Current File : //usr/lib/python3/dist-packages/orca/ax_utilities.py
# Utilities for performing tasks related to accessibility inspection.
#
# Copyright 2023 Igalia, S.L.
# Author: Joanmarie Diggs <jdiggs@igalia.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., Franklin Street, Fifth Floor,
# Boston MA 02110-1301 USA.
"""
Utilities for performing tasks related to accessibility inspection.
These utilities are app-type- and toolkit-agnostic. Utilities that might have
different implementations or results depending on the type of app (e.g. terminal,
chat, web) or toolkit (e.g. Qt, Gtk) should be in script_utilities.py file(s).
N.B. There are currently utilities that should never have custom implementations
that live in script_utilities.py files. These will be moved over time.
"""
__id__ = "$Id$"
__version__ = "$Revision$"
__date__ = "$Date$"
__copyright__ = "Copyright (c) 2023 Igalia, S.L."
__license__ = "LGPL"
import inspect
import gi
gi.require_version("Atspi", "2.0")
from gi.repository import Atspi
from . import debug
from .ax_object import AXObject
from .ax_utilities_collection import AXUtilitiesCollection
from .ax_utilities_role import AXUtilitiesRole
from .ax_utilities_state import AXUtilitiesState
class AXUtilities:
"""Utilities for performing tasks related to accessibility inspection."""
COMPARE_COLLECTION_PERFORMANCE = False
@staticmethod
def get_desktop():
"""Returns the accessible desktop"""
try:
desktop = Atspi.get_desktop(0)
except Exception as error:
tokens = ["ERROR: Exception getting desktop from Atspi:", error]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return None
return desktop
@staticmethod
def get_all_applications(must_have_window=False):
"""Returns a list of running applications known to Atspi, filtering out
those which have no child windows if must_have_window is True."""
desktop = AXUtilities.get_desktop()
if desktop is None:
return []
def pred(obj):
if must_have_window:
return AXObject.get_child_count(obj) > 0
return True
return list(AXObject.iter_children(desktop, pred))
@staticmethod
def is_application_in_desktop(app):
"""Returns true if app is known to Atspi"""
desktop = AXUtilities.get_desktop()
if desktop is None:
return False
for child in AXObject.iter_children(desktop):
if child == app:
return True
tokens = ["WARNING:", app, "is not in", desktop]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return False
@staticmethod
def get_application_with_pid(pid):
"""Returns the accessible application with the specified pid"""
desktop = AXUtilities.get_desktop()
if desktop is None:
return None
for app in AXObject.iter_children(desktop):
if AXObject.get_process_id(app) == pid:
return app
tokens = ["WARNING: app with pid", pid, "is not in", desktop]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return None
@staticmethod
def get_all_static_text_leaf_nodes(obj):
"""Returns all the descendants of obj that are static text leaf nodes"""
roles = [Atspi.Role.STATIC, Atspi.Role.TEXT]
def is_not_element(acc):
return AXObject.get_attribute(acc, "tag") in (None, "", "br")
result = None
if AXObject.supports_collection(obj):
result = AXUtilitiesCollection.find_all_with_role(obj, roles, is_not_element)
if not AXUtilities.COMPARE_COLLECTION_PERFORMANCE:
return result
def is_match(acc):
return AXObject.get_role(acc) in roles and is_not_element(acc)
return AXObject.find_all_descendants(obj, is_match)
@staticmethod
def get_all_widgets(obj, must_be_showing_and_visible=True, exclude_push_button=False):
"""Returns all the descendants of obj with a widget role"""
roles = AXUtilitiesRole.get_widget_roles()
if exclude_push_button and Atspi.Role.PUSH_BUTTON in roles:
roles.remove(Atspi.Role.PUSH_BUTTON)
result = None
if AXObject.supports_collection(obj):
if not must_be_showing_and_visible:
result = AXUtilitiesCollection.find_all_with_role(obj, roles)
else:
states = [Atspi.StateType.SHOWING, Atspi.StateType.VISIBLE]
result = AXUtilitiesCollection.find_all_with_role_and_all_states(
obj, roles, states)
if not AXUtilities.COMPARE_COLLECTION_PERFORMANCE:
return result
def is_match(acc):
if AXObject.get_role(acc) not in roles:
return False
if must_be_showing_and_visible:
return AXUtilitiesState.is_showing(acc) and AXUtilitiesState.is_visible(acc)
return True
return AXObject.find_all_descendants(obj, is_match)
@staticmethod
def get_default_button(obj):
"""Returns the default button descendant of obj"""
result = None
if AXObject.supports_collection(obj):
result = AXUtilitiesCollection.find_default_button(obj)
if not AXUtilities.COMPARE_COLLECTION_PERFORMANCE:
return result
return AXObject.find_descendant(obj, AXUtilitiesRole.is_default_button)
@staticmethod
def get_focused_object(obj):
"""Returns the focused descendant of obj"""
result = None
if AXObject.supports_collection(obj):
result = AXUtilitiesCollection.find_focused_object(obj)
if not AXUtilities.COMPARE_COLLECTION_PERFORMANCE:
return result
return AXObject.find_descendant(obj, AXUtilitiesState.is_focused)
@staticmethod
def get_status_bar(obj):
"""Returns the status bar descendant of obj"""
result = None
if AXObject.supports_collection(obj):
result = AXUtilitiesCollection.find_status_bar(obj)
if not AXUtilities.COMPARE_COLLECTION_PERFORMANCE:
return result
return AXObject.find_descendant(obj, AXUtilitiesRole.is_status_bar)
@staticmethod
def is_message_dialog(obj):
"""Returns True if obj is a dialog that should be treated as a message dialog"""
if not AXUtilitiesRole.is_dialog_or_alert(obj):
return False
if not AXObject.supports_collection(obj):
widgets = AXUtilities.get_all_widgets(obj, exclude_push_button=True)
return not widgets
if AXUtilitiesCollection.has_scroll_pane(obj):
tokens = ["AXUtilities:", obj, "is not a message dialog: has scroll pane"]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return False
if AXUtilitiesCollection.has_split_pane(obj):
tokens = ["AXUtilities:", obj, "is not a message dialog: has split pane"]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return False
if AXUtilitiesCollection.has_tree_or_tree_table(obj):
tokens = ["AXUtilities:", obj, "is not a message dialog: has tree or tree table"]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return False
if AXUtilitiesCollection.has_combo_box_or_list_box(obj):
tokens = ["AXUtilities:", obj, "is not a message dialog: has combo box or list box"]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return False
if AXUtilitiesCollection.has_editable_object(obj):
tokens = ["AXUtilities:", obj, "is not a message dialog: has editable object"]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return False
tokens = ["AXUtilities:", obj, "is believed to be a message dialog"]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return True
for name, method in inspect.getmembers(AXUtilitiesRole, predicate=inspect.isfunction):
setattr(AXUtilities, name, method)
for name, method in inspect.getmembers(AXUtilitiesState, predicate=inspect.isfunction):
setattr(AXUtilities, name, method)
for name, method in inspect.getmembers(AXUtilitiesCollection, predicate=inspect.isfunction):
if name.startswith("find"):
setattr(AXUtilities, name, method)
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