src/PartSet/PartSet_Module.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 #include "PartSet_Module.h"
   4 #include "PartSet_WidgetSketchLabel.h"
   5 #include "PartSet_Validators.h"
   6 #include "PartSet_Tools.h"
   7 #include "PartSet_WidgetPoint2d.h"
   8 #include "PartSet_WidgetPoint2dDistance.h"
   9 #include "PartSet_WidgetShapeSelector.h"
  10 #include "PartSet_WidgetPoint2dAngle.h"
  11 #include "PartSet_WidgetMultiSelector.h"
  12 #include "PartSet_WidgetEditor.h"
  13 #include "PartSet_WidgetFileSelector.h"
  14 #include "PartSet_WidgetSketchCreator.h"
  15 #include "PartSet_SketcherMgr.h"
  16 #include "PartSet_MenuMgr.h"
  17 #include "PartSet_CustomPrs.h"
  18 #include "PartSet_IconFactory.h"
  19
  20 #include "PartSet_Filters.h"
  21 #include "PartSet_FilterInfinite.h"
  22
  23 #include <PartSetPlugin_Remove.h>
  24 #include <PartSetPlugin_Part.h>
  25 #include <PartSetPlugin_Duplicate.h>
  26
  27 #include <ModuleBase_Operation.h>
  28 #include <ModuleBase_OperationAction.h>
  29 #include <ModuleBase_IViewer.h>
  30 #include <ModuleBase_IViewWindow.h>
  31 #include <ModuleBase_IPropertyPanel.h>
  32 #include <ModuleBase_WidgetEditor.h>
  33 #include <ModuleBase_WidgetValidated.h>
  34 #include <ModuleBase_FilterFactory.h>
  35 #include <ModuleBase_Tools.h>
  36 #include <ModuleBase_OperationFeature.h>
  37
  38 #include <GeomValidators_ShapeType.h>
  39 #include <GeomValidators_Face.h>
  40 #include <GeomValidators_ConstructionComposite.h>
  41 #include <GeomValidators_ZeroOffset.h>
  42 #include <GeomValidators_BooleanArguments.h>
  43 #include <GeomValidators_Different.h>
  44
  45
  46 #include <ModelAPI_Object.h>
  47 #include <ModelAPI_Events.h>
  48 #include <ModelAPI_Validator.h>
  49 #include <ModelAPI_Data.h>
  50 #include <ModelAPI_Session.h>
  51 #include <ModelAPI_ShapeValidator.h>
  52 #include <ModelAPI_ResultBody.h>
  53
  54 #include <GeomDataAPI_Point2D.h>
  55 #include <GeomDataAPI_Point.h>
  56 #include <GeomDataAPI_Dir.h>
  57
  58 #include <XGUI_Displayer.h>
  59 #include <XGUI_Workshop.h>
  60 #include <XGUI_OperationMgr.h>
  61 #include <XGUI_PropertyPanel.h>
  62 #include <XGUI_ModuleConnector.h>
  63 #include <XGUI_ContextMenuMgr.h>
  64 #include <XGUI_Tools.h>
  65 #include <XGUI_ObjectsBrowser.h>
  66 #include <XGUI_SelectionMgr.h>
  67 #include <XGUI_DataModel.h>
  68
  69 #include <SketchPlugin_Feature.h>
  70 #include <SketchPlugin_Sketch.h>
  71 #include <SketchPlugin_Line.h>
  72 #include <SketchPlugin_Arc.h>
  73 #include <SketchPlugin_Circle.h>
  74 #include <SketchPlugin_Point.h>
  75 #include <SketchPlugin_ConstraintAngle.h>
  76 #include <SketchPlugin_ConstraintLength.h>
  77 #include <SketchPlugin_ConstraintDistance.h>
  78 #include <SketchPlugin_ConstraintParallel.h>
  79 #include <SketchPlugin_ConstraintPerpendicular.h>
  80 #include <SketchPlugin_ConstraintRadius.h>
  81
  82 #include <SketcherPrs_SymbolPrs.h>
  83 #include <SketcherPrs_Tools.h>
  84
  85 #include <Events_Loop.h>
  86 #include <Config_PropManager.h>
  87 #include <Config_Keywords.h>
  88
  89 #include <StdSelect_TypeOfFace.hxx>
  90 #include <TopoDS_Vertex.hxx>
  91 #include <TopoDS.hxx>
  92 #include <TopoDS_Shape.hxx>
  93 #include <BRep_Tool.hxx>
  94 #include <AIS_Dimension.hxx>
  95
  96 #include <QObject>
  97 #include <QMouseEvent>
  98 #include <QString>
  99 #include <QTimer>
 100 #include <QApplication>
 101 #include <QMessageBox>
 102 #include <QMainWindow>
 103 #include <QLineEdit>
 104
 105 #include <GeomAlgoAPI_FaceBuilder.h>
 106 #include <GeomDataAPI_Dir.h>
 107
 108 #include <SelectMgr_ListIteratorOfListOfFilter.hxx>
 109
 110 #ifdef _DEBUG
 111 #include <QDebug>
 112 #endif
 113
 114 /*!Create and return new instance of XGUI_Module*/
 115 extern "C" PARTSET_EXPORT ModuleBase_IModule* createModule(ModuleBase_IWorkshop* theWshop)
 116 {
 117   return new PartSet_Module(theWshop);
 118 }
 119
 120 PartSet_Module::PartSet_Module(ModuleBase_IWorkshop* theWshop)
 121   : ModuleBase_IModule(theWshop),
 122   myRestartingMode(RM_None), myVisualLayerId(0)
 123 {
 124   new PartSet_IconFactory();
 125
 126   mySketchMgr = new PartSet_SketcherMgr(this);
 127   myDataModel = new PartSet_DocumentDataModel(this);
 128
 129   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(theWshop);
 130   XGUI_Workshop* aWorkshop = aConnector->workshop();
 131
 132   XGUI_OperationMgr* anOpMgr = aWorkshop->operationMgr();
 133   connect(anOpMgr, SIGNAL(keyEnterReleased()), this, SLOT(onEnterReleased()));
 134   connect(anOpMgr, SIGNAL(operationActivatedByPreselection()),
 135           this, SLOT(onOperationActivatedByPreselection()));
 136
 137   ModuleBase_IViewer* aViewer = theWshop->viewer();
 138   connect(aViewer, SIGNAL(keyRelease(ModuleBase_IViewWindow*, QKeyEvent*)),
 139           this, SLOT(onKeyRelease(ModuleBase_IViewWindow*, QKeyEvent*)));
 140   connect(aViewer, SIGNAL(viewTransformed(int)),
 141           SLOT(onViewTransformed(int)));
 142   connect(aViewer, SIGNAL(viewCreated(ModuleBase_IViewWindow*)),
 143           SLOT(onViewCreated(ModuleBase_IViewWindow*)));
 144
 145   myMenuMgr = new PartSet_MenuMgr(this);
 146   myCustomPrs = new PartSet_CustomPrs(theWshop);
 147
 148   Events_Loop* aLoop = Events_Loop::loop();
 149   aLoop->registerListener(this, Events_Loop::eventByName(EVENT_DOCUMENT_CHANGED));
 150
 151   mySelectionFilters.Append(new PartSet_GlobalFilter(myWorkshop));
