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
107
108
109
110
111
112
|
#!/usr/bin/python
# .+
#
# .identifier : $Id:$
# .context : Application View Controller
# .title : tree view widget display capabilities (GTK)
# .kind : python source
# .author : Fabrizio Pollastri
# .site : Revello - Italy
# .creation : 3-Aug-2008
# .copyright : (c) 2008 Fabrizio Pollastri.
# .license : GNU General Public License (see below)
#
# This file is part of "AVC, Application View Controller".
#
# AVC 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.
#
# AVC 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, see <http://www.gnu.org/licenses/>.
#
# .-
import gobject #--
import gtk #- gimp tool kit bindings
import gtk.glade # glade bindings
from avc import * # AVC
import copy # object cloning support
GLADE_XML = 'gtk_listtreeview.glade' # GUI glade descriptor
UPDATE_PERIOD = 2000 # ms
class Example(AVC):
"""
Showcase of display capabilities for the tree view widget
"""
def __init__(self):
# create GUI
self.glade = gtk.glade.XML(GLADE_XML)
# autoconnect GUI signal handlers
self.glade.signal_autoconnect(self)
# make tree view rows reorderable
self.glade.get_widget('list__treeview').set_reorderable(True)
self.glade.get_widget('tree__treeview').set_reorderable(True)
# connected variables
self.list = {'head':['col1 int','col2 str'], \
'body':[[1,'one'],[2,'two'],[3,'three']]}
self.list_work = copy.deepcopy(self.list)
self.tree = {'head':['col1 int','col2 str'],'body':{ \
# root rows
'1':[1,'one'], \
'2':[2,'two'], \
# children of root row '1'
'1.1':[11,'one one'], \
'1.2':[12,'one two'], \
# children of root row '2'
'2.1':[21,'two one'], \
'2.2':[22,'two two']}}
# start variables update
update = self.update()
gobject.timeout_add(UPDATE_PERIOD,update.next)
def update(self):
"""
Tabular data rows data are rolled down.
"""
rows_num = len(self.list['body'])
while True:
# save last row of data
last_row = self.list_work['body'][-1]
# shift down one position each data row
for i in range(1,rows_num):
self.list_work['body'][-i] = \
self.list_work['body'][-1-i]
# copy last row into first position
self.list_work['body'][0] = last_row
# copy working copy into connected variable
self.list = self.list_work
yield True
def on_destroy(self,window):
"Terminate program at window destroy"
gtk.main_quit()
#### MAIN
example = Example() # instantiate the application
example.avc_init() # connect widgets with variables
gtk.main() # run GTK event loop until quit
#### END
|
