src/XGUI/XGUI_OperationMgr.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
   2
   3 // File:        XGUI_OperationMgr.cpp
   4 // Created:     20 Apr 2014
   5 // Author:      Natalia ERMOLAEVA
   6
   7 #include "XGUI_OperationMgr.h"
   8 #include "XGUI_ModuleConnector.h"
   9 #include "XGUI_Workshop.h"
  10 #include "XGUI_ErrorMgr.h"
  11 #include "XGUI_Tools.h"
  12 #include "XGUI_ObjectsBrowser.h"
  13
  14 #include <ModuleBase_IPropertyPanel.h>
  15 #include <ModuleBase_ModelWidget.h>
  16 #include "ModuleBase_Operation.h"
  17 #include "ModuleBase_IWorkshop.h"
  18 #include "ModuleBase_IModule.h"
  19 #include <ModuleBase_IViewer.h>
  20 #include "ModuleBase_OperationDescription.h"
  21 #include "ModuleBase_OperationFeature.h"
  22 #include "ModuleBase_Tools.h"
  23
  24 #include "ModelAPI_CompositeFeature.h"
  25 #include "ModelAPI_Session.h"
  26
  27 #include <XGUI_PropertyPanel.h>
  28 #include <QToolButton>
  29
  30 #include <QMessageBox>
  31 #include <QApplication>
  32 #include <QKeyEvent>
  33
  34 //#define DEBUG_CURRENT_FEATURE
  35
  36 /// Processes "Delete" key event of application. This key is used by several application actions.
  37 /// There is a logical order of the actions processing. So the key can not be set for actions
  38 /// as a shortcut. The class listens the key event and call operation manager processor.
  39 class XGUI_ShortCutListener : public QObject
  40 {
  41 public:
  42   /// Constructor
  43   /// \param theParent the parent to be deleted when the parent is deleted
  44   /// \param theOperationMgr the class to perform deletion
  45   XGUI_ShortCutListener(QObject* theParent, XGUI_OperationMgr* theOperationMgr)
  46     : QObject(theParent), myOperationMgr(theOperationMgr)
  47   {
  48     qApp->installEventFilter(this);
  49   }
  50   ~XGUI_ShortCutListener() {}
  51
  52   /// Switch on short cut listener
  53   void setActive(const bool theIsActive) { myIsActive = theIsActive; }
  54
  55   /// Redefinition of virtual function to process Delete key release
  56   virtual bool eventFilter(QObject *theObject, QEvent *theEvent)
  57   {
  58     bool isAccepted = false;
  59     if (myIsActive && theEvent->type() == QEvent::KeyRelease) {
  60       QKeyEvent* aKeyEvent = dynamic_cast<QKeyEvent*>(theEvent);
  61       if(aKeyEvent) {
  62         switch (aKeyEvent->key()) {
  63           case Qt::Key_Delete: {
  64             isAccepted = myOperationMgr->onProcessDelete(theObject);
  65           }
  66         }
  67       }
  68     }
  69     if (!isAccepted)
  70       isAccepted = QObject::eventFilter(theObject, theEvent);
  71     return isAccepted;
  72   }
  73
  74 private:
  75   XGUI_OperationMgr* myOperationMgr; /// processor for key event
  76   bool myIsActive; /// boolean state whether the event filter perform own signal processing
  77 };
  78
  79 XGUI_OperationMgr::XGUI_OperationMgr(QObject* theParent,
  80                                      ModuleBase_IWorkshop* theWorkshop)
  81 : QObject(theParent), myWorkshop(theWorkshop)
  82 {
  83   /// we need to install filter to the application in order to react to 'Delete' key button
  84   /// this key can not be a short cut for a corresponded action because we need to set
  85   /// the actions priority
  86   myShortCutListener = new XGUI_ShortCutListener(theParent, this);
  87 }
  88
  89 XGUI_OperationMgr::~XGUI_OperationMgr()
  90 {
  91 }
  92
  93 void XGUI_OperationMgr::activate()
  94 {
  95   myShortCutListener->setActive(true);
  96 }
  97
  98 void XGUI_OperationMgr::deactivate()
  99 {
 100   myShortCutListener->setActive(false);
 101 }
 102
 103 ModuleBase_Operation* XGUI_OperationMgr::currentOperation() const
 104 {
 105   return myOperations.count() > 0 ? myOperations.last() : 0;
 106 }