 152   mySelectionFilters.Append(new PartSet_FilterInfinite(myWorkshop));
 153 }
 154
 155 PartSet_Module::~PartSet_Module()
 156 {
 157   SelectMgr_ListIteratorOfListOfFilter aIt(mySelectionFilters);
 158   for (; aIt.More(); aIt.Next()) {
 159     Handle(SelectMgr_Filter) aFilter = aIt.Value();
 160     if (!aFilter.IsNull())
 161       aFilter.Nullify();
 162   }
 163   delete myCustomPrs;
 164 }
 165
 166 void PartSet_Module::activateSelectionFilters()
 167 {
 168   SelectMgr_ListIteratorOfListOfFilter aIt(mySelectionFilters);
 169   for (; aIt.More(); aIt.Next()) {
 170     Handle(SelectMgr_Filter) aFilter = aIt.Value();
 171     if (!aFilter.IsNull())
 172       myWorkshop->viewer()->addSelectionFilter(aFilter);
 173   }
 174 }
 175
 176 void PartSet_Module::deactivateSelectionFilters()
 177 {
 178   SelectMgr_ListIteratorOfListOfFilter aIt(mySelectionFilters);
 179   for (; aIt.More(); aIt.Next()) {
 180     Handle(SelectMgr_Filter) aFilter = aIt.Value();
 181     if (!aFilter.IsNull())
 182       myWorkshop->viewer()->removeSelectionFilter(aFilter);
 183   }
 184 }
 185
 186 void PartSet_Module::registerValidators()
 187 {
 188   //Registering of validators
 189   SessionPtr aMgr = ModelAPI_Session::get();
 190   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 191   aFactory->registerValidator("PartSet_DistanceSelection", new PartSet_DistanceSelection);
 192   aFactory->registerValidator("PartSet_LengthSelection", new PartSet_LengthSelection);
 193   aFactory->registerValidator("PartSet_PerpendicularSelection", new PartSet_PerpendicularSelection);
 194   aFactory->registerValidator("PartSet_ParallelSelection", new PartSet_ParallelSelection);
 195   aFactory->registerValidator("PartSet_RadiusSelection", new PartSet_RadiusSelection);
 196   aFactory->registerValidator("PartSet_RigidSelection", new PartSet_RigidSelection);
 197   aFactory->registerValidator("PartSet_CoincidentSelection", new PartSet_CoincidentSelection);
 198   aFactory->registerValidator("PartSet_HVDirSelection", new PartSet_HVDirSelection);
 199   aFactory->registerValidator("PartSet_TangentSelection", new PartSet_TangentSelection);
 200   aFactory->registerValidator("PartSet_FilletSelection", new PartSet_FilletSelection);
 201   aFactory->registerValidator("PartSet_AngleSelection", new PartSet_AngleSelection);
 202
 203   aFactory->registerValidator("PartSet_DifferentObjects", new PartSet_DifferentObjectsValidator);
 204   aFactory->registerValidator("PartSet_DifferentShapes", new ModelAPI_ShapeValidator);
 205
 206   aFactory->registerValidator("PartSet_CoincidentAttr", new PartSet_CoincidentAttr);
 207
 208   aFactory->registerValidator("GeomValidators_ShapeType", new GeomValidators_ShapeType);
 209   aFactory->registerValidator("GeomValidators_Face", new GeomValidators_Face);
 210
 211   aFactory->registerValidator("GeomValidators_ConstructionComposite",
 212                               new GeomValidators_ConstructionComposite);
 213
 214   aFactory->registerValidator("GeomValidators_ZeroOffset",
 215                               new GeomValidators_ZeroOffset);
 216
 217   aFactory->registerValidator("GeomValidators_BooleanArguments",
 218                               new GeomValidators_BooleanArguments);
 219
 220   aFactory->registerValidator("PartSet_SketchEntityValidator",
 221                               new PartSet_SketchEntityValidator);
 222
 223   aFactory->registerValidator("PartSet_SameTypeAttr",
 224                               new PartSet_SameTypeAttrValidator);
 225
 226   aFactory->registerValidator("GeomValidators_Different",
 227                               new GeomValidators_Different);
 228 }
 229
 230 void PartSet_Module::registerFilters()
 231 {
 232   //Registering of selection filters
 233   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(workshop());
 234   ModuleBase_FilterFactory* aFactory = aConnector->selectionFilters();
 235 }
 236
 237 void PartSet_Module::registerProperties()
 238 {
 239   Config_PropManager::registerProp("Sketch planes", "planes_size", "Size", Config_Prop::Double,
 240                                    PLANE_SIZE);
 241   Config_PropManager::registerProp("Sketch planes", "planes_thickness", "Thickness",
 242                                    Config_Prop::Integer, SKETCH_WIDTH);
 243 }
 244
 245 void PartSet_Module::onOperationCommitted(ModuleBase_Operation* theOperation)
 246 {
 247   if (PartSet_SketcherMgr::isNestedSketchOperation(theOperation)) {
 248     mySketchMgr->commitNestedSketch(theOperation);
 249   }
 250
 251   ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>(theOperation);
 252   if (!aFOperation || aFOperation->isEditOperation())
 253     return;
 254   // the selection is cleared after commit the create operation
 255   // in order to do not use the same selected objects in the restarted operation
 256   // for common behaviour, the selection is cleared even if the operation is not restarted
 257   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(workshop());
 258   XGUI_Workshop* aWorkshop = aConnector->workshop();
 259   aWorkshop->selector()->clearSelection();
 260
 261   /// Restart sketcher operations automatically
 262   FeaturePtr aFeature = aFOperation->feature();
 263   std::shared_ptr<SketchPlugin_Feature> aSPFeature =
 264             std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
 265   if (aSPFeature && (myRestartingMode == RM_LastFeatureUsed ||
