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refs #369: local CS for profiles
[modules/hydro.git] / src / HYDROGUI / HYDROGUI_DataModel.cxx
index d37789b5b61a58d9ed59202acb78f75c39300ea1..cb445127bd4694ca6f75093699e15852d3b2b8a3 100644 (file)
@@ -30,7 +30,9 @@
 
 #include <HYDROData_Bathymetry.h>
 #include <HYDROData_CalculationCase.h>
+#include <HYDROGUI_DataModelSync.h>
 #include <HYDROData_Document.h>
+#include <HYDROData_DummyObject3D.h>
 #include <HYDROData_Image.h>
 #include <HYDROData_ImmersibleZone.h>
 #include <HYDROData_Iterator.h>
@@ -60,6 +62,7 @@
 #include <SUIT_ResourceMgr.h>
 #include <SUIT_Study.h>
 #include <SUIT_Tools.h>
+#include <SUIT_TreeSync.h>
 
 #include <HYDROData_Document.h>
 
 #include <QApplication>
 #include <QDir>
 
+// #define DEB_GROUPS 1
+#ifdef DEB_GROUPS
+#include <HYDROData_ShapesGroup.h>
+#endif
+
 static HYDROData_SequenceOfObjects myCopyingObjects;
 
 HYDROGUI_DataModel::HYDROGUI_DataModel( CAM_Module* theModule )
@@ -180,13 +188,13 @@ bool HYDROGUI_DataModel::dumpPython( const QString& theURL,
   if ( aDocument.IsNull() || !aStudy )
     return false;
 
-  QString aFileToExport = aStudy->GetTmpDir( theURL.toLatin1().constData(), isMultiFile ).c_str();
-  aFileToExport += QString( QDir::separator() ) + "HYDRO.py";
-
-  bool aRes = aDocument->DumpToPython( aFileToExport );
+  QString aDir = aStudy->GetTmpDir( theURL.toLatin1().constData(), isMultiFile ).c_str();
+  QString aFileToExport = aDir + QString( QDir::separator() ) + "HYDRO.py";
 
+  bool aRes = aDocument->DumpToPython( aFileToExport, isMultiFile );
   if ( aRes )
   {
+    theListOfFiles.append( aDir );
     theListOfFiles.append( aFileToExport );
   }
 
@@ -213,19 +221,8 @@ void HYDROGUI_DataModel::update( const int theStudyId )
   if( !aStudyRoot )
     return;
 
-  // create root object if not exist
-  CAM_DataObject* aRootObj = root();
-  if( !aRootObj )
-    aRootObj = createRootModuleObject( aStudyRoot );
-
-  if( !aRootObj )
-    return;
-
-  DataObjectList aList;
-  aRootObj->children( aList );
-  QListIterator<SUIT_DataObject*> anIter( aList );
-  while( anIter.hasNext() )
-    removeChild( aRootObj, anIter.next() );
+  // create a new root object
+  CAM_DataObject* aNewRootObj = new CAM_DataObject();
 
   Handle(HYDROData_Document) aDocument = HYDROData_Document::Document( theStudyId );
   if( aDocument.IsNull() )
@@ -234,34 +231,34 @@ void HYDROGUI_DataModel::update( const int theStudyId )
   // Create root objects:
 
   // IMAGES
-  LightApp_DataObject* anImageRootObj = createObject( aRootObj, tr( partitionName( KIND_IMAGE ).toAscii() ) );
+  LightApp_DataObject* anImageRootObj = createObject( aNewRootObj, tr( partitionName( KIND_IMAGE ).toAscii() ) );
 
   // BATHYMETRY
-  LightApp_DataObject* aBathymetryRootObj = createObject( aRootObj, tr( partitionName( KIND_BATHYMETRY ).toAscii() ) );
+  LightApp_DataObject* aBathymetryRootObj = createObject( aNewRootObj, tr( partitionName( KIND_BATHYMETRY ).toAscii() ) );
 
