From 2db58930a6f8c955c4d437657bd07e2939a705f2 Mon Sep 17 00:00:00 2001 From: James Taylor Date: Sun, 16 Jun 2019 16:16:03 -0700 Subject: Convert watch page to flask framework --- python/flask/signals.py | 57 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 python/flask/signals.py (limited to 'python/flask/signals.py') diff --git a/python/flask/signals.py b/python/flask/signals.py new file mode 100644 index 0000000..18f2630 --- /dev/null +++ b/python/flask/signals.py @@ -0,0 +1,57 @@ +# -*- coding: utf-8 -*- +""" + flask.signals + ~~~~~~~~~~~~~ + + Implements signals based on blinker if available, otherwise + falls silently back to a noop. + + :copyright: © 2010 by the Pallets team. + :license: BSD, see LICENSE for more details. +""" + +signals_available = False +try: + from blinker import Namespace + signals_available = True +except ImportError: + class Namespace(object): + def signal(self, name, doc=None): + return _FakeSignal(name, doc) + + class _FakeSignal(object): + """If blinker is unavailable, create a fake class with the same + interface that allows sending of signals but will fail with an + error on anything else. Instead of doing anything on send, it + will just ignore the arguments and do nothing instead. + """ + + def __init__(self, name, doc=None): + self.name = name + self.__doc__ = doc + def _fail(self, *args, **kwargs): + raise RuntimeError('signalling support is unavailable ' + 'because the blinker library is ' + 'not installed.') + send = lambda *a, **kw: None + connect = disconnect = has_receivers_for = receivers_for = \ + temporarily_connected_to = connected_to = _fail + del _fail + +# The namespace for code signals. If you are not Flask code, do +# not put signals in here. Create your own namespace instead. +_signals = Namespace() + + +# Core signals. For usage examples grep the source code or consult +# the API documentation in docs/api.rst as well as docs/signals.rst +template_rendered = _signals.signal('template-rendered') +before_render_template = _signals.signal('before-render-template') +request_started = _signals.signal('request-started') +request_finished = _signals.signal('request-finished') +request_tearing_down = _signals.signal('request-tearing-down') +got_request_exception = _signals.signal('got-request-exception') +appcontext_tearing_down = _signals.signal('appcontext-tearing-down') +appcontext_pushed = _signals.signal('appcontext-pushed') +appcontext_popped = _signals.signal('appcontext-popped') +message_flashed = _signals.signal('message-flashed') -- cgit v1.2.3