 266                      myRestartingMode == RM_EmptyFeatureUsed)) {
 267     myLastOperationId = aFOperation->id();
 268     myLastFeature = myRestartingMode == RM_LastFeatureUsed ? aFOperation->feature() : FeaturePtr();
 269
 270     launchOperation(myLastOperationId);
 271   }
 272   breakOperationSequence();
 273 }
 274
 275 void PartSet_Module::breakOperationSequence()
 276 {
 277   myLastOperationId = "";
 278   myLastFeature = FeaturePtr();
 279   myRestartingMode = RM_None;
 280 }
 281
 282 void PartSet_Module::onOperationAborted(ModuleBase_Operation* theOperation)
 283 {
 284   breakOperationSequence();
 285 }
 286
 287 void PartSet_Module::onOperationStarted(ModuleBase_Operation* theOperation)
 288 {
 289   if (PartSet_SketcherMgr::isSketchOperation(theOperation)) {
 290     mySketchMgr->startSketch(theOperation);
 291   }
 292   else if (PartSet_SketcherMgr::isNestedSketchOperation(theOperation)) {
 293     mySketchMgr->startNestedSketch(theOperation);
 294   }
 295
 296   ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>(theOperation);
 297   if (aFOperation)
 298     myCustomPrs->activate(aFOperation->feature());
 299 }
 300
 301 void PartSet_Module::onOperationStopped(ModuleBase_Operation* theOperation)
 302 {
 303   myCustomPrs->deactivate();
 304
 305   if (PartSet_SketcherMgr::isSketchOperation(theOperation)) {
 306     mySketchMgr->stopSketch(theOperation);
 307   }
 308   else if (PartSet_SketcherMgr::isNestedSketchOperation(theOperation)) {
 309     mySketchMgr->stopNestedSketch(theOperation);
 310   }
 311 }
 312
 313 ModuleBase_Operation* PartSet_Module::currentOperation() const
 314 {
 315   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(workshop());
 316   XGUI_OperationMgr* anOpMgr = aConnector->workshop()->operationMgr();
 317   return anOpMgr->currentOperation();
 318 }
 319
 320 bool PartSet_Module::canUndo() const
 321 {
 322   bool aCanUndo = false;
 323   SessionPtr aMgr = ModelAPI_Session::get();
 324   if (aMgr->hasModuleDocument() && aMgr->canUndo()) {
 325     aCanUndo = !aMgr->isOperation();
 326     if (!aCanUndo) // check the enable state additionally by sketch manager
 327       aCanUndo = aMgr->canUndo();
 328   }
 329   return aCanUndo;
 330 }
 331
 332 bool PartSet_Module::canRedo() const
 333 {
 334   bool aCanRedo = false;
 335   SessionPtr aMgr = ModelAPI_Session::get();
 336   if (aMgr->hasModuleDocument() && aMgr->canRedo()) {
 337     aCanRedo = !aMgr->isOperation();
 338     if (!aCanRedo) // check the enable state additionally by sketch manager
 339       aCanRedo = aMgr->canRedo();
 340   }
 341   return aCanRedo;
 342 }
 343
 344 bool PartSet_Module::canApplyAction(const ObjectPtr& theObject, const QString& theActionId) const
 345 {
 346   bool aValid = true;
 347   if (theActionId == "DELETE_CMD" || theActionId == "MOVE_CMD") {
 348     FeaturePtr aFeature = ModelAPI_Feature::feature(theObject);
 349     if (aFeature) {
 350       // part features are removed in the PartSet module only.
 351       if (aFeature->getKind() == PartSetPlugin_Part::ID())
 352         aValid = false;
 353     }
 354   }
 355   return aValid;
 356 }
 357
 358 bool PartSet_Module::canCommitOperation() const
 359 {
 360   return mySketchMgr->canCommitOperation();
 361 }
 362
 363 bool PartSet_Module::canDisplayObject(const ObjectPtr& theObject) const
 364 {
 365   // the sketch manager put the restriction to the objects display
 366   return mySketchMgr->canDisplayObject(theObject);
 367 }
 368
 369 bool PartSet_Module::canActivateSelection(const ObjectPtr& theObject) const
 370 {
 371   bool aCanActivate = ModuleBase_IModule::canActivateSelection(theObject);
 372
 373   ModuleBase_Operation* anOperation = myWorkshop->currentOperation();
 374   bool isSketchOp = PartSet_SketcherMgr::isSketchOperation(anOperation),
 375        isNestedOp = PartSet_SketcherMgr::isNestedSketchOperation(anOperation);
 376   if (isSketchOp || isNestedOp) {
 377     // in active sketch operation it is possible to activate operation object in selection
 378     // in the edit operation, e.g. points of the line can be moved when the line is edited
 379     ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>(anOperation);
 380     aCanActivate = aCanActivate || (aFOperation && aFOperation->isEditOperation());
 381   }
 382   return aCanActivate;
 383 }
 384
 385 bool PartSet_Module::addViewerMenu(QMenu* theMenu, const QMap<QString, QAction*>& theStdActions) const
 386 {
 387   return myMenuMgr->addViewerMenu(theMenu, theStdActions);
 388 }
 389
 390 void PartSet_Module::updateViewerMenu(const QMap<QString, QAction*>& theStdActions)
 391 {
 392   myMenuMgr->updateViewerMenu(theStdActions);
 393 }
 394
 395
 396 void PartSet_Module::activeSelectionModes(QIntList& theModes)
 397 {
 398   theModes.clear();
 399   if (mySketchMgr->activeSketch().get())
 400     PartSet_SketcherMgr::sketchSelectionModes(theModes);
 401 }
 402
 403 bool PartSet_Module::isMouseOverWindow()
 404 {
 405   return mySketchMgr->isMouseOverWindow();
 406 }
 407
 408 void PartSet_Module::closeDocument()
 409 {
 410   clearViewer();
 411 }
 412
 413 void PartSet_Module::clearViewer()
 414 {
 415   myCustomPrs->clearPrs();
 416 }
 417
 418 void PartSet_Module::propertyPanelDefined(ModuleBase_Operation* theOperation)
 419 {
 420   ModuleBase_OperationFeature* aFOperation = dynamic_cast<ModuleBase_OperationFeature*>(theOperation);
 421   if (!aFOperation)
