tdf#118443 - Presenter Console

"Next" button disabled with the last slide

Change-Id: Iebb7c46b9838f5372cb68c51daa41d114309d613
Reviewed-on: https://gerrit.libreoffice.org/59642
Tested-by: Jenkins
Reviewed-by: Heiko Tietze <tietze.heiko@gmail.com>

sdext/source/presenter/PresenterProtocolHandler.cxx

@@ -83,6 +83,7 @@ namespace {
         explicit GotoNextEffectCommand (
             const rtl::Reference<PresenterController>& rpPresenterController);
         virtual void Execute() override;
+        virtual bool IsEnabled() const override;
     private:
         rtl::Reference<PresenterController> mpPresenterController;
     };
@@ -538,6 +539,18 @@ void GotoNextEffectCommand::Execute()
     mpPresenterController->GetSlideShowController()->gotoNextEffect();
 }
 
+bool GotoNextEffectCommand::IsEnabled() const
+{
+    if ( ! mpPresenterController.is())
+        return false;
+
+    if ( ! mpPresenterController->GetSlideShowController().is())
+        return false;
+
+   return ( mpPresenterController->GetSlideShowController()->getNextSlideIndex() < mpPresenterController->GetSlideShowController()->getSlideCount() );
+
+}
+
 //===== GotoNextSlide =========================================================
 
 GotoNextSlideCommand::GotoNextSlideCommand (