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annotate browser_side/plugin_xep_0085.py @ 239:b911f2b43fd4

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browser_side: added input history in the unibox: This functionality uses a file from the sat project: use the -I parameter of pyjsbuild to add sat library to your PYJSPATH. To ease also possible to use your sat source directory instead of the library, you just need to trick pyjsbuild with a symbolic link: SAT=~/workspace/sat if [[ ! -e $SAT/sat ]]; then ln -sf $SAT/src $SAT/sat; fi This will allow you to import like that in libervia.py: from sat.tools.frontend.misc import InputHistory And then you can build with: $PYJS/bin/pyjsbuild libervia --no-compile-inplace -m -I $SAT
author souliane <souliane@mailoo.org>
date Mon, 14 Oct 2013 20:54:13 +0200
parents 624a87377412
children ce5b33f499c5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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624a87377412 browser_side, plugin XEP-0085: limit the number of bridge methods calls for "chatStateComposing".
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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 # SAT plugin for Chat State Notifications Protocol (xep-0085)
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5 # Copyright (C) 2013 Adrien Cossa (souliane@mailoo.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from pyjamas.Timer import Timer
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21
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22
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23 # Copy of the map from sat/src/plugins/plugin_xep_0085
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24 TRANSITIONS = {"active": {"next_state": "inactive", "delay": 120},
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25 "inactive": {"next_state": "gone", "delay": 480},
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26 "gone": {"next_state": "", "delay": 0},
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27 "composing": {"next_state": "paused", "delay": 30},
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28 "paused": {"next_state": "inactive", "delay": 450}
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29 }
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30
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31
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32 class ChatStateMachine:
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33 """This is an adapted version of the ChatStateMachine from sat/src/plugins/plugin_xep_0085
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34 which manage a timer on the web browser and keep it synchronized with the timer that runs
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35 on the backend. This is only needed to avoid calling the bridge method chatStateComposing
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36 too often ; accuracy is not needed so we can ignore the delay of the communication between
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37 the web browser and the backend (the timer on the web browser always starts a bit before).
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38 /!\ Keep this file up to date if you modify the one in the sat plugins directory.
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39 """
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40 def __init__(self, host, target_s):
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41
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42 self.host = host
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43 self.target_s = target_s
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44 self.started = False
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45 self.state = None
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46 self.timer = None
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47
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48 def _onEvent(self, state):
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49 """Pyjamas callback takes no extra argument so we need this trick"""
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50 # Here we should check the value of the parameter "Send chat state notifications"
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51 # but this costs two messages. It's even better to call chatStateComposing
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52 # with a doubt, it will be checked by the back-end anyway before sending
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53 # the actual notifications to the other client.
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54 if state == "composing" and not self.started:
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55 return
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56 self.started = True
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57 self.next_state = state
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58 self.__onEvent()
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59
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60 def __onEvent(self):
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61 # print "on event %s" % self.next_state
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62 state = self.next_state
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63 self.next_state = ""
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64 if state != self.state and state == "composing":
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65 self.host.bridge.call('chatStateComposing', None, self.target_s)
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66 self.state = state
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67 if not self.timer is None:
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68 self.timer.cancel()
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69
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70 if not state in TRANSITIONS:
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71 return
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72 if not "next_state" in TRANSITIONS[state]:
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73 return
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74 if not "delay" in TRANSITIONS[state]:
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75 return
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76 next_state = TRANSITIONS[state]["next_state"]
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77 delay = TRANSITIONS[state]["delay"]
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78 if next_state == "" or delay < 0:
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79 return
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80 self.next_state = next_state
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81 # pyjamas timer in milliseconds
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82 self.timer = Timer(delay * 1000, self.__onEvent)