use message passing

Change-Id: Idc5fbdcd6d1a11b7607995c1d492ffc829879566
Reviewed-on: https://gerrit.libreoffice.org/33718Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Björn Michaelsen <bjoern.michaelsen@canonical.com>

sw/inc/frmfmt.hxx

@@ -256,6 +256,7 @@ namespace sw
 {
     enum class DrawFrameFormatHintId {
         DYING,
+        DYING_FLYFRAMEFORMAT, /* possibly can be merged with DYING, if all client handle it and handle it the same */
         PREPPASTING,
         PREP_INSERT_FLY,
         PREP_DELETE_FLY,

sw/source/core/draw/dcontact.cxx

@@ -590,6 +590,17 @@ void SwFlyDrawContact::SwClientNotify(const SwModify& rMod, const SfxHint& rHint
         if (pFormat && pFormat->Which() == RES_FLYFRMFMT && !pFormat->getIDocumentLayoutAccess().GetCurrentViewShell())
             pGetZOrdnerHint->m_rnZOrder = GetMaster()->GetOrdNum();
     }
+    else if (auto pDrawFrameFormatHint = dynamic_cast<const sw::DrawFrameFormatHint*>(&rHint))
+    {
+        switch(pDrawFrameFormatHint->m_eId)
+        {
+            case sw::DrawFrameFormatHintId::DYING_FLYFRAMEFORMAT:
+                delete this;
+                break;
+            default:
+                ;
+        }
+    }
 }
 
 // SwDrawContact
@@ -1528,7 +1539,7 @@ void SwDrawContact::SwClientNotify(const SwModify& rMod, const SfxHint& rHint)
                 GetAnchoredObj(GetMaster())->MakeObjPos();
                 break;
             default:
-                SAL_WARN("sw.core", "unhandled DrawFrameFormatHintId");
+                ;
         }
     }
     else if (auto pCheckDrawFrameFormatLayerHint = dynamic_cast<const sw::CheckDrawFrameFormatLayerHint*>(&rHint))

sw/source/core/layout/atrfrm.cxx

@@ -2877,12 +2877,8 @@ SwFlyFrameFormat::~SwFlyFrameFormat()
         } while( nullptr != ( pLast = aIter.Next() ));
 
     SwIterator<SwFlyDrawContact,SwFormat> a2ndIter( *this );
-    SwFlyDrawContact* pC = a2ndIter.First();
-    if( pC )
-        do {
-                delete pC;
 
-        } while( nullptr != ( pC = a2ndIter.Next() ));
+    CallSwClientNotify(sw::DrawFrameFormatHint(sw::DrawFrameFormatHintId::DYING_FLYFRAMEFORMAT));
 }
 
 /// Creates the Frames if the format describes a paragraph-bound frame.