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annotate src/plugins/plugin_xep_0085.py @ 1453:d5e72362ee91

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plugin XEP-0277: better parsing of atom:author element + item2mbdata minor reorganisation for better readability
author Goffi <goffi@goffi.org>
date Sat, 15 Aug 2015 22:22:36 +0200
parents 069ad98b360d
children 0632d96f08ad
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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) 2009, 2010, 2011, 2012, 2013, 2014, 2015 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 sat.core.i18n import _
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21 from sat.core.constants import Const as C
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22 from sat.core import exceptions
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23 from sat.core.log import getLogger
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24 log = getLogger(__name__)
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25 from wokkel import disco, iwokkel
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26 from zope.interface import implements
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27 from twisted.words.protocols.jabber.jid import JID
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28 try:
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29 from twisted.words.protocols.xmlstream import XMPPHandler
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30 except ImportError:
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31 from wokkel.subprotocols import XMPPHandler
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32 from threading import Timer
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33 from twisted.words.xish import domish
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34
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35 NS_XMPP_CLIENT = "jabber:client"
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36 NS_CHAT_STATES = "http://jabber.org/protocol/chatstates"
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37 CHAT_STATES = ["active", "inactive", "gone", "composing", "paused"]
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38 MESSAGE_TYPES = ["chat", "groupchat"]
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39 PARAM_KEY = "Notifications"
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40 PARAM_NAME = "Enable chat state notifications"
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41 ENTITY_KEY = PARAM_KEY + "_" + PARAM_NAME
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42 DELETE_VALUE = "DELETE"
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43
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44 PLUGIN_INFO = {
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45 "name": "Chat State Notifications Protocol Plugin",
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46 "import_name": "XEP-0085",
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47 "type": "XEP",
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48 "protocols": ["XEP-0085"],
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49 "dependencies": [],
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50 "main": "XEP_0085",
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51 "handler": "yes",
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52 "description": _("""Implementation of Chat State Notifications Protocol""")
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53 }
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54
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55
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56 # Describe the internal transitions that are triggered
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57 # by a timer. Beside that, external transitions can be
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58 # runned to target the states "active" or "composing".
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59 # Delay is specified here in seconds.
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60 TRANSITIONS = {
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61 "active": {"next_state": "inactive", "delay": 120},
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62 "inactive": {"next_state": "gone", "delay": 480},
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63 "gone": {"next_state": "", "delay": 0},
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64 "composing": {"next_state": "paused", "delay": 30},
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65 "paused": {"next_state": "inactive", "delay": 450}
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66 }
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67
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68
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69 class UnknownChatStateException(Exception):
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70 """
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71 This error is raised when an unknown chat state is used.
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72 """
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73 pass
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74
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75
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76 class XEP_0085(object):
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77 """
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78 Implementation for XEP 0085
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79 """
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80 params = """
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81 <params>
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82 <individual>
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83 <category name="%(category_name)s" label="%(category_label)s">
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84 <param name="%(param_name)s" label="%(param_label)s" value="true" type="bool" security="0"/>
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85 </category>
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86 </individual>
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87 </params>
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88 """ % {
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89 'category_name': PARAM_KEY,
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90 'category_label': _(PARAM_KEY),
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91 'param_name': PARAM_NAME,
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92 'param_label': _('Enable chat state notifications')
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93 }
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94
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95 def __init__(self, host):
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96 log.info(_("Chat State Notifications plugin initialization"))
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97 self.host = host
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98 self.map = {}
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99
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100 # parameter value is retrieved before each use
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101 host.memory.updateParams(self.params)
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102
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103 # triggers from core
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104 host.trigger.add("MessageReceived", self.messageReceivedTrigger)
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105 host.trigger.add("sendMessage", self.sendMessageTrigger)
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106 host.trigger.add("paramUpdateTrigger", self.paramUpdateTrigger)
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107
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108 # args: to_s (jid as string), profile
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109 host.bridge.addMethod("chatStateComposing", ".plugin", in_sign='ss',
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110 out_sign='', method=self.chatStateComposing)
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111
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112 # args: from (jid as string), state in CHAT_STATES, profile
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113 host.bridge.addSignal("chatStateReceived", ".plugin", signature='sss')
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114
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115 def getHandler(self, profile):
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116 return XEP_0085_handler(self, profile)
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117
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118 def profileDisconnected(self, profile):
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119 """Eventually send a 'gone' state to all one2one contacts."""
