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""" The default perspective menu for a workbench window. """
# Enthought library imports.
from enthought.pyface.action.api import Group, MenuManager
from enthought.traits.api import Instance, List, on_trait_change
# Local imports.
from delete_user_perspective_action import DeleteUserPerspectiveAction
from new_user_perspective_action import NewUserPerspectiveAction
from rename_user_perspective_action import RenameUserPerspectiveAction
from reset_all_perspectives_action import ResetAllPerspectivesAction
from reset_active_perspective_action import ResetActivePerspectiveAction
from save_as_user_perspective_action import SaveAsUserPerspectiveAction
from set_active_perspective_action import SetActivePerspectiveAction
class PerspectiveMenuManager(MenuManager):
""" The default perspective menu for a workbench window. """
#### 'ActionManager' interface ############################################
# All of the groups in the manager.
groups = List(Group)
# The manager's unique identifier.
id = 'PerspectivesMenu'
#### 'MenuManager' interface ##############################################
# The menu manager's name.
name = 'Perspectives'
#### 'PerspectiveMenuManager' interface ###################################
# The workbench window that the manager is part of.
window = Instance('enthought.pyface.workbench.api.WorkbenchWindow')
###########################################################################
# 'ActionManager' interface.
###########################################################################
def _groups_default(self):
""" Trait initializer. """
groups = [
# Create a group containing the actions that switch to specific
# perspectives.
self._create_perspective_group(self.window),
# Create a group containing the user perspective create/save/rename
# /delete actions.
self._create_user_perspective_group(self.window),
# Create a group containing the reset actions.
self._create_reset_perspective_group(self.window)
]
return groups
###########################################################################
# 'PerspectiveMenuManager' interface.
###########################################################################
@on_trait_change('window.perspectives')
@on_trait_change('window.perspectives_items')
def rebuild(self):
""" Rebuild the menu.
This is called when user perspectives have been added or removed.
"""
# Clear out the old menu. This gives any actions that have trait
# listeners (i.e. the rename and delete actions!) a chance to unhook
# them.
self.destroy()
# Resetting the trait allows the initializer to run again (which will
# happen just as soon as we fire the 'changed' event).
self.reset_traits(['groups'])
# Let the associated menu know that we have changed.
self.changed = True
return
###########################################################################
# Private interface.
###########################################################################
def _create_perspective_group(self, window):
""" Create the actions that switch to specific perspectives. """
# fixme: Not sure if alphabetic sorting is appropriate in all cases,
# but it will do for now!
perspectives = window.perspectives[:]
perspectives.sort(lambda x, y: cmp(x.name, y.name))
# For each perspective, create an action that sets the active
# perspective to it.
group = Group()
for perspective in perspectives:
group.append(
SetActivePerspectiveAction(
perspective=perspective, window=window
)
)
return group
def _create_user_perspective_group(self, window):
""" Create the user perspective create/save/rename/delete actions. """
group = Group(
NewUserPerspectiveAction(window=window),
SaveAsUserPerspectiveAction(window=window),
RenameUserPerspectiveAction(window=window),
DeleteUserPerspectiveAction(window=window)
)
return group
def _create_reset_perspective_group(self, window):
""" Create the reset perspective actions. """
group = Group(
ResetActivePerspectiveAction(window=window),
ResetAllPerspectivesAction(window=window)
)
return group
#### EOF ######################################################################
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