LBRY-Vault/gui/qt/installwizard.py
Johann Bauer 15d74b4e19 Fix "Back" button in installwizard
Since this seems to be the first page of the wizard,
there is nothing to go back to. Furthermore, clicking
"Back" actually takes you to the next step.

This changes the button to "Close" and closes the wizard.
2017-07-12 21:37:29 +02:00

541 lines
20 KiB
Python

import sys
import os
from PyQt4.QtGui import *
from PyQt4.QtCore import *
import PyQt4.QtCore as QtCore
import electrum
from electrum import Wallet, WalletStorage
from electrum.util import UserCancelled, InvalidPassword
from electrum.base_wizard import BaseWizard
from electrum.i18n import _
from seed_dialog import SeedLayout, KeysLayout
from network_dialog import NetworkChoiceLayout
from util import *
from password_dialog import PasswordLayout, PW_NEW
class GoBack(Exception):
pass
MSG_GENERATING_WAIT = _("Electrum is generating your addresses, please wait...")
MSG_ENTER_ANYTHING = _("Please enter a seed phrase, a master key, a list of "
"Bitcoin addresses, or a list of private keys")
MSG_ENTER_SEED_OR_MPK = _("Please enter a seed phrase or a master key (xpub or xprv):")
MSG_COSIGNER = _("Please enter the master public key of cosigner #%d:")
MSG_ENTER_PASSWORD = _("Choose a password to encrypt your wallet keys.") + '\n'\
+ _("Leave this field empty if you want to disable encryption.")
MSG_RESTORE_PASSPHRASE = \
_("Please enter your seed derivation passphrase. "
"Note: this is NOT your encryption password. "
"Leave this field empty if you did not use one or are unsure.")
class CosignWidget(QWidget):
size = 120
def __init__(self, m, n):
QWidget.__init__(self)
self.R = QRect(0, 0, self.size, self.size)
self.setGeometry(self.R)
self.setMinimumHeight(self.size)
self.setMaximumHeight(self.size)
self.m = m
self.n = n
def set_n(self, n):
self.n = n
self.update()
def set_m(self, m):
self.m = m
self.update()
def paintEvent(self, event):
import math
bgcolor = self.palette().color(QPalette.Background)
pen = QPen(bgcolor, 7, QtCore.Qt.SolidLine)
qp = QPainter()
qp.begin(self)
qp.setPen(pen)
qp.setRenderHint(QPainter.Antialiasing)
qp.setBrush(Qt.gray)
for i in range(self.n):
alpha = int(16* 360 * i/self.n)
alpha2 = int(16* 360 * 1/self.n)
qp.setBrush(Qt.green if i<self.m else Qt.gray)
qp.drawPie(self.R, alpha, alpha2)
qp.end()
def wizard_dialog(func):
def func_wrapper(*args, **kwargs):
run_next = kwargs['run_next']
wizard = args[0]
wizard.back_button.setText(_('Back') if wizard.can_go_back() else _('Cancel'))
try:
out = func(*args, **kwargs)
except GoBack:
wizard.go_back() if wizard.can_go_back() else wizard.close()
return
except UserCancelled:
return
#if out is None:
# out = ()
if type(out) is not tuple:
out = (out,)
apply(run_next, out)
return func_wrapper
# WindowModalDialog must come first as it overrides show_error
class InstallWizard(QDialog, MessageBoxMixin, BaseWizard):
def __init__(self, config, app, plugins, storage):
BaseWizard.__init__(self, config, storage)
QDialog.__init__(self, None)
self.setWindowTitle('Electrum - ' + _('Install Wizard'))
self.app = app
self.config = config
# Set for base base class
self.plugins = plugins
self.language_for_seed = config.get('language')
self.setMinimumSize(600, 400)
self.connect(self, QtCore.SIGNAL('accept'), self.accept)
self.title = QLabel()
self.main_widget = QWidget()
self.back_button = QPushButton(_("Back"), self)
self.back_button.setText(_('Back') if self.can_go_back() else _('Cancel'))
self.next_button = QPushButton(_("Next"), self)
self.next_button.setDefault(True)
self.logo = QLabel()
self.please_wait = QLabel(_("Please wait..."))
