openwebrx-clone/owrx/config.py
2019-05-19 13:17:36 +02:00

101 lines
2.9 KiB
Python

import logging
logger = logging.getLogger(__name__)
class Property(object):
def __init__(self, value = None):
self.value = value
self.callbacks = []
def getValue(self):
return self.value
def setValue(self, value):
if (self.value == value):
return self
self.value = value
for c in self.callbacks:
try:
c(self.value)
except Exception as e:
logger.exception(e)
return self
def wire(self, callback):
self.callbacks.append(callback)
if not self.value is None: callback(self.value)
return self
class PropertyManager(object):
sharedInstance = None
@staticmethod
def getSharedInstance():
if PropertyManager.sharedInstance is None:
PropertyManager.sharedInstance = PropertyManager()
return PropertyManager.sharedInstance
def collect(self, *props):
return PropertyManager({name: self.getProperty(name) if self.hasProperty(name) else Property() for name in props})
def __init__(self, properties = None):
self.properties = {}
self.callbacks = []
if properties is not None:
for (name, prop) in properties.items():
self.add(name, prop)
def add(self, name, prop):
self.properties[name] = prop
def fireCallbacks(value):
for c in self.callbacks:
try:
c(name, value)
except Exception as e:
logger.exception(e)
prop.wire(fireCallbacks)
return self
def __contains__(self, name):
return self.hasProperty(name)
def __getitem__(self, name):
return self.getPropertyValue(name)
def __setitem__(self, name, value):
if not self.hasProperty(name):
self.add(name, Property())
self.getProperty(name).setValue(value)
def __dict__(self):
return {k:v.getValue() for k, v in self.properties.items()}
def hasProperty(self, name):
return name in self.properties
def getProperty(self, name):
if not self.hasProperty(name):
self.add(name, Property())
return self.properties[name]
def getPropertyValue(self, name):
return self.getProperty(name).getValue()
def wire(self, callback):
self.callbacks.append(callback)
return self
def unwire(self, callback):
self.callbacks.remove(callback)
return self
def defaults(self, other_pm):
for (key, p) in self.properties.items():
if p.getValue() is None:
p.setValue(other_pm[key])
return self
def loadConfig(self, filename):
cfg = __import__(filename)
for name, value in cfg.__dict__.items():
if name.startswith("__"):
continue
self[name] = value
return self