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#------------------------------------------------------------------------------
# Copyright (c) 2005, Enthought, Inc.
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in enthought/LICENSE.txt and may be redistributed only
# under the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
# Thanks for using Enthought open source!
#
# Author: Enthought, Inc.
# Description: <Enthought naming package component>
#------------------------------------------------------------------------------
""" A tree view of a naming system. """
# Enthought library imports.
from apptools.naming.api import OperationNotSupportedError
from pyface.tree.api import NodeTree
from traits.api import Instance
# Local imports.
from naming_tree_model import NamingTreeModel
class NamingTree(NodeTree):
""" A tree view of a naming system. """
#### 'Tree' interface #####################################################
# The model that provides the data for the tree.
model = Instance(NamingTreeModel)
###########################################################################
# 'Tree' interface.
###########################################################################
#### Trait initializers ###################################################
def _model_default(self):
""" Initializes the model trait. """
return NamingTreeModel()
###########################################################################
# 'NamingTree' interface.
###########################################################################
def ensure_visible(self, node):
""" Make sure that the specified node is visible. """
try:
components = node.namespace_name.split('/')
# Make sure that the tree is expanded down to the context that
# contains the node.
binding = self.root
for atom in components[:-1]:
binding = binding.obj.lookup_binding(atom)
self.expand(binding)
# The context is expanded so we know that the node will be in the
# node to Id map.
wxid = self._node_to_id_map.get(self.model.get_key(node), None)
self.control.EnsureVisible(wxid)
# We need 'namespace_name' to make this work. If we don't have it
# then we simply cannot do this!
except OperationNotSupportedError:
binding = None
return binding
##### EOF #####################################################################
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