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#------------------------------------------------------------------------------
# Copyright (c) 2005, Enthought, Inc.
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in enthought/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: David C. Morrill
# Date: 10/21/2004
# Description: Define the Tkinter implementation of the various boolean editors
# and the boolean editor factory.
#
# Symbols defined: ToolkitEditorFactory
#
#------------------------------------------------------------------------------
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
import tk
from enthought.traits.api import Dict, Str, Any, true
from editor import Editor
from text_editor import SimpleEditor as TextEditor
from text_editor import ToolkitEditorFactory as EditorFactory
from helper import TkDelegate
#-------------------------------------------------------------------------------
# Trait definitions:
#-------------------------------------------------------------------------------
# Map from user input text to other value:
mapping_trait = Dict( Str, Any, { 'True': True,
'true': True,
't': True,
'yes': True,
'y': True,
'False': False,
'false': False,
'f': False,
'no': False,
'n': False,
} )
#-------------------------------------------------------------------------------
# 'ToolkitEditorFactory' class:
#-------------------------------------------------------------------------------
class ToolkitEditorFactory ( EditorFactory ):
#---------------------------------------------------------------------------
# Trait definitions:
#---------------------------------------------------------------------------
# These definitions override definitions in the 'text_editor' version:
mapping = mapping_trait # Dictionary mapping user input to other values
#---------------------------------------------------------------------------
# 'Editor' factory methods:
#---------------------------------------------------------------------------
def simple_editor ( self, ui, object, name, description, parent ):
return SimpleEditor( parent,
factory = self,
ui = ui,
object = object,
name = name,
description = description )
def text_editor ( self, ui, object, name, description, parent ):
return TextEditor( parent,
factory = self,
ui = ui,
object = object,
name = name,
description = description )
def readonly_editor ( self, ui, object, name, description, parent ):
return ReadonlyEditor( parent,
factory = self,
ui = ui,
object = object,
name = name,
description = description )
#-------------------------------------------------------------------------------
# 'SimpleEditor' class:
#-------------------------------------------------------------------------------
class SimpleEditor ( Editor ):
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
def init ( self, parent ):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
var = tk.IntVar()
self.control = control = tk.Checkbutton( parent,
text = '',
variable = var,
anchor = 'w' )
control.configure( command = TkDelegate( self.update_object,
var = var )() )
#---------------------------------------------------------------------------
# Handles the user clicking on the checkbox:
#---------------------------------------------------------------------------
def update_object ( self, delegate ):
""" Handles the user clicking on the checkbox.
"""
self.value = (delegate.var.get() != 0)
#---------------------------------------------------------------------------
# Updates the editor when the object trait changes external to the editor:
#---------------------------------------------------------------------------
def update_editor ( self ):
""" Updates the editor when the object trait changes external to the
editor.
"""
self.control.cget( 'variable' ).set( self.value )
#-------------------------------------------------------------------------------
# 'ReadonlyEditor' class:
#-------------------------------------------------------------------------------
class ReadonlyEditor ( Editor ):
#---------------------------------------------------------------------------
# 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 = tk.Label( parent, text = '', anchor = 'e' )
#---------------------------------------------------------------------------
# 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 external to the
editor.
"""
self.control.configure( text = [ 'False', 'True' ][ self.value ] )
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