Hi there people. I'm pretty new at PyQt, or Qt at all,and was trying for some time to write few things with variable success. This time I feel really stuck, so I decide to ask for the kind help of someone, who actually knows what to do

So here is my case:

I have a QT App (PyQt actually), which reads some data from a server based sql database, and updates a QStandardItemModel which is used by a QTreeView. I may be wrong, but I guessed the StandardModel is a better choise for my needs, because it also reads the messages from some server node across our network and so on. So my actual question is how can I refresh the QStandartItemModel, but retain the selected row also. I've made a QThread which emits a "refresh" signal every 5 second, and connected it to a custom pyqtSlot in my StandartItemModel which actually calls the __init__ procedure of the model and then reattaches the model to the QTreeView:
Qt Code: 
  1. class fileList(QtGui.QStandardItemModel):
  2. 	def __init__(self, parent, viewer, thread = None):
  3. 		QtGui.QStandardItemModel.__init__(self,parent)
  4. 		self.viewer = viewer
  5. 		"""
  6. 		Code...Code...Code
  7. 		"""
  8. 		if self.viewer:
  9. 			self.viewer.setAlternatingRowColors(True)
  10. 			self.viewer.setSortingEnabled(True)
  11. 			self.viewer.setIndentation(0)
  12. 			self.viewer.setSelectionMode(QtGui.QAbstractItemView.MultiSelection)
  13.  
  14. 		# This connects the QThread signal to the model's slot
  15. 		if thread:
  16. 			global refreshThread
  17. 			self.connect(refreshThread, QtCore.SIGNAL("refresh()"), self.viewer, QtCore.SLOT('reset()'))
  18.  
  19. 	@QtCore.pyqtSlot()
  20. 	def rebuild(self, thread = 0):
  21. 		state = QtGui.QAbstractItemView.state(self.viewer)
  22. 		if state:
  23. 			return # Halt if editing
  24. 		self.__init__(None, self.viewer, 0)
  25. 		self.viewer.setModel(self)
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and the QThread Class:
Qt Code: 
  1. class Reloader(QtCore.QThread):
  2. 	def __init__(self, parent = None):
  3. 		QtCore.QThread.__init__(self, parent)
  4.  
  5. 	def run(self):
  6. 		while True:
  7. 			self.timeout = REFRESH if REFRESH != 0 else 0.1
  8. 			if self.timeout == -1:
  9. 				print "Refresh Halted"
  10. 				break
  11. 			self.emit(QtCore.SIGNAL('refresh()'))
  12. 			time.sleep(self.timeout)
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So what is the right way to refresh the QStandardItemModel and retain the selection? I've tried using a QSelectionModel to which I added the selection and the set it as a selection model for the model viewer, but it messes up with my active selection until it refreshes, so I suspect it's totally wrong