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 kCreatedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_CREATED);
  44   aLoop->registerListener(this, kCreatedEvent);
  45   static const Events_ID kUpdatedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_UPDATED);
  46   aLoop->registerListener(this, kUpdatedEvent);
  47   static const Events_ID kOpFinishEvent = aLoop->eventByName("FinishOperation");
  48   aLoop->registerListener(this, kOpFinishEvent);
  49   static const Events_ID kOpAbortEvent = aLoop->eventByName("AbortOperation");
  50   aLoop->registerListener(this, kOpAbortEvent);
  51   static const Events_ID kOpStartEvent = aLoop->eventByName("StartOperation");
  52   aLoop->registerListener(this, kOpStartEvent);
  53   static const Events_ID kStabilityEvent = aLoop->eventByName(EVENT_STABILITY_CHANGED);
  54   aLoop->registerListener(this, kStabilityEvent);
  55
  56   //  Config_PropManager::findProp("Model update", "automatic_rebuild")->value() == "true";
  57   myIsParamUpdated = false;
  58   myIsFinish = false;
  59   myIsProcessed = false;
  60 }
  61
  62 void Model_Update::addModified(FeaturePtr theFeature, FeaturePtr theReason) {
  63   if (!theFeature->isPreviewNeeded() && !myIsFinish) {
  64     myProcessOnFinish.insert(theFeature);
  65     return;
  66   }
  67   if (myModified.find(theFeature) != myModified.end()) {
  68     if (theReason.get()) {
  69       std::cout<<"*** Add already modified "<<theFeature->name()<<std::endl;
  70       myModified[theFeature].insert(theReason);
  71     }
  72     return; // already is marked as modified, so, nothing to do, it will be processed
  73   }
  74   // do not add the disabled, but possibly the sub-elements are not disabled
  75   bool aIsDisabled = theFeature->isDisabled();
  76   if (!aIsDisabled) {
  77     std::set<std::shared_ptr<ModelAPI_Feature> > aNewSet;
  78     if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated) {
  79       // do not forget that in this case all were the reasons
  80       aNewSet.insert(theFeature);
  81     } else {
  82       if (theReason.get())
  83         aNewSet.insert(theReason);
  84     }
  85     myModified[theFeature] = aNewSet;
  86 #ifdef DEB_UPDATE
  87     std::cout<<"*** Add modified "<<theFeature->name()<<std::endl;
  88 #endif
  89   } else { // will be updated during the finish of the operation, or when it becomes enabled
  90     if (theFeature->data()->execState() == ModelAPI_StateDone)
  91       theFeature->data()->execState(ModelAPI_StateMustBeUpdated);
  92     else
  93       return; // do not need iteration deeply if it is already marked as modified or so
  94 #ifdef DEB_UPDATE
  95     std::cout<<"*** Set modified state "<<theFeature->name()<<std::endl;
  96 #endif
  97   }
  98   // clear processed and fill modified recursively
  99   const std::set<std::shared_ptr<ModelAPI_Attribute> >& aRefs = theFeature->data()->refsToMe();
 100   std::set<std::shared_ptr<ModelAPI_Attribute> >::const_iterator aRefIter = aRefs.cbegin();
 101   for(; aRefIter != aRefs.cend(); aRefIter++) {
 102     FeaturePtr aReferenced = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRefIter)->owner());
 103     if (aReferenced.get()) {
 104       addModified(aReferenced, theFeature);
 105     }
 106   }
 107   // proccess also results
 108   std::list<ResultPtr> allResults; // list of this feature and results
 109   ModelAPI_Tools::allResults(theFeature, allResults);
 110   std::list<ResultPtr>::iterator aRes = allResults.begin();
 111   for(; aRes != allResults.end(); aRes++) {
 112     const std::set<std::shared_ptr<ModelAPI_Attribute> >& aRefs = (*aRes)->data()->refsToMe();
 113     std::set<std::shared_ptr<ModelAPI_Attribute> >::const_iterator aRefIter = aRefs.cbegin();
 114     for(; aRefIter != aRefs.cend(); aRefIter++) {
 115       FeaturePtr aReferenced = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRefIter)->owner());
 116       if (aReferenced.get()) {
 117         addModified(aReferenced, theFeature);
 118       }
