Merge pull request #1492 from ctrlcctrlv/uncopyable-seed

Make seed uncopyable

gui/qt/installwizard.py

@@ -416,7 +416,7 @@ class InstallWizard(QDialog):
         return True
 
     def show_seed(self, seed, sid):
-        vbox = seed_dialog.show_seed_box_msg(seed, sid)
+        vbox = seed_dialog.show_seed_box_msg(seed, sid, paranoid=True)
         vbox.addLayout(Buttons(CancelButton(self), OkButton(self, _("Next"))))
         self.set_layout(vbox)
         return self.exec_()

gui/qt/qrtextedit.py

@@ -8,10 +8,26 @@ from util import ButtonsTextEdit
 
 class ShowQRTextEdit(ButtonsTextEdit):
 
-    def __init__(self, text=None):
+    def __init__(self, text=None, paranoid=False):
         ButtonsTextEdit.__init__(self, text)
         self.setReadOnly(1)
         self.addButton(":icons/qrcode.png", self.qr_show, _("Show as QR code"))
+        self.paranoid = paranoid
+
+        if paranoid:
+            # Paranoid flag forces the user to write down what's in the box, 
+            # like Mycelium does. This is useful since many users just copy
+            # and paste their code, then when disaster strikes they don't have
+            # it written down anywhere.
+            self.setAcceptDrops(False) # No dragging and dropping
+            # Use custom context menu to remove copy/paste from menu
+            self.setContextMenuPolicy(Qt.ActionsContextMenu)
+            self.qaction = QAction(_("Show as QR code"), self)
+            self.qaction.triggered.connect(self.qr_show)
+            self.addAction(self.qaction)
+            # No text selection allowed.
+            self.setTextInteractionFlags(Qt.NoTextInteraction)
+
         run_hook('show_text_edit', self)
 
     def qr_show(self):
@@ -23,6 +39,7 @@ class ShowQRTextEdit(ButtonsTextEdit):
         QRDialog(s).exec_()
 
     def contextMenuEvent(self, e):
+        if self.paranoid: return
         m = self.createStandardContextMenu()
         m.addAction(_("Show as QR code"), self.qr_show)
         m.exec_(e.globalPos())

gui/qt/seed_dialog.py

@@ -47,9 +47,9 @@ def icon_filename(sid):
         return ":icons/seed.png"
 
 
-def show_seed_box_msg(seedphrase, sid=None):
+def show_seed_box_msg(seedphrase, sid=None, paranoid=False):
     msg =  _("Your wallet generation seed is") + ":"
-    vbox = show_seed_box(msg, seedphrase, sid)
+    vbox = show_seed_box(msg, seedphrase, sid, paranoid=paranoid)
     save_msg = _("Please save these %d words on paper (order is important).")%len(seedphrase.split()) + " "
     msg2 = save_msg + " " \
            + _("This seed will allow you to recover your wallet in case of computer failure.") + "<br/>" \
@@ -60,11 +60,11 @@ def show_seed_box_msg(seedphrase, sid=None):
     vbox.addStretch(1)
     return vbox
 
-def show_seed_box(msg, seed, sid):
+def show_seed_box(msg, seed, sid, paranoid=False):
-    vbox, seed_e = enter_seed_box(msg, None, sid=sid, text=seed)
+    vbox, seed_e = enter_seed_box(msg, None, sid=sid, text=seed, paranoid=paranoid)
     return vbox
 
-def enter_seed_box(msg, window, sid=None, text=None):
+def enter_seed_box(msg, window, sid=None, text=None, paranoid=False):
     vbox = QVBoxLayout()
     logo = QLabel()
     logo.setPixmap(QPixmap(icon_filename(sid)).scaledToWidth(56))
@@ -75,7 +75,7 @@ def enter_seed_box(msg, window, sid=None, text=None):
         seed_e = ScanQRTextEdit()
         seed_e.setTabChangesFocus(True)
     else:
-        seed_e = ShowQRTextEdit(text=text)
+        seed_e = ShowQRTextEdit(text=text, paranoid=paranoid)
     seed_e.setMaximumHeight(130)
     vbox.addWidget(label)
     grid = QGridLayout()