qt: introduce PasswordLineEdit(QLineEdit)

electrum/gui/qt/confirm_tx_dialog.py

@@ -34,7 +34,8 @@ from electrum.transaction import Transaction, PartialTransaction
 from electrum.simple_config import FEERATE_WARNING_HIGH_FEE
 from electrum.wallet import InternalAddressCorruption
 
-from .util import WindowModalDialog, ColorScheme, HelpLabel, Buttons, CancelButton, BlockingWaitingDialog
+from .util import (WindowModalDialog, ColorScheme, HelpLabel, Buttons, CancelButton,
+                   BlockingWaitingDialog, PasswordLineEdit)
 
 from .fee_slider import FeeSlider
 
@@ -144,8 +145,7 @@ class ConfirmTxDialog(TxEditor, WindowModalDialog):
         grid.addWidget(self.message_label, 6, 0, 1, -1)
         self.pw_label = QLabel(_('Password'))
         self.pw_label.setVisible(self.password_required)
-        self.pw = QLineEdit()
-        self.pw.setEchoMode(2)
+        self.pw = PasswordLineEdit()
         self.pw.setVisible(self.password_required)
         grid.addWidget(self.pw_label, 8, 0)
         grid.addWidget(self.pw, 8, 1, 1, -1)

electrum/gui/qt/installwizard.py

@@ -25,7 +25,7 @@ from electrum.i18n import _
 from .seed_dialog import SeedLayout, KeysLayout
 from .network_dialog import NetworkChoiceLayout
 from .util import (MessageBoxMixin, Buttons, icon_path, ChoicesLayout, WWLabel,
-                   InfoButton, char_width_in_lineedit)
+                   InfoButton, char_width_in_lineedit, PasswordLineEdit)
 from .password_dialog import PasswordLayout, PasswordLayoutForHW, PW_NEW
 from electrum.plugin import run_hook, Plugins
 
@@ -196,9 +196,8 @@ class InstallWizard(QDialog, MessageBoxMixin, BaseWizard):
         msg_label = WWLabel('')
         vbox.addWidget(msg_label)
         hbox2 = QHBoxLayout()
-        pw_e = QLineEdit('', self)
+        pw_e = PasswordLineEdit('', self)
         pw_e.setFixedWidth(17 * char_width_in_lineedit())
-        pw_e.setEchoMode(2)
         pw_label = QLabel(_('Password') + ':')
         hbox2.addWidget(pw_label)
         hbox2.addWidget(pw_e)

electrum/gui/qt/network_dialog.py

@@ -40,7 +40,8 @@ from electrum.interface import serialize_server, deserialize_server
 from electrum.network import Network
 from electrum.logging import get_logger
 
-from .util import Buttons, CloseButton, HelpButton, read_QIcon, char_width_in_lineedit
+from .util import (Buttons, CloseButton, HelpButton, read_QIcon, char_width_in_lineedit,
+                   PasswordLineEdit)
 
 
 _logger = get_logger(__name__)
@@ -267,9 +268,8 @@ class NetworkChoiceLayout(object):
         self.proxy_port.setFixedWidth(fixed_width_port)
         self.proxy_user = QLineEdit()
         self.proxy_user.setPlaceholderText(_("Proxy user"))
-        self.proxy_password = QLineEdit()
+        self.proxy_password = PasswordLineEdit()
         self.proxy_password.setPlaceholderText(_("Password"))
-        self.proxy_password.setEchoMode(QLineEdit.Password)
         self.proxy_password.setFixedWidth(fixed_width_port)
 
         self.proxy_mode.currentIndexChanged.connect(self.set_proxy)

electrum/gui/qt/password_dialog.py

@@ -33,7 +33,8 @@ from PyQt5.QtWidgets import QLineEdit, QLabel, QGridLayout, QVBoxLayout, QCheckB
 from electrum.i18n import _
 from electrum.plugin import run_hook
 
-from .util import icon_path, WindowModalDialog, OkButton, CancelButton, Buttons
+from .util import (icon_path, WindowModalDialog, OkButton, CancelButton, Buttons,
+                   PasswordLineEdit)
 
 
 def check_password_strength(password):
@@ -63,12 +64,9 @@ class PasswordLayout(object):
     def __init__(self, msg, kind, OK_button, wallet=None, force_disable_encrypt_cb=False):
         self.wallet = wallet
 
-        self.pw = QLineEdit()
-        self.pw.setEchoMode(2)
-        self.new_pw = QLineEdit()
-        self.new_pw.setEchoMode(2)
-        self.conf_pw = QLineEdit()
-        self.conf_pw.setEchoMode(2)
+        self.pw = PasswordLineEdit()
+        self.new_pw = PasswordLineEdit()
+        self.conf_pw = PasswordLineEdit()
         self.kind = kind
         self.OK_button = OK_button
 
