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'''
Task Coach - Your friendly task manager
Copyright (C) 2004-2014 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/>.
'''
from wx.lib.pubsub import pub
import wx
class AutoSaver(object):
''' AutoSaver observes task files. If a task file is changed by the user
(gets 'dirty') and auto save is on, AutoSaver saves the task file. '''
def __init__(self, settings, *args, **kwargs):
super(AutoSaver, self).__init__(*args, **kwargs)
self.__settings = settings
self.__task_files = set()
self.__bound = False
pub.subscribe(self.onTaskFileDirty, 'taskfile.dirty')
def onTaskFileDirty(self, taskFile):
''' When a task file gets dirty and auto save is on, note it so
it can be saved during idle time. '''
if self._needSave(taskFile):
self.__task_files.add(taskFile)
if not self.__bound:
self.__bound = True
wx.GetApp().Bind(wx.EVT_IDLE, self.on_idle)
def _needSave(self, task_file):
''' Return whether the task file needs to be saved. '''
return task_file.filename() and task_file.needSave() and \
self.__settings.getboolean('file', 'autosave')
def _needLoad(self, taskFile):
return taskFile.changedOnDisk() and \
self.__settings.getboolean('file', 'autoload')
def on_idle(self, event):
''' Actually save the dirty files during idle time. '''
event.Skip()
wx.GetApp().Unbind(wx.EVT_IDLE, handler=self.on_idle)
self.__bound = False
while self.__task_files:
task_file = self.__task_files.pop()
if self._needSave(task_file):
task_file.save()
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