Esempio n. 1
0
 def _start_wizard_to_select_or_create_wallet(self, path) -> Optional[Abstract_Wallet]:
     wizard = InstallWizard(self.config, self.app, self.plugins)
     try:
         path, storage = wizard.select_storage(path, self.daemon.get_wallet)
         # storage is None if file does not exist
         if storage is None:
             wizard.path = path  # needed by trustedcoin plugin
             wizard.run('new')
             storage = wizard.create_storage(path)
         else:
             wizard.run_upgrades(storage)
     except (UserCancelled, GoBack):
         return
     except WalletAlreadyOpenInMemory as e:
         return e.wallet
     except (WalletFileException, BitcoinException) as e:
         traceback.print_exc(file=sys.stderr)
         QMessageBox.warning(None, _('Error'),
                             _('Cannot load wallet') + ' (2):\n' + str(e))
         return
     finally:
         wizard.terminate()
     # return if wallet creation is not complete
     if storage is None or storage.get_action():
         return
     wallet = Wallet(storage)
     wallet.start_network(self.daemon.network)
     self.daemon.add_wallet(wallet)
     return wallet
Esempio n. 2
0
    def __init__(self, config, daemon, plugins):

        self.config = config
        self.network = daemon.network
        storage = WalletStorage(config.get_wallet_path())
        if not storage.file_exists():
            print("Wallet not found. try 'electrum-nmc create'")
            exit()
        if storage.is_encrypted():
            password = getpass.getpass('Password:'******'')
        self.encoding = locale.getpreferredencoding()

        self.stdscr = curses.initscr()
        curses.noecho()
        curses.cbreak()
        curses.start_color()
        curses.use_default_colors()
        curses.init_pair(1, curses.COLOR_WHITE, curses.COLOR_BLUE)
        curses.init_pair(2, curses.COLOR_WHITE, curses.COLOR_CYAN)
        curses.init_pair(3, curses.COLOR_BLACK, curses.COLOR_WHITE)
        self.stdscr.keypad(1)
        self.stdscr.border(0)
        self.maxy, self.maxx = self.stdscr.getmaxyx()
        self.set_cursor(0)
        self.w = curses.newwin(10, 50, 5, 5)

        set_verbosity(False)
        self.tab = 0
        self.pos = 0
        self.popup_pos = 0

        self.str_recipient = ""
        self.str_description = ""
        self.str_amount = ""
        self.str_fee = ""
        self.history = None

        if self.network:
            self.network.register_callback(
                self.update, ['wallet_updated', 'network_updated'])

        self.tab_names = [
            _("History"),
            _("Send"),
            _("Receive"),
            _("Addresses"),
            _("Contacts"),
            _("Banner")
        ]
        self.num_tabs = len(self.tab_names)
Esempio n. 3
0
 def on_wizard_complete(self, wizard, storage):
     if storage:
         wallet = Wallet(storage)
         wallet.start_network(self.daemon.network)
         self.daemon.add_wallet(wallet)
         self.load_wallet(wallet)
     elif not self.wallet:
         # wizard did not return a wallet; and there is no wallet open atm
         # try to open last saved wallet (potentially start wizard again)
         self.load_wallet_by_name(self.electrum_config.get_wallet_path(), ask_if_wizard=True)
Esempio n. 4
0
class ElectrumGui:
    def __init__(self, config, daemon, plugins):

        self.config = config
        self.network = daemon.network
        storage = WalletStorage(config.get_wallet_path())
        if not storage.file_exists():
            print("Wallet not found. try 'electrum-nmc create'")
            exit()
        if storage.is_encrypted():
            password = getpass.getpass('Password:'******'')
        self.encoding = locale.getpreferredencoding()

        self.stdscr = curses.initscr()
        curses.noecho()
        curses.cbreak()
        curses.start_color()
        curses.use_default_colors()
        curses.init_pair(1, curses.COLOR_WHITE, curses.COLOR_BLUE)
        curses.init_pair(2, curses.COLOR_WHITE, curses.COLOR_CYAN)
        curses.init_pair(3, curses.COLOR_BLACK, curses.COLOR_WHITE)
        self.stdscr.keypad(1)
        self.stdscr.border(0)
        self.maxy, self.maxx = self.stdscr.getmaxyx()
        self.set_cursor(0)
        self.w = curses.newwin(10, 50, 5, 5)

