mirror of
https://github.com/wxWidgets/Phoenix.git
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247673201b
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@72061 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
97 lines
3.5 KiB
Python
97 lines
3.5 KiB
Python
'''
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:copyright: Copyright 2006-2009 by Oliver Schoenborn, all rights reserved.
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:license: BSD, see LICENSE.txt for details.
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'''
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from topicutils import stringize
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class ListenerNotValidatable(RuntimeError):
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'''
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Raised when an attempt is made to validate a listener relative to a
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topic that doesn't have (yet) a Listener Protocol Specification.
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'''
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def __init__(self):
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msg = 'Topics args not set yet, cannot validate listener'
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RuntimeError.__init__(self, msg)
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class UndefinedTopic(RuntimeError):
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'''
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Raised when an attempt is made to retrieve a Topic object
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for a topic name that hasn't yet been created.
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'''
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def __init__(self, topicName, msgFormat=None):
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if msgFormat is None:
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msgFormat = 'Topic "%s" doesn\'t exist'
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RuntimeError.__init__(self, msgFormat % topicName)
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class UndefinedSubtopic(UndefinedTopic):
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'''
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Raised when an attempt is made to retrieve a Topic object
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for a subtopic name that hasn't yet been created within
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its parent topic.
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'''
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def __init__(self, parentName, subName):
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msgFormat = 'Topic "%s" doesn\'t have "%%s" as subtopic' % parentName
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UndefinedTopic.__init__(self, subName, msgFormat)
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class ListenerSpecIncomplete(RuntimeError):
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'''
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Raised when an attempt is made to create a topic for which
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a specification is not available, but pub.setTopicUnspecifiedFatal()
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was called.
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'''
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def __init__(self, topicNameTuple):
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msg = "No topic specification for topic '%s'." \
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% stringize(topicNameTuple)
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RuntimeError.__init__(self, msg +
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" See pub.getOrCreateTopic(), pub.addTopicDefnProvider(), and/or pub.setTopicUnspecifiedFatal()")
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class ListenerSpecInvalid(RuntimeError):
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'''
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Raised when an attempt is made to define a topic's Listener Protocol
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Specification to something that is not valid.
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The argument names that are invalid can be put in the 'args' list,
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and the msg should say what is the problem and contain "%s" for the
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args, such as ListenerSpecInvalid('duplicate args %s', ('arg1', 'arg2')).
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'''
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def __init__(self, msg, args):
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argsMsg = msg % ','.join(args)
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RuntimeError.__init__(self, 'Invalid listener spec: ' + argsMsg)
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class ExcHandlerError(RuntimeError):
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'''
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When an exception gets raised within some listener during a
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sendMessage(), the registered handler (see pub.setListenerExcHandler())
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gets called (via its __call__ method) and the send operation can
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resume on remaining listeners. However, if the handler itself
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raises an exception while it is being called, the send operation
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must be aborted: an ExcHandlerError exception gets raised.
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'''
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def __init__(self, badExcListenerID, topicObj, origExc=None):
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'''The badExcListenerID is the name of the listener that raised
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the original exception that handler was attempting to handle.
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The topicObj is the pub.Topic object for the topic of the
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sendMessage that had an exception raised.
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The origExc is currently not used. '''
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self.badExcListenerID = badExcListenerID
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import traceback
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self.exc = traceback.format_exc()
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msg = 'The exception handler registered with pubsub raised an ' \
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+ 'exception, *while* handling an exception raised by listener ' \
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+ ' "%s" of topic "%s"):\n%s' \
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% (self.badExcListenerID, topicObj.getName(), self.exc)
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RuntimeError.__init__(self, msg)
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