdated(aRes, EVENT_DISP);
 414     // iterate sub-bodies of compsolid
 415     ResultCompSolidPtr aComp = std::dynamic_pointer_cast<ModelAPI_ResultCompSolid>(aRes);
 416     if (aComp.get()) {
 417       int aNumSub = aComp->numberOfSubs();
 418       for(int a = 0; a < aNumSub; a++) {
 419         ResultPtr aSub = aComp->subResult(a);
 420         if (!aSub->isDisabled()) {// update state only for enabled results (Placement Result Part may make the original Part Result as invalid)
 421           aSub->data()->execState(theState);
 422           if (theState == ModelAPI_StateDone) // feature become "done", so execution changed results
 423             myUpdated[aSub] = myModification;
 424         }
 425         if (theFeature->data()->updateID() > aSub->data()->updateID()) {
 426           aSub->data()->setUpdateID(theFeature->data()->updateID());
 427         }
 428         ModelAPI_EventCreator::get()->sendUpdated(aSub, EVENT_DISP);
 429       }
 430     }
 431   }
 432   // to redisplay "presentable" feature (for ex. distance constraint)
 433   ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
 434   theFeature->data()->execState(theState);
 435 }
 436
 437 /// Updates the state by the referenced object: if something bad with it, set state for this one
 438 ModelAPI_ExecState stateByReference(ObjectPtr theTarget, const ModelAPI_ExecState theCurrent)
 439 {
 440   if (theTarget) {
 441     ModelAPI_ExecState aRefState = theTarget->data()->execState();
 442     if (aRefState == ModelAPI_StateMustBeUpdated) {
 443       if (theCurrent == ModelAPI_StateDone)
 444         return ModelAPI_StateMustBeUpdated;
 445     } else if (aRefState != ModelAPI_StateDone) {
 446       return ModelAPI_StateInvalidArgument;
 447     }
 448   }
 449   return theCurrent;
 450 }
 451
 452 bool Model_Update::isOlder(std::shared_ptr<ModelAPI_Feature> theFeature,
 453                            std::shared_ptr<ModelAPI_Object> theArgument)
 454 {
 455   int aFeatureID = theFeature->data()->updateID();
 456   int anArgID = theArgument->data()->updateID();
 457   if (aFeatureID < anArgID)
 458     return true;
 459   std::map<std::shared_ptr<ModelAPI_Object>, int >::iterator anAIter = myUpdated.find(theArgument);
 460   if (anAIter == myUpdated.end())
 461     return false;
 462   std::map<std::shared_ptr<ModelAPI_Object>, int >::iterator aFIter = myUpdated.find(theFeature);
 463   if (aFIter == myUpdated.end())
 464     return true; // argument is updated, but feature is not updated at all
 465   return aFIter->second < anAIter->second;
 466 }
 467
 468 void Model_Update::updateArguments(FeaturePtr theFeature) {
 469   // perform this method also for disabled features: to make "not done" state for
 470   // features referenced to the active and modified features
 471
 472   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 473
 474   ModelAPI_ExecState aState = theFeature->data()->execState();
 475   if (aState == ModelAPI_StateExecFailed) { // try again failed feature: issue 577
 476     aState = ModelAPI_StateMustBeUpdated;
 477   }
 478   if (aState == ModelAPI_StateInvalidArgument) // a chance to be corrected
 479     aState = ModelAPI_StateMustBeUpdated;
 480   // check the parameters state
 481   // Double
 482   std::list<AttributePtr> aDoubles =
 483     theFeature->data()->attributes(ModelAPI_AttributeDouble::typeId());
 484   std::list<AttributePtr>::iterator aDoubleIter = aDoubles.begin();
 485   for(; aDoubleIter != aDoubles.end(); aDoubleIter++) {
 486     AttributeDoublePtr aDouble =
 487       std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(*aDoubleIter);
 488     if (aDouble.get() && !aDouble->text().empty()) {
 489       if (myIsParamUpdated) {
 490         ModelAPI_AttributeEvalMessage::send(aDouble, this);
 491       }
