text: #!/usr/bin/env python
  #
  # Electrum - lightweight Bitcoin client
  # Copyright (C) 2015 Thomas Voegtlin
  #
  # Permission is hereby granted, free of charge, to any person
  # obtaining a copy of this software and associated documentation files
  # (the "Software"), to deal in the Software without restriction,
  # including without limitation the rights to use, copy, modify, merge,
  # publish, distribute, sublicense, and/or sell copies of the Software,
  # and to permit persons to whom the Software is furnished to do so,
  # subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be
  # included in all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  
  from util import *
  from electrum_zaap.i18n import _
  from electrum_zaap.bitcoin import is_address
  
  
  class UTXOList(MyTreeWidget):
      filter_columns = [0, 2]  # Address, Label
  
      def __init__(self, parent=None):
          MyTreeWidget.__init__(self, parent, self.create_menu, [ _('Address'), _('Label'), _('Amount'), _('Height'), _('Output point')], 1)
          self.setSelectionMode(QAbstractItemView.ExtendedSelection)
  
      def get_name(self, x):
          return x.get('prevout_hash') + ":%d"%x.get('prevout_n')
  
      def on_update(self):
          self.wallet = self.parent.wallet
          item = self.currentItem()
          self.clear()
          self.utxos = self.wallet.get_utxos()
          for x in self.utxos:
              address = x.get('address')
              height = x.get('height')
              name = self.get_name(x)
              label = self.wallet.get_label(x.get('prevout_hash'))
              amount = self.parent.format_amount(x['value'])
              utxo_item = QTreeWidgetItem([address, label, amount, '%d'%height, name[0:10] + '...' + name[-2:]])
              utxo_item.setFont(0, QFont(MONOSPACE_FONT))
              utxo_item.setFont(4, QFont(MONOSPACE_FONT))
              utxo_item.setData(0, Qt.UserRole, name)
              if self.wallet.is_frozen(address):
                  utxo_item.setBackgroundColor(0, QColor('lightblue'))
              self.addChild(utxo_item)
  
      def create_menu(self, position):
          selected = [str(x.data(0, Qt.UserRole).toString()) for x in self.selectedItems()]
          if not selected:
              return
          menu = QMenu()
          coins = filter(lambda x: self.get_name(x) in selected, self.utxos)
  
          menu.addAction(_("Spend"), lambda: self.parent.spend_coins(coins))
          if len(selected) == 1:
              txid = selected[0].split(':')[0]
              tx = self.wallet.transactions.get(txid)
              menu.addAction(_("Details"), lambda: self.parent.show_transaction(tx))
  
          menu.exec_(self.viewport().mapToGlobal(position))
  