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annotate src/plugins/plugin_xep_0085.py @ 1946:827bb478d8af

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author Goffi <goffi@goffi.org>
date Thu, 21 Apr 2016 20:20:40 +0200
parents 2daf7b4c6756
children 633b5c21aefd
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1 #!/usr/bin/env python2
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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) 2009-2016 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 twisted.words.xish import domish
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33 from twisted.internet import reactor
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34 from twisted.internet import error as internet_error
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36 NS_XMPP_CLIENT = "jabber:client"
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37 NS_CHAT_STATES = "http://jabber.org/protocol/chatstates"
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38 CHAT_STATES = ["active", "inactive", "gone", "composing", "paused"]
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39 MESSAGE_TYPES = ["chat", "groupchat"]
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40 PARAM_KEY = "Notifications"
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41 PARAM_NAME = "Enable chat state notifications"
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42 ENTITY_KEY = PARAM_KEY + "_" + PARAM_NAME
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43 DELETE_VALUE = "DELETE"
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44
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45 PLUGIN_INFO = {
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46 "name": "Chat State Notifications Protocol Plugin",
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47 "import_name": "XEP-0085",
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48 "type": "XEP",
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49 "protocols": ["XEP-0085"],
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50 "dependencies": [],
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51 "main": "XEP_0085",
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52 "handler": "yes",
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53 "description": _("""Implementation of Chat State Notifications Protocol""")
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54 }
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55
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56
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57 # Describe the internal transitions that are triggered
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58 # by a timer. Beside that, external transitions can be
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59 # runned to target the states "active" or "composing".
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60 # Delay is specified here in seconds.
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61 TRANSITIONS = {
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62 "active": {"next_state": "inactive", "delay": 120},
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63 "inactive": {"next_state": "gone", "delay": 480},
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64 "gone": {"next_state": "", "delay": 0},
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65 "composing": {"next_state": "paused", "delay": 30},
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66 "paused": {"next_state": "inactive", "delay": 450}
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67 }
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68
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69
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70 class UnknownChatStateException(Exception):
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71 """
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72 This error is raised when an unknown chat state is used.
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73 """
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74 pass
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75
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76
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77 class XEP_0085(object):
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78 """
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79 Implementation for XEP 0085
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80 """
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81 params = """
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82 <params>
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83 <individual>
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84 <category name="%(category_name)s" label="%(category_label)s">
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85 <param name="%(param_name)s" label="%(param_label)s" value="true" type="bool" security="0"/>
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86 </category>
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87 </individual>
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88 </params>
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89 """ % {
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90 'category_name': PARAM_KEY,
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91 'category_label': _(PARAM_KEY),
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92 'param_name': PARAM_NAME,
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93 'param_label': _('Enable chat state notifications')
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94 }
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95
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96 def __init__(self, host):
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97 log.info(_("Chat State Notifications plugin initialization"))
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98 self.host = host
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99 self.map = {}
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100
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101 # parameter value is retrieved before each use
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102 host.memory.updateParams(self.params)
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103
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104 # triggers from core
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105 host.trigger.add("MessageReceived", self.messageReceivedTrigger)
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106 host.trigger.add("sendMessage", self.sendMessageTrigger)
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107 host.trigger.add("paramUpdateTrigger", self.paramUpdateTrigger)
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108
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109 # args: to_s (jid as string), profile
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110 host.bridge.addMethod("chatStateComposing", ".plugin", in_sign='ss',
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111 out_sign='', method=self.chatStateComposing)
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112
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113 # args: from (jid as string), state in CHAT_STATES, profile
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114 host.bridge.addSignal("chatStateReceived", ".plugin", signature='sss')
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115
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116 def getHandler(self, profile):
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117 return XEP_0085_handler(self, profile)
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118
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119 def profileDisconnected(self, profile):
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120 """Eventually send a 'gone' state to all one2one contacts."""
