Current File : //usr/lib/python3/dist-packages/orca/scripts/web/braille_generator.py
# Orca
#
# Copyright 2005-2009 Sun Microsystems Inc.
# Copyright 2010-2011 Orca Team
# Copyright 2011-2015 Igalia, S.L.
#
# 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.
__id__ = "$Id$"
__version__ = "$Revision$"
__date__ = "$Date$"
__copyright__ = "Copyright (c) 2005-2009 Sun Microsystems Inc." \
"Copyright (c) 2010-2011 Orca Team" \
"Copyright (c) 2011-2015 Igalia, S.L."
__license__ = "LGPL"
import gi
gi.require_version("Atspi", "2.0")
from gi.repository import Atspi
from orca import braille
from orca import braille_generator
from orca import debug
from orca import focus_manager
from orca import messages
from orca import object_properties
from orca.ax_object import AXObject
from orca.ax_table import AXTable
from orca.ax_utilities import AXUtilities
class BrailleGenerator(braille_generator.BrailleGenerator):
def __init__(self, script):
super().__init__(script)
def getLocalizedRoleName(self, obj, **args):
if not self._script.utilities.inDocumentContent(obj):
return super().getLocalizedRoleName(obj, **args)
roledescription = self._script.utilities.getRoleDescription(obj, True)
if roledescription:
return roledescription
return super().getLocalizedRoleName(obj, **args)
def _generateRoleName(self, obj, **args):
"""Prevents some roles from being displayed."""
if not self._script.utilities.inDocumentContent(obj):
return super()._generateRoleName(obj, **args)
roledescription = self._script.utilities.getRoleDescription(obj, True)
if roledescription:
return [roledescription]
doNotDisplay = [Atspi.Role.FORM,
Atspi.Role.PARAGRAPH,
Atspi.Role.STATIC,
Atspi.Role.SECTION,
Atspi.Role.REDUNDANT_OBJECT,
Atspi.Role.UNKNOWN]
if not AXUtilities.is_focusable(obj):
doNotDisplay.extend([Atspi.Role.LIST,
Atspi.Role.LIST_ITEM,
Atspi.Role.COLUMN_HEADER,
Atspi.Role.ROW_HEADER,
Atspi.Role.TABLE_CELL,
Atspi.Role.PANEL])
if args.get('startOffset') is not None and args.get('endOffset') is not None:
doNotDisplay.append(Atspi.Role.ALERT)
result = []
role = args.get('role', AXObject.get_role(obj))
if role == Atspi.Role.HEADING:
level = self._script.utilities.headingLevel(obj)
result.append(object_properties.ROLE_HEADING_LEVEL_BRAILLE % level)
elif self._script.utilities.isLink(obj) \
and obj == focus_manager.getManager().get_locus_of_focus():
if AXUtilities.is_image(AXObject.get_parent(obj)):
result.append(messages.IMAGE_MAP_LINK)
elif role not in doNotDisplay:
label = AXTable.get_label_for_cell_coordinates(obj)
if label:
result.append(label)
else:
result = super()._generateRoleName(obj, **args)
index = args.get('index', 0)
total = args.get('total', 1)
if index == total - 1 and role != Atspi.Role.HEADING \
and (role == Atspi.Role.IMAGE or self._script.utilities.treatAsTextObject(obj)):
heading = AXObject.find_ancestor(obj, AXUtilities.is_heading)
if heading is not None:
result.extend(self._generateRoleName(heading))
return result
def _generateLabelOrName(self, obj, **args):
if not self._script.utilities.inDocumentContent(obj):
return super()._generateLabelOrName(obj, **args)
if self._script.utilities.isTextBlockElement(obj):
return []
if AXUtilities.is_editable(obj) \
and self._script.utilities.isCodeDescendant(obj):
return []
return self._generateName(obj, **args)
def _generateLabel(self, obj, **args):
if not self._script.utilities.inDocumentContent(obj):
return super()._generateLabel(obj, **args)
label, objects = self._script.utilities.inferLabelFor(obj)
if label:
return [label]
return super()._generateLabel(obj, **args)
def _generateLabelAndName(self, obj, **args):
if not self._script.utilities.inDocumentContent(obj):
return super()._generateLabelAndName(obj, **args)
if self._script.utilities.isTextBlockElement(obj):
return []
role = args.get('role', AXObject.get_role(obj))
if role == Atspi.Role.LABEL and AXObject.supports_text(obj):
return []
return super()._generateLabelAndName(obj, **args)
def _generateDescription(self, obj, **args):
if not self._script.utilities.inDocumentContent(obj):
return super()._generateDescription(obj, **args)
if self._script.utilities.preferDescriptionOverName(obj):
return []
return super()._generateDescription(obj, **args)
def _generateName(self, obj, **args):
if not self._script.utilities.inDocumentContent(obj):
return super()._generateName(obj, **args)
brailleLabel = AXObject.get_attributes_dict(obj).get("braillelabel")
if brailleLabel:
return [brailleLabel]
if self._script.utilities.preferDescriptionOverName(obj):
return [AXObject.get_description(obj)]
if AXObject.get_name(obj) and not self._script.utilities.hasValidName(obj):
return []
result = super()._generateName(obj, **args)
if result and result[0] and not self._script.utilities.hasExplicitName(obj):
result[0] = result[0].strip()
elif not result and AXUtilities.is_check_box(obj):
gridCell = AXObject.find_ancestor(obj, self._script.utilities.isGridCell)
if gridCell:
return super()._generateName(gridCell, **args)
return result
def _generateExpandedEOCs(self, obj, **args):
"""Returns the expanded embedded object characters for an object."""
