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.. include:: headings.inc

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

.. highlight:: python



.. _wx.lib.pubsub.core.topicdefnprovider.TopicDefnProvider:

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

Default implementation of the ITopicDefnProvider API. This
implementation accepts several formats for the topic tree 
source data and delegates to a registered ITopicDefnDeserializer
that converts source data into topic definitions. 

This provider is instantiated automatically by 
``pub.addTopicDefnProvider(source, format)``
when source is *not* an ITopicDefnProvider.

Additional de-serializers can be registered via registerTypeForImport().



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

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   Inheritance diagram for class <strong>TopicDefnProvider</strong>:
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|super_classes| Known Superclasses
==================================

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

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

===================================================================================== ================================================================================
:meth:`~wx.lib.pubsub.core.topicdefnprovider.TopicDefnProvider.__init__`              Find the correct de-serializer class from registry for the given
:meth:`~wx.lib.pubsub.core.topicdefnprovider.TopicDefnProvider.getDefn`               
:meth:`~wx.lib.pubsub.core.topicdefnprovider.TopicDefnProvider.getTreeDoc`            
:meth:`~wx.lib.pubsub.core.topicdefnprovider.TopicDefnProvider.initTypeRegistry`      
:meth:`~wx.lib.pubsub.core.topicdefnprovider.TopicDefnProvider.registerTypeForImport` If a new type of importer is defined for topic definitions, it
:meth:`~wx.lib.pubsub.core.topicdefnprovider.TopicDefnProvider.topicNames`            
===================================================================================== ================================================================================


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


.. class:: TopicDefnProvider(ITopicDefnProvider)

   Default implementation of the ITopicDefnProvider API. This
   implementation accepts several formats for the topic tree 
   source data and delegates to a registered ITopicDefnDeserializer
   that converts source data into topic definitions. 
   
   This provider is instantiated automatically by 
   ``pub.addTopicDefnProvider(source, format)``
   when source is *not* an ITopicDefnProvider.
   
   Additional de-serializers can be registered via registerTypeForImport().

   .. method:: __init__(self, source, format, \*\*providerKwargs)

      Find the correct de-serializer class from registry for the given
      format; instantiate it with given source and providerKwargs; get 
      all available topic definitions.


   .. method:: getDefn(self, topicNameTuple)


   .. method:: getTreeDoc(self)


   .. classmethod:: initTypeRegistry(cls)


   .. classmethod:: registerTypeForImport(cls, typeName, providerClassObj)

      If a new type of importer is defined for topic definitions, it
      can be registered with pubsub by providing a name for the new 
      importer (typeName), and the class to instantiate when 
      pub.addTopicDefnProvider(obj, typeName) is called. For instance, ::  
      
          from pubsub.core.topicdefnprovider import ITopicDefnDeserializer
          class SomeNewImporter(ITopicDefnDeserializer): 
              ...
          TopicDefnProvider.registerTypeForImport('some name', SomeNewImporter)
          # will instantiate SomeNewImporter(source)
          pub.addTopicDefnProvider(source, 'some name') 


   .. method:: topicNames(self)