# PowerTable Item Listener **URL:** \ **Category:** Ignition\ **Tags:** ignition81, vision, scripting\ **Created:** [August 5, 2023, 4:16pm UTC](https://forum.inductiveautomation.com/t/powertable-item-listener/77490 "2023-08-05T16:16:47Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![ademovicemir](https://avatars.discourse-cdn.com/v4/letter/a/bbce88/32.png) [@ademovicemir](https://forum.inductiveautomation.com/u/ademovicemir)\ **Post date:** [August 5, 2023, 4:16pm UTC](https://forum.inductiveautomation.com/t/powertable-item-listener/77490/1 "2023-08-05T16:16:47Z")
I'm running Ignition 8.1.26 and am having some trouble with an Item Listener on the configureEditor extension function on the Power Table. I'm looking to get a drop down component in the cells of the specified column which I'm able to do. I'm using the PMIComboBox instead of a JComboBox because I'd like to use a dataset in the PMIComboBox and get other column values within that dataset based on the user selection. The code that I have is working but the itemStateChanged in the listener part is firing 2 times on a single selection. The code is below and any direction or assistance is greatly appreciated. Thank you. ```auto def configureEditor(self, colIndex, colName): from javax.swing import AbstractCellEditor,JComboBox, JTextField from javax.swing.table import TableCellEditor from java.awt.event import ItemListener, ItemEvent from com.inductiveautomation.factorypmi.application.components import PMIComboBox myData = self.adhTest # custom property dataset ### Construct a custom Item Listener ## class custItemListener(ItemListener): def __init__ (self, table, value, rowIndex, colIndex): self.table = table self.rowIndex = rowIndex self.colIndex = colIndex self.value = value def itemStateChanged(self, event): if event.getStateChange() == ItemEvent.SELECTED: ### Process any necessary changes on state change event ### # get the selected item newValue = event.getItem() print "itemStateChange newValue",newValue # update the dataset with the new value newData = system.dataset.setValue(self.table.data, self.rowIndex, self.colIndex, newValue) self.table.data = newData ### For testing set the same value to column index 2 # occurs when event is fired. newData = system.dataset.setValue(self.table.data, self.rowIndex, 2, newValue) self.table.data = newData # print the updated value print 'item state change',self.table.data.getValueAt(self.rowIndex, 2) # stop the cell edit on the table if it's being edited. tableCellEditStatus = self.table.getTable().isEditing() # if cell edit is in process stop the cell editing. if tableCellEditStatus == True: self.table.getTable().getCellEditor().stopCellEditing() # create and use the myTableCellEditor class to access the JTable/Jide Table cell editor # and configure the cell editor based on specific conditions class myTableCellEditor(TableCellEditor, AbstractCellEditor): # construct the class def __init__ (self, tableComponent): self.table= tableComponent self.editor = None def getTableCellEditorComponent(self, table, value, isSelected, rowIndex, colIndex): rowVal = self.table.data.getValueAt(rowIndex,0) displayDD = 0 # this is a flag that will indicate to display the dropdown # if column index is 0, set the drop down options if colIndex == 0: # set the ddOptions to data self.ddOptions = myData # set a drop down display flag: 0 - hide, 1 - display displayDD = 1 # if it's ok to display the drop down, set the editor # set the editor as PMIComboBox with the ddOptions as a parameter if displayDD == 1: self.editor = PMIComboBox() self.editor.setData(myData) #set the data for the drop down self.editor.setEditable(False) # if edit is allowed True else False ddSelIndex = self.editor.getSelectedIndex() self.editor.setSelectedValue(ddSelIndex) # add the item listener self.editor.addItemListener(custItemListener(self.table, value, rowIndex, colIndex)) # else set None as the editor else: self.editor = None return self.editor def getCellEditorValue(self): if self.editor.selectedValue > -1: if self.editor.getSelectedIndex() > -1: # this method gets the editor value(s) for the comboBox and print them newValue = self.editor.getSelectedItem() # selected Item newLabel = self.editor.getSelectedLabel() # selected Label newObj = self.editor.getSelectedObjects() # selected Object (Array) newSelValue = self.editor.getSelectedValue() # selectedValue newSelStrValue = self.editor.getSelectedStringValue() # selected String Value newIndex = self.editor.getSelectedIndex() # selected Index adhValue = self.editor.data.getValueAt(newIndex,2) # value at specified column at specified index in the ds else: newValue = '