 119     }
 120   }
 121
 122   // also add part feature that contains this feature to the modified
 123   if (theFeature->document()->kind() != "PartSet") {
 124     FeaturePtr aPart = ModelAPI_Tools::findPartFeature(
 125       ModelAPI_Session::get()->moduleDocument(), theFeature->document());
 126     if (aPart.get())
 127       addModified(aPart, theFeature);
 128   }
 129   return;
 130 }
 131
 132 void Model_Update::processEvent(const std::shared_ptr<Events_Message>& theMessage)
 133 {
 134   static Events_Loop* aLoop = Events_Loop::loop();
 135   static const Events_ID kCreatedEvent = aLoop->eventByName(EVENT_OBJECT_CREATED);
 136   static const Events_ID kUpdatedEvent = aLoop->eventByName(EVENT_OBJECT_UPDATED);
 137   static const Events_ID kOpFinishEvent = aLoop->eventByName("FinishOperation");
 138   static const Events_ID kOpAbortEvent = aLoop->eventByName("AbortOperation");
 139   static const Events_ID kOpStartEvent = aLoop->eventByName("StartOperation");
 140   static const Events_ID kStabilityEvent = aLoop->eventByName(EVENT_STABILITY_CHANGED);
 141 #ifdef DEB_UPDATE
 142   std::cout<<"****** Event "<<theMessage->eventID().eventText()<<std::endl;
 143 #endif
 144   if (theMessage->eventID() == kStabilityEvent) {
 145     updateStability(theMessage->sender());
 146     return;
 147   }
 148   // creation is added to "update" to avoid recomputation twice: on create and immediately after on update
 149   if (theMessage->eventID() == kCreatedEvent) {
 150     std::shared_ptr<ModelAPI_ObjectUpdatedMessage> aMsg =
 151         std::dynamic_pointer_cast<ModelAPI_ObjectUpdatedMessage>(theMessage);
 152     const std::set<ObjectPtr>& anObjs = aMsg->objects();
 153     std::set<ObjectPtr>::const_iterator anObjIter = anObjs.cbegin();
 154     for(; anObjIter != anObjs.cend(); anObjIter++) {
 155       ModelAPI_EventCreator::get()->sendUpdated(*anObjIter, kUpdatedEvent);
 156     }
 157     return;
 158   }
 159   if (theMessage->eventID() == kUpdatedEvent) {
 160     std::shared_ptr<ModelAPI_ObjectUpdatedMessage> aMsg =
 161         std::dynamic_pointer_cast<ModelAPI_ObjectUpdatedMessage>(theMessage);
 162     const std::set<ObjectPtr>& anObjs = aMsg->objects();
 163     std::set<ObjectPtr>::const_iterator anObjIter = anObjs.cbegin();
 164     bool aSomeModified = false; // check that features not changed: only redisplay is needed
 165     for(; anObjIter != anObjs.cend(); anObjIter++) {
 166       if (!(*anObjIter)->data()->isValid())
 167         continue;
 168       if ((*anObjIter)->groupName() == ModelAPI_ResultParameter::group()) {
 169         myIsParamUpdated = true;
 170       }
 171       // on undo/redo, abort do not update persisten features
 172       bool anUpdateOnlyNotPersistent =
 173         !std::dynamic_pointer_cast<Model_Document>((*anObjIter)->document())->executeFeatures();
 174       FeaturePtr anUpdated = std::dynamic_pointer_cast<ModelAPI_Feature>(*anObjIter);
 175       if (anUpdated.get()) {
 176         if (!anUpdateOnlyNotPersistent || anUpdated->isPersistentResult()) {
 177           addModified(anUpdated, FeaturePtr());
 178           aSomeModified = true;
 179         }
 180       } else { // process the updated result as update of features that refers to this result
 181         const std::set<std::shared_ptr<ModelAPI_Attribute> >& aRefs = (*anObjIter)->data()->refsToMe();
 182         std::set<std::shared_ptr<ModelAPI_Attribute> >::const_iterator aRefIter = aRefs.cbegin();
 183         for(; aRefIter != aRefs.cend(); aRefIter++) {
 184           if (!(*aRefIter)->owner()->data()->isValid())
 185             continue;
 186           FeaturePtr anUpdated = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRefIter)->owner());
 187           if (anUpdated.get() && (!anUpdateOnlyNotPersistent || anUpdated->isPersistentResult())) {
 188             addModified(anUpdated, FeaturePtr());
 189             aSomeModified = true;
 190           }
 191         }
 192       }
 193     }
 194     // this event is for solver update, not here, do not react immediately