self.please_wait.setAlignment(Qt.AlignCenter)
self.icon_filename = None
self.loop = QEventLoop()
self.rejected.connect(lambda: self.loop.exit(0))
self.back_button.clicked.connect(lambda: self.loop.exit(1))
self.next_button.clicked.connect(lambda: self.loop.exit(2))
outer_vbox = QVBoxLayout(self)
inner_vbox = QVBoxLayout()
inner_vbox = QVBoxLayout()
inner_vbox.addWidget(self.title)
inner_vbox.addWidget(self.main_widget)
inner_vbox.addStretch(1)
inner_vbox.addWidget(self.please_wait)
inner_vbox.addStretch(1)
icon_vbox = QVBoxLayout()
icon_vbox.addWidget(self.logo)
icon_vbox.addStretch(1)
hbox = QHBoxLayout()
hbox.addLayout(icon_vbox)
hbox.addSpacing(5)
hbox.addLayout(inner_vbox)
hbox.setStretchFactor(inner_vbox, 1)
outer_vbox.addLayout(hbox)
outer_vbox.addLayout(Buttons(self.back_button, self.next_button))
self.set_icon(':icons/electrum.png')
self.show()
self.raise_()
self.refresh_gui() # Need for QT on MacOSX. Lame.
def run_and_get_wallet(self):
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 wallet'))
wallet_folder = os.path.dirname(self.storage.path)
def on_choose():
path = unicode(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, unicode(filename))
try:
self.storage = WalletStorage(path)
except IOError:
self.storage = None
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 self.storage.file_exists() and self.storage.is_encrypted():
msg = _("This file is encrypted.") + '\n' + _('Enter your password or choose another file.')
pw = True
else:
msg = _("Press 'Next' to open this wallet.")
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)
self.name_e.setText(os.path.basename(self.storage.path))
while True:
if self.storage.file_exists() and not self.storage.is_encrypted():
break
if self.loop.exec_() != 2: # 2 = next
self.close()
if not self.storage.file_exists():
break
if self.storage.file_exists() and self.storage.is_encrypted():
password = unicode(self.pw_e.text())
try:
self.storage.decrypt(password)
break
except InvalidPassword as e:
QMessageBox.information(None, _('Error'), str(e), _('OK'))
continue
except BaseException as e:
traceback.print_exc(file=sys.stdout)
QMessageBox.information(None, _('Error'), str(e), _('OK'))
return
path = self.storage.path
if self.storage.requires_split():
self.hide()
msg = _("The wallet '%s' contains multiple accounts, which are no longer supported in Electrum 2.7.\n\n"
"Do you want to split your wallet into multiple files?"%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
if self.storage.requires_upgrade():
self.hide()
msg = _("The format of your wallet '%s' must be upgraded for Electrum. This change will not be backward compatible"%path)
if not self.question(msg):
return
self.storage.upgrade()
self.show_warning(_('Your wallet was upgraded successfully'))
self.wallet = Wallet(self.storage)
self.terminate()
return self.wallet
action = self.storage.get_action()
if action and action != 'new':
self.hide()
msg = _("The file '%s' contains an incompletely created wallet.\n"
"Do you want to complete its creation now?") % path
if not self.question(msg):
if self.question(_("Do you want to delete '%s'?") % 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)
self.terminate()
return self.wallet
def finished(self):
"""Called in hardware client wrapper, in order to close popups."""
