# -*- coding: iso-8859-15 -*-
import os
import urwid, sys
import urwid.curses_display
g_radio_button_group = []

def on_mode_button(button, state):
    global g_selected
    if state:
        g_selected= button.get_label()

def exit_command(*args):
    raise urwid.ExitMainLoop()

def refresh_form():
    if not login_user_id:
        user_input.set_edit_text("")
        pile_content = user_screen_pile
        pile_content.set_focus(user_padded)
    elif current_screen=='CARTON':
        carton_input.set_edit_text("")
        carton_error.set_text("")
        pile_content = carton_screen_pile
        pile_content.set_focus(carton_padded)
    elif current_screen=='CARTON_ERROR':
        return

    root_filler_mapped = urwid.AttrMap(urwid.Filler(pile_content, 'top'), 'background')
    loop.widget = root_filler_mapped


def change_screen(screen_name):
    global  pile_content, current_screen, root_filler_mapped, loop, hint_text, g_radio_button_group
    if screen_name=='LOAD':
        current_screen='LOAD'
        hint_text.set_text("CTRL-R : Refrescar\nCTRL-X : Salir")
        pile_content = substitute_screen_pile
        load_input.set_edit_text('')
        pile_content.set_focus(load_padded)
    elif screen_name=='CARTON':
        current_screen='CARTON'
        carton_input.set_edit_text("")
        hint_text.set_text("CTRL-R : Refrescar\nCTRL-X : Salir")
        pile_content = carton_screen_pile
        pile_content.set_focus(carton_padded)
    elif screen_name=='SELECT_SUBSTITUTE':
        current_screen='SELECT_SUBSTITUTE'
        hint_text.set_text("CTRL-R : Refrescar\nCTRL-X : Salir")
        pile_content = substitute_screen_pile
    elif screen_name=='CARTON_ERROR':
        current_screen='CARTON_ERROR'
        hint_text.set_text("CTRL-A : Aceptar")
        pile_content = carton_error_pile

    root_filler_mapped = urwid.AttrMap(urwid.Filler(pile_content, 'top'), 'background')
    loop.widget = root_filler_mapped

def unhandled_input(key):
    global valid_message_visible, current_screen
    if current_screen=='CARTON_ERROR':
        if key =="ctrl a":
            carton_error.set_text('')
            change_screen('CARTON')
        else:
            return

    if key == "ctrl x":
        exit_command()
        return

    if key == "ctrl r":
        refresh_form()
        return

    if key == "ctrl a":
        if valid_message_visible:
            hide_valid_message()
        return

    return

class EditUser(urwid.Edit):

    def validate(self, maintain_screen_state=False):
        global login_user_id
        self.set_edit_text(self.get_edit_text().upper())
        temp_login_user_id = self.get_edit_text()

        if not maintain_screen_state:
            change_screen('CARTON')

        return True


    def keypress(self, size, key):
        self.set_edit_text(self.get_edit_text().upper())
        user_error.set_text('')
        if key in ("tab", "enter"):
            self.validate()
            return

        ret = urwid.Edit.keypress(self, size, key)

        return ret

class EditCarton(urwid.Edit):

    def validate(self, maintain_screen_state=False):
        global g_radio_button_group, locn_list_options
        self.set_edit_text(self.get_edit_text().upper())
        carton_nbr = self.get_edit_text()
        g_radio_button_group=[]
        for i in range(1,5):
            b = urwid.RadioButton(g_radio_button_group, '%d'%(i), False, on_state_change=on_mode_button)
        locn_list_options = urwid.GridFlow(g_radio_button_group, 15, 3, 1, 'left')
        change_screen('SELECT_SUBSTITUTE')
        return True

    def keypress(self, size, key):
        self.set_edit_text(self.get_edit_text().upper())
        carton_error.set_text('')
        if key in ("tab", "enter"):
            self.validate()
            return
        ret = urwid.Edit.keypress(self, size, key)
        return ret

palette = [("background", "", ""),("header", "dark green", ""),('editfield','black, underline', 'light gray','underline'),("error", "dark red", ""),("success", "dark green", ""),("hint", "brown", ""),("info", "white", ""),]

header = urwid.Text("\nRadio Button Sample\n")
header_mapped = urwid.AttrWrap(header, 'header')

blank_label = urwid.Text("")
blank_label_mapped = urwid.AttrMap(blank_label, "info")

user_input = EditUser(("background", "Usuario: "))
user_mapped = urwid.AttrWrap(user_input, 'editfield')
user_padded = urwid.Padding(user_mapped, width=len("Usuario: ") + 20)
user_error = urwid.Text("")
user_error_mapped = urwid.AttrMap(user_error, "error")

r_button = urwid.RadioButton(g_radio_button_group, 'Hi', False, on_state_change=on_mode_button)
locn_list_options = urwid.GridFlow(g_radio_button_group, 15, 3, 1, 'left')
carton_input = EditCarton(("background", "CTN : "))
carton_mapped = urwid.AttrWrap(carton_input, 'editfield')
carton_padded = urwid.Padding(carton_mapped, width=len("CTN : ") + 20)
carton_error = urwid.Text("")
carton_error_mapped = urwid.AttrMap(carton_error, "error")
carton_label = urwid.Text("")
carton_label_mapped = urwid.AttrMap(carton_label, "info")

hint_text = urwid.Text("CTRL-R : Refrescar\nCTRL-X : Salir")
hint_text_mapped = urwid.AttrWrap(hint_text, 'hint')

user_screen_pile = urwid.Pile([header_mapped, user_padded, blank_label_mapped, user_error_mapped, blank_label_mapped, hint_text_mapped])
carton_screen_pile = urwid.Pile([header_mapped, carton_padded, blank_label_mapped, carton_error_mapped, blank_label_mapped, hint_text_mapped])
substitute_screen_pile = urwid.Pile([header_mapped, carton_label_mapped, blank_label_mapped, locn_list_options , hint_text_mapped])


pile_content = user_screen_pile
root_filler_mapped = urwid.AttrMap(urwid.Filler(pile_content, 'top'), 'background')
screen = urwid.curses_display.Screen()
loop = urwid.MainLoop(root_filler_mapped, palette,screen, unhandled_input=unhandled_input)


try:
    old = screen.tty_signal_keys('undefined', 'undefined', 'undefined', 'undefined', 'undefined')
    loop.run()
except Exception,e:
    raise
finally:
    screen.tty_signal_keys(*old)