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120 if profile not in self.map:
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121 return
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122 for to_jid in self.map[profile]:
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123 # FIXME: the "unavailable" presence stanza is received by to_jid
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124 # before the chat state, so it will be ignored... find a way to
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125 # actually defer the disconnection
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126 self.map[profile][to_jid]._onEvent('gone')
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127 del self.map[profile]
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128
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129 def updateCache(self, entity_jid, value, profile):
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130 """Update the entity data of the given profile for one or all contacts.
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131 Reset the chat state(s) display if the notification has been disabled.
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132
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133 @param entity_jid: contact's JID, or C.ENTITY_ALL to update all contacts.
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134 @param value: True, False or DELETE_VALUE to delete the entity data
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135 @param profile: current profile
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136 """
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137 if value == DELETE_VALUE:
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diff changeset
138 self.host.memory.delEntityDatum(entity_jid, ENTITY_KEY, profile)
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diff changeset
139 else:
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diff changeset
140 self.host.memory.updateEntityData(entity_jid, ENTITY_KEY, value, profile_key=profile)
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141 if not value or value == DELETE_VALUE:
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diff changeset
142 # reinit chat state UI for this or these contact(s)
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143 self.host.bridge.chatStateReceived(unicode(entity_jid), "", profile)
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144
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145 def paramUpdateTrigger(self, name, value, category, type_, profile):
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146 """Reset all the existing chat state entity data associated with this profile after a parameter modification.
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147
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148 @param name: parameter name
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149 @param value: "true" to activate the notifications, or any other value to delete it
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150 @param category: parameter category
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151 @param type_: parameter type
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152 """
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153 if (category, name) == (PARAM_KEY, PARAM_NAME):
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154 self.updateCache(C.ENTITY_ALL, True if C.bool(value) else DELETE_VALUE, profile=profile)
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155 return False
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156 return True
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157
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158 def messageReceivedTrigger(self, message, post_treat, profile):
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159 """
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160 Update the entity cache when we receive a message with body.
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161 Check for a chat state in the message and signal frontends.
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162 """
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163 if not self.host.memory.getParamA(PARAM_NAME, PARAM_KEY, profile_key=profile):
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164 return True
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165
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166 from_jid = JID(message.getAttribute("from"))
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167 if self._isMUC(from_jid, profile):
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168 from_jid = from_jid.userhostJID()
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169 else: # update entity data for one2one chat
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170 # assert from_jid.resource # FIXME: assert doesn't work on normal message from server (e.g. server announce), because there is no resource
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171 try:
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172 domish.generateElementsNamed(message.elements(), name="body").next()
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173 try:
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174 domish.generateElementsNamed(message.elements(), name="active").next()
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175 # contact enabled Chat State Notifications
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176 self.updateCache(from_jid, True, profile=profile)
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177 except StopIteration:
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178 if message.getAttribute('type') == 'chat':
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179 # contact didn't enable Chat State Notifications
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180 self.updateCache(from_jid, False, profile=profile)
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181 return True
636
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182 except StopIteration:
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183 pass
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184
908
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185 # send our next "composing" states to any MUC and to the contacts who enabled the feature
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186 self.__chatStateInit(from_jid, message.getAttribute("type"), profile)
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187
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diff changeset
188 state_list = [child.name for child in message.elements() if
636
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diff changeset
189 message.getAttribute("type") in MESSAGE_TYPES
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190 and child.name in CHAT_STATES
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parents:
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191 and child.defaultUri == NS_CHAT_STATES]
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souliane <souliane@mailoo.org>
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diff changeset
192 for state in state_list:
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193 # there must be only one state according to the XEP
908
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194 if state != 'gone' or message.getAttribute('type') != 'groupchat':
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195 self.host.bridge.chatStateReceived(message.getAttribute("from"), state, profile)
636
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196 break
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197 return True
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198
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diff changeset
199 def sendMessageTrigger(self, mess_data, pre_xml_treatments, post_xml_treatments, profile):
636
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200 """
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diff changeset
201 Eventually add the chat state to the message and initiate
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
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parents:
diff changeset
202 the state machine when sending an "active" state.
