Current File : //lib/python3/dist-packages/orca/scripts/toolkits/WebKitGtk/script.py
# Orca
#
# Copyright (C) 2010-2011 The Orca Team
# 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) 2010-2011 The Orca Team" \
"Copyright (C) 2011-2012 Igalia, S.L."
__license__ = "LGPL"
import gi
gi.require_version("Atspi", "2.0")
from gi.repository import Atspi
import orca.scripts.default as default
import orca.cmdnames as cmdnames
import orca.debug as debug
import orca.focus_manager as focus_manager
import orca.guilabels as guilabels
import orca.input_event as input_event
import orca.messages as messages
import orca.settings as settings
import orca.settings_manager as settings_manager
import orca.speech as speech
import orca.structural_navigation as structural_navigation
from orca.ax_component import AXComponent
from orca.ax_object import AXObject
from orca.ax_utilities import AXUtilities
from .braille_generator import BrailleGenerator
from .speech_generator import SpeechGenerator
from .script_utilities import Utilities
########################################################################
# #
# The WebKitGtk script class. #
# #
########################################################################
class Script(default.Script):
def __init__(self, app):
"""Creates a new script for WebKitGtk applications.
Arguments:
- app: the application to create a script for.
"""
super().__init__(app)
self._loadingDocumentContent = False
self._lastCaretContext = None, -1
self.sayAllOnLoadCheckButton = None
if settings_manager.getManager().getSetting('sayAllOnLoad') is None:
settings_manager.getManager().setSetting('sayAllOnLoad', True)
def setupInputEventHandlers(self):
"""Defines InputEventHandler fields for this script that can be
called by the key and braille bindings."""
default.Script.setupInputEventHandlers(self)
self.inputEventHandlers.update(self.structuralNavigation.get_handlers(True))
self.inputEventHandlers["sayAllHandler"] = \
input_event.InputEventHandler(
Script.sayAll,
cmdnames.SAY_ALL)
self.inputEventHandlers["panBrailleLeftHandler"] = \
input_event.InputEventHandler(
Script.panBrailleLeft,
cmdnames.PAN_BRAILLE_LEFT,
False) # Do not enable learn mode for this action
self.inputEventHandlers["panBrailleRightHandler"] = \
input_event.InputEventHandler(
Script.panBrailleRight,
cmdnames.PAN_BRAILLE_RIGHT,
False) # Do not enable learn mode for this action
def getToolkitKeyBindings(self):
"""Returns the toolkit-specific keybindings for this script."""
layout = settings_manager.getManager().getSetting('keyboardLayout')
isDesktop = layout == settings.GENERAL_KEYBOARD_LAYOUT_DESKTOP
return self.structuralNavigation.get_bindings(refresh=True, is_desktop=isDesktop)
def getAppPreferencesGUI(self):
"""Return a GtkGrid containing the application unique configuration
GUI items for the current application."""
from gi.repository import Gtk
grid = Gtk.Grid()
grid.set_border_width(12)
label = guilabels.READ_PAGE_UPON_LOAD
self.sayAllOnLoadCheckButton = \
Gtk.CheckButton.new_with_mnemonic(label)
self.sayAllOnLoadCheckButton.set_active(
settings_manager.getManager().getSetting('sayAllOnLoad'))
grid.attach(self.sayAllOnLoadCheckButton, 0, 0, 1, 1)
grid.show_all()
return grid
def getPreferencesFromGUI(self):
"""Returns a dictionary with the app-specific preferences."""
return {'sayAllOnLoad': self.sayAllOnLoadCheckButton.get_active()}
def getBrailleGenerator(self):
"""Returns the braille generator for this script."""
return BrailleGenerator(self)
def getSpeechGenerator(self):
"""Returns the speech generator for this script."""
return SpeechGenerator(self)
def getEnabledStructuralNavigationTypes(self):
"""Returns a list of the structural navigation object types
enabled in this script."""
return [structural_navigation.StructuralNavigation.BLOCKQUOTE,
structural_navigation.StructuralNavigation.BUTTON,
structural_navigation.StructuralNavigation.CHECK_BOX,
structural_navigation.StructuralNavigation.CHUNK,
structural_navigation.StructuralNavigation.CLICKABLE,
structural_navigation.StructuralNavigation.COMBO_BOX,
structural_navigation.StructuralNavigation.CONTAINER,
structural_navigation.StructuralNavigation.ENTRY,
structural_navigation.StructuralNavigation.FORM_FIELD,
structural_navigation.StructuralNavigation.HEADING,
structural_navigation.StructuralNavigation.IFRAME,
structural_navigation.StructuralNavigation.IMAGE,
structural_navigation.StructuralNavigation.LANDMARK,
structural_navigation.StructuralNavigation.LINK,
structural_navigation.StructuralNavigation.LIST,
structural_navigation.StructuralNavigation.LIST_ITEM,
structural_navigation.StructuralNavigation.LIVE_REGION,
structural_navigation.StructuralNavigation.PARAGRAPH,
structural_navigation.StructuralNavigation.RADIO_BUTTON,
structural_navigation.StructuralNavigation.SEPARATOR,
structural_navigation.StructuralNavigation.TABLE,
structural_navigation.StructuralNavigation.UNVISITED_LINK,
structural_navigation.StructuralNavigation.VISITED_LINK]
def getUtilities(self):
"""Returns the utilities for this script."""
