Improved hide / show functionality of dock widgets

src/DockContainerWidget.cpp

@@ -497,6 +497,7 @@ void CDockContainerWidget::removeDockArea(CDockAreaWidget* area)
 	area->setParent(0);
 	if (!(Splitter && Splitter->count() == 1))
 	{
+		emit dockAreasRemoved();
 		return;
 	}
 
@@ -586,6 +587,7 @@ void CDockContainerWidget::dropFloatingWidget(CFloatingDockContainer* FloatingWi
 	}
 }
 
+
 } // namespace ads
 
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