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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
# (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!
#
# Author: Enthought, Inc.
# Description: <Enthought pyface package component>
""" The Qt-specific implementation of the combo field class """
from traits.api import provides
from pyface.fields.i_combo_field import IComboField, MComboField
from pyface.qt.QtCore import Qt
from pyface.qt.QtGui import QComboBox
from pyface.ui.qt.util.alignment import (
alignment_to_qalignment, qalignment_to_alignment
)
from .editable_field import EditableField
@provides(IComboField)
class ComboField(MComboField, EditableField):
""" The Qt-specific implementation of the combo field class """
# ------------------------------------------------------------------------
# IWidget interface
# ------------------------------------------------------------------------
def _create_control(self, parent):
""" Create the toolkit-specific control that represents the widget. """
control = QComboBox(parent)
control.setInsertPolicy(QComboBox.InsertPolicy.NoInsert)
control.setEditable(False)
return control
# ------------------------------------------------------------------------
# Private interface
# ------------------------------------------------------------------------
# Toolkit control interface ---------------------------------------------
def _get_control_value(self):
""" Toolkit specific method to get the control's value. """
index = self.control.currentIndex()
if index != -1:
return self.control.itemData(index)
else:
raise IndexError("no value selected")
def _get_control_text(self):
""" Toolkit specific method to get the control's value. """
index = self.control.currentIndex()
if index != -1:
return self.control.itemData(index, Qt.ItemDataRole.DisplayRole)
else:
raise IndexError("no value selected")
def _set_control_value(self, value):
""" Toolkit specific method to set the control's value. """
index = self.values.index(value)
self.control.setCurrentIndex(index)
self.control.activated.emit(index)
def _observe_control_value(self, remove=False):
""" Toolkit specific method to change the control value observer. """
if remove:
self.control.activated.disconnect(self._update_value)
else:
self.control.activated.connect(self._update_value)
def _get_control_text_values(self):
""" Toolkit specific method to get the control's values. """
model = self.control.model()
values = []
for i in range(model.rowCount()):
values.append(model.item(i))
return values
def _set_control_values(self, values):
""" Toolkit specific method to set the control's values. """
current_value = self.value
self.control.clear()
for value in self.values:
item = self.formatter(value)
if isinstance(item, tuple):
image, text = item
icon = image.create_icon()
self.control.addItem(icon, text, userData=value)
else:
self.control.addItem(item, userData=value)
if current_value in values:
self._set_control_value(current_value)
else:
self._set_control_value(self.value)
def _get_control_alignment(self):
""" Toolkit specific method to get the control's alignment. """
# only works if combobox is ieditable, which currently is always False
line_edit = self.control.lineEdit()
if line_edit is not None:
return qalignment_to_alignment(line_edit.alignment())
else:
# no widget; cheat
return self.alignment
def _set_control_alignment(self, alignment):
""" Toolkit specific method to set the control's alignment. """
line_edit = self.control.lineEdit()
if line_edit is not None:
return line_edit.setAlignment(alignment_to_qalignment(alignment))
|
