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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!
""" An action that sets the active perspective. """
from pyface.workbench.api import IPerspective
from traits.api import Delegate, Instance, observe
from .workbench_action import WorkbenchAction
class SetActivePerspectiveAction(WorkbenchAction):
""" An action that sets the active perspective. """
# 'Action' interface ---------------------------------------------------
# Is the action enabled?
enabled = Delegate("perspective")
# The action's unique identifier (may be None).
id = Delegate("perspective")
# The action's name (displayed on menus/tool bar tools etc).
name = Delegate("perspective")
# The action's style.
style = "radio"
# 'SetActivePerspectiveAction' interface -------------------------------
# The perspective that we set the active perspective to.
perspective = Instance(IPerspective)
# ------------------------------------------------------------------------
# 'Action' interface.
# ------------------------------------------------------------------------
def destroy(self):
""" Destroy the action. """
self.window = None
def perform(self, event):
""" Perform the action. """
self.window.active_perspective = self.perspective
return
# ------------------------------------------------------------------------
# Private interface.
# ------------------------------------------------------------------------
@observe("perspective,window.active_perspective")
def _refresh_checked(self, event):
""" Refresh the checked state of the action. """
self.checked = (
self.perspective is not None
and self.window is not None
and self.window.active_perspective is not None
and self.perspective.id is self.window.active_perspective.id
)
return
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