feat(core/ui): info screens before ShareWords

Inform the user about possible repeated words in 1-of-1 SLIP39.

Instruct the user to "repeat for all shares".

[no changelog]

core/embed/rust/librust_qstr.h

@@ -502,6 +502,7 @@ static void _librust_qstrs(void) {
   MP_QSTR_reset__only_one_share_will_be_created;
   MP_QSTR_reset__recovery_share_title_template;
   MP_QSTR_reset__recovery_wallet_backup_title;
+  MP_QSTR_reset__repeat_for_all_shares;
   MP_QSTR_reset__required_number_of_groups;
   MP_QSTR_reset__select_correct_word;
   MP_QSTR_reset__select_threshold;
@@ -541,6 +542,7 @@ static void _librust_qstrs(void) {
   MP_QSTR_reset__tos_link;
   MP_QSTR_reset__total_number_of_shares_in_group_template;
   MP_QSTR_reset__use_your_backup;
+  MP_QSTR_reset__words_may_repeat;
   MP_QSTR_reset__words_written_down_template;
   MP_QSTR_reset__write_down_words_template;
   MP_QSTR_reset__wrong_word_selected;

core/embed/rust/src/translations/generated/translated_string.rs

@@ -1334,6 +1334,8 @@ pub enum TranslatedString {
     recovery__unlock_repeated_backup = 934,  // "Create additional backup?"
     recovery__unlock_repeated_backup_verb = 935,  // "Unlock backup"
     homescreen__set_default = 936,  // "Do you really want to set default homescreen image?"
+    reset__words_may_repeat = 937,  // "Words may repeat."
+    reset__repeat_for_all_shares = 938,  // "Repeat for all shares."
 }
 
 impl TranslatedString {
@@ -2663,6 +2665,8 @@ impl TranslatedString {
             Self::recovery__unlock_repeated_backup => "Create additional backup?",
             Self::recovery__unlock_repeated_backup_verb => "Unlock backup",
             Self::homescreen__set_default => "Do you really want to set default homescreen image?",
+            Self::reset__words_may_repeat => "Words may repeat.",
+            Self::reset__repeat_for_all_shares => "Repeat for all shares.",
         }
     }
 
@@ -3993,6 +3997,8 @@ impl TranslatedString {
             Qstr::MP_QSTR_recovery__unlock_repeated_backup => Some(Self::recovery__unlock_repeated_backup),
             Qstr::MP_QSTR_recovery__unlock_repeated_backup_verb => Some(Self::recovery__unlock_repeated_backup_verb),
             Qstr::MP_QSTR_homescreen__set_default => Some(Self::homescreen__set_default),
+            Qstr::MP_QSTR_reset__words_may_repeat => Some(Self::reset__words_may_repeat),
+            Qstr::MP_QSTR_reset__repeat_for_all_shares => Some(Self::reset__repeat_for_all_shares),
             _ => None,
         }
     }

core/embed/rust/src/ui/model_mercury/flow/show_share_words.rs

@@ -1,13 +1,13 @@
 use crate::{
     error,
-    micropython::{map::Map, obj::Obj, qstr::Qstr, util},
+    micropython::{iter::IterBuf, map::Map, obj::Obj, qstr::Qstr, util},
     strutil::TString,
     translations::TR,
     ui::{
         button_request::ButtonRequestCode,
         component::{
             swipe_detect::SwipeSettings,
-            text::paragraphs::{Paragraph, Paragraphs},
+            text::paragraphs::{Paragraph, ParagraphSource, ParagraphVecShort, Paragraphs, VecExt},
             ButtonRequestExt, ComponentExt, SwipeDirection,
         },
         flow::{base::Decision, flow_store, FlowMsg, FlowState, FlowStore, SwipeFlow},
@@ -24,7 +24,6 @@ use super::super::{
 
 #[derive(Copy, Clone, PartialEq, Eq, ToPrimitive)]
 pub enum ShowShareWords {
-    // TODO: potentially also add there the 'never put anywhere digital' warning?
     Instruction,
     Words,
     Confirm,
@@ -80,16 +79,23 @@ impl ShowShareWords {
         let subtitle: TString = kwargs.get(Qstr::MP_QSTR_subtitle)?.try_into()?;
         let share_words_obj: Obj = kwargs.get(Qstr::MP_QSTR_words)?;
         let share_words_vec: Vec<TString, 33> = util::iter_into_vec(share_words_obj)?;
-        let text_info: TString = kwargs.get(Qstr::MP_QSTR_text_info)?.try_into()?;
+        let text_info: Obj = kwargs.get(Qstr::MP_QSTR_text_info)?;
         let text_confirm: TString = kwargs.get(Qstr::MP_QSTR_text_confirm)?.try_into()?;
         let nwords = share_words_vec.len();
 
+        let mut instructions_paragraphs = ParagraphVecShort::new();
+        for item in IterBuf::new().try_iterate(text_info)? {
+            let text: TString = item.try_into()?;
+            instructions_paragraphs.add(Paragraph::new(&theme::TEXT_MAIN_GREY_LIGHT, text));
+        }
+        let paragraphs_spacing = 8;
         let content_instruction = Frame::left_aligned(
             title,
-            SwipeContent::new(Paragraphs::new(Paragraph::new(
-                &theme::TEXT_MAIN_GREY_LIGHT,
-                text_info,
-            ))),
+            SwipeContent::new(
+                instructions_paragraphs
+                    .into_paragraphs()
+                    .with_spacing(paragraphs_spacing),
+            ),
         )
         .with_subtitle(TR::words__instructions.into())
         .with_footer(TR::instructions__swipe_up.into(), None)

