refs #550: fix crash when myObject is NULL

[modules/hydro.git] / src / HYDROGUI / HYDROGUI_DeleteOp.cxx

diff --git a/src/HYDROGUI/HYDROGUI_DeleteOp.cxx b/src/HYDROGUI/HYDROGUI_DeleteOp.cxx
index 83372230525666d4519d3f2fb188997e1ff0568a..8a85237954bf2078226d85a6eef5001eac94f329 100644 (file)
--- a/src/HYDROGUI/HYDROGUI_DeleteOp.cxx
+++ b/src/HYDROGUI/HYDROGUI_DeleteOp.cxx
@@ -1,12 +1,8 @@
-// Copyright (C) 2007-2013  CEA/DEN, EDF R&D, OPEN CASCADE
-//
-// Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
-// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
-//
+// Copyright (C) 2014-2015  EDF-R&D
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
 // License as published by the Free Software Foundation; either
-// version 2.1 of the License.
+// version 2.1 of the License, or (at your option) any later version.
 //
 // This library is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -22,20 +18,17 @@
 
 #include "HYDROGUI_DeleteOp.h"
 
-#include "HYDROGUI_DataModel.h"
+#include "HYDROGUI_DeleteDlg.h"
 #include "HYDROGUI_Module.h"
-#include "HYDROGUI_Operations.h"
+#include "HYDROGUI_Tool.h"
 #include "HYDROGUI_UpdateFlags.h"
 
-#include <HYDROData_Iterator.h>
 #include <HYDROData_Object.h>
 
 #include <LightApp_Application.h>
-#include <LightApp_DataOwner.h>
 
 #include <SUIT_Desktop.h>
 #include <SUIT_MessageBox.h>
-#include <SUIT_SelectionMgr.h>
 
 HYDROGUI_DeleteOp::HYDROGUI_DeleteOp( HYDROGUI_Module* theModule )
 : HYDROGUI_Operation( theModule )
@@ -51,36 +44,91 @@ void HYDROGUI_DeleteOp::startOperation()
 {
   HYDROGUI_Operation::startOperation();
 
-  HYDROGUI_DataModel* aModel = module()->getDataModel();
+  HYDROData_SequenceOfObjects aSeq = HYDROGUI_Tool::GetSelectedObjects( module() );
+  if( aSeq.IsEmpty() )
+  {
+    abort();
+    return;
+  }
 
-  SUIT_SelectionMgr* aSelectionMgr = selectionMgr();
-  SUIT_DataOwnerPtrList anOwners;
-  aSelectionMgr->selected( anOwners );
+  bool anIsCanRemove = true;
 
-  if( !anOwners.isEmpty() )
+  QStringList anObjNames;
+  for( Standard_Integer anIndex = 1, aLength = aSeq.Length(); anIndex <= aLength; anIndex++ )
   {
-    int anAnswer = SUIT_MessageBox::question( module()->getApp()->desktop(),
-                                              tr( "DELETE_OBJECTS" ),
-                                              tr( "CONFIRM_DELETION" ),
-                                              QMessageBox::Yes | QMessageBox::No,
-                                              QMessageBox::No );
-    if( anAnswer == QMessageBox::No )
+    Handle(HYDROData_Entity) anObject = aSeq.Value( anIndex );
+    if( anObject.IsNull() )
+      continue;
+
+    if ( !anObject->CanRemove() )
     {
-      abort();
-      return;
+      anIsCanRemove = false;
+      break;
     }
+
+    anObjNames.append( anObject->GetName() );
   }
 
-  foreach( SUIT_DataOwner* aSUITOwner, anOwners )
+  if ( !anIsCanRemove )
   {
-    if( LightApp_DataOwner* anOwner = dynamic_cast<LightApp_DataOwner*>( aSUITOwner ) )
+    SUIT_MessageBox::critical( module()->getApp()->desktop(),
+                               tr( "DELETE_OBJECTS" ), tr( "DELETE_OBJECTS_IMPOSIBLE" ) );
+    abort();
+    return;
+  }
+
+  anObjNames.removeDuplicates();
+
+  // check the back-references
+  QMap<QString,HYDROData_SequenceOfObjects> aBackObjects =
+    HYDROGUI_Tool::GetObjectsBackReferences( module(), anObjNames );
+
+  QMap<QString,HYDROData_SequenceOfObjects>::const_iterator anIt = aBackObjects.begin(),
+                                                            aLast = aBackObjects.end();
+  QStringList aRefList;
+  for ( ; anIt != aLast; anIt++ ) {
+    QStringList aSeqList;
+    HYDROData_SequenceOfObjects::Iterator anIter( anIt.value() );
+    for ( ; anIter.More(); anIter.Next() )
     {
-      Handle(HYDROData_Object) anObject = aModel->objectByEntry( anOwner->entry() );
-      if( !anObject.IsNull() )
-        anObject->Remove();
+      Handle(HYDROData_Entity) anEntity = anIter.Value();
+      if ( anEntity.IsNull() )
+        continue;
+      aSeqList.append( QString( tr( "DELETE_OBJECT_NAME" ) ).arg( anEntity->GetName() ) );
     }
+    aRefList.append( QString( tr( "DELETE_OBJECT_IS_USED_FOR" ) ).arg( anIt.key() )
+                                                          .arg( aSeqList.join( ", " ) ) );
   }
 
-  module()->update( UF_Model | UF_Viewer );
+  //QString aNamesList = anObjNames.join( "\n" );
+  if ( !aBackObjects.isEmpty() )
+  {
+    SUIT_MessageBox::critical( module()->getApp()->desktop(),
+                               tr( "DELETE_OBJECTS" ),
+                               tr( "DELETED_OBJECTS_HAS_BACKREFERENCES" ).arg( aRefList.join( "\n" ) ) );
+    abort();
+    return;
+  }
+
+  HYDROGUI_DeleteDlg aDeleteDlg( module()->getApp()->desktop() );
+  aDeleteDlg.setObjectsToRemove( anObjNames );
+  if ( aDeleteDlg.exec() != HYDROGUI_DeleteDlg::Accepted )
+  {
+    abort();
+    return;
+  }
+
+  startDocOperation();
+
+  for( Standard_Integer anIndex = 1, aLength = aSeq.Length(); anIndex <= aLength; anIndex++ )
+  {
+    Handle(HYDROData_Entity) anObject = aSeq.Value( anIndex );
+    if ( !anObject.IsNull() && !anObject->IsRemoved() )
+      anObject->Remove();
+  }
+
+  commitDocOperation();
+
+  module()->update( UF_Model | UF_Viewer | UF_OCCViewer | UF_VTKViewer );
   commit();
 }