return
def on_error(self, exc_info):
if not isinstance(exc_info[1], UserCancelled):
traceback.print_exception(*exc_info)
self.show_error(str(exc_info[1]))
def set_icon(self, filename):
prior_filename, self.icon_filename = self.icon_filename, filename
self.logo.setPixmap(QPixmap(filename).scaledToWidth(60))
return prior_filename
def set_layout(self, layout, title=None, next_enabled=True):
self.title.setText("<b>%s</b>"%title if title else "")
self.title.setVisible(bool(title))
# Get rid of any prior layout by assigning it to a temporary widget
prior_layout = self.main_widget.layout()
if prior_layout:
QWidget().setLayout(prior_layout)
self.main_widget.setLayout(layout)
self.back_button.setEnabled(True)
self.next_button.setEnabled(next_enabled)
if next_enabled:
self.next_button.setFocus()
self.main_widget.setVisible(True)
self.please_wait.setVisible(False)
def exec_layout(self, layout, title=None, raise_on_cancel=True,
next_enabled=True):
self.set_layout(layout, title, next_enabled)
result = self.loop.exec_()
if not result and raise_on_cancel:
raise UserCancelled
if result == 1:
raise GoBack
self.title.setVisible(False)
self.back_button.setEnabled(False)
self.next_button.setEnabled(False)
self.main_widget.setVisible(False)
self.please_wait.setVisible(True)
self.refresh_gui()
return result
def refresh_gui(self):
# For some reason, to refresh the GUI this needs to be called twice
self.app.processEvents()
self.app.processEvents()
def remove_from_recently_open(self, filename):
self.config.remove_from_recently_open(filename)
def text_input(self, title, message, is_valid):
slayout = KeysLayout(parent=self, title=message, is_valid=is_valid)
self.exec_layout(slayout, title, next_enabled=False)
return slayout.get_text()
def seed_input(self, title, message, is_seed, options):
slayout = SeedLayout(title=message, is_seed=is_seed, options=options, parent=self)
self.exec_layout(slayout, title, next_enabled=False)
return slayout.get_seed(), slayout.is_bip39, slayout.is_ext
@wizard_dialog
def add_xpub_dialog(self, title, message, is_valid, run_next):
return self.text_input(title, message, is_valid)
@wizard_dialog
def add_cosigner_dialog(self, run_next, index, is_valid):
title = _("Add Cosigner") + " %d"%index
message = ' '.join([
_('Please enter the master public key (xpub) of your cosigner.'),
_('Enter their master private key (xprv) if you want to be able to sign for them.')
])
return self.text_input(title, message, is_valid)
@wizard_dialog
def restore_seed_dialog(self, run_next, test):
options = []
if self.opt_ext:
options.append('ext')
if self.opt_bip39:
options.append('bip39')
title = _('Enter Seed')
message = _('Please enter your seed phrase in order to restore your wallet.')
return self.seed_input(title, message, test, options)
@wizard_dialog
def confirm_seed_dialog(self, run_next, test):
self.app.clipboard().clear()
title = _('Confirm Seed')
message = ' '.join([
_('Your seed is important!'),
_('If you lose your seed, your money will be permanently lost.'),
_('To make sure that you have properly saved your seed, please retype it here.')
])
seed, is_bip39, is_ext = self.seed_input(title, message, test, None)
return seed
@wizard_dialog
def show_seed_dialog(self, run_next, seed_text):
title = _("Your wallet generation seed is:")
slayout = SeedLayout(seed=seed_text, title=title, msg=True, options=['ext'])
self.exec_layout(slayout)
return slayout.is_ext
def pw_layout(self, msg, kind):
playout = PasswordLayout(None, msg, kind, self.next_button)
playout.encrypt_cb.setChecked(True)
self.exec_layout(playout.layout())
return playout.new_password(), playout.encrypt_cb.isChecked()
@wizard_dialog
def request_password(self, run_next):
"""Request the user enter a new password and confirm it. Return
the password or None for no password."""
return self.pw_layout(MSG_ENTER_PASSWORD, PW_NEW)
def show_restore(self, wallet, network):
# FIXME: these messages are shown after the install wizard is
# finished and the window closed. On MacOSX they appear parented
# with a re-appeared ghost install wizard window...
if network:
def task():
wallet.wait_until_synchronized()
if wallet.is_found():
msg = _("Recovery successful")
else:
msg = _("No transactions found for this seed")
self.emit(QtCore.SIGNAL('synchronized'), msg)
self.connect(self, QtCore.SIGNAL('synchronized'), self.show_message)
t = threading.Thread(target = task)
t.daemon = True
t.start()
else:
msg = _("This wallet was restored offline. It may "
"contain more addresses than displayed.")
