wx.lib.pubsub.core.topictreetraverser.TopicTreeTraverser

Supports taking action on every topic in the topic tree. The traverse() method traverses a topic tree and calls visitor._onTopic() for each topic in the tree that satisfies visitor._accept(). Additionally it calls visitor._startChildren() whenever it starts traversing the subtopics of a topic, and visitor._endChildren() when it is done with the subtopics. Finally, it calls visitor._doneTraversal() when traversal has been completed. The visitor must therefore adhere to the ITopicTreeVisitor interface.

Class Hierarchy

Inheritance diagram for class TopicTreeTraverser:

Methods Summary

__init__	The visitor, if given, must adhere to API of
setVisitor	The visitor must adhere to API of ITopicTreeVisitor.
traverse	Start traversing tree at topicObj. Note that topicObj is a

Class API

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class TopicTreeTraverser

Supports taking action on every topic in the topic tree. The traverse() method traverses a topic tree and calls visitor._onTopic() for each topic in the tree that satisfies visitor._accept(). Additionally it calls visitor._startChildren() whenever it starts traversing the subtopics of a topic, and visitor._endChildren() when it is done with the subtopics. Finally, it calls visitor._doneTraversal() when traversal has been completed. The visitor must therefore adhere to the ITopicTreeVisitor interface.

Methods

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__init__(self, visitor = None)

The visitor, if given, must adhere to API of ITopicTreeVisitor. The visitor can be changed or set via setVisitor(visitor) before calling traverse().

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setVisitor(self, visitor)

The visitor must adhere to API of ITopicTreeVisitor.

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traverse(self, topicObj, how=DEPTH, onlyFiltered=True)

Start traversing tree at topicObj. Note that topicObj is a Topic object, not a topic name. The how defines if tree should be traversed breadth or depth first. If onlyFiltered is False, then all nodes are accepted (_accept(node) not called).

This method can be called multiple times.