[carknue]

Is there a limit of 20 filds into one form? Python crashes when I try to save a form with 21 fields.

[gaba88]

Originally Posted by carknue

Is there a limit of 20 filds into one form? Python crashes when I try to save a form with 21 fields.

hi carknue
it is really not mentioned anywhere in the documentation that we can use only 20 fields but yes there can be a limit and it can be 20 which make your python crash

[bogdan.galiceanu]

I tried it on my N95 and S60 3rd edition FP2 emulator. In both cases I got the "KErrNoMemory" error with 22 fields (21 worked fine). So as far as I can tell there isn't a set limit for the number of fields in a form, just that Python can't allocate memory for so many fields.

[croozeus]

I think there are some restrictions to the form field text, may be 80 characters; but number of form fields may depend on memory available.

Just try having 18 fields with two applications running in the background and see if it works !

Br,
Croozeus

[shubhendra]

Yup 21 fields in form do work in emulator.

[gaba88]

hi subhendra
correct in emulator 21 fileds worked for me but in the n70 it only worked for 20 field and after that the python crashes.

[carknue]

I can excecute the Form with 21 Fields on the Phone, but when I change a field I cannot close the Form after saving. When I try to close the form without saving, Python shuts down completely, my app and also the script shell without any error message. 20 Fields work fine. I will try a greater Heap size with ensymble. This is the setup form class.

class Setup( object ):
	# Config constants
	SOUND_OFF = 0
	SOUND_SOUND = 1
	SOUND_VOICE = 2
	SOUND_VOICE_NEW = 3

	LIGHT_OFF = 0
	LIGHT_CELL = 1
	LIGHT_ALWAYS = 2
	LIGHT_NEW_CELL = 3

	VOICE_CELL = 0
	VOICE_BAND = 1
	VOICE_BAND_LAC = 2
	VOICE_BAND_LAC_NET = 3
	VOICE_BAND_CLF = 4

	GPS_INTERNAL = 0
	GPS_EXTERNAL = 1
	GPS_ASSISTED = 2
	
	CLF_DEVICE = 0
	CLF_CARD = 1
	
	WLAN_DEVICE = 0
	WLAN_CARD = 1

	WLAN_NOTIFY_OFF = 0
	WLAN_NOTIFY_ADHOC = 1
	WLAN_NOTIFY_OPEN = 2
	
	BT_DEVICE = 0
	BT_CARD = 1
	
	BT_NOTIFY_OFF = 0
	BT_NOTIFY_NEW_VOICE = 1
	BT_NOTIFY_NEW_LIGHT = 2
	BT_NOTIFY_NEW_VOICE_LIGHT = 3
	
	COLOR_THEME_BLUE = 0
	COLOR_THEME_BLACK = 1
	COLOR_THEME_RED = 2
	COLOR_THEME_GREEN = 3
	
	FONT_SIZE_SMALL = 0
	FONT_SIZE_MEDIUM = 1
	FONT_SIZE_LARGE = 2
	
	WPS_OFF = 0
	WPS_ON = 1
	
	## The constructor.
	def __init__( self ):
		global config
		## Config options
		self._iSound = [u'OFF', u'Sound', u'Voice', u'Only new']
		self._iLight = [u'OFF', u'Cell change on', u'Always on', u'New cells only']
		self._iVoice = [u'Cell only',
		                u'Band & Cell',
		                u'Band & Cell & LAC',
		                u'Band & Cell & LAC & NET',
						u'Band & CLF']
		self._iGPS = [u'Internal', u'External', u'Assisted']
		self._iCLF = [u'Device', u'Memory Card']
		self._iWLAN_Store = [u'Device', u'Memory Card']
		self._iWLAN_Notify = [u'OFF', u'AD-HOC', u'Open']
		self._iBT_Store = [u'Device', u'Memory Card']
		self._iBT_Notify = [u'OFF', u'Voice', u'Light', u'Voice & Light']
		self._iCOLOR_THEME = [u'Blue', u'Black', u'Red', u'Green']
		self._iFONT_SIZE = [u'Small', u'Medium', u'Large']
		#self._iWPS = [u'OFF', u'ON']
		## Setup Menu
		self._iMenu = [(u'Defaults', self.defaultConfig),
		               (u'Reload Config File', self.loadConfig)]
		## Form fields
		self.configToForm()
		#flags = appuifw.FFormEditModeOnly
		flags = appuifw.FFormEditModeOnly + appuifw.FFormDoubleSpaced
		self._iForm = appuifw.Form(self._iFields, flags)
		self._iForm.save_hook = self.saveForm
		#self._iForm.flags = appuifw.FFormEditModeOnly
		self._iForm.menu = self._iMenu

