#
# Copyright (C) 2015 vmware inc.
#
# Author: Yang Yao <yaoyang@vmware.com>
import curses
import sys
from actionresult import ActionResult
from action import Action
from window import Window
from confirmwindow import ConfirmWindow
class ReadMulText(Action):
def __init__(self, maxy, maxx, y, install_config, field,
display_string, confirmation_error_msg,
echo_char, accepted_chars, validation_fn, conversion_fn,
can_cancel, default_string=None):
self.maxy = maxy
self.maxx = maxx
self.y = y
self.install_config = install_config
self.field = field
self.horizontal_padding = 10
self.confirmation_error_msg = confirmation_error_msg
self.echo_char = echo_char
self.accepted_chars = accepted_chars
self.validation_fn = validation_fn
self.conversion_fn = conversion_fn
self.default_string = default_string
self.display_string = display_string
self.textwin_width = maxx - self.horizontal_padding -2
self.textwin_width = self.textwin_width* 2 // 3
self.visible_text_width = self.textwin_width - 1
self.position = 0
self.height = len(self.display_string) * 4 + 2
self.menu_pos = 0
#self.textwin_width)
self.textwin = curses.newwin(self.height, self.textwin_width + 2)
self.textwin.bkgd(' ', curses.color_pair(2))
self.textwin.keypad(1)
self.shadowwin = curses.newwin(self.height, self.textwin_width + 2)
self.shadowwin.bkgd(' ', curses.color_pair(0)) #Default shadow color
self.panel = curses.panel.new_panel(self.textwin)
self.panel.move((maxy-self.height) // 2, (maxx - self.textwin_width) // 2 -1)
self.panel.hide()
self.shadowpanel = curses.panel.new_panel(self.shadowwin)
self.shadowpanel.move((maxy-self.height) // 2 + 1, (maxx - self.textwin_width) // 2)
self.shadowpanel.hide()
curses.panel.update_panels()
self.init_text()
self.textwin.box()
self.maxlength = 255
#initialize the accepted characters
if accepted_chars:
self.accepted_chars = accepted_chars
else:
self.accepted_chars = range(32, 127)
def hide(self):
return
def init_text(self):
self.shadowpanel.show()
curses.panel.update_panels()
self.x = 0
#initialize the ----
dashes = '_' * self.textwin_width
cury = self.y + 1
self.str = []
for string in self.display_string:
self.textwin.addstr(cury, 1, string)
self.textwin.addstr(cury + 1, 1, dashes)
cury = cury + 4
self.str.append('')
#remove the error messages
spaces = ' ' * self.textwin_width
#self.textwin.addstr(self.y + 2, 0, spaces)
self.update_menu()
def do_action(self):
self.init_text()
curses.curs_set(1)
if self.default_string != None:
self.textwin.addstr(self.y, 0, self.default_string)
self.str = self.default_string
while True:
if len(self.str[self.position]) > self.visible_text_width:
curs_loc = self.visible_text_width + 1
else:
curs_loc = len(self.str[self.position]) +1
ch = self.textwin.getch(self.y + 2 + self.position * 4, curs_loc)
update_text = False
if ch in [curses.KEY_ENTER, ord('\n')]:
if self.menu_pos == 1:
curses.curs_set(0)
self.shadowpanel.hide()
return ActionResult(False, None)
if self.confirmation_error_msg:
if self.str != self.install_config[self.field]:
curses.curs_set(0)
conf_message_height = 8
conf_message_width = 48
conf_message_button_y = (self.maxy - conf_message_height) // 2 + 5
confrim_window = ConfirmWindow(conf_message_height, conf_message_width,
self.maxy, self.maxx, conf_message_button_y,
self.confirmation_error_msg, True)
confrim_window.do_action()
return ActionResult(False, {'goBack': True})
self.set_field()
else:
if not self.validate_input():
continue
self.set_field()
curses.curs_set(0)
self.shadowpanel.hide()
return ActionResult(True, None)
elif ch == curses.KEY_UP:
self.refresh(-1)
elif ch == curses.KEY_DOWN:
self.refresh(1)
elif ch in [ord('\t')]:
self.refresh(1, reset=True)
elif ch == curses.KEY_LEFT:
self.menu_refresh(1)
elif ch == curses.KEY_RIGHT:
self.menu_refresh(-1)
elif ch == curses.KEY_BACKSPACE:
# Handle the backspace case
self.str[self.position] = self.str[self.position][:len(self.str[self.position]) - 1]
update_text = True
elif len(self.str[self.position]) < self.maxlength and ch in self.accepted_chars:
self.str[self.position] += chr(ch)
update_text = True
if update_text:
self.update_text()
def menu_refresh(self, n):
self.menu_pos += n
if self.menu_pos < 0:
self.menu_pos = 0
elif self.menu_pos >= 1:
self.menu_pos = 1
self.update_menu()
def update_menu(self):
if self.menu_pos == 1:
self.textwin.addstr(self.height-2, 5, '<Cancel>', curses.color_pair(3))
else:
self.textwin.addstr(self.height-2, 5, '<Cancel>')
if self.menu_pos == 0:
self.textwin.addstr(self.height-2, self.textwin_width-len('<OK>')-5, '<OK>',
curses.color_pair(3))
else:
self.textwin.addstr(self.height-2, self.textwin_width-len('<OK>')-5,
'<OK>')
def update_text(self):
if len(self.str[self.position]) > self.visible_text_width:
text = self.str[self.position][-self.visible_text_width:]
else:
text = self.str[self.position]
if self.echo_char:
text = self.echo_char * len(text)
text = text + '_' * (self.visible_text_width - len(self.str[self.position]))
self.textwin.addstr(self.y + 2 + self.position * 4, 1, text)
def refresh(self, n, reset=False):
self.position += n
if self.position < 0:
self.position = 0
elif self.position >= len(self.display_string):
if reset:
self.position = 0
else:
self.position = len(self.display_string)-1
def set_field(self):
i = 0
for string in self.display_string:
if self.conversion_fn:
self.install_config[self.field+str(i)] = self.conversion_fn(self.str[i])
else:
self.install_config[self.field+str(i)] = self.str[i]
i = i + 1
def validate_input(self):
if self.validation_fn:
success, err = self.validation_fn(self.str)
if not success:
spaces = ' ' * (int(self.textwin_width) - len(self.display_string[0]))
self.textwin.addstr(self.y + 1, len(self.display_string[0]), spaces)
self.textwin.addstr(self.y + 1, len(self.display_string[0]), err,
curses.color_pair(4))
return success
else:
return True