Current File : //usr/lib/python3/dist-packages/orca/scripts/toolkits/WebKitGtk/script_utilities.py
# Orca
#
# Copyright (C) 2010 Joanmarie Diggs
# Copyright (C) 2011-2012 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.
__id__ = "$Id$"
__version__ = "$Revision$"
__date__ = "$Date$"
__copyright__ = "Copyright (c) 2010 Joanmarie Diggs." \
"Copyright (c) 2011-2012 Igalia, S.L."
__license__ = "LGPL"
import gi
gi.require_version("Atspi", "2.0")
from gi.repository import Atspi
import re
import orca.focus_manager as focus_manager
import orca.keybindings as keybindings
import orca.script_utilities as script_utilities
from orca.ax_component import AXComponent
from orca.ax_hypertext import AXHypertext
from orca.ax_object import AXObject
from orca.ax_text import AXText
from orca.ax_utilities import AXUtilities
#############################################################################
# #
# Utilities #
# #
#############################################################################
class Utilities(script_utilities.Utilities):
def __init__(self, script):
"""Creates an instance of the Utilities class.
Arguments:
- script: the script with which this instance is associated.
"""
super().__init__(script)
def isWebKitGtk(self, obj):
"""Returns True if this object is a WebKitGtk object."""
if not obj:
return False
attrs = AXObject.get_attributes_dict(obj)
return attrs.get('toolkit', '') in ['WebKitGtk', 'WebKitGTK']
def getCaretContext(self):
# TODO - JD: This is private, but it's only here temporarily until we
# have the shared web content support.
obj, offset = self._script._lastCaretContext
if not obj and self.isWebKitGtk(focus_manager.getManager().get_locus_of_focus()):
obj, offset = super().getCaretContext()
return obj, offset
def setCaretContext(self, obj, offset):
# TODO - JD: This is private, but it's only here temporarily until we
# have the shared web content support.
self._script._lastCaretContext = obj, offset
focus_manager.getManager().set_locus_of_focus(None, obj, notify_script=False)
def setCaretPosition(self, obj, offset):
self.setCaretContext(obj, offset)
self.setCaretOffset(obj, offset)
def isReadOnlyTextArea(self, obj):
"""Returns True if obj is a text entry area that is read only."""
if not AXUtilities.is_entry(obj):
return False
if AXUtilities.is_read_only(obj):
return True
return AXUtilities.is_focusable(obj) and not AXUtilities.is_editable(obj)
def displayedText(self, obj):
"""Returns the text being displayed for an object.
Arguments:
- obj: the object
Returns the text being displayed for an object or None if there isn't
any text being shown.
"""
text = script_utilities.Utilities.displayedText(self, obj)
if text and text != self.EMBEDDED_OBJECT_CHARACTER:
return text
if AXUtilities.is_link(obj) or AXUtilities.is_list_item(obj):
children = [x for x in AXObject.iter_children(obj)]
text = ' '.join(map(self.displayedText, children))
if not text:
text = AXHypertext.get_link_basename(obj, remove_extension=True)
return text
def getLineContentsAtOffset(self, obj, offset, layoutMode=True, useCache=True):
return self.getObjectsFromEOCs(
obj, offset, Atspi.TextBoundaryType.LINE_START)
def getObjectContentsAtOffset(self, obj, offset=0, useCache=True):
return self.getObjectsFromEOCs(obj, offset)
def getObjectsFromEOCs(self, obj, offset=None, boundary=None):
"""Breaks the string containing a mixture of text and embedded object
characters into a list of (obj, startOffset, endOffset, string) tuples.
Arguments
- obj: the object whose EOCs we need to expand into tuples
- offset: the character offset. If None, use the current offset.
- boundary: the text boundary type. If None, get all text.
Returns a list of (obj, startOffset, endOffset, string) tuples.