 422     return;
 423
 424   ModuleBase_IPropertyPanel* aPanel = aFOperation->propertyPanel();
 425   if (PartSet_SketcherMgr::isSketchOperation(aFOperation) &&  (aFOperation->isEditOperation())) {
 426     // we have to manually activate the sketch label in edit mode
 427       aPanel->activateWidget(aPanel->modelWidgets().first());
 428       return;
 429   }
 430
 431   // Restart last operation type
 432   if ((aFOperation->id() == myLastOperationId) && myLastFeature) {
 433     ModuleBase_ModelWidget* aWgt = aPanel->activeWidget();
 434     if (aFOperation->id().toStdString() == SketchPlugin_Line::ID()) {
 435       // Initialise new line with first point equal to end of previous
 436       PartSet_WidgetPoint2D* aPnt2dWgt = dynamic_cast<PartSet_WidgetPoint2D*>(aWgt);
 437       if (aPnt2dWgt) {
 438         std::shared_ptr<ModelAPI_Data> aData = myLastFeature->data();
 439         std::shared_ptr<GeomDataAPI_Point2D> aPoint =
 440           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::END_ID()));
 441         if (aPoint) {
 442           aPnt2dWgt->setPoint(aPoint->x(), aPoint->y());
 443           PartSet_Tools::setConstraints(mySketchMgr->activeSketch(), aFOperation->feature(),
 444             aWgt->attributeID(), aPoint->x(), aPoint->y());
 445           aPanel->activateNextWidget(aPnt2dWgt);
 446         }
 447       }
 448     }
 449   }
 450 }
 451
 452
 453 void PartSet_Module::onSelectionChanged()
 454 {
 455   ModuleBase_Operation* aOperation = myWorkshop->currentOperation();
 456   if (!aOperation)
 457     return;
 458
 459   bool isSketcherOp = false;
 460   // An edit operation is enable only if the current opeation is the sketch operation
 461   if (mySketchMgr->activeSketch()) {
 462     if (PartSet_Tools::sketchPlane(mySketchMgr->activeSketch()))
 463       isSketcherOp = PartSet_SketcherMgr::isSketchOperation(aOperation);
 464   }
 465   if (isSketcherOp) {
 466     // Editing of constraints can be done on selection
 467     ModuleBase_ISelection* aSelect = myWorkshop->selection();
 468     QList<ModuleBase_ViewerPrs> aSelected = aSelect->getSelected();
 469     if (aSelected.size() == 1) {
 470       ModuleBase_ViewerPrs aPrs = aSelected.first();
 471       ObjectPtr aObject = aPrs.object();
 472       FeaturePtr aFeature = ModelAPI_Feature::feature(aObject);
 473       if (aFeature) {
 474         std::string aId = aFeature->getKind();
 475         if ((aId == SketchPlugin_ConstraintRadius::ID()) ||
 476             (aId == SketchPlugin_ConstraintLength::ID()) ||
 477             (aId == SketchPlugin_ConstraintDistance::ID()) ||
 478             (aId == SketchPlugin_ConstraintAngle::ID())) {
 479           editFeature(aFeature);
 480         }
 481       }
 482     }
 483   }
 484 }
 485
 486 void PartSet_Module::onKeyRelease(ModuleBase_IViewWindow* theWnd, QKeyEvent* theEvent)
 487 {
 488   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(workshop());
 489   XGUI_OperationMgr* anOpMgr = aConnector->workshop()->operationMgr();
 490   anOpMgr->onKeyReleased(theEvent);
 491 }
 492
 493 void PartSet_Module::onEnterReleased()
 494 {
 495   myRestartingMode = RM_EmptyFeatureUsed;
 496 }
 497
 498 void PartSet_Module::onOperationActivatedByPreselection()
 499 {
 500   ModuleBase_Operation* anOperation = myWorkshop->currentOperation();
 501   if(anOperation && PartSet_SketcherMgr::isNestedSketchOperation(anOperation)) {
 502     // Set final definitions if they are necessary
 503     //propertyPanelDefined(aOperation);
 504
 505     /// Commit sketcher operations automatically
 506     anOperation->commit();
 507   }
 508 }
 509
 510 void PartSet_Module::onNoMoreWidgets()
 511 {
 512   ModuleBase_Operation* anOperation = myWorkshop->currentOperation();
 513   if (anOperation) {
 514     if (PartSet_SketcherMgr::isNestedSketchOperation(anOperation)) {
 515       if (myRestartingMode != RM_Forbided)
 516         myRestartingMode = RM_LastFeatureUsed;
 517       anOperation->commit();
 518     }
 519   }
 520 }
 521
 522 void PartSet_Module::onVertexSelected()
 523 {
 524   ModuleBase_Operation* aOperation = myWorkshop->currentOperation();
 525   if (aOperation->id().toStdString() == SketchPlugin_Line::ID()) {
 526     /// If last line finished on vertex the lines creation sequence has to be break
 527     ModuleBase_IPropertyPanel* aPanel = aOperation->propertyPanel();
 528     ModuleBase_ModelWidget* anActiveWidget = aPanel->activeWidget();
 529     const QList<ModuleBase_ModelWidget*>& aWidgets = aPanel->modelWidgets();
 530     QList<ModuleBase_ModelWidget*>::const_iterator anIt = aWidgets.begin(), aLast = aWidgets.end();
 531     bool aFoundWidget = false;
 532     bool aFoundObligatory = false;
 533     for (; anIt != aLast && !aFoundObligatory; anIt++) {
 534       if (!aFoundWidget)
 535         aFoundWidget = *anIt == anActiveWidget;
 536       else
 537         aFoundObligatory = (*anIt)->isObligatory();
 538     }
 539     if (!aFoundObligatory)
 540       myRestartingMode = RM_Forbided;
 541   }
 542 }
 543
 544 ModuleBase_ModelWidget* PartSet_Module::createWidgetByType(const std::string& theType, QWidget* theParent,
 545                                             Config_WidgetAPI* theWidgetApi, std::string theParentId)
 546 {
 547   ModuleBase_IWorkshop* aWorkshop = workshop();
 548   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(aWorkshop);
 549   XGUI_Workshop* aXUIWorkshop = aConnector->workshop();