   // ARTIFICIAL OBJECTS
-  LightApp_DataObject* anArtificialObjectsRootObj = createObject( aRootObj, tr( partitionName( KIND_ARTIFICIAL_OBJECT ).toAscii() ) );
+  LightApp_DataObject* anArtificialObjectsRootObj = createObject( aNewRootObj, tr( partitionName( KIND_ARTIFICIAL_OBJECT ).toAscii() ) );
 
   // NATURAL OBJECTS
-  LightApp_DataObject* aNaturalObjectsRootObj = createObject( aRootObj, tr( partitionName( KIND_NATURAL_OBJECT ).toAscii() ) );
+  LightApp_DataObject* aNaturalObjectsRootObj = createObject( aNewRootObj, tr( partitionName( KIND_NATURAL_OBJECT ).toAscii() ) );
 
   // OBSTACLES
-  LightApp_DataObject* anObstaclesRootObj = createObject( aRootObj, tr( partitionName( KIND_OBSTACLE ).toAscii() ) );
+  LightApp_DataObject* anObstaclesRootObj = createObject( aNewRootObj, tr( partitionName( KIND_OBSTACLE ).toAscii() ) );
 
   // CALCULATION CASES
-  LightApp_DataObject* aCalculRootObj = createObject( aRootObj, tr( partitionName( KIND_CALCULATION ).toAscii() ) );
+  LightApp_DataObject* aCalculRootObj = createObject( aNewRootObj, tr( partitionName( KIND_CALCULATION ).toAscii() ) );
 
   // POLYLINES
-  LightApp_DataObject* aPolylineRootObj = createObject( aRootObj, tr( partitionName( KIND_POLYLINEXY ).toAscii() ) );
+  LightApp_DataObject* aPolylineRootObj = createObject( aNewRootObj, tr( partitionName( KIND_POLYLINEXY ).toAscii() ) );
 
   // POLYLINES
-  LightApp_DataObject* aPolyline3DRootObj = createObject( aRootObj, tr( partitionName( KIND_POLYLINE ).toAscii() ) );
+  LightApp_DataObject* aPolyline3DRootObj = createObject( aNewRootObj, tr( partitionName( KIND_POLYLINE ).toAscii() ) );
 
   // PROFILES
-  LightApp_DataObject* aProfileRootObj = createObject( aRootObj, tr( partitionName( KIND_PROFILE ).toAscii() ) );
+  LightApp_DataObject* aProfileRootObj = createObject( aNewRootObj, tr( partitionName( KIND_PROFILE ).toAscii() ) );
 
   // VISUAL STATES
-  LightApp_DataObject* aVisualStateRootObj = createObject( aRootObj, tr( partitionName( KIND_VISUAL_STATE ).toAscii() ) );
+  LightApp_DataObject* aVisualStateRootObj = createObject( aNewRootObj, tr( partitionName( KIND_VISUAL_STATE ).toAscii() ) );
 
   HYDROData_Iterator anIterator( aDocument, KIND_UNKNOWN );
   for( ; anIterator.More(); anIterator.Next() ) {
@@ -404,11 +401,18 @@ void HYDROGUI_DataModel::update( const int theStudyId )
     }
   }
 
-  if( SUIT_DataBrowser* anObjectBrowser = anApp->objectBrowser() )
-  {
-    anObjectBrowser->setAutoOpenLevel( 3 );
-    anObjectBrowser->openLevels();
-  }
+  //if( SUIT_DataBrowser* anObjectBrowser = anApp->objectBrowser() )
+  //{
+  //  anObjectBrowser->setAutoOpenLevel( 3 );
+  //  anObjectBrowser->openLevels();
+  //}
+
+  HYDROGUI_DataModelSync aSync( aNewRootObj );
+  SUIT_DataObject* aRoot = root();
+  if( !aRoot )
+    aRoot = createRootModuleObject( aStudyRoot );
+  ::synchronize < suitPtr, suitPtr, HYDROGUI_DataModelSync >
+    ( aNewRootObj, aRoot, aSync );
 }
 