        set_verbosity(False)
        self.tab = 0
        self.pos = 0
        self.popup_pos = 0

        self.str_recipient = ""
        self.str_description = ""
        self.str_amount = ""
        self.str_fee = ""
        self.history = None

        if self.network:
            self.network.register_callback(
                self.update, ['wallet_updated', 'network_updated'])

        self.tab_names = [
            _("History"),
            _("Send"),
            _("Receive"),
            _("Addresses"),
            _("Contacts"),
            _("Banner")
        ]
        self.num_tabs = len(self.tab_names)

    def set_cursor(self, x):
        try:
            curses.curs_set(x)
        except Exception:
            pass

    def restore_or_create(self):
        pass

    def verify_seed(self):
        pass

    def get_string(self, y, x):
        self.set_cursor(1)
        curses.echo()
        self.stdscr.addstr(y, x, " " * 20, curses.A_REVERSE)
        s = self.stdscr.getstr(y, x)
        curses.noecho()
        self.set_cursor(0)
        return s

    def update(self, event):
        self.update_history()
        if self.tab == 0:
            self.print_history()
        self.refresh()

    def print_history(self):

        width = [20, 40, 14, 14]
        delta = (self.maxx - sum(width) - 4) / 3
        format_str = "%" + "%d" % width[0] + "s" + "%" + "%d" % (
            width[1] + delta) + "s" + "%" + "%d" % (
                width[2] + delta) + "s" + "%" + "%d" % (width[3] + delta) + "s"

        if self.history is None:
            self.update_history()

        self.print_list(
            self.history[::-1], format_str %
            (_("Date"), _("Description"), _("Amount"), _("Balance")))

    def update_history(self):
        width = [20, 40, 14, 14]
        delta = (self.maxx - sum(width) - 4) / 3
        format_str = "%" + "%d" % width[0] + "s" + "%" + "%d" % (
            width[1] + delta) + "s" + "%" + "%d" % (
                width[2] + delta) + "s" + "%" + "%d" % (width[3] + delta) + "s"

        b = 0
        self.history = []
        for tx_hash, tx_mined_status, value, balance in self.wallet.get_history(
        ):
            if tx_mined_status.conf:
                timestamp = tx_mined_status.timestamp
                try:
                    time_str = datetime.datetime.fromtimestamp(
                        timestamp).isoformat(' ')[:-3]
                except Exception:
                    time_str = "------"
            else:
                time_str = 'unconfirmed'

            label = self.wallet.get_label(tx_hash)
            if len(label) > 40:
                label = label[0:37] + '...'
            self.history.append(
                format_str %
                (time_str, label, format_satoshis(value, whitespaces=True),
                 format_satoshis(balance, whitespaces=True)))

    def print_balance(self):
        if not self.network:
            msg = _("Offline")
        elif self.network.is_connected():
            if not self.wallet.up_to_date:
                msg = _("Synchronizing...")
            else:
                c, u, x = self.wallet.get_balance()
                msg = _("Balance") + ": %f  " % (Decimal(c) / COIN)
                if u:
                    msg += "  [%f unconfirmed]" % (Decimal(u) / COIN)
                if x:
                    msg += "  [%f unmatured]" % (Decimal(x) / COIN)
        else:
            msg = _("Not connected")

        self.stdscr.addstr(self.maxy - 1, 3, msg)

        for i in range(self.num_tabs):
            self.stdscr.addstr(0,
                               2 + 2 * i + len(''.join(self.tab_names[0:i])),
                               ' ' + self.tab_names[i] + ' ',
                               curses.A_BOLD if self.tab == i else 0)

        self.stdscr.addstr(self.maxy - 1, self.maxx - 30,
                           ' '.join([_("Settings"),
                                     _("Network"),
                                     _("Quit")]))

    def print_receive(self):
        addr = self.wallet.get_receiving_address()
        self.stdscr.addstr(2, 1, "Address: " + addr)
        self.print_qr(addr)

