class DisplayConfigger(ConfigDialog):
"""
Configuration Dialog for the displays. This class handles loading / saving
the configuration.
"""
def __init__(self, ident, path):
# init the StateSaver
self.__backend = StateSaver(ident + "CONFIG")
# may we save already, or is it too early?
self.__may_save = False
# ID for storing the configuration
self.__ident = ident
# the scripting environment with which the config interacts
self.__scripting_environment = None
ConfigDialog.__init__(self, path)
self.set_property("title", _("Configuration"))
#
# Sets the scripting environment to be used.
#
def set_scripting_environment(self, script):
self.__scripting_environment = script
self._set_setter(self.__setter_wrapper)
self._set_getter(self.__scripting_environment.get_value)
self._set_caller(self.__scripting_environment.call_function)
#
# Wraps the config setter handler to include saving config.
#
def __setter_wrapper(self, key, value, datatype):
assert key
self.__scripting_environment.set_value(key, value)
# save config, but not too early
if (self.__may_save):
rep = dtype_repr(datatype, value)
self.__backend.set_key(key, (rep, dtype_name(datatype)))
#
# Build preferences and put elements into the scripting environment
#
def build(self, items):
ConfigDialog.build(self, items)
for c in self.get_config_items():
ident = c.get_prop("id")
if (ident):
self.__scripting_environment.add_element("Prefs", ident, c)
#
# Loads the initial configuration.
#
def load_config(self):
# read stored configuration
for key in self.__backend.list():
if (key.endswith("_TYPE")): continue
rep, dtype = self.__backend.get_key(key)
datatype = dtype_get_type(dtype)
value = dtype_build(datatype, rep)
try:
self.__setter_wrapper(key, value, None)
except:
log("Couldn't pass arguments (%s, %s) to setter."
% (key, value))
# have the children update themselves
for c in self.get_config_items(): c.update()
#
# Removes the configuration.
#
def remove_config(self):
self.__backend.remove()
def show(self):
self.__may_save = True
ConfigDialog.show(self)