 492       if (aDouble->expressionInvalid()) {
 493         aState = ModelAPI_StateInvalidArgument;
 494       }
 495     }
 496   }
 497   // Point
 498   {
 499     std::list<AttributePtr> anAttributes =
 500       theFeature->data()->attributes(GeomDataAPI_Point::typeId());
 501     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 502     for(; anIter != anAttributes.end(); anIter++) {
 503       AttributePointPtr aPointAttribute =
 504         std::dynamic_pointer_cast<GeomDataAPI_Point>(*anIter);
 505       if (aPointAttribute.get()) {
 506         if (myIsParamUpdated) {
 507           ModelAPI_AttributeEvalMessage::send(aPointAttribute, this);
 508         }
 509         if ((!aPointAttribute->textX().empty() && aPointAttribute->expressionInvalid(0)) ||
 510           (!aPointAttribute->textY().empty() && aPointAttribute->expressionInvalid(1)) ||
 511           (!aPointAttribute->textZ().empty() && aPointAttribute->expressionInvalid(2)))
 512           aState = ModelAPI_StateInvalidArgument;
 513       }
 514     }
 515   }
 516   // Point2D
 517   {
 518     std::list<AttributePtr> anAttributes =
 519       theFeature->data()->attributes(GeomDataAPI_Point2D::typeId());
 520     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 521     for(; anIter != anAttributes.end(); anIter++) {
 522       AttributePoint2DPtr aPoint2DAttribute =
 523         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(*anIter);
 524       if (aPoint2DAttribute.get()) {
 525         if (myIsParamUpdated) {
 526           ModelAPI_AttributeEvalMessage::send(aPoint2DAttribute, this);
 527         }
 528         if ((!aPoint2DAttribute->textX().empty() && aPoint2DAttribute->expressionInvalid(0)) ||
 529           (!aPoint2DAttribute->textY().empty() && aPoint2DAttribute->expressionInvalid(1)))
 530           aState = ModelAPI_StateInvalidArgument;
 531       }
 532     }
 533   }
 534
 535   //if (aState == ModelAPI_StateDone) {// all referenced objects are ready to be used
 536   //std::cout<<"Execute feature "<<theFeature->getKind()<<std::endl;
 537   // before execution update the selection attributes if any
 538   list<AttributePtr> aRefs =
 539     theFeature->data()->attributes(ModelAPI_AttributeSelection::typeId());
 540   list<AttributePtr>::iterator aRefsIter = aRefs.begin();
 541   for (; aRefsIter != aRefs.end(); aRefsIter++) {
 542     std::shared_ptr<ModelAPI_AttributeSelection> aSel =
 543       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(*aRefsIter);
 544     ObjectPtr aContext = aSel->context();
 545     // update argument only if the referenced object is changed
 546     if (aContext.get() && !aContext->isDisabled()) {
 547       bool isObligatory = !aFactory->isNotObligatory(
 548         theFeature->getKind(), theFeature->data()->id(aSel)) &&
 549         aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 550       if (isOlder(theFeature, aContext)) {
 551         if (aState == ModelAPI_StateDone)
 552           aState = ModelAPI_StateMustBeUpdated;
 553         if (!aSel->update()) { // this must be done on execution since it may be long operation
 554           if (isObligatory)
 555             aState = ModelAPI_StateInvalidArgument;
 556         }
 557       } else if (aSel->isInvalid()) { // not needed to update, but invalid (stated previously)
 558         if (isObligatory)
 559           aState = ModelAPI_StateInvalidArgument;
 560       }
 561     }
 562   }
 563   aRefs = theFeature->data()->attributes(ModelAPI_AttributeSelectionList::typeId());
 564   for (aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
 565     std::shared_ptr<ModelAPI_AttributeSelectionList> aSel =
 566       std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(*aRefsIter);
 567     for(int a = aSel->size() - 1; a >= 0; a--) {
