#
# timezone_text.py: text mode timezone selection dialog
#
# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006  Red Hat, Inc.
# All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

import sys
import string
import iutil
from time import *
from snack import *
from constants_text import *
from bootloader import hasWindows
from scdate.core import zonetab

from constants import *
import gettext
_ = lambda x: gettext.ldgettext("anaconda", x)

sys.path.append("/usr/share/system-config-date")

class TimezoneWindow:

    def getTimezoneList(self):
        zt = zonetab.ZoneTab()
        zoneList = [ x.tz for x in zt.getEntries() ]
        zoneList.sort()
        return zoneList

    def updateSysClock(self):
	args = ["--hctosys"]
	if self.c.selected():
	    args.append("--utc")

	iutil.execWithRedirect("hwclock", args)
	self.g.setTimer(500)
	self.updateClock()

    def updateClock(self):
        # disable for now
        return
        
#	if os.access("/usr/share/zoneinfo/" + self.l.current(), os.R_OK):
#	    os.environ['TZ'] = self.l.current()
#	    self.label.setText(self.currentTime())
#	else:
#	    self.label.setText("")

    def currentTime(self):
	return "Current time: " + strftime("%X %Z", localtime(time()))

    def __call__(self, screen, anaconda):
	timezones = self.getTimezoneList()
	(default, asUtc) = anaconda.id.timezone.getTimezoneInfo()

# ok, some bug somewhere, I do not manage to get it via installclass ... Jarek
 
        default = "Europe/Zurich" 
        asUTC = 1


        if not default:
	    default = anaconda.id.instLanguage.getDefaultTimeZone(anaconda.rootPath)

	bb = ButtonBar(screen, [TEXT_OK_BUTTON, TEXT_BACK_BUTTON])
	t = TextboxReflowed(30, 
			_("In which time zone are you located?"))

        if not anaconda.isKickstart and not hasWindows(anaconda.id.bootloader):
            asUtc = True

#
# disabling this for now
# 
#	self.label = Label(self.currentTime())
		
	self.l = Listbox(5, scroll = 1, returnExit = 0)

        for tz in timezones:
	    self.l.append(gettext.ldgettext("system-config-date", tz), tz)

	self.l.setCurrent(default.replace("_", " "))
#	self.l.setCallback(self.updateClock)
        
	self.c = Checkbox(_("System clock uses UTC"), isOn = asUtc)
#	self.c.setCallback(self.updateSysClock)

	self.g = GridFormHelp(screen, _("Time Zone Selection"), "timezone",
			      1, 5)
	self.g.add(t, 0, 0)
#	self.g.add(self.label, 0, 1, padding = (0, 1, 0, 0), anchorLeft = 1)
	self.g.add(self.c, 0, 2, padding = (0, 1, 0, 1), anchorLeft = 1)
	self.g.add(self.l, 0, 3, padding = (0, 0, 0, 1))
	self.g.add(bb, 0, 4, growx = 1)

# disabling for now
#	self.updateClock()
#	self.updateSysClock()
#
#	self.g.setTimer(500)
#
#	result = "TIMER"
#	while result == "TIMER":
#	    result = self.g.run()
#	    if result == "TIMER":
#		self.updateClock()

        result = ""
        while 1:
            result = self.g.run()
            rc = bb.buttonPressed (result)
            
            if rc == TEXT_BACK_CHECK:
                screen.popWindow()
                return INSTALL_BACK
            else:
                break

        screen.popWindow()
	anaconda.id.timezone.setTimezoneInfo(self.l.current().replace(" ", "_"), asUtc = self.c.selected())

	return INSTALL_OK