namespace
{
	class ItemDelegate
		: public Wt::WItemDelegate
	{
	public:
		ItemDelegate()
			: Wt::WItemDelegate()
		{}
		virtual Wt::WWidget *update( Wt::WWidget *widget, const Wt::WModelIndex& index, Wt::WFlags< Wt::ViewItemRenderFlag > flags ) override
		{
			auto w = Wt::WItemDelegate::update( widget, index, flags );
			if( auto interactWidget = dynamic_cast< Wt::WInteractWidget* >( w ) )
				interactWidget->mouseWentUp().connect( [](...){ Wt::WMessageBox::show( "Ok", "signal mouseWentUp fired", Wt::Ok ); } );
			return w;
		}
	};
	class TestEmptyHeaderClicked
		: public Wt::WApplication
	{
	public:
		TestEmptyHeaderClicked( const Wt::WEnvironment& env )
			: Wt::WApplication( env )
			{
			auto tableView	= new Wt::WTableView();
			auto model		= new Wt::WStandardItemModel();
			tableView->setModel( model );
			tableView->setHeaderItemDelegate( new ItemDelegate() );
			model->appendRow
				({	new Wt::WStandardItem( "std::string( \"Header\"	)"	)
				,	new Wt::WStandardItem( "std::string( \"X\"		)"	) 
				,	new Wt::WStandardItem( "std::string( \" \"		)"	)
				,	new Wt::WStandardItem( "std::string( \"\"		)"	)
				});
			model->setHeaderData( 0, boost::any( std::string( "Header"	) ) );
			model->setHeaderData( 1, boost::any( std::string( "X"		) ) );
			model->setHeaderData( 2, boost::any( std::string( " "		) ) );
			model->setHeaderData( 3, boost::any( std::string( ""		) ) );
			root()->addWidget( tableView );
		}
	};
}