	def configToForm(self):
		global config
		_iFields = [( u'Cellselection Notifier', 'combo', ( self._iSound, config['CellNotify'] ) ),
		            ( u'Light', 'combo', ( self._iLight, config['Light'] ) ),
		            ( u'WLAN Scan [s] (off=0 / on>9)','number', config['Refresh'] ),
		            ( u'Volume','number', config['Volume'] ),
		            ( u'Voice Text','combo', (self._iVoice, config['Voice']) ),
		            ( u'GPS', 'combo', ( self._iGPS, config['GPS'] ) ),
					( u'Neighbour Radius [km]', 'float', config['Neighbour Radius']),
					( u'WLAN Autosave Interval [min]','number', config['WLANInter']),
					( u'CLF stored on','combo', (self._iCLF, config['CLF'])),
					( u'WLAN Database stored on','combo', (self._iWLAN_Store, config['WLAN_STORE'])),
					( u'WLAN Notifier','combo', (self._iWLAN_Notify, config['WLAN_NOTIFY'])),
					( u'Map Zoom Level (1-12)','number', config['MAPZOOM']),
					( u'Sec between BT Scans 0=off','number', config['BT_SCAN']),
					( u'BT Database stored on','combo', (self._iBT_Store, config['BT_STORE'])),
					( u'BT Notifier','combo', (self._iBT_Notify, config['BT_NOTIFY'])),
					( u'BT Autosave Interval [min]','number', config['BT_Autosave']),
					( u'BT Scan Timeout [s]','number', config['BT_SCAN_TIMEOUT']),
					( u'CLF Autosave Interval [min]','number', config['CLF_AUTOSAVE']),
					( u'Color Theme','combo', (self._iCOLOR_THEME, config['COLOR_THEME'])),
					( u'Font Size','combo', (self._iFONT_SIZE, config['FONT_SIZE']))]
					#( u'WLAN Positioning System', 'combo', (self._iWPS, config['WPS']))]
					
		## XXX: live update doesn't work yet. Need fixing
		if hasattr(self, '_iFields'):
			for i in range(len(_iFields)):
				self._iFields[i] = _iFields[i]
		else:
			self._iFields = _iFields

	def formToConfig(self):
		global config
		## XXX: must find elegant way for conversion Form <-> config
		config = {
			'CellNotify': self._iFields[0][2][1],
			'Light': self._iFields[1][2][1],
			'Refresh': self._iFields[2][2],
			'Volume': self._iFields[3][2],
			'Voice': self._iFields[4][2][1],
			'GPS': self._iFields[5][2][1],
			'Neighbour Radius': self._iFields[6][2],
			'WLANInter': self._iFields[7][2],
			'CLF': self._iFields[8][2][1],
			'WLAN_STORE': self._iFields[9][2][1],
			'WLAN_NOTIFY': self._iFields[10][2][1],
			'MAPZOOM': self._iFields[11][2],
			'BT_SCAN': self._iFields[12][2],
			'BT_STORE': self._iFields[13][2][1],
			'BT_NOTIFY': self._iFields[14][2][1],
			'BT_Autosave': self._iFields[15][2],
			'BT_SCAN_TIMEOUT': self._iFields[16][2],
			'CLF_AUTOSAVE': self._iFields[17][2],
			'COLOR_THEME': self._iFields[18][2][1],
			'FONT_SIZE': self._iFields[19][2][1]}
			#'WPS': self._iFields[20][2][1]
			
		cfgfile = open(configfile, 'wt')
		cfgfile.write(repr(config))
		cfgfile.close()

	def defaultConfig(self):
		global config, defconfig
		config = defconfig.copy()
		self.configToForm()
		appuifw.note(u"Please reopen the Setup dialog.")

	def loadConfig(self, silent=False):
		global config
		config = defconfig.copy()
		try:
			cfgfile = open(configfile, 'rt')
			content = cfgfile.read()
			cfgfile.close()

			config.update(eval(content))
			if not silent:
				appuifw.note(u"Please reopen the Setup dialog.")
		except IOError, error:
			if not silent:
				appuifw.note(unicode(error),'error')
		self.configToForm()

	## Displays the form.
	def execute( self ):
		self._iForm.execute( )

	## save_hook send True if the form has been saved.
	def saveForm( self, aConfig ):
		global config
		self._iFields = aConfig
		self.formToConfig()

[gaba88]

hi carknue
yes that is really a good option to try with bigger heap size using the ensymble tool.
the problem in your case is totally on the heap size as number of fields increases the dynamic memory required increases which make the python crash.

[carknue]

I tried with --heapsize=64k,2M. Still crashes after saving and closing form with Python 1.4.4. So if this is not a bug that could be fixed, the only solution would be to create a 2nd form.

[gaba88]

Originally Posted by carknue

I tried with --heapsize=64k,2M. Still crashes after saving and closing form with Python 1.4.4. So if this is not a bug that could be fixed, the only solution would be to create a 2nd form.

hi carknue again
really i was just going to give you the same suggestion but you find it before me.
its advisable to use two forms as the forms with more than 20 field is very huge in size.