core/embed/rust/src/ui/model_mercury/layout.rs

@@ -1688,7 +1688,7 @@ pub static mp_module_trezorui2: Module = obj_module! {
     ///     title: str,
     ///     subtitle: str,
     ///     words: Iterable[str],
-    ///     text_info: str,
+    ///     text_info: Iterable[str],
     ///     text_confirm: str,
     /// ) -> LayoutObj[UiResult]:
     ///     """Show wallet backup words preceded by an instruction screen and followed by

core/mocks/generated/trezorui2.pyi

@@ -402,7 +402,7 @@ def flow_show_share_words(
     title: str,
     subtitle: str,
     words: Iterable[str],
-    text_info: str,
+    text_info: Iterable[str],
     text_confirm: str,
 ) -> LayoutObj[UiResult]:
     """Show wallet backup words preceded by an instruction screen and followed by

core/mocks/trezortranslate_keys.pyi

@@ -638,6 +638,7 @@ class TR:
     reset__only_one_share_will_be_created: str = "Only one share will be created."
     reset__recovery_share_title_template: str = "Recovery share #{0}"
     reset__recovery_wallet_backup_title: str = "Wallet backup"
+    reset__repeat_for_all_shares: str = "Repeat for all shares."
     reset__required_number_of_groups: str = "The required number of groups for recovery."
     reset__select_correct_word: str = "Select the correct word for each position."
     reset__select_threshold: str = "Select the minimum shares required to recover your wallet."
@@ -676,6 +677,7 @@ class TR:
     reset__tos_link: str = "trezor.io/tos"
     reset__total_number_of_shares_in_group_template: str = "Set the total number of shares in Group {0}."
     reset__use_your_backup: str = "Use your backup when you need to recover your wallet."
+    reset__words_may_repeat: str = "Words may repeat."
     reset__words_written_down_template: str = "I wrote down all {0} words in order."
     reset__write_down_words_template: str = "Write the following {0} words in order on your wallet backup card."
     reset__wrong_word_selected: str = "Wrong word selected!"

core/src/trezor/ui/layouts/mercury/reset.py

@@ -32,7 +32,13 @@ async def show_share_words(
             group_index + 1, share_index + 1
         )
     words_count = len(share_words)
-    text_info = TR.reset__write_down_words_template.format(words_count)
+    text_info = [TR.reset__write_down_words_template.format(words_count)]
+    if words_count == 20 and share_index is None:
+        # 1-of-1 SLIP39: inform the user about repeated words
+        text_info.append(TR.reset__words_may_repeat)
+    if share_index == 0:
+        # regular SLIP39, 1st share
+        text_info.append(TR.reset__repeat_for_all_shares)
     text_confirm = TR.reset__words_written_down_template.format(words_count)
 
     result = await RustLayout(

core/translations/en.json

@@ -642,6 +642,7 @@
     "reset__only_one_share_will_be_created": "Only one share will be created.",
     "reset__recovery_share_title_template": "Recovery share #{0}",
     "reset__recovery_wallet_backup_title": "Wallet backup",
+    "reset__repeat_for_all_shares": "Repeat for all shares.",
     "reset__required_number_of_groups": "The required number of groups for recovery.",
     "reset__select_correct_word": "Select the correct word for each position.",
     "reset__select_threshold": "Select the minimum shares required to recover your wallet.",
@@ -680,6 +681,7 @@
     "reset__tos_link": "trezor.io/tos",
     "reset__total_number_of_shares_in_group_template": "Set the total number of shares in Group {0}.",
     "reset__use_your_backup": "Use your backup when you need to recover your wallet.",
+    "reset__words_may_repeat": "Words may repeat.",
     "reset__words_written_down_template": "I wrote down all {0} words in order.",
     "reset__write_down_words_template": "Write the following {0} words in order on your wallet backup card.",
     "reset__wrong_word_selected": "Wrong word selected!",
@@ -942,4 +944,4 @@
     "words__writable": "Writable",
     "words__yes": "Yes"
   }
-}
+}

core/translations/order.json

@@ -935,5 +935,7 @@
   "933": "recovery__title_unlock_repeated_backup",
   "934": "recovery__unlock_repeated_backup",
   "935": "recovery__unlock_repeated_backup_verb",
-  "936": "homescreen__set_default"
+  "936": "homescreen__set_default",
+  "937": "reset__words_may_repeat",
+  "938": "reset__repeat_for_all_shares"
 }

core/translations/signatures.json

@@ -1,8 +1,8 @@
 {
   "current": {
-    "merkle_root": "7a115e582a5f5f09b1850946030762360f55e516a60cf960dffc9ba174c2e4d2",
-    "datetime": "2024-06-02T11:07:12.183601",
-    "commit": "66496206ccbe9583203fbfebf8c9222e8c6379b8"
+    "merkle_root": "405ce2be8dcb492a1d4b25ec8aaeaa9914ff88594151beaceea52315172b11d0",
+    "datetime": "2024-06-03T12:40:07.498873",
+    "commit": "2ac4967ef190dac1fe238cc00878ff2d08e17bb5"
   },
   "history": [
     {

tests/input_flows.py

@@ -1554,7 +1554,9 @@ class InputFlowSlip39BasicResetRecovery(InputFlowBase):
         # 6. threshold info
         # 7. Set & confirm threshold value
         # 8. Confirm show seeds
-        yield from click_through(self.debug, screens=9, code=B.ResetDevice)
+        # 9. Warning
+        # 10. Instructions
+        yield from click_through(self.debug, screens=10, code=B.ResetDevice)
 
         # Mnemonic phrases
         self.mnemonics = yield from load_N_shares(self.debug, 5)