 HYDROGUI_DataObject* HYDROGUI_DataModel::getDataObject( const Handle(HYDROData_Entity)& theModelObject )
@@ -438,7 +442,8 @@ void HYDROGUI_DataModel::update( LightApp_DataObject* theObject,
 
 CAM_DataObject* HYDROGUI_DataModel::createRootModuleObject( SUIT_DataObject* theParent )
 {
-  CAM_DataObject* aRootObj = createModuleObject( theParent );
+  CAM_ModuleObject* aRootObj = createModuleObject( theParent );
+  aRootObj->setDataModel( this );
   setRoot( aRootObj );
   return aRootObj;
 }
@@ -540,21 +545,25 @@ bool HYDROGUI_DataModel::redo()
 bool HYDROGUI_DataModel::canCopy()
 {
   HYDROData_SequenceOfObjects aSeq = HYDROGUI_Tool::GetSelectedObjects( (HYDROGUI_Module*)module() );
-  if( aSeq.Length() != 1 )
-    return false;
-
-  Handle(HYDROData_Entity) anObject = aSeq.First();
-  if( anObject.IsNull() )
-    return false;
-
-  ObjectKind aKind = anObject->GetKind();
-  if( aKind == KIND_IMAGE ||
-      aKind == KIND_POLYLINE ||
-      aKind == KIND_PROFILE ||
-      aKind == KIND_CALCULATION )
-    return true;
+  bool isCanCopy = !aSeq.IsEmpty();
 
-  return false;
+  for ( Standard_Integer anIndex = 1, aLength = aSeq.Length(); anIndex <= aLength; anIndex++ ) {
+    Handle(HYDROData_Entity) anObject = aSeq.Value( anIndex );
+    if( !anObject.IsNull() ) {
+      ObjectKind aKind = anObject->GetKind();
+      bool isUnrecognized = aKind <= KIND_UNKNOWN || aKind > KIND_LAST;
+      bool isChildObject = aKind == KIND_DUMMY_3D || 
+                           aKind == KIND_ZONE ||
+                           aKind == KIND_SHAPES_GROUP || 
+                           aKind == KIND_SPLITTED_GROUP;
+      if ( isUnrecognized || isChildObject ) {
+        isCanCopy = false;
+        break;
+      }
+    }
+  }
+  
+  return isCanCopy;
 }
 
 bool HYDROGUI_DataModel::canPaste()
@@ -590,6 +599,9 @@ bool HYDROGUI_DataModel::paste()
         anObject->CopyTo( aClone );
         anIsChanged = true;
 
+        // remove Z layer
+        aClone->RemoveZLevel();
+        
         // generate a new unique name for the clone object:
         // case 1: Image_1 -> Image_2
         // case 2: ImageObj -> ImageObj_1
@@ -661,11 +673,12 @@ LightApp_DataObject* HYDROGUI_DataModel::createObject( SUIT_DataObject*
 LightApp_DataObject* HYDROGUI_DataModel::buildObject( SUIT_DataObject*     theParent,
                                                       HYDROGUI_DataObject* theObject,
                                                       const QString&       theParentEntry,
-                                                      const bool           theIsBuildTree )
+                                                      const bool           theIsBuildTree,
+                                                      const bool           theIsInOperation )
 {
   if ( theIsBuildTree )
   {
-    buildObjectTree( theParent, theObject, theParentEntry );
+    buildObjectTree( theParent, theObject, theParentEntry, theIsInOperation );
   }
   return theObject;
 }
@@ -673,17 +686,21 @@ LightApp_DataObject* HYDROGUI_DataModel::buildObject( SUIT_DataObject*     thePa
 LightApp_DataObject* HYDROGUI_DataModel::createZone( SUIT_DataObject*       theParent,
                                                      Handle(HYDROData_Zone) theModelObject,
                                                      const QString&         theParentEntry,
-                                                     const bool             theIsBuildTree )
+                                                     const bool             theIsBuildTree,
+                                                     const bool             theIsInOperation )
 {
-  return buildObject( theParent, new HYDROGUI_Zone( theParent, theModelObject, theParentEntry ), theParentEntry, theIsBuildTree );
+  return buildObject( theParent, new HYDROGUI_Zone( theParent, theModelObject, theParentEntry, theIsInOperation ), 
+    theParentEntry, theIsBuildTree, theIsInOperation );
 }
 
