Trezor: Add wipe device functionality

Also add a chicken box for PIN removal.

gui/qt/installwizard.py

@@ -55,7 +55,7 @@ class CosignWidget(QWidget):
 
 
 
-class InstallWizard(WindowModalDialog, MessageBoxMixin, WizardBase):
+class InstallWizard(WindowModalDialog, WizardBase):
 
     def __init__(self, config, app, plugins):
         title = 'Electrum  -  ' + _('Install Wizard')

gui/qt/qrcodewidget.py

@@ -8,7 +8,7 @@ import qrcode
 import electrum
 from electrum import bmp
 from electrum.i18n import _
-from util import WindowModalDialog, MessageBoxMixin
+from util import WindowModalDialog
 
 
 class QRCodeWidget(QWidget):
@@ -83,7 +83,7 @@ class QRCodeWidget(QWidget):
 
 
 
-class QRDialog(WindowModalDialog, MessageBoxMixin):
+class QRDialog(WindowModalDialog):
 
     def __init__(self, data, parent=None, title = "", show_text=False):
         WindowModalDialog.__init__(self, parent, title)

gui/qt/util.py

@@ -156,9 +156,10 @@ class CancelButton(QPushButton):
         self.clicked.connect(dialog.reject)
 
 class MessageBoxMixin:
-    def question(self, msg, parent=None, title=None):
+    def question(self, msg, parent=None, title=None, icon=None):
         Yes, No = QMessageBox.Yes, QMessageBox.No
-        return self.msg_box(QMessageBox.Question, parent or self, title or '',
+        return self.msg_box(icon or QMessageBox.Question,
+                            parent or self, title or '',
                             msg, buttons=Yes|No, defaultButton=No) == Yes
 
     def show_warning(self, msg, parent=None, title=None):
@@ -188,7 +189,7 @@ class MessageBoxMixin:
         d.setDefaultButton(defaultButton)
         return d.exec_()
 
-class WindowModalDialog(QDialog):
+class WindowModalDialog(QDialog, MessageBoxMixin):
     '''Handy wrapper; window modal dialogs are better for our multi-window
     daemon model as other wallet windows can still be accessed.'''
     def __init__(self, parent, title=None):