@@ -290,8 +288,7 @@ class PasswordDialog(WindowModalDialog):
     def __init__(self, parent=None, msg=None):
         msg = msg or _('Please enter your password')
         WindowModalDialog.__init__(self, parent, _("Enter Password"))
-        self.pw = pw = QLineEdit()
-        pw.setEchoMode(2)
+        self.pw = pw = PasswordLineEdit()
         vbox = QVBoxLayout()
         vbox.addWidget(QLabel(msg))
         grid = QGridLayout()

electrum/gui/qt/util.py

@@ -748,6 +748,12 @@ class ButtonsTextEdit(QPlainTextEdit, ButtonsWidget):
         return o
 
 
+class PasswordLineEdit(QLineEdit):
+    def __init__(self, *args, **kwargs):
+        QLineEdit.__init__(self, *args, **kwargs)
+        self.setEchoMode(QLineEdit.Password)
+
+
 class TaskThread(QThread):
     '''Thread that runs background tasks.  Callbacks are guaranteed
     to happen in the context of its parent.'''

electrum/plugins/hw_wallet/qt.py

@@ -33,7 +33,8 @@ from PyQt5.QtWidgets import QVBoxLayout, QLineEdit, QHBoxLayout, QLabel
 
 from electrum.gui.qt.password_dialog import PasswordLayout, PW_PASSPHRASE
 from electrum.gui.qt.util import (read_QIcon, WWLabel, OkButton, WindowModalDialog,
-                                  Buttons, CancelButton, TaskThread, char_width_in_lineedit)
+                                  Buttons, CancelButton, TaskThread, char_width_in_lineedit,
+                                  PasswordLineEdit)
 from electrum.gui.qt.main_window import StatusBarButton, ElectrumWindow
 from electrum.gui.qt.installwizard import InstallWizard
 
@@ -142,8 +143,7 @@ class QtHandlerBase(HardwareHandlerBase, QObject, Logger):
             d.setLayout(vbox)
             passphrase = playout.new_password() if d.exec_() else None
         else:
-            pw = QLineEdit()
-            pw.setEchoMode(2)
+            pw = PasswordLineEdit()
             pw.setMinimumWidth(200)
             vbox = QVBoxLayout()
             vbox.addWidget(WWLabel(msg))

electrum/plugins/ledger/auth2fa.py

@@ -5,6 +5,8 @@ from PyQt5.QtWidgets import (QDialog, QLineEdit, QTextEdit, QVBoxLayout, QLabel,
 
 from btchip.btchip import BTChipException
 
+from electrum.gui.qt.util import PasswordLineEdit
+
 from electrum.i18n import _
 from electrum import constants, bitcoin
 from electrum.logging import get_logger
@@ -79,8 +81,7 @@ class LedgerAuthDialog(QDialog):
         self.pinbox = QWidget()
         pinlayout = QHBoxLayout()
         self.pinbox.setLayout(pinlayout)
-        self.pintxt = QLineEdit()
-        self.pintxt.setEchoMode(2)
+        self.pintxt = PasswordLineEdit()
         self.pintxt.setMaxLength(4)
         self.pintxt.returnPressed.connect(return_pin)
         pinlayout.addWidget(QLabel(_("Enter PIN:")))
@@ -121,8 +122,7 @@ class LedgerAuthDialog(QDialog):
         pin_changed('')    
         cardpin = QHBoxLayout()
         cardpin.addWidget(QLabel(_("Enter PIN:")))
-        self.cardtxt = QLineEdit()
-        self.cardtxt.setEchoMode(2)
+        self.cardtxt = PasswordLineEdit()
         self.cardtxt.setMaxLength(len(self.idxs))
         self.cardtxt.textChanged.connect(pin_changed)
         self.cardtxt.returnPressed.connect(return_pin)

electrum/plugins/trezor/qt.py

@@ -8,7 +8,7 @@ from PyQt5.QtWidgets import (QVBoxLayout, QLabel, QGridLayout, QPushButton,
                              QMessageBox, QFileDialog, QSlider, QTabWidget)
 
 from electrum.gui.qt.util import (WindowModalDialog, WWLabel, Buttons, CancelButton,
-                                  OkButton, CloseButton)
+                                  OkButton, CloseButton, PasswordLineEdit)
 from electrum.i18n import _
 from electrum.plugin import hook
 from electrum.util import bh2u
@@ -172,10 +172,8 @@ class QtHandler(QtHandlerBase):
         OK_button = OkButton(d, _('Enter Passphrase'))
         OnDevice_button = QPushButton(_('Enter Passphrase on Device'))
 
-        new_pw = QLineEdit()
-        new_pw.setEchoMode(2)
-        conf_pw = QLineEdit()
-        conf_pw.setEchoMode(2)
+        new_pw = PasswordLineEdit()
+        conf_pw = PasswordLineEdit()
 
         vbox = QVBoxLayout()
         label = QLabel(msg + "\n")