-WIP-electrum-btcp/gui/kivy/main_window.py

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Python
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import re
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import sys
import time
import datetime
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import traceback
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from decimal import Decimal
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import electrum
from electrum import WalletStorage, Wallet
from electrum_gui.kivy.i18n import _
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from electrum.contacts import Contacts
from electrum.paymentrequest import InvoiceStore
from electrum.util import profiler, InvalidPassword
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from electrum.plugins import run_hook
from electrum.util import format_satoshis, format_satoshis_plain
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from electrum.paymentrequest import PR_UNPAID, PR_PAID, PR_UNKNOWN, PR_EXPIRED
from kivy.app import App
from kivy.core.window import Window
from kivy.logger import Logger
from kivy.utils import platform
from kivy.properties import (OptionProperty, AliasProperty, ObjectProperty,
StringProperty, ListProperty, BooleanProperty)
from kivy.cache import Cache
from kivy.clock import Clock
from kivy.factory import Factory
from kivy.metrics import inch, metrics
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from kivy.lang import Builder
# lazy imports for factory so that widgets can be used in kv
Factory.register('InstallWizard',
module='electrum_gui.kivy.uix.dialogs.installwizard')
Factory.register('InfoBubble', module='electrum_gui.kivy.uix.dialogs')
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Factory.register('OutputList', module='electrum_gui.kivy.uix.dialogs')
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Factory.register('OutputItem', module='electrum_gui.kivy.uix.dialogs')
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#from kivy.core.window import Window
#Window.softinput_mode = 'below_target'
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# delayed imports: for startup speed on android
notification = app = ref = None
util = False
# register widget cache for keeping memory down timeout to forever to cache
# the data
Cache.register('electrum_widgets', timeout=0)
from kivy.uix.screenmanager import Screen
from kivy.uix.tabbedpanel import TabbedPanel
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from kivy.uix.label import Label
from kivy.uix.checkbox import CheckBox
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from kivy.uix.switch import Switch
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from kivy.core.clipboard import Clipboard
Factory.register('TabbedCarousel', module='electrum_gui.kivy.uix.screens')
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# Register fonts without this you won't be able to use bold/italic...
# inside markup.
from kivy.core.text import Label
Label.register('Roboto',
'gui/kivy/data/fonts/Roboto.ttf',
'gui/kivy/data/fonts/Roboto.ttf',
'gui/kivy/data/fonts/Roboto-Bold.ttf',
'gui/kivy/data/fonts/Roboto-Bold.ttf')
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from electrum.util import base_units
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class ElectrumWindow(App):
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electrum_config = ObjectProperty(None)
language = StringProperty('en')
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def set_URI(self, uri):
self.switch_to('send')
self.send_screen.set_URI(uri)
def on_new_intent(self, intent):
if intent.getScheme() != 'bitcoin':
return
uri = intent.getDataString()
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self.set_URI(uri)
def on_language(self, instance, language):
Logger.info('language: {}'.format(language))
_.switch_lang(language)
def on_quotes(self, d):
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#Logger.info("on_quotes")
pass
def on_history(self, d):
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#Logger.info("on_history")
if self.history_screen:
self.history_screen.update()
def _get_bu(self):
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return self.electrum_config.get('base_unit', 'mBTC')
def _set_bu(self, value):
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assert value in base_units.keys()
self.electrum_config.set_key('base_unit', value, True)
self.update_status()
if self.history_screen:
self.history_screen.update()
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base_unit = AliasProperty(_get_bu, _set_bu)
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status = StringProperty('')
fiat_unit = StringProperty('')
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def on_fiat_unit(self, a, b):
if self.history_screen:
self.history_screen.update()
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def decimal_point(self):
return base_units[self.base_unit]
def btc_to_fiat(self, amount_str):
if not amount_str:
return ''
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rate = run_hook('exchange_rate')
if not rate:
return ''
fiat_amount = self.get_amount(amount_str + ' ' + self.base_unit) * rate / pow(10, 8)
return "{:.2f}".format(fiat_amount).rstrip('0').rstrip('.')
