electrum-bitcoinprivate/gui/qt/seed_dialog.py

#!/usr/bin/env python
#
# Electrum - lightweight Bitcoin client
# Copyright (C) 2013 ecdsa@github
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.

from PyQt4.QtGui import *
from PyQt4.QtCore import *
import PyQt4.QtCore as QtCore
from electrum.i18n import _

from util import *
from qrtextedit import ShowQRTextEdit, ScanQRTextEdit

class SeedDialog(WindowModalDialog):
    def __init__(self, parent, seed, imported_keys):
        WindowModalDialog.__init__(self, parent, ('Electrum - ' + _('Seed')))
        self.setMinimumWidth(400)
        vbox = show_seed_box_msg(seed)
        if imported_keys:
            vbox.addWidget(QLabel("<b>"+_("WARNING")+":</b> " + _("Your wallet contains imported keys. These keys cannot be recovered from seed.") + "</b><p>"))
        vbox.addLayout(Buttons(CloseButton(self)))
        self.setLayout(vbox)


def icon_filename(sid):
    if sid == 'cold':
        return ":icons/cold_seed.png"
    elif sid == 'hot':
        return ":icons/hot_seed.png"
    else:
        return ":icons/seed.png"

class SeedLayout(object):
    def __init__(self, seed, sid=None):
        if seed:
            self.vbox = self.seed_and_warning_layout(seed, sid)
        else:
            self.vbox = self.seed_layout(seed, sid)

    def layout(self):
        return self.vbox

    def seed_edit(self):
        return self.seed_e

    def seed_and_warning_layout(self, seed, sid=None):
        vbox = QVBoxLayout()
        vbox.addLayout(self.seed_layout(seed, sid))
        msg = ''.join([
            "<p>",
            _("Please save these %d words on paper (order is important). "),
            _("This seed will allow you to recover your wallet in case "
              "of computer failure.") + "<br/>",
            "</p>",
            "<b>" + _("WARNING") + ":</b> ",
            "<ul>",
            "<li>" + _("Never disclose your seed.") + "</li>",
            "<li>" + _("Never type it on a website.") + "</li>",
            "<li>" + _("Do not send your seed to a printer.") + "</li>",
            "</ul>"
        ]) % len(seed.split())
        label2 = QLabel(msg)
        label2.setWordWrap(True)
        vbox.addWidget(label2)
        return vbox

    def seed_layout(self, seed, sid=None):
        logo = QLabel()
        logo.setPixmap(QPixmap(icon_filename(sid)).scaledToWidth(56))
        logo.setMaximumWidth(60)
        if not seed:
            seed_e = ScanQRTextEdit()
            seed_e.setTabChangesFocus(True)
        else:
            seed_e = ShowQRTextEdit(text=seed)
        seed_e.setMaximumHeight(100)
        self.seed_e = seed_e
        hbox = QHBoxLayout()
        hbox.addWidget(logo)
        hbox.addWidget(seed_e)
        return hbox