annotate src/tools/misc.py @ 542:3eeb6c865e4d

frontends: incoming files transfer management: - quick app: getWaitingConf is used on profile connexion - primitivus: askConfirmation is now managed, use new 'dir' style of FileDialog
author Goffi <goffi@goffi.org>
date Wed, 14 Nov 2012 20:37:15 +0100
parents 5431136501ab
children ca13633d3b6b
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 """
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5 SAT: a jabber client
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6 Copyright (C) 2009, 2010, 2011, 2012 Jérôme Poisson (goffi@goffi.org)
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7
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8 This program is free software: you can redistribute it and/or modify
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9 it under the terms of the GNU Affero General Public License as published by
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10 the Free Software Foundation, either version 3 of the License, or
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11 (at your option) any later version.
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13 This program is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU Affero General Public License for more details.
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17
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18 You should have received a copy of the GNU Affero General Public License
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19 along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 """
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21
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22 from logging import debug, info, error
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24 """Misc usefull classes"""
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25
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26 class TriggerException(Exception):
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27 pass
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28
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29 class SkipOtherTriggers(Exception):
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30 """ Exception to raise if normal behaviour must be followed instead of
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31 followind triggers list """
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32 pass
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33
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34 class TriggerManager:
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35 """This class manage triggers: code which interact to change de behaviour of SàT"""
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36
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37 def __init__(self):
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38 self.__triggers={}
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39
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40 def add(self, point_name, callback, priority=0):
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41 """Add a trigger to a point
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42 @param point_name: name of the point when the trigger should be run
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43 @param callback: method to call at the trigger point
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44 @param priority: callback will be called in priority order, biggest first
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45 """
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46 if not self.__triggers.has_key(point_name):
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47 self.__triggers[point_name]=[]
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48 self.__triggers[point_name].append((priority, callback))
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49 self.__triggers[point_name].sort(key=lambda trigger_tuple: trigger_tuple[0], reverse=True)
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51 def remove(self, point_name, callback):
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52 """Remove a trigger from a point
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53 @param point_name: name of the point when the trigger should be run
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54 @param callback: method to remove, must exists in the trigger point"""
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55 for trigger_tuple in self.__triggers[point_name]:
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56 if trigger_tuple[1] == callback:
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57 self.__triggers[point_name].remove(trigger_tuple)
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58 return
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59 raise TriggerException("Trying to remove an unexisting trigger")
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61 def point(self, point_name, *args, **kwargs):
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62 """This put a trigger point
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63 All the trigger for that point will be run
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64 @param point_name: name of the trigger point
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65 @return: True if the action must be continued, False else"""
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66 if not self.__triggers.has_key(point_name):
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67 return True
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69 for priority,trigger in self.__triggers[point_name]:
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70 try:
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71 if not trigger(*args, **kwargs):
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72 return False
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73 except SkipOtherTriggers:
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74 break
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75 return True
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76