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121 if profile not in self.map:
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122 return
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123 for to_jid in self.map[profile]:
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124 # FIXME: the "unavailable" presence stanza is received by to_jid
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125 # before the chat state, so it will be ignored... find a way to
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126 # actually defer the disconnection
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127 self.map[profile][to_jid]._onEvent('gone')
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128 del self.map[profile]
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129
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130 def updateCache(self, entity_jid, value, profile):
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131 """Update the entity data of the given profile for one or all contacts.
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132 Reset the chat state(s) display if the notification has been disabled.
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133
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134 @param entity_jid: contact's JID, or C.ENTITY_ALL to update all contacts.
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135 @param value: True, False or DELETE_VALUE to delete the entity data
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136 @param profile: current profile
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137 """
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138 if value == DELETE_VALUE:
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parents: 1315
diff changeset
139 self.host.memory.delEntityDatum(entity_jid, ENTITY_KEY, profile)
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diff changeset
140 else:
1315
be3a301540c0 core (memory): updateEntityData now accept a "silent" argument to avoid sending signal to frontends when updating an attribute with "signalOnUpdate" flag.
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
141 self.host.memory.updateEntityData(entity_jid, ENTITY_KEY, value, profile_key=profile)
1290
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142 if not value or value == DELETE_VALUE:
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diff changeset
143 # reinit chat state UI for this or these contact(s)
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144 self.host.bridge.chatStateReceived(unicode(entity_jid), "", profile)
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145
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146 def paramUpdateTrigger(self, name, value, category, type_, profile):
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147 """Reset all the existing chat state entity data associated with this profile after a parameter modification.
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148
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149 @param name: parameter name
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150 @param value: "true" to activate the notifications, or any other value to delete it
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151 @param category: parameter category
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152 @param type_: parameter type
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153 """
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154 if (category, name) == (PARAM_KEY, PARAM_NAME):
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155 self.updateCache(C.ENTITY_ALL, True if C.bool(value) else DELETE_VALUE, profile=profile)
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156 return False
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157 return True
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158
663
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Goffi <goffi@goffi.org>
parents: 662
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159 def messageReceivedTrigger(self, message, post_treat, profile):
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160 """
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161 Update the entity cache when we receive a message with body.
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162 Check for a chat state in the message and signal frontends.
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163 """
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164 if not self.host.memory.getParamA(PARAM_NAME, PARAM_KEY, profile_key=profile):
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165 return True
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parents:
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166
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167 from_jid = JID(message.getAttribute("from"))
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168 if self._isMUC(from_jid, profile):
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169 from_jid = from_jid.userhostJID()
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170 else: # update entity data for one2one chat
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Goffi <goffi@goffi.org>
parents: 1253
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171 # assert from_jid.resource # FIXME: assert doesn't work on normal message from server (e.g. server announce), because there is no resource
636
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172 try:
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173 domish.generateElementsNamed(message.elements(), name="body").next()
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174 try:
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diff changeset
175 domish.generateElementsNamed(message.elements(), name="active").next()
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176 # contact enabled Chat State Notifications
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diff changeset
177 self.updateCache(from_jid, True, profile=profile)
1252
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178 except StopIteration:
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diff changeset
179 if message.getAttribute('type') == 'chat':
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180 # contact didn't enable Chat State Notifications
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diff changeset
181 self.updateCache(from_jid, False, profile=profile)
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182 return True
636
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parents:
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183 except StopIteration:
1252
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184 pass
636
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185
908
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186 # send our next "composing" states to any MUC and to the contacts who enabled the feature
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187 self._chatStateInit(from_jid, message.getAttribute("type"), profile)
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188
660
69a8bfd266a5 core, plugins: fixed bad use of children instead of elements() for domish.Element instances.
