Reset python add-in

Question

I have a toolbar which enables a second and third combobox when a selection is made on the previous. I would like to add a button to 'reset' the toolbar. Basically reload the toolbar to it's original load state. Any thoughts?

Code follows:

import arcpy
import pythonaddins
layer = arcpy.mapping.ListLayers(arcpy.mapping.MapDocument("CURRENT"))[0]
arcpy.SelectLayerByAttribute_management(layer,"CLEAR_SELECTION")
arcpy.RefreshActiveView()
class Survey(object):
 """Implementation for DatabaseSearch_addin.combobox1 (ComboBox)"""
 def __init__(self):
 #in the initialisation of the addin
 self.items = []
 self.editable = True
 self.enabled = True
 self.dropdownWidth = 'WWWWWW'
 self.width = 'WWWWWW'
 #set the map document reference
 mxd = arcpy.mapping.MapDocument("CURRENT")
 df = arcpy.mapping.ListDataFrames(mxd)[0]
 layer = arcpy.mapping.ListLayers(mxd)[0]
 # check if the layer exists
 if layer:
 #create a column name variable for the search cursor parameters
 column_BlockNo = "L1SURNAM"
 sc = arcpy.SearchCursor(layer,""""L1SURNAM" <> ' '""","",column_BlockNo,column_BlockNo)
 #Due to the multiple values stored in the attribute table a dictionary had to be used
 #Create a dictionary
 dictionary = {}
 #for loop to iterate through the attribute tables getting the values for the column
 for row in sc:
 #set the value as the row value in the column block number
 val = row.getValue(column_BlockNo)
 #the nature of dictionaries does not allow for duplicates thus handling the redundant block numbers in the data table for use in the combobox
 dictionary[val] = val
 #create a list of items for the dictionary's unique keys to be written to
 Items = []
 #for loop to iterate through the keys in the dictionary
 for key in dictionary.iterkeys():
 #append the key values to the list Items
 Items.append(key)
 #append the list of keys to the Blocknumber(self) item list
 self.items.append(key)
 #sort keys in ascending numeric order
 self.items.sort()
 del row
 del sc
 def onSelChange(self, selection):
 mxd = arcpy.mapping.MapDocument("CURRENT")
 df = arcpy.mapping.ListDataFrames(mxd)[0]
 layer = arcpy.mapping.ListLayers(mxd)[0]
 arcpy.SelectLayerByAttribute_management(layer,"NEW_SELECTION","L1SURNAM = '" + selection + "'")
 df.zoomToSelectedFeatures()
 arcpy.RefreshActiveView()
 #if the layer exists
 dictionary = {}
 if layer:
 #empty the lot number item list
 combobox2.items = []
 #create a variable for the lot number
 column_Lot = "L2BLOCK"
 #create a search cursor for the layer on the lot number field selecting all the values that are not an empty string
 sc = arcpy.SearchCursor(layer,""""L2BLOCK" <> ' '""","",column_Lot,column_Lot)
 #for loop to read through the values in the lot number field
 for row in sc:
 #set the value as the row value in the column block number
 val = row.getValue(column_Lot)
 #the nature of dictionaries does not allow for duplicates thus handling the redundant block numbers in the data table for use in the combobox
 dictionary[val] = val
 #create a list of items for the dictionary's unique keys to be written to
 #for loop to iterate through the keys in the dictionary
 for key in dictionary.iterkeys():
 #append the key values to the list Items
 combobox2.items.append(key)
 combobox2.items.sort()
 #append the list of keys to the Blocknumber(self) item list
 combobox2.enabled = True
 del row
 del sc
 def onEditChange(self, text):
 #create a variable to store the text in for the selection tool
 SurNam = text
 mxd = arcpy.mapping.MapDocument("CURRENT")
 df = arcpy.mapping.ListDataFrames(mxd)[0]
 layer = arcpy.mapping.ListLayers(mxd)[0]
 arcpy.SelectLayerByAttribute_management(layer,"NEW_SELECTION","L1SURNAM = '" + SurNam + "'")
 df.zoomToSelectedFeatures()
class Block(object):
 """Implementation for DatabaseSearch_addin.combobox2 (ComboBox)"""
 def __init__(self):
 self.items = []
 self.editable = True
 self.enabled = False
 self.dropdownWidth = 'WWWWWW'
 self.width = 'WWWWWW'
 def onSelChange(self, selection):
 #set the map document reference
 mxd = arcpy.mapping.MapDocument("CURRENT")
 df = arcpy.mapping.ListDataFrames(mxd)[0]
 layer = arcpy.mapping.ListLayers(mxd)[0]
 arcpy.SelectLayerByAttribute_management(layer,"SUBSET_SELECTION","L2BLOCK = '" + selection + "'")
 df.zoomToSelectedFeatures()
 arcpy.RefreshActiveView()
 dictionary = {}
 if layer:
 #empty the lot number item list
 combobox3.items = []
 #create a variable for the lot number
 column_Sur = "L3SURNUM"
 sc = arcpy.SearchCursor(layer,""""L3SURNUM" <> ' '""","",column_Sur,column_Sur)
 #for loop to read through the values in the lot number field
 for row in sc:
 #set the value as the row value in the column block number
 val = row.getValue(column_Sur)
 #the nature of dictionaries does not allow for duplicates thus handling the redundant block numbers in the data table for use in the combobox
 dictionary[val] = val
 #create a list of items for the dictionary's unique keys to be written to
 #for loop to iterate through the keys in the dictionary
 for key in dictionary.iterkeys():
 #append the key values to the list Items
 combobox3.items.append(key)
 combobox3.items.sort()
 #append the list of keys to the Blocknumber(self) item list
 combobox3.enabled = True
 del row
 del sc
 def onEditChange(self, text):
 blockNum = text
 mxd = arcpy.mapping.MapDocument("CURRENT")
 df = arcpy.mapping.ListDataFrames(mxd)[0]
 layer = arcpy.mapping.ListLayers(mxd)[0]
 arcpy.SelectLayerByAttribute_management(layer,"SUBSET_SELECTION","L2BLOCK = '" + blockNum + "'")
 df.zoomToSelectedFeatures()
class Section(object):
 """Implementation for DatabaseSearch_addin.combobox3 (ComboBox)"""
 def __init__(self):
 self.items = []
 self.editable = True
 #only activated when survey name is populated
 self.enabled = False
 self.dropdownWidth = 'WWWWWW'
 self.width = 'WWWWWW'
 def onSelChange(self, selection):
 mxd = arcpy.mapping.MapDocument("CURRENT")
 df = arcpy.mapping.ListDataFrames(mxd)[0]
 layer = arcpy.mapping.ListLayers(mxd)[0]
 arcpy.SelectLayerByAttribute_management(layer,"SUBSET_SELECTION","L3SURNUM = '" + selection + "'")
 df.zoomToSelectedFeatures()
 arcpy.RefreshActiveView()
class Rest(object):
 """Implementation for DatabaseSearch_addin.button3 (Button)"""
 def __init__(self):
 self.enabled = True
 self.checked = False
 def onClick(self):
 arcpy.SelectLayerByAttribute_management(layer,"CLEAR_SELECTION")
 combobox2.items()
 combobox2.enabled = False
 combobox3.items() 
 combobox3.enabled = False
 arcpy.RefreshActiveView()