 195     if (aSomeModified) {
 196         processFeatures();
 197     }
 198   } else if (theMessage->eventID() == kOpFinishEvent || theMessage->eventID() == kOpAbortEvent ||
 199       theMessage->eventID() == kOpStartEvent) {
 200
 201     if (!(theMessage->eventID() == kOpStartEvent)) {
 202       if (theMessage->eventID() == kOpFinishEvent) {
 203         myIsFinish = true;
 204         // add features that wait for finish as modified
 205         std::set<std::shared_ptr<ModelAPI_Feature> >::iterator aFeature = myProcessOnFinish.begin();
 206         for(; aFeature != myProcessOnFinish.end(); aFeature++)
 207           if ((*aFeature)->data()->isValid()) // there may be already removed wait for features
 208             addModified(*aFeature, FeaturePtr());
 209         myIsFinish = false;
 210       }
 211       myProcessOnFinish.clear();
 212       processFeatures();
 213     }
 214     // remove all macros before clearing all created
 215     std::set<FeaturePtr>::iterator anUpdatedIter = myWaitForFinish.begin();
 216     while(anUpdatedIter != myWaitForFinish.end()) {
 217       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(*anUpdatedIter);
 218       if (aFeature.get()) {
 219         // remove macro on finish
 220         if (aFeature->isMacro()) {
 221           aFeature->document()->removeFeature(aFeature);
 222           myWaitForFinish.erase(aFeature);
 223         }
 224         // to avoid the map update problems on "remove"
 225         if (myWaitForFinish.find(aFeature) == myWaitForFinish.end()) {
 226           anUpdatedIter = myWaitForFinish.begin();
 227         } else {
 228           anUpdatedIter++;
 229         }
 230       } else {
 231         anUpdatedIter++;
 232       }
 233     }
 234     // in the end of transaction everything is updated, so clear the old objects
 235     myIsParamUpdated = false;
 236     myWaitForFinish.clear();
 237   }
 238 }
 239
 240 void Model_Update::processFeatures()
 241 {
 242   if (!myIsProcessed) { // perform update of everything if it is not performed right now
 243     myIsProcessed = true;
 244     #ifdef DEB_UPDATE
 245       std::cout<<"****** Start processing"<<std::endl;
 246     #endif
 247
 248     while(!myModified.empty()) {
 249       processFeature(myModified.begin()->first);
 250     }
 251     myIsProcessed = false;
 252
 253     // flush updates just before "myModification" increment: to distinguish
 254     // updates by "execute" produced by this updater and other updates, coming outside,
 255     // which are really important for "processEvent" of this updater
 256     static Events_Loop* aLoop = Events_Loop::loop();
 257     static const Events_ID kUpdatedEvent = aLoop->eventByName(EVENT_OBJECT_UPDATED);
 258     aLoop->flush(kUpdatedEvent);
 259
 260     // flush to update display
 261     static Events_ID EVENT_DISP = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 262     aLoop->flush(EVENT_DISP);
 263     #ifdef DEB_UPDATE
 264       std::cout<<"****** End processing"<<std::endl;
 265     #endif
 266   }
 267 }
 268
 269 bool Model_Update::processFeature(FeaturePtr theFeature)
 270 {
 271   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 272
 273   if (!theFeature->data()->isValid()) { // deleted feature, just remove from all containers
 274     if (myModified.find(theFeature) != myModified.end())
 275       myModified.erase(theFeature);
 276     return false;
 277   }
 278
 279   // check this feature is not yet checked or processed
 280   bool aIsModified = myModified.find(theFeature) != myModified.end();
 281   if (!aIsModified && myIsFinish) { // get info about the modification for features without preview
 282     if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated) {
 283       aIsModified = true;
 284       std::set<std::shared_ptr<ModelAPI_Feature> > aNewSet;
 285       aNewSet.insert(theFeature); // contains itself, so, we don't know which was the reason and the reason is any
 286       myModified[theFeature] = aNewSet;