 107
 108 bool XGUI_OperationMgr::isCurrentOperation(ModuleBase_Operation* theOperation)
 109 {
 110   if(!hasOperation())
 111     return false;
 112   return currentOperation() == theOperation;
 113 }
 114
 115 bool XGUI_OperationMgr::hasOperation() const
 116 {
 117   return !myOperations.isEmpty() && (myOperations.last() != NULL);
 118 }
 119
 120 bool XGUI_OperationMgr::hasOperation(const QString& theId) const
 121 {
 122   foreach(ModuleBase_Operation* aOp, myOperations) {
 123     if (aOp->id() == theId)
 124       return true;
 125   }
 126   return false;
 127 }
 128
 129 ModuleBase_Operation* XGUI_OperationMgr::findOperation(const QString& theId) const
 130 {
 131   foreach(ModuleBase_Operation* aOp, myOperations) {
 132     if (aOp->id() == theId)
 133       return aOp;
 134   }
 135   return 0;
 136 }
 137
 138
 139 int XGUI_OperationMgr::operationsCount() const
 140 {
 141   return myOperations.count();
 142 }
 143
 144 QStringList XGUI_OperationMgr::operationList() const
 145 {
 146   QStringList result;
 147   foreach(ModuleBase_Operation* eachOperation, myOperations) {
 148     ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>(eachOperation);
 149     if (aFOperation) {
 150       FeaturePtr aFeature = aFOperation->feature();
 151       if(aFeature) {
 152         result << QString::fromStdString(aFeature->getKind());
 153       }
 154     }
 155   }
 156   return result;
 157 }
 158
 159 ModuleBase_Operation* XGUI_OperationMgr::previousOperation(ModuleBase_Operation* theOperation) const
 160 {
 161   int idx = myOperations.lastIndexOf(theOperation);
 162   if(idx == -1 || idx == 0) {
 163     return NULL;
 164   }
 165   return myOperations.at(idx - 1);
 166 }
 167
 168 bool XGUI_OperationMgr::eventFilter(QObject *theObject, QEvent *theEvent)
 169 {
 170   bool isAccepted = false;
 171   if (theEvent->type() == QEvent::KeyRelease) {
 172     QKeyEvent* aKeyEvent = dynamic_cast<QKeyEvent*>(theEvent);
 173     if(aKeyEvent)
 174       isAccepted = onKeyReleased(theObject, aKeyEvent);
 175   }
 176   if (!isAccepted)
 177     isAccepted = QObject::eventFilter(theObject, theEvent);
 178
 179   return isAccepted;
 180 }
 181
 182 bool XGUI_OperationMgr::startOperation(ModuleBase_Operation* theOperation)
 183 {
 184   if (hasOperation())
 185     currentOperation()->postpone();
 186   myOperations.append(theOperation);
 187
 188   connect(theOperation, SIGNAL(beforeStarted()), SLOT(onBeforeOperationStarted()));
 189   connect(theOperation, SIGNAL(beforeAborted()), SLOT(onBeforeOperationAborted()));
 190   connect(theOperation, SIGNAL(beforeCommitted()), SLOT(onBeforeOperationCommitted()));
 191
 192   connect(theOperation, SIGNAL(started()), SLOT(onOperationStarted()));
 193   connect(theOperation, SIGNAL(aborted()), SLOT(onOperationAborted()));
 194   connect(theOperation, SIGNAL(committed()), SLOT(onOperationCommitted()));
 195
 196   connect(theOperation, SIGNAL(stopped()), SLOT(onOperationStopped()));
 197   connect(theOperation, SIGNAL(resumed()), SLOT(onOperationResumed()));
 198
 199   bool isStarted = theOperation->start();
 200   if (isStarted)
 201     onValidateOperation();
 202   return isStarted;
 203 }
 204
 205 bool XGUI_OperationMgr::abortAllOperations()
 206 {
 207   bool aResult = true;
 208   if(!hasOperation())
 209     return aResult;
 210
 211   if (operationsCount() == 1) {
 212     ModuleBase_Operation* aCurrentOperation = currentOperation();
 213     if (canStopOperation(aCurrentOperation)) {
 214       abortOperation(aCurrentOperation);
 215     }
 216     else
 217       aResult = false;
 218   }
 219   else {
 220     aResult = QMessageBox::question(qApp->activeWindow(),
 221                                     tr("Abort operation"),
 222                                     tr("All active operations will be aborted."),
