class Location(Subject):
def __init__(self, name, service, view, data, caller):
Subject.__init__(self)
self.observers = []
self.name = name
self.caller = caller
self.temperature = Temperature(None)
self.rainfall = Rainfall(None)
self.timestamp = None
self.datestamp = None
self.serviceType = service
self.viewType = view
self.dataType = data
self.client = None
self.timer = None
self.setupClient()
def register(self, newObserver):
self.observers.append(newObserver)
def unregister(self, deleteObserver):
self.observers.remove(deleteObserver)
def notifyObservers(self):
for observer in self.observers:
observer.update(self.temperature.getTemperature(),
self.rainfall.getAmount(), self.datestamp,
self.timestamp)
def setupClient(self):
if self.serviceType == "MelbWeather2":
# set up client and timer
self.client = WebClientMelb()
self.timer = UpdateTimer(300, self.updateData)
# update data for the first time, then start the timer
self.updateData()
self.timer.start()
elif self.serviceType == "WeatherTimeLapse":
# set up client and timer
incompatibleClient = WebClientTimeLapse()
self.client = WebClientTimelapseAdapter(incompatibleClient)
self.timer = UpdateTimer(2, self.updateData)
# update data for the first time, then start the timer
self.updateData()
self.timer.start()
else:
print "Web Client Setup Error: web client name not found"
"""
Updates data of the location's attributes from the WebClient
"""
def updateData(self):
locInfo = self.client.getWeatherData(self.name)
self.setTemperature(locInfo[0])
self.setRainfall(locInfo[1])
self.setDatestamp(locInfo[2])
self.setTimestamp(locInfo[3])
self.notifyObservers()
"""
Removes the location object from the location collection when a monitor is shut down
"""
def removeLocation(self):
self.caller.removeFromCollection(self)
"""
Stops the timer by calling cancel()
"""
def stopTimer(self):
self.timer.cancel()
"""
Getters
"""
def getName(self):
return self.name
def getTemperature(self):
return self.temperature.getTemperature()
def getRainfall(self):
return self.rainfall.getAmount()
def getTimeStamp(self):
return self.timestamp
def getDateStamp(self):
return self.datestamp
"""
Setters
"""
def setTemperature(self, newTemperature):
self.temperature.setTemperature(newTemperature)
def setRainfall(self, newAmount):
self.rainfall.setAmount(newAmount)
def setTimestamp(self, newTimestamp):
self.timestamp = newTimestamp
def setDatestamp(self, newDatestamp):
self.datestamp = newDatestamp
