/usr/share/doc/python-gtkmvc-doc/examples/adapters/user_class.py is in python-gtkmvc-doc 1.99.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 | # Author: Roberto Cavada <roboogle@gmail.com>
#
# Copyright (c) 2007 by Roberto Cavada
#
# pygtkmvc is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# pygtkmvc 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free
# Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110, USA.
# 02111-1307 USA.
#
# For more information on pygtkmvc see
# <http://pygtkmvc.sourceforge.net> or email to the author Roberto
# Cavada <roboogle@gmail.com>. Please report bugs to
# <roboogle@gmail.com>.
import _importer
from gtkmvc import Model, Controller, View, Observable
from gtkmvc.adapters import UserClassAdapter
import gtk
# This example makes use of a user-defined class that contains a
# setter and a getter for an internal variable. When the class is
# instantiated, a maximum value is specified. That limit represents
# the maximum value that the internal variable can be set at.
#
# The controller declares an adapter that adapts a text entry and
# the user-class instance. As the user class raises a ValueError
# exception when trying setting a bad value, the adapter is
# requested to handle error conditions through value_error
# parameter. Try to set a value greater than 10 by editing the text
# entry.
class UserClass (Observable):
def __init__(self, max_val):
Observable.__init__(self)
self.__x = 0
self.max_val = max_val
return
@Observable.observed
def set_x(self, v):
if v > self.max_val:
raise ValueError("x cannot be greater than %d" % self.max_val)
self.__x=v
return
def get_x(self): return self.__x
pass
class MyView (View):
glade = "adapters.glade"
top = "window2"
pass
class MyModel (Model):
xx = UserClass(10)
__observables__ = ("xx",)
pass
class MyCtrl (Controller):
def register_adapters(self):
a = UserClassAdapter(self.model, "xx", "get_x", "set_x",
value_error=myerr)
a.connect_widget(self.view["en2"])
self.adapt(a)
return
def on_button2_clicked(self, button):
self.model.xx.set_x(self.model.xx.get_x() + 1)
return
def on_window2_delete_event(self, w, e):
gtk.main_quit()
return True
pass
# ----------------------------------------------------------------------
def myerr(adapt, name, val):
print "Error from", adapt, ":", name, ",", val
adapt.update_widget()
return
m = MyModel()
v = MyView()
c = MyCtrl(m, v)
m.xx.set_x(5)
gtk.main()
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