gui: display if signer signed in modal

close #349

gui/src/app/state/spend/detail.rs

@@ -1,3 +1,4 @@
+use std::collections::HashSet;
 use std::sync::Arc;
 
 use iced::Command;
@@ -90,7 +91,7 @@ impl SpendTxState {
                     self.action = Some(Box::new(DeleteAction::default()));
                 }
                 view::SpendTxMessage::Sign => {
-                    let action = SignAction::new(self.wallet.clone());
+                    let action = SignAction::new(self.tx.signers(), self.wallet.clone());
                     let cmd = action.load(daemon);
                     self.action = Some(Box::new(action));
                     return cmd;
@@ -270,18 +271,18 @@ pub struct SignAction {
     processing: bool,
     hws: Vec<HardwareWallet>,
     error: Option<Error>,
-    signed: Vec<Fingerprint>,
+    signed: HashSet<Fingerprint>,
 }
 
 impl SignAction {
-    pub fn new(wallet: Arc<Wallet>) -> Self {
+    pub fn new(signed: HashSet<Fingerprint>, wallet: Arc<Wallet>) -> Self {
         Self {
             wallet,
             chosen_hw: None,
             processing: false,
             hws: Vec::new(),
             error: None,
-            signed: Vec::new(),
+            signed,
         }
     }
 }
@@ -332,7 +333,7 @@ impl Action for SignAction {
                 Err(e) => self.error = Some(e),
                 Ok((psbt, fingerprint)) => {
                     self.error = None;
-                    self.signed.push(fingerprint);
+                    self.signed.insert(fingerprint);
                     let daemon = daemon.clone();
                     tx.psbt = psbt.clone();
                     return Command::perform(

gui/src/app/view/spend/detail.rs

@@ -1,4 +1,4 @@
-use std::collections::HashMap;
+use std::collections::{HashMap, HashSet};
 
 use iced::{
     widget::{scrollable, tooltip, Space},
@@ -713,7 +713,7 @@ pub fn sign_action<'a>(
     signer_alias: Option<&'a String>,
     processing: bool,
     chosen_hw: Option<usize>,
-    signed: &[Fingerprint],
+    signed: &HashSet<Fingerprint>,
 ) -> Element<'a, Message> {
     Column::new()
         .push_maybe(warning.map(|w| warn(Some(w))))

gui/src/daemon/model.rs

@@ -1,10 +1,15 @@
+use std::collections::HashSet;
+
 pub use liana::{
     commands::{
         CreateSpendResult, GetAddressResult, GetInfoResult, ListCoinsEntry, ListCoinsResult,
         ListSpendEntry, ListSpendResult, ListTransactionsResult, TransactionInfo,
     },
     descriptors::{PartialSpendInfo, PathSpendInfo},
-    miniscript::bitcoin::{util::psbt::Psbt, Amount, Transaction},
+    miniscript::bitcoin::{
+        util::{bip32::Fingerprint, psbt::Psbt},
+        Amount, Transaction,
+    },
 };
 
 pub type Coin = ListCoinsEntry;
@@ -101,6 +106,21 @@ impl SpendTx {
             .values()
             .find(|&path| path.sigs_count >= path.threshold)
     }
+
+    pub fn signers(&self) -> HashSet<Fingerprint> {
+        let mut signers = HashSet::new();
+        for (fg, _) in self.sigs.primary_path().signed_pubkeys.keys() {
+            signers.insert(*fg);
+        }
+
+        for path in self.sigs.recovery_paths().values() {
+            for (fg, _) in path.signed_pubkeys.keys() {
+                signers.insert(*fg);
+            }
+        }
+
+        signers
+    }
 }
 
 #[derive(Debug, Clone)]