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parents:
diff changeset
203 """
697
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diff changeset
204 def treatment(mess_data):
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diff changeset
205 message = mess_data['xml']
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diff changeset
206 to_jid = JID(message.getAttribute("to"))
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diff changeset
207 if not self._checkActivation(to_jid, forceEntityData=True, profile=profile):
724
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diff changeset
208 return mess_data
697
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diff changeset
209 try:
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diff changeset
210 # message with a body always mean active state
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diff changeset
211 domish.generateElementsNamed(message.elements(), name="body").next()
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diff changeset
212 message.addElement('active', NS_CHAT_STATES)
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diff changeset
213 # launch the chat state machine (init the timer)
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diff changeset
214 if self._isMUC(to_jid, profile):
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diff changeset
215 to_jid = to_jid.userhostJID()
697
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diff changeset
216 self.__chatStateActive(to_jid, mess_data["type"], profile)
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diff changeset
217 except StopIteration:
698
d731ae066158 core: sendMessage's options parameter has been renamed to extra to be consistent with newMessage
Goffi <goffi@goffi.org>
parents: 697
diff changeset
218 if "chat_state" in mess_data["extra"]:
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parents: 697
diff changeset
219 state = mess_data["extra"].pop("chat_state")
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diff changeset
220 assert state in CHAT_STATES
697
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diff changeset
221 message.addElement(state, NS_CHAT_STATES)
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diff changeset
222 return mess_data
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diff changeset
223
922
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diff changeset
224 post_xml_treatments.addCallback(treatment)
636
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225 return True
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diff changeset
226
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diff changeset
227 def _isMUC(self, to_jid, profile):
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228 """Tell if that JID is a MUC or not
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229
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diff changeset
230 @param to_jid (JID): full or bare JID to check
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diff changeset
231 @param profile (str): %(doc_profile)s
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diff changeset
232 @return: bool
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233 """
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diff changeset
234 try:
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diff changeset
235 type_ = self.host.memory.getEntityDatum(to_jid.userhostJID(), 'type', profile)
1290
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diff changeset
236 if type_ == 'chatroom': # FIXME: should not use disco instead ?
1252
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diff changeset
237 return True
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diff changeset
238 except (exceptions.UnknownEntityError, KeyError):
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diff changeset
239 pass
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diff changeset
240 return False
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diff changeset
241
1290
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diff changeset
242 def _checkActivation(self, to_jid, forceEntityData, profile):
659
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diff changeset
243 """
1252
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diff changeset
244 @param to_jid: the contact's full JID (or bare if you know it's a MUC)
659
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diff changeset
245 @param forceEntityData: if set to True, a non-existing
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diff changeset
246 entity data will be considered to be True (and initialized)
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diff changeset
247 @param: current profile
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diff changeset
248 @return: True if the notifications should be sent to this JID.
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diff changeset
249 """
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diff changeset
250 # check if the parameter is active
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diff changeset
251 if not self.host.memory.getParamA(PARAM_NAME, PARAM_KEY, profile_key=profile):
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diff changeset
252 return False
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diff changeset
253 # check if notifications should be sent to this contact
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254 if self._isMUC(to_jid, profile):
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255 return True
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256 # FIXME: this assertion crash when we want to send a message to an online bare jid
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257 # assert to_jid.resource or not self.host.memory.isEntityAvailable(to_jid, profile) # must either have a resource, or talk to an offline contact
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258 try:
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259 return self.host.memory.getEntityDatum(to_jid, ENTITY_KEY, profile)
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260 except (exceptions.UnknownEntityError, KeyError):
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261 if forceEntityData:
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262 # enable it for the first time
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263 self.updateCache(to_jid, True, profile=profile)
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264 return True
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265 # wait for the first message before sending states
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266 return False
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267
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268 def __chatStateInit(self, to_jid, mess_type, profile):
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269 """
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270 Data initialization for the chat state machine.
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271
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272 @param to_jid (JID): full JID for one2one, bare JID for MUC
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273 @param mess_type (str): "one2one" or "groupchat"
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274 @param profile (str): %(doc_profile)s
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275 """
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276 if mess_type is None:
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277 return
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278 profile_map = self.map.setdefault(profile, {})
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279 if to_jid not in profile_map:
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280 machine = ChatStateMachine(self.host, to_jid,
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281 mess_type, profile)
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282 self.map[profile][to_jid] = machine
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283
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284 def __chatStateActive(self, to_jid, mess_type, profile_key):
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285 """
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286 Launch the chat state machine on "active" state.
