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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 controller that has a static list of pages. """
# Enthought library imports.
from enthought.traits.api import List, Property
# Local imports.
from wizard_controller import WizardController
from wizard_page import WizardPage
class SimpleWizardController(WizardController):
""" A wizard controller that has a static list of pages. """
#### 'SimpleWizardController' interface ###################################
# The pages in the wizard.
pages = Property(List(WizardPage))
#### Private interface ####################################################
# Shadow trait for the 'pages' property.
_pages = List(WizardPage)
###########################################################################
# 'WizardController' interface.
###########################################################################
def get_first_page(self):
""" Returns the first page. """
return self._pages[0]
def get_next_page(self, page):
""" Returns the next page. """
index = self._pages.index(page)
return self._pages[index + 1]
def get_previous_page(self, page):
""" Returns the previous page. """
index = self._pages.index(page)
return self._pages[index - 1]
def is_first_page(self, page):
""" Is the page the first page? """
return page is self._pages[0]
def is_last_page(self, page):
""" Is the page the last page? """
return page is self._pages[-1]
def dispose_pages(self):
""" Dispose the wizard pages. """
for page in self._pages:
page.dispose_page()
return
###########################################################################
# 'SimpleWizardController' interface.
###########################################################################
def _get_pages(self):
""" Returns the pages in the wizard. """
return self._pages[:]
def _set_pages(self, pages):
""" Sets the pages in the wizard. """
self._pages = pages
return
###########################################################################
# Private interface.
###########################################################################
def _update(self):
""" Checks the complettion status of the controller. """
# The entire wizard is complete when ALL pages are complete.
for page in self._pages:
if not page.complete:
self.complete = False
break
else:
self.complete = True
return
#### Trait event handlers #################################################
#### Static ####
def _current_page_changed(self, old, new):
""" Called when the current page is changed. """
if old is not None:
old.on_trait_change(self._on_page_complete, 'complete',remove=True)
if new is not None:
new.on_trait_change(self._on_page_complete, 'complete')
self._update()
return
#### Dynamic ####
def _on_page_complete(self, obj, trait_name, old, new):
""" Called when the current page is complete. """
self._update()
return
#### EOF ######################################################################
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