return Utilities(self)
def onCaretMoved(self, event):
"""Callback for object:text-caret-moved accessibility events."""
if self._inSayAll:
return
if not self.utilities.isWebKitGtk(event.source):
super().onCaretMoved(event)
return
lastKey, mods = self.utilities.lastKeyAndModifiers()
if lastKey in ['Tab', 'ISO_Left_Tab']:
return
focus = focus_manager.getManager().get_locus_of_focus()
if lastKey == 'Down' \
and AXObject.get_index_in_parent(event.source) == 0 \
and focus == AXObject.get_parent(event.source) \
and AXUtilities.is_link(focus):
self.updateBraille(event.source)
return
self.utilities.setCaretContext(event.source, event.detail1)
super().onCaretMoved(event)
def onDocumentReload(self, event):
"""Callback for document:reload accessibility events."""
if self.utilities.treatAsBrowser(event.source):
self._loadingDocumentContent = True
def onDocumentLoadComplete(self, event):
"""Callback for document:load-complete accessibility events."""
if not self.utilities.treatAsBrowser(event.source):
return
self._loadingDocumentContent = False
# TODO: We need to see what happens in Epiphany on pages where focus
# is grabbed rather than set the caret at the start. But for simple
# content in both Yelp and Epiphany this is alright for now.
obj, offset = self.utilities.setCaretAtStart(event.source)
self.utilities.setCaretContext(obj, offset)
self.updateBraille(obj)
if settings_manager.getManager().getSetting('sayAllOnLoad') \
and settings_manager.getManager().getSetting('enableSpeech'):
self.sayAll(None)
def onDocumentLoadStopped(self, event):
"""Callback for document:load-stopped accessibility events."""
if self.utilities.treatAsBrowser(event.source):
self._loadingDocumentContent = False
def onFocusedChanged(self, event):
"""Callback for object:state-changed:focused accessibility events."""
if self._inSayAll or not event.detail1:
return
if not self.utilities.isWebKitGtk(event.source):
super().onFocusedChanged(event)
return
contextObj, offset = self.utilities.getCaretContext()
if event.source == contextObj:
return
obj = event.source
role = AXObject.get_role(obj)
textRoles = [Atspi.Role.HEADING,
Atspi.Role.PANEL,
Atspi.Role.PARAGRAPH,
Atspi.Role.SECTION,
Atspi.Role.TABLE_CELL]
if role in textRoles \
or (role == Atspi.Role.LIST_ITEM and AXObject.get_child_count(obj)):
return
super().onFocusedChanged(event)
def onBusyChanged(self, event):
"""Callback for object:state-changed:busy accessibility events."""
if not self.utilities.treatAsBrowser(event.source):
return
if event.detail1:
self.presentMessage(messages.PAGE_LOADING_START)
return
name = AXObject.get_name(event.source)
if name:
self.presentMessage(messages.PAGE_LOADING_END_NAMED % name)
else:
self.presentMessage(messages.PAGE_LOADING_END)
def sayCharacter(self, obj):
"""Speak the character at the caret.
Arguments:
- obj: an Accessible object that implements the AccessibleText interface
"""
if AXUtilities.is_entry(obj):
default.Script.sayCharacter(self, obj)
return
boundary = Atspi.TextBoundaryType.CHAR
objects = self.utilities.getObjectsFromEOCs(obj, boundary=boundary)
for (obj, start, end, string) in objects:
if string:
self.speakCharacter(string)
else:
speech.speak(self.speechGenerator.generateSpeech(obj))
self.pointOfReference["lastTextUnitSpoken"] = "char"
def sayWord(self, obj):
"""Speaks the word at the caret.
Arguments:
- obj: an Accessible object that implements the AccessibleText interface
"""
if AXUtilities.is_entry(obj):
default.Script.sayWord(self, obj)
return
boundary = Atspi.TextBoundaryType.WORD_START
objects = self.utilities.getObjectsFromEOCs(obj, boundary=boundary)
for (obj, start, end, string) in objects:
self.sayPhrase(obj, start, end)
self.pointOfReference["lastTextUnitSpoken"] = "word"
def sayLine(self, obj):
"""Speaks the line at the caret.
Arguments:
- obj: an Accessible object that implements the AccessibleText interface
"""
if AXUtilities.is_entry(obj):
default.Script.sayLine(self, obj)
return
boundary = Atspi.TextBoundaryType.LINE_START
objects = self.utilities.getObjectsFromEOCs(obj, boundary=boundary)
for (obj, start, end, string) in objects:
self.sayPhrase(obj, start, end)
# TODO: Move these next items into the speech generator.
if AXUtilities.is_panel(obj) and AXObject.get_index_in_parent(obj) == 0:
obj = AXObject.get_parent(obj)
rolesToSpeak = [Atspi.Role.HEADING, Atspi.Role.LINK]
if AXObject.get_role(obj) in rolesToSpeak:
speech.speak(self.speechGenerator.getRoleName(obj))
self.pointOfReference["lastTextUnitSpoken"] = "line"
def sayPhrase(self, obj, startOffset, endOffset):
"""Speaks the text of an Accessible object between the given offsets.
