Returns the chart items that are found within this scene.
        
        :return     [<XChartWidgetItem>, ..]

def chartItems(self):
        """
        Returns the chart items that are found within this scene.
        
        :return     [<XChartWidgetItem>, ..]
        """
        from projexui.widgets.xchartwidget import XChartWidgetItem
        return filter(lambda x: isinstance(x, XChartWidgetItem), self.items())