if not self._script.utilities.inDocumentContent(obj):
return super()._generateExpandedEOCs(obj, **args)
result = []
startOffset = args.get('startOffset', 0)
endOffset = args.get('endOffset', -1)
text = self._script.utilities.expandEOCs(obj, startOffset, endOffset)
if text:
result.append(text)
return result
def _generateRealActiveDescendantDisplayedText(self, obj, **args):
if not self._script.utilities.inDocumentContent(obj):
return super()._generateRealActiveDescendantDisplayedText(obj, **args)
rad = self._script.utilities.realActiveDescendant(obj)
return self._generateDisplayedText(rad, **args)
def _generateTableCellRow(self, obj, **args):
if not self._script.utilities.inDocumentContent(obj):
return super()._generateTableCellRow(obj, **args)
if not self._script.utilities.shouldReadFullRow(obj, args.get('priorObj')):
return self._generateRealTableCell(obj, **args)
row = AXObject.find_ancestor(obj, AXUtilities.is_table_row)
if row and AXObject.get_name(row) and not self._script.utilities.isLayoutOnly(row):
return self.generate(row, includeContext=False)
return super()._generateTableCellRow(obj, **args)
def generateBraille(self, obj, **args):
if not self._script.utilities.inDocumentContent(obj):
tokens = ["WEB:", obj, "is not in document content. Calling default braille generator."]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return super().generateBraille(obj, **args)
tokens = ["WEB: Generating braille for document object", obj]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
result = []
args['includeContext'] = not self._script.utilities.inDocumentContent(obj)
oldRole = None
if self._script.utilities.isClickableElement(obj) \
or self._script.utilities.isLink(obj):
oldRole = self._overrideRole(Atspi.Role.LINK, args)
elif self._script.utilities.isCustomImage(obj):
oldRole = self._overrideRole(Atspi.Role.IMAGE, args)
elif self._script.utilities.isAnchor(obj):
oldRole = self._overrideRole(Atspi.Role.STATIC, args)
elif self._script.utilities.treatAsDiv(obj, offset=args.get('startOffset')):
oldRole = self._overrideRole(Atspi.Role.SECTION, args)
elif self._script.utilities.treatAsEntry(obj):
oldRole = self._overrideRole(Atspi.Role.ENTRY, args)
if AXUtilities.is_menu_item(obj):
comboBox = AXObject.find_ancestor(obj, AXUtilities.is_combo_box)
if comboBox and not AXUtilities.is_expanded(comboBox):
obj = comboBox
result.extend(super().generateBraille(obj, **args))
del args['includeContext']
if oldRole:
self._restoreRole(oldRole, args)
return result
def generateContents(self, contents, **args):
if not len(contents):
return []
result = []
contents = self._script.utilities.filterContentsForPresentation(contents, True)
document = args.get("documentFrame")
obj, offset = self._script.utilities.getCaretContext(documentFrame=document)
index = self._script.utilities.findObjectInContents(obj, offset, contents)
lastRegion = None
focusedRegion = None
for i, content in enumerate(contents):
acc, start, end, string = content
regions, fRegion = self.generateBraille(
acc, startOffset=start, endOffset=end, string=string,
index=i, total=len(contents))
if not regions:
continue
if i == index:
focusedRegion = fRegion
if lastRegion and regions:
if lastRegion.string:
lastChar = lastRegion.string[-1]
else:
lastChar = ""
if regions[0].string:
nextChar = regions[0].string[0]
else:
nextChar = ""
if self._script.utilities.needsSeparator(lastChar, nextChar):
regions.insert(0, braille.Region(" "))
lastRegion = regions[-1]
result.append(regions)
return result, focusedRegion
Mini Shell