Source code for pyface.wizard.chained_wizard

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""" A wizard model that can be chained with other wizards. """


from traits.api import Instance, observe


from .i_wizard import IWizard
from .wizard import Wizard


[docs]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 ---- @observe("next_wizard") def _reset_next_controller_and_update(self, event): """ Handle the next wizard being changed. """ if event.new is not None: self.controller.next_controller = event.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() @observe("controller") def _reset_traits_on_controller_and_update(self, event): """ handle the controller being changed. """ if event.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