Can anybody tell me why the second combo box (subset selection) does not become enabled in python add-in?
Here is a picture and code...
Attachment 21258
Here is a picture and code...
Attachment 21258
Code:
import arcpy
import pythonaddins
#Clear any Selections there may be on the Document before it is opened
#set the layer variable to the first layer in the map document(coded inline with layer)
layer = arcpy.mapping.ListLayers(arcpy.mapping.MapDocument("CURRENT"))[0]
# Select the layer to clear any Current selection on the map
arcpy.SelectLayerByAttribute_management(layer,"CLEAR_SELECTION")
#refresh the active view of the map document
arcpy.RefreshActiveView()
class Survey(object):
"""Implementation for MapperTest_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")
#set the dataframe reference using the map document and the first data frame in the list
df = arcpy.mapping.ListDataFrames(mxd)[0]
#set the layer reference using the map document reference and the first layer in the list of layers
layer = arcpy.mapping.ListLayers(mxd)[0]
# check if the layer exists
if layer:
#create a column name variable for the search cursor parameters
column_Survey = "L1SURNAM"
#create a search cursor for the survey name field
sc = arcpy.SearchCursor(layer,""""L1SURNAM" <> ' '""","",column_Survey,column_Survey)
#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 Survey
val = row.getValue(column_Survey)
#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 Survey(self) item list
self.items.append(key)
#sort keys in ascending numeric order
self.items.sort()
#delete row variable
del row
#delete search cursor
del sc
def onSelChange(self, selection):
#set the map document reference
mxd = arcpy.mapping.MapDocument("CURRENT")
#set the dataframe reference using the map document and the first data frame in the list
df = arcpy.mapping.ListDataFrames(mxd)[0]
#set the layer reference using the map document reference and the first layer in the list of layers
layer = arcpy.mapping.ListLayers(mxd)[0]
#Use the select by attributed tool to create a new selection of the survey based on the selection in the combobox
arcpy.SelectLayerByAttribute_management(layer,"NEW_SELECTION","L1SURNAM = '" + selection + "'")
#zoom to the selected features in the dataframe
df.zoomToSelectedFeatures()
#refresh the active view
arcpy.RefreshActiveView()
#if the layer exists
if layer:
#empty the block number item list
Block.items = []
#create a variable for the block number
column_Block = "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_Block,column_Block)
#for loop to read through the values in the block number field
for row in sc:
#append the lot number items to the block number item list
LotNumber.items.append(row.getValue(column_Block))
#once a selection is made the block number box becomes active
Block.enabled = True
#delete row variable
del row
#delete rsearch cursor
del sc
def onEditChange(self, text):
#create a variable to store the text in for the selection tool
surNam = text
#set the map document reference
mxd = arcpy.mapping.MapDocument("CURRENT")
#set the dataframe reference using the map document and the first data frame in the list
df = arcpy.mapping.ListDataFrames(mxd)[0]
#set the layer reference using the map document reference and the first layer in the list of layers
layer = arcpy.mapping.ListLayers(mxd)[0]
#Selection tool used to select the values in the layer where the survey name is the value that is typed into the combo box
arcpy.SelectLayerByAttribute_management(layer,"NEW_SELECTION","L1SURNAM = '" + surNam + "'")
#Zoom to the selected features
df.zoomToSelectedFeatures()
def onFocus(self, focused):
pass
def onEnter(self):
pass
def refresh(self):
pass
class Block(object):
"""Implementation for MapperTest_addin.combobox2 (ComboBox)"""
def __init__(self):
self.items = []
self.editable = True
#only activated when block number is populated
self.enabled = False
self.dropdownWidth = 'WWWWWW'
self.width = 'WWWWWW'
def onSelChange(self, selection):
blockNum = selection
#set the map document reference
mxd = arcpy.mapping.MapDocument("CURRENT")
#set the dataframe reference using the map document and the first data frame in the list
df = arcpy.mapping.ListDataFrames(mxd)[0]
#set the layer reference using the map document reference and the first layer in the list of layers
layer = arcpy.mapping.ListLayers(mxd)[0]
#select a subset from the selected fields of blocknumber
arcpy.SelectLayerByAttribute_management(layer,"SUBSET_SELECTION","L2BLOCK = '" + blockNum + "'")
df.zoomToSelectedFeatures()
arcpy.RefreshActiveView()
def onEditChange(self, text):
pass
def onFocus(self, focused):
pass
def onEnter(self):
pass
def refresh(self):
pass
