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# (C) Copyright 2008-2023 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!
# ------------------------------------------------------------------------------
# Copyright (c) 2007, Riverbank Computing Limited
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD license.
# However, when used with the GPL version of PyQt the additional terms
# described in the PyQt GPL exception also apply
#
# Author: Riverbank Computing Limited
# ------------------------------------------------------------------------------
""" Defines the various Boolean editors for the PyQt user interface toolkit.
"""
from pyface.qt import QtCore, QtGui
from .editor import Editor
# This needs to be imported in here for use by the editor factory for boolean
# editors (declared in traitsui). The editor factory's text_editor
# method will use the TextEditor in the ui.
from .text_editor import SimpleEditor as TextEditor
from .constants import ReadonlyColor
class SimpleEditor(Editor):
"""Simple style of editor for Boolean values, which displays a check box."""
def init(self, parent):
"""Finishes initializing the editor by creating the underlying toolkit
widget.
"""
self.control = QtGui.QCheckBox()
self.control.stateChanged.connect(self.update_object)
self.set_tooltip()
def dispose(self):
if self.control is not None:
self.control.stateChanged.disconnect(self.update_object)
super().dispose()
def update_object(self, state):
"""Handles the user clicking the checkbox."""
self.value = bool(state)
def update_editor(self):
"""Updates the editor when the object trait changes externally to the
editor.
"""
if self.value:
self.control.setCheckState(QtCore.Qt.CheckState.Checked)
else:
self.control.setCheckState(QtCore.Qt.CheckState.Unchecked)
class ReadonlyEditor(Editor):
"""Read-only style of editor for Boolean values, which displays static text
of either "True" or "False".
"""
def init(self, parent):
"""Finishes initializing the editor by creating the underlying toolkit
widget.
"""
self.control = QtGui.QLineEdit()
self.control.setReadOnly(True)
pal = QtGui.QPalette(self.control.palette())
pal.setColor(QtGui.QPalette.ColorRole.Base, ReadonlyColor)
self.control.setPalette(pal)
# -------------------------------------------------------------------------
# Updates the editor when the object trait changes external to the editor:
#
# (Should normally be overridden in a subclass)
# -------------------------------------------------------------------------
def update_editor(self):
"""Updates the editor when the object trait changes externally to the
editor.
"""
if self.value:
self.control.setText("True")
else:
self.control.setText("False")
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