 568       std::shared_ptr<ModelAPI_AttributeSelection> aSelAttr =
 569         std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(aSel->value(a));
 570       if (aSelAttr) {
 571         ObjectPtr aContext = aSelAttr->context();
 572         // update argument onlt if the referenced object is changed
 573         if (aContext.get() && !aContext->isDisabled()) {
 574           bool isObligatory = !aFactory->isNotObligatory(
 575             theFeature->getKind(), theFeature->data()->id(aSel)) &&
 576             aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 577           if (isOlder(theFeature, aContext)) {
 578             if (aState == ModelAPI_StateDone)
 579                 aState = ModelAPI_StateMustBeUpdated;
 580             if (!aSelAttr->update()) {
 581               if (isObligatory)
 582                 aState = ModelAPI_StateInvalidArgument;
 583             }
 584           } else if (aSelAttr->isInvalid()) {
 585             if (isObligatory)
 586               aState = ModelAPI_StateInvalidArgument;
 587           }
 588         }
 589       }
 590     }
 591   }
 592   // check all references: if referenced objects are updated, this object also must be updated
 593   // also check state of referenced objects: if they are not ready, inherit corresponding state
 594   std::list<std::pair<std::string, std::list<ObjectPtr> > > aRefsObj;
 595   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(theFeature->data());
 596   aData->referencesToObjects(aRefsObj);
 597   std::list<std::pair<std::string, std::list<ObjectPtr> > >::iterator aRef = aRefsObj.begin();
 598   for(; aRef != aRefsObj.end(); aRef++) {
 599     std::list<ObjectPtr>::iterator aRefObj = aRef->second.begin();
 600     for(; aRefObj != aRef->second.end(); aRefObj++) {
 601       // if reference is null, it may mean that this reference is to other document
 602       // the does not supported by RefList: parameters may be recomputed
 603       if (!aRefObj->get() && theFeature->firstResult().get() &&
 604                theFeature->firstResult()->groupName() == ModelAPI_ResultParameter::group()) {
 605           if (aState == ModelAPI_StateDone)
 606             aState = ModelAPI_StateMustBeUpdated;
 607       } else if (aRefObj->get() && isOlder(theFeature, *aRefObj)) {
 608         if (aState == ModelAPI_StateDone)
 609           aState = ModelAPI_StateMustBeUpdated;
 610       }
 611       aState = stateByReference(*aRefObj, aState);
 612     }
 613   }
 614   // composites sub-elements
 615   CompositeFeaturePtr aCompos = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 616   // composite feature must be executed after sub-features execution
 617   if (aCompos) {
 618     // number of subs can be changed in execution: like fillet
 619     int aNumSubs = aCompos->numberOfSubs();
 620     for(int a = 0; a < aNumSubs; a++) {
 621       FeaturePtr aSub = aCompos->subFeature(a);
 622       if (aSub.get() && aState == ModelAPI_StateDone) {
 623         if (isOlder(theFeature, aSub)) {
 624           aState = ModelAPI_StateMustBeUpdated;
 625         }
 626         // also check that all results of subs were updated: composite also depends on the results
 627         const std::list<std::shared_ptr<ModelAPI_Result> >& aResults = aSub->results();
 628         std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aResIter = aResults.begin();
 629         for(; aResIter != aResults.end(); aResIter++) {
 630           if (aResIter->get() && (*aResIter)->data()->isValid() && !(*aResIter)->isDisabled() &&
 631               isOlder(theFeature, *aResIter)) {
 632             aState = ModelAPI_StateMustBeUpdated;
 633           }
 634         }
 635       }
 636       if (a == aNumSubs - 1) // in case number of subs is changed, just recheck before end
