text: from kivy.app import App
  from kivy.factory import Factory
  from kivy.properties import ObjectProperty
  from kivy.lang import Builder
  from decimal import Decimal
  from kivy.clock import Clock
  
  from electrum_axe.util import InvalidPassword
  from electrum_axe.gui.kivy.i18n import _
  
  Builder.load_string('''
  
  <PasswordDialog@Popup>
      id: popup
      title: 'AXE Electrum'
      message: ''
      BoxLayout:
          size_hint: 1, 1
          orientation: 'vertical'
          Widget:
              size_hint: 1, 0.05
          Label:
              font_size: '20dp'
              text: root.message
              text_size: self.width, None
              size: self.texture_size
          Widget:
              size_hint: 1, 0.05
          Label:
              id: a
              font_size: '50dp'
              text: '*'*len(kb.password) + '-'*(6-len(kb.password))
              size: self.texture_size
          Widget:
              size_hint: 1, 0.05
          GridLayout:
              id: kb
              size_hint: 1, None
              height: self.minimum_height
              update_amount: popup.update_password
              password: ''
              on_password: popup.on_password(self.password)
              spacing: '2dp'
              cols: 3
              KButton:
                  text: '1'
              KButton:
                  text: '2'
              KButton:
                  text: '3'
              KButton:
                  text: '4'
              KButton:
                  text: '5'
              KButton:
                  text: '6'
              KButton:
                  text: '7'
              KButton:
                  text: '8'
              KButton:
                  text: '9'
              KButton:
                  text: 'Clear'
              KButton:
                  text: '0'
              KButton:
                  text: '<'
  ''')
  
  
  class PasswordDialog(Factory.Popup):
  
      def init(self, app, wallet, message, on_success, on_failure, is_change=0):
          self.app = app
          self.wallet = wallet
          self.message = message
          self.on_success = on_success
          self.on_failure = on_failure
          self.ids.kb.password = ''
          self.success = False
          self.is_change = is_change
          self.pw = None
          self.new_password = None
          self.title = 'AXE Electrum' + ('  -  ' + self.wallet.basename() if self.wallet else '')
  
      def check_password(self, password):
          if self.is_change > 1:
              return True
          try:
              self.wallet.check_password(password)
              return True
          except InvalidPassword as e:
              return False
  
      def on_dismiss(self):
          if not self.success:
              if self.on_failure:
                  self.on_failure()
              else:
                  # keep dialog open
                  return True
          else:
              if self.on_success:
                  args = (self.pw, self.new_password) if self.is_change else (self.pw,)
                  Clock.schedule_once(lambda dt: self.on_success(*args), 0.1)
  
      def update_password(self, c):
          kb = self.ids.kb
          text = kb.password
          if c == '<':
              text = text[:-1]
          elif c == 'Clear':
              text = ''
          else:
              text += c
          kb.password = text
  
      def on_password(self, pw):
          if len(pw) == 6:
              if self.check_password(pw):
                  if self.is_change == 0:
                      self.success = True
                      self.pw = pw
                      self.message = _('Please wait...')
                      self.dismiss()
                  elif self.is_change == 1:
                      self.pw = pw
                      self.message = _('Enter new PIN')
                      self.ids.kb.password = ''
                      self.is_change = 2
                  elif self.is_change == 2:
                      self.new_password = pw
                      self.message = _('Confirm new PIN')
                      self.ids.kb.password = ''
                      self.is_change = 3
                  elif self.is_change == 3:
                      self.success = pw == self.new_password
                      self.dismiss()
              else:
                  self.app.show_error(_('Wrong PIN'))
                  self.ids.kb.password = ''
  