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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!
# (C) Copyright 2008 Riverbank Computing Limited
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD license.
# However, when used with the GPL version of PyQt the additional terms described in the PyQt GPL exception also apply
""" A page in a wizard. """
from pyface.qt import QtGui
from traits.api import Bool, HasTraits, provides, Str, Tuple
from pyface.wizard.i_wizard_page import IWizardPage, MWizardPage
@provides(IWizardPage)
class WizardPage(MWizardPage, HasTraits):
""" The toolkit specific implementation of a WizardPage.
See the IWizardPage interface for the API documentation.
"""
# 'IWizardPage' interface ---------------------------------------------#
id = Str()
next_id = Str()
last_page = Bool(False)
complete = Bool(False)
heading = Str()
subheading = Str()
size = Tuple()
# ------------------------------------------------------------------------
# 'IWizardPage' interface.
# ------------------------------------------------------------------------
def create_page(self, parent):
""" Creates the wizard page. """
content = self._create_page_content(parent)
# We allow some flexibility with the sort of control we are given.
if not isinstance(content, QtGui.QWizardPage):
wp = _WizardPage(self)
if isinstance(content, QtGui.QLayout):
wp.setLayout(content)
else:
assert isinstance(content, QtGui.QWidget)
lay = QtGui.QVBoxLayout()
lay.addWidget(content)
wp.setLayout(lay)
content = wp
# Honour any requested page size.
if self.size:
width, height = self.size
if width > 0:
content.setMinimumWidth(width)
if height > 0:
content.setMinimumHeight(height)
content.setTitle(self.heading)
content.setSubTitle(self.subheading)
return content
# ------------------------------------------------------------------------
# Protected 'IWizardPage' interface.
# ------------------------------------------------------------------------
def _create_page_content(self, parent):
""" Creates the actual page content. """
# Dummy implementation - override!
control = QtGui.QWidget(parent)
palette = control.palette()
palette.setColor(QtGui.QPalette.ColorRole.Window, QtGui.QColor("yellow"))
control.setPalette(palette)
control.setAutoFillBackground(True)
return control
class _WizardPage(QtGui.QWizardPage):
""" A QWizardPage sub-class that hooks into the IWizardPage's 'complete'
trait. """
def __init__(self, page):
""" Initialise the object. """
QtGui.QWizardPage.__init__(self)
self.pyface_wizard = None
page.observe(self._on_complete_changed, "complete")
self._page = page
def initializePage(self):
""" Reimplemented to call the IWizard's 'next'. """
if self.pyface_wizard is not None:
self.pyface_wizard.next()
def cleanupPage(self):
""" Reimplemented to call the IWizard's 'previous'. """
if self.pyface_wizard is not None:
self.pyface_wizard.previous()
def isComplete(self):
""" Reimplemented to return the state of the 'complete' trait. """
return self._page.complete
def _on_complete_changed(self, event):
""" The trait handler for when the page's completion state changes. """
self.completeChanged.emit()
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