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.. include:: headings.inc

.. currentmodule:: wx.lib.pubsub.core.topicdefnprovider

.. highlight:: python



.. _wx.lib.pubsub.core.topicdefnprovider.ITopicDefnProvider:

==========================================================================================================================================
|phoenix_title|  **wx.lib.pubsub.core.topicdefnprovider.ITopicDefnProvider**
==========================================================================================================================================

All topic definition providers added via pub.addTopicDefnProvider()
must have this interface. Derived classes must override the getDefn(),
getTreeDoc() and topicNames() methods.



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|class_hierarchy| Class Hierarchy
=================================

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   Inheritance diagram for class <strong>ITopicDefnProvider</strong>:
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|sub_classes| Known Subclasses
==============================

:class:`wx.lib.pubsub.core.topicdefnprovider.TopicDefnProvider`

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|method_summary| Methods Summary
================================

================================================================================ ================================================================================
:meth:`~wx.lib.pubsub.core.topicdefnprovider.ITopicDefnProvider.getDefn`         Must return a pair (string, ArgSpecGiven) for given topic.
:meth:`~wx.lib.pubsub.core.topicdefnprovider.ITopicDefnProvider.getTreeDoc`      Get the docstring for the topic tree.
:meth:`~wx.lib.pubsub.core.topicdefnprovider.ITopicDefnProvider.topicNames`      Return an iterator over topic names available from this provider.
================================================================================ ================================================================================


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|api| Class API
===============


.. class:: ITopicDefnProvider

   All topic definition providers added via pub.addTopicDefnProvider()
   must have this interface. Derived classes must override the getDefn(),
   getTreeDoc() and topicNames() methods.

   .. method:: getDefn(self, topicNameTuple)

      Must return a pair (string, ArgSpecGiven) for given topic.
      The first item is a description for topic, the second item
      contains the message data specification (MDS). Note topic name
      is in tuple format ('a', 'b', 'c') rather than 'a.b.c'. 


   .. method:: getTreeDoc(self)

      Get the docstring for the topic tree.


   .. method:: topicNames(self)

      Return an iterator over topic names available from this provider.
      Note that the topic names should be in tuple rather than dotted-string
      format so as to be compatible with getDefn().