    def print_contacts(self):
        messages = map(lambda x: "%20s   %45s " % (x[0], x[1][1]),
                       self.contacts.items())
        self.print_list(messages, "%19s  %15s " % ("Key", "Value"))

    def print_addresses(self):
        fmt = "%-35s  %-30s"
        messages = map(
            lambda addr: fmt % (addr, self.wallet.labels.get(addr, "")),
            self.wallet.get_addresses())
        self.print_list(messages, fmt % ("Address", "Label"))

    def print_edit_line(self, y, label, text, index, size):
        text += " " * (size - len(text))
        self.stdscr.addstr(y, 2, label)
        self.stdscr.addstr(
            y, 15, text, curses.A_REVERSE if self.pos %
            6 == index else curses.color_pair(1))

    def print_send_tab(self):
        self.stdscr.clear()
        self.print_edit_line(3, _("Pay to"), self.str_recipient, 0, 40)
        self.print_edit_line(5, _("Description"), self.str_description, 1, 40)
        self.print_edit_line(7, _("Amount"), self.str_amount, 2, 15)
        self.print_edit_line(9, _("Fee"), self.str_fee, 3, 15)
        self.stdscr.addstr(
            12, 15, _("[Send]"),
            curses.A_REVERSE if self.pos % 6 == 4 else curses.color_pair(2))
        self.stdscr.addstr(
            12, 25, _("[Clear]"),
            curses.A_REVERSE if self.pos % 6 == 5 else curses.color_pair(2))
        self.maxpos = 6

    def print_banner(self):
        if self.network and self.network.banner:
            banner = self.network.banner
            banner = banner.replace('\r', '')
            self.print_list(banner.split('\n'))

    def print_qr(self, data):
        import qrcode
        try:
            from StringIO import StringIO
        except ImportError:
            from io import StringIO

        s = StringIO()
        self.qr = qrcode.QRCode()
        self.qr.add_data(data)
        self.qr.print_ascii(out=s, invert=False)
        msg = s.getvalue()
        lines = msg.split('\n')
        try:
            for i, l in enumerate(lines):
                l = l.encode("utf-8")
                self.stdscr.addstr(i + 5, 5, l, curses.color_pair(3))
        except curses.error:
            m = 'error. screen too small?'
            m = m.encode(self.encoding)
            self.stdscr.addstr(5, 1, m, 0)

    def print_list(self, lst, firstline=None):
        lst = list(lst)
        self.maxpos = len(lst)
        if not self.maxpos: return
        if firstline:
            firstline += " " * (self.maxx - 2 - len(firstline))
            self.stdscr.addstr(1, 1, firstline)
        for i in range(self.maxy - 4):
            msg = lst[i] if i < len(lst) else ""
            msg += " " * (self.maxx - 2 - len(msg))
            m = msg[0:self.maxx - 2]
            m = m.encode(self.encoding)
            self.stdscr.addstr(
                i + 2, 1, m,
                curses.A_REVERSE if i == (self.pos % self.maxpos) else 0)

    def refresh(self):
        if self.tab == -1: return
        self.stdscr.border(0)
        self.print_balance()
        self.stdscr.refresh()

    def main_command(self):
        c = self.stdscr.getch()
        print(c)
        cc = curses.unctrl(c).decode()
        if c == curses.KEY_RIGHT: self.tab = (self.tab + 1) % self.num_tabs
        elif c == curses.KEY_LEFT: self.tab = (self.tab - 1) % self.num_tabs
        elif c == curses.KEY_DOWN: self.pos += 1
        elif c == curses.KEY_UP: self.pos -= 1
        elif c == 9: self.pos += 1  # tab
        elif cc in ['^W', '^C', '^X', '^Q']: self.tab = -1
        elif cc in ['^N']: self.network_dialog()
        elif cc == '^S': self.settings_dialog()
        else: return c
        if self.pos < 0: self.pos = 0
        if self.pos >= self.maxpos: self.pos = self.maxpos - 1

