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# Copyright 2010 Lars Wirzenius
#
# This program 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.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
import ttystatus
class Counter(ttystatus.Widget):
'''Display a count of how many times a value has changed.'''
static_width = False
def __init__(self, name):
self.name = name
self.prev = None
self.count = 0
def render(self, width):
return str(self.count)
def update(self, master):
if master[self.name] != self.prev:
self.prev = master[self.name]
self.count += 1
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