def __init__(self):
items = []
for step in steps.get_steps():
items.append(NavigatorEntry(step))
walker = urwid.SimpleListWalker(items)
self._walker = walker
self._active_entry = self._walker.get_focus()[0]
urwid.connect_signal(walker, 'modified', self._on_focus_changed)
linebox = urwid.LineBox(urwid.ListBox(walker))
linebox = urwid.AttrMap(linebox, 'default', 'button.active')
super(Navigator, self).__init__(linebox)
def _load_step_views(self):
for step in steps.get_steps():
try:
# Import view's module if available
mod = import_module('.' + step.view_module_name,
self.__module__)
except ImportError:
logger.debug("no module view for step '%s'" % step.name)
step.view_data = None
else:
# Retrieve view's class and instantiate it.
view = getattr(mod, step.view_class_name + 'View')(self, step)
step.view_data = view
def __run_steps(self):
self._retcode = 1
for step in steps.get_steps():
assert (not step.is_disabled())
if not step.view_data:
step.view_data = StepView(None, step)
view = step.view_data
if self._args.progress:
self._progress_bar = ProgressBar(step.name)
timer = GLib.timeout_add_seconds(1, self._on_timeout, step)
view.run(self._args)
if not step.is_done():
return
self._retcode = 0
def set_focus(self, step):
assert (not step.is_disabled())
self._walker.set_focus(steps.get_steps().index(step))
def get_focus(self):
return steps.get_steps()[self._walker.get_focus()[1]]
def _select_next_step(self):
start = steps.get_steps().index(self._current_step)
for step in steps.get_steps()[start:]:
if step.is_enabled() and not step.is_done():
self._select_step(step)
return
def _select_first_step(self):
self._select_step(steps.get_steps()[0])
def _quit(self):
# Stop the running step, if any.
for s in steps.get_steps():
s.cancel()
logger.info(_("exiting..."))