show bip39 warning and add info about checksum disabled

gui/qt/seed_dialog.py

@@ -62,22 +62,21 @@ class SeedLayout(QVBoxLayout):
             vbox.addWidget(cb_ext)
         if 'bip39' in self.options:
             def f(b):
+                self.is_seed = (lambda x: bool(x)) if b else self.saved_is_seed
+                self.on_edit()
                 if b:
                     msg = ' '.join([
-                        '<b>' + _('Warning') + '</b>' + ': ',
-                        _('BIP39 seeds may not be supported in the future.'),
+                        '<b>' + _('Warning') + ': BIP39 seeds are dangerous!' + '</b><br/><br/>',
+                        _('BIP39 seeds can be imported in Electrum so that users can access funds locked in other wallets.'),
+                        _('However, BIP39 seeds do not include a version number, which compromises compatibility with future wallet software.'),
                         '<br/><br/>',
-                        _('As technology matures, Bitcoin address generation may change.'),
-                        _('However, BIP39 seeds do not include a version number.'),
-                        _('As a result, it is not possible to infer your wallet type from a BIP39 seed.'),
-                        '<br/><br/>',
-                        _('We do not guarantee that BIP39 seeds will be supported in future versions of Electrum.'),
-                        _('We recommend to use seeds generated by Electrum or compatible wallets.'),
+                        _('We do not guarantee that BIP39 imports will always be supported in Electrum.'),
+                        _('In addition, Electrum does not verify the checksum of BIP39 seeds; make sure you type your seed correctly.'),
                     ])
-                    #self.parent.show_warning(msg)
-                self.seed_type_label.setVisible(not b)
-                self.is_seed = (lambda x: bool(x)) if b else self.saved_is_seed
-                self.on_edit()
+                else:
+                    msg = ''
+                self.seed_warning.setText(msg)
+
             cb_bip39 = QCheckBox(_('BIP39 seed'))
             cb_bip39.toggled.connect(f)
             cb_bip39.setChecked(self.is_bip39)
@@ -130,9 +129,10 @@ class SeedLayout(QVBoxLayout):
             hbox.addWidget(passphrase_e)
             self.addLayout(hbox)
         self.addStretch(1)
+        self.seed_warning = WWLabel('')
+        self.addWidget(self.seed_warning)
         if msg:
-            msg = seed_warning_msg(seed)
-            self.addWidget(WWLabel(msg))
+            self.seed_warning.setText(seed_warning_msg(seed))
 
     def get_seed(self):
         text = unicode(self.seed_e.text())
@@ -142,8 +142,11 @@ class SeedLayout(QVBoxLayout):
         from electrum.bitcoin import seed_type
         s = self.get_seed()
         b = self.is_seed(s)
-        t = seed_type(s)
-        label = _('Seed Type') + ': ' + t if t else ''
+        if not self.is_bip39:
+            t = seed_type(s)
+            label = _('Seed Type') + ': ' + t if t else ''
+        else:
+            label = 'BIP39 (checksum disabled)'
         self.seed_type_label.setText(label)
         self.parent.next_button.setEnabled(b)