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# Orca
#
# Copyright 2005 Sun Microsystems Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 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
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
"""Provides the PresentationManager class for Orca."""
__id__ = "$Id: presentation_manager.py,v 1.3 2006/06/10 00:54:47 wwalker Exp $"
__version__ = "$Revision: 1.3 $"
__date__ = "$Date: 2006/06/10 00:54:47 $"
__copyright__ = "Copyright (c) 2005-2006 Sun Microsystems Inc."
__license__ = "LGPL"
class PresentationManager:
"""High level manager for reacting to user input events and
presenting information to the user."""
def processKeyboardEvent(self, keyboardEvent):
"""Called when a key is pressed on the keyboard.
Arguments:
- keyboardEvent: an instance of input_event.KeyboardEvent
Returns True if the event should be consumed.
"""
return False
def processBrailleEvent(self, brailleEvent):
"""Called when keys or buttons are pressed on the Braille display.
Arguments:
- brailleEvent: an instance of input_event.BrailleEvent
Returns True if the command was consumed; otherwise False
"""
return False
def locusOfFocusChanged(self, event, oldLocusOfFocus, newLocusOfFocus):
"""Called when the visual object with focus changes.
Arguments:
- event: if not None, the Event that caused the change
- oldLocusOfFocus: Accessible that is the old locus of focus
- newLocusOfFocus: Accessible that is the new locus of focus
"""
pass
def visualAppearanceChanged(self, event, obj):
"""Called when the visual appearance of an object changes.
This method should not be called for objects whose visual
appearance changes solely because of focus -- locusOfFocusChanged
is used for that. Instead, it is intended mostly for objects
whose notional 'value' has changed, such as a checkbox changing
state, a progress bar advancing, a slider moving, text inserted,
caret moved, etc.
Arguments:
- event: if not None, the Event that caused this to happen
- obj: the Accessible whose visual appearance changed.
"""
pass
def activate(self):
"""Called when this presentation manager is activated."""
pass
def deactivate(self):
"""Called when this presentation manager is deactivated."""
pass
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