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
|
#!/usr/bin/env python
# vim: sts=4 sw=4 et
# This is a component of LinuxCNC
# classhandler_persistent.py Copyright 2010 Michael Haberler
#
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
'''
example gladevcp handler class with widget and attribute persistence support
'''
from gladevcp.persistence import IniFile,widget_defaults,set_debug,select_widgets
debug = 0
class HandlerClass:
def on_button_press(self,widget,data=None):
print "on_button_press"
self.anint += 1
# show retained attributes as inifile and current values
print "attr\tini\tcurrent"
for k in self.defaults[IniFile.vars].keys():
print "%s\t%s\t%s" % (k,self.defaults[IniFile.vars][k],getattr(self,k,None))
def on_destroy(self,obj,data=None):
'''
save state on application exit
'''
print "on_destroy() - saving state"
self.ini.save_state(self)
def on_restore_defaults(self,button,data=None):
'''
example callback for 'Reset to defaults' button (unused)
'''
print "on_restore_defaults() - setting default state"
self.ini.create_default_ini()
self.ini.restore_state(self)
def __init__(self, halcomp,builder,useropts):
self.halcomp = halcomp
self.builder = builder
self.useropts = useropts
# use the module basename for the ini file:
self.ini_filename = __name__ + '.save'
# choose widgets and attributes to be retained here:
# this descriptor will not retain any attrbuts,
# but the state of all widgets (HAL widgets and Gtk widgets
# (subject to widget types supported by gladevcp.persistence.accessors())
#self.defaults = { IniFile.vars: dict(),
# IniFile.widgets : widget_defaults(<widgetlist>)
# }
# this descriptor will retain the listed attributes, and only
# HAL widgets state:
self.defaults = { IniFile.vars: { 'afloat' : 1.67, 'anint' : 42, 'abool' : True, 'astring': 'sometext' },
IniFile.widgets : widget_defaults(select_widgets(self.builder.get_objects(), hal_only=False,output_only = False))
}
self.ini = IniFile(self.ini_filename,self.defaults, self.builder)
# it is OK to use self.panel.widgets (all widgets) here because only
# widgets whose state was saved as per descriptor will be restored
self.ini.restore_state(self)
def get_handlers(halcomp,builder,useropts):
global debug
for cmd in useropts:
exec cmd in globals()
# get some detail what save/restore etc are doing
set_debug(debug)
return [HandlerClass(halcomp,builder,useropts)]
|