def fiat_to_btc(self, fiat_amount):
if not fiat_amount:
return ''
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rate = run_hook('exchange_rate')
if not rate:
return ''
satoshis = int(pow(10,8) * Decimal(fiat_amount) / Decimal(rate))
return format_satoshis_plain(satoshis, self.decimal_point())
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def get_amount(self, amount_str):
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a, u = amount_str.split()
assert u == self.base_unit
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try:
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x = Decimal(a)
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except:
return None
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p = pow(10, self.decimal_point())
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return int(p * x)
_orientation = OptionProperty('landscape',
options=('landscape', 'portrait'))
def _get_orientation(self):
return self._orientation
orientation = AliasProperty(_get_orientation,
None,
bind=('_orientation',))
'''Tries to ascertain the kind of device the app is running on.
Cane be one of `tablet` or `phone`.
:data:`orientation` is a read only `AliasProperty` Defaults to 'landscape'
'''
_ui_mode = OptionProperty('phone', options=('tablet', 'phone'))
def _get_ui_mode(self):
return self._ui_mode
ui_mode = AliasProperty(_get_ui_mode,
None,
bind=('_ui_mode',))
'''Defines tries to ascertain the kind of device the app is running on.
Cane be one of `tablet` or `phone`.
:data:`ui_mode` is a read only `AliasProperty` Defaults to 'phone'
'''
wallet = ObjectProperty(None)
'''Holds the electrum wallet
:attr:`wallet` is a `ObjectProperty` defaults to None.
'''
def __init__(self, **kwargs):
# initialize variables
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self._clipboard = Clipboard
self.info_bubble = None
self.qrscanner = None
self.nfcscanner = None
self.tabs = None
self.is_exit = False
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super(ElectrumWindow, self).__init__(**kwargs)
title = _('Electrum App')
self.electrum_config = config = kwargs.get('config', None)
self.language = config.get('language', 'en')
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self.network = network = kwargs.get('network', None)
self.plugins = kwargs.get('plugins', [])
self.gui_object = kwargs.get('gui_object', None)
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#self.config = self.gui_object.config
self.contacts = Contacts(self.electrum_config)
self.invoices = InvoiceStore(self.electrum_config)
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# create triggers so as to minimize updation a max of 2 times a sec
self._trigger_update_wallet =\
Clock.create_trigger(self.update_wallet, .5)
self._trigger_update_status =\
Clock.create_trigger(self.update_status, .5)
self._trigger_notify_transactions = \
Clock.create_trigger(self.notify_transactions, 5)
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def on_pr(self, pr):
if pr.verify(self.contacts):
key = self.invoices.add(pr)
if self.invoices_screen:
self.invoices_screen.update()
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status = self.invoices.get_status(key)
if status == PR_PAID:
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self.show_error("invoice already paid")
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self.send_screen.do_clear()
else:
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if pr.has_expired():
self.show_error(_('Payment request has expired'))
else:
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self.switch_to('send')
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self.send_screen.set_request(pr)
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else:
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self.show_error("invoice error:" + pr.error)
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self.send_screen.do_clear()
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def on_qr(self, data):
if data.startswith('bitcoin:'):
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self.set_URI(data)
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return
# try to decode transaction
from electrum.bitcoin import base_decode
from electrum.transaction import Transaction
try:
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text = base_decode(data, None, base=43).encode('hex')
tx = Transaction(text)
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except:
tx = None
if tx:
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self.tx_dialog(tx)
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return
# show error
self.show_error("Unable to decode QR data")
