Mercurial > getan
changeset 225:f958ce12ba5a
Implement an own ListWalker class
Allow to handle focus changed via a callback method in the widget class.
| author | Björn Ricks <bjoern.ricks@intevation.de> |
|---|---|
| date | Fri, 05 Apr 2013 20:14:20 +0200 |
| parents | c8f85809607b |
| children | f8571308abef |
| files | getan/walker.py |
| diffstat | 1 files changed, 28 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/getan/walker.py Fri Apr 05 20:14:20 2013 +0200 @@ -0,0 +1,28 @@ +# -*- coding: utf-8 -*- +# +# (c) 2013 by Björn Ricks <bjoern.ricks@intevation.de> +# +# This is Free Software licensed under the terms of GPLv3 or later. +# For details see LICENSE coming with the source of 'getan'. +# +import logging + +import urwid + + +logger = logging.getLogger(__name__) + +class ListWalker(urwid.SimpleListWalker): + + def __init__(self, content, widget=None): + logger.info("Init ListWalker") + super(ListWalker, self).__init__(content) + self.widget = widget + self.position = None + + def set_focus(self, position): + super(ListWalker, self).set_focus(position) + if self.widget and self.position != position: + self.position = position + self.widget.content_focus_changed() +