trezor: more user friendly when cannot connect
Tell the user and ask if they want to try again. If they say no, raise a silent exception. Apply this more friendly behaviour to the install wizard too (see issue #1668).
This commit is contained in:
parent
317e6cea32
commit
16397b1ed7
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@ -1,4 +1,4 @@
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from sys import stdout
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import sys
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from PyQt4.QtGui import *
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from PyQt4.QtCore import *
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@ -14,8 +14,8 @@ from password_dialog import PasswordLayout, PW_NEW, PW_PASSPHRASE
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from electrum.wallet import Wallet
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from electrum.mnemonic import prepare_seed
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from electrum.util import SilentException
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from electrum.wizard import (WizardBase, UserCancelled,
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from electrum.util import UserCancelled
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from electrum.wizard import (WizardBase,
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MSG_ENTER_PASSWORD, MSG_RESTORE_PASSPHRASE,
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MSG_COSIGNER, MSG_ENTER_SEED_OR_MPK,
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MSG_SHOW_MPK, MSG_VERIFY_SEED,
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@ -119,7 +119,7 @@ class InstallWizard(QDialog, MessageBoxMixin, WizardBase):
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self.refresh_gui()
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def on_error(self, exc_info):
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if not isinstance(exc_info[1], SilentException):
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if not isinstance(exc_info[1], UserCancelled):
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traceback.print_exception(*exc_info)
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self.show_error(str(exc_info[1]))
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@ -167,7 +167,7 @@ class InstallWizard(QDialog, MessageBoxMixin, WizardBase):
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self.print_error("wallet creation cancelled by user")
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self.accept() # For when called from menu
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except BaseException as e:
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self.show_error(str(e))
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self.on_error(sys.exc_info())
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raise
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return wallet
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@ -40,7 +40,7 @@ from electrum.i18n import _
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from electrum.util import (block_explorer, block_explorer_info, format_time,
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block_explorer_URL, format_satoshis, PrintError,
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format_satoshis_plain, NotEnoughFunds, StoreDict,
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SilentException)
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UserCancelled)
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from electrum import Transaction, mnemonic
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from electrum import util, bitcoin, commands
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from electrum import SimpleConfig, COIN_CHOOSERS, paymentrequest
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@ -214,7 +214,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
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self.raise_()
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def on_error(self, exc_info):
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if not isinstance(exc_info[1], SilentException):
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if not isinstance(exc_info[1], UserCancelled):
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traceback.print_exception(*exc_info)
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self.show_error(str(exc_info[1]))
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@ -26,7 +26,7 @@ import time
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from util import *
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from i18n import _
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from util import profiler, PrintError, DaemonThread
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from util import profiler, PrintError, DaemonThread, UserCancelled
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import wallet
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class Plugins(DaemonThread):
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@ -386,26 +386,20 @@ class DeviceMgr(PrintError):
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# The wallet has not been previously paired, so let the user
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# choose an unpaired device and compare its first address.
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info = self.select_device(wallet, plugin, devices)
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if info:
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client = self.client_lookup(info.device.id_)
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if client and client.is_pairable():
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# See comment above for same code
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client.handler = wallet.handler
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# This will trigger a PIN/passphrase entry request
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client_first_address = client.first_address(derivation)
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if client_first_address == first_address:
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self.pair_wallet(wallet, info.device.id_)
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return client
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if info and client:
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# The user input has wrong PIN or passphrase
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raise DeviceUnpairableError(
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_('Unable to pair with your %s.') % plugin.device)
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client = self.client_lookup(info.device.id_)
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if client and client.is_pairable():
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# See comment above for same code
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client.handler = wallet.handler
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# This will trigger a PIN/passphrase entry request
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client_first_address = client.first_address(derivation)
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if client_first_address == first_address:
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self.pair_wallet(wallet, info.device.id_)
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return client
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raise DeviceNotFoundError(
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_('Could not connect to your %s. Verify the cable is '
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'connected and that no other application is using it.')
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% plugin.device)
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# The user input has wrong PIN or passphrase, or it is not pairable
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raise DeviceUnpairableError(
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_('Unable to pair with your %s.') % plugin.device)
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def unpaired_device_infos(self, handler, plugin, devices=None):
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'''Returns a list of DeviceInfo objects: one for each connected,
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@ -432,9 +426,17 @@ class DeviceMgr(PrintError):
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def select_device(self, wallet, plugin, devices=None):
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'''Ask the user to select a device to use if there is more than one,
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and return the DeviceInfo for the device.'''