"""
if not (AXObject.supports_text(obj) and AXObject.supports_hypertext(obj)):
return [(obj, 0, 1, '')]
string = AXText.get_all_text(obj)
if not string:
return [(obj, 0, 1, '')]
if offset is None:
offset = AXText.get_caret_offset(obj)
if boundary == Atspi.TextBoundaryType.CHAR:
key, mods = self.lastKeyAndModifiers()
if (mods & keybindings.SHIFT_MODIFIER_MASK) and key == 'Right':
offset -= 1
start, end = AXText.get_character_at_offset(obj, offset)[1:]
elif boundary in (None, Atspi.TextBoundaryType.LINE_START):
start, end = AXText.get_line_at_offset(obj, offset)[1:]
elif boundary == Atspi.TextBoundaryType.SENTENCE_START:
start, end = AXText.get_sentence_at_offset(obj, offset)[1:]
elif boundary == Atspi.TextBoundaryType.WORD_START:
start, end = AXText.get_word_at_offset(obj, offset)[1:]
else:
start, end = string, 0, AXText.get_character_count(obj)
pattern = re.compile(self.EMBEDDED_OBJECT_CHARACTER)
offsets = [m.start(0) for m in re.finditer(pattern, string)]
offsets = [x for x in offsets if start <= x < end]
objects = []
objs = []
for offset in offsets:
child = AXHypertext.get_child_at_offset(obj, offset)
if child:
objs.append(child)
def _get_range(obj):
return AXHypertext.get_link_start_offset(obj), AXHypertext.get_link_end_offset(obj)
ranges = [_get_range(x) for x in objs]
for i, (first, last) in enumerate(ranges):
objects.append((obj, start, first, string[start:first]))
objects.append((objs[i], first, last, ''))
start = last
objects.append((obj, start, end, string[start:end]))
objects = [x for x in objects if x[1] < x[2]]
return objects
def findPreviousObject(self, obj):
"""Finds the object before this one."""
if obj is None:
return None
if AXUtilities.is_link(obj):
obj = AXObject.get_parent(obj)
prevObj = AXObject.get_previous_object(obj)
if AXUtilities.is_list(prevObj) and AXObject.get_child_count(prevObj):
child = AXObject.get_child(prevObj, -1)
if self.isTextListItem(child):
prevObj = child
return prevObj
def findNextObject(self, obj):
"""Finds the object after this one."""
if obj is None:
return None
if AXUtilities.is_link(obj):
obj = AXObject.get_parent(obj)
nextObj = AXObject.get_next_object(obj)
if AXUtilities.is_list(nextObj) and AXObject.get_child_count(nextObj):
child = AXObject.get_child(nextObj, 0)
if self.isTextListItem(child):
nextObj = child
return nextObj
def isTextListItem(self, obj):
"""Returns True if obj is an item in a non-selectable list."""
if not AXUtilities.is_list_item(obj):
return False
parent = AXObject.get_parent(obj)
if parent is None:
return False
return not AXUtilities.is_focusable(parent)
def isInlineContainer(self, obj):
"""Returns True if obj is an inline/non-wrapped container."""
if AXUtilities.is_section(obj):
if AXObject.get_child_count(obj) > 1:
return AXComponent.on_same_line(
AXObject.get_child(obj, 0), AXObject.get_child(obj, 1))
return False
if AXUtilities.is_list(obj):
if AXUtilities.is_focusable(obj):
return False
childCount = AXObject.get_child_count(obj)
if not childCount:
return AXObject.supports_text(obj)
if childCount == 1:
return False
return AXComponent.on_same_line(AXObject.get_child(obj, 0), AXObject.get_child(obj, 1))
return False
def isEmbeddedDocument(self, obj):
if not self.isWebKitGtk(obj):
return False
if not AXUtilities.is_document(obj):
return False
parent = AXObject.get_parent(obj)
if not (parent and self.isWebKitGtk(parent)):
return False
parent = AXObject.get_parent(parent)
if not (parent and not self.isWebKitGtk(parent)):
return False
return True
def setCaretAtStart(self, obj):
child, index = self.getFirstCaretPosition(obj)
if child is not None:
AXText.set_caret_offset(child, index)
return child, index
def treatAsBrowser(self, obj):
return self.isEmbeddedDocument(obj)
def inDocumentContent(self, obj=None):
obj = obj or focus_manager.getManager().get_locus_of_focus()
return self.isWebKitGtk(obj)
Mini Shell