 637         aNumSubs = aCompos->numberOfSubs();
 638     }
 639   }
 640
 641
 642   if (aState != ModelAPI_StateDone)
 643     theFeature->data()->execState(aState);
 644 }
 645
 646 void Model_Update::executeFeature(FeaturePtr theFeature)
 647 {
 648   // execute in try-catch to avoid internal problems of the feature
 649   ModelAPI_ExecState aState = ModelAPI_StateDone;
 650   theFeature->data()->execState(ModelAPI_StateDone);
 651   try {
 652     theFeature->execute();
 653     if (theFeature->data()->execState() != ModelAPI_StateDone) {
 654       aState = ModelAPI_StateExecFailed;
 655     } else {
 656       aState = ModelAPI_StateDone;
 657       myWaitForFinish.insert(theFeature);
 658     }
 659   } catch(...) {
 660     aState = ModelAPI_StateExecFailed;
 661     Events_Error::send(
 662       "Feature " + theFeature->getKind() + " has failed during the execution");
 663   }
 664   if (aState != ModelAPI_StateDone) {
 665     theFeature->eraseResults();
 666   }
 667   theFeature->data()->setUpdateID(ModelAPI_Session::get()->transactionID());
 668   redisplayWithResults(theFeature, aState);
 669 }
 670
 671 void Model_Update::updateStability(void* theSender)
 672 {
 673   if (theSender) {
 674     bool added = false; // object may be was crated
 675     ModelAPI_Object* aSender = static_cast<ModelAPI_Object*>(theSender);
 676     if (aSender && aSender->document()) {
 677       FeaturePtr aFeatureSender =
 678         std::dynamic_pointer_cast<ModelAPI_Feature>(aSender->data()->owner());
 679       if (aFeatureSender.get()) {
 680         Model_Objects* aDocObjects =
 681           std::dynamic_pointer_cast<Model_Document>(aSender->document())->objects();
 682         if (aDocObjects) {
 683           //aDocObjects->synchronizeBackRefs();
 684           // remove or add all concealment refs from this feature
 685           std::list<std::pair<std::string, std::list<ObjectPtr> > > aRefs;
 686           aSender->data()->referencesToObjects(aRefs);
 687           std::list<std::pair<std::string, std::list<ObjectPtr> > >::iterator aRefIt = aRefs.begin();
 688           for(; aRefIt != aRefs.end(); aRefIt++) {
 689             std::list<ObjectPtr>& aRefFeaturesList = aRefIt->second;
 690             std::list<ObjectPtr>::iterator aReferenced = aRefFeaturesList.begin();
 691             for(; aReferenced != aRefFeaturesList.end(); aReferenced++) {
 692                // stability is only on results: feature to feature reference mean nested
 693               // features, that will remove nesting references
 694               if (aReferenced->get() && (*aReferenced)->data()->isValid() &&
 695                 (*aReferenced)->groupName() != ModelAPI_Feature::group()) {
 696                 std::shared_ptr<Model_Data> aData =
 697                   std::dynamic_pointer_cast<Model_Data>((*aReferenced)->data());
 698                 if (aFeatureSender->isStable()) {
 699                   aData->addBackReference(aFeatureSender, aRefIt->first);
 700                 } else {
 701                   aData->removeBackReference(aFeatureSender, aRefIt->first);
 702                   added = true; // remove of concealment may be caused creation of some result
 703                 }
 704               }
 705             }
 706           }
 707         }
 708       }
 709     }
 710     if (added) {
 711       static Events_Loop* aLoop = Events_Loop::loop();
 712       static Events_ID kEventCreated = aLoop->eventByName(EVENT_OBJECT_CREATED);
 713       aLoop->flush(kEventCreated);
 714     }
 715   }
 716 }
 717
 718 ///////////////// Updated items iterator ////////////////////////
 719 Model_Update::IterationItem::IterationItem(std::shared_ptr<ModelAPI_CompositeFeature> theFeature)
 720 {
 721   myBreaked = false;
