def __init__(self):
self.connection = Connection.getInstance()
self.presentation = Presentation(path = None)
self.roster = Roster()
self.forum = Forum()
self.questionList = QuestionList()
self.__saveListeners = {}
# set in WhiteboardNav
self.RefreshSlide = None
self.Redraw = None
# the logged in user, None if logged out
self.user = None
class EClass():
__instance = None
@staticmethod
def GetInstance():
if EClass.__instance == None:
EClass.__instance = EClass()
return EClass.__instance
def __init__(self):
self.connection = Connection.getInstance()
self.presentation = Presentation(path = None)
self.roster = Roster()
self.forum = Forum()
self.questionList = QuestionList()
self.__saveListeners = {}
# set in WhiteboardNav
self.RefreshSlide = None
self.Redraw = None
# the logged in user, None if logged out
self.user = None
def Login(self, username, password, onSuccess, onFailure):
print('From EClass.Login(): ' + username + ' ' + password)
def onResponse(authResponse):
if authResponse.success:
if authResponse.role == 'presenter':
self.user = Presenter(username, password)
else:
self.user = Student(username, password)
# warning! contains different data for presenter and student
# see networking.html for what it contains
self.classes = authResponse.classes
onSuccess()
else:
onFailure(authResponse.reason)
self.connection.authenticate(username, password, onResponse)
def setUpLayerManager(self):
if len(self.presentation.slides) != 0:
layers = self.presentation.slides[self.presentation.currSlideNum].layers
self.layerManagerModel = LayerManagerModel(self, layers)
else:
self.layerManagerModel = LayerManagerModel(self, [])
def exit(self):
self.connection.close()
sys.exit()
def savePresentationToFile(self, path):
data = {}
for identifier in self.__saveListeners:
data[identifier] = self.__saveListeners[identifier](
'save to file', identifier
)
f = open(path, 'w')
import json
json.dump(data, f)
f.close()
def loadPresentationFromFile(self, path):
if path.endswith('.creampie'):
f = open(path, 'r')
import json
data = json.load(f)
self.loadFileData(data)
elif path.endswith('.html'):
EClass.GetInstance().presentation.SetPath(path)
EClass.GetInstance().presentation.Slidify()
EClass.GetInstance().setUpLayerManager()
else:
raise Exception('unknown filetype: ' + path)
def registerOnSaveListener(self, identifier, callback):
if identifier in self.__saveListeners:
raise Exception("'" + identifier + "'is not unique.")
self.__saveListeners[identifier] = callback
def getStudentInitialData(self):
data = {}
for identifier in self.__saveListeners:
data[identifier] = self.__saveListeners[identifier](
'save initial data for student', identifier
)
return data
def loadInitialData(self, data):
for identifier in data:
# obj = whatever you returned from 'callback' in registerOnSaveListener
obj = data[identifier]
if identifier == 'presentation':
self.presentation.loadInitialData(obj)
elif identifier == 'forum':
self.forum.loadInitialData(obj)
else:
if obj is not None:
raise Exception(
"Unhandled initial data '" + identifier + "'"
)
self.refreshView()
def loadFileData(self, data):
for identifier in data:
# obj = whatever you returned from 'callback' in registerOnSaveListener
obj = data[identifier]
if identifier == 'presentation':
self.presentation.loadFileData(obj)
else:
if obj is not None:
raise Exception(
"Unhandled file data '" + identifier + "'"
)
self.refreshView()
def refreshView(self):
def _refresh():
assert self.RefreshSlide is not None
self.RefreshSlide()
assert self.Redraw is not None
self.Redraw()
import wx
wx.CallLater(1, _refresh) #lol