Arguments:
- obj: an Accessible object that implements the AccessibleText interface
- startOffset: the start text offset.
- endOffset: the end text offset.
"""
if AXUtilities.is_entry(obj):
default.Script.sayPhrase(self, obj, startOffset, endOffset)
return
phrase = self.utilities.substring(obj, startOffset, endOffset)
if len(phrase) and phrase != "\n":
voice = self.speechGenerator.voice(obj=obj, string=phrase)
phrase = self.utilities.adjustForRepeats(phrase)
links = [x for x in AXObject.iter_children(obj, AXUtilities.is_link)]
if links:
phrase = self.utilities.adjustForLinks(obj, phrase, startOffset)
speech.speak(phrase, voice)
else:
# Speak blank line if appropriate.
#
self.sayCharacter(obj)
self.pointOfReference["lastTextUnitSpoken"] = "phrase"
def skipObjectEvent(self, event):
"""Gives us, and scripts, the ability to decide an event isn't
worth taking the time to process under the current circumstances.
Arguments:
- event: the Event
Returns True if we shouldn't bother processing this object event.
"""
if event.type.startswith('object:state-changed:focused') and event.detail1 \
and AXUtilities.is_link(event.source):
return False
return default.Script.skipObjectEvent(self, event)
def panBrailleLeft(self, inputEvent=None, panAmount=0):
"""In document content, we want to use the panning keys to browse the
entire document.
"""
focus = focus_manager.getManager().get_locus_of_focus()
if self.flatReviewPresenter.is_active() \
or not self.isBrailleBeginningShowing() \
or not self.utilities.isWebKitGtk(focus):
return default.Script.panBrailleLeft(self, inputEvent, panAmount)
obj = self.utilities.findPreviousObject(focus)
focus_manager.getManager().set_locus_of_focus(None, obj, notify_script=False)
self.updateBraille(obj)
# Hack: When panning to the left in a document, we want to start at
# the right/bottom of each new object. For now, we'll pan there.
# When time permits, we'll give our braille code some smarts.
while self.panBrailleInDirection(panToLeft=False):
pass
self.refreshBraille(False)
return True
def panBrailleRight(self, inputEvent=None, panAmount=0):
"""In document content, we want to use the panning keys to browse the
entire document.
"""
focus = focus_manager.getManager().get_locus_of_focus()
if self.flatReviewPresenter.is_active() \
or not self.isBrailleEndShowing() \
or not self.utilities.isWebKitGtk(focus):
return default.Script.panBrailleRight(self, inputEvent, panAmount)
obj = self.utilities.findNextObject(focus)
focus_manager.getManager().set_locus_of_focus(None, obj, notify_script=False)
self.updateBraille(obj)
# Hack: When panning to the right in a document, we want to start at
# the left/top of each new object. For now, we'll pan there. When time
# permits, we'll give our braille code some smarts.
while self.panBrailleInDirection(panToLeft=True):
pass
self.refreshBraille(False)
return True
def sayAll(self, inputEvent, obj=None, offset=None):
"""Speaks the contents of the document beginning with the present
location. Overridden in this script because the sayAll could have
been started on an object without text (such as an image).
"""
obj = obj or focus_manager.getManager().get_locus_of_focus()
if not self.utilities.isWebKitGtk(obj):
return default.Script.sayAll(self, inputEvent, obj, offset)
speech.sayAll(self.textLines(obj, offset), self.__sayAllProgressCallback)
return True
def updateBraille(self, obj, **args):
"""Updates the braille display to show the given object.
Arguments:
- obj: the Accessible
"""
if not settings_manager.getManager().getSetting('enableBraille') \
and not settings_manager.getManager().getSetting('enableBrailleMonitor'):
debug.printMessage(debug.LEVEL_INFO, "BRAILLE: update disabled", True)
return
if not obj:
return
if not self.utilities.isWebKitGtk(obj) \
or (not self.utilities.isInlineContainer(obj) \
and not self.utilities.isTextListItem(obj)):
default.Script.updateBraille(self, obj, **args)
return
brailleLine = self.getNewBrailleLine(clearBraille=True, addLine=True)
for child in AXObject.iter_children(obj):
if not AXComponent.on_same_line(child, AXObject.get_child(obj, 0)):
break
[regions, fRegion] = self.brailleGenerator.generateBraille(child)
self.addBrailleRegionsToLine(regions, brailleLine)
if not brailleLine.regions:
[regions, fRegion] = self.brailleGenerator.generateBraille(
obj, role=Atspi.Role.PARAGRAPH)
self.addBrailleRegionsToLine(regions, brailleLine)
self.setBrailleFocus(fRegion)
extraRegion = args.get('extraRegion')
if extraRegion:
self.addBrailleRegionToLine(extraRegion, brailleLine)
self.refreshBraille()
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