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#------------------------------------------------------------------------------
# Copyright (c) 2013-2025, Nucleic Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
#------------------------------------------------------------------------------
from atom.api import Typed, ForwardTyped
from .container import Container
from .widget import Widget, ProxyWidget
class ProxyStackItem(ProxyWidget):
""" The abstract definition of a proxy StackItem object.
"""
#: A reference to the StackItem declaration.
declaration = ForwardTyped(lambda: StackItem)
class StackItem(Widget):
""" A widget which can be used as an item in a Stack.
A StackItem is a widget which can be used as a child of a Stack
widget. It can have at most a single child widget which is an
instance of Container.
"""
#: A reference to the ProxyStackItem object.
proxy = Typed(ProxyStackItem)
def stack_widget(self):
""" Get the stack widget defined for the item.
The stack widget is the last child Container.
"""
for child in reversed(self.children):
if isinstance(child, Container):
return child
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