Adds an action for the inputed dataset to the toolbar
        
        :param      dataset | <XChartDataset>

def _addDatasetAction(self, dataset):
        """
        Adds an action for the inputed dataset to the toolbar
        
        :param      dataset | <XChartDataset>
        """
        # create the toolbar action
        action = QAction(dataset.name(), self)
        action.setIcon(XColorIcon(dataset.color()))
        action.setCheckable(True)
        action.setChecked(True)
        action.setData(wrapVariant(dataset))
        action.toggled.connect(self.toggleDataset)
        
        self.uiDatasetTBAR.addAction(action)