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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
# (C) Copyright 2004-2023 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!
"""
Boolean editor (checkbox or text)
A Boolean (True/False) trait is displayed and edited as a checkbox, by default.
It can also be displayed as text 'True'/'False', either editable or read-only.
This example also shows how to listen for a change in a trait, and take
action when its value changes.
It also demonstrates how to add vertical space and a Label (plain text which is
not editable.)
Please refer to the `BooleanEditor API docs`_ for further information.
.. _BooleanEditor API docs: https://docs.enthought.com/traitsui/api/traitsui.editors.boolean_editor.html#traitsui.editors.boolean_editor.BooleanEditor
"""
from traits.api import HasTraits, Bool, Int
from traitsui.api import Item, Label, Group, View
class BooleanEditorDemo(HasTraits):
"""Defines the main BooleanEditor demo class."""
# a boolean trait to view:
my_boolean_trait = Bool()
count_changes = Int(0)
# When the trait's value changes, do something.
# The listener method is named '_TraitName_changed', where
# 'TraitName' is the name of the trait being monitored.
def _my_boolean_trait_changed(self):
self.count_changes += 1
# Demo view
traits_view = View(
'10', # vertical space
Item('my_boolean_trait', style='simple', id='simple'),
'10', # vertical space
# We put this label in its own group so that it will be left justified.
# Otherwise it will line up with other edit fields (indented):
Group(
Label(
'The same Boolean trait can also be displayed and edited as '
'text (True/False):'
)
),
'10', # vertical space
Item(
'my_boolean_trait',
style='readonly',
label='Read-only style',
id='readonly',
),
Item('my_boolean_trait', style='text', label='Text style', id='text'),
'10',
'count_changes',
title='Boolean trait',
buttons=['OK'],
resizable=True,
)
# Create the demo view (but do not yet display it):
demo = BooleanEditorDemo()
# Display and edit the demo (if invoked from the command line):
if __name__ == '__main__':
demo.configure_traits()
|