    def run_tab(self, i, print_func, exec_func):
        while self.tab == i:
            self.stdscr.clear()
            print_func()
            self.refresh()
            c = self.main_command()
            if c: exec_func(c)

    def run_history_tab(self, c):
        if c == 10:
            out = self.run_popup('', ["blah", "foo"])

    def edit_str(self, target, c, is_num=False):
        # detect backspace
        cc = curses.unctrl(c).decode()
        if c in [8, 127, 263] and target:
            target = target[:-1]
        elif not is_num or cc in '0123456789.':
            target += cc
        return target

    def run_send_tab(self, c):
        if self.pos % 6 == 0:
            self.str_recipient = self.edit_str(self.str_recipient, c)
        if self.pos % 6 == 1:
            self.str_description = self.edit_str(self.str_description, c)
        if self.pos % 6 == 2:
            self.str_amount = self.edit_str(self.str_amount, c, True)
        elif self.pos % 6 == 3:
            self.str_fee = self.edit_str(self.str_fee, c, True)
        elif self.pos % 6 == 4:
            if c == 10: self.do_send()
        elif self.pos % 6 == 5:
            if c == 10: self.do_clear()

    def run_receive_tab(self, c):
        if c == 10:
            out = self.run_popup('Address',
                                 ["Edit label", "Freeze", "Prioritize"])

    def run_contacts_tab(self, c):
        if c == 10 and self.contacts:
            out = self.run_popup(
                'Address',
                ["Copy", "Pay to", "Edit label", "Delete"]).get('button')
            key = list(self.contacts.keys())[self.pos %
                                             len(self.contacts.keys())]
            if out == "Pay to":
                self.tab = 1
                self.str_recipient = key
                self.pos = 2
            elif out == "Edit label":
                s = self.get_string(6 + self.pos, 18)
                if s:
                    self.wallet.labels[key] = s

    def run_banner_tab(self, c):
        self.show_message(repr(c))
        pass

    def main(self):

        tty.setraw(sys.stdin)
        try:
            while self.tab != -1:
                self.run_tab(0, self.print_history, self.run_history_tab)
                self.run_tab(1, self.print_send_tab, self.run_send_tab)
                self.run_tab(2, self.print_receive, self.run_receive_tab)
                self.run_tab(3, self.print_addresses, self.run_banner_tab)
                self.run_tab(4, self.print_contacts, self.run_contacts_tab)
                self.run_tab(5, self.print_banner, self.run_banner_tab)
        except curses.error as e:
            raise Exception(
                "Error with curses. Is your screen too small?") from e
        finally:
            tty.setcbreak(sys.stdin)
            curses.nocbreak()
            self.stdscr.keypad(0)
            curses.echo()
            curses.endwin()

    def do_clear(self):
        self.str_amount = ''
        self.str_recipient = ''
        self.str_fee = ''
        self.str_description = ''

    def do_send(self):
        if not is_address(self.str_recipient):
            self.show_message(_('Invalid Namecoin address'))
            return
        try:
            amount = int(Decimal(self.str_amount) * COIN)
        except Exception:
            self.show_message(_('Invalid Amount'))
            return
        try:
            fee = int(Decimal(self.str_fee) * COIN)
        except Exception:
            self.show_message(_('Invalid Fee'))
            return

        if self.wallet.has_password():
            password = self.password_dialog()
            if not password:
                return
        else:
            password = None
        try:
            tx = self.wallet.mktx(
                [TxOutput(TYPE_ADDRESS, self.str_recipient, amount)], password,
                self.config, fee)
        except Exception as e:
            self.show_message(str(e))
            return

        if self.str_description:
            self.wallet.labels[tx.txid()] = self.str_description

        self.show_message(_("Please wait..."), getchar=False)
        status, msg = self.network.run_from_another_thread(
            self.network.broadcast_transaction(tx))

        if status:
            self.show_message(_('Payment sent.'))
            self.do_clear()
            #self.update_contacts_tab()
        else:
            self.show_message(_('Error'))

    def show_message(self, message, getchar=True):
        w = self.w
        w.clear()
        w.border(0)
        for i, line in enumerate(message.split('\n')):
            w.addstr(2 + i, 2, line)
        w.refresh()
        if getchar: c = self.stdscr.getch()