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def update_tab(self, name):
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s = getattr(self, name + '_screen', None)
if s:
s.update()
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@profiler
def update_tabs(self):
for tab in ['invoices', 'send', 'history', 'receive', 'requests']:
self.update_tab(tab)
def switch_to(self, name):
s = getattr(self, name + '_screen', None)
if self.send_screen is None:
s = self.tabs.ids[name + '_screen']
s.load_screen()
panel = self.tabs.ids.panel
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tab = self.tabs.ids[name + '_tab']
panel.switch_to(tab)
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def show_request(self, addr):
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self.switch_to('receive')
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self.receive_screen.screen.address = addr
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def show_pr_details(self, req, status, is_invoice):
from electrum.util import format_time
requestor = req.get('requestor')
exp = req.get('exp')
memo = req.get('memo')
amount = req.get('amount')
popup = Builder.load_file('gui/kivy/uix/ui_screens/invoice.kv')
popup.is_invoice = is_invoice
popup.amount = amount
popup.requestor = requestor if is_invoice else req.get('address')
popup.exp = format_time(exp) if exp else ''
popup.description = memo if memo else ''
popup.signature = req.get('signature', '')
popup.status = status
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txid = req.get('txid')
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popup.tx_hash = txid or ''
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popup.on_open = lambda: popup.ids.output_list.update(req.get('outputs', []))
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popup.open()
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def qr_dialog(self, title, data, show_text=False):
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from uix.dialogs.qr_dialog import QRDialog
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popup = QRDialog(title, data, show_text)
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popup.open()
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def scan_qr(self, on_complete):
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if platform != 'android':
return
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from jnius import autoclass
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from android import activity
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PythonActivity = autoclass('org.renpy.android.PythonActivity')
Intent = autoclass('android.content.Intent')
intent = Intent("com.google.zxing.client.android.SCAN")
intent.putExtra("SCAN_MODE", "QR_CODE_MODE")
def on_qr_result(requestCode, resultCode, intent):
if requestCode == 0:
if resultCode == -1: # RESULT_OK:
contents = intent.getStringExtra("SCAN_RESULT")
if intent.getStringExtra("SCAN_RESULT_FORMAT") == 'QR_CODE':
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on_complete(contents)
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activity.bind(on_activity_result=on_qr_result)
try:
PythonActivity.mActivity.startActivityForResult(intent, 0)
except:
self.show_error('Could not start Barcode Scanner')
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def build(self):
return Builder.load_file('gui/kivy/main.kv')
def _pause(self):
if platform == 'android':
# move activity to back
from jnius import autoclass
python_act = autoclass('org.renpy.android.PythonActivity')
mActivity = python_act.mActivity
mActivity.moveTaskToBack(True)
def on_start(self):
''' This is the start point of the kivy ui
'''
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import time
Logger.info('Time to on_start: {} <<<<<<<<'.format(time.clock()))
Logger.info("dpi: {} {}".format(metrics.dpi, metrics.dpi_rounded))
win = Window
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win.bind(size=self.on_size, on_keyboard=self.on_keyboard)
win.bind(on_key_down=self.on_key_down)
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win.softinput_mode = 'below_target'
self.on_size(win, win.size)
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self.init_ui()
self.load_wallet_by_name(self.electrum_config.get_wallet_path())
# init plugins
run_hook('init_kivy', self)
# default tab
self.switch_to('history')
# bind intent for bitcoin: URI scheme
if platform == 'android':
from android import activity
activity.bind(on_new_intent=self.on_new_intent)
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# URI passed in config
uri = self.electrum_config.get('url')
if uri:
self.set_URI(uri)
def load_wallet_by_name(self, wallet_path):
if not wallet_path:
