Avoid crashes during shutdown.

svn path=/trunk/KDE/kdebase/workspace/; revision=662929

deleted.cpp

@@ -47,11 +47,16 @@ void Deleted::copyToDeleted( Toplevel* c )
         cinfo->disable();
     }
 
-void Deleted::unrefWindow()
+void Deleted::unrefWindow( bool delay )
     {
     if( --delete_refcount > 0 )
         return;
-    deleteLater();
+    // needs to be delayed when calling from effects, otherwise it'd be rather
+    // complicated to handle the case of the window going away during a painting pass
+    if( delay )
+        deleteLater();
+    else
+        delete this;
     }
 
 int Deleted::desktop() const

deleted.h

@@ -24,7 +24,7 @@ class Deleted
         static Deleted* create( Toplevel* c );
         // used by effects to keep the window around for e.g. fadeout effects when it's destroyed
         void refWindow();
-        void unrefWindow();
+        void unrefWindow( bool delay = false );
         virtual int desktop() const;
     protected:
         virtual void debug( kdbgstream& stream ) const;

effects.cpp

@@ -791,7 +791,7 @@ void EffectWindowImpl::refWindow()
 void EffectWindowImpl::unrefWindow()
     {
     if( Deleted* d = dynamic_cast< Deleted* >( toplevel ))
-        return d->unrefWindow();
+        return d->unrefWindow( true ); // delayed
     abort(); // TODO
     }
 

main.cpp

@@ -153,6 +153,7 @@ Application::~Application()
 
 void Application::lostSelection()
     {
+    sendPostedEvents();
     delete Workspace::self();
     // remove windowmanager privileges
     XSelectInput(display(), rootWindow(), PropertyChangeMask );