 550   ModuleBase_ModelWidget* aWgt = NULL;
 551   if (theType == "sketch-start-label") {
 552     PartSet_WidgetSketchLabel* aLabelWgt = new PartSet_WidgetSketchLabel(theParent, aWorkshop,
 553       theWidgetApi, theParentId, mySketchMgr->isConstraintsShown());
 554     connect(aLabelWgt, SIGNAL(planeSelected(const std::shared_ptr<GeomAPI_Pln>&)),
 555       mySketchMgr, SLOT(onPlaneSelected(const std::shared_ptr<GeomAPI_Pln>&)));
 556     connect(aLabelWgt, SIGNAL(showConstraintToggled(bool)),
 557       mySketchMgr, SLOT(onShowConstraintsToggle(bool)));
 558     aWgt = aLabelWgt;
 559   } else if (theType == "sketch-2dpoint_selector") {
 560     PartSet_WidgetPoint2D* aPointWgt = new PartSet_WidgetPoint2D(theParent, aWorkshop,
 561                                                                  theWidgetApi, theParentId);
 562     aPointWgt->setSketch(mySketchMgr->activeSketch());
 563     connect(aPointWgt, SIGNAL(vertexSelected()), this, SLOT(onVertexSelected()));
 564     aWgt = aPointWgt;
 565   } else if (theType == "point2ddistance") {
 566     PartSet_WidgetPoint2dDistance* aDistanceWgt = new PartSet_WidgetPoint2dDistance(theParent,
 567                                                         aWorkshop, theWidgetApi, theParentId);
 568     aDistanceWgt->setSketch(mySketchMgr->activeSketch());
 569     aWgt = aDistanceWgt;
 570   } else if(theType == "point2dangle") {
 571     PartSet_WidgetPoint2dAngle* anAngleWgt = new PartSet_WidgetPoint2dAngle(theParent,
 572                                                            aWorkshop, theWidgetApi, theParentId);
 573     anAngleWgt->setSketch(mySketchMgr->activeSketch());
 574     aWgt = anAngleWgt;
 575   } else if (theType == "sketch_shape_selector") {
 576     PartSet_WidgetShapeSelector* aShapeSelectorWgt =
 577       new PartSet_WidgetShapeSelector(theParent, aWorkshop, theWidgetApi, theParentId);
 578     aShapeSelectorWgt->setSketcher(mySketchMgr->activeSketch());
 579     aWgt = aShapeSelectorWgt;
 580   } else if (theType == "sketch_multi_selector") {
 581     PartSet_WidgetMultiSelector* aShapeSelectorWgt =
 582       new PartSet_WidgetMultiSelector(theParent, aWorkshop, theWidgetApi, theParentId);
 583     aShapeSelectorWgt->setSketcher(mySketchMgr->activeSketch());
 584     aWgt = aShapeSelectorWgt;
 585   } else if (theType == WDG_DOUBLEVALUE_EDITOR) {
 586     aWgt = new PartSet_WidgetEditor(theParent, aWorkshop, theWidgetApi, theParentId);
 587   } else if (theType == "export_file_selector") {
 588     aWgt = new PartSet_WidgetFileSelector(theParent, aWorkshop, theWidgetApi, theParentId);
 589   } else if (theType == "sketch_launcher") {
 590     aWgt = new PartSet_WidgetSketchCreator(theParent, this, theWidgetApi, theParentId);
 591   }
 592   return aWgt;
 593 }
 594
 595
 596 bool PartSet_Module::deleteObjects()
 597 {
 598   SessionPtr aMgr = ModelAPI_Session::get();
 599   // 1. check whether the delete should be processed in the module
 600   ModuleBase_Operation* anOperation = myWorkshop->currentOperation();
 601   bool isSketchOp = PartSet_SketcherMgr::isSketchOperation(anOperation),
 602        isNestedOp = PartSet_SketcherMgr::isNestedSketchOperation(anOperation);
 603   if (isSketchOp || isNestedOp) {
 604     // 2. find selected presentations
 605     // selected objects should be collected before the current operation abort because
 606     // the abort leads to selection lost on constraint objects. It can be corrected after #386 issue
 607     XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(workshop());
 608     XGUI_Workshop* aWorkshop = aConnector->workshop();
 609     ModuleBase_ISelection* aSel = workshop()->selection();
 610     QObjectPtrList aSelectedObj = aSel->selectedPresentations();
 611     // if there are no selected objects in the viewer, that means that the selection in another
 612     // place cased this method. It is necessary to return the false value to understande in above
 613     // method that delete is not processed
 614     if (aSelectedObj.count() == 0)
 615       return false;
 616
 617     // avoid delete of the objects, which are not belong to the current sketch
 618     // in order to do not delete results of other sketches
 619     QObjectPtrList aSketchObjects;
 620     QObjectPtrList::const_iterator anIt = aSelectedObj.begin(), aLast = aSelectedObj.end();
 621     for ( ; anIt != aLast; anIt++) {
 622       ObjectPtr anObject = *anIt;
 623       if (mySketchMgr->isObjectOfSketch(anObject)) {
 624         // sketch feature should be used in this list because workshop deletes features only
 625         // results are skipped
 626         FeaturePtr aSketchFeature = ModelAPI_Feature::feature(anObject);
 627         aSketchObjects.append(aSketchFeature);
 628       }
 629     }
 630     // if the selection contains only local selected presentations from other sketches,
 631     // the Delete operation should not be done at all
 632     if (aSketchObjects.size() == 0)
 633       return true;
 634
 635     // 3. start operation
 636     QString aDescription = aWorkshop->contextMenuMgr()->action("DELETE_CMD")->text();
 637     ModuleBase_OperationAction* anAction = new ModuleBase_OperationAction(aDescription, this);
 638
 639     XGUI_OperationMgr* anOpMgr = aConnector->workshop()->operationMgr();
 640     // the active nested sketch operation should be aborted unconditionally
 641     if (isSketchOp)