 223                                     QMessageBox::Ok | QMessageBox::Cancel,
 224                                     QMessageBox::Cancel) == QMessageBox::Ok;
 225     while(aResult && hasOperation()) {
 226       abortOperation(currentOperation());
 227     }
 228   }
 229   return aResult;
 230 }
 231
 232 bool XGUI_OperationMgr::commitAllOperations()
 233 {
 234   bool isCompositeCommitted = false;
 235   while (hasOperation()) {
 236     ModuleBase_Operation* anOperation = currentOperation();
 237     if (XGUI_Tools::workshop(myWorkshop)->errorMgr()->isApplyEnabled()) {
 238       onCommitOperation();
 239     } else {
 240       abortOperation(anOperation);
 241     }
 242     ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>
 243                                                                             (anOperation);
 244     if (aFOperation) {
 245       FeaturePtr aFeature = aFOperation->feature();
 246       CompositeFeaturePtr aComposite =
 247           std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(aFeature);
 248       isCompositeCommitted = aComposite.get();
 249       if (isCompositeCommitted)
 250         break;
 251     }
 252   }
 253   return true;
 254 }
 255
 256 void XGUI_OperationMgr::onValidateOperation()
 257 {
 258   if (!hasOperation())
 259     return;
 260   ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>
 261                                                                           (currentOperation());
 262   if(aFOperation && aFOperation->feature().get())
 263     XGUI_Tools::workshop(myWorkshop)->errorMgr()->updateActions(aFOperation->feature());
 264 }
 265
 266 void XGUI_OperationMgr::updateApplyOfOperations(ModuleBase_Operation* theOperation)
 267 {
 268   XGUI_ErrorMgr* anErrorMgr = XGUI_Tools::workshop(myWorkshop)->errorMgr();
 269   if (theOperation) {
 270     ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>(theOperation);
 271     if (aFOperation)
 272       anErrorMgr->updateAcceptAllAction(aFOperation->feature());
 273   }
 274   else {
 275     foreach(ModuleBase_Operation* anOperation, myOperations) {
 276       if (anOperation)
 277         updateApplyOfOperations(anOperation);
 278     }
 279   }
 280 }
 281
 282 bool XGUI_OperationMgr::canStopOperation(ModuleBase_Operation* theOperation)
 283 {
 284   //in case of nested (sketch) operation no confirmation needed
 285   if (isGrantedOperation(theOperation->id()))
 286     return true;
 287   if (theOperation && theOperation->isModified()) {
 288     QString aMessage = tr("%1 operation will be aborted.").arg(theOperation->id());
 289     int anAnswer = QMessageBox::question(qApp->activeWindow(),
 290                                          tr("Abort operation"),
 291                                          aMessage,
 292                                          QMessageBox::Ok | QMessageBox::Cancel,
 293                                          QMessageBox::Cancel);
 294     return anAnswer == QMessageBox::Ok;
 295   }
 296   return true;
 297 }
 298
 299 bool XGUI_OperationMgr::commitOperation()
 300 {
 301   if (hasOperation() && currentOperation()->isValid()) {
 302     onCommitOperation();
 303     return true;
 304   }
 305   return false;
 306 }
 307
 308 void XGUI_OperationMgr::resumeOperation(ModuleBase_Operation* theOperation)
 309 {
 310   theOperation->resume();
 311 }
 312
 313 bool XGUI_OperationMgr::isGrantedOperation(const QString& theId)
 314 {
 315   bool isGranted = false;
 316
 317   QListIterator<ModuleBase_Operation*> anIt(myOperations);
 318   anIt.toBack();
 319   ModuleBase_Operation* aPreviousOperation = 0;
 320   while (anIt.hasPrevious() && !isGranted) {
 321     ModuleBase_Operation* anOp = anIt.previous();
 322     if (anOp)