 722   myIsVirtual = false;
 723   myMain = theFeature;
 724   myObjects = NULL;
 725   if (!myMain.get() && ModelAPI_Session::get()->hasModuleDocument()) { // no document => nothing to do
 726     DocumentPtr aRootDoc = ModelAPI_Session::get()->moduleDocument();
 727     myObjects = std::dynamic_pointer_cast<Model_Document>(aRootDoc)->objects();
 728   }
 729   mySkipNext = false;
 730 }
 731
 732 void Model_Update::IterationItem::next()
 733 {
 734   if (mySkipNext) { // ignore one next
 735     mySkipNext = false;
 736     return;
 737   }
 738   if (!myBreaked) {
 739     if (myMain.get()) {
 740       myIndex++;
 741       int aNumSubs = myMain->numberOfSubs();
 742       if (myIndex == aNumSubs)
 743         return;
 744       // skip sub-objects, that are subs not only for this: sketch elements relatively to Part
 745       for(FeaturePtr aSub = myMain->subFeature(myIndex); aSub.get();
 746           aSub = myMain->subFeature(myIndex)) {
 747         aSub = myMain->subFeature(myIndex);
 748         CompositeFeaturePtr anOwner = ModelAPI_Tools::compositeOwner(aSub);
 749         if (!anOwner.get() || anOwner == myMain) {
 750           break;
 751         }
 752         myIndex++;
 753         if (myIndex == aNumSubs)
 754           break;
 755       }
 756     } else if (mySub.get()) {
 757       while(mySub.get()) {
 758         mySub = myObjects->nextFeature(mySub);
 759         CompositeFeaturePtr anOwner = ModelAPI_Tools::compositeOwner(mySub);
 760         // skip sub-objects, that are subs not only for this: sketch elements relatively to PartSet
 761         if (!anOwner.get()) {
 762           break;
 763         }
 764       }
 765     }
 766   }
 767 }
 768
 769 bool Model_Update::IterationItem::more()
 770 {
 771   if (myBreaked)
 772     return false;
 773   if (myMain.get())
 774     return myIndex < myMain->numberOfSubs();
 775   return mySub.get() != NULL;
 776 }
 777
 778 FeaturePtr Model_Update::IterationItem::current()
 779 {
 780   if (myMain.get())
 781     return myMain->subFeature(myIndex);
 782   return mySub;
 783 }
 784
 785 void Model_Update::IterationItem::setBreaked()
 786 {
 787   if (!myIsVirtual)
 788     myBreaked = true;
 789 }
 790
 791 void Model_Update::IterationItem::startIteration(const bool theVirtual)
 792 {
 793   myIsVirtual = theVirtual;
 794   if (myMain.get()) {
 795     myIndex = 0;
 796   } else if (myObjects) {
 797     mySub = myObjects->firstFeature();
 798   }
 799 }
 800
 801 bool Model_Update::IterationItem::isIterated(FeaturePtr theFeature)
 802 {
 803   if (myMain.get()) {
 804     if (myMain->isSub(theFeature)) {
 805       CompositeFeaturePtr anOwner = ModelAPI_Tools::compositeOwner(theFeature);
 806       if (!anOwner.get() || anOwner == myMain)
 807         return true;
 808     }
 809     return false;
 810   }
 811   // for the root document just check that this feature in this document and it is not sub
 812   return myObjects->owner() == theFeature->document() &&
 813          !ModelAPI_Tools::compositeOwner(theFeature).get();
 814 }
 815
 816 bool Model_Update::IterationItem::isEarlierThanCurrent(FeaturePtr theFeature)
 817 {
 818   if (myMain.get()) {
 819     for(int a = 0; a < myIndex; a++) {
 820       if (myMain->subFeature(a) == theFeature)
 821         return true;
 822     }
 823   } else {
 824     return !mySub.get() && !myObjects->isLater(theFeature, mySub);
 825   }
 826   return false;
 827 }
 828
 829 void Model_Update::IterationItem::setCurrentBefore(FeaturePtr theFeature)
 830 {
 831   if (myMain.get()) {
 832     for(int a = 0; a < myIndex; a++) {
 833       if (myMain->subFeature(a) == theFeature) {
 834         myIndex = a;
 835         break;
 836       }
 837     }
 838   } else {
 839     mySub = theFeature;
 840   }
 841   mySkipNext = true;
 842 }