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#------------------------------------------------------------------------------
# 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.
"""
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
from pyface.qt import QtCore, QtGui
# FIXME: ToolkitEditorFactory is a proxy class defined here just for backward
# compatibility. The class has been moved to the
# traitsui.editors.boolean_editor file.
from traitsui.editors.boolean_editor \
import ToolkitEditorFactory
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
#-------------------------------------------------------------------------------
# 'SimpleEditor' class:
#-------------------------------------------------------------------------------
class SimpleEditor ( Editor ):
""" Simple style of editor for Boolean values, which displays a check box.
"""
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
def init ( self, parent ):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
self.control = QtGui.QCheckBox()
self.control.connect(self.control, QtCore.SIGNAL('stateChanged(int)'),
self.update_object)
self.set_tooltip()
#---------------------------------------------------------------------------
# Handles the user clicking on the checkbox:
#---------------------------------------------------------------------------
def update_object ( self, state ):
""" Handles the user clicking the checkbox.
"""
self.value = bool(state)
#---------------------------------------------------------------------------
# Updates the editor when the object trait changes external to the editor:
#---------------------------------------------------------------------------
def update_editor ( self ):
""" Updates the editor when the object trait changes externally to the
editor.
"""
if self.value:
self.control.setCheckState(QtCore.Qt.Checked)
else:
self.control.setCheckState(QtCore.Qt.Unchecked)
#-------------------------------------------------------------------------------
# 'ReadonlyEditor' class:
#-------------------------------------------------------------------------------
class ReadonlyEditor ( Editor ):
""" Read-only style of editor for Boolean values, which displays static text
of either "True" or "False".
"""
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
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.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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