 323       isGranted = anOp->isGranted(theId);
 324   }
 325   return isGranted;
 326 }
 327
 328 void XGUI_OperationMgr::setCurrentFeature(const FeaturePtr& theFeature)
 329 {
 330   SessionPtr aMgr = ModelAPI_Session::get();
 331   DocumentPtr aDoc = aMgr->activeDocument();
 332   bool aIsOp = aMgr->isOperation();
 333   if (!aIsOp)
 334     aMgr->startOperation();
 335   aDoc->setCurrentFeature(theFeature, false);
 336   if (!aIsOp)
 337     aMgr->finishOperation();
 338 }
 339
 340 bool XGUI_OperationMgr::canStartOperation(const QString& theId)
 341 {
 342   bool aCanStart = true;
 343   ModuleBase_Operation* aCurrentOp = currentOperation();
 344   if (aCurrentOp) {
 345     bool aGranted = aCurrentOp->isGranted(theId);
 346     // the started operation is granted for the current one,
 347     // e.g. current - Sketch, started - Line
 348     if (aGranted) {
 349       aCanStart = true;
 350     }
 351     else {
 352       if (!isGrantedOperation(theId)) {
 353         // the operation is not granted in the current list of operations
 354         // e.g. Edit Parameter when Sketch, Line in Sketch is active.
 355         aCanStart = abortAllOperations();
 356       }
 357       else if (canStopOperation(aCurrentOp)) {
 358         // the started operation is granted in the parrent operation,
 359         // e.g. current - Line in Sketch, started Circle
 360         if (XGUI_Tools::workshop(myWorkshop)->errorMgr()->isApplyEnabled() && aCurrentOp->isModified())
 361           aCurrentOp->commit();
 362         else
 363           abortOperation(aCurrentOp);
 364       } else {
 365         aCanStart = false;
 366       }
 367     }
 368   }
 369   return aCanStart;
 370 }
 371
 372 void XGUI_OperationMgr::abortOperation(ModuleBase_Operation* theOperation)
 373 {
 374   ModuleBase_Operation* aCurrentOperation = currentOperation();
 375   if (theOperation == aCurrentOperation)
 376     theOperation->abort();
 377   else {
 378     // it is possible to trigger upper operation(e.g. sketch, current is sketch line)
 379     // all operation from the current to triggered should also be aborted
 380     // operations over the parameter one are not aborted(e.g. extrusion cut, sketch abort)
 381     while(hasOperation()) {
 382       ModuleBase_Operation* aCurrentOperation = currentOperation();
 383       aCurrentOperation->abort();
 384       if(theOperation == aCurrentOperation)
 385         break;
 386     }
 387   }
 388 }
 389
 390 void XGUI_OperationMgr::onCommitOperation()
 391 {
 392   ModuleBase_Operation* anOperation = currentOperation();
 393   if (anOperation)
 394     anOperation->commit();
 395 }
 396
 397 void XGUI_OperationMgr::onAbortOperation()
 398 {
 399   ModuleBase_Operation* aCurrentOperation = currentOperation();
 400   if (aCurrentOperation && canStopOperation(aCurrentOperation)) {
 401     abortOperation(aCurrentOperation);
 402   }
 403 }
 404
 405 void XGUI_OperationMgr::onBeforeOperationStarted()
 406 {
 407   ModuleBase_Operation* aCurrentOperation = dynamic_cast<ModuleBase_Operation*>(sender());
 408   if (!aCurrentOperation)
 409     return;
 410
 411   /// Set current feature and remeber old current feature
 412   ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>(aCurrentOperation);
 413   if (aFOperation) {
 414     SessionPtr aMgr = ModelAPI_Session::get();
 415     DocumentPtr aDoc = aMgr->activeDocument();
 416     // the parameter of current feature should be false, we should use all feature, not only visible
 417     // in order to correctly save the previous feature of the nested operation, where the
 418     // features can be not visible in the tree. The problem case is Edit sketch entitity(line)
 419     // in the Sketch, created in ExtrusionCut operation. The entity disappears by commit.
