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#------------------------------------------------------------------------------
# Copyright (c) 2019-2024, 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 Bool, ForwardTyped, Typed
from enaml.core.declarative import d_, observe
from .toolkit_object import ToolkitObject, ProxyToolkitObject
class ProxyButtonGroup(ProxyToolkitObject):
""" The abstract defintion of a proxy ButtonGroup object.
"""
#: A reference to the ButtonGroup declaration.
declaration = ForwardTyped(lambda: ButtonGroup)
def set_exclusive(self, exclusive):
raise NotImplementedError
def add_button(self, button):
raise NotImplementedError
def remove_button(self, button):
raise NotImplementedError
class ButtonGroup(ToolkitObject):
""" A way to declare a group of buttons.
This allows to group buttons even though they belong to different
container. Note that if a button belongs to a ButtonGroup the rules
about buttons sharing a container being in the same group do not apply.d2
"""
#: Set of members belonging to the group.
#: This value should be considered read-only for users.
group_members = Typed(set, ())
#: Can only a single button in the group be checked at a time.
exclusive = d_(Bool(True))
#: A reference to the ProxyButtonGroup object.
proxy = Typed(ProxyButtonGroup)
@observe("exclusive")
def _update_proxy(self, change):
super(ButtonGroup, self)._update_proxy(change)
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