wx.lib.pubsub.core.callables.CallArgsInfo

Represent the “signature” or protocol of a listener in the context of topics.

Class Hierarchy

Inheritance diagram for class CallArgsInfo:

Methods Summary

__init__	Inputs
getAllArgs
getOptionalArgs
getRequiredArgs	Return a tuple of names indicating which call arguments

Class API

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class CallArgsInfo

Represent the “signature” or protocol of a listener in the context of topics.

Methods

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__init__(self, func, firstArgIdx)

Inputs: - Args and defaultVals are the complete set of arguments and

default values as obtained form inspect.getargspec();

• The firstArgIdx points to the first item in args that is of use, so it is typically 0 if listener is a function, and 1 if listener is a method.
• The acceptsAllKwargs should be true if the listener has **kwargs in its protocol.

After construction, - self.allParams will contain the subset of ‘args’ without first

firstArgIdx items,

• self.numRequired will indicate number of required arguments (ie self.allParams[:self.numRequired] are the required args names);
• self.acceptsAllKwargs = acceptsAllKwargs
• self.autoTopicArgName will be the name of argument in which to put the topic object for which pubsub message is sent, or None. This is identified by the argument that has a default value of AUTO_TOPIC.

For instance, listener(self, arg1, arg2=AUTO_TOPIC, arg3=None) will have self.allParams = (arg1, arg2, arg3), self.numRequired=1, and self.autoTopicArgName = ‘arg2’, whereas listener(self, arg1, arg3=None) will have self.allParams = (arg1, arg3), self.numRequired=1, and self.autoTopicArgName = None.

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getAllArgs(self)

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getOptionalArgs(self)

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getRequiredArgs(self)

Return a tuple of names indicating which call arguments are required to be present when pub.sendMessage(...) is called.