def _processObjectEvent(self, event):
"""Handles all object events destined for scripts.
Arguments:
- e: an at-spi event.
"""
debug.printObjectEvent(debug.LEVEL_FINEST, event)
eType = event.type
if eType.startswith("object:children-changed:remove"):
try:
if event.source == self.registry.getDesktop(0):
_scriptManager.reclaimScripts()
if settings.debugMemoryUsage:
orca.cleanupGarbage()
if not event.source.childCount:
orca.shutdown()
return
except (LookupError, RuntimeError):
# If we got this error here, we'll get it again when we
# attempt to get the state, catch it, and clean up.
pass
except:
debug.printException(debug.LEVEL_WARNING)
return
# Clean up any flat review context so that Orca does not get
# confused (see bgo#609633)
#
if (
eType.startswith("window:deactivate")
and orca_state.activeScript
and orca_state.activeScript.flatReviewContext
and orca_state.activeScript.app == event.host_application
):
orca_state.activeScript.drawOutline(-1, 0, 0, 0)
orca_state.activeScript.flatReviewContext = None
try:
state = event.source.getState()
except (LookupError, RuntimeError):
debug.println(debug.LEVEL_WARNING, "Error while processing event: %s" % eType)
if eType.startswith("window:deactivate"):
orca.setLocusOfFocus(event, None)
orca_state.activeWindow = None
return
except:
debug.printException(debug.LEVEL_WARNING)
return
if state and state.contains(pyatspi.STATE_DEFUNCT):
debug.println(debug.LEVEL_FINEST, "IGNORING DEFUNCT OBJECT")
if eType.startswith("window:deactivate"):
orca.setLocusOfFocus(event, None)
orca_state.activeWindow = None
return
if state and state.contains(pyatspi.STATE_ICONIFIED):
debug.println(debug.LEVEL_FINEST, "IGNORING ICONIFIED OBJECT")
return
if not debug.eventDebugFilter or debug.eventDebugFilter.match(eType) and not eType.startswith("mouse:"):
debug.printDetails(debug.LEVEL_FINEST, " ", event.source)
script = self._getScriptForEvent(event)
debug.println(debug.LEVEL_FINEST, "Script for event: %s" % script.name)
setNewActiveScript, reason = self._isActivatableEvent(event, script)
if setNewActiveScript:
app = event.host_application or event.source.getApplication()
_scriptManager.setActiveScript(script, reason)
script.processObjectEvent(event)
def _processObjectEvent(self, event):
"""Handles all events destined for scripts.
Arguments:
- e: an at-spi event.
"""
debug.printObjectEvent(debug.LEVEL_FINEST, event)
# [[[TODO: WDW - HACK to prevent gnome-panel from killing
# itself. It seems to do so after it issues some tool tip
# events and Orca attempts to process them. We're not really
# doing anything with tool tips right now, so we just ignore
# them. Note that this is just a bandaid to the problem. We
# should do something better. Please refer to bug 368626
# http://bugzilla.gnome.org/show_bug.cgi?id=368626 to follow
# this problem.]]]
#
try:
if event.source.role == rolenames.ROLE_TOOL_TIP:
# Check that it's okay to present tool tips. Always present
# tooltips initiated by the user pressing Control-F1 on the
# keyboard.
#
if isinstance(orca_state.lastInputEvent, \
input_event.KeyboardEvent):
if not orca_state.lastNonModifierKeyEvent.event_string == "F1":
return
# Mouse move events don't update orca_state.lastInputEvent
# so it's possible the user accidentally nudged the
# mouse and generated another tooltip event. If the
# current time minus the last keyboard event time is
# greater than 0.2 seconds, than just ignore this tooltip
# event.
#
currentTime = time.time()
if (currentTime - orca_state.lastInputEvent.time) > 0.2:
return
elif not settings.presentToolTips:
return
except:
pass
# Reclaim (delete) any scripts when desktop children go away.
# The idea here is that a desktop child is an app. We also
# generally do not like object:children-changed:remove events,
# either.
#
if event.type.startswith("object:children-changed:remove"):
if event.source == atspi.Accessible.makeAccessible(
self.registry.desktop):
self._reclaimScripts()
self._cleanupCache()
if settings.debugMemoryUsage:
self._cleanupGarbage()
return
try:
# We don't want to touch a defunct object. It's useless and it
# can cause hangs.
#
if event.source \
and event.source.state.count(atspi.Accessibility.STATE_DEFUNCT):
debug.println(debug.LEVEL_FINEST,
"IGNORING DEFUNCT OBJECT")
atspi.Accessible.deleteAccessible(event.source)
return
if (not debug.eventDebugFilter) \
or (debug.eventDebugFilter \
and debug.eventDebugFilter.match(event.type)):
if not event.type.startswith("mouse:"):
debug.printDetails(debug.LEVEL_FINEST, " ", event.source)
except CORBA.COMM_FAILURE:
debug.printException(debug.LEVEL_WARNING)
debug.println(debug.LEVEL_FINEST,
"COMM_FAILURE above while processing event: " \
+ event.type)
except CORBA.OBJECT_NOT_EXIST:
debug.printException(debug.LEVEL_WARNING)
debug.println(debug.LEVEL_WARNING,
"OBJECT_NOT_EXIST above while processing event: " \
+ event.type)
atspi.Accessible.deleteAccessible(event.source)
return
except:
debug.printException(debug.LEVEL_WARNING)
return
if not event.source:
debug.println(debug.LEVEL_WARNING,
"ERROR: received an event with no source.")