self.show_message(msg)
@wizard_dialog
def confirm_dialog(self, title, message, run_next):
self.confirm(message, title)
def confirm(self, message, title):
vbox = QVBoxLayout()
vbox.addWidget(WWLabel(message))
self.exec_layout(vbox, title)
@wizard_dialog
def action_dialog(self, action, run_next):
self.run(action)
def terminate(self):
self.emit(QtCore.SIGNAL('accept'))
def waiting_dialog(self, task, msg):
self.please_wait.setText(MSG_GENERATING_WAIT)
self.refresh_gui()
t = threading.Thread(target = task)
t.start()
t.join()
@wizard_dialog
def choice_dialog(self, title, message, choices, run_next):
c_values = map(lambda x: x[0], choices)
c_titles = map(lambda x: x[1], choices)
clayout = ChoicesLayout(message, c_titles)
vbox = QVBoxLayout()
vbox.addLayout(clayout.layout())
self.exec_layout(vbox, title)
action = c_values[clayout.selected_index()]
return action
def query_choice(self, msg, choices):
"""called by hardware wallets"""
clayout = ChoicesLayout(msg, choices)
vbox = QVBoxLayout()
vbox.addLayout(clayout.layout())
self.exec_layout(vbox, '')
return clayout.selected_index()
@wizard_dialog
def line_dialog(self, run_next, title, message, default, test, warning=''):
vbox = QVBoxLayout()
vbox.addWidget(WWLabel(message))
line = QLineEdit()
line.setText(default)
def f(text):
self.next_button.setEnabled(test(unicode(text)))
line.textEdited.connect(f)
vbox.addWidget(line)
vbox.addWidget(WWLabel(warning))
self.exec_layout(vbox, title, next_enabled=test(default))
return ' '.join(unicode(line.text()).split())
@wizard_dialog
def show_xpub_dialog(self, xpub, run_next):
msg = ' '.join([
_("Here is your master public key."),
_("Please share it with your cosigners.")
])
vbox = QVBoxLayout()
layout = SeedLayout(xpub, title=msg, icon=False)
vbox.addLayout(layout.layout())
self.exec_layout(vbox, _('Master Public Key'))
return None
def init_network(self, network):
message = _("Electrum communicates with remote servers to get "
"information about your transactions and addresses. The "
"servers all fulfil the same purpose only differing in "
"hardware. In most cases you simply want to let Electrum "
"pick one at random. However if you prefer feel free to "
"select a server manually.")
choices = [_("Auto connect"), _("Select server manually")]
title = _("How do you want to connect to a server? ")
clayout = ChoicesLayout(message, choices)
self.back_button.setText(_('Cancel'))
self.exec_layout(clayout.layout(), title)
r = clayout.selected_index()
if r == 1:
nlayout = NetworkChoiceLayout(network, self.config, wizard=True)
if self.exec_layout(nlayout.layout()):
nlayout.accept()
else:
network.auto_connect = True
self.config.set_key('auto_connect', True, True)
@wizard_dialog
def multisig_dialog(self, run_next):
cw = CosignWidget(2, 2)
m_edit = QSlider(Qt.Horizontal, self)
n_edit = QSlider(Qt.Horizontal, self)
n_edit.setMinimum(2)
n_edit.setMaximum(15)
m_edit.setMinimum(1)
m_edit.setMaximum(2)
n_edit.setValue(2)
m_edit.setValue(2)
n_label = QLabel()
m_label = QLabel()
grid = QGridLayout()
grid.addWidget(n_label, 0, 0)
grid.addWidget(n_edit, 0, 1)
grid.addWidget(m_label, 1, 0)
grid.addWidget(m_edit, 1, 1)
def on_m(m):
m_label.setText(_('Require %d signatures')%m)
cw.set_m(m)
def on_n(n):
n_label.setText(_('From %d cosigners')%n)
cw.set_n(n)
m_edit.setMaximum(n)
n_edit.valueChanged.connect(on_n)
m_edit.valueChanged.connect(on_m)
on_n(2)
on_m(2)
vbox = QVBoxLayout()
vbox.addWidget(cw)
vbox.addWidget(WWLabel(_("Choose the number of signatures needed to unlock funds in your wallet:")))
vbox.addLayout(grid)
self.exec_layout(vbox, _("Multi-Signature Wallet"))
m = int(m_edit.value())
n = int(n_edit.value())
return (m, n)