 287     }
 288   }
 289
 290 #ifdef DEB_UPDATE
 291     std::cout<<"* Process feature "<<theFeature->name()<<std::endl;
 292 #endif
 293
 294   // update the sketch plane before the sketch sub-elements are recomputed
 295   // (otherwise sketch will update plane, modify subs, after executed, but with old subs edges)
 296   if (aIsModified && theFeature->getKind() == "Sketch") {
 297 #ifdef DEB_UPDATE
 298     std::cout<<"****** Update sketch args "<<theFeature->name()<<std::endl;
 299 #endif
 300     AttributeSelectionPtr anExtSel = theFeature->selection("External");
 301     if (anExtSel.get()) {
 302       ResultPtr aContext = anExtSel->context();
 303       if (aContext.get() && aContext->document().get()) {
 304         FeaturePtr anExtBase = aContext->document()->feature(aContext);
 305         if (anExtBase.get()) {
 306           processFeature(anExtBase);
 307         }
 308       }
 309     }
 310     updateArguments(theFeature);
 311   }
 312
 313   if (!aIsModified) { // no modification is needed
 314     return false;
 315   }
 316
 317   // check all features this feature depended on (recursive call of updateFeature)
 318   std::set<std::shared_ptr<ModelAPI_Feature> >& aReasons = myModified[theFeature];
 319   if (aReasons.find(theFeature) == aReasons.end()) {
 320     std::set<std::shared_ptr<ModelAPI_Feature> >::iterator aReasonIter = aReasons.begin();
 321     for(; aReasonIter != aReasons.end(); aReasonIter++) {
 322       if (*aReasonIter != theFeature && processFeature(*aReasonIter)) {
 323         aIsModified = true;
 324       }
 325     }
 326   } else { // check all features this feature depended on because here which one was modified is unknown
 327     std::list<std::pair<std::string, std::list<std::shared_ptr<ModelAPI_Object> > > > aDeps;
 328     theFeature->data()->referencesToObjects(aDeps);
 329     std::list<std::pair<std::string, std::list<std::shared_ptr<ModelAPI_Object> > > >::iterator
 330       anAttrsIter = aDeps.begin();
 331     for(; anAttrsIter != aDeps.end(); anAttrsIter++) {
 332       std::list<std::shared_ptr<ModelAPI_Object> >::iterator aDepIter = anAttrsIter->second.begin();
 333       for(; aDepIter != anAttrsIter->second.end(); aDepIter++) {
 334         FeaturePtr aDepFeat = std::dynamic_pointer_cast<ModelAPI_Feature>(*aDepIter);
 335         if (!aDepFeat.get()) { // so, it depends on the result and process the feature owner of it
 336           ResultPtr aDepRes = std::dynamic_pointer_cast<ModelAPI_Result>(*aDepIter);
 337           if (aDepRes.get()) {
 338             aDepFeat = (*aDepIter)->document()->feature(aDepRes);
 339           }
 340         }
 341         if (aDepFeat.get()) {
 342           if (processFeature(aDepFeat))
 343             aIsModified = true;
 344         }
 345       }
 346     }
 347     if (theFeature->getKind() == "Part") { // part is not depended on its subs directly, but subs must be iterated anyway
 348       CompositeFeaturePtr aPart = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 349       int aNum = aPart->numberOfSubs();
 350       for(int a = 0; a < aNum; a++) {
 351         FeaturePtr aSub = aPart->subFeature(a);
 352         if (aSub.get()) {
 353           if (processFeature(aSub))
 354             aIsModified = true;
 355         }
 356       }
 357     }
 358   }
 359
 360   // do not execute the composite that contains the current
 361   bool isPostponedMain = false;
 362   CompositeFeaturePtr aCompos = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 363   if (theFeature->getKind() == "ExtrusionSketch" && aCompos.get()) {
 364     CompositeFeaturePtr aCurrentOwner =
 365       ModelAPI_Tools::compositeOwner(theFeature->document()->currentFeature(false));
 366     isPostponedMain = aCurrentOwner.get() && aCompos->isSub(aCurrentOwner);
 367   }
 368
 369   #ifdef DEB_UPDATE
 370     std::cout<<"Update args "<<theFeature->name()<<std::endl;
 371   #endif
 372   // Update selection and parameters attributes first, before sub-features analysis (sketch plane).