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287
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288 @param to_jid (JID): full JID for one2one, bare JID for MUC
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289 @param mess_type (str): "one2one" or "groupchat"
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290 @param profile (str): %(doc_profile)s
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291 """
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292 profile = self.host.memory.getProfileName(profile_key)
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293 if profile is None:
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294 raise exceptions.ProfileUnknownError
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295 self.__chatStateInit(to_jid, mess_type, profile)
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296 self.map[profile][to_jid]._onEvent("active")
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297
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298 def chatStateComposing(self, to_jid_s, profile_key):
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299 """Move to the "composing" state when required.
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300
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301 Since this method is called from the front-end, it needs to check the
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302 values of the parameter "Send chat state notifications" and the entity
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303 data associated to the target JID.
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304
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305 @param to_jid_s (str): contact full JID as a string
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306 @param profile_key (str): %(doc_profile_key)s
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307 """
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308 # TODO: try to optimize this method which is called often
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309 profile = self.host.memory.getProfileName(profile_key)
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310 if profile is None:
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311 raise exceptions.ProfileUnknownError
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312 to_jid = JID(to_jid_s)
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313 if self._isMUC(to_jid, profile):
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314 to_jid = to_jid.userhostJID()
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315 elif not to_jid.resource:
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316 to_jid.resource = self.host.memory.getMainResource(to_jid, profile)
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317 if not self._checkActivation(to_jid, forceEntityData=False, profile=profile):
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318 return
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319 try:
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320 self.map[profile][to_jid]._onEvent("composing")
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321 except (KeyError, AttributeError):
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322 # no message has been sent/received since the notifications
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323 # have been enabled, it's better to wait for a first one
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324 pass
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325
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326
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327 class ChatStateMachine:
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328 """
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329 This class represents a chat state, between one profile and
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330 one target contact. A timer is used to move from one state
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331 to the other. The initialization is done through the "active"
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332 state which is internally set when a message is sent. The state
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333 "composing" can be set externally (through the bridge by a
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334 frontend). Other states are automatically set with the timer.
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335 """
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336
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337 def __init__(self, host, to_jid, mess_type, profile):
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338 """
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339 Initialization need to store the target, message type
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340 and a profile for sending later messages.
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341 """
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342 self.host = host
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343 self.to_jid = to_jid
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344 self.mess_type = mess_type
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345 self.profile = profile
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346 self.state = None
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347 self.timer = None
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348
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349 def _onEvent(self, state):
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350 """
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351 Move to the specified state, eventually send the
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352 notification to the contact (the "active" state is
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353 automatically sent with each message) and set the timer.
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354 """
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355 assert state in TRANSITIONS
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356 transition = TRANSITIONS[state]
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357 assert "next_state" in transition and "delay" in transition
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358
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359 if state != self.state and state != "active":
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360 if state != 'gone' or self.mess_type != 'groupchat':
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361 # send a new message without body
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362 log.debug(u"sending state '{state}' to {jid}".format(state=state, jid=self.to_jid.full()))
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363 client = self.host.getClient(self.profile)
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364 mess_data = {'message': None,
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365 'type': self.mess_type,
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366 'from': client.jid,
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367 'to': self.to_jid,
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368 'subject': None
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369 }
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370 self.host.generateMessageXML(mess_data)
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371 mess_data['xml'].addElement(state, NS_CHAT_STATES)
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372 client.xmlstream.send(mess_data['xml'])
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373
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374 self.state = state
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375 if self.timer is not None:
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376 self.timer.cancel()
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377
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378 if transition["next_state"] and transition["delay"] > 0:
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379 self.timer = Timer(transition["delay"], self._onEvent, [transition["next_state"]])
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380 self.timer.start()
636
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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381
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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382
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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383 class XEP_0085_handler(XMPPHandler):
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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384 implements(iwokkel.IDisco)
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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385
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
diff changeset
386 def __init__(self, plugin_parent, profile):
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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387 self.plugin_parent = plugin_parent
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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388 self.host = plugin_parent.host
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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389 self.profile = profile
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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390
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
diff changeset
391 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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392 return [disco.DiscoFeature(NS_CHAT_STATES)]
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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393
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
diff changeset
394 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
diff changeset
395 return []