    def run_popup(self, title, items):
        return self.run_dialog(
            title,
            list(map(lambda x: {
                'type': 'button',
                'label': x
            }, items)),
            interval=1,
            y_pos=self.pos + 3)

    def network_dialog(self):
        if not self.network:
            return
        net_params = self.network.get_parameters()
        host, port, protocol = net_params.host, net_params.port, net_params.protocol
        proxy_config, auto_connect = net_params.proxy, net_params.auto_connect
        srv = 'auto-connect' if auto_connect else self.network.default_server
        out = self.run_dialog('Network', [
            {
                'label': 'server',
                'type': 'str',
                'value': srv
            },
            {
                'label': 'proxy',
                'type': 'str',
                'value': self.config.get('proxy', '')
            },
        ],
                              buttons=1)
        if out:
            if out.get('server'):
                server = out.get('server')
                auto_connect = server == 'auto-connect'
                if not auto_connect:
                    try:
                        host, port, protocol = deserialize_server(server)
                    except Exception:
                        self.show_message("Error:" + server +
                                          "\nIn doubt, type \"auto-connect\"")
                        return False
            if out.get('server') or out.get('proxy'):
                proxy = electrum.network.deserialize_proxy(
                    out.get('proxy')) if out.get('proxy') else proxy_config
                net_params = NetworkParameters(host, port, protocol, proxy,
                                               auto_connect)
                self.network.run_from_another_thread(
                    self.network.set_parameters(net_params))

    def settings_dialog(self):
        fee = str(Decimal(self.config.fee_per_kb()) / COIN)
        out = self.run_dialog('Settings', [{
            'label': 'Default fee',
            'type': 'satoshis',
            'value': fee
        }],
                              buttons=1)
        if out:
            if out.get('Default fee'):
                fee = int(Decimal(out['Default fee']) * COIN)
                self.config.set_key('fee_per_kb', fee, True)

    def password_dialog(self):
        out = self.run_dialog('Password', [{
            'label': 'Password',
            'type': 'password',
            'value': ''
        }],
                              buttons=1)
        return out.get('Password')

    def run_dialog(self, title, items, interval=2, buttons=None, y_pos=3):
        self.popup_pos = 0

        self.w = curses.newwin(
            5 + len(list(items)) * interval + (2 if buttons else 0), 50, y_pos,
            5)
        w = self.w
        out = {}
        while True:
            w.clear()
            w.border(0)
            w.addstr(0, 2, title)

            num = len(list(items))

            numpos = num
            if buttons: numpos += 2

            for i in range(num):
                item = items[i]
                label = item.get('label')
                if item.get('type') == 'list':
                    value = item.get('value', '')
                elif item.get('type') == 'satoshis':
                    value = item.get('value', '')
                elif item.get('type') == 'str':
                    value = item.get('value', '')
                elif item.get('type') == 'password':
                    value = '*' * len(item.get('value', ''))
                else:
                    value = ''
                if value is None:
                    value = ''
                if len(value) < 20:
                    value += ' ' * (20 - len(value))

                if 'value' in item:
                    w.addstr(2 + interval * i, 2, label)
                    w.addstr(
                        2 + interval * i, 15, value,
                        curses.A_REVERSE if self.popup_pos %
                        numpos == i else curses.color_pair(1))
                else:
                    w.addstr(
                        2 + interval * i, 2, label,
                        curses.A_REVERSE if self.popup_pos %
                        numpos == i else 0)

            if buttons:
                w.addstr(
                    5 + interval * i, 10, "[  ok  ]",
                    curses.A_REVERSE if self.popup_pos %
                    numpos == (numpos - 2) else curses.color_pair(2))
                w.addstr(
                    5 + interval * i, 25, "[cancel]",
                    curses.A_REVERSE if self.popup_pos %
                    numpos == (numpos - 1) else curses.color_pair(2))

            w.refresh()