return
config = self.electrum_config
storage = WalletStorage(wallet_path)
Logger.info('Electrum: Check for existing wallet')
if storage.file_exists:
wallet = Wallet(storage)
action = wallet.get_action()
else:
action = 'new'
if action is not None:
# start installation wizard
Logger.debug('Electrum: Wallet not found. Launching install wizard')
wizard = Factory.InstallWizard(config, self.network, storage)
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wizard.bind(on_wizard_complete=lambda instance, wallet: self.load_wallet(wallet))
wizard.run(action)
else:
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self.load_wallet(wallet)
self.on_resume()
def on_stop(self):
self.stop_wallet()
def stop_wallet(self):
if self.wallet:
self.wallet.stop_threads()
def on_key_down(self, instance, key, keycode, codepoint, modifiers):
if 'ctrl' in modifiers:
# q=24 w=25
if keycode in (24, 25):
self.stop()
elif keycode == 27:
# r=27
# force update wallet
self.update_wallet()
elif keycode == 112:
# pageup
#TODO move to next tab
pass
elif keycode == 117:
# pagedown
#TODO move to prev tab
pass
#TODO: alt+tab_number to activate the particular tab
def on_keyboard(self, instance, key, keycode, codepoint, modifiers):
if key == 27 and self.is_exit is False:
self.is_exit = True
self.show_info(_('Press again to exit'))
return True
self.is_exit = False
# override settings button
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if key in (319, 282): #f1/settings button on android
#self.gui.main_gui.toggle_settings(self)
return True
def popup_dialog(self, name):
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if name == 'settings':
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from uix.dialogs.settings import SettingsDialog
d = SettingsDialog(self)
d.open()
elif name == 'wallets':
from uix.dialogs.wallets import WalletDialog
d = WalletDialog()
d.open()
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else:
popup = Builder.load_file('gui/kivy/uix/ui_screens/'+name+'.kv')
popup.open()
@profiler
def init_ui(self):
''' Initialize The Ux part of electrum. This function performs the basic
tasks of setting up the ui.
'''
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from weakref import ref
self.funds_error = False
# setup UX
self.screens = {}
#setup lazy imports for mainscreen
Factory.register('AnimatedPopup',
module='electrum_gui.kivy.uix.dialogs')
Factory.register('QRCodeWidget',
module='electrum_gui.kivy.uix.qrcodewidget')
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# preload widgets. Remove this if you want to load the widgets on demand
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#Cache.append('electrum_widgets', 'AnimatedPopup', Factory.AnimatedPopup())
#Cache.append('electrum_widgets', 'QRCodeWidget', Factory.QRCodeWidget())
# load and focus the ui
self.root.manager = self.root.ids['manager']
self.history_screen = None
self.contacts_screen = None
self.send_screen = None
self.invoices_screen = None
self.receive_screen = None
self.requests_screen = None
self.icon = "icons/electrum.png"
# connect callbacks
if self.network:
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interests = ['updated', 'status', 'new_transaction']
self.network.register_callback(self.on_network, interests)
#self.wallet = None
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self.tabs = self.root.ids['tabs']
def on_network(self, event, *args):
if event == 'updated':
self._trigger_update_wallet()
elif event == 'status':
self._trigger_update_status()
elif event == 'new_transaction':
self._trigger_notify_transactions(*args)
@profiler
def load_wallet(self, wallet):
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self.stop_wallet()
self.wallet = wallet
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self.wallet.start_threads(self.network)
self.current_account = self.wallet.storage.get('current_account', None)
self.update_wallet()
# Once GUI has been initialized check if we want to announce something
# since the callback has been called before the GUI was initialized
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self.update_tabs()
self.notify_transactions()
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run_hook('load_wallet', wallet, self)
def update_status(self, *dt):
if not self.wallet:
return
if self.network is None or not self.network.is_running():
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self.status = _("Offline")
elif self.network.is_connected():
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server_height = self.network.get_server_height()
server_lag = self.network.get_local_height() - server_height
if not self.wallet.up_to_date or server_height == 0:
self.status = _("Synchronizing...")