 LightApp_DataObject* HYDROGUI_DataModel::createRegion( SUIT_DataObject*         theParent,
                                                        Handle(HYDROData_Region) theModelObject,
                                                        const QString&           theParentEntry,
-                                                       const bool               theIsBuildTree )
+                                                       const bool               theIsBuildTree,
+                                                       const bool               theIsInOperation )
 {
-  return buildObject( theParent, new HYDROGUI_Region( theParent, theModelObject, theParentEntry ), theParentEntry, theIsBuildTree );
+  return buildObject( theParent, new HYDROGUI_Region( theParent, theModelObject, theParentEntry, theIsInOperation ), 
+    theParentEntry, theIsBuildTree, theIsInOperation );
 }
 
 LightApp_DataObject* HYDROGUI_DataModel::createObject( SUIT_DataObject* theParent,
@@ -693,9 +710,34 @@ LightApp_DataObject* HYDROGUI_DataModel::createObject( SUIT_DataObject* theParen
   return new HYDROGUI_NamedObject( theParent, theName, theParentEntry );
 }
 
+void HYDROGUI_DataModel::buildObjectPartition( SUIT_DataObject*                   theObject,
+                                               const HYDROData_SequenceOfObjects& theObjects,
+                                               const QString&                     thePartName,
+                                               const bool                         theIsCreateEmpty )
+{
+  if ( theObjects.IsEmpty() && !theIsCreateEmpty )
+    return;
+
+  HYDROGUI_DataObject* aGuiObj = dynamic_cast<HYDROGUI_DataObject*>( theObject );
+  if ( !aGuiObj )
+    return;
+
+  LightApp_DataObject* aPartSect = 
+    createObject( aGuiObj, thePartName, aGuiObj->entry() );
+
+  HYDROData_SequenceOfObjects::Iterator anIter( theObjects );
+  for ( ; anIter.More(); anIter.Next() )
+  {
+    Handle(HYDROData_Entity) anObj = anIter.Value();
+    if( !anObj.IsNull() && !anObj->IsRemoved() )
+      createObject( aPartSect, anObj, aGuiObj->entry(), false );
+  }
+}
+
 void HYDROGUI_DataModel::buildObjectTree( SUIT_DataObject* theParent,
                                           SUIT_DataObject* theObject,
-                                          const QString&   theParentEntry )
+                                          const QString&   theParentEntry,
+                                          const bool       theIsInOperation )
 {
   HYDROGUI_DataObject* aGuiObj = dynamic_cast<HYDROGUI_DataObject*>( theObject );
   if ( !aGuiObj )
@@ -705,6 +747,21 @@ void HYDROGUI_DataModel::buildObjectTree( SUIT_DataObject* theParent,
   if ( aDataObj.IsNull() )
     return;
 
+  if ( aDataObj->IsKind( STANDARD_TYPE(HYDROData_Object) ) )
+  {
+    Handle(HYDROData_Object) aGeomObj =
+      Handle(HYDROData_Object)::DownCast( aDataObj );
+
+    Handle(HYDROData_DummyObject3D) anObject3D = aGeomObj->GetObject3D();
+    if ( !anObject3D.IsNull() )
+      createObject( aGuiObj, anObject3D, "", false );
+
+#ifdef DEB_GROUPS
+    HYDROData_SequenceOfObjects anObjGroups = aGeomObj->GetGroups();
+    buildObjectPartition( aGuiObj, anObjGroups, tr( "OBJECT_GROUPS" ), false );
+#endif
+  }
+
   ObjectKind anObjectKind = aDataObj->GetKind();
 
   if ( anObjectKind == KIND_IMAGE )
@@ -733,15 +790,83 @@ void HYDROGUI_DataModel::buildObjectTree( SUIT_DataObject* theParent,
     LightApp_DataObject* aBathSect = 
       createObject( aGuiObj, tr( "ZONE_BATHYMETRY" ), aGuiObj->entry() );
 