• Fezter: Could you post your code?
• Fezter: Could the reset button delete the other comboboxes? Effectively resetting it?
• wtgeographer: I aim to have the reset button clear clear the 2nd and 3rd combobox and reload the first (original state). Here is what have. Thanks for the response! I am providing link to code... I was having trouble posting code to this site? First timer:) forums.arcgis.com/threads/76912-Reset-Python-Add-in @Fezter
• Fezter: I added your code to the question.
• wtgeographer: Thanks @Fezter Any thoughts about a solution?

Answer 1

I think your only option here is to create a custom global function in which you pass in the toolID as a parameter and then assign a default value to that tool in order to reset it.

I haven't tested this and am just writing it off the top of my head, but it should nudge you in the right direction:

def resetTool(toolID, defaultValue):
 toolID.value = defaultValue

Then on your reset button, simply call that method in your onClick method

class Rest(object):
 """Implementation for DatabaseSearch_addin.button3 (Button)"""
 def __init__(self):
 self.enabled = True
 self.checked = False
 def onClick(self):
 arcpy.SelectLayerByAttribute_management(layer,"CLEAR_SELECTION")
 self.resetTool(combobox2, "")
 combobox2.enabled = False
 self.resetTool(combobox3, "")
 combobox3.enabled = False
 arcpy.RefreshActiveView()