Start with namecoin connection module.

Create a still mostly empty module to encapsulate the
namecoin address query, and use it from the UI.

src/bitmessageqt/__init__.py

@@ -14,6 +14,7 @@ except ImportError:
 from addresses import *
 import shared
 from bitmessageui import *
+from class_namecoin import *
 from newaddressdialog import *
 from newsubscriptiondialog import *
 from regenerateaddresses import *
@@ -1457,7 +1458,13 @@ class MyForm(QtGui.QMainWindow):
                 "MainWindow", "Right click one or more entries in your address book and select \'Send message to this address\'."))
 
     def click_pushButtonFetchNamecoinID(self):
-        self.ui.lineEditTo.setText ("BM-Foobar")
+        nc = namecoinConnection()
+        err, addr = nc.query("")
+        if err is not None:
+            self.statusBar().showMessage(_translate(
+                "MainWindow", "Error: " + err))
+        else:
+            self.ui.lineEditTo.setText(addr)
 
     def redrawLabelFrom(self, index):
         self.ui.labelFrom.setText(

src/class_namecoin.py

@@ -0,0 +1,20 @@
+from jsonrpc import ServiceProxy, JSONRPCException
+
+# This class handles the Namecoin identity integration.
+
+class namecoinConnection(object):
+
+    def __init__(self):
+        user = "daniel"
+        password = "password"
+        host = "localhost"
+        port = "8336"
+        self.s = ServiceProxy ("http://" + user + ":" + password
+                               + "@" + host + ":" + port)
+
+    # Query for the bitmessage address corresponding to the given identity
+    # string.  If it doesn't contain a slash, id/ is prepended.  We return
+    # the result as (Error, Address) pair, where the Error is an error
+    # message to display or None in case of success.
+    def query(self,string):
+        return None, "BM-Foobar2"