-    Handle(HYDROData_Bathymetry) aBathymetry = aZoneObj->GetBathymetry();
-    if ( !aBathymetry.IsNull() && !aBathymetry->IsRemoved() )
-      createObject( aBathSect, aBathymetry, aGuiObj->entry(), false );
+    Handle(HYDROData_IAltitudeObject) anAltitudeObj = aZoneObj->GetAltitudeObject();
+    if ( !anAltitudeObj.IsNull() && !anAltitudeObj->IsRemoved() )
+      createObject( aBathSect, anAltitudeObj, aGuiObj->entry(), false );
+  }
+  else if ( anObjectKind == KIND_POLYLINE )
+  {
+    Handle(HYDROData_Polyline3D) aPolyline3D =
+      Handle(HYDROData_Polyline3D)::DownCast( aDataObj );
+
+    LightApp_DataObject* aPolylineSect = 
+      createObject( aGuiObj, tr( "POLYLINE3D_POLYLINE" ), aGuiObj->entry() );
+
+    Handle(HYDROData_PolylineXY) aPolylineXY = aPolyline3D->GetPolylineXY();
+    if ( !aPolylineXY.IsNull() && !aPolylineXY->IsRemoved() )
+      createObject( aPolylineSect, aPolylineXY, aGuiObj->entry(), false );
+
+    LightApp_DataObject* aProfileSect = 
+      createObject( aGuiObj, tr( "POLYLINE3D_PROFILE" ), aGuiObj->entry() );
+
+    Handle(HYDROData_ProfileUZ) aProfileUZ = aPolyline3D->GetProfileUZ();
+    if ( aProfileUZ.IsNull() || aProfileUZ->IsRemoved() )
+      aProfileUZ = aPolyline3D->GetChildProfileUZ( false );
+
+    if ( !aProfileUZ.IsNull() && !aProfileUZ->IsRemoved() )
+    {
+      Handle(HYDROData_Profile) aProfile = 
+        Handle(HYDROData_Profile)::DownCast( aProfileUZ->GetFatherObject() );
+      if ( !aProfile.IsNull() && !aProfile->IsRemoved() )
+        createObject( aProfileSect, aProfile, aGuiObj->entry(), false );
+    }
+
+    LightApp_DataObject* aBathSect = 
+      createObject( aGuiObj, tr( "POLYLINE3D_BATHYMETRY" ), aGuiObj->entry() );
+
+    Handle(HYDROData_IAltitudeObject) anAltitudeObj = aPolyline3D->GetAltitudeObject();
+    if ( !anAltitudeObj.IsNull() && !anAltitudeObj->IsRemoved() )
+      createObject( aBathSect, anAltitudeObj, aGuiObj->entry(), false );
   }
   else if ( anObjectKind == KIND_CALCULATION )
   {
     Handle(HYDROData_CalculationCase) aCaseObj =
       Handle(HYDROData_CalculationCase)::DownCast( aDataObj );
 