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infos = self.unpaired_device_infos(wallet.handler, plugin, devices)
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if not infos:
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return None
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while True:
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infos = self.unpaired_device_infos(wallet.handler, plugin, devices)
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if infos:
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break
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msg = _('Could not connect to your %s. Verify the cable is '
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'connected and that no other application is using it.\n\n'
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'Try to connect again?') % plugin.device
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if not wallet.handler.yes_no_question(msg):
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raise UserCancelled()
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devices = None
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if len(infos) == 1:
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return infos[0]
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msg = _("Please select which %s device to use:") % plugin.device
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@ -21,8 +21,10 @@ class InvalidPassword(Exception):
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def __str__(self):
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return _("Incorrect password")
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class SilentException(Exception):
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'''An exception that should probably be suppressed from the user'''
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# Throw this exception to unwind the stack like when an error occurs.
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# However unlike other exceptions the user won't be informed.
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class UserCancelled(Exception):
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'''An exception that is suppressed from the user'''
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pass
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class MyEncoder(json.JSONEncoder):
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@ -36,9 +36,6 @@ MSG_RESTORE_PASSPHRASE = \
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"Note this is NOT a password. Enter nothing if you did not use "
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"one or are unsure.")
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class UserCancelled(Exception):
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pass
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class WizardBase(PrintError):
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'''Base class for gui-specific install wizards.'''
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user_actions = ('create', 'restore')
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@ -34,6 +34,7 @@ class QtHandlerBase(QObject, PrintError):
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logic for handling I/O.'''
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qcSig = pyqtSignal(object, object)
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ynSig = pyqtSignal(object)
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def __init__(self, win, device):
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super(QtHandlerBase, self).__init__()
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@ -43,6 +44,7 @@ class QtHandlerBase(QObject, PrintError):
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win.connect(win, SIGNAL('passphrase_dialog'), self.passphrase_dialog)
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win.connect(win, SIGNAL('word_dialog'), self.word_dialog)
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self.qcSig.connect(self.win_query_choice)
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self.ynSig.connect(self.win_yes_no_question)
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self.win = win
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self.device = device
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self.dialog = None
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@ -60,6 +62,12 @@ class QtHandlerBase(QObject, PrintError):
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self.done.wait()
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return self.choice
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def yes_no_question(self, msg):
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self.done.clear()
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self.ynSig.emit(msg)
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self.done.wait()
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return self.ok
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def show_message(self, msg, on_cancel=None):
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self.win.emit(SIGNAL('message_dialog'), msg, on_cancel)
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@ -126,3 +134,7 @@ class QtHandlerBase(QObject, PrintError):
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def win_query_choice(self, msg, labels):
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self.choice = self.win.query_choice(msg, labels)
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self.done.set()
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def win_yes_no_question(self, msg):
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self.ok = self.top_level_window().question(msg)
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self.done.set()
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@ -1,7 +1,7 @@
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from sys import stderr
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from electrum.i18n import _
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from electrum.util import PrintError, SilentException
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from electrum.util import PrintError, UserCancelled
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class GuiMixin(object):
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@ -27,7 +27,7 @@ class GuiMixin(object):
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# gets old very quickly, so we suppress those.
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if msg.code in (self.types.Failure_PinCancelled,
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self.types.Failure_ActionCancelled):
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raise SilentException()
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raise UserCancelled()
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raise RuntimeError(msg.message)
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def callback_ButtonRequest(self, msg):
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@ -220,8 +220,6 @@ class TrezorCompatiblePlugin(HW_PluginBase):
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process. Then create the wallet accounts.'''
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devmgr = self.device_manager()
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device_info = devmgr.select_device(wallet, self)
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if not device_info:
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raise RuntimeError(_("No devices found"))
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devmgr.pair_wallet(wallet, device_info.device.id_)
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if device_info.initialized:
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task = partial(wallet.create_hd_account, None)
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@ -11,9 +11,8 @@ from ..hw_wallet.qt import QtHandlerBase
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from electrum.i18n import _
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from electrum.plugins import hook, DeviceMgr
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from electrum.util import PrintError
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from electrum.util import PrintError, UserCancelled
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from electrum.wallet import Wallet, BIP44_Wallet
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from electrum.wizard import UserCancelled
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PASSPHRASE_HELP_SHORT =_(
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"Passphrases allow you to access new wallets, each "
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@ -317,10 +316,7 @@ def qt_plugin_class(base_plugin_class):
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device_id = self.device_manager().wallet_id(window.wallet)
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if not device_id:
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info = self.device_manager().select_device(window.wallet, self)
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if info:
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device_id = info.device.id_
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else:
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window.wallet.handler.show_error(_("No devices found"))
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device_id = info.device.id_
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return device_id
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def query_choice(self, window, msg, choices):
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