Goffi <goffi@goffi.org>
parents: 659
diff changeset
189 state_list = [child.name for child in message.elements() if
636
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diff changeset
190 message.getAttribute("type") in MESSAGE_TYPES
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parents:
diff changeset
191 and child.name in CHAT_STATES
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souliane <souliane@mailoo.org>
parents:
diff changeset
192 and child.defaultUri == NS_CHAT_STATES]
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souliane <souliane@mailoo.org>
parents:
diff changeset
193 for state in state_list:
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194 # there must be only one state according to the XEP
908
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parents: 868
diff changeset
195 if state != 'gone' or message.getAttribute('type') != 'groupchat':
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diff changeset
196 self.host.bridge.chatStateReceived(message.getAttribute("from"), state, profile)
636
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diff changeset
197 break
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198 return True
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199
922
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Goffi <goffi@goffi.org>
parents: 916
diff changeset
200 def sendMessageTrigger(self, mess_data, pre_xml_treatments, post_xml_treatments, profile):
636
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201 """
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parents:
diff changeset
202 Eventually add the chat state to the message and initiate
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souliane <souliane@mailoo.org>
parents:
diff changeset
203 the state machine when sending an "active" state.
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parents:
diff changeset
204 """
697
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Goffi <goffi@goffi.org>
parents: 663
diff changeset
205 def treatment(mess_data):
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diff changeset
206 message = mess_data['xml']
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parents: 663
diff changeset
207 to_jid = JID(message.getAttribute("to"))
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diff changeset
208 if not self._checkActivation(to_jid, forceEntityData=True, profile=profile):
724
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Goffi <goffi@goffi.org>
parents: 698
diff changeset
209 return mess_data
697
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Goffi <goffi@goffi.org>
parents: 663
diff changeset
210 try:
0c84fb112d70 core: sendMessage triggers now use a treatments deferred;
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diff changeset
211 # message with a body always mean active state
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diff changeset
212 domish.generateElementsNamed(message.elements(), name="body").next()
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diff changeset
213 message.addElement('active', NS_CHAT_STATES)
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diff changeset
214 # launch the chat state machine (init the timer)
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diff changeset
215 if self._isMUC(to_jid, profile):
1252
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diff changeset
216 to_jid = to_jid.userhostJID()
1565
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parents: 1563
diff changeset
217 self._chatStateActive(to_jid, mess_data["type"], profile)
697
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Goffi <goffi@goffi.org>
parents: 663
diff changeset
218 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
219 if "chat_state" in mess_data["extra"]:
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Goffi <goffi@goffi.org>
parents: 697
diff changeset
220 state = mess_data["extra"].pop("chat_state")
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diff changeset
221 assert state in CHAT_STATES
697
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parents: 663
diff changeset
222 message.addElement(state, NS_CHAT_STATES)
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diff changeset
223 return mess_data
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parents: 663
diff changeset
224
922
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Goffi <goffi@goffi.org>
parents: 916
diff changeset
225 post_xml_treatments.addCallback(treatment)
636
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226 return True
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parents:
diff changeset
227
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diff changeset
228 def _isMUC(self, to_jid, profile):
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diff changeset
229 """Tell if that JID is a MUC or not
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diff changeset
230
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diff changeset
231 @param to_jid (JID): full or bare JID to check
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diff changeset
232 @param profile (str): %(doc_profile)s
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diff changeset
233 @return: bool
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diff changeset
234 """
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souliane <souliane@mailoo.org>
parents: 993
diff changeset
235 try:
5ff9f9af9d1f plugin XEP-0085: use the full JID + fixes bad entity data "type" value
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diff changeset
236 type_ = self.host.memory.getEntityDatum(to_jid.userhostJID(), 'type', profile)
1290
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parents: 1264
diff changeset
237 if type_ == 'chatroom': # FIXME: should not use disco instead ?