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elif server_lag > 1:
self.status = _("Server lagging (%d blocks)"%server_lag)
else:
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c, u, x = self.wallet.get_account_balance(self.current_account)
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text = self.format_amount(c+x+u)
self.status = str(text.strip() + ' ' + self.base_unit)
else:
self.status = _("Not connected")
def get_max_amount(self):
inputs = self.wallet.get_spendable_coins(None)
addr = str(self.send_screen.screen.address) or self.wallet.dummy_address()
amount, fee = self.wallet.get_max_amount(self.electrum_config, inputs, addr, None)
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return format_satoshis_plain(amount, self.decimal_point())
def format_amount(self, x, is_diff=False, whitespaces=False):
return format_satoshis(x, is_diff, 0, self.decimal_point(), whitespaces)
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def format_amount_and_units(self, x):
return format_satoshis_plain(x, self.decimal_point()) + ' ' + self.base_unit
@profiler
def update_wallet(self, *dt):
self._trigger_update_status()
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#if self.wallet.up_to_date or not self.network or not self.network.is_connected():
self.update_tabs()
@profiler
def notify_transactions(self, *dt):
if not self.network or not self.network.is_connected():
return
# temporarily disabled for merge
return
iface = self.network
ptfn = iface.pending_transactions_for_notifications
if len(ptfn) > 0:
# Combine the transactions if there are more then three
tx_amount = len(ptfn)
if(tx_amount >= 3):
total_amount = 0
for tx in ptfn:
is_relevant, is_mine, v, fee = self.wallet.get_tx_value(tx)
if(v > 0):
total_amount += v
self.notify(_("{txs}s new transactions received. Total amount"
"received in the new transactions {amount}s"
"{unit}s").format(txs=tx_amount,
amount=self.format_amount(total_amount),
unit=self.base_unit()))
iface.pending_transactions_for_notifications = []
else:
for tx in iface.pending_transactions_for_notifications:
if tx:
iface.pending_transactions_for_notifications.remove(tx)
is_relevant, is_mine, v, fee = self.wallet.get_tx_value(tx)
if(v > 0):
self.notify(
_("{txs} new transaction received. {amount} {unit}").
format(txs=tx_amount, amount=self.format_amount(v),
unit=self.base_unit))
def notify(self, message):
try:
global notification, os
if not notification:
from plyer import notification
import os
icon = (os.path.dirname(os.path.realpath(__file__))
+ '/../../' + self.icon)
notification.notify('Electrum', message,
app_icon=icon, app_name='Electrum')
except ImportError:
Logger.Error('Notification: needs plyer; `sudo pip install plyer`')
def on_pause(self):
# pause nfc
if self.qrscanner:
self.qrscanner.stop()
if self.nfcscanner:
self.nfcscanner.nfc_disable()
return True
def on_resume(self):
if self.qrscanner and qrscanner.get_parent_window():
self.qrscanner.start()
if self.nfcscanner:
self.nfcscanner.nfc_enable()
def on_size(self, instance, value):
width, height = value
self._orientation = 'landscape' if width > height else 'portrait'
self._ui_mode = 'tablet' if min(width, height) > inch(3.51) else 'phone'
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def on_ref_label(self, label, touch):
if label.touched:
label.touched = False
self.qr_dialog(label.name, label.data, True)
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else:
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label.touched = True
self._clipboard.copy(label.data)
Clock.schedule_once(lambda dt: self.show_info(_('Text copied to clipboard.\nTap again to display it as QR code.')))
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def set_send(self, address, amount, label, message):
self.send_payment(address, amount=amount, label=label, message=message)
def show_error(self, error, width='200dp', pos=None, arrow_pos=None,
exit=False, icon='atlas://gui/kivy/theming/light/error', duration=0,
modal=False):
''' Show a error Message Bubble.
'''
self.show_info_bubble( text=error, icon=icon, width=width,
pos=pos or Window.center, arrow_pos=arrow_pos, exit=exit,
duration=duration, modal=modal)
def show_info(self, error, width='200dp', pos=None, arrow_pos=None,
exit=False, duration=0, modal=False):
''' Show a Info Message Bubble.
