Ignore FocusIn events for clients which were unmapped by kwin

but had got focus shortly before. Otherwise quick switching between
two virtual desktops with Konsoles can result in demand attention
state.

svn path=/trunk/kdebase/kwin/; revision=295169

activation.cpp

@@ -403,6 +403,7 @@ void Workspace::gotFocusIn( const Client* c )
       // but didn't for some reason (and also won't anymore, because they were sooner)
         while( should_get_focus.first() != c )
             should_get_focus.pop_front();
+        should_get_focus.pop_front(); // remove 'c'
         }
     }
 

events.cpp

@@ -1309,6 +1309,8 @@ void Client::focusInEvent( XFocusInEvent* e )
         return; // we don't care
     if ( e->detail == NotifyPointer )
         return;  // we don't care
+    if( !isShown( false ) || !isOnCurrentDesktop()) // we unmapped it, but it got focus meanwhile ->
+        return;            // activateNextClient() already transferred focus elsewhere
     // check if this client is in should_get_focus list or if activation is allowed
     bool activate =  workspace()->allowClientActivation( this, -1U, true );
     workspace()->gotFocusIn( this ); // remove from should_get_focus list