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# Copyright (C) 2009, Tutorius.org
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
from ..filters import EventFilter
from ..properties import TUAMProperty, TEventType
from ..gtkutils import find_widget
class GtkWidgetEventFilter(EventFilter):
"""
Basic Event filter for Gtk widget events
"""
object_id = TUAMProperty()
event_name = TEventType('clicked')
def __init__(self, object_id=None, event_name=None):
"""Constructor
@param object_id object fqdn-style identifier
@param event_name event to attach to
"""
super(GtkWidgetEventFilter,self).__init__()
self._callback = None
self.object_id = object_id
self.event_name = event_name
self._widget = None
self._handler_id = None
def install_handlers(self, callback, **kwargs):
"""install handlers
@param callback default EventFilter callback arg
@param activity keyword argument activity must be present to install
the event handler into the activity's widget hierarchy
"""
super(GtkWidgetEventFilter, self).install_handlers(callback, **kwargs)
if not "activity" in kwargs:
raise TypeError("activity argument is Mandatory")
#find the widget and connect to its event
self._widget = find_widget(kwargs["activity"], self.object_id)
self._handler_id = self._widget.connect( \
self.event_name, self.do_callback )
def remove_handlers(self):
"""remove handlers"""
super(GtkWidgetEventFilter, self).remove_handlers()
#if an event was connected, disconnect it
if self._handler_id:
self._widget.handler_disconnect(self._handler_id)
self._handler_id=None
__event__ = {
"name" : "GtkWidgetEventFilter",
"display_name" : "GTK Event catcher",
"icon" : "player_play",
"class" : GtkWidgetEventFilter,
"mandatory_props" : ["object_id", "event_name"],
"test" : True
}
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