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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 Layered panel. """
from traits.api import Int, provides
from pyface.qt.QtGui import QStackedWidget
from pyface.i_layered_panel import ILayeredPanel, MLayeredPanel
from .layout_widget import LayoutWidget
@provides(ILayeredPanel)
class LayeredPanel(MLayeredPanel, LayoutWidget):
""" A Layered panel.
A layered panel contains one or more named layers, with only one layer
visible at any one time (think of a 'tab' control minus the tabs!). Each
layer is a toolkit-specific control.
"""
# The minimum sizes of the panel. Ignored in Qt.
min_width = Int(0)
min_height = Int(0)
# ------------------------------------------------------------------------
# 'ILayeredPanel' interface.
# ------------------------------------------------------------------------
def add_layer(self, name, layer):
""" Adds a layer with the specified name.
All layers are hidden when they are added. Use 'show_layer' to make a
layer visible.
"""
self.control.addWidget(layer)
self._layers[name] = layer
return layer
def show_layer(self, name):
""" Shows the layer with the specified name. """
layer = self._layers[name]
layer_index = self.control.indexOf(layer)
self.control.setCurrentIndex(layer_index)
self.current_layer = layer
self.current_layer_name = name
return layer
# ------------------------------------------------------------------------
# "IWidget" interface.
# ------------------------------------------------------------------------
def _create_control(self, parent):
""" Create the toolkit-specific control that represents the widget. """
control = QStackedWidget(parent)
return control
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