 420     // When sketch entity operation started, the sketch should be cashed here as the current.
 421     // Otherwise(the flag is true), the ExtrusionCut is cashed, when commit happens, the sketch
 422     // is disabled, sketch entity is disabled as extrusion cut is created earliest then sketch.
 423     // As a result the sketch disappears from the viewer. However after commit it is displayed back.
 424     aFOperation->setPreviousCurrentFeature(aDoc->currentFeature(false));
 425
 426 #ifdef DEBUG_CURRENT_FEATURE
 427     FeaturePtr aFeature = aFOperation->feature();
 428     QString aKind = aFeature ? aFeature->getKind().c_str() : "";
 429     qDebug(QString("onBeforeOperationStarted(), edit operation = %1, feature = %2")
 430             .arg(aFOperation->isEditOperation())
 431             .arg(ModuleBase_Tools::objectInfo(aFeature)).toStdString().c_str());
 432
 433     qDebug(QString("\tdocument->currentFeature(false) = %1").arg(
 434             ModuleBase_Tools::objectInfo(ModelAPI_Session::get()->activeDocument()->currentFeature(false))).toStdString().c_str());
 435 #endif
 436
 437     if (aFOperation->isEditOperation()) // it should be performed by the feature edit only
 438       // in create operation, the current feature is changed by addFeature()
 439       aDoc->setCurrentFeature(aFOperation->feature(), false);
 440
 441 #ifdef DEBUG_CURRENT_FEATURE
 442     qDebug("\tdocument->setCurrentFeature");
 443     qDebug(QString("\tdocument->currentFeature(false) = %1").arg(
 444             ModuleBase_Tools::objectInfo(ModelAPI_Session::get()->activeDocument()->currentFeature(false))).toStdString().c_str());
 445 #endif
 446   ModuleBase_IModule* aModule = myWorkshop->module();
 447   if (aModule)
 448     aModule->beforeOperationStarted(aFOperation);
 449   }
 450 }
 451
 452 void XGUI_OperationMgr::onOperationStarted()
 453 {
 454   ModuleBase_Operation* aSenderOperation = dynamic_cast<ModuleBase_Operation*>(sender());
 455   updateApplyOfOperations(aSenderOperation);
 456   emit operationStarted(aSenderOperation);
 457 }
 458
 459 void XGUI_OperationMgr::onBeforeOperationAborted()
 460 {
 461   onBeforeOperationCommitted();
 462 }
 463
 464 void XGUI_OperationMgr::onOperationAborted()
 465 {
 466   ModuleBase_Operation* aSenderOperation = dynamic_cast<ModuleBase_Operation*>(sender());
 467   emit operationAborted(aSenderOperation);
 468 }
 469
 470 void XGUI_OperationMgr::onBeforeOperationCommitted()
 471 {
 472   ModuleBase_Operation* aCurrentOperation = dynamic_cast<ModuleBase_Operation*>(sender());
 473   if (!aCurrentOperation)
 474     return;
 475
 476   /// Restore the previous current feature
 477   ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>(aCurrentOperation);
 478   if (aFOperation) {
 479 #ifdef DEBUG_CURRENT_FEATURE
 480     QString aKind = aFOperation->feature()->getKind().c_str();
 481     qDebug(QString("onBeforeOperationCommitted(), edit operation = %1, feature = %2")
 482             .arg(aFOperation->isEditOperation())
 483             .arg(ModuleBase_Tools::objectInfo(aFOperation->feature())).toStdString().c_str());
 484
 485     qDebug(QString("\tdocument->currentFeature(false) = %1").arg(
 486             ModuleBase_Tools::objectInfo(ModelAPI_Session::get()->activeDocument()->currentFeature(false))).toStdString().c_str());
 487 #endif
 488
 489     if (aFOperation->isEditOperation()) {
 490       /// Restore the previous current feature
 491       setCurrentFeature(aFOperation->previousCurrentFeature());
 492     }
 493     else { // create operation
 494       // the Top created feature should stays the current. In nested operations, like Line in the Sketch or
 495       // Sketch in ExtrusionCut, a previous feature should be restored on commit. It is performed here
 496       // in order to perform it in the current transaction without opening a new one.
