Merge #1211: Add list of words for new generated mnemonic in share xp…

…ubs panel

c638350 Add list of words for new generated mnemonic in share xpubs panel (edouardparis)

Pull request description:

  Because the share xpubs is not anymore a install process, no information is stored. If user want to generate a new mnemonic and share it xpubs he must be aware that he has to backup it.
  ![20240719_15h22m12s_grim](https://github.com/user-attachments/assets/2caacffd-1698-422e-9cd3-c5cf4aee795a)

  close #1203

ACKs for top commit:
  jp1ac4:
    Tested ACK c638350.

Tree-SHA512: 616d208e4923a442dc4b0306a157fe069679b8b78f28cb0ba0b2ad075f811ba527e84d48ff45e706cb0d62c68d56b761f50d4993bc76c3365b9579888b8c26f8

gui/src/installer/step/share_xpubs.rs

@@ -32,14 +32,19 @@ pub struct SignerXpubs {
     signer: Arc<Mutex<Signer>>,
     xpubs: Vec<String>,
     next_account: ChildNumber,
+    words: [&'static str; 12],
+    did_backup: bool,
 }
 
 impl SignerXpubs {
     fn new(signer: Arc<Mutex<Signer>>) -> Self {
+        let words = { signer.lock().unwrap().mnemonic() };
         Self {
+            words,
             signer,
             xpubs: Vec::new(),
             next_account: ChildNumber::from_hardened_idx(0).unwrap(),
+            did_backup: false,
         }
     }
 
@@ -57,15 +62,12 @@ impl SignerXpubs {
     }
 
     pub fn view(&self) -> Element<Message> {
-        view::signer_xpubs(&self.xpubs)
+        view::signer_xpubs(&self.xpubs, &self.words, self.did_backup)
     }
 }
 
 pub struct ShareXpubs {
     network: Network,
-
-    shared: bool,
-
     hw_xpubs: Vec<HardwareWalletXpubs>,
     xpubs_signer: SignerXpubs,
 }
@@ -75,7 +77,6 @@ impl ShareXpubs {
         Self {
             network,
             hw_xpubs: Vec::new(),
-            shared: false,
             xpubs_signer: SignerXpubs::new(signer),
         }
     }
@@ -86,7 +87,6 @@ impl Step for ShareXpubs {
     // Verification of the values is happening when the user click on Next button.
     fn update(&mut self, hws: &mut HardwareWallets, message: Message) -> Command<Message> {
         match message {
-            Message::UserActionDone(shared) => self.shared = shared,
             Message::ImportXpub(fg, res) => {
                 if let Some(hw_xpubs) = self.hw_xpubs.iter_mut().find(|x| x.fingerprint == fg) {
                     hw_xpubs.processing = false;
@@ -105,6 +105,9 @@ impl Step for ShareXpubs {
             Message::UseHotSigner => {
                 self.xpubs_signer.select(self.network);
             }
+            Message::UserActionDone(done) => {
+                self.xpubs_signer.did_backup = done;
+            }
             Message::Select(i) => {
                 if let Some(HardwareWallet::Supported {
                     device,

gui/src/installer/view.rs

@@ -422,18 +422,22 @@ pub fn import_descriptor<'a>(
     )
 }
 
-pub fn signer_xpubs(xpubs: &[String]) -> Element<Message> {
+const BACKUP_WARNING: &str =
+    "Beware to back up the mnemonic as it will NOT be stored on the computer.";
+
+pub fn signer_xpubs<'a>(
+    xpubs: &'a [String],
+    words: &'a [&'static str; 12],
+    did_backup: bool,
+) -> Element<'a, Message> {
     Container::new(
         Column::new()
             .push(
                 Button::new(
                     Row::new().align_items(Alignment::Center).push(
                         Column::new()
-                            .push(text("This computer").bold())
-                            .push(
-                                text("Derive a key from a mnemonic stored on this computer")
-                                    .small(),
-                            )
+                            .push(text("Generate a new mnemonic").bold())
+                            .push(text(BACKUP_WARNING).small().style(color::ORANGE))
                             .spacing(5)
                             .width(Length::Fill),
                     ),
@@ -451,6 +455,39 @@ pub fn signer_xpubs(xpubs: &[String]) -> Element<Message> {
             .push_maybe(if xpubs.is_empty() {
                 None
             } else {
+                Some(
+                    Container::new(words.iter().enumerate().fold(
+                        Column::new().spacing(5),
+                        |acc, (i, w)| {
+                            acc.push(
+                                Row::new()
+                                    .align_items(Alignment::End)
+                                    .push(
+                                        Container::new(text(format!("#{}", i + 1)).small())
+                                            .width(Length::Fixed(50.0)),
+                                    )
+                                    .push(text(*w).bold()),
+                            )
+                        },
+                    ))
+                    .padding(15),
+                )
+            })
+            .push_maybe(if !xpubs.is_empty() {
+                Some(
+                    Container::new(
+                        checkbox(
+                            "I have backed up the mnemonic, show the extended public key",
+                            did_backup,
+                        )
+                        .on_toggle(Message::UserActionDone),
+                    )
+                    .padding(10),
+                )
+            } else {
+                None
+            })
+            .push_maybe(if !xpubs.is_empty() && did_backup {
                 Some(xpubs.iter().fold(Column::new().padding(15), |col, xpub| {
                     col.push(
                         Row::new()
@@ -475,6 +512,8 @@ pub fn signer_xpubs(xpubs: &[String]) -> Element<Message> {
                             ),
                     )
                 }))
+            } else {
+                None
             }),
     )
     .style(theme::Container::Card(theme::Card::Simple))
@@ -571,17 +610,24 @@ pub fn share_xpubs<'a>(
 ) -> Element<'a, Message> {
     layout(
         (0, 0),
-        "Share your public keys",
+        "Share your public keys (Xpubs)",
         Column::new()
             .push(
                 Container::new(
-                    text("Generate an extended public key by selecting a signing device:").bold(),
+                    text("Import an extended public key by selecting a signing device:").bold(),
                 )
                 .width(Length::Fill),
             )
+            .push_maybe(if hws.is_empty() {
+                Some(p1_regular("No signing device connected").style(color::GREY_3))
+            } else {
+                None
+            })
             .spacing(10)
             .push(Column::with_children(hws).spacing(10))
+            .push(Container::new(text("Or create a new random key:").bold()).width(Length::Fill))
             .push(signer)
+            .push(Space::with_height(10))
             .width(Length::Fill),
         true,
         Some(Message::Previous),