 642       anOperation->addGrantedOperationId(anAction->id());
 643     if (!anOpMgr->canStartOperation(anAction->id()))
 644       return true; // the objects are processed but can not be deleted
 645     if (isSketchOp)
 646       anOperation->removeGrantedOperationId(anAction->id());
 647
 648     anOpMgr->startOperation(anAction);
 649     // 4. delete features
 650     // sketch feature should be skipped, only sub-features can be removed
 651     // when sketch operation is active
 652     aWorkshop->deleteFeatures(aSketchObjects);
 653     // 5. stop operation
 654     anOpMgr->commitOperation();
 655   } else {
 656     bool isPartRemoved = false;
 657     // Delete part with help of PartSet plugin
 658     // TODO: the deleted objects has to be processed by multiselection
 659     QObjectPtrList aObjects = myWorkshop->selection()->selectedObjects();
 660     if (aObjects.size() == 1) {
 661       ObjectPtr aObj = aObjects.first();
 662       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aObj);
 663       if (aFeature.get() && (aFeature->getKind() == PartSetPlugin_Part::ID())) {
 664         // Remove feature should be created in the document of the part results
 665         ResultPtr aPartResult = aFeature->firstResult();
 666         if (aPartResult.get()) {
 667           std::shared_ptr<ModelAPI_ResultPart> aPart =
 668                        std::dynamic_pointer_cast<ModelAPI_ResultPart>(aPartResult);
 669           DocumentPtr aPartDoc = aPart->partDoc();
 670           if (aPartDoc.get()) {
 671             aMgr->startOperation(PartSetPlugin_Remove::ID());
 672             FeaturePtr aFeature = aPartDoc->addFeature(PartSetPlugin_Remove::ID());
 673             aFeature->execute();
 674             aMgr->finishOperation();
 675             isPartRemoved = true;
 676           }
 677         }
 678       }
 679     }
 680     return isPartRemoved;
 681   }
 682   return true;
 683 }
 684
 685 void PartSet_Module::onFeatureTriggered()
 686 {
 687   QAction* aCmd = dynamic_cast<QAction*>(sender());
 688   if (aCmd->isCheckable() && aCmd->isChecked()) {
 689     // 1. check whether the delete should be processed in the module
 690     ModuleBase_Operation* anOperation = myWorkshop->currentOperation();
 691     bool isNestedOp = PartSet_SketcherMgr::isNestedCreateOperation(anOperation);
 692     if (isNestedOp) {
 693       // in case if in the viewer nothing is displayed, the create operation should not be
 694       // comitted even if all values of the feature are initialized
 695       if (!mySketchMgr->canDisplayCurrentCreatedFeature()) {
 696         // the action information should be saved before the operation is aborted
 697         // because this abort leads to update command status, which unchecks this action
 698         anOperation->abort();
 699         launchOperation(aCmd->data().toString());
 700       }
 701     }
 702   }
 703   ModuleBase_IModule::onFeatureTriggered();
 704 }
 705
 706 void PartSet_Module::onObjectDisplayed(ObjectPtr theObject, AISObjectPtr theAIS)
 707 {
 708   Handle(AIS_InteractiveObject) anAIS = theAIS->impl<Handle(AIS_InteractiveObject)>();
 709   if (!anAIS.IsNull()) {
 710     Handle(AIS_InteractiveContext) aCtx = anAIS->GetContext();
 711     Handle(AIS_Dimension) aDim = Handle(AIS_Dimension)::DownCast(anAIS);
 712     if (!aDim.IsNull()) {
 713       aCtx->SetZLayer(aDim, myVisualLayerId);
 714     } else {
 715       Handle(SketcherPrs_SymbolPrs) aCons = Handle(SketcherPrs_SymbolPrs)::DownCast(anAIS);
 716       if (!aCons.IsNull())
 717         aCtx->SetZLayer(aCons, myVisualLayerId);
 718     }
 719   }
 720 }
 721
 722 void PartSet_Module::onBeforeObjectErase(ObjectPtr theObject, AISObjectPtr theAIS)
 723 {
 724   // it should be recomputed in order to disappear in the viewer if the corresponded object
 725   // is erased
 726   if (myCustomPrs->isActive())
 727     myCustomPrs->customize(theObject);
 728 }
 729
 730 void PartSet_Module::onViewTransformed(int theTrsfType)
 731 {
 732   // Set length of arrows constant in pixel size
 733   // if the operation is panning or rotate or panglobal then do nothing
 734   if ((theTrsfType == 1) || (theTrsfType == 3) || (theTrsfType == 4))
 735     return;
 736
 737   ModuleBase_IViewer* aViewer = myWorkshop->viewer();
 738   //Handle(V3d_View) aView = aViewer->activeView();
 739
 740   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(myWorkshop);
 741   XGUI_Workshop* aWorkshop = aConnector->workshop();
 742   XGUI_Displayer* aDisplayer = aWorkshop->displayer();
 743   Handle(AIS_InteractiveContext) aContext = aViewer->AISContext();
 744
 745   Handle(V3d_Viewer) aV3dViewer = aContext->CurrentViewer();
 746   Handle(V3d_View) aView;
 747   double aScale = 0;
 748   for (aV3dViewer->InitDefinedViews();
 749        aV3dViewer->MoreDefinedViews();
 750        aV3dViewer->NextDefinedViews()) {
 751     Handle(V3d_View) aV = aV3dViewer->DefinedView();
 752     double aS = aV->Scale();
 753     if (aS > aScale) {
 754       aScale = aS;
 755       aView = aV;
 756     }
 757   }
 758   if (aView.IsNull())
 759     return;
 760   double aLen = aView->Convert(20);
 761
 762   double aPrevLen = SketcherPrs_Tools::getArrowSize();
 763   SketcherPrs_Tools::setArrowSize(aLen);
 764   const double aPrevScale = aViewer->Scale(aViewer->activeView());
 765   const double aCurScale = aViewer->activeView()->Camera()->Scale();