 373   updateArguments(theFeature);
 374
 375   // add this feature to the processed right now to be able remove it from this list on
 376   // update signal during this feature execution
 377   myModified.erase(theFeature);
 378   if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated)
 379     theFeature->data()->execState(ModelAPI_StateDone);
 380
 381   // this checking must be after the composite feature sub-elements processing:
 382   // composite feature status may depend on it's subelements
 383   if (theFeature->data()->execState() == ModelAPI_StateInvalidArgument) {
 384     theFeature->eraseResults();
 385     redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 386     return true; // so, feature is modified (results are erased)
 387   }
 388
 389   // On abort, undo or redo execute is not needed: results in document are updated automatically
 390   // But redisplay is needed: results are updated, must be also updated in the viewer.
 391   if (!std::dynamic_pointer_cast<Model_Document>(theFeature->document())->executeFeatures()) {
 392     if (!theFeature->isPersistentResult()) { // not persistent must be re-executed on abort, etc.
 393       ModelAPI_ExecState aState = theFeature->data()->execState();
 394       if (aFactory->validate(theFeature)) {
 395         executeFeature(theFeature);
 396       } else {
 397         theFeature->eraseResults();
 398         redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 399       }
 400     } else {
 401       redisplayWithResults(theFeature, ModelAPI_StateNothing);
 402       if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated) { // it is done (in the tree)
 403         theFeature->data()->execState(ModelAPI_StateDone);
 404       }
 405     }
 406   } else {
 407     // execute feature if it must be updated
 408     ModelAPI_ExecState aState = theFeature->data()->execState();
 409     if (aFactory->validate(theFeature)) {
 410       if (!isPostponedMain) {
 411         executeFeature(theFeature);
 412       }
 413     } else {
 414       #ifdef DEB_UPDATE
 415         std::cout<<"Feature is not valid, erase results "<<theFeature->name()<<std::endl;
 416       #endif
 417       theFeature->eraseResults();
 418       redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 419     }
 420   }
 421   return true;
 422 }
 423
 424 void Model_Update::redisplayWithResults(FeaturePtr theFeature, const ModelAPI_ExecState theState)
 425 {
 426   // make updated and redisplay all results
 427   static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 428
 429   std::list<ResultPtr> allResults;
 430   ModelAPI_Tools::allResults(theFeature, allResults);
 431   std::list<ResultPtr>::iterator aRIter = allResults.begin();
 432   for (; aRIter != allResults.cend(); aRIter++) {
 433     std::shared_ptr<ModelAPI_Result> aRes = *aRIter;
 434     if (!aRes->isDisabled()) {// update state only for enabled results (Placement Result Part may make the original Part Result as invalid)
 435       aRes->data()->execState(theState);
 436     }
 437     if (theFeature->data()->updateID() > aRes->data()->updateID()) {
 438       aRes->data()->setUpdateID(theFeature->data()->updateID());
 439     }
 440     ModelAPI_EventCreator::get()->sendUpdated(aRes, EVENT_DISP);
 441   }
 442   // to redisplay "presentable" feature (for ex. distance constraint)
 443   ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
 444   theFeature->data()->execState(theState);
 445 }
 446
 447 /// Updates the state by the referenced object: if something bad with it, set state for this one
 448 ModelAPI_ExecState stateByReference(ObjectPtr theTarget, const ModelAPI_ExecState theCurrent)
 449 {
 450   if (theTarget) {