return
# We can sometimes get COMM_FAILURES even if the object has not
# gone away. This happens a lot with the Java access bridge.
# So...we will try a few times before giving up.
#
# [[[TODO: WDW - might want to consider re-introducing the reload
# feature of scripts somewhere around here. I pulled it out as
# part of the big refactor to make scripts object-oriented. Logged
# as bugzilla bug 319777.]]]
#
retryCount = 0
oldLocusOfFocus = orca_state.locusOfFocus
try:
# If we've received a mouse event, then don't try to get
# event.source.app because the top most parent is of role
# unknown, which will cause an ERROR message to be displayed.
# See Orca bug #409731 for more details.
#
if not event.type.startswith("mouse:"):
s = self._getScript(event.source.app)
else:
s = orca_state.activeScript
if not s:
return
except:
s = None
debug.printException(debug.LEVEL_WARNING)
debug.println(debug.LEVEL_WARNING,
"ERROR: received an event, but Script is None")
while s and retryCount <= s.commFailureAttemptLimit:
try:
if not event.source.state.count( \
atspi.Accessibility.STATE_ICONIFIED):
# [[[TODO: WDW - HACK we look for frame that get
# focus: as a means to detect active scripts
# because yelp does this. Actually, yelp is a bit
# odd in that it calls itself 'yelp' then changes
# its application name and id to the Gecko toolkit
# in use, and then issues a focus: event on the
# main window, which is a frame.]]]
#
if event.type.startswith("window:activate") \
or (event.type.startswith("focus:") \
and (event.source.role == rolenames.ROLE_FRAME)):
# We'll let someone else decide if it's important
# to stop speech or not.
#speech.stop()
debug.println(debug.LEVEL_FINE, "ACTIVE SCRIPT: " \
+ orca_state.activeScript.name)
self.setActiveScript(self._getScript(event.source.app))
# Load in the application specific settings for the
# app for this event (if found).
#
appSettings = self.loadAppSettings( \
orca_state.activeScript)
# Tell BrlTTY which commands we care about.
#
braille.setupKeyRanges(\
orca_state.activeScript.brailleBindings.keys())
s.processObjectEvent(event)
if retryCount:
debug.println(debug.LEVEL_WARNING,
" SUCCEEDED AFTER %d TRIES" % retryCount)
break
except CORBA.COMM_FAILURE:
debug.printException(debug.LEVEL_WARNING)
debug.println(debug.LEVEL_WARNING,
"COMM_FAILURE above while processing: " \
+ event.type)
retryCount += 1
if retryCount <= s.commFailureAttemptLimit:
# We want the old locus of focus to be reset so
# the proper stuff will be spoken if the locus
# of focus changed during our last attempt at
# handling this event.
#
orca_state.locusOfFocus = oldLocusOfFocus
debug.println(debug.LEVEL_WARNING,
" TRYING AGAIN (%d)" % retryCount)
time.sleep(s.commFailureWaitTime)
else:
debug.println(debug.LEVEL_WARNING,
" GIVING UP AFTER %d TRIES" \
% (retryCount - 1))
atspi.Accessible.deleteAccessible(event.source)
except:
debug.printException(debug.LEVEL_WARNING)
break
def _processObjectEvent(self, event):
"""Handles all events destined for scripts.
Arguments:
- e: an at-spi event.
"""
debug.printObjectEvent(debug.LEVEL_FINEST, event)
# [[[TODO: WDW - HACK to prevent gnome-panel from killing
# itself. It seems to do so after it issues some tool tip
# events and Orca attempts to process them. We're not really
# doing anything with tool tips right now, so we just ignore
# them. Note that this is just a bandaid to the problem. We
# should do something better. Please refer to bug 368626
# http://bugzilla.gnome.org/show_bug.cgi?id=368626 to follow
# this problem.]]]
#
try:
if event.source.role == rolenames.ROLE_TOOL_TIP:
# Check that it's okay to present tool tips. Always present
# tooltips initiated by the user pressing Control-F1 on the
# keyboard.
#
if isinstance(orca_state.lastInputEvent, \
input_event.KeyboardEvent):
if not orca_state.lastNonModifierKeyEvent.event_string == "F1":
