From 765c6d70b46e05c73ae0cb23ab4eab4215138a34 Mon Sep 17 00:00:00 2001
From: mzn <mzn@opencascade.com>
Date: Thu, 25 Jun 2015 09:23:41 +0300
Subject: [PATCH] refs #602: show the special error message when export case
 with no submersible regions.

---
 src/HYDROData/HYDROData_CalculationCase.cxx   | 23 +++++++++++++++----
 src/HYDROData/HYDROData_CalculationCase.h     |  5 +++-
 src/HYDROGUI/HYDROGUI_ExportCalculationOp.cxx |  3 ++-
 3 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/src/HYDROData/HYDROData_CalculationCase.cxx b/src/HYDROData/HYDROData_CalculationCase.cxx
index 8027835c..6f607c48 100644
--- a/src/HYDROData/HYDROData_CalculationCase.cxx
+++ b/src/HYDROData/HYDROData_CalculationCase.cxx
@@ -1027,14 +1027,15 @@ QString HYDROData_CalculationCase::Export( int theStudyId ) const
   GEOM::GEOM_Gen_var aGEOMEngine = HYDROData_GeomTool::GetGeomGen();
   SALOMEDS::Study_var aDSStudy = HYDROData_GeomTool::GetStudyByID( theStudyId );
   
-  QString aGeomObjEntry;
-  bool isOK = Export( aGEOMEngine, aDSStudy, aGeomObjEntry );
+  QString aGeomObjEntry, anErrorMsg;
+  bool isOK = Export( aGEOMEngine, aDSStudy, aGeomObjEntry, anErrorMsg );
   return isOK ? aGeomObjEntry : QString();
 }
 
 bool HYDROData_CalculationCase::Export( GEOM::GEOM_Gen_var  theGeomEngine,
                                         SALOMEDS::Study_ptr theStudy,
-                                        QString& theGeomObjEntry ) const
+                                        QString& theGeomObjEntry,
+                                        QString& theErrorMsg ) const
 {
   HYDROData_ShapesGroup::SeqOfGroupsDefs aSeqOfGroupsDefs;
 
@@ -1059,6 +1060,7 @@ bool HYDROData_CalculationCase::Export( GEOM::GEOM_Gen_var  theGeomEngine,
   }
   
   // Get faces
+  bool isAllNotSubmersible = true;
   TopTools_ListOfShape aFaces;
   HYDROData_SequenceOfObjects aCaseRegions = GetRegions( false );
   HYDROData_SequenceOfObjects::Iterator aRegionIter( aCaseRegions );
@@ -1068,12 +1070,25 @@ bool HYDROData_CalculationCase::Export( GEOM::GEOM_Gen_var  theGeomEngine,
       Handle(HYDROData_Region)::DownCast( aRegionIter.Value() );
     if( aRegion.IsNull() || !aRegion->IsSubmersible() )
       continue;
+    
+    if ( isAllNotSubmersible )
+      isAllNotSubmersible = false;
 
     TopoDS_Shape aRegionShape = aRegion->GetShape( &aSeqOfGroupsDefs );
     aFaces.Append( aRegionShape );
   }
 
-  return Export( theGeomEngine, theStudy, aFaces, aSeqOfGroupsDefs, theGeomObjEntry );
+  bool aRes = false;
+
+  if ( aCaseRegions.IsEmpty() ) {
+    theErrorMsg = QString("the list of regions is empty.");
+  } else if ( isAllNotSubmersible ) {
+    theErrorMsg = QString("there are no submersible regions.");
+  } else {
+    aRes = Export( theGeomEngine, theStudy, aFaces, aSeqOfGroupsDefs, theGeomObjEntry );;
+  }
+
+  return aRes;
 }
 
 bool HYDROData_CalculationCase::Export( GEOM::GEOM_Gen_var                            theGeomEngine,
diff --git a/src/HYDROData/HYDROData_CalculationCase.h b/src/HYDROData/HYDROData_CalculationCase.h
index 0dd025ed..43b0d14e 100644
--- a/src/HYDROData/HYDROData_CalculationCase.h
+++ b/src/HYDROData/HYDROData_CalculationCase.h
@@ -297,11 +297,14 @@ public:
    * Exports the calculation case data (shell and groups) to GEOM module.
    * \param theGeomEngine GEOM module engine
    * \param theStudy SALOMEDS study, is used for publishing of GEOM objects
+   * \param theGeomObjEntry the published GEOM object entry
+   * \param theErrorMsg the error message
    * \return true in case of success
    */
   HYDRODATA_EXPORT virtual bool Export( GEOM::GEOM_Gen_var  theGeomEngine,
                                         SALOMEDS::Study_ptr theStudy,
-                                        QString& theGeomObjEntry ) const;
+                                        QString& theGeomObjEntry,
+                                        QString& theErrorMsg ) const;
 
 public:      
   // Public methods to work with Calculation services
diff --git a/src/HYDROGUI/HYDROGUI_ExportCalculationOp.cxx b/src/HYDROGUI/HYDROGUI_ExportCalculationOp.cxx
index 4ee70734..c911f1d0 100644
--- a/src/HYDROGUI/HYDROGUI_ExportCalculationOp.cxx
+++ b/src/HYDROGUI/HYDROGUI_ExportCalculationOp.cxx
@@ -84,11 +84,12 @@ bool HYDROGUI_ExportCalculationOp::processApply( int& theUpdateFlags,
     dynamic_cast<SalomeApp_Study*>( module()->getApp()->activeStudy() );
 
   // Export
+  QString anErrorMsg;
   if ( aStudy ) {
     SALOMEDS::Study_var aDSStudy = GeometryGUI::ClientStudyToStudy( aStudy->studyDS() );
     GEOM::GEOM_Gen_var aGeomEngine = GeometryGUI::GetGeomGen();
     QString anEntry;
-    if ( aCalculation->Export( aGeomEngine, aDSStudy, anEntry ) ) {
+    if ( aCalculation->Export( aGeomEngine, aDSStudy, anEntry, theErrorMsg ) ) {
       theUpdateFlags = UF_ObjBrowser;
       isOk = true;
     }
-- 
2.39.2