 766   aViewer->SetScale(aViewer->activeView(), aCurScale);
 767   SketcherPrs_Tools::setTextHeight (aCurScale / aPrevScale * SketcherPrs_Tools::getTextHeight());
 768   bool isModified = false;
 769   QList<AISObjectPtr> aPrsList = aDisplayer->displayedPresentations();
 770   foreach (AISObjectPtr aAIS, aPrsList) {
 771     Handle(AIS_InteractiveObject) aAisObj = aAIS->impl<Handle(AIS_InteractiveObject)>();
 772
 773     Handle(AIS_Dimension) aDim = Handle(AIS_Dimension)::DownCast(aAisObj);
 774     if (!aDim.IsNull()) {
 775       aDim->DimensionAspect()->ArrowAspect()->SetLength(aLen);
 776       aContext->Redisplay(aDim, false);
 777       isModified = true;
 778     }
 779   }
 780   if (isModified)
 781     aDisplayer->updateViewer();
 782 }
 783
 784 void PartSet_Module::customizeObject(ObjectPtr theObject)
 785 {
 786   if (myCustomPrs->isActive())
 787     myCustomPrs->customize(theObject);
 788 }
 789
 790 void PartSet_Module::customizeObjectBrowser(QWidget* theObjectBrowser)
 791 {
 792   XGUI_ObjectsBrowser* aOB = dynamic_cast<XGUI_ObjectsBrowser*>(theObjectBrowser);
 793   if (aOB) {
 794     QLineEdit* aLabel = aOB->activeDocLabel();
 795     QPalette aPalet = aLabel->palette();
 796     aPalet.setColor(QPalette::Text, QColor(0, 72, 140));
 797     aLabel->setPalette(aPalet);
 798     aOB->treeView()->setExpandsOnDoubleClick(false);
 799 #ifdef ModuleDataModel
 800     connect(aOB->treeView(), SIGNAL(doubleClicked(const QModelIndex&)),
 801       SLOT(onTreeViewDoubleClick(const QModelIndex&)));
 802     connect(aOB, SIGNAL(headerMouseDblClicked(const QModelIndex&)),
 803       SLOT(onTreeViewDoubleClick(const QModelIndex&)));
 804     connect(aOB->treeView(), SIGNAL(doubleClicked(const QModelIndex&)),
 805       myDataModel, SLOT(onMouseDoubleClick(const QModelIndex&)));
 806 #endif
 807   }
 808 }
 809
 810 ObjectPtr PartSet_Module::findPresentedObject(const AISObjectPtr& theAIS) const
 811 {
 812   ObjectPtr anObject;
 813   ModuleBase_Operation* aOperation = myWorkshop->currentOperation();
 814   if (aOperation) {
 815     /// If last line finished on vertex the lines creation sequence has to be break
 816     ModuleBase_IPropertyPanel* aPanel = aOperation->propertyPanel();
 817     ModuleBase_ModelWidget* anActiveWidget = aPanel->activeWidget();
 818     // if there is an active widget, find the presented object in it
 819     if (!anActiveWidget)
 820       anActiveWidget = aPanel->preselectionWidget();
 821
 822     ModuleBase_WidgetValidated* aWidgetValidated = dynamic_cast<ModuleBase_WidgetValidated*>
 823                                                                            (anActiveWidget);
 824     if (aWidgetValidated)
 825       anObject = aWidgetValidated->findPresentedObject(theAIS);
 826   }
 827   return anObject;
 828 }
 829
 830 void PartSet_Module::addObjectBrowserMenu(QMenu* theMenu) const
 831 {
 832   QObjectPtrList aObjects = myWorkshop->selection()->selectedObjects();
 833   int aSelected = aObjects.size();
 834   SessionPtr aMgr = ModelAPI_Session::get();
 835   if (aSelected == 1) {
 836     bool hasResult = false;
 837     bool hasFeature = false;
 838     bool hasParameter = false;
 839     bool hasSubFeature = false;
 840     ModuleBase_Tools::checkObjects(aObjects, hasResult, hasFeature, hasParameter, hasSubFeature);
 841
 842     ObjectPtr aObject = aObjects.first();
 843     if (aObject) {
 844       ResultPartPtr aPart = std::dynamic_pointer_cast<ModelAPI_ResultPart>(aObject);
 845       FeaturePtr aPartFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aObject);
 846       bool isPart = aPart.get() ||
 847         (aPartFeature.get() && (aPartFeature->getKind() == PartSetPlugin_Part::ID()));
 848       if (isPart) {
 849         DocumentPtr aPartDoc;
 850         if (!aPart.get()) {
 851           aPart = std::dynamic_pointer_cast<ModelAPI_ResultPart>(aPartFeature->firstResult());
 852         }
 853         if (aPart.get()) // this may be null is Part feature is disabled
 854           aPartDoc = aPart->partDoc();
 855         if (aMgr->activeDocument() == aPartDoc)
 856           theMenu->addAction(myMenuMgr->action("DEACTIVATE_PART_CMD"));
 857         else
 858           theMenu->addAction(myMenuMgr->action("ACTIVATE_PART_CMD"));
 859       } else if (aObject->document() == aMgr->activeDocument()) {
 860         if (hasParameter || hasFeature)
 861           theMenu->addAction(myMenuMgr->action("EDIT_CMD"));
 862       }
 863
 864       ResultBodyPtr aResult = std::dynamic_pointer_cast<ModelAPI_ResultBody>(aObject);
 865       if( aResult.get() )
 866       {
 867         theMenu->addAction(myMenuMgr->action("SELECT_PARENT_CMD"));
 868       }
 869     } else {  // If feature is 0 the it means that selected root object (document)
 870       if (aMgr->activeDocument() != aMgr->moduleDocument())
 871         theMenu->addAction(myMenuMgr->action("ACTIVATE_PARTSET_CMD"));
 872     }
 873   } else if (aSelected == 0) {
 874     // if there is no selection then it means that upper label is selected
 875     QModelIndexList aIndexes = myWorkshop->selection()->selectedIndexes();
 876     if (aIndexes.size() == 0) // it means that selection happens in top label outside of tree view
 877       if (aMgr->activeDocument() != aMgr->moduleDocument())
 878         theMenu->addAction(myMenuMgr->action("ACTIVATE_PARTSET_CMD"));
 879   }
 880   bool aCanDeactivate = (myWorkshop->currentOperation() == 0);
