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