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# Copyright (C) 2009, 2010, 2011 Rickard Lindberg, Roger Lindberg
#
# This file is part of Timeline.
#
# Timeline is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Timeline is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Timeline. If not, see <http://www.gnu.org/licenses/>.
from timelinelib.db.exceptions import TimelineIOError
FORWARD = 0
BACKWARD = 1
BOTH = 2
class DuplicateEventEditor(object):
def __init__(self, view, db, event):
self.view = view
self.db = db
self.event = event
def initialize(self):
self.view.set_count(1)
self.view.set_frequency(1)
self.view.select_move_period_fn_at_index(0)
self.view.set_direction(FORWARD)
def create_duplicates_and_save(self):
(periods, nbr_of_missing_dates) = self._repeat_period(
self.event.time_period,
self.view.get_move_period_fn(),
self.view.get_frequency(),
self.view.get_count(),
self.view.get_direction())
try:
for period in periods:
event = self.event.clone()
event.update_period(period.start_time, period.end_time)
self.db.save_event(event)
if nbr_of_missing_dates > 0:
self.view.handle_date_errors(nbr_of_missing_dates)
self.view.close()
except TimelineIOError, e:
self.view.handle_db_error(e)
def _repeat_period(self, period, move_period_fn, frequency,
repetitions, direction):
periods = []
nbr_of_missing_dates = 0
for index in self._calc_indicies(direction, repetitions):
new_period = move_period_fn(period, index*frequency)
if new_period == None:
nbr_of_missing_dates += 1
else:
periods.append(new_period)
return (periods, nbr_of_missing_dates)
def _calc_indicies(self, direction, repetitions):
if direction == FORWARD:
return range(1, repetitions + 1)
elif direction == BACKWARD:
return range(-repetitions, 0)
elif direction == BOTH:
indicies = range(-repetitions, repetitions + 1)
indicies.remove(0)
return indicies
else:
raise Exception("Invalid direction.")
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