 451     ModelAPI_ExecState aRefState = theTarget->data()->execState();
 452     if (aRefState == ModelAPI_StateMustBeUpdated) {
 453       if (theCurrent == ModelAPI_StateDone)
 454         return ModelAPI_StateMustBeUpdated;
 455     } else if (aRefState != ModelAPI_StateDone) {
 456       return ModelAPI_StateInvalidArgument;
 457     }
 458   }
 459   return theCurrent;
 460 }
 461
 462 void Model_Update::updateArguments(FeaturePtr theFeature) {
 463   // perform this method also for disabled features: to make "not done" state for
 464   // features referenced to the active and modified features
 465
 466   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 467
 468   ModelAPI_ExecState aState = theFeature->data()->execState();
 469   if (aState == ModelAPI_StateExecFailed) { // try again failed feature: issue 577
 470     aState = ModelAPI_StateMustBeUpdated;
 471   }
 472   if (aState == ModelAPI_StateInvalidArgument) // a chance to be corrected
 473     aState = ModelAPI_StateMustBeUpdated;
 474   // check the parameters state
 475   // Integer
 476   {
 477     std::list<AttributePtr> anAttrinbutes =
 478       theFeature->data()->attributes(ModelAPI_AttributeInteger::typeId());
 479     std::list<AttributePtr>::iterator anIter = anAttrinbutes.begin();
 480     for(; anIter != anAttrinbutes.end(); anIter++) {
 481       AttributeIntegerPtr anAttribute =
 482         std::dynamic_pointer_cast<ModelAPI_AttributeInteger>(*anIter);
 483       if (anAttribute.get() && !anAttribute->text().empty()) {
 484         if (myIsParamUpdated) {
 485           ModelAPI_AttributeEvalMessage::send(anAttribute, this);
 486         }
 487         if (anAttribute->expressionInvalid()) {
 488           aState = ModelAPI_StateInvalidArgument;
 489         }
 490       }
 491     }
 492   }
 493   // Double
 494   {
 495     std::list<AttributePtr> aDoubles =
 496       theFeature->data()->attributes(ModelAPI_AttributeDouble::typeId());
 497     std::list<AttributePtr>::iterator aDoubleIter = aDoubles.begin();
 498     for(; aDoubleIter != aDoubles.end(); aDoubleIter++) {
 499       AttributeDoublePtr aDouble =
 500         std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(*aDoubleIter);
 501       if (aDouble.get() && !aDouble->text().empty()) {
 502         if (myIsParamUpdated) {
 503           ModelAPI_AttributeEvalMessage::send(aDouble, this);
 504         }
 505         if (aDouble->expressionInvalid()) {
 506           aState = ModelAPI_StateInvalidArgument;
 507         }
 508       }
 509     }
 510   }
 511   // Point
 512   {
 513     std::list<AttributePtr> anAttributes =
 514       theFeature->data()->attributes(GeomDataAPI_Point::typeId());
 515     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 516     for(; anIter != anAttributes.end(); anIter++) {
 517       AttributePointPtr aPointAttribute =
 518         std::dynamic_pointer_cast<GeomDataAPI_Point>(*anIter);
 519       if (aPointAttribute.get()) {
 520         if (myIsParamUpdated) {
 521           ModelAPI_AttributeEvalMessage::send(aPointAttribute, this);
 522         }
 523         if ((!aPointAttribute->textX().empty() && aPointAttribute->expressionInvalid(0)) ||
 524           (!aPointAttribute->textY().empty() && aPointAttribute->expressionInvalid(1)) ||
 525           (!aPointAttribute->textZ().empty() && aPointAttribute->expressionInvalid(2)))
 526           aState = ModelAPI_StateInvalidArgument;
 527       }
 528     }
 529   }
 530   // Point2D
 531   {
 532     std::list<AttributePtr> anAttributes =
 533       theFeature->data()->attributes(GeomDataAPI_Point2D::typeId());
 534     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 535     for(; anIter != anAttributes.end(); anIter++) {