1252
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diff changeset
238 return True
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souliane <souliane@mailoo.org>
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diff changeset
239 except (exceptions.UnknownEntityError, KeyError):
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souliane <souliane@mailoo.org>
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diff changeset
240 pass
5ff9f9af9d1f plugin XEP-0085: use the full JID + fixes bad entity data "type" value
souliane <souliane@mailoo.org>
parents: 993
diff changeset
241 return False
5ff9f9af9d1f plugin XEP-0085: use the full JID + fixes bad entity data "type" value
souliane <souliane@mailoo.org>
parents: 993
diff changeset
242
1290
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diff changeset
243 def _checkActivation(self, to_jid, forceEntityData, profile):
659
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diff changeset
244 """
1252
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parents: 993
diff changeset
245 @param to_jid: the contact's full JID (or bare if you know it's a MUC)
659
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parents: 654
diff changeset
246 @param forceEntityData: if set to True, a non-existing
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parents: 654
diff changeset
247 entity data will be considered to be True (and initialized)
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diff changeset
248 @param: current profile
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diff changeset
249 @return: True if the notifications should be sent to this JID.
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parents: 654
diff changeset
250 """
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souliane <souliane@mailoo.org>
parents: 654
diff changeset
251 # check if the parameter is active
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diff changeset
252 if not self.host.memory.getParamA(PARAM_NAME, PARAM_KEY, profile_key=profile):
b6c22d9f593a plugin xep-0085: bug fix + improvement
souliane <souliane@mailoo.org>
parents: 654
diff changeset
253 return False
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254 # check if notifications should be sent to this contact
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255 if self._isMUC(to_jid, profile):
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256 return True
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257 # FIXME: this assertion crash when we want to send a message to an online bare jid
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258 # assert to_jid.resource or not self.host.memory.isEntityAvailable(to_jid, profile) # must either have a resource, or talk to an offline contact
659
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259 try:
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260 return self.host.memory.getEntityDatum(to_jid, ENTITY_KEY, profile)
659
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261 except (exceptions.UnknownEntityError, KeyError):
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262 if forceEntityData:
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263 # enable it for the first time
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264 self.updateCache(to_jid, True, profile=profile)
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265 return True
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266 # wait for the first message before sending states
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267 return False
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268
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269 def _chatStateInit(self, to_jid, mess_type, profile):
636
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270 """
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271 Data initialization for the chat state machine.
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272
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273 @param to_jid (JID): full JID for one2one, bare JID for MUC
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274 @param mess_type (str): "one2one" or "groupchat"
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275 @param profile (str): %(doc_profile)s
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276 """
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277 if mess_type is None:
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278 return
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279 profile_map = self.map.setdefault(profile, {})
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280 if to_jid not in profile_map:
636
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281 machine = ChatStateMachine(self.host, to_jid,
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282 mess_type, profile)
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283 self.map[profile][to_jid] = machine
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284
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285 def _chatStateActive(self, to_jid, mess_type, profile_key):
636
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286 """
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287 Launch the chat state machine on "active" state.
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288
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289 @param to_jid (JID): full JID for one2one, bare JID for MUC
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290 @param mess_type (str): "one2one" or "groupchat"
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291 @param profile (str): %(doc_profile)s
636
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292 """
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293 profile = self.host.memory.getProfileName(profile_key)
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294 if profile is None:
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295 raise exceptions.ProfileUnknownError
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296 self._chatStateInit(to_jid, mess_type, profile)
636
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297 self.map[profile][to_jid]._onEvent("active")
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298
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299 def chatStateComposing(self, to_jid_s, profile_key):
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300 """Move to the "composing" state when required.
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301
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diff changeset
302 Since this method is called from the front-end, it needs to check the
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303 values of the parameter "Send chat state notifications" and the entity
654
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304 data associated to the target JID.