 497       if (myOperations.front() != aFOperation)
 498         setCurrentFeature(aFOperation->previousCurrentFeature());
 499     }
 500 #ifdef DEBUG_CURRENT_FEATURE
 501     qDebug("\tdocument->setCurrentFeature");
 502     qDebug(QString("\tdocument->currentFeature(false) = %1").arg(
 503             ModuleBase_Tools::objectInfo(ModelAPI_Session::get()->activeDocument()->currentFeature(false))).toStdString().c_str());
 504 #endif
 505     ModuleBase_IModule* aModule = myWorkshop->module();
 506     if (aModule)
 507       aModule->beforeOperationStopped(aFOperation);
 508   }
 509 }
 510
 511 void XGUI_OperationMgr::onOperationCommitted()
 512 {
 513   // apply state for all features from the stack of operations should be updated
 514   updateApplyOfOperations();
 515
 516   ModuleBase_Operation* aSenderOperation = dynamic_cast<ModuleBase_Operation*>(sender());
 517   emit operationCommitted(aSenderOperation);
 518 }
 519
 520 void XGUI_OperationMgr::onOperationResumed()
 521 {
 522   ModuleBase_Operation* aSenderOperation = dynamic_cast<ModuleBase_Operation*>(sender());
 523   emit operationResumed(aSenderOperation);
 524 }
 525
 526 void XGUI_OperationMgr::onOperationStopped()
 527 {
 528   ModuleBase_Operation* aSenderOperation = dynamic_cast<ModuleBase_Operation*>(sender());
 529   ModuleBase_Operation* aCurrentOperation = currentOperation();
 530   if (!aSenderOperation || !aCurrentOperation || aSenderOperation != aCurrentOperation)
 531     return;
 532
 533   myOperations.removeAll(aCurrentOperation);
 534   aCurrentOperation->deleteLater();
 535
 536   emit operationStopped(aCurrentOperation);
 537
 538   // get last operation which can be resumed
 539   ModuleBase_Operation* aResultOp = 0;
 540   QListIterator<ModuleBase_Operation*> anIt(myOperations);
 541   anIt.toBack();
 542   while (anIt.hasPrevious()) {
 543     ModuleBase_Operation* anOp = anIt.previous();
 544     if (anOp) {
 545       aResultOp = anOp;
 546       break;
 547     }
 548   }
 549   if (aResultOp) {
 550     bool isModified = aCurrentOperation->isModified();
 551     aResultOp->setIsModified(aResultOp->isModified() || isModified);
 552     resumeOperation(aResultOp);
 553     onValidateOperation();
 554   }
 555 }
 556
 557 bool XGUI_OperationMgr::onKeyReleased(QObject *theObject, QKeyEvent* theEvent)
 558 {
 559   // Let the manager decide what to do with the given key combination.
 560   ModuleBase_Operation* anOperation = currentOperation();
 561   bool isAccepted = false;
 562   switch (theEvent->key()) {
 563     case Qt::Key_Return:
 564     case Qt::Key_Enter: {
 565       isAccepted = onProcessEnter(theObject);
 566     }
 567     break;
 568     case Qt::Key_N:
 569     case Qt::Key_P: {
 570       bool noModifiers = (theEvent->modifiers() == Qt::NoModifier);
 571       if (noModifiers) {
 572         ModuleBase_IViewer* aViewer = myWorkshop->viewer();
 573         Handle(AIS_InteractiveContext) aContext = aViewer->AISContext();
 574         if (!aContext.IsNull()) {
 575           Handle(V3d_View) aView = aViewer->activeView();
 576           if ((theEvent->key() == Qt::Key_N))
 577             aContext->HilightNextDetected(aView);
 578           else if ((theEvent->key() == Qt::Key_P))
 579             aContext->HilightPreviousDetected(aView);
 580         }
 581       }
 582     }
 583     break;
 584     break;
 585     default:
 586       isAccepted = false;
 587       break;
 588   }
 589   //if(anOperation) {
 590   //  anOperation->keyReleased(theEvent->key());
 591   //}
 592   return isAccepted;
 593 }
 594
 595 bool XGUI_OperationMgr::onProcessEnter(QObject* theObject)
 596 {
 597   bool isAccepted = false;
 598   ModuleBase_Operation* aOperation = currentOperation();
 599   // to avoid enter processing when operation has not been started yet
