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# (C) Copyright 2007-2023 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!
# Enthought library imports.
from pyface.action.api import Action, ActionItem, Group
from traits.api import Any, Instance, List, on_trait_change, Property, Str
class TaskWindowToggleAction(Action):
"""An action for activating an application window."""
#### 'Action' interface ###################################################
name = Property(Str, observe="window.active_task.name")
style = "toggle"
#### 'TaskWindowToggleAction' interface ###################################
# The window to use for this action.
window = Instance("envisage.ui.tasks.task_window.TaskWindow")
###########################################################################
# 'Action' interface.
###########################################################################
def perform(self, event=None):
if self.window:
self.window.activate()
###########################################################################
# Private interface.
###########################################################################
def _get_name(self):
if self.window.active_task:
return self.window.active_task.name
return ""
@on_trait_change("window:activated")
def _window_activated(self):
self.checked = True
@on_trait_change("window:deactivated")
def _window_deactivated(self):
self.checked = False
class TaskWindowToggleGroup(Group):
"""
A Group for toggling the activation state of an application's windows.
"""
#### 'Group' interface ####################################################
id = "TaskWindowToggleGroup"
items = List
#### 'TaskWindowToggleGroup' interface ####################################
# The application that contains the group.
application = Instance(
"envisage.ui.tasks.tasks_application." "TasksApplication"
)
# The ActionManager to which the group belongs.
manager = Any
###########################################################################
# 'Group' interface.
###########################################################################
def destroy(self):
"""Called when the group is no longer required."""
super().destroy()
if self.application:
self.application.on_trait_change(
self._rebuild, "window_opened, window_closed", remove=True
)
###########################################################################
# Private interface.
###########################################################################
def _get_items(self):
items = []
for window in self.application.windows:
active = window == self.application.active_window
action = TaskWindowToggleAction(window=window, checked=active)
items.append(ActionItem(action=action))
return items
def _rebuild(self):
# Clear out the old group, then build the new one.
for item in self.items:
item.destroy()
self.items = self._get_items()
# Inform our manager that it needs to be rebuilt.
self.manager.changed = True
#### Trait initializers ###################################################
def _application_default(self):
return self.manager.controller.task.window.application
def _items_default(self):
self.application.on_trait_change(
self._rebuild, "window_opened, window_closed"
)
return self._get_items()
def _manager_default(self):
manager = self
while isinstance(manager, Group):
manager = manager.parent
return manager
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