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## Fonty Python Copyright (C) 2006, 2007, 2008, 2009 Donn.C.Ingle
## Contact: donn.ingle@gmail.com - I hope this email lasts.
##
## This file is part of Fonty Python.
## Fonty Python 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 3 of the License, or
## (at your option) any later version.
##
## Fonty Python 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 Fonty Python. If not, see <http://www.gnu.org/licenses/>.
## Message topics : they identify the functions to run from CPubsub
update_font_view = 10
show_error = 20
show_error_and_abort = 30
show_message = 40
reset_to_page_one = 50
add_pog_item_to_source = 60
remove_pog_item_from_source = 70
print_to_status_bar = 80
install_pog = 90
uninstall_pog = 100
main_button_click = 110
toggle_main_button = 120
target_pog_has_been_selected = 130
source_pog_has_been_selected = 135
change_pog_icon = 140
toggle_targetpog_buttons = 150
clear_targetpog_selection = 160
select_no_view_pog = 170
get_font_view_width = 180
menu_settings = 190
toggle_selection_menu_item = 200
toggle_purge_menu_item = 210
left_or_right_key_pressed = 1000
reset_top_left_adjustments = 2000
## A hack to allow values to return from published topics
globRetVal = {}
## The thing that is held in the dictionary inside CListener
class CTopic:
def __init__(self, function, topic, key):
self.function = function
self.topic = topic
self.key = key
## When you have a function you want to make available, sub() it.
## When you want something to happen somewhere else, then pub () it.
class CPubsub:
def __init__(self):
self.__ears = {}
self.__key = 0
def __del__(self):
del self.__ears
## Makes a topic object and stores it internally.
## Keeps a constantly increasing internal key.
## I used a dictionary, but it prob should just be a list.
## Ah well.
def sub(self, topic, function): #SUBSCRIBE (was newEar)
t = CTopic(function, topic, self.__key)
self.__ears [ self.__key ] = t
self.__key += 1
## Go thru all the topics, find any that match and call their functions, passing any args too.
def pub(self, topic, *args): #PUBLISH (was shout)
#global globRetVal
#m = CMessage(topic, messagelist)
for key, top in self.__ears.iteritems():
if top.topic == topic:
function = top.function
if args:
function(args) #Pass the args only.
else:
function()
## Sample of the use of this stuff:
if __name__ == "__main__":
def dox(*args):
print "i run", args
def detox(*args):
print "yup de too", args
top_dox = 1
p = CPubsub()
#we subscribe two handlers to one topic
p.sub(top_dox, dox)
p.sub(top_dox, detox)
#we pretend we are in another class/widget and we want to send a message:
p.pub(top_dox, 10,20,"AX","BX")
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