Source code for pyface.viewer.tree_label_provider
# (C) Copyright 2005-2022 Enthought, Inc., Austin, TX
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#
# 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
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""" Base class for all tree label providers. """
from .label_provider import LabelProvider
[docs]class TreeLabelProvider(LabelProvider):
""" Base class for all tree label providers.
By default an element has no label image, and 'str' is used to generate its
label text.
"""
# ------------------------------------------------------------------------
# 'LabelProvider' interface.
# ------------------------------------------------------------------------
[docs] def set_text(self, viewer, element, text):
""" Sets the text representation of a node.
Returns True if setting the text succeeded, otherwise False.
"""
return len(text.strip()) > 0
# ------------------------------------------------------------------------
# 'TreeLabelProvider' interface.
# ------------------------------------------------------------------------
[docs] def get_drag_value(self, viewer, element):
""" Get the value that is dragged for an element.
By default the drag value is the element itself.
"""
return element
[docs] def is_collapsible(self, viewer, element):
""" Returns True is the element is collapsible, otherwise False. """
return True
[docs] def is_expandable(self, viewer, node):
""" Returns True is the node is expandanble, otherwise False. """
return True
