give user the option to remove incomplete wallet

gui/qt/__init__.py

@@ -142,10 +142,29 @@ class ElectrumGui:
         qtVersion = qVersion()
         return int(qtVersion[0]) >= 4 and int(qtVersion[2]) >= 7
 
-
     def set_url(self, uri):
         self.current_window.pay_from_URI(uri)
 
+    def run_wizard(self, storage, action):
+        import installwizard
+        if storage.file_exists and action != 'new':
+            msg = _("The file '%s' contains an incompletely created wallet.")%storage.path + '\n'\
+                  + _("Do you want to complete its creation now?")
+            if not util.question(msg):
+                if util.question(_("Do you want to delete '%s'?")%storage.path):
+                    os.remove(storage.path)
+                    QMessageBox.information(None, _('Warning'), _('The file was removed'), _('OK'))
+                    return
+                return
+        wizard = installwizard.InstallWizard(self.config, self.network, storage)
+        wizard.show()
+        try:
+            wallet = wizard.run(action)
+        except BaseException as e:
+            traceback.print_exc(file=sys.stdout)
+            QMessageBox.information(None, _('Error'), str(e), _('OK'))
+            return
+        return wallet
 
     def main(self, url):
 
@@ -171,15 +190,7 @@ class ElectrumGui:
             action = 'new'
 
         if action is not None:
-            import installwizard
-            wizard = installwizard.InstallWizard(self.config, self.network, storage)
-            wizard.show()
-            try:
-                wallet = wizard.run(action)
-            except BaseException as e:
-                traceback.print_exc(file=sys.stdout)
-                QMessageBox.information(None, _('Error'), str(e), _('OK'))
-                return
+            wallet = self.run_wizard(storage, action)
             if not wallet:
                 return
         else:

gui/qt/main_window.py

@@ -268,22 +268,10 @@ class ElectrumWindow(QMainWindow):
             QMessageBox.warning(None, _('Warning'), str(e), _('OK'))
             return
         action = wallet.get_action()
-        # ask for confirmation
-        if action is not None:
-            if not self.question(_("This file contains an incompletely created wallet.\nDo you want to complete its creation now?")):
-                return
         self.hide()
         # run wizard
         if action is not None:
-            import installwizard
-            wizard = installwizard.InstallWizard(self.config, self.network, storage)
-            wizard.show()
-            try:
-                wallet = wizard.run(action)
-            except BaseException as e:
-                traceback.print_exc(file=sys.stdout)
-                QMessageBox.information(None, _('Error'), str(e), _('OK'))
-                return
+            wallet = self.gui_object.run_wizard(storage, action)
             if not wallet:
                 self.show()
                 return

gui/qt/util.py

@@ -187,7 +187,8 @@ def text_dialog(parent, title, label, ok_label, default=None):
     if dialog.exec_():
         return unicode(txt.toPlainText())
 
-
+def question(msg):
+    return QMessageBox.question(None, _('Message'), msg, QMessageBox.Yes | QMessageBox.No, QMessageBox.No) == QMessageBox.Yes
 
 def address_field(addresses):
     hbox = QHBoxLayout()