wx.lib.pubsub.core.listenerbase.ListenerBase

Base class for listeners, ie. callables subscribed to pubsub.

Class Hierarchy

Inheritance diagram for class ListenerBase:

Methods Summary

__init__	Use callable_ as a listener of topicName. The argsInfo is the
getCallable	Get the listener that was given at initialization. Note that
isDead	Return True if this listener died (has been garbage collected)
module	Get the module in which the callable was defined.
name	Return a human readable name for listener, based on the
typeName	Get a type name for the listener. This is a class name or
wantsAllMessageData	True if this listener wants all message data: it has a **kwargs argument
wantsTopicObjOnCall	True if this listener wants topic object: it has a arg=pub.AUTO_TOPIC

Class API

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class ListenerBase

Base class for listeners, ie. callables subscribed to pubsub.

Methods

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__init__(self, callable_, argsInfo, onDead=None)

Use callable_ as a listener of topicName. The argsInfo is the return value from a Validator, ie an instance of callables.CallArgsInfo. If given, the onDead will be called with self as parameter, if/when callable_ gets garbage collected (callable_ is held only by weak reference).

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getCallable(self)

Get the listener that was given at initialization. Note that this could be None if it has been garbage collected (e.g. if it was created as a wrapper of some other callable, and not stored locally).

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isDead(self)

Return True if this listener died (has been garbage collected)

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module(self)

Get the module in which the callable was defined.

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name(self)

Return a human readable name for listener, based on the listener’s type name and its id (as obtained from id(listener)). If caller just needs name based on type info, specify instance=False. Note that the listener’s id() was saved at construction time (since it may get garbage collected at any time) so the return value of name() is not necessarily unique if the callable has died (because id’s can be re-used after garbage collection).

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typeName(self)

Get a type name for the listener. This is a class name or function name, as appropriate.

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wantsAllMessageData(self)

True if this listener wants all message data: it has a **kwargs argument

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wantsTopicObjOnCall(self)

True if this listener wants topic object: it has a arg=pub.AUTO_TOPIC