+    LightApp_DataObject* aPolylineSect = 
+      createObject( aGuiObj, tr( "CASE_BOUNDARY" ), aGuiObj->entry() );
+
+    Handle(HYDROData_PolylineXY) aPolyline = aCaseObj->GetBoundaryPolyline();
+    if ( !aPolyline.IsNull() && !aPolyline->IsRemoved() )
+      createObject( aPolylineSect, aPolyline, aGuiObj->entry(), false );
+
+    LightApp_DataObject* aCaseAOSect = 
+      createObject( aGuiObj, tr( partitionName( KIND_ARTIFICIAL_OBJECT ).toAscii() ),
+                    aGuiObj->entry() );
+    LightApp_DataObject* aCaseNOSect = 
+      createObject( aGuiObj, tr( partitionName( KIND_NATURAL_OBJECT ).toAscii() ),
+                    aGuiObj->entry() );
+
+    HYDROData_SequenceOfObjects aSeq = aCaseObj->GetGeometryObjects();
+    HYDROData_SequenceOfObjects::Iterator aGOIter( aSeq );
+    Handle(HYDROData_Entity) anEntity;
+    Handle(HYDROData_ArtificialObject) anAObject;
+    Handle(HYDROData_NaturalObject) aNObject;
+    for ( ; aGOIter.More(); aGOIter.Next() )
+    {
+      anEntity = aGOIter.Value();
+      if ( anEntity.IsNull() )
+        continue;
+      anAObject = Handle(HYDROData_ArtificialObject)::DownCast( anEntity );
+      if ( !anAObject.IsNull() )
+        createObject( aCaseAOSect, anAObject, aGuiObj->entry(), false );
+      else
+      {
+        aNObject = Handle(HYDROData_NaturalObject)::DownCast( anEntity );
+        if ( !aNObject.IsNull() )
+          createObject( aCaseNOSect, aNObject, aGuiObj->entry(), false );
+      }
+    }
     LightApp_DataObject* aCaseRegionsSect = 
       createObject( aGuiObj, tr( "CASE_REGIONS" ), aGuiObj->entry() );
 
@@ -752,8 +877,17 @@ void HYDROGUI_DataModel::buildObjectTree( SUIT_DataObject* theParent,
       Handle(HYDROData_Region) aCaseRegion =
         Handle(HYDROData_Region)::DownCast( anIter.Value() );
       if( !aCaseRegion.IsNull() && !aCaseRegion->IsRemoved() )
-        createRegion( aCaseRegionsSect, aCaseRegion, "", true );
+        createRegion( aCaseRegionsSect, aCaseRegion, "", true, theIsInOperation );
     }
+
+#ifdef DEB_GROUPS
+    HYDROData_SequenceOfObjects aCalcGroups = aCaseObj->GetGeometryGroups();
+    buildObjectPartition( aGuiObj, aCalcGroups, tr( "OBJECT_GROUPS" ), false );
+
+    HYDROData_SequenceOfObjects aCalcSplitGroups = aCaseObj->GetSplittedGroups();
+    buildObjectPartition( aGuiObj, aCalcSplitGroups, tr( "CASE_SPLITTED_GROUPS" ), false );
+#endif
+
   }
   else if ( anObjectKind == KIND_REGION )
   {
@@ -767,7 +901,7 @@ void HYDROGUI_DataModel::buildObjectTree( SUIT_DataObject* theParent,
       Handle(HYDROData_Zone) aRegionZone =
         Handle(HYDROData_Zone)::DownCast( anIter.Value() );
       if( !aRegionZone.IsNull() && !aRegionZone->IsRemoved() )
-        createZone( aGuiObj, aRegionZone, "", true );
+        createZone( aGuiObj, aRegionZone, "", true, theIsInOperation );
     }
   }
   else if ( anObjectKind == KIND_PROFILE )
@@ -777,13 +911,57 @@ void HYDROGUI_DataModel::buildObjectTree( SUIT_DataObject* theParent,
 
