From 191539f7b2d4bc9a0c4eeede602df23305cdf5fd Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Mon, 6 Jul 2009 10:32:57 +0000
Subject: [PATCH] Fix SUGSEGV on desktop closing if Sweep window is open

---
 src/VISUGUI/VisuGUI_Tools.cxx | 44 +++++++++++++++++------------------
 1 file changed, 22 insertions(+), 22 deletions(-)

diff --git a/src/VISUGUI/VisuGUI_Tools.cxx b/src/VISUGUI/VisuGUI_Tools.cxx
index 9d150f1b..0060ee78 100644
--- a/src/VISUGUI/VisuGUI_Tools.cxx
+++ b/src/VISUGUI/VisuGUI_Tools.cxx
@@ -86,38 +86,36 @@ namespace VISU
   SUIT_Desktop*
   GetDesktop(const CAM_Module* theModule)
   {
-    return theModule->application()->desktop();
+    return theModule && theModule->application() ? theModule->application()->desktop() : 0;
   }
 
   //------------------------------------------------------------
   LightApp_SelectionMgr*
   GetSelectionMgr(const SalomeApp_Module* theModule)
   {
-    return theModule->getApp()->selectionMgr();
+    return theModule && theModule->getApp() ? theModule->getApp()->selectionMgr() : 0;
   }
 
   //------------------------------------------------------------
   SalomeApp_Study*
   GetAppStudy(const CAM_Module* theModule)
   {
-    return
-      dynamic_cast<SalomeApp_Study*>(theModule->application()->activeStudy());
+    return theModule && theModule->application() ? 
+      dynamic_cast<SalomeApp_Study*>(theModule->application()->activeStudy()) : 0;
   }
 
   //------------------------------------------------------------
   _PTR(Study)
   GetCStudy(const SalomeApp_Study* theStudy)
   {
-    return theStudy->studyDS();
+    return theStudy ? theStudy->studyDS() : _PTR(Study)();
   }
 
   //------------------------------------------------------------
   bool
   IsStudyLocked( _PTR(Study) theStudy )
   {
-    if( theStudy )
-      return theStudy->GetProperties()->IsLocked();
-    return true;
+    return theStudy ? theStudy->GetProperties()->IsLocked() : true;
   }
 
   //------------------------------------------------------------
@@ -256,23 +254,25 @@ namespace VISU
     TSelectionInfo aSelectionInfo;
     const SalomeApp_Study* aStudy = GetAppStudy(theModule);
     LightApp_SelectionMgr* aSelectionMgr = GetSelectionMgr(theModule);
-    SALOME_ListIO aListIO;
-    aSelectionMgr->selectedObjects(aListIO);
-    SALOME_ListIteratorOfListIO anIter(aListIO);
-    while(anIter.More())
-    {
-      Handle(SALOME_InteractiveObject) anIO = anIter.Value();
-      if(anIO->hasEntry())
+    if ( aStudy && aSelectionMgr ) {
+      SALOME_ListIO aListIO;
+      aSelectionMgr->selectedObjects(aListIO);
+      SALOME_ListIteratorOfListIO anIter(aListIO);
+      while(anIter.More())
       {
-        TObjectInfo anObjectInfo = GetObjectByEntry(aStudy, anIO->getEntry());
-	if(anObjectInfo.mySObject){
-	  TSelectionItem aSelectionItem;
-	  aSelectionItem.myObjectInfo = anObjectInfo;
-	  aSelectionItem.myIO = anIO;
-	  aSelectionInfo.push_back(aSelectionItem);
+	Handle(SALOME_InteractiveObject) anIO = anIter.Value();
+	if(anIO->hasEntry())
+	{
+	  TObjectInfo anObjectInfo = GetObjectByEntry(aStudy, anIO->getEntry());
+	  if(anObjectInfo.mySObject){
+	    TSelectionItem aSelectionItem;
+	    aSelectionItem.myObjectInfo = anObjectInfo;
+	    aSelectionItem.myIO = anIO;
+	    aSelectionInfo.push_back(aSelectionItem);
+	  }
 	}
+	anIter.Next(); // MULTIPR fixed
       }
-      anIter.Next(); // MULTIPR fixed
     }
     return aSelectionInfo;
   }
-- 
2.39.2