Persistant Persistence Problem
14 Nov 2012 15:20 #26574
by Miselph
Persistant Persistence Problem was created by Miselph
Hello all,
I am trying to use persistence with gladevcp to store some values between sessions.
I included the gladevcp.persistence module and did everything it said in the instructions here
However, it doesn't work. I get the following error:
any ideas what is going wrong?
Here is my code:
I am trying to use persistence with gladevcp to store some values between sessions.
I included the gladevcp.persistence module and did everything it said in the instructions here
However, it doesn't work. I get the following error:
Traceback (most recent call last):
File "/usr/bin/gladevcp", line 122, in load_handlers
objlist = h(halcomp,builder,useropts)
File "./panel.py", line 62, in get_handlers
return [HandlerClass(halcomp,builder,useropts)]
File "./panel.py", line 37, in __init__
IniFile.vars : { 'nhits' : 0, 'a': 1.67, 'd': True ,'c' : "a string"},
NameError: global name 'IniFile' is not defined
any ideas what is going wrong?
Here is my code:
import hal
import glib
import time
import gtk
import gladevcp.persistence
debug = 1
class HandlerClass:
'''
class with gladevcp callback handlers
'''
def __init__(self, halcomp,builder,useropts):
'''
Handler classes are instantiated in the following state:
- the widget tree is created, but not yet realized (no toplevel window.show() executed yet)
- the halcomp HAL component is set up and the widhget tree's HAL pins have already been added to it
- it is safe to add more hal pins because halcomp.ready() has not yet been called at this point.
after all handlers are instantiated in command line and get_handlers() order, callbacks will be
connected with connect_signals()/signal_autoconnect()
The builder may be either of libglade or GtkBuilder type depending on the glade file format.
'''
self.halcomp = halcomp
self.builder = builder
self.useropts = useropts
self.defaults = {
# the following names will be saved/restored as method attributes
# the save/restore mechanism is strongly typed - the variables type will be derived from the type of the
# initialization value. Currently supported types are: int, float, bool, string
IniFile.vars : { 'nhits' : 0, 'a': 1.67, 'd': True ,'c' : "a string"},
# to save/restore all widget's state which might remotely make sense, add this:
IniFile.widgets : widget_defaults(builder.get_objects())
# a sensible alternative might be to retain only all HAL output widgets' state:
# IniFile.widgets: widget_defaults(select_widgets(self.builder.get_objects(), hal_only=True,output_only = True)),
}
self.ini_filename = __name__ + '.ini'
self.ini = IniFile(self.ini_filename,self.defaults,self.builder)
self.ini.restore_state(self)
def on_destroy(self,obj,data=None):
self.ini.save_state(self)
def get_handlers(halcomp,builder,useropts):
'''
this function is called by gladevcp at import time (when this module is passed with '-u <modname>.py')
return a list of object instances whose methods should be connected as callback handlers
any method whose name does not begin with an underscore ('_') is a callback candidate
the 'get_handlers' name is reserved - gladevcp expects it, so do not change
'''
return [HandlerClass(halcomp,builder,useropts)]
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15 Nov 2012 03:39 #26594
by mhaberler
Replied by mhaberler on topic Persistant Persistence Problem
yes, you need to import IniFile like so:
from gladevcp.persistence import IniFile
see working code in configs/gladevcp/complex/complex.py
- Michael
from gladevcp.persistence import IniFile
see working code in configs/gladevcp/complex/complex.py
- Michael
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