1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
# (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!
""" The model for list boxes. """
from traits.api import Event, HasTraits
# Classes for event traits.
class ListModelEvent(object):
""" Information about list model changes. """
class ListBoxModel(HasTraits):
""" The model for list boxes. """
# Events ----
#: Fired when the contents of the list have changed.
list_changed = Event()
def get_item_count(self):
""" Get the number of items in the list.
Returns
-------
item_count : int
The number of items in the list.
"""
raise NotImplementedError()
def get_item_at(self, index):
""" Returns the item at the specified index.
Parameters
----------
index : int
The index to return the value of.
Returns
-------
label, item : str, any
The user-visible string and model data of the item.
"""
raise NotImplementedError()
def fire_list_changed(self):
""" Invoke this method when the list has changed. """
self.list_changed = ListModelEvent()
|
