Returns the chart type for this item.  If no type is explicitely set,
        then the scenes chart type will be utilized.
        
        :return     <XChartScene.Type>

def chartType( self ):
        """
        Returns the chart type for this item.  If no type is explicitely set,
        then the scenes chart type will be utilized.
        
        :return     <XChartScene.Type>
        """
        if ( self._chartType ):
            return self._chartType
        
        scene = self.scene()
        if ( not scene ):
            return 0
        
        return scene.chartType()