'''
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self.show_error(error, icon='atlas://gui/kivy/theming/light/important',
duration=duration, modal=modal, exit=exit, pos=pos,
arrow_pos=arrow_pos)
def show_info_bubble(self, text=_('Hello World'), pos=None, duration=0,
arrow_pos='bottom_mid', width=None, icon='', modal=False, exit=False):
'''Method to show a Information Bubble
.. parameters::
text: Message to be displayed
pos: position for the bubble
duration: duration the bubble remains on screen. 0 = click to hide
width: width of the Bubble
arrow_pos: arrow position for the bubble
'''
info_bubble = self.info_bubble
if not info_bubble:
info_bubble = self.info_bubble = Factory.InfoBubble()
win = Window
if info_bubble.parent:
win.remove_widget(info_bubble
if not info_bubble.modal else
info_bubble._modal_view)
if not arrow_pos:
info_bubble.show_arrow = False
else:
info_bubble.show_arrow = True
info_bubble.arrow_pos = arrow_pos
img = info_bubble.ids.img
if text == 'texture':
# icon holds a texture not a source image
# display the texture in full screen
text = ''
img.texture = icon
info_bubble.fs = True
info_bubble.show_arrow = False
img.allow_stretch = True
info_bubble.dim_background = True
info_bubble.background_image = 'atlas://gui/kivy/theming/light/card'
else:
info_bubble.fs = False
info_bubble.icon = icon
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#if img.texture and img._coreimage:
# img.reload()
img.allow_stretch = False
info_bubble.dim_background = False
info_bubble.background_image = 'atlas://data/images/defaulttheme/bubble'
info_bubble.message = text
if not pos:
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pos = (win.center[0], win.center[1] - (info_bubble.height/2))
info_bubble.show(pos, duration, width, modal=modal, exit=exit)
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def tx_dialog(self, tx):
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from uix.dialogs.tx_dialog import TxDialog
d = TxDialog(self, tx)
d.open()
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def address_dialog(self, screen):
pass
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def description_dialog(self, screen):
from uix.dialogs.label_dialog import LabelDialog
text = screen.message
def callback(text):
screen.message = text
d = LabelDialog(_('Enter description'), text, callback)
d.open()
@profiler
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def amount_dialog(self, screen, show_max):
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from uix.dialogs.amount_dialog import AmountDialog
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amount = screen.amount
if amount:
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amount, u = str(amount).split()
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assert u == self.base_unit
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def cb(amount):
screen.amount = amount
popup = AmountDialog(show_max, amount, cb)
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popup.open()
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def protected(self, msg, f, args):
if self.wallet.use_encryption:
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self.password_dialog(msg, f, args)
else:
apply(f, args + (None,))
def show_seed(self, label):
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self.protected(_("Enter your PIN code in order to decrypt your seed"), self._show_seed, (label,))
def _show_seed(self, label, password):
try:
seed = self.wallet.get_seed(password)
except:
self.show_error("Invalid PIN")
return
label.text = _('Seed') + ':\n' + seed
def change_password(self):
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self.protected(_("Changing PIN code.") + '\n' + _("Enter your current PIN:"), self._change_password, ())
def _change_password(self, old_password):
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if self.wallet.use_encryption:
try:
self.wallet.check_password(old_password)
except InvalidPassword:
self.show_error("Invalid PIN")
return
self.password_dialog(_('Enter new PIN'), self._change_password2, (old_password,))
def _change_password2(self, old_password, new_password):
self.password_dialog(_('Confirm new PIN'), self._change_password3, (old_password, new_password))
def _change_password3(self, old_password, new_password, confirmed_password):
if new_password == confirmed_password:
self.wallet.update_password(old_password, new_password)
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else:
self.show_error("PIN numbers do not match")
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def password_dialog(self, msg, f, args):
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from uix.dialogs.password_dialog import PasswordDialog
def callback(pw):
Clock.schedule_once(lambda x: apply(f, args + (pw,)), 0.1)
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popup = PasswordDialog(msg, callback)
popup.open()