ArcPy Add-in – Refreshing Combobox of Python Add-in in ArcPy

arcgis-10.1arcpycombo-boxpython-addin

I need to refresh the value in the combobox after an event from other tool in the same add-in (ARCGIS 10.1. Python).

I've changed the value of the combobox with the code:

combobox.value = val

and I want to show it in the combobox but I can't refresh this combobox after give a value in other tool.

Best Answer

As documented in the help, use the .refresh() method:

combobox.value = val
combobox.refresh()

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[GIS] Clearing Combobox in Python Addin

So, just to follow up on what Luke said, I created (see below) a very simple example that makes a pull-down of current map layers, which can be easily modified to list something else and act on the selection.

The workaround mentioned executes with onEnter so that the last selected val is reset in the combobox. Some comments and print statements left in for your further testing convenience.

I added code (a button class, as you specified) that 'clears' the value of the combobox. The 'refresh' function is called in the button class from the combobox class - that's an important distinction, why I chose to add to the code (refresh is called 'internally' by the combobox class as well as 'externally' by the button class).

import arcpy
import pythonaddins

class ButtonClass7(object):
    """Implementation for testNonEditCombo_addin.button (Button)"""
    def __init__(self):
        self.enabled = True
        self.checked = False
    def onClick(self):
        combobox.value = ''
        combobox.refresh()

class ComboBoxClass1(object):
    """Implementation for testNonEditCombo_addin.combobox (ComboBox)"""

    def __init__(self):
        self.editable = True
        self.enabled = True
        # introducing global
        global staticVal
        self.newfunction()
        self.value = staticVal = self.items[0]

    def onSelChange(self, selection):
        # redefining global
        global staticVal
        self.value = staticVal = selection
        print 'selection: {0}'.format(selection)

    def onEditChange(self, text):
        # I toyed with this function but decided not to use it in this example.
        pass

    def onFocus(self, focused):
        # if any layers are added/removed from the TOC, the list is refreshed.
        if focused: self.newfunction()

    def onEnter(self):
        self.value = staticVal
        print 'self.refresh...so did the refresh function fire?'
        self.refresh()

    def refresh(self):
        arcpy.RefreshActiveView()
        print 'refreshed...'

    def newfunction(self):
        self.mxd = arcpy.mapping.MapDocument('current')
        self.items = [lyr.name for lyr in arcpy.mapping.ListLayers(self.mxd)]

Best Answer

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