 536       AttributePoint2DPtr aPoint2DAttribute =
 537         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(*anIter);
 538       if (aPoint2DAttribute.get()) {
 539         if (myIsParamUpdated) {
 540           ModelAPI_AttributeEvalMessage::send(aPoint2DAttribute, this);
 541         }
 542         if ((!aPoint2DAttribute->textX().empty() && aPoint2DAttribute->expressionInvalid(0)) ||
 543           (!aPoint2DAttribute->textY().empty() && aPoint2DAttribute->expressionInvalid(1)))
 544           aState = ModelAPI_StateInvalidArgument;
 545       }
 546     }
 547   }
 548   // update the selection attributes if any
 549   list<AttributePtr> aRefs =
 550     theFeature->data()->attributes(ModelAPI_AttributeSelection::typeId());
 551   list<AttributePtr>::iterator aRefsIter = aRefs.begin();
 552   for (; aRefsIter != aRefs.end(); aRefsIter++) {
 553     std::shared_ptr<ModelAPI_AttributeSelection> aSel =
 554       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(*aRefsIter);
 555     ObjectPtr aContext = aSel->context();
 556     // update argument only if the referenced object is ready to use
 557     if (aContext.get() && !aContext->isDisabled() && isReason(theFeature, aContext)) {
 558       if (!aSel->update()) { // this must be done on execution since it may be long operation
 559         bool isObligatory = !aFactory->isNotObligatory(
 560           theFeature->getKind(), theFeature->data()->id(aSel)) &&
 561           aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 562         if (isObligatory)
 563           aState = ModelAPI_StateInvalidArgument;
 564       }
 565     }
 566   }
 567   // update the selection list attributes if any
 568   aRefs = theFeature->data()->attributes(ModelAPI_AttributeSelectionList::typeId());
 569   for (aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
 570     std::shared_ptr<ModelAPI_AttributeSelectionList> aSel =
 571       std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(*aRefsIter);
 572     for(int a = aSel->size() - 1; a >= 0; a--) {
 573       std::shared_ptr<ModelAPI_AttributeSelection> aSelAttr =
 574         std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(aSel->value(a));
 575       if (aSelAttr) {
 576         ObjectPtr aContext = aSelAttr->context();
 577         // update argument only if the referenced object is ready to use
 578         if (aContext.get() && !aContext->isDisabled() && isReason(theFeature, aContext)) {
 579           if (!aSelAttr->update()) {
 580             bool isObligatory = !aFactory->isNotObligatory(
 581               theFeature->getKind(), theFeature->data()->id(aSel)) &&
 582               aFactory->isCase(theFeature, theFeature->data()->id(aSel));
 583             if (isObligatory)
 584               aState = ModelAPI_StateInvalidArgument;
 585           }
 586         }
 587       }
 588     }
 589   }
 590
 591   if (aState != ModelAPI_StateDone)
 592     theFeature->data()->execState(aState);
 593 }
 594
 595 bool Model_Update::isReason(std::shared_ptr<ModelAPI_Feature>& theFeature,
 596      std::shared_ptr<ModelAPI_Object> theReason)
 597 {
 598   std::map<std::shared_ptr<ModelAPI_Feature>, std::set<std::shared_ptr<ModelAPI_Feature> > >
 599     ::iterator aReasonsIt = myModified.find(theFeature);
 600   if (aReasonsIt->second.find(theFeature) != aReasonsIt->second.end())
 601     return true; // any is reason if it contains itself
 602   FeaturePtr aReasFeat = std::dynamic_pointer_cast<ModelAPI_Feature>(theReason);
 603   if (!aReasFeat.get()) { // try to get feature of this result
 604     ResultPtr aReasRes = std::dynamic_pointer_cast<ModelAPI_Result>(theReason);
 605     if (aReasRes.get())
