mirror of
https://github.com/correl/SleekXMPP.git
synced 2024-11-24 11:09:58 +00:00
79 lines
2.9 KiB
Python
79 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
"""
|
|
sleekxmpp.xmlstream.handler.callback
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Part of SleekXMPP: The Sleek XMPP Library
|
|
|
|
:copyright: (c) 2011 Nathanael C. Fritz
|
|
:license: MIT, see LICENSE for more details
|
|
"""
|
|
|
|
from sleekxmpp.xmlstream.handler.base import BaseHandler
|
|
|
|
|
|
class Callback(BaseHandler):
|
|
|
|
"""
|
|
The Callback handler will execute a callback function with
|
|
matched stanzas.
|
|
|
|
The handler may execute the callback either during stream
|
|
processing or during the main event loop.
|
|
|
|
Callback functions are all executed in the same thread, so be aware if
|
|
you are executing functions that will block for extended periods of
|
|
time. Typically, you should signal your own events using the SleekXMPP
|
|
object's :meth:`~sleekxmpp.xmlstream.xmlstream.XMLStream.event()`
|
|
method to pass the stanza off to a threaded event handler for further
|
|
processing.
|
|
|
|
|
|
:param string name: The name of the handler.
|
|
:param matcher: A :class:`~sleekxmpp.xmlstream.matcher.base.MatcherBase`
|
|
derived object for matching stanza objects.
|
|
:param pointer: The function to execute during callback.
|
|
:param bool thread: **DEPRECATED.** Remains only for
|
|
backwards compatibility.
|
|
:param bool once: Indicates if the handler should be used only
|
|
once. Defaults to False.
|
|
:param bool instream: Indicates if the callback should be executed
|
|
during stream processing instead of in the
|
|
main event loop.
|
|
:param stream: The :class:`~sleekxmpp.xmlstream.xmlstream.XMLStream`
|
|
instance this handler should monitor.
|
|
"""
|
|
|
|
def __init__(self, name, matcher, pointer, thread=False,
|
|
once=False, instream=False, stream=None):
|
|
BaseHandler.__init__(self, name, matcher, stream)
|
|
self._pointer = pointer
|
|
self._once = once
|
|
self._instream = instream
|
|
|
|
def prerun(self, payload):
|
|
"""Execute the callback during stream processing, if
|
|
the callback was created with ``instream=True``.
|
|
|
|
:param payload: The matched
|
|
:class:`~sleekxmpp.xmlstream.stanzabase.ElementBase` object.
|
|
"""
|
|
if self._once:
|
|
self._destroy = True
|
|
if self._instream:
|
|
self.run(payload, True)
|
|
|
|
def run(self, payload, instream=False):
|
|
"""Execute the callback function with the matched stanza payload.
|
|
|
|
:param payload: The matched
|
|
:class:`~sleekxmpp.xmlstream.stanzabase.ElementBase` object.
|
|
:param bool instream: Force the handler to execute during stream
|
|
processing. This should only be used by
|
|
:meth:`prerun()`. Defaults to ``False``.
|
|
"""
|
|
if not self._instream or instream:
|
|
self._pointer(payload)
|
|
if self._once:
|
|
self._destroy = True
|
|
del self._pointer
|