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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!
""" A pager contains a set of pages, but only shows one at a time. """
import wx
from wx.lib.scrolledpanel import ScrolledPanel as wxScrolledPanel
class Pager(wxScrolledPanel):
""" A pager contains a set of pages, but only shows one at a time. """
def __init__(self, parent, wxid, **kw):
""" Creates a new pager. """
# Base-class constructor.
wxScrolledPanel.__init__(self, parent, wxid, **kw)
self.SetupScrolling()
# The pages in the pager!
self._pages = {} # { str name : wx.Window page }
# The page that is currently displayed.
self._current_page = None
# Create the widget!
self._create_widget()
return
# ------------------------------------------------------------------------
# 'Pager' interface.
# ------------------------------------------------------------------------
def add_page(self, name, page):
""" Adds a page with the specified name. """
self._pages[name] = page
# Make the pager panel big enought ot hold the biggest page.
#
# fixme: I have a feeling this needs some testing!
sw, sh = self.GetSize()
pw, ph = page.GetSize()
self.SetSize((max(sw, pw), max(sh, ph)))
# All pages are added as hidden. Use 'show_page' to make a page
# visible.
page.Show(False)
return page
def show_page(self, name):
""" Shows the page with the specified name. """
# Hide the current page (if one is displayed).
if self._current_page is not None:
self._hide_page(self._current_page)
# Show the specified page.
page = self._show_page(self._pages[name])
# Resize the panel to match the sizer's minimal size.
self._sizer.Fit(self)
return page
# ------------------------------------------------------------------------
# Private interface.
# ------------------------------------------------------------------------
def _create_widget(self):
""" Creates the widget. """
self._sizer = sizer = wx.BoxSizer(wx.VERTICAL)
self.SetSizer(sizer)
self.SetAutoLayout(True)
def _hide_page(self, page):
""" Hides the specified page. """
page.Show(False)
self._sizer.Remove(page)
def _show_page(self, page):
""" Shows the specified page. """
page.Show(True)
self._sizer.Add(page, 1, wx.EXPAND)
self._current_page = page
return page
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