SFT-1943: fixed predictive text page holding onto previous entries

ports/stm32/boards/Passport/modules/flows/restore_backup_flow.py

@@ -99,14 +99,17 @@ async def enter_backup_password(self):
         result = await PredictiveTextInputPage(
             word_list='bytewords',
             total_words=NUM_BACKUP_PASSWORD_WORDS,
-            initial_words=self.backup_password_words).show()
+            initial_words=self.backup_password_words,
+            initial_prefixes=self.backup_password_prefixes).show()
+
+        (backup_password_words, self.backup_password_prefixes, _) = result
         if result is None:
             cancel = await QuestionPage(text='Cancel password entry? ' +
                                         'All progress will be lost.').show()
             if cancel:
                 self.back()
         else:
-            self.backup_password_words, self.backup_password_prefixes = result
+            self.backup_password_words = backup_password_words
             self.decryption_password = (' ').join(self.backup_password_words)
             # print('6 words: decryption_password={}'.format(self.decryption_password))
             self.goto(self.do_restore)

ports/stm32/boards/Passport/modules/flows/restore_seed_flow.py

@@ -21,6 +21,7 @@ def __init__(self, refresh_cards_when_done=False, autobackup=True, full_backup=F
         self.validate_text = None
         self.index = 0
         self.seed_words = []
+        self.prefixes = []
         self.full_backup = full_backup
         self.autobackup = autobackup
         self.statusbar = {'title': 'IMPORT SEED', 'icon': 'ICON_SEED'}
@@ -103,9 +104,12 @@ async def enter_seed_words(self):
             word_list='bip39',
             total_words=self.seed_length,
             initial_words=self.seed_words,
+            initial_prefixes=self.prefixes,
             start_index=self.index).show()
 
-        if result is None:
+        seed_words, self.prefixes, get_last_word = result
+
+        if seed_words is None:
             cancel = await QuestionPage(
                 text='Cancel seed entry? All progress will be lost.').show()
 
@@ -116,8 +120,7 @@ async def enter_seed_words(self):
             self.index = 0
             return
 
-        self.seed_words, self.prefixes, get_last_word = result
-
+        self.seed_words = seed_words
         if get_last_word:
 
             last_word = await RandomFinalWordFlow(self.seed_words).run()

ports/stm32/boards/Passport/modules/pages/predictive_text_input_page.py

@@ -29,8 +29,8 @@ def __init__(self,
                  total_words=24,
                  card_header=None,
                  statusbar=None,
-                 initial_words=[],
-                 initial_prefixes=[],
+                 initial_words=None,
+                 initial_prefixes=None,
                  left_micron=microns.Back,
                  right_micron=microns.Forward,
                  start_index=None):
@@ -45,8 +45,8 @@ def __init__(self,
         self.total_words = total_words
         self.word_idx = start_index if (start_index is not None and start_index < self.total_words) else 0
         self.prediction_idx = 0
-        self.selected_words = initial_words
-        self.prefixes = initial_prefixes
+        self.selected_words = initial_words or []
+        self.prefixes = initial_prefixes or []
         self.predictions = []
 
         with Stylize(self) as default:
@@ -97,7 +97,6 @@ def update_predictions(self):
             # print('Lookup words for {}'.format(prefix))
             set_list(self.prefixes, self.word_idx, prefix)
             self.predictions = get_words_matching_prefix(prefix, max=10, word_list=self.word_list)
-            print("len(predictions): {}".format(len(self.predictions)))
         elif self.word_idx == self.total_words - 1:
             self.predictions = [RANDOM_WORD_STRING]
         else:
@@ -208,7 +207,7 @@ def left_action(self, is_pressed):
                 self.update_title()
                 self.update_predictions()
             else:
-                self.set_result(None)
+                self.set_result((None, self.prefixes, False))
 
     def attach(self, group):
         super().attach(group)