return
# Mouse move events don't update orca_state.lastInputEvent
# so it's possible the user accidentally nudged the
# mouse and generated another tooltip event. If the
# current time minus the last keyboard event time is
# greater than 0.2 seconds, than just ignore this tooltip
# event.
#
currentTime = time.time()
if (currentTime - orca_state.lastInputEvent.time) > 0.2:
return
elif not settings.presentToolTips:
return
except:
pass
# Reclaim (delete) any scripts when desktop children go away.
# The idea here is that a desktop child is an app. We also
# generally do not like object:children-changed:remove events,
# either.
#
if event.type.startswith("object:children-changed:remove"):
if event.source == atspi.Accessible.makeAccessible(
self.registry.desktop):
self._reclaimScripts()
self._cleanupCache()
if settings.debugMemoryUsage:
self._cleanupGarbage()
return
try:
# We don't want to touch a defunct object. It's useless and it
# can cause hangs.
#
if event.source \
and event.source.state.count(atspi.Accessibility.STATE_DEFUNCT):
debug.println(debug.LEVEL_FINEST, "IGNORING DEFUNCT OBJECT")
atspi.Accessible.deleteAccessible(event.source)
return
if (not debug.eventDebugFilter) \
or (debug.eventDebugFilter \
and debug.eventDebugFilter.match(event.type)):
if not event.type.startswith("mouse:"):
debug.printDetails(debug.LEVEL_FINEST, " ",
event.source)
except CORBA.COMM_FAILURE:
debug.printException(debug.LEVEL_WARNING)
debug.println(debug.LEVEL_FINEST,
"COMM_FAILURE above while processing event: " \
+ event.type)
except CORBA.OBJECT_NOT_EXIST:
debug.printException(debug.LEVEL_WARNING)
debug.println(debug.LEVEL_WARNING,
"OBJECT_NOT_EXIST above while processing event: " \
+ event.type)
atspi.Accessible.deleteAccessible(event.source)
return
except:
debug.printException(debug.LEVEL_WARNING)
return
if not event.source:
debug.println(debug.LEVEL_WARNING,
"ERROR: received an event with no source.")
return
# We can sometimes get COMM_FAILURES even if the object has not
# gone away. This happens a lot with the Java access bridge.
# So...we will try a few times before giving up.
#
# [[[TODO: WDW - might want to consider re-introducing the reload
# feature of scripts somewhere around here. I pulled it out as
# part of the big refactor to make scripts object-oriented. Logged
# as bugzilla bug 319777.]]]
#
retryCount = 0
oldLocusOfFocus = orca_state.locusOfFocus
try:
# If we've received a mouse event, then don't try to get
# event.source.app because the top most parent is of role
# unknown, which will cause an ERROR message to be displayed.
# See Orca bug #409731 for more details.
#
if not event.type.startswith("mouse:"):
s = self._getScript(event.source.app)
else:
s = orca_state.activeScript
if not s:
return
except:
s = None
debug.printException(debug.LEVEL_WARNING)
debug.println(debug.LEVEL_WARNING,
"ERROR: received an event, but Script is None")
while s and retryCount <= s.commFailureAttemptLimit:
try:
if not event.source.state.count( \
atspi.Accessibility.STATE_ICONIFIED):
# [[[TODO: WDW - HACK we look for frame that get
# focus: as a means to detect active scripts
# because yelp does this. Actually, yelp is a bit
# odd in that it calls itself 'yelp' then changes
# its application name and id to the Gecko toolkit
# in use, and then issues a focus: event on the
# main window, which is a frame.]]]
#
if event.type.startswith("window:activate") \
or (event.type.startswith("focus:") \
and (event.source.role == rolenames.ROLE_FRAME)):
# We'll let someone else decide if it's important
# to stop speech or not.
#speech.stop()
debug.println(debug.LEVEL_FINE, "ACTIVE SCRIPT: " \
+ orca_state.activeScript.name)
self.setActiveScript(self._getScript(event.source.app))
# Load in the application specific settings for the
# app for this event (if found).
#
appSettings = self.loadAppSettings( \
orca_state.activeScript)
# Tell BrlTTY which commands we care about.
#
braille.setupKeyRanges(\
orca_state.activeScript.brailleBindings.keys())
s.processObjectEvent(event)
if retryCount:
debug.println(
debug.LEVEL_WARNING,
" SUCCEEDED AFTER %d TRIES" % retryCount)
break
except CORBA.COMM_FAILURE:
debug.printException(debug.LEVEL_WARNING)
debug.println(debug.LEVEL_WARNING,
"COMM_FAILURE above while processing: " \
+ event.type)
retryCount += 1
if retryCount <= s.commFailureAttemptLimit:
# We want the old locus of focus to be reset so
# the proper stuff will be spoken if the locus
# of focus changed during our last attempt at
# handling this event.
#
orca_state.locusOfFocus = oldLocusOfFocus
debug.println(debug.LEVEL_WARNING,
" TRYING AGAIN (%d)" % retryCount)
time.sleep(s.commFailureWaitTime)
else:
debug.println(debug.LEVEL_WARNING,
" GIVING UP AFTER %d TRIES" \
% (retryCount - 1))
atspi.Accessible.deleteAccessible(event.source)
except:
debug.printException(debug.LEVEL_WARNING)
break