     aGuiObj->setIsValid( aProfileObj->IsValid() );
   }
+  else if ( anObjectKind == KIND_CHANNEL || anObjectKind == KIND_DIGUE )
+  {
+    Handle(HYDROData_Channel) aChannelObj =
+      Handle(HYDROData_Channel)::DownCast( aDataObj );
+
+    LightApp_DataObject* aGuideLineSect = 
+      createObject( aGuiObj, tr( "CHANNEL_GUIDE_LINE" ), aGuiObj->entry() );
+    Handle(HYDROData_Polyline3D) aGuideLine = aChannelObj->GetGuideLine();
+    if ( !aGuideLine.IsNull() && !aGuideLine->IsRemoved() ) {
+      createObject( aGuideLineSect, aGuideLine, aGuiObj->entry(), false );
+    }
+
+    LightApp_DataObject* aProfileSect = 
+      createObject( aGuiObj, tr( "CHANNEL_PROFILE" ), aGuiObj->entry() );
+    Handle(HYDROData_Profile) aProfile = aChannelObj->GetProfile();
+    if ( !aProfile.IsNull() && !aProfile->IsRemoved() ) {
+      createObject( aProfileSect, aProfile, aGuiObj->entry(), false );
+    }
+  }
+  else if ( anObjectKind == KIND_STREAM )
+  {
+    Handle(HYDROData_Stream) aStreamObj =
+      Handle(HYDROData_Stream)::DownCast( aDataObj );
+
+    LightApp_DataObject* aHydraulicAxisSect = 
+      createObject( aGuiObj, tr( "STREAM_HYDRAULIC_AXIS" ), aGuiObj->entry() );
+    Handle(HYDROData_PolylineXY) aHydraulicAxis = aStreamObj->GetHydraulicAxis();
+    if ( !aHydraulicAxis.IsNull() && !aHydraulicAxis->IsRemoved() ) {
+      createObject( aHydraulicAxisSect, aHydraulicAxis, aGuiObj->entry(), false );
+    }
+
+    HYDROData_SequenceOfObjects aProfiles = aStreamObj->GetProfiles();
+    buildObjectPartition( aGuiObj, aProfiles, tr( "STREAM_PROFILES" ), true );
+  }
 }
 
 void HYDROGUI_DataModel::buildCaseTree( SUIT_DataObject* theParent, Handle(HYDROData_CalculationCase) theCase )
 {
   if ( !theCase.IsNull() )
   {
-    new HYDROGUI_DropTargetObject( theParent, tr( "NEW_REGION" ), "" );
+    if ( theParent )
+    {
+      // Remove previous objects tree
+        DataObjectList aList;
+        theParent->children( aList );
+        QListIterator<SUIT_DataObject*> anIter( aList );
+        while( anIter.hasNext() )
+          removeChild( theParent, anIter.next() );
+    }
+
+    new HYDROGUI_DropTargetObject( theParent, tr( "NEW_REGION" ), "", true );
 
     HYDROData_SequenceOfObjects aCaseRegions = theCase->GetRegions();
     HYDROData_SequenceOfObjects::Iterator anIter( aCaseRegions );
@@ -792,7 +970,43 @@ void HYDROGUI_DataModel::buildCaseTree( SUIT_DataObject* theParent, Handle(HYDRO
       Handle(HYDROData_Region) aCaseRegion =
         Handle(HYDROData_Region)::DownCast( anIter.Value() );
       if( !aCaseRegion.IsNull() && !aCaseRegion->IsRemoved() )
-        createRegion( theParent, aCaseRegion, "", true );
+        createRegion( theParent, aCaseRegion, "", true, true );
+    }
+  }
+}
+
+void HYDROGUI_DataModel::updateObjectTree( Handle(HYDROData_Entity)& theObj )
+{
+  if ( !theObj.IsNull() )
+  {
+    HYDROGUI_DataObject* aGuiObj = dynamic_cast<HYDROGUI_DataObject*>(
+      findObject( HYDROGUI_DataObject::dataObjectEntry( theObj ) ) );
+    if ( aGuiObj )
+    {
+      // Remove previous objects tree
+      DataObjectList aList;
+      aGuiObj->children( aList );
+      QListIterator<SUIT_DataObject*> anIter( aList );
+      while( anIter.hasNext() )
+        removeChild( aGuiObj, anIter.next() );
+
+      // Rebuild the subtree
+      QString aParentEntry;
+      HYDROGUI_DataObject* aParent = dynamic_cast<HYDROGUI_DataObject*>( aGuiObj->parent() );
+      if ( aParent )
+      {
+        aParentEntry = aParent->entry();
+      }
+      buildObjectTree( aParent, aGuiObj, aParentEntry, aGuiObj->isInOperation() );
+    } 
+    else
+    {
+      // workaround for the bug in SalomeApp_Study::findObjectByEntry - it can't find LightApp_DataObjects
+      HYDROGUI_Module* aModule = dynamic_cast<HYDROGUI_Module*>( module() );
+      if( aModule )
+      {
+        aModule->getApp()->updateObjectBrowser();
+      }
     }
   }
 }