 600   if (!aOperation)
 601     return isAccepted;
 602   ModuleBase_IPropertyPanel* aPanel = aOperation->propertyPanel();
 603   // only property panel enter is processed in order to do not process enter in application dialogs
 604   bool isPPChild = isChildObject(theObject, aPanel);
 605   if (!isPPChild)
 606     return isAccepted;
 607
 608   ModuleBase_ModelWidget* anActiveWgt = aPanel->activeWidget();
 609   bool isAborted = false;
 610   if (!anActiveWgt) {
 611     QWidget* aFocusWidget = aPanel->focusWidget();
 612     QToolButton* aCancelBtn = aPanel->findChild<QToolButton*>(PROP_PANEL_CANCEL);
 613     if (aFocusWidget && aCancelBtn && aFocusWidget == aCancelBtn) {
 614       abortOperation(aOperation);
 615       isAccepted = true;
 616       isAborted = true;
 617     }
 618   }
 619   if (!isAborted) {
 620     isAccepted = anActiveWgt && anActiveWgt->processEnter();
 621     if (!isAccepted) {
 622       isAccepted = myWorkshop->module()->processEnter(anActiveWgt ? anActiveWgt->attributeID() : "");
 623       if (!isAccepted) {
 624         /// functionality is similar to Apply click
 625         ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>(currentOperation());
 626         if (!aFOperation || myWorkshop->module()->getFeatureError(aFOperation->feature()).isEmpty()) {
 627           // key released is emitted to apply the current value to the model if it was modified in PP
 628           emit keyEnterReleased();
 629           commitOperation();
 630           isAccepted = true;
 631         }
 632         else
 633           isAccepted = false;
 634       }
 635     }
 636   }
 637   return isAccepted;
 638 }
 639
 640 bool XGUI_OperationMgr::onProcessDelete(QObject* theObject)
 641 {
 642   bool isAccepted = false;
 643   ModuleBase_Operation* aOperation = currentOperation();
 644   ModuleBase_ModelWidget* anActiveWgt = 0;
 645   // firstly the widget should process Delete action
 646   ModuleBase_IPropertyPanel* aPanel;
 647   bool isPPChildObject = false;
 648   if (aOperation) {
 649     aPanel = aOperation->propertyPanel();
 650     if (aPanel) {
 651       isPPChildObject = isChildObject(theObject, aPanel);
 652       // process delete in active widget only if delete sender is child of property panel
 653       // it is necessary for the case when OB is shown, user perform selection and click Delete
 654       if (isPPChildObject) {
 655         anActiveWgt = aPanel->activeWidget();
 656         if (anActiveWgt) {
 657           isAccepted = anActiveWgt->processDelete();
 658         }
 659       }
 660     }
 661   }
 662   if (!isAccepted) {
 663     // after widget, object browser and viewer should process delete
 664     /// other widgets such as line edit controls should not lead to
 665     /// processing delete by workshop
 666     XGUI_ObjectsBrowser* aBrowser = XGUI_Tools::workshop(myWorkshop)->objectBrowser();
 667     QWidget* aViewPort = myWorkshop->viewer()->activeViewPort();
 668     // property panel child object is processed to process delete performed on Apply button of PP
 669     if (theObject == aBrowser->treeView() ||
 670         isChildObject(theObject, aViewPort) ||
 671         isPPChildObject)
 672       XGUI_Tools::workshop(myWorkshop)->deleteObjects();
 673     isAccepted = true;
 674   }
 675
 676   return isAccepted;
 677 }
 678
 679 bool XGUI_OperationMgr::isChildObject(const QObject* theObject, const QObject* theParent)
 680 {
 681   bool isPPChild = false;
 682   if (theParent && theObject) {
 683     QObject* aParent = (QObject*)theObject;
 684     while (aParent ) {
 685       isPPChild = aParent == theParent;
 686       if (isPPChild)
 687         break;
 688       aParent = aParent->parent();
 689     }
 690   }
 691   return isPPChild;
 692 }