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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: Enthought, Inc.
# Description: <Enthought pyface package component>
#------------------------------------------------------------------------------
""" A wizard model that can be chained with other wizards. """
# Enthought library imports.
from traits.api import Instance
# Local imports.
from .i_wizard import IWizard
from .wizard import Wizard
class ChainedWizard(Wizard):
""" A wizard model that can be chained with other wizards. """
#### 'ChainedWizard' interface ############################################
# The wizard following this wizard in the chain.
next_wizard = Instance(IWizard)
###########################################################################
# 'ChainedWizard' interface.
###########################################################################
#### Trait handlers. ######################################################
def _controller_default(self):
""" Provide a default controller. """
from chained_wizard_controller import ChainedWizardController
return ChainedWizardController()
#### Trait event handlers. ################################################
#### Static ####
def _next_wizard_changed(self, old, new):
""" Handle the next wizard being changed. """
if new is not None:
self.controller.next_controller = new.controller
if self.control is not None:
# FIXME: Do we need to call _create_buttons? Buttons would have
# added when the main dialog area was created (for the first
# wizard), and calling update should update the state of these
# buttons. Do we need to check if buttons are already present in
# the dialog area? What is use case for calling _create_buttons?
# self._create_buttons(self.control)
self._update()
return
def _controller_changed(self, old, new):
""" handle the controller being changed. """
if new is not None and self.next_wizard is not None:
self.controller.next_controller = self.next_wizard.controller
if self.control is not None:
self._update()
return
#### EOF ######################################################################
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