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'''
Task Coach - Your friendly task manager
Copyright (C) 2011 Task Coach developers <developers@taskcoach.org>
Task Coach 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.
Task Coach 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 os, time, threading
from taskcoachlib.filesystem import base
class FilesystemPollerNotifier(base.NotifierBase, threading.Thread):
def __init__(self):
super(FilesystemPollerNotifier, self).__init__()
self.lock = threading.RLock()
self.cancelled = False
self.evt = threading.Event()
self.setDaemon(True)
self.start()
def setFilename(self, filename):
self.lock.acquire()
try:
super(FilesystemPollerNotifier, self).setFilename(filename)
finally:
self.lock.release()
def run(self):
try:
while not self.cancelled:
self.lock.acquire()
try:
if self._filename and os.path.exists(self._filename):
stamp = os.stat(self._filename).st_mtime
if stamp > self.stamp:
self.stamp = stamp
self.onFileChanged()
finally:
self.lock.release()
self.evt.wait(10)
except TypeError:
pass
def stop(self):
self.cancelled = True
self.evt.set()
self.join()
def onFileChanged(self):
raise NotImplementedError
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