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# Copyright (C) 2009, Tutorius.org
# Copyright (C) 2009, Vincent Vinet <vince.vinet@gmail.com>
#
# 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
import gtk
import logging
from sugar.tutorius.dialog import TutoriusDialog
logger = logging.getLogger("tutorius")
class Event:
def __init__(self, object_name, event_name ):
self.object_name = object_name
self.event_name = event_name
def test(self, sig, name):
if self.object_name == name and self.event_name == sig:
return True
return False
class Tutorial (object):
EVENTS = [
"focus",
"button-press-event",
"enter-notify-event",
"leave-notify-event",
"key-press-event",
"text-selected",
"clicked",
]
IGNORED_WIDGETS = [
"GtkVBox",
"GtkHBox",
"GtkAlignment",
"GtkNotebook",
"GtkButton",
"GtkToolItem",
"GtkToolbar",
]
def __init__(self, name, fsm):
object.__init__(self)
self.name = name
self.state_machine = fsm
self.handlers = []
self.activity = None
#self.setState("INIT")
#self.state="INIT"
#self.register_signals(self.activity, self.handleEvent, max_depth=10)
def attach(self, activity):
#For now, absolutely detach if a previous one!
if self.activity:
self.detach()
self.activity = activity
self.state="INIT"
self.register_signals(self.activity,self.handleEvent, max_depth=10)
def detach(self):
self.disconnectHandlers()
self.activity = None
def handleEvent(self, *args):
sig, objname = args[-1]
logger.debug("EVENT %s ON %s" % (sig, objname) )
for transition, next in self.state_machine[self.state]["Events"]:
if transition.test(sig,objname):
logger.debug("====NEW STATE: %s====" % next)
self.state = next
dlg = TutoriusDialog(self.state_machine[self.state]["Message"])
dlg.setButtonClickedCallback(dlg.closeSelf)
dlg.run()
# @staticmethod
# def logEvent(obj, *args):
# logger.debug("%s" % str(args[-1]))
def disconnectHandlers(self):
for t, id in self.handlers:
t.disconnect_handler(id)
# def setState(self,name):
# self.disconnectHandlers()
# self.state = name
# newstate = ABIWORD_MEF.get(name,())
# for event, n in newstate:
# target = self.activity
# try:
# for obj in event.object_name.split("."):
# target = getattr(target,obj)
# id = target.connect(self.handler,(event.object_name, event.event_name))
# self.handlers.append(target, id)
# id = target.connect(Tutorial.logEvent,"EVENT %s ON %s" % (event.object_name, event.event_name))
# self.handlers.append(target, id)
# except Exception, e:
# logger.debug(str(e))
def register_signals(self,object,handler,prefix=None,max_depth=None):
"""
Recursive function to register event handlers on an object
and it's children. The event handler is called with an extra
argument which is a two-tuple containing the signal name and
the FQDN-style name of the object that triggered the event.
This function registers all of the events listed in
Tutorial.EVENTS and omits widgets with a name matching
Tutorial.IGNORED_WIDGETS from the name hierarchy.
Example arg tuple added:
("focus", "Activity.Toolbox.Bold")
Side effects:
-Handlers connected on the various objects
-Handler ID's stored in self.handlers
@param object the object to recurse on
@param handler the handler function to connect
@param prefix name prepended to the object name to form a chain
@param max_depth maximum recursion depth, None for infinity
"""
#Gtk Containers have a get_children() function
if hasattr(object,"get_children") and \
hasattr(object.get_children,"__call__"):
for child in object.get_children():
if max_depth is None or max_depth > 0:
#Recurse with a prefix on all children
pre = ".".join( \
[p for p in (prefix, object.get_name()) \
if not (p is None or p in Tutorial.IGNORED_WIDGETS)] \
)
self.register_signals(child,handler,pre,max_depth-1)
name = ".".join( \
[p for p in (prefix, object.get_name()) \
if not (p is None or p in Tutorial.IGNORED_WIDGETS)] \
)
#register events on the object if a widget XXX necessary to check this?
if isinstance(object,gtk.Widget):
for sig in Tutorial.EVENTS:
try:
self.handlers.append( (object,object.connect(sig,handler,(sig, name) )) )
except TypeError:
continue
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