 606       aReasFeat = theReason->document()->feature(aReasRes);
 607   }
 608   return aReasonsIt->second.find(aReasFeat) != aReasonsIt->second.end();
 609
 610 }
 611
 612 void Model_Update::executeFeature(FeaturePtr theFeature)
 613 {
 614 #ifdef DEB_UPDATE
 615   std::cout<<"Execute Feature "<<theFeature->name()<<std::endl;
 616 #endif
 617   // execute in try-catch to avoid internal problems of the feature
 618   ModelAPI_ExecState aState = ModelAPI_StateDone;
 619   theFeature->data()->execState(ModelAPI_StateDone);
 620   try {
 621     theFeature->execute();
 622     if (theFeature->data()->execState() != ModelAPI_StateDone) {
 623       aState = ModelAPI_StateExecFailed;
 624     } else {
 625       aState = ModelAPI_StateDone;
 626     }
 627   } catch(...) {
 628     aState = ModelAPI_StateExecFailed;
 629     Events_Error::send(
 630       "Feature " + theFeature->getKind() + " has failed during the execution");
 631   }
 632   // The macro feature has to be deleted in any case even its execution is failed
 633   myWaitForFinish.insert(theFeature);
 634   if (aState != ModelAPI_StateDone) {
 635     theFeature->eraseResults();
 636   }
 637   theFeature->data()->setUpdateID(ModelAPI_Session::get()->transactionID());
 638   redisplayWithResults(theFeature, aState);
 639 }
 640
 641 void Model_Update::updateStability(void* theSender)
 642 {
 643   if (theSender) {
 644     bool added = false; // object may be was crated
 645     ModelAPI_Object* aSender = static_cast<ModelAPI_Object*>(theSender);
 646     if (aSender && aSender->document()) {
 647       FeaturePtr aFeatureSender =
 648         std::dynamic_pointer_cast<ModelAPI_Feature>(aSender->data()->owner());
 649       if (aFeatureSender.get()) {
 650         Model_Objects* aDocObjects =
 651           std::dynamic_pointer_cast<Model_Document>(aSender->document())->objects();
 652         if (aDocObjects) {
 653           //aDocObjects->synchronizeBackRefs();
 654           // remove or add all concealment refs from this feature
 655           std::list<std::pair<std::string, std::list<ObjectPtr> > > aRefs;
 656           aSender->data()->referencesToObjects(aRefs);
 657           std::list<std::pair<std::string, std::list<ObjectPtr> > >::iterator aRefIt = aRefs.begin();
 658           for(; aRefIt != aRefs.end(); aRefIt++) {
 659             std::list<ObjectPtr>& aRefFeaturesList = aRefIt->second;
 660             std::list<ObjectPtr>::iterator aReferenced = aRefFeaturesList.begin();
 661             for(; aReferenced != aRefFeaturesList.end(); aReferenced++) {
 662                // stability is only on results: feature to feature reference mean nested
 663               // features, that will remove nesting references
 664               if (aReferenced->get() && (*aReferenced)->data()->isValid() &&
 665                 (*aReferenced)->groupName() != ModelAPI_Feature::group()) {
 666                 std::shared_ptr<Model_Data> aData =
 667                   std::dynamic_pointer_cast<Model_Data>((*aReferenced)->data());
 668                 if (aFeatureSender->isStable()) {
 669                   aData->addBackReference(aFeatureSender, aRefIt->first);
 670                 } else {
 671                   aData->removeBackReference(aFeatureSender, aRefIt->first);
 672                   added = true; // remove of concealment may be caused creation of some result
 673                 }
 674               }
 675             }
 676           }
 677         }
 678       }
 679     }
 680     if (added) {
 681       static Events_Loop* aLoop = Events_Loop::loop();
 682       static Events_ID kEventCreated = aLoop->eventByName(EVENT_OBJECT_CREATED);
 683       aLoop->flush(kEventCreated);
 684     }
 685   }
 686 }
 687