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# (C) Copyright 2005-2023 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!
"""
API for the ``pyface.wizard`` subpackage.
- :class:`~.WizardPage`
- :class:`~.Wizard`
- :class:`~.WizardController`
- :class:`~.ChainedWizard`
- :class:`~.ChainedWizardController`
Interfaces
----------
- :class:`~.IWizardPage`
- :class:`~.IWizard`
- :class:`~.IWizardController`
"""
from .chained_wizard_controller import ChainedWizardController
from .i_wizard_page import IWizardPage
from .i_wizard import IWizard
from .i_wizard_controller import IWizardController
from .wizard_controller import WizardController
# ----------------------------------------------------------------------------
# Deferred imports
# ----------------------------------------------------------------------------
# These imports have the side-effect of performing toolkit selection
_toolkit_imports = {
'Wizard': 'wizard',
'WizardPage': 'wizard_page',
}
# These are pyface.* imports that have selection as a side-effect
_relative_imports = {
'ChainedWizard': "chained_wizard",
}
def __getattr__(name):
"""Lazily load attributes with side-effects
In particular, lazily load toolkit backend names. For efficiency, lazily
loaded objects are injected into the module namespace
"""
# sentinel object for no result
not_found = object()
result = not_found
if name in _relative_imports:
from importlib import import_module
source = _relative_imports[name]
module = import_module(f"pyface.wizard.{source}")
result = getattr(module, name)
elif name in _toolkit_imports:
from pyface.toolkit import toolkit_object
source = _toolkit_imports[name]
result = toolkit_object(f"wizard.{source}:{name}")
if result is not_found:
raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
globals()[name] = result
return result
# ----------------------------------------------------------------------------
# Introspection support
# ----------------------------------------------------------------------------
# the list of available names we report for introspection purposes
_extra_names = set(_toolkit_imports) | set(_relative_imports)
def __dir__():
return sorted(set(globals()) | _extra_names)
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