            c = self.stdscr.getch()
            if c in [ord('q'), 27]: break
            elif c in [curses.KEY_LEFT, curses.KEY_UP]: self.popup_pos -= 1
            elif c in [curses.KEY_RIGHT, curses.KEY_DOWN]: self.popup_pos += 1
            else:
                i = self.popup_pos % numpos
                if buttons and c == 10:
                    if i == numpos - 2:
                        return out
                    elif i == numpos - 1:
                        return {}

                item = items[i]
                _type = item.get('type')

                if _type == 'str':
                    item['value'] = self.edit_str(item['value'], c)
                    out[item.get('label')] = item.get('value')

                elif _type == 'password':
                    item['value'] = self.edit_str(item['value'], c)
                    out[item.get('label')] = item['value']

                elif _type == 'satoshis':
                    item['value'] = self.edit_str(item['value'], c, True)
                    out[item.get('label')] = item.get('value')

                elif _type == 'list':
                    choices = item.get('choices')
                    try:
                        j = choices.index(item.get('value'))
                    except Exception:
                        j = 0
                    new_choice = choices[(j + 1) % len(choices)]
                    item['value'] = new_choice
                    out[item.get('label')] = item.get('value')

                elif _type == 'button':
                    out['button'] = item.get('label')
                    break

        return out
Esempio n. 5
0
config = SimpleConfig({"testnet":
                       True})  # to use ~/.electrum-nmc/testnet as datadir
constants.set_testnet()  # to set testnet magic bytes
daemon = Daemon(config, listen_jsonrpc=False)
network = daemon.network
assert network.asyncio_loop.is_running()

# get wallet on disk
wallet_dir = os.path.dirname(config.get_wallet_path())
wallet_path = os.path.join(wallet_dir, "test_wallet")
if not os.path.exists(wallet_path):
    create_new_wallet(path=wallet_path, segwit=True)

# open wallet
storage = WalletStorage(wallet_path)
wallet = Wallet(storage)
wallet.start_network(network)

# you can use ~CLI commands by accessing command_runner
command_runner = Commands(config, wallet=None, network=network)
command_runner.wallet = wallet
print("balance", command_runner.getbalance())
print("addr", command_runner.getunusedaddress())
print(
    "gettx",
    command_runner.gettransaction(
        "bd3a700b2822e10a034d110c11a596ee7481732533eb6aca7f9ca02911c70a4f"))

# but you might as well interact with the underlying methods directly
print("balance", wallet.get_balance())
print("addr", wallet.get_unused_address())
Esempio n. 6
0
    def run_and_get_wallet(self, get_wallet_from_daemon):

        vbox = QVBoxLayout()
        hbox = QHBoxLayout()
        hbox.addWidget(QLabel(_('Wallet') + ':'))
        self.name_e = QLineEdit()
        hbox.addWidget(self.name_e)
        button = QPushButton(_('Choose...'))
        hbox.addWidget(button)
        vbox.addLayout(hbox)

        self.msg_label = QLabel('')
        vbox.addWidget(self.msg_label)
        hbox2 = QHBoxLayout()
        self.pw_e = QLineEdit('', self)
        self.pw_e.setFixedWidth(150)
        self.pw_e.setEchoMode(2)
        self.pw_label = QLabel(_('Password') + ':')
        hbox2.addWidget(self.pw_label)
        hbox2.addWidget(self.pw_e)
        hbox2.addStretch()
        vbox.addLayout(hbox2)
        self.set_layout(vbox, title=_('Electrum-NMC wallet'))

        wallet_folder = os.path.dirname(self.storage.path)

        def on_choose():
            path, __ = QFileDialog.getOpenFileName(self,
                                                   "Select your wallet file",
                                                   wallet_folder)
            if path:
                self.name_e.setText(path)

