Could any of you please define the interface to the session object.

As I understood, session is used to show the screen box on the screen, my plugin requires that when the user select and press OK, then the current screen disappear and a new one appears.

I check the simplerss plugin which perform a similar thing, I can see that following line is execited:

session.openWithCallback(closed, RSSSetup, rssPoller)

My guess is that we are trying to open the new screen but I do not understand what the following parameters are, like close, RSSSetup and rssPoller.

I guess that it is telling the I have to open a new screen and and before that I have to call the self.close function, and the new screen should be according to the RSSSetup class. But I'm not sure, I actually think thatI'm trying to let things fit.

Could any one of you tell me how to interpret this session.openWithCallBack command and how many parameters I can include in the call and what will the return value be.

cheers.

ritzMo,

Thanks for the tentative answer. I will do some study as you suggested. Actually the information about mytest.py was quite vital for me so I will check that now

So,

# Session.open:
# * push current active dialog ('current_dialog') onto stack
# * call execEnd for this dialog
# * clear in_exec flag
# * hide screen
# * instantiate new dialog into 'current_dialog'
# * create screens, components
# * read, apply skin
# * create GUI for screen
# * call execBegin for new dialog
# * set in_exec
# * show gui screen
# * call components' / screen's onExecBegin
# ... screen is active, until it calls 'close'...

which means that I can call self.session.openWithCallback(...) from within a screen and it will call execEnd for the old and call execBegin for the new.

I'm calling self.session.openWithCallback(...) in line 64 but it seems that is does not like doing this from within the screen or something

class SelectCountry(Screen):
	skin = """
		<screen position="90,95" size="560,430" title="NTP Update Manager" >
			  <widget name="menu" position="10,0" size="190,250" scrollbarMode="showOnDemand" />
		</screen>
		"""


	def __init__(self, session):
		self.skin = NTPManager.skin
		self.session = session
		Screen.__init__(self, session)

		list = []
		for contenant in xmlparse.getElementsByTagName("contenant"):
			for contry in contenant.getElementsByTagName("country"):
				list.append(contry.getAttribute("name").encode("utf8"))


		self["menu"] = MenuList(list)
		self["actions"] = ActionMap(["NTPServerSelectDialogActions"],
		{
			"select"  	:	self.keySearch(xmlparse),
			"cancel"  	:	self.keyCancel,
		}, -2)




	def keySearch(self, xmlparse):
		self.close(False)




	def keyCancel(self):
		self.close(False)


    
class NTPManager(Screen):
	skin = """
		<screen position="90,95" size="560,430" title="NTP Update Manager" >
			  <widget name="menu" position="10,0" size="550,420" scrollbarMode="showOnDemand" />
		</screen>
		"""


	def __init__(self, session):
		self.skin = NTPManager.skin
		self.session = session
		Screen.__init__(self, session)

		list = []
		xmlfile = "/usr/lib/enigma2/python/Plugins/Extensions/NTPUpdateManager/ntpurls.xml"
		if os.path.isfile(xmlfile):
			xmlparse = xml.dom.minidom.parse(xmlfile)
			for contenant in xmlparse.getElementsByTagName("contenant"):
				list.append(contenant.getAttribute("cont").encode("utf8"))


			self["menu"] = MenuList(list)
			self["actions"] = ActionMap(["NTPServerSelectDialogActions"],
			{
				"select"  	:	self.keySearch(xmlparse),
				"cancel"  	:	self.keyCancel,
			}, -2)
		else:
			self.close(True)




	def keySearch(self, xmlparse):
		self.session.openWithCallback(self.keyCancel, SelectCountry, xmlparse)


	def keyCancel(self):
		self.close(False)




def main(session, **kwargs):
	session.open(NTPManager)




def Plugins(**kwargs):
	return PluginDescriptor(
		name="NTP Update Manager",
		description=_("Select the NTP server and start NTPupdate"),
		where = [ PluginDescriptor.WHERE_EXTENSIONSMENU, PluginDescriptor.WHERE_PLUGINMENU ],
		icon = "plugin.png", fnc = boundFunction(main))

And I'm getting the following in trace back. If you have any idea, then please write it, else I will write back when I figure that out.

modal open are allowed only from a screen which is modal!

ritzMo,

Thanks for the review and input. That was very much of help. Please note that I'm very new in Python, so this was learning by doing

I was wondering whether it really need to be in 2 different classes or whether it was enough to do on the same class, e.g. (starting from line 62 below):

def keySearch(self):
	list = []
	for contenant in self.xmlparse.getElementsByTagName("contenant"):
		for contry in contenant.getElementsByTagName("country"):
			list.append(contry.getAttribute("name").encode("utf8"))


	self["menu"] = MenuList(list)
	self["actions"] = ActionMap(["NTPServerSelectDialogActions"],
	{
		"select"  	:	self.keySelCount,
		"cancel"  	:	self.keyCancel,
	}, -2)




	def keySelCount(self):
		self.close(False)


	def keyCancel(self):
		self.close(False)

now that did not work anyhow.

Sure, that was a paste issue wrt to the idents

The idea is that have an xml file with contenants, countries. The user select the contenant then select the country and based on the selection the plugin extract the correct URL and use it for the ntp update script.

So, in line 16 below, I should implement fethcing the test from the text from XML and send it as a parameter to the script that executes ntpupdate.

My question was, if I do as below
self("menu") = MenuList(list)

then I clear list and start to append new things to it, will that update the menu list in the screen with the new content? If that is possible, then I can instead of opening a new screen, just clear the current screen from the contenants and add the list of the counteries.