0027285: Visualization - selection of AIS_MultipleConnectedInteractive is broken

- method SelectMgr_SelectableObject::HasSelection became virtual, unnecessary variable was removed;
- redefined HasSelection method for multiple connected interactives;
- AIS_InteractiveContext::AddOrRemoveSelected was corrected to use global selection owner;
- test case for issue #27285

src/AIS/AIS_InteractiveContext_1.cxx

@@ -1035,14 +1035,7 @@ void AIS_InteractiveContext::AddOrRemoveSelected (const Handle(AIS_InteractiveOb
   if (!theObject->HasInteractiveContext())
     theObject->SetContext (this);
 
-  const Handle(SelectMgr_Selection)& aSel = theObject->Selection (aGlobalSelMode);
-
-  if (aSel->IsEmpty())
-    return;
-
-  aSel->Init();
-  const Handle(SelectMgr_EntityOwner) anOwner =
-    Handle(SelectMgr_EntityOwner)::DownCast (aSel->Sensitive()->BaseSensitive()->OwnerId());
+  const Handle(SelectMgr_EntityOwner) anOwner = theObject->GlobalSelOwner();
 
   if (anOwner.IsNull() || !anOwner->HasSelectable())
     return;

src/AIS/AIS_MultipleConnectedInteractive.cxx

@@ -402,3 +402,22 @@ Handle(SelectMgr_EntityOwner) AIS_MultipleConnectedInteractive::GlobalSelOwner()
 {
   return myAssemblyOwner;
 }
+
+//=======================================================================
+//function : HasSelection
+//purpose  :
+//=======================================================================
+Standard_Boolean AIS_MultipleConnectedInteractive::HasSelection (const Standard_Integer theMode) const
+{
+  for (PrsMgr_ListOfPresentableObjectsIter anIter (Children()); anIter.More(); anIter.Next())
+  {
+    Handle(AIS_InteractiveObject) aChild = Handle(AIS_InteractiveObject)::DownCast (anIter.Value());
+    if (aChild.IsNull())
+      continue;
+
+    if (!aChild->HasSelection (theMode))
+      return Standard_False;
+  }
+
+  return Standard_True;
+}

src/AIS/AIS_MultipleConnectedInteractive.hxx

@@ -99,6 +99,9 @@ public:
   //! Returns the owner of mode for selection of object as a whole
   Standard_EXPORT virtual Handle(SelectMgr_EntityOwner) GlobalSelOwner() const Standard_OVERRIDE;
 
+  //! Returns true if a selection corresponding to the selection mode theMode was computed for all
+  //! children of multiple connected interactive object.
+  Standard_EXPORT virtual Standard_Boolean HasSelection (const Standard_Integer theMode) const Standard_OVERRIDE;
 
   DEFINE_STANDARD_RTTIEXT(AIS_MultipleConnectedInteractive,AIS_InteractiveObject)
 

src/SelectMgr/SelectMgr_SelectableObject.cxx

@@ -71,18 +71,16 @@ SelectMgr_SelectableObject::SelectMgr_SelectableObject (const PrsMgr_TypeOfPrese
 
 
 //==================================================
-// Function: 
+// Function: HasSelection
 // Purpose :
 //==================================================
-
-Standard_Boolean SelectMgr_SelectableObject
-::HasSelection(const Standard_Integer aMode) const
+Standard_Boolean SelectMgr_SelectableObject::HasSelection (const Standard_Integer theMode) const
 {
-  Standard_Boolean Found=Standard_False;
-  for (Standard_Integer I=1;I<= myselections.Length() && !Found;I++)
-    { if(((myselections.Value(I))->Mode())==aMode) 
-        return Standard_True;
-    }
+  for (Standard_Integer aSelIdx = 1; aSelIdx <= myselections.Length(); ++aSelIdx)
+  {
+    if (((myselections.Value (aSelIdx))->Mode()) == theMode)
+      return Standard_True;
+  }
   return Standard_False;
 }
 

src/SelectMgr/SelectMgr_SelectableObject.hxx

@@ -95,8 +95,8 @@ public:
   Standard_EXPORT const Handle(SelectMgr_Selection)& Selection (const Standard_Integer aMode) const;
   
   //! Returns true if a selection corresponding to the
-  //! selection mode aMode is present in this framework.
-  Standard_EXPORT Standard_Boolean HasSelection (const Standard_Integer aMode) const;
+  //! selection mode theMode was computed for this object.
+  Standard_EXPORT virtual Standard_Boolean HasSelection (const Standard_Integer theMode) const;
   
   //! Begins the iteration scanning for sensitive primitives.
     void Init();

tests/bugs/vis/bug27285

@@ -0,0 +1,32 @@
+puts "========"
+puts "OCC27285"
+puts "========"
+puts ""
+##################################################################
+puts "Visualization - selection of AIS_MultipleConnectedInteractive is broken"
+##################################################################
+
+pload VISUALIZATION MODELING
+
+vinit
+vsetdispmode 1
+
+box b 100 100 100
+vdisplay b
+
+vconnect bc 0 0 300 b
+
+vfit
+
+vchangeselected b
+vchangeselected bc
+
+if {[vnbselected] != "2"} {
+  puts "ERROR: only one object is selected"
+}
+
+if {[string match *Selected* [vstate bc]] != "1"} {
+  puts "ERROR: multiple connected interactive object is not selected"
+}
+
+set only_screen 1