Description of problem:
Rawhide, current as of ~1200 UTC, 2006-08-14.  pirut crashes when switching from
the List view to the Search view.

Version-Release number of selected component (if applicable):
1.1.8-1

How reproducible:
Every time.

Steps to Reproduce:
1. Run pirut.
2. Select List view. Wait for parser to finish normally.
3. Select Search view.
  
Actual results:
Kerplooie.

Expected results:
A proper list view.

Additional info:
Bug reporter generates the following output.  I am just learning Python so I
restarted once from a terminal and tried "Debug" just to see if I could learn
anything -- to no avail of course. :-)  But I *do* know (or *think* I know) that
the self.xml.get_widget("packageListTree") is probably expected to return a
gtk.Widget, right?  Maybe this is an incorrect widget label?  Aww, listen to me
jawin' like I know somethin'.  What a swelled-head.  Pay me no mind, here's the
report:

- - - - -
Component: Software Manager
Summary: TB969e4b0d PackageList.py:137:grab_focus:AttributeError: 'NoneType'
object has no attribute 'grab_focus'

Traceback (most recent call last):
  File "/usr/sbin/pirut", line 230, in _showList
    plist.grab_focus()
  File "/usr/lib/python2.4/site-packages/pirut/PackageList.py", line 137, in
grab_focus
    self.xml.get_widget("packageListTree").grab_focus()
AttributeError: 'NoneType' object has no attribute 'grab_focus'

Local variables in innermost frame:
self: <PirutPackageList object (pirut+PackageList+PirutPackageList) at 0xa15d5f4>
- - - - -