 881   myMenuMgr->action("ACTIVATE_PARTSET_CMD")->setEnabled(aCanDeactivate);
 882   myMenuMgr->action("DEACTIVATE_PART_CMD")->setEnabled(aCanDeactivate);
 883   myMenuMgr->action("ACTIVATE_PART_CMD")->setEnabled(aCanDeactivate);
 884 }
 885
 886 void PartSet_Module::processEvent(const std::shared_ptr<Events_Message>& theMessage)
 887 {
 888   if (theMessage->eventID() == Events_Loop::loop()->eventByName(EVENT_DOCUMENT_CHANGED)) {
 889     // Do not change activation of parts if an operation active
 890     static QStringList aAllowActivationList;
 891     if (aAllowActivationList.isEmpty())
 892       aAllowActivationList <<
 893       QString(PartSetPlugin_Part::ID().c_str()) <<
 894       QString(PartSetPlugin_Duplicate::ID().c_str()) <<
 895       QString(PartSetPlugin_Remove::ID().c_str());
 896     if (myWorkshop->currentOperation() &&
 897       (!aAllowActivationList.contains(myWorkshop->currentOperation()->id())))
 898       return;
 899     XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(myWorkshop);
 900     XGUI_Workshop* aWorkshop = aConnector->workshop();
 901     XGUI_DataTree* aTreeView = aWorkshop->objectBrowser()->treeView();
 902     QLineEdit* aLabel = aWorkshop->objectBrowser()->activeDocLabel();
 903     QPalette aPalet = aLabel->palette();
 904
 905     SessionPtr aMgr = ModelAPI_Session::get();
 906     DocumentPtr aActiveDoc = aMgr->activeDocument();
 907 #ifdef ModuleDataModel
 908     QModelIndex aOldIndex = myDataModel->activePartTree();
 909     DocumentPtr aDoc = aMgr->moduleDocument();
 910     if (aActiveDoc == aDoc) {
 911       if (aOldIndex.isValid())
 912         aTreeView->setExpanded(aOldIndex, false);
 913       myDataModel->deactivatePart();
 914       aPalet.setColor(QPalette::Text, QColor(0, 72, 140));
 915     } else {
 916       std::string aGrpName = ModelAPI_ResultPart::group();
 917       for (int i = 0; i < aDoc->size(aGrpName); i++) {
 918         ResultPartPtr aPart = std::dynamic_pointer_cast<ModelAPI_ResultPart>(aDoc->object(aGrpName, i));
 919         if (aPart->partDoc() == aActiveDoc) {
 920           QModelIndex aIndex = myDataModel->partIndex(aPart);
 921           if (myDataModel->activatePart(aIndex)) {
 922             if (aOldIndex.isValid())
 923               aTreeView->setExpanded(aOldIndex, false);
 924             aTreeView->setExpanded(myDataModel->activePartTree(), true);
 925             aPalet.setColor(QPalette::Text, Qt::black);
 926           }
 927           break;
 928         }
 929       }
 930     }
 931 #else
 932     // Problem with MPV: At first time on creation it doesn't work because Part feature
 933     // creation event will be sent after
 934     if (aActivePartIndex.isValid())
 935       aTreeView->setExpanded(aActivePartIndex, false);
 936     XGUI_DataModel* aDataModel = aWorkshop->objectBrowser()->dataModel();
 937     aActivePartIndex = aDataModel->documentRootIndex(aActiveDoc);
 938     if (aActivePartIndex.isValid())
 939       aTreeView->setExpanded(aActivePartIndex, true);
 940 #endif
 941     aLabel->setPalette(aPalet);
 942     aWorkshop->updateCommandStatus();
 943
 944     // Update displayed objects in order to update active color
 945     XGUI_Displayer* aDisplayer = aWorkshop->displayer();
 946     QObjectPtrList aObjects = aDisplayer->displayedObjects();
 947     foreach(ObjectPtr aObj, aObjects)
 948       aDisplayer->redisplay(aObj, false);
 949     aDisplayer->updateViewer();
 950   }
 951 }
 952
 953 void PartSet_Module::onTreeViewDoubleClick(const QModelIndex& theIndex)
 954 {
 955   if (myWorkshop->currentOperation()) // Do not change activation of parts if an operation active
 956     return;
 957   SessionPtr aMgr = ModelAPI_Session::get();
 958   if (!theIndex.isValid()) {
 959     aMgr->setActiveDocument(aMgr->moduleDocument());
 960     return;
 961   }
 962   if (theIndex.column() != 0) // Use only first column
 963     return;
 964   ObjectPtr aObj = myDataModel->object(theIndex);
 965   ResultPartPtr aPart = std::dynamic_pointer_cast<ModelAPI_ResultPart>(aObj);
 966   if (!aPart.get()) { // Probably this is Feature
 967     FeaturePtr aPartFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aObj);
 968     if (aPartFeature.get() && (aPartFeature->getKind() == PartSetPlugin_Part::ID())) {
 969       aPart = std::dynamic_pointer_cast<ModelAPI_ResultPart>(aPartFeature->firstResult());
 970     }
 971   }
 972   if (aPart.get()) { // if this is a part
 973     if (aPart->partDoc() == aMgr->activeDocument()) {
 974       aMgr->setActiveDocument(aMgr->moduleDocument());
 975     } else {
 976       aPart->activate();
 977     }
 978   }
 979 }
 980
 981
 982 void PartSet_Module::onViewCreated(ModuleBase_IViewWindow*)
 983 {
 984   // z layer is created for all started operations in order to visualize operation AIS presentation
 985   // over the object
 986   Handle(V3d_Viewer) aViewer = myWorkshop->viewer()->AISContext()->CurrentViewer();
 987   if (myVisualLayerId == 0) {
 988     if (myVisualLayerId == 0)
 989       aViewer->AddZLayer(myVisualLayerId);
 990   } else {
 991     TColStd_SequenceOfInteger aZList;
 992     aViewer->GetAllZLayers(aZList);
 993     bool aFound = false;
 994     for (int i = 1; i <= aZList.Length(); i++) {
 995       if (aZList(i) == myVisualLayerId) {
 996         aFound = true;
 997         break;
 998       }
 999     }
1000     if (!aFound)
1001       aViewer->AddZLayer(myVisualLayerId);
1002   }
1003 }