Combo box string as input for a button

Question

I built a python addin for Arcmap and I need to print a folder path to a combo box, which should be a destination folder to copy my *.gdb file.

enter image description here

After a click on a "Backup" button this tool should copy my file to a folder on the right. But still I don't know how to figure that out. The only thing I can see is to read the last thing in Arcmap's python window and probably set it as input for a button.

enter image description here

But still have no idea even how to perform it.

EDIT:

I was changing only lines in python script, config.xml was made by default. Here is a piece of code:

import arcpy
import pythonaddins
class Backup(object):
 """Implementation for BackupServer_addin.Backup (Button)"""
 def __init__(self):
 self.enabled = True
 self.checked = False
 def onClick(self):
 if "" in BackupServer_addin.Folder.self.items:
 print self.items
class Folder(object):
 """Implementation for BackupServer_addin.Folder (ComboBox)"""
 def __init__(self):
 self.items = [""]
 self.editable = True
 self.enabled = True
 self.dropdownWidth = 'WWWWWW'
 self.width = 'WWWWWW'
 def onSelChange(self, selection):
 print "New Selection:",selection
 def onEditChange(self, text):
 print "Edit Change:",text
 def onFocus(self, focused):
 pass
 def onEnter(self):
 print "Current Value:",self.value
 def refresh(self):
 pass

This string is just a try to make a reference to the Folder combobox if "" in BackupServer_addin.Folder.self.items:

Here are the contents of config.xml:

<ESRI.Configuration xmlns="http://schemas.esri.com/Desktop/AddIns" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Name>Python Addin</Name><AddInID>{413e6443-7e28-43e0-832a-33730a790ca4}</AddInID><Description>New Addin</Description><Version>0.1</Version><Image /><Author>Untitled</Author><Company>Untitled</Company><Date>02/03/2017</Date><Targets><Target name="Desktop" version="10.2" /></Targets><AddIn language="PYTHON" library="BackupServer_addin.py" namespace="BackupServer_addin"><ArcMap>
 <Commands>
 <Button caption="Backup" category="Python Addin" class="Backup" id="BackupServer_addin.Backup" image="Images\backup.png" message="Backup" tip="Backup"><Help heading="Backup">Backup</Help></Button>
 <ComboBox caption="Folder" category="Python Addin" class="Folder" id="BackupServer_addin.Folder" itemSizeString="WWWWWW" message="Folder" rows="4" sizeString="WWWWWW" tip="Folder"><Help heading="Folder">Folder</Help></ComboBox>
 </Commands>
 <Extensions>
 </Extensions>
 <Toolbars>
 <Toolbar caption="Toolbar" category="Python Addin" id="BackupServer_addin.toolbar" showInitially="true"><Items><Button refID="BackupServer_addin.Backup" /><ComboBox refID="BackupServer_addin.Folder" /></Items></Toolbar>
 </Toolbars>
 <Menus>
 </Menus>
 </ArcMap></AddIn></ESRI.Configuration>

• PolyGeo: What does your code to do what you describe look like? i.e. both the config.xml and your Python script.
• Pavel Pereverzev: @PolyGeo updated the question
• PolyGeo: Can you include the config.xml too, please?
• Pavel Pereverzev: @PolyGeo updated

Answer 1

Just found a solution: making of global parameter and putting it firstly into combo box parameters and then to button's:

Combobox:

class FolderPath(object):
 """Implementation for BackupPlus_addin.FolderPath (ComboBox)"""
 def __init__(self):
 self.items = [""]
 self.editable = True
 self.enabled = True
 self.dropdownWidth = 'WWWWWW'
 self.width = 'WWWWWW'
 def onSelChange(self, selection):
 print "New Selection:",selection
 def onEditChange(self, text):
 print "Edit Change:",text
 global fc
 fc = text
 def onFocus(self, focused):
 pass
 def onEnter(self):
 print "Current Value:",self.value
 def refresh(self):
 pass

Button:

class BackupToFolder(object):
 """Implementation for BackupPlus_addin.BackupToFolder (Button)"""
 def __init__(self):
 self.enabled = True
 self.checked = False
 def onClick(self):
 import arcpy
 import os
 import time
 from arcpy import env
 mxd = arcpy.mapping.MapDocument("CURRENT")
 df = mxd.activeDataFrame
 arcpy.env.overwriteOutput=True
 global fc 
 #some code