1252
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305
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306 @param to_jid_s (str): contact full JID as a string
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307 @param profile_key (str): %(doc_profile_key)s
636
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308 """
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309 # TODO: try to optimize this method which is called often
636
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310 profile = self.host.memory.getProfileName(profile_key)
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311 if profile is None:
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312 raise exceptions.ProfileUnknownError
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313 to_jid = JID(to_jid_s)
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314 if self._isMUC(to_jid, profile):
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315 to_jid = to_jid.userhostJID()
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316 elif not to_jid.resource:
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317 to_jid.resource = self.host.memory.getMainResource(to_jid, profile)
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diff changeset
318 if not self._checkActivation(to_jid, forceEntityData=False, profile=profile):
659
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319 return
636
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320 try:
659
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321 self.map[profile][to_jid]._onEvent("composing")
908
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diff changeset
322 except (KeyError, AttributeError):
659
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323 # no message has been sent/received since the notifications
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324 # have been enabled, it's better to wait for a first one
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325 pass
636
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parents:
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326
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parents:
diff changeset
327
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diff changeset
328 class ChatStateMachine(object):
636
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329 """
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330 This class represents a chat state, between one profile and
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331 one target contact. A timer is used to move from one state
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332 to the other. The initialization is done through the "active"
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333 state which is internally set when a message is sent. The state
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parents:
diff changeset
334 "composing" can be set externally (through the bridge by a
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parents:
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335 frontend). Other states are automatically set with the timer.
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336 """
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parents:
diff changeset
337
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338 def __init__(self, host, to_jid, mess_type, profile):
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339 """
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340 Initialization need to store the target, message type
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341 and a profile for sending later messages.
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342 """
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343 self.host = host
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344 self.to_jid = to_jid
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345 self.mess_type = mess_type
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346 self.profile = profile
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347 self.state = None
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348 self.timer = None
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349
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diff changeset
350 def _onEvent(self, state):
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diff changeset
351 """
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
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parents:
diff changeset
352 Move to the specified state, eventually send the
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
diff changeset
353 notification to the contact (the "active" state is
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
diff changeset
354 automatically sent with each message) and set the timer.
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parents:
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355 """
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356 assert state in TRANSITIONS
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diff changeset
357 transition = TRANSITIONS[state]
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358 assert "next_state" in transition and "delay" in transition
1253
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diff changeset
359
636
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diff changeset
360 if state != self.state and state != "active":
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361 if state != 'gone' or self.mess_type != 'groupchat':
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362 # send a new message without body
1253
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diff changeset
363 log.debug(u"sending state '{state}' to {jid}".format(state=state, jid=self.to_jid.full()))
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diff changeset
364 client = self.host.getClient(self.profile)
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diff changeset
365 mess_data = {'message': None,
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diff changeset
366 'type': self.mess_type,
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diff changeset
367 'from': client.jid,
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diff changeset
368 'to': self.to_jid,
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diff changeset
369 'subject': None
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diff changeset
370 }
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diff changeset
371 self.host.generateMessageXML(mess_data)
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diff changeset
372 mess_data['xml'].addElement(state, NS_CHAT_STATES)
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parents: 1252
diff changeset
373 client.xmlstream.send(mess_data['xml'])
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diff changeset
374
636
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diff changeset
375 self.state = state
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diff changeset
376 try:
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diff changeset
377 self.timer.cancel()
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diff changeset
378 except (internet_error.AlreadyCalled, AttributeError):
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diff changeset
379 pass
636
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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380
1253
c13a46207410 plugin XEP-0085: send 'gone' state before disconnection
souliane <souliane@mailoo.org>
parents: 1252
diff changeset
381 if transition["next_state"] and transition["delay"] > 0:
1547
0632d96f08ad plugin XEP-0085: fixed bad use of threads resulting in delay and crash when stopping the backend.
Goffi <goffi@goffi.org>
parents: 1396
diff changeset
382 self.timer = reactor.callLater(transition["delay"], self._onEvent, transition["next_state"])
636
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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383
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
diff changeset
384
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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385 class XEP_0085_handler(XMPPHandler):
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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386 implements(iwokkel.IDisco)
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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387
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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388 def __init__(self, plugin_parent, profile):
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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389 self.plugin_parent = plugin_parent
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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390 self.host = plugin_parent.host
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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391 self.profile = profile
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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392
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
diff changeset
393 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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394 return [disco.DiscoFeature(NS_CHAT_STATES)]
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
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395
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
diff changeset
396 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
7ea6d5a86e58 plugin XEP-0085: Chat State Notifications
souliane <souliane@mailoo.org>
parents:
diff changeset
397 return []