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# Slixmpp: The Slick XMPP Library
# Copyright (C) 2011 Nathanael C. Fritz, Lance J.T. Stout
# This file is part of Slixmpp.
# See the file LICENSE for copying permissio
import slixmpp
from slixmpp.xmlstream import ElementBase, ET
class ChatState(ElementBase):
"""
Example chat state stanzas:
::
<message>
<active xmlns="http://jabber.org/protocol/chatstates" />
</message>
<message>
<paused xmlns="http://jabber.org/protocol/chatstates" />
</message>
"""
name = ''
namespace = 'http://jabber.org/protocol/chatstates'
plugin_attrib = 'chat_state'
interfaces = {'chat_state'}
sub_interfaces = interfaces
is_extension = True
states = {'active', 'composing', 'gone', 'inactive', 'paused'}
def setup(self, xml=None):
self.xml = ET.Element('')
return True
def get_chat_state(self):
parent = self.parent()
for state in self.states:
state_xml = parent.xml.find('{%s}%s' % (self.namespace, state))
if state_xml is not None:
self.xml = state_xml
return state
return ''
def set_chat_state(self, state):
self.del_chat_state()
parent = self.parent()
if state in self.states:
self.xml = ET.Element('{%s}%s' % (self.namespace, state))
parent.append(self.xml)
elif state not in [None, '']:
raise ValueError('Invalid chat state')
def del_chat_state(self):
parent = self.parent()
for state in self.states:
state_xml = parent.xml.find('{%s}%s' % (self.namespace, state))
if state_xml is not None:
self.xml = ET.Element('')
parent.xml.remove(state_xml)
class Active(ChatState):
name = 'active'
class Composing(ChatState):
name = 'composing'
class Gone(ChatState):
name = 'gone'
class Inactive(ChatState):
name = 'inactive'
class Paused(ChatState):
name = 'paused'
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