        def on_filename(filename):
            path = os.path.join(wallet_folder, filename)
            wallet_from_memory = get_wallet_from_daemon(path)
            try:
                if wallet_from_memory:
                    self.storage = wallet_from_memory.storage
                else:
                    self.storage = WalletStorage(path, manual_upgrades=True)
                self.next_button.setEnabled(True)
            except BaseException:
                traceback.print_exc(file=sys.stderr)
                self.storage = None
                self.next_button.setEnabled(False)
            if self.storage:
                if not self.storage.file_exists():
                    msg =_("This file does not exist.") + '\n' \
                          + _("Press 'Next' to create this wallet, or choose another file.")
                    pw = False
                elif not wallet_from_memory:
                    if self.storage.is_encrypted_with_user_pw():
                        msg = _("This file is encrypted with a password.") + '\n' \
                              + _('Enter your password or choose another file.')
                        pw = True
                    elif self.storage.is_encrypted_with_hw_device():
                        msg = _("This file is encrypted using a hardware device.") + '\n' \
                              + _("Press 'Next' to choose device to decrypt.")
                        pw = False
                    else:
                        msg = _("Press 'Next' to open this wallet.")
                        pw = False
                else:
                    msg = _("This file is already open in memory.") + "\n" \
                        + _("Press 'Next' to create/focus window.")
                    pw = False
            else:
                msg = _('Cannot read file')
                pw = False
            self.msg_label.setText(msg)
            if pw:
                self.pw_label.show()
                self.pw_e.show()
                self.pw_e.setFocus()
            else:
                self.pw_label.hide()
                self.pw_e.hide()

        button.clicked.connect(on_choose)
        self.name_e.textChanged.connect(on_filename)
        n = os.path.basename(self.storage.path)
        self.name_e.setText(n)

        while True:
            if self.loop.exec_() != 2:  # 2 = next
                return
            if self.storage.file_exists() and not self.storage.is_encrypted():
                break
            if not self.storage.file_exists():
                break
            wallet_from_memory = get_wallet_from_daemon(self.storage.path)
            if wallet_from_memory:
                return wallet_from_memory
            if self.storage.file_exists() and self.storage.is_encrypted():
                if self.storage.is_encrypted_with_user_pw():
                    password = self.pw_e.text()
                    try:
                        self.storage.decrypt(password)
                        break
                    except InvalidPassword as e:
                        QMessageBox.information(None, _('Error'), str(e))
                        continue
                    except BaseException as e:
                        traceback.print_exc(file=sys.stdout)
                        QMessageBox.information(None, _('Error'), str(e))
                        return
                elif self.storage.is_encrypted_with_hw_device():
                    try:
                        self.run('choose_hw_device', HWD_SETUP_DECRYPT_WALLET)
                    except InvalidPassword as e:
                        QMessageBox.information(
                            None, _('Error'),
                            _('Failed to decrypt using this hardware device.')
                            + '\n' +
                            _('If you use a passphrase, make sure it is correct.'
                              ))
                        self.stack = []
                        return self.run_and_get_wallet(get_wallet_from_daemon)
                    except BaseException as e:
                        traceback.print_exc(file=sys.stdout)
                        QMessageBox.information(None, _('Error'), str(e))
                        return
                    if self.storage.is_past_initial_decryption():
                        break
                    else:
                        return
                else:
                    raise Exception('Unexpected encryption version')

        path = self.storage.path
        if self.storage.requires_split():
            self.hide()
            msg = _(
                "The wallet '{}' contains multiple accounts, which are no longer supported since Electrum-NMC 2.7.\n\n"
                "Do you want to split your wallet into multiple files?"
            ).format(path)
            if not self.question(msg):
                return
            file_list = '\n'.join(self.storage.split_accounts())
            msg = _('Your accounts have been moved to'
                    ) + ':\n' + file_list + '\n\n' + _(
                        'Do you want to delete the old file') + ':\n' + path
            if self.question(msg):
                os.remove(path)
                self.show_warning(_('The file was removed'))
            return

        action = self.storage.get_action()
        if action and action not in ('new', 'upgrade_storage'):
            self.hide()
            msg = _("The file '{}' contains an incompletely created wallet.\n"
                    "Do you want to complete its creation now?").format(path)
            if not self.question(msg):
                if self.question(
                        _("Do you want to delete '{}'?").format(path)):
                    os.remove(path)
                    self.show_warning(_('The file was removed'))
                return
            self.show()
        if action:
            # self.wallet is set in run
            self.run(action)
            return self.wallet

        self.wallet = Wallet(self.storage)
        return self.wallet