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# (C) Copyright 2005-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in 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!
""" Abstract base class for label providers. """
from traits.api import HasTraits
class LabelProvider(HasTraits):
""" Abstract base class for label providers.
By default an element has no label image, and 'str' is used to generate its
label text.
"""
# ------------------------------------------------------------------------
# 'LabelProvider' interface.
# ------------------------------------------------------------------------
def get_image(self, viewer, element):
""" Returns the label image for an element. """
return None
def get_text(self, viewer, element):
""" Returns the label text for an element. """
return str(element)
def set_text(self, tree, element, text):
""" Sets the text representation of a node.
Returns True if setting the text succeeded, otherwise False.
"""
return True
def